洛河槐溝水電站工程項目可行性研究報告

Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 目 錄 第一章 綜合說明 . 1 第二章 水文、泥沙 . 17 第三章 工程地質(zhì) . 26 第四章 工程任務(wù)和規(guī)模 . 37 第五章 工程選址、工程總布置及主要建筑物 . 47 第六章 水力機(jī)械電工及金屬結(jié)構(gòu) . 54 第七章 消防、采暖、通風(fēng) . 70 第八章 施工組織設(shè)計 . 71 第九章 水庫淹沒處理、工程永久占地及環(huán)境影響評價 . 77 第十章 工 程投資估算及資金籌措 . 79 第十一章 經(jīng)濟(jì)評價 . 81 附件： 1、財政部、國家稅務(wù)總局文件財稅字 94004號關(guān)于調(diào)整農(nóng)業(yè)產(chǎn)品增值稅稅率和若干項目征免增值稅的通知 2、陜西省物價局陜價管調(diào)發(fā) 20031號關(guān)于調(diào)整陜西電網(wǎng)電力Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 價格的通知 3、陜西省電力工業(yè)局農(nóng)電局文件陜電農(nóng)地字 199801 號關(guān)于五峰等三座水電站接 入電力系統(tǒng)的批復(fù) 4、渭南市計劃委員會渭計發(fā) 1998311號關(guān)于對白水縣洛河槐溝水電站工程立項 5、白水縣人民政府白政發(fā) 199812 號關(guān)于開發(fā)小水電的優(yōu)惠政策的決定 第一章 綜合說明 1.1 前言 槐溝河水電站工程位于陜西省白水縣北部的門公鄉(xiāng)槐溝河村，是白水縣洛河規(guī)劃中的一座梯級電站。上游銜接規(guī)劃的張家船水電站，其尾水和已建的王莽寨水電站銜接。壩址以上控制流域面積 21246km2，占全流域面積的 79%，是繼王莽寨水電站之后洛河梯級開發(fā)中裝機(jī)容量大、條件優(yōu)越，便于近期實施的水電站之一。 1.2 氣象、水文特征 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 1.2.1 流域概況 洛河為渭河左岸的一級支流，發(fā)源于陜西省定邊縣白于山南麓，流經(jīng)我省的吳旗、志丹、甘泉、富縣、洛川、黃陵、白水、蒲城、澄城，于大荔縣東南注入渭河；干流全長 680km，流域面積 26905km2，河道平均比降 1.5 ，流域呈羽毛形。 壩址位于白水縣槐溝河村東北約 1km 的河道轉(zhuǎn)彎處，廠房位于鐵橋下游約 300m，距五峰水電站 17.3km。壩址以上控制流域面積 21246km2，占全流域面積的 79%，占注 氵狀 頭水文站控制流域面積 25154km2的 84.5%。洛河干流分別在王家村 、三眼橋附近進(jìn)出白水縣境，縣境內(nèi)河道落差175m，河長 59.5km，比降 2.9 。流域地貌系由陜北黃土高原和渭北黃土臺塬組成，流域植被較差，水土流失嚴(yán)重。 1.2.2 氣象特征 流域多年平均降水量在 400 650mm范圍，由北向南遞增，降水量年際變化大，年內(nèi)分布不均， 7 9月降水量約占年降水量的 50%左右。多年平均水面蒸發(fā)量為 1000 1100mm。 多年平均氣溫在 11.4，由北向南遞增，絕對最高氣溫 39.4，絕對最低氣溫 -16.7。冬季盛西北風(fēng)，夏季多東南風(fēng)，年平均風(fēng)速 3.4m/s，Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 實測最大風(fēng)速為 25m/s，據(jù)白水縣氣象站統(tǒng)計，初霜 10月下旬，終霜 3月下旬，無霜期 211天。土壤冰凍以 12 2月最為嚴(yán)重，最大凍土層厚度為 0.69m。河流封凍時間 11月下旬 2月上旬，解凍時間為 2月中旬到 3月上旬。 1.2.3 水文特征 槐溝河水電站壩址處無水文測站，而在其上下游分別有 1952年建站的交口水文站和 1933年建的 氵狀 頭水文站。由于洛河徑流主要來源于交口以下的中游地區(qū)，且槐溝河又與狀頭同屬于一個水文氣候區(qū)，其降水、徑流、暴雨洪水等特性相一致，所以采用狀頭水文站作為槐溝河水文計算 的參證站。 氵狀 頭水文站在 1933 1998年 66年實測資料中，最大年徑流量為 20.15億 m3（ 1964年），最小年徑流量為 4.383億 m3（ 1936年），最大與最小值之比為 4.6，多年平均徑流量為 8.77億 m3。按面積法換算到槐溝河水電站斷面，多年平均徑流量為 7.26億 m3，相應(yīng)平均流量為 23.5 m3/s。 