DB11∕T 2074-2022 城鎮(zhèn)排水防澇系統(tǒng)數(shù)學(xué)模型構(gòu)建與應(yīng)用技術(shù)規(guī)程

2022-12-29發(fā)布2023-07-01實(shí)施北京市規(guī)劃和自然資源委員會(huì)城鎮(zhèn)排水防澇系統(tǒng)數(shù)學(xué)模型構(gòu)建與應(yīng)用技術(shù)規(guī)程mathematicalmodelDB11/T2074—20222022北京釋。（地址：北京市西城區(qū)南禮士路60號(hào)；郵政編碼：100045；電子郵 2 4 5 5 5 6 9 2 44Modeldevelopmentandte 5 5 5 6 95Parametercalibrationandmodel 5.2Calibrationandvalidat 7Formulationofmodelresults AppendixAParametersofsourcecontrolfacilitiesmodel AppendixBDesignrainfallandschedulesi Explanationofwordinginthisspecification Listofquotedstandards Addition：Explanationofprovisions 1.0.1為提升北京市城鎮(zhèn)排水防澇系統(tǒng)規(guī)劃、設(shè)計(jì)和管理水平及成1.0.3城鎮(zhèn)排水防澇系統(tǒng)數(shù)學(xué)模型除應(yīng)符合本規(guī)程外，尚應(yīng)符合國(guó)2.0.1城鎮(zhèn)排水防澇系統(tǒng)數(shù)學(xué)模型mathematicalmodelofurban2.0.6地表漫流模型overlan基于城鎮(zhèn)排水防澇系統(tǒng)主要要素特征進(jìn)行概化模擬2.0.10雨量徑流系數(shù)volumetricruno2.0.11流量徑流系數(shù)dischargerun22.0.13參數(shù)率定paramet3.0.1在城鎮(zhèn)排水防澇系統(tǒng)規(guī)劃、設(shè)計(jì)工作中應(yīng)構(gòu)建數(shù)學(xué)模型，分3.0.3模型的構(gòu)建和應(yīng)用應(yīng)明確設(shè)計(jì)工況、模型方法、參數(shù)選取和454.2.1模型基礎(chǔ)數(shù)據(jù)資料宜包括降雨資料、地面高程資料、下墊面4.2.2模型應(yīng)收集的降雨資料通常包括長(zhǎng)序列歷史降雨資料、場(chǎng)次3設(shè)計(jì)降雨常用于分析一定重現(xiàn)期標(biāo)準(zhǔn)下的城鎮(zhèn)排水防澇系統(tǒng)64.2.5城鎮(zhèn)河道（蓄澇區(qū)）資料宜包括：流域范圍、河道斷面高程4.2.6流量和水位監(jiān)測(cè)資料應(yīng)符合現(xiàn)行國(guó)家標(biāo)準(zhǔn)《城市排水防澇設(shè)4.3.1模型數(shù)據(jù)整理與導(dǎo)入過程應(yīng)包括數(shù)據(jù)導(dǎo)入模型軟件、評(píng)估缺4.3.2模型中的設(shè)計(jì)降雨應(yīng)根據(jù)城市氣象規(guī)律、匯水區(qū)域特征以及7法8將匯水區(qū)域劃分成為有限個(gè)等流時(shí)塊，每1管渠內(nèi)的水流運(yùn)動(dòng)模擬應(yīng)采用基于一維圣維南方程組的數(shù)值表4.3.5-2不同表面特征的河道粗糙系數(shù)（曼94.3.6地表漫溢模型和地表漫流模4.4.1在模型應(yīng)用前，應(yīng)對(duì)模型中排水防澇系統(tǒng)構(gòu)成要素空間分布4.4.2在模型應(yīng)用前，應(yīng)對(duì)模型運(yùn)行的穩(wěn)定性進(jìn)行測(cè)試和修正，修5.1.2參數(shù)率定與模型驗(yàn)證前，應(yīng)根據(jù)模型方法確定率定參數(shù)，并1評(píng)估實(shí)測(cè)數(shù)據(jù)可用性,確保用于參數(shù)率定和模型驗(yàn)證的數(shù)據(jù)滿5.2.4詳細(xì)模型開展參數(shù)率定與模型驗(yàn)證時(shí)，除了滿足本規(guī)程第6.0.1框架模型模擬對(duì)象應(yīng)包括地形，模擬計(jì)算應(yīng)考慮排水防澇系6.0.2概化模型模擬對(duì)象應(yīng)包括地形、河道、蓄澇區(qū)、雨水管渠干6.0.3詳細(xì)模型模擬對(duì)象應(yīng)包括地形、河道、蓄澇區(qū)、雨水管渠、6.0.4傳統(tǒng)雨水管渠規(guī)劃、設(shè)計(jì)方案宜采用數(shù)學(xué)模型法進(jìn)行校核；7.2.1專題報(bào)告應(yīng)包含項(xiàng)目概況、資料收集、模型構(gòu)建與測(cè)試、參7.2.2模型附件應(yīng)包括模型說明文件和模型工程文件，可附加模型7.2.3模型說明文件內(nèi)容應(yīng)包括基礎(chǔ)數(shù)據(jù)說明、模型參數(shù)取值、模7.2.4模型工程文件應(yīng)包括模型空7.2.6模型監(jiān)測(cè)數(shù)據(jù)記錄宜包括測(cè)點(diǎn)分布圖、測(cè)點(diǎn)現(xiàn)場(chǎng)情況記錄及7.2.7模型過程數(shù)據(jù)宜包括參數(shù)率定與模型驗(yàn)證、工況分析等各階A.0.2依據(jù)源頭減排設(shè)施類型，其模型宜包括：生物滯留池、雨水A.0.3源頭減排設(shè)施模型各單體模塊可由表面層、蓄水層、路面透表A.0.3源頭減排設(shè)施模型各單體模塊