棟梁坡隧道四電接口施工技術(shù)交底

新建滬昆客專貴州段CKGZTJ—3標(biāo)段棟梁坡隧道四電接口技術(shù)交底案編制：復(fù)核：審核：中國(guó)交通建設(shè)股份有限公司滬昆客專貴州段工程第一項(xiàng)目經(jīng)理部二〇一一年六月目錄TOC\o"1-2"\h\z\u1、工程概況 12、四電接口施工項(xiàng)目及主要工程量 12.1四電接口主要施工項(xiàng)目 12.2四電接口項(xiàng)目主要工程量 23、綜合洞室、變壓器洞室及過(guò)軌管線 73.1綜合洞室、變壓器洞室 73.2進(jìn)出口過(guò)軌管線 154、隧道綜合接地 194.1初期支護(hù)接地 194.2二次襯砌綜合接地 204.3明洞仰拱綜合接地 214.4綜合接地鋼筋布設(shè)位置 225、接觸網(wǎng)預(yù)埋槽道施工 325.1預(yù)埋槽道主要規(guī)格型號(hào) 325.2槽道里程、位置、型號(hào)、偏差控制 335.3施工工藝流程 365.4施工方法 375.5Ⅳa、Ⅲ級(jí)圍巖地段預(yù)埋加固措施 405.6槽道二次定位 436、二襯防閃絡(luò)接地鋼筋焊接 687、水溝電纜槽接地系統(tǒng) 698、其它施工要求及注意事項(xiàng) 758.1綜合洞室 758.2過(guò)軌管線 758.3綜合接地 768.4預(yù)留槽道 778.5接地端子 78

棟梁坡隧道進(jìn)口四電接口施工技術(shù)交底1、工程概況棟梁坡隧道全長(zhǎng)9294米，起訖里程為DK499+055～DK508+349。隧道施工主要有進(jìn)口、1#斜井、2#斜井、出口和平導(dǎo)五個(gè)工作面，，其中明洞36m，Ⅴc長(zhǎng)度1130m,Ⅴb長(zhǎng)度181m,Va長(zhǎng)度274m，Ⅳa長(zhǎng)度2823m,Ⅲa長(zhǎng)度4850m。2、四電接口施工項(xiàng)目及主要工程量2.1四電接口主要施工項(xiàng)目技術(shù)是系統(tǒng)集成技術(shù)的重要內(nèi)容之一，站后預(yù)留接口質(zhì)量直接影響客運(yùn)專線的整體性，對(duì)建成后運(yùn)營(yíng)至關(guān)重要，對(duì)于土建施工為主的單位是一個(gè)重要的內(nèi)容，站后預(yù)留接口施工及站前土建同步施作，接口構(gòu)件需要在混凝土內(nèi)提前進(jìn)行預(yù)埋，要做到預(yù)留正確，規(guī)范到位，無(wú)遺漏，滿足站后“四電”專業(yè)功能使用條件。隧道內(nèi)接口工程見(jiàn)下表：隧道四電接口主要項(xiàng)目?jī)?nèi)容列項(xiàng)表2.2四電接口項(xiàng)目主要工程量根據(jù)四電接口主要項(xiàng)目劃分結(jié)合棟梁坡隧道設(shè)計(jì)圖紙進(jìn)行統(tǒng)計(jì)計(jì)算，本隧道接觸網(wǎng)預(yù)埋槽道、綜合接地鋼筋、綜合洞室接地端子及過(guò)軌管、進(jìn)出口過(guò)軌管、水溝電纜槽接地端子等詳細(xì)布置見(jiàn)附件棟梁坡隧道四電接口施工平面圖和工程數(shù)量表：棟梁坡隧道進(jìn)口四電接口施工主要工程量及說(shuō)明管段長(zhǎng)度：1910m起訖里程：DK499+055～DK500+965施工單位：中國(guó)交通建設(shè)股份有限公司滬昆客專貴州段工程指揮部第1項(xiàng)目部項(xiàng)目?jī)?nèi)容主要項(xiàng)目技術(shù)要求及說(shuō)明預(yù)埋槽道型號(hào)規(guī)格每組數(shù)量（根）槽道組間距（mm）相對(duì)隧道中線位置數(shù)量（組）合計(jì)長(zhǎng)度（m）總計(jì)長(zhǎng)度（m）Ⅳa、Ⅲ級(jí)圍巖地段預(yù)埋數(shù)量及加強(qiáng)措施數(shù)量（組）加強(qiáng)措施A2.5m弧形2400拱頂中心9648088780鋼筋網(wǎng)片加強(qiáng)（隧參07）C2.5m直形32224（下）