槐溝河水電站為 4級建筑物，其洪水標(biāo)準(zhǔn)及洪峰流量為： 大壩：設(shè)計洪水 30年一遇，相應(yīng)洪峰流量 Q=5400m3/s 校核洪水 200年一遇，相應(yīng)洪峰流量 Q=10600m3/s Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 廠房：設(shè)計洪水 20年一遇，相應(yīng)洪峰流量 Q=4380m3/s 校核洪水 100年一遇，相應(yīng)洪峰流量 Q=8610m3/s 1.2.4 泥沙 洛河為多沙河流，水沙關(guān)系基本是水大沙大。據(jù) 氵狀 頭站實測泥沙資料統(tǒng)計，最大年輸沙量為 22000 萬 t（ 1966 年），最小年輸沙量為 1400萬 t（ 1939年），多年平均懸移質(zhì)輸沙量為 8524萬 t，汛期為 7848萬 t，占年輸沙量 92%，最大含沙量可達(dá) 1340kg/m3（ 1945年 9月 26日），平均含沙量 97.1kg/m3。 1.3 工 程地質(zhì) 槐溝河水電站為小型電站，地處于鄂爾多斯臺向斜南緣邊部，南與渭河地塹北部相鄰，為一緩傾單斜構(gòu)造區(qū)，無深大斷裂通過，第四紀(jì)以來屬緩慢上升區(qū)，歷史上未發(fā)現(xiàn)大于 4級地震，根據(jù)中國地震烈度區(qū)劃圖，地震基本烈度為度區(qū)。 槐溝河水庫庫容小，回水高程低庫區(qū)無村莊及重要礦產(chǎn)。僅有零星耕地?；緹o淹沒、浸沒問題。水庫兩岸無大的滑坡崩塌體及泥石流沖溝，岸邊再造及固體徑流來源亦無較大影響。 為充分利用設(shè)計水頭及隧洞引水線路的盡量減短，壩址在河灣轉(zhuǎn)彎Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 地段。壩址處河床基巖堅硬裸露，巖石弱風(fēng)化較淺，開挖深度不大。左岸壩肩較 陡，巖石堅硬，左岸有河谷階地為基座階地，上覆黃土及砂礫石應(yīng)挖除。壩基壩肩無斷層，不會產(chǎn)生大的壩基及壩肩的滲漏問題?；娱_挖中應(yīng)挖除弱風(fēng)化帶。 本工程引水隧洞通過地段為紫紅色長石石細(xì)砂巖，該巖層之上為泥質(zhì)粉砂巖及泥巖，局部可見砂巖中夾泥砂礫巖透鏡體。隧洞穿過地段為基本穩(wěn)定巖體，雖洞線與巖層夾角僅 40 20，但屬單斜構(gòu)造，斷裂不甚發(fā)育，雖有基巖裂隙水，但水量不豐，工程地質(zhì)條件沿屬簡單。隧洞進(jìn)出口洞臉邊坡開挖較陡，應(yīng)注意施工安全，如需錨固時應(yīng)及時錨固處理。 壓力前池地段基巖較堅硬，考慮到與引水鋼管邊坡相接，應(yīng) 及時進(jìn)行防滲及襯砌砼處理，以免漏水。 廠房地基地質(zhì)條件較簡單，因結(jié)構(gòu)需要，開挖深度較大，應(yīng)注意施工邊坡的穩(wěn)定性，并預(yù)先準(zhǔn)備數(shù)量足夠的排水措施。尾水渠地段基巖以上有第四系松散堆積層，開挖后應(yīng)及時砼襯砌。 1.4 工程任務(wù)和規(guī)模 槐溝河水電站工程位于白水縣境內(nèi)洛河干流上，該段河流（王家河Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 狄家河）長 40.9km，可開發(fā)量為 16.5MW，規(guī)劃為五級開發(fā)：五峰、張家船、槐溝河、王莽寨、狄家河等。已開發(fā)了王莽寨水電站，裝機(jī)容量 2 1.6MW，在建的五峰和待開發(fā)的狄家河、槐溝河等電站是開發(fā)條件均較優(yōu)越的電源點(diǎn)。 本工程 為無調(diào)節(jié)的徑流式低壩引水式電站。 工程建成后，接入本地電網(wǎng)，可以為電網(wǎng)吸收年電量 3400萬 kwh。 電站設(shè)計引用流量為 27m3/s，相應(yīng)下游水位 544.6m。正常尾水位543.8m。 本電站設(shè)計裝機(jī)容量為 6600kw，年發(fā)電量為 3400 萬 kwh 利用小時數(shù)大于 5000h。 1.5 工程選址、工程總布置及主要建筑物 1.5.1 工程布置選擇 本工程是繼五峰水電站下游規(guī)劃的張家船水電站之后的又一個梯級電站。為獲得最大的發(fā)電水頭，首部樞紐采用溢流壩頂加 4m橡膠壩的方案。設(shè)計原則是：正常情況時，滿足梯級電站的運(yùn)行要求 ；校核情況時，橡膠放水塌落后泄洪，庫區(qū)回水不影響庫區(qū)內(nèi)西延鐵路的安全。 在現(xiàn)場踏勘時曾初步選定了兩個壩址、一個廠址： Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 上壩址：位于西延鐵路槐溝河隧洞下游 200m處； 下壩址：位于槐溝河村上游 1km處洛河河道轉(zhuǎn)彎出口處；距上壩址約 5.1km； 廠址：位于西延鐵路與馬家船隧洞下游約 200m處，在下游王莽寨水電站庫尾以上。 