結(jié)構(gòu)組成表vvv*vvvvvvv*vvv**vvA.0.4源頭減排設(shè)施模型各結(jié)構(gòu)層主要參數(shù)詳見表A.0.4-1，表A.0.4-1源頭減排設(shè)施模型各結(jié)構(gòu)層主要參數(shù)表表A.0.4-2綠色屋頂部分參數(shù)取值參考表A.0.4-3生物滯留設(shè)施部分參數(shù)取值參考表A.0.4-4植草溝部分參數(shù)取值參考表A.0.4-6透水鋪裝部分參數(shù)取值參考表A.0.4-7不同土壤類型參數(shù)取值參考B.0.1北京市設(shè)計(jì)降雨計(jì)算方法應(yīng)符合北京市現(xiàn)行地方序號(hào)123456789序號(hào)序號(hào)123456789序號(hào)B.0.3短歷時(shí)設(shè)計(jì)降雨各歷時(shí)雨量計(jì)算應(yīng)根據(jù)現(xiàn)行北京市123456789123456789序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H510.3320.2330.3940.3650.4460.4970.3680.1690.230.420.290.160.260.360.210.31序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.931.691.43201.32211.61221.95231.01240.86250.73260.93270.93281.43292.81303.42315.78325.17334.79341.21351.81361.89372.13382.58391.98402.89414.18425.784310.26445.93457.22464.79475.93486.23494.33508.06517.64529.03539.4454559.31566.67576.25序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H5587.36598.33609.72618.196213.646317.886416.066522.126616.676713.636813.936914.847019.247115.647221.787312.97410.997519.457625.737719.087820.237913.92808.588112.468247.43838452.578538.548637.728723.748841.858926.699031.469138.59236.639324.879414.619521.249619.639715.75983.72序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H5992.742.431.711.621.141.662.521.811.283.281.991.571.521.471.051.5711.282.522.282.763.423.84.9420.620.430.480.480.710.670.710.380.380.520.380.430.34序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.290.240.480.670.330.380.430.380.330.380.330.430.570.370.240.320.420.370.560.6112.047.797.135.041.953.991.522.00.570.360.420.420.440.39序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.330.180.310.340.360.550.262000.262010.182020.262031.482040.882050.472060.342070.62081.792090.62100.292110.392120.212130.292140.862150.962160.472170.342180.362190.492200.62210.39序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H52220.472230.362240.72252.492265.482273.272282291.222300.72311.122321.532331.432341.222350.752360.472370.342380.262390.232400.422410.652420.492430.442440.522450.472460.312470.442480.442490.342500.312510.362520.422530.392540.392550.552560.72570.752580.782590.522600.62610.862620.7序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H52631.432640.862650.732660.522670.832680.672690.912700.732711.122720.992730.522740.672751.122761.172770.992782.992791.822800.522810.162820.622831.132841.052851.162860.412870.382880.18序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H510.0020.0030.0040.0050.0060.0070.0080.0090.000.000.00序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.