據(jù)此擬定了兩個方案作出比較： （ 1）上壩址方案：在上壩址處建壩，引水發(fā)電系統(tǒng)主要包括上無壓隧洞（長約 990m）；跨河渡槽（長約 115m），下無壓隧洞（長約 1140m）。 （ 2）下壩址方 案：在下壩址處建壩，引水發(fā)電系統(tǒng)主要包括無壓隧洞（長約 856.1m），引水明渠 109m。 兩方案比較，由于壩上移，按洛河河道平均比降 1.5 計算，河床升高 H=5100 1.5 =7.65m；攔河壩工程量減?。煌瑫r，由于庫區(qū)淤積回水的影響隨距離的減少而減小，經(jīng)估算，上壩址處溢流壩頂高程可比下壩址處溢流壩頂高程提高約 1m。但是，上壩址方案的引水系統(tǒng)遠(yuǎn)較下壩址方案復(fù)雜，引水線路長，水頭損失加大；輸水建筑物多，造價大幅度增高；同時所需的地形地質(zhì)勘探工作量也大幅度增加。下壩址方案引水系統(tǒng)簡單，線路短，總體工程量較上 壩址方案減小很多。經(jīng)技術(shù)經(jīng)Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 濟(jì)綜合比較，本階段選定下壩址方案為推薦方案。 1.5.2 推薦方案的各主要建筑物布置 本電站為低壩引水式無調(diào)節(jié)電站，根據(jù)防洪標(biāo)準(zhǔn) GB50201 94，本工程為小型四等，主要建筑物級別為四級，次要建筑物和臨時建筑物級別為五級。 擋水壩設(shè)計洪水標(biāo)準(zhǔn) 30年一遇，相應(yīng)洪峰流量 5400m3/s；校核洪水標(biāo)準(zhǔn) 200年一遇，相應(yīng)洪峰流量 10600m3/s。 廠房設(shè)計洪水標(biāo)準(zhǔn) 20年一遇，相應(yīng)洪水流量 4380m3/s；校核洪水標(biāo)準(zhǔn) 100年一遇，相應(yīng)洪水流量 8610m3/s。 （ 2）攔河壩由河床溢 流壩段和右岸副壩組成，河床溢流壩段為漿砌石實用堰，溢流壩頂高程 570m。最大壩高 15.5m，壩頂長 145m；溢流壩頂部布置 3孔泄洪閘和橡膠壩，頂高程 574m。采用面流消能，壩下游采用干砌石防護(hù)，寬度為 145m，長度為 25m。右岸副壩為漿砌石重力墻后回填土的組合壩，設(shè)計為非溢流壩，壩頂高程 582.5m，壩長 90m。 （ 3）沖砂槽與引水渠道在進(jìn)口部分結(jié)合布置在左岸，排沙閘位于引水口下游側(cè)，閘門孔口尺寸為 4m 4m（寬高）。 （ 4）發(fā)電引水系統(tǒng)布置于左岸，由無壓隧洞、明渠、壓力前池和壓Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 力管道幾個部分組成。引水口 底板高程 570.5m，設(shè)置攔污柵和工作閘門各一道，孔口尺寸為 4m4m（寬高）。無壓引水隧洞為城門洞形，凈斷面尺寸 4m5m，比降 1/2000，長 856.1m，設(shè)計引用流量 29.1m3/s。引水明渠長 109m，斷面為矩形，尺寸 4m5.5m，比降 1/1500。壓力前池長40m，寬 20m，深 13m，池內(nèi)正常水位 573.59m；在池左側(cè)邊墻處設(shè)置有寬 10m的溢流側(cè)堰，堰頂高程為 573.6m；池底部設(shè)置有兩根 DN800mm的沖砂（放空）管。壓力管道布置為單機(jī)單管供水，采用承壓墻內(nèi)現(xiàn)澆鋼筋砼管形式，管徑 1.8m， 管內(nèi)流速 3.81m/s，單管長 32.1m。 （ 5）電站廠房布置在左岸，為岸邊地面明廠房。副廠房位于壓力管道進(jìn)口承壓墻后背坡，布置在主廠房上游側(cè)，安裝間布置在主廠房右端。主廠房長 31.82m，寬 10.2m，其中安裝間長 8.84m，高 9.6m，主機(jī)間長22.98m，高 14.2m。主機(jī)房內(nèi)安裝 3臺 HLA551C LJ 120型水輪發(fā)電機(jī)組，單機(jī)容量為 2200kw。安裝高程 545m，單機(jī)引用流量 9.06m3/s。副廠房設(shè)計總長 31.82m，安裝間高程 553.65m，發(fā)電機(jī)層高程 549.45m，分兩層布置，頂層地坪與 安裝間相同，寬 6.9m，高 5.6m，底層地坪與機(jī)房相同，寬 4.2m，高 4.2m。 1.6 機(jī)電及金屬結(jié)構(gòu) Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 1.6.1 主要機(jī)電設(shè)備的選型和布置 根據(jù)電站的裝機(jī)容量，水頭范圍以及電站在系統(tǒng)中的地位和運(yùn)行方式，選定了 3臺混流式水輪發(fā)電機(jī)組： 水輪機(jī)： HLA551C LJ 120 3臺 Q設(shè) =29.1m3/s Hmax=28.99m Hmin=27.77m Hp=28.38m 發(fā)電機(jī)： SF2200 16/2600 3臺 調(diào)速器： YDT 1800 3臺 電動雙鉤橋式起重機(jī)： 16/3.2t 1臺 1.6.2 接入系統(tǒng)方式及主接線方案 根據(jù)白水縣電網(wǎng)的現(xiàn)狀及規(guī)劃情況，并應(yīng)業(yè)主的要求，電站擬 35KV一回出線接入系統(tǒng)，變壓器容量為 SF10 10000/35。 通過技術(shù)經(jīng)濟(jì)比較確定本電站采用：發(fā)電機(jī)機(jī)端接成單母線接線，設(shè)兩臺三相雙線圖變壓器分別開質(zhì)為 35KV和 10KV兩級電壓， 35KV出線回， 10KV出線一回的主接線方式。 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 1.6.3 金屬結(jié)構(gòu)選型和布置 溢流壩段堰頂設(shè) 15 6.3m泄洪閘 3孔。 左岸沖沙閘處設(shè)置 1孔 4m 4m沖沙孔，采用平板閘 門。 引水隧洞進(jìn)水口設(shè)置攔污柵 1道，在攔污柵下游側(cè)設(shè)置平板工作閘門 1道；在壓力前池電站進(jìn)水口設(shè)置攔污柵 1道共 3套，快速閘門 3套；設(shè)置 D=800mm閘閥沖沙。在尾水管出口設(shè)置尾水門槽 3孔，共用平板尾水閘門 2套。 1.7 施工 槐溝河水電站位于陜西省白水縣門公鄉(xiāng)槐溝河村境內(nèi)的洛河干流上。電站壩址距白水縣城 30km。其中，白水縣城到門公鄉(xiāng)長 22.5km，為已有的三（四）級瀝青公路，門公鄉(xiāng)到槐溝河村長 9km（ 4km為四級瀝青路面， 5km為可供小型拖拉機(jī)通行的盤溝小道），為已有的鄉(xiāng)村小路。賀蘇 壩址臨時施工道路已開通 ?；睖虾哟寰鄩沃?1km，為人行小道。西（安） 延（安）鐵路從村旁經(jīng)過。電站對外交通便利。 槐溝河水電站為徑流引水式發(fā)電工程。電站主要建筑物由漿砌石攔河大壩（最大壩高 21m），引水隧洞（長 856.1m，橫斷面尺寸 4 5m），引水明渠長 109m，斷面尺寸 4 4.5m）壓力前池、引水管道和廠房等組Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 成。電站裝機(jī)容量 6600kw（ 3臺單機(jī)容量為 2200kw的混流式機(jī)組），主要工程量是：土方明挖 2542m3，石方明挖 36914m3，石方洞挖 26930m3，砼 35604m3，鋼筋、鋼材 840T，漿砌石 61029m3，氯丁 膠 14.6T。 1.7.1 施工導(dǎo)流 結(jié)合大壩、廠房等主要建筑物的布置特點(diǎn)，并考慮到地形、地質(zhì)、水文等因素的影響，大壩施工期采用明渠導(dǎo)流方式，廠房施工期采用原河床導(dǎo)流方式。 1.7.2 施工交通及施工總布置 施工交通 對外交通主要工程量有：槐溝河村至門公鄉(xiāng) 5km 長的盤山道拓寬。賀蘇 槐溝河臨時道路整修，槐溝河村至壩址、廠址約 3km長四級公路，另外還包括一座長約 400的鋼筋砼板橋（設(shè)計標(biāo)準(zhǔn)為汽 20掛 80）。 場內(nèi)交通包括 2km長施工臨時道路和壩區(qū)一座長約 40m的臨時橋梁。 施工總布置 壩區(qū)拌合系統(tǒng) 設(shè)于壩下游右岸的灘地上，由 3 臺 1.2m3的強(qiáng)制式拌合機(jī)， 500m2的散裝水泥庫和成品料堆組成，廠區(qū)拌合系統(tǒng)位于廠房下游的左岸灘地上，由 2 臺 1.2m3強(qiáng)制式拌合機(jī)， 300m2的散裝水泥庫和成品Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 料堆組成。 1.7.3 施工總進(jìn)度 本工程施工總工期 24個月，其中，施工準(zhǔn)備期 8個月，主體工程施工期 14個月。發(fā)電收尾期 2個月。 施工準(zhǔn)備期從第 1年 1月正式開工至第 1年 9月初主河床截流。該期內(nèi)主要施工項目有：導(dǎo)流明渠、右副壩、引水洞開挖，廠區(qū)開挖及基礎(chǔ)砼。汛期停工。 主體工程施工期從第 1年 9月初到第 2年 12月底第 1臺機(jī)組 發(fā)電。該期內(nèi)主要施工項目有：溢流壩段，引水洞襯砌及灌漿，廠房及前池主體砼，金屬結(jié)構(gòu)安裝，壓力鋼管及第 1臺機(jī)組安裝等。汛期大壩停工。 