000.000.000.000.000.000.020.02200.02210.00220.01230.01240.01250.00260.00270.00280.08290.03300.01310.00320.19330.04340.03350.08360.02370.12380.28390.27400.27410.28420.03430.15440.40450.54460.36471.06481.46491.80501.84513.32528.16序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H5535.57545.08553.66563.89572.58582.20592.11602.41613.69623.86634.35644.20653.32662.62672.32681.28691.44700.79710.59720.40730.47740.92751.34760.50770.52780.45790.39800.47810.46820.41830.41840.47850.52860.52870.51880.73890.73900.73910.40920.39930.34序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H5940.34950.25960.25970.25980.25990.300.070.070.090.370.380.370.300.240.510.490.280.220.270.250.080.500.360.310.310.28序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.290.280.300.030.030.040.030.030.030.041.592.460.761.850.650.390.580.951.112.354.183.622.710.960.530.460.830.751.261.601.660.910.830.910.85序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H51.061.041.651.231.623.404.201.040.960.881.480.560.632.953.793.133.735.944.664.183.592004.9420129.2920239.6920346.6720420553.3320634.5520725.7620849.8820920.8221041.0221130.7921228.1921317.5221415.0621519.1221626.12序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H521710.9321811.2521916.0222014.8622116.8022213.8822319.7422418.7122525.2322615.7322712.4622816.7622913.6323016.1923120.9023218.2123313.2423412.8823515.1423619.6423713.1923816.1923917.9224011.332417.712427.592435.302445.372453.182464.002473.642484.582494.912504.192515.222525.122533.842544.522554.542564.052573.24序號(hào)H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H52583.262594.262604.702614.862623.852632.532641.632651.542661.682671.432681.232692.092701.822711.402721.392731.902741.092751.782763.182771.672782.112791.642800.832811.042821.082831.302841.412851.772861.552871.032880.79B.0.5長(zhǎng)歷時(shí)設(shè)計(jì)降雨各歷時(shí)雨量大小應(yīng)根據(jù)現(xiàn)行《北京市水文手本規(guī)程用詞說明引用標(biāo)準(zhǔn)名錄2022北京城鎮(zhèn)排水防澇系統(tǒng)數(shù)學(xué)模型構(gòu)建與應(yīng)用技術(shù)規(guī)程DB11/T2074—2022條文說明 3.0.1本條規(guī)定了城鎮(zhèn)排水防澇系統(tǒng)數(shù)√√√料影；激光雷達(dá)測(cè)量；豎向√√√√√√料置；雨水口位置及規(guī)檢查井標(biāo)高和尺寸；管√√√√現(xiàn)場(chǎng)監(jiān)測(cè)和歷史記錄；防掘√√料制設(shè)施（閘、閥、堰√√件√√√形態(tài)（如河道的橫、縱斷面以便計(jì)算水流運(yùn)動(dòng)過程中的各個(gè)水力要素；分區(qū)（3）涵洞、閘壩、排澇泵站及跨河建（構(gòu)）筑物資料主要包括：構(gòu)筑物結(jié)題或可疑數(shù)據(jù)，提出解決措施，包括通過人工測(cè)量、CCTV（ClosedCircuit程，或根據(jù)數(shù)字高程模型推斷；對(duì)于積水點(diǎn)處的檢查井和（4）管渠高程缺失，可綜合考慮管渠坡度、埋深、上下游管渠高程等進(jìn)行4.3.2根據(jù)水文計(jì)算原理，設(shè)計(jì)降雨總歷時(shí)不應(yīng)小時(shí)可參考北京市現(xiàn)行地方標(biāo)準(zhǔn)《城鎮(zhèn)雨水系統(tǒng)規(guī)劃設(shè)計(jì)暴雨徑流計(jì)算標(biāo)準(zhǔn)》111地下室覆土綠地(≥500mm）地下室覆土綠地500mm） 