1.8 水庫淹沒處理、工程永久地和環(huán)境影響評價 1.8.1 水庫淹沒處理及工程永久占地 根據(jù)業(yè)主提供的資料，在庫區(qū)內(nèi)相應(yīng)回水高程以下無居民和耕地，且在水庫正常蓄水位選擇中充分考慮了西延鐵路的防洪問題，使鐵路具有 200 年一遇的防洪標(biāo)準(zhǔn)，因此水庫不存在移民安置、土地賠償、鐵路淹沒等問題。 1.8.2 環(huán)境影響評價 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 本電站開發(fā)任務(wù)單一，興建該電站對環(huán)境的有利影表現(xiàn)在發(fā)電站的發(fā)電效益和 對庫區(qū)氣候的改善等方面；其不利影響表現(xiàn)在施工期“三廢”排放及施工占地影響。通過地方政府和施工承包方采取相應(yīng)安置和防護(hù)措施后，上述影響是可以消除的。 因此，從環(huán)境影響角度年，沒有制約本工程開發(fā)的重大環(huán)境問題，興建本電站是可行的。 1.9 工程投資估算 1.9.1 編制依據(jù) 陜西省計委陜計項目 20001045號文件陜西省水利水電工程設(shè)計概算編制辦法及費(fèi)用標(biāo)準(zhǔn)以及陜西省水利水電建筑工程預(yù)算定額等（以下簡稱“ 2000編制辦法”及“定額”）。 1.9.2 主要技術(shù)經(jīng)濟(jì)指標(biāo) 該工程總投資 6000萬元，固定資 產(chǎn)建設(shè)投資 5475萬元，預(yù)備費(fèi) 450萬元，工程總工期 2年，建設(shè)期還貸利息 75萬元。 1.10 經(jīng)濟(jì)評價 根據(jù)投資估算，槐溝河水電站總投資 6000 萬元，固定資產(chǎn)投資為5925萬元。計算期采用 20年，其中建設(shè)期 2年，生產(chǎn)期 18年，在還貸Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 期上網(wǎng)電價按 0.28元 /kwh計算，還清貸款后的年發(fā)電利潤為 625.3萬元。 電站還款資金包括利潤和折舊費(fèi)等，未分配利潤可全部都用于還款；這樣，電站投入運(yùn)行后的第 8年可還清固定資產(chǎn)貸本息，滿足還貸要求，另處，本工程僅在建設(shè)期的負(fù)債率較高，但隨著機(jī)組投入運(yùn)行，資產(chǎn)負(fù)債率很快下降。 在還清建設(shè)費(fèi)用貸款本息后，資產(chǎn)負(fù)債率很低，并呈逐年下降趨勢，計算期末趨于零。說明本項目的財務(wù)上風(fēng)險小，償還債務(wù)能力較強(qiáng)。 總之，按資金籌集貨款年利率 5.76%及 9年償還期（含建設(shè)期 1年），其財務(wù)內(nèi)部收益率為 11.58%，大于財務(wù)基準(zhǔn)收益率 8%，同時，財務(wù)凈現(xiàn)值為 645萬元，大于零，說明本工程在財務(wù)上是可行的。 1.11 存在問題及今后工作建議 （ 1）鑒于本階段設(shè)計成果要求緊迫，時間短促，測量資料、地勘資料不全，下一階段進(jìn)一步補(bǔ)充推薦方案壩址、引水洞線、壓力前池、壓力管道和電站廠房等部必須進(jìn)行必要的地質(zhì)勘探和 方案比較，為設(shè)計提供可靠資料。 （ 2）本電站裝機(jī)容量限于時間和資料方面的限制暫按最低方案提Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 出，初步設(shè)計將作進(jìn)一步論證。 （ 3）由于計算橡膠壩放空塌落泄洪時流量系數(shù)是一個關(guān)鍵因素，而本階段作過壩洪不計算時限于時間和資料不齊全等原因，所選用的流量系數(shù)是參考常規(guī)工程的取值。為確保庫區(qū)西延鐵路的安全，建議在下階段應(yīng)作進(jìn)一步試驗和仔細(xì)研究或進(jìn)行充分的調(diào)研以核實測量系數(shù)。 （ 4）由于廠址下游王莽寨電站相當(dāng)近，建議下階段業(yè)主對王莽寨電站庫區(qū)補(bǔ)充必要的測量工作為初步設(shè)計提供準(zhǔn)確可靠的資料。 1.12 工程特性表 第二章 水 文、泥沙 2.1 流域概況 洛河為渭河左岸的一級支流，發(fā)源于陜西省定邊縣白于山南麓，干流經(jīng)我省的吳旗、志丹、甘泉、富縣、洛川、黃陵、白水、蒲城、澄城于大荔縣東南注入渭河；全長 680km，流域面積 26905km2，河道平均比降 1.5 ，流域呈羽毛形。 壩址位于白水縣槐溝河村東北約 1km 的河道轉(zhuǎn)彎處，廠房位于鐵橋下游約 300m，距五峰水電站 17.3km。壩址以上控制流域面積 21246km2，Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 占全流域面積的 79.0%，占 氵狀 頭水文站控制流域面積 25154km2 的84.5%。洛河干流分別在王家村、三眼橋附近進(jìn)出 白水縣境，縣境內(nèi)河道落差 175m，河長 59.5km，比降 2.9 。流域地貌系由陜北黃土高原和渭北黃土臺塬組成，流域植被較差，水土流失嚴(yán)重。（見圖 2 1） 2.2 氣象 降水與蒸發(fā)：流域多年平均降水量 540mm，降水量年內(nèi)分布不均，年際變化大， 7 9月降水量約占年降水量 50%左右。多年平均水面蒸發(fā)量為 1000 1100mm。 氣溫：本流域年平均氣溫 11.4。據(jù)白水縣氣象站資料統(tǒng)計，最高氣溫 39.4，最低氣溫 -16.7。 風(fēng)速、風(fēng)向：冬季盛行西北風(fēng)，夏季多為東南風(fēng)。多年平均風(fēng)速3.4m/s，實測最大風(fēng)速為 25m/s（ NNW）。 霜、凍：據(jù)白水縣氣象站統(tǒng)計，初霜 10月下旬，終霜 3月下旬，無霜期 211天。土壤冰凍以 12 2月最為嚴(yán)重，最大凍土層厚度為 0.69m。 水溫：據(jù)交口河水文站統(tǒng)計，多年平均水溫 13.4，最高水溫多發(fā)生在 7、 8月份，其平均值為 25.3，最高水溫為 31.2；最低水溫 0，一般發(fā)生在 11月 1月。 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 冰情：據(jù)交口河水文站資料，初冰時間為 10月下旬到 12月上旬；終冰時間為 2月下旬到 4月上旬；封凍時間為 11月下旬到 2月上旬；解凍時間為 2月上旬到 3月上旬；河道實際封凍天數(shù)最多為 94天，最少為1天 ，最大凍厚河心平均 0.32m，岸邊 0.36m。 2.3 水文資料 槐溝河水電站壩址處無水文測站。而在其上下游分別有 1952年建站的交口水文站和 1933年建站的狀頭水文站。由于洛河徑流主要來源于交口以下的中游地區(qū)，且槐溝河又與狀頭同屬于一個水文氣候區(qū)，其降水、徑流、暴雨洪水等特性相一致，所以采用狀頭水文站作為槐溝河水文計算的參證站。 根據(jù)水利水電工程水文計算規(guī)范，可以將 氵狀 頭徑流資料按流域面積比例法，移用到槐溝河水電站上。 依據(jù) 氵狀 頭站 1933 1998年 66年多年平均徑流量 8.77億 m3,乘以槐溝河 與 氵狀 頭流域面積比例系數(shù) 0.845，即得槐溝河水電站多年平均徑流量為 7.41億 m3，相應(yīng)多年流量為 23.5 m3/s。 2.4 徑流 水流域徑流主要由降水補(bǔ)給，降水受大氣環(huán)流和季風(fēng)的影響，河川Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 徑流年際變化大，年內(nèi)分配不均勻。 氵狀 頭水文站在 1933 1998 年 66 年實測資料中，最大年徑流量為20.15 億 m3（ 1964 年），最小年徑流量為 4.38 億 m3（ 1936 年），最大與最小值之比為 4.6，多年平均徑流量為 8.59億 m3，按面積比擬法換算到槐溝河水電站斷面，多年平均徑流量為 7.41億 m3，相應(yīng)多年平均流 量為23.5m3/s。 2.4.1 年徑流計算 年徑流頻率計算成果采用 氵狀 頭站 1933 1998年 66年的水文系列進(jìn)行計算，采用 P 型曲線，均值 W=8.59億 m3， CV=0.34， CS=2.5CV?；睖虾与娬景疵娣e比擬法求得，其均值 7.26 億 m3， CV與 CS與 氵狀 頭相同。年徑流頻率計算成果見表 2 1。 氵狀 頭站年徑流頻率曲線見圖 2 2。 氵狀 頭站不同頻率年徑流量表 表 2 1 P（ %） 1 2 5 10 15 20 50 75 85 90 95 徑流量（億 m3） 17.09 15.81 14 12.54 11.6 10.82 8.16 6.44 5.8 5.24 4.64 流量 54.2 50.1 44.4 39.8 36.8 34.3 25.9 20.4 18.4 16.6 14.7 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - （ m3/s） 槐溝河電站壩址不同頻率年徑流量表 表 2 2 P（ %） 1 2 5 10 15 20 50 75 85 90 95 徑流量（億 m3） 14.44 13.36 11.83 10.6 9.8 9.14 6.9 5.44 4.9 4.43 3.92 流量（ m3/s） 45.8 42.4 37.5 33.6 31.1 29 21.9 17.2 15.5 14 12.4 2.4.2 代表段選擇 按規(guī)范規(guī)定，代表段均值、變差系數(shù)應(yīng)與長系列接近。