期期(≤5(>5年且(>10年且(>20年且(>30年且期(>數(shù)數(shù)-2+inn（1）12345A=Σi（2）12345640~75789地不透水面積比典型取值為50%~80%，風(fēng)景名勝設(shè)施用地不透水面積比典型取值為面匯流的過程，因此降雨徑流相關(guān)圖法常用于較大流域（通常為城abn11111一k0tx一k0txf0——初始下滲率（mm/hABCD是指砂質(zhì)黏壤土；D類土壤是指黏壤土、粉質(zhì)黏壤土、砂質(zhì)黏土、粉降雨量（mm）6050403020降雨量（mm）60504030200（平割法）損失量 12345678910111213141516171時(shí)段（h）要是指水文響應(yīng)單元或匯水區(qū)域內(nèi)的匯流計(jì)算，即對(duì)L——地面流行距離（mN值等流時(shí)塊的劃分通常需根據(jù)匯水區(qū)域的形狀和影響地表匯流路徑的地形地 Q1=(P1/10)×q1;Q2=(P1/10)×q2+(P2/10)Q3=(P1/10)×q3+(P2/10)×q2+(P3/10)×q14.3.5管渠內(nèi)水流運(yùn)動(dòng)過程通?？刹捎猛耆蚝?jiǎn)化求解的一維圣維南方程組進(jìn)水動(dòng)力學(xué)模型涉及的主要參數(shù)包括管渠/河道粗糙系數(shù)和節(jié)點(diǎn)局部水頭損失堰和斷面突變處等其局部水頭損失系數(shù)應(yīng)根據(jù)實(shí)測(cè)數(shù)據(jù)分析確定，不4.3.6地表漫溢模型和地表漫流模型一般需先構(gòu)建規(guī)則網(wǎng)格的地形數(shù)字高程模的地表積水深度以及范圍（平靜水面方法但該方法一般無法準(zhǔn)確體現(xiàn)地表積地貌特征，如建筑物分布、小區(qū)圍墻、道路以及量（管網(wǎng)耦合節(jié)點(diǎn)與地表二維網(wǎng)格的最大交換流量限值避免由于節(jié)點(diǎn)通量設(shè)別低強(qiáng)度多峰值的降雨事件重點(diǎn)考查模型在長(zhǎng)期降雨過程中是否能穩(wěn)定運(yùn)行低重現(xiàn)期降雨事件和高重現(xiàn)期降雨事件主要是用于評(píng)估模型的連續(xù)性相對(duì)2）檢查節(jié)點(diǎn)縱斷面圖，觀察是否是由于井底標(biāo)高過低1）檢查管渠縱斷面圖，觀察是否存在管渠逆坡或錯(cuò)位導(dǎo)致永久蓄水（1）管渠水動(dòng)力學(xué)模型：歷史場(chǎng)次降雨過程的雨量監(jiān)測(cè)數(shù)據(jù)以及降雨發(fā)生（2）地表漫溢模型和地表漫流模型：如果模型模擬區(qū)域?yàn)橄鄬?duì)閉合的匯水（3）對(duì)于包含下凹橋和低洼區(qū)域的模型，需要下凹橋和低洼區(qū)域的積水深（4）對(duì)于包含天然或人工河道的模型，需要降雨發(fā)生前和整個(gè)降雨事件過5.2.1參數(shù)率定與模型驗(yàn)證應(yīng)至擬區(qū)域的空間代表性，并應(yīng)對(duì)前期降雨和土壤濕模型方法與傳統(tǒng)的水力計(jì)算方法相比，其計(jì)算結(jié)果與管網(wǎng)實(shí)際運(yùn)行狀態(tài)更吻合。管網(wǎng)人為做出的流域劃分假定而引起的潛在設(shè)計(jì)風(fēng)險(xiǎn)，地形條件，核算各子匯水區(qū)流量徑流系數(shù)為0.55~0.75，地面集水時(shí)間為00000000管渠水動(dòng)力學(xué)模型采用動(dòng)力波方法模擬，模擬計(jì)算步長(zhǎng)為1min，總有時(shí)部分下游管渠校核標(biāo)準(zhǔn)較高是由于上游管渠能力不足，限制了下泄的流量，的試算，再逐漸減少管渠規(guī)模，直至管渠能力適宜再按照“從下游至上游”的高程，從而優(yōu)化調(diào)整設(shè)計(jì)流量的分配；通過減小下游超標(biāo)管渠的尺寸或坡度，從而降低管渠富余的排水能力，最終實(shí)現(xiàn)全部管渠滿足設(shè)計(jì)標(biāo)準(zhǔn)要求，如圖112）明確建模的預(yù)期目標(biāo)以及選用的模型類型，例如“本次模型構(gòu)建以識(shí)別3）明確選用的模型軟件名稱及版本號(hào)，自主研發(fā)模型需要詳細(xì)介紹模型產(chǎn)4）對(duì)區(qū)域氣象水文、人口概況、地形地貌、排水單元?jiǎng)澐?、排水防澇系統(tǒng)5）繪制項(xiàng)目實(shí)施技術(shù)路線圖，技術(shù)路線圖能夠清晰反映模型模擬的關(guān)鍵環(huán)1）模型構(gòu)建說明部分應(yīng)對(duì)產(chǎn)流模型、匯流模型、管渠（河道）水動(dòng)2）模型邊界條件及初始參數(shù)設(shè)置內(nèi)容應(yīng)重點(diǎn)闡述模型邊界條件設(shè)置，并列3）模型測(cè)試應(yīng)包括模型中排水防澇系統(tǒng)構(gòu)成要素空間分布和連接情況核實(shí)（5）模擬工況章節(jié)應(yīng)以表格形式給出所有模擬工況，并對(duì)每種工況構(gòu)建的（6）模擬結(jié)果分析章節(jié)應(yīng)對(duì)每種工況的模擬結(jié)果進(jìn)行分析，必要時(shí)需進(jìn)行（7）應(yīng)用結(jié)論章節(jié)應(yīng)針對(duì)不同模型工況的模擬結(jié)果給出明確的應(yīng)用結(jié)論。A.0.1源頭減排設(shè)施通常以低影響開發(fā)設(shè)施（LID）為主，主要通過綠色屋頂、要參數(shù)包