選擇 氵狀 頭站1966 1998 年 33 年徑流系列作為代表段。 氵狀 頭站 33 年徑系列均值為8.58億 m3， CV=0.29，與 1933 1998年長系列均值 8.59億 m3， CV=0.34接近，且包括平、枯、豐水年，并且是兩個完整地周期。由于計算技術(shù)的發(fā)展，本次采用 1954 1998年全部徑流系列作為水能計算依據(jù)。 槐溝河電站壩址徑流年內(nèi)日分配采用 氵狀 頭站徑流的年內(nèi) 分配系數(shù)乘以槐溝河的年徑流計算。 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 2.5 洪水 2.5.1 洪水特性及最大洪峰流量的采用 洛河流域的洪水系暴雨形成，而且，一般暴雨和局部暴雨居多。經(jīng)對洛河交口 氵狀 頭河段 1952 年 1994 年 43 年洪水資料分析，洪峰流量與流域面積無明顯關(guān)系。其中 13年洪水，年最大洪峰流量自上而下遞增，占 30%；而 30 年洪水，年最大洪峰流量自上而下遞減，占 70%。即多數(shù)年的洪水隨面積增加而減小?；睖虾铀娬臼潜竞佣翁菁墸遗c 氵狀 頭站面積僅差 15.5%，因此，槐溝河水電站洪水，如同本河段五峰、狄家河等梯級一樣，可以直接引 用 氵狀 頭洪峰流量頻率計算成果。 槐溝河水電站年最大洪峰流量頻率計算表見表 2 3， 氵狀 頭年最大洪峰流量頻率曲線見圖 2 3。 槐溝河水電站最大洪峰流量計算成果表 表 2 3 計算值 采用值 頻 率（ P%） Q （ m3/s） CV CS Q （ m3/s） CV CS 0.5 1 2 3.3 5 10 20 50 1197 1.25 3 1200 1.4 3 10600 8610 6720 5400 4380 2810 1560 720 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - CV CV 2.5.2 槐溝河水電站設(shè)計洪水 槐溝河水電站 為 4級建筑物，其洪水標(biāo)準(zhǔn)及洪峰流量見表 2 4。 槐溝河水電站設(shè)計洪水 表 2 4 建筑物及斷面 洪水標(biāo)準(zhǔn) 洪峰流量（ m3/s） 備注 大 壩 設(shè)計洪水（ P=3.3%） 30年一遇 校核洪水（ P=0.5%） 200年一遇 5400 10600 廠 房 設(shè)計洪水（ P=5%） 20年一遇 校核洪水（ P=1%） 100年一遇 4380 8610 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 根據(jù)洪水規(guī)律及施工期的防洪需要，對 11 3月、 11 4月及 11 5月等分期洪水進(jìn)行了分析。采用 氵狀 頭站實測流量資料，在分期內(nèi)選取最大值，分期設(shè)計洪水的統(tǒng)計參 數(shù)計算和適線原則與最大洪水計算相同。 各分期設(shè)計洪水頻率計算成果見表 2 5，其頻率曲線見圖 2 4。 槐溝河水電站分期設(shè)計洪水計算成果表 表 2 5 分期 （月） 統(tǒng)計參數(shù) 頻 率（ P%） Q CV CS/ CV 1 2 5 10 20 30 11 3 44 0.6 3 136 119 96 78 60 50 11 4 51 0.65 3 169 146 117 94 71 58 11 5 77 0.83 3 322 271 205 156 110 84 10 4 81 0.81 3 331 279 212 163 115 89 10 5 110 0.72 2.5 386 335 266 214 160 129 2.6 水位流量關(guān)系曲線 2.6.1 水位流量關(guān)系曲線 在壩址與廠址處，目前尚未無觀測斷面和水尺，現(xiàn)暫按實測當(dāng)前水Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 位、反推流量、歷史洪水調(diào)查水位及河床縱比降等，按照曼寧公式Q=1/n R2/3i1/2選用河床糙率， n=0.04， 以大小水（大水 6280m3/s，小水 6m3/s）控制，調(diào)整水力坡降繪制而成。 壩址水位流量關(guān)系曲線見圖 2 5 廠址水位流量關(guān)系曲線見圖 2 6 2.6.2 壩址、廠址水位流量關(guān)系線 根據(jù)壩址、廠址下游水位流量關(guān)系曲線查得各設(shè)計洪水位，列于表 2 6。 槐溝河水電站壩址、廠址下游設(shè)計洪水位 表 2 6 建筑物及斷面 洪水標(biāo)準(zhǔn) 洪峰流量（ m3/s） 洪水位（ m） 大 壩 設(shè)計（ P=3.3%） 30年一遇 校核（ P=0.5%） 200年一遇 5400 10600 565.9 568.8 廠 房 設(shè)計（ P=5%） 20年一遇 校核（ P=1%） 100年一遇 4380 8610 553.9 556.2 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 2.7 泥沙 洛河為多沙河流，水沙關(guān)系基本是水大 沙大。據(jù)狀頭站實測泥沙資料統(tǒng)計，最大年輸沙量為 22000 萬 t（ 1996 年），最小年輸沙量為 1400萬（ 1939年），多年平均懸移質(zhì)年輸沙量為 8524萬 t，汛期為 7848萬 t，占年輸沙量 92%，最大含沙量可達(dá) 1340kg/m3（ 1945年 9月 26日），平均含沙量 97.1kg/m3。 氵狀 頭站 1971 1980 年平均懸移移質(zhì)顆粒級配列表 2 7、圖 2 7?；睖虾铀娬灸嗌迟Y料，均使用狀頭站統(tǒng)計成果。 氵狀 頭站歷年懸移質(zhì)顆粒級配表 表 2 7 平均小于某粒徑沙重百分?jǐn)?shù) 粒徑級（ mm） 中數(shù) 粒徑 平均粒徑 0.07 9.6 0.010 14.1 0.025 30.3 0.050 64.9 0.10 96.3 0.25 99.7 0.5 99.9 1.0 0.039 （ mm） 0.039 (mm) 0.043 第三章 工程地質(zhì) 3.1 概述 Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 本工程勘測資料，系甲方提供的陜西省白水縣槐溝河水電站工程地質(zhì)說明書，該說明書是參考陜西省地礦廳水文地質(zhì)二隊蒲城縣、白水縣農(nóng)田供水水文地質(zhì)報告（ 1974 年 12 月），結(jié)合水庫路線地質(zhì)踏勘及壩址區(qū)、隧洞線路，廠房區(qū)地質(zhì)剖面測繪所獲得的資料編制的。巖石物理力學(xué)參數(shù)采用工程地質(zhì) 類比法提出的建議值。 3.2 區(qū)域地質(zhì)概況 3.2.1 地形地貌 槐溝河水電站位于北洛河中下游，屬渭北低山溝谷黃土臺塬區(qū)。地形切割較劇，溝壑縱橫、黃土沖溝發(fā)育，地形相對高差 150 200m。洛河在庫壩區(qū)呈“ S”型彎曲，河谷為不對程的“ U”型谷，庫區(qū)右陡左緩，下游左陡右緩。河谷階地不甚發(fā)育?？梢姷碾A地為基座階地。河谷寬100 150m，平水期水深 0.5 3.5m。兩岸基巖大部裸露，河床偶見少量覆蓋層。 3.2.2 地層巖性 本區(qū)出露地層主要由古生界三迭系上統(tǒng)石千峰組（ P2Sq）第三、四巖段陸相碎屑巖和第四系松 散堆積層組成。 石千峰組第三巖段（ P2Sq3），為土紅色或磚紅色厚 巨厚層狀長石Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aahF - Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingL inesToPoction.ParagraphForm Selection.ParagraphForm aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToP oints(2Selection.ParagraphFormat.LineSpacingL inesToPoints(2) Selection.ParagraphFormat.LineSpacingL inesToPointselection.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFormat.LineSpacingLinesToPoction.ParagraphFormat.LineSpacingLinesToPoints(2)Selection.ParagraphFaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa hF - 石英細(xì)砂巖，間夾薄層青灰色頁巖。該地層中夾透鏡狀土紅色、青灰色礫巖為其特點(diǎn)。 石千峰第四四巖段（ P2Sq4），為土紅色或紫紅色泥巖夾 2 3層薄層泥質(zhì)粉砂巖。泥巖中富含灰綠色泥質(zhì)條帶和園形綠斑為其特征。 第四系地層有： 中更新統(tǒng)（ Q2），由黃土狀亞粘土夾古土壤組成。有的地段層中夾僵結(jié)石及蝸牛。分布于河谷兩岸高階地和黃土臺塬中。 上更新統(tǒng)（ Q3），由沖積黃土、亞砂土夾卵礫石組成。分布于二級階地及三級階地。 全新統(tǒng)（ Q4）、為粉質(zhì)砂 土及砂礫石，見于河漫灘及河谷一級階地。尚可見河谷斜坡上的坡積碎石土及坡腳處塊碎石崩積層。 3.2