2400（上）邊墻129012結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）2.5m弧形2600拱腰126012D1.5m弧形2600拱腰6184結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）G2.5m弧形2600拱頂中心15/鋼筋網(wǎng)片加強(qiáng)（隧參07）E2.5m弧形2600拱腰///結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）F1.5m弧形2400拱頂偏±625mm7823467鋼筋網(wǎng)片加強(qiáng)（隧參07）洞室洞室類型洞室數(shù)量（個(gè)）接地端子（個(gè)）接地端子類型信號(hào)過(guò)軌（根）規(guī)格無(wú)線通信過(guò)軌（根）規(guī)格電力過(guò)軌（根）規(guī)格綜合洞室816L型16Φ10016Φ10032Φ150變壓器洞室//L型/Φ100/Φ100/Φ150洞口過(guò)軌/////2Φ1004Φ150水溝電纜槽接地端子部位端子類型數(shù)量（個(gè)）備注通信信信號(hào)電纜槽側(cè)壁L型78及接地端子供軌旁設(shè)備、設(shè)施接地通信信信號(hào)電纜槽溝底直形40隧道接地裝置及貫通地線的連接棟梁坡隧道1#斜井四電接口施工主要工程量及說(shuō)明管段長(zhǎng)度：2113m起訖里程：DK500+965～DK503+078施工單位：中國(guó)交通建設(shè)股份有限公司滬昆客專貴州段工程指揮部第1項(xiàng)目部項(xiàng)目?jī)?nèi)容主要項(xiàng)目技術(shù)要求及說(shuō)明預(yù)埋槽道型號(hào)規(guī)格每組數(shù)量（根）槽道組間距（mm）相對(duì)隧道中線位置數(shù)量（組）合計(jì)長(zhǎng)度（m）總計(jì)長(zhǎng)度（m）Ⅳa、Ⅲ級(jí)圍巖地段預(yù)埋數(shù)量及加強(qiáng)措施數(shù)量（組）加強(qiáng)措施A2.5m弧形2400拱頂中心104520101385鋼筋網(wǎng)片加強(qiáng)（隧參07）C2.5m直形32224（下）

2400（上）邊墻161204結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）2.5m弧形2600拱腰16804D1.5m弧形2600拱腰8248結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）G2.5m弧形2600拱頂中心2102鋼筋網(wǎng)片加強(qiáng)（隧參07）E2.5m弧形2600拱腰///結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）F1.5m弧形2400拱頂偏±625mm8826472鋼筋網(wǎng)片加強(qiáng)（隧參07）洞室洞室類型洞室數(shù)量（個(gè)）接地端子（個(gè)）接地端子類型信號(hào)過(guò)軌（根）規(guī)格無(wú)線通信過(guò)軌（根）規(guī)格電力過(guò)軌（根）規(guī)格綜合洞室816L型16Φ10016Φ10032Φ150變壓器洞室12L型2Φ1002Φ1006Φ150洞口過(guò)軌//////Φ100/Φ150水溝電纜槽接地端子部位端子類型數(shù)量（個(gè)）備注通信信信號(hào)電纜槽側(cè)壁L型84及接地端子供軌旁設(shè)備、設(shè)施接地通信信信號(hào)電纜槽溝底直形42隧道接地裝置及貫通地線的連接棟梁坡隧道2#斜井四電接口施工主要工程量及說(shuō)明管段長(zhǎng)度：3252m起訖里程：DK503+078～DK506+330施工單位：中國(guó)交通建設(shè)股份有限公司滬昆客專貴州段工程指揮部第1項(xiàng)目部項(xiàng)目?jī)?nèi)容主要項(xiàng)目技術(shù)要求及說(shuō)明預(yù)埋槽道型號(hào)規(guī)格每組數(shù)量（根）槽道組間距（mm）相對(duì)隧道中線位置數(shù)量（組）合計(jì)長(zhǎng)度（m）總計(jì)長(zhǎng)度（m）Ⅳa、Ⅲ級(jí)圍巖地段預(yù)埋數(shù)量及加強(qiáng)措施數(shù)量（組）加強(qiáng)措施A2.5m弧形2400拱頂中心1587901536144鋼筋網(wǎng)片加強(qiáng)（隧參07）C2.5m直形32224（下）

2400（上）邊墻2418020結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）2.5m弧形2600拱腰2412020D1.5m弧形2600拱腰123612結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）G2.5m弧形2600拱頂中心151鋼筋網(wǎng)片加強(qiáng)（隧參07）E2.5m弧形2600拱腰///結(jié)構(gòu)鋼筋加強(qiáng)（隧參01）F1.5m弧形2400拱頂偏±625mm135405125鋼筋網(wǎng)片加強(qiáng)（隧參07）洞室洞室類型洞室數(shù)量（個(gè)）接地端子（個(gè)）接地端子類型信號(hào)過(guò)軌（根）規(guī)格無(wú)線通信過(guò)軌（根）規(guī)格電力過(guò)軌（根）規(guī)格綜合洞室1326L型26Φ10026Φ10052Φ150變壓器洞室12L型2Φ1002Φ1006Φ150洞口過(guò)軌//////Φ100/Φ150水溝電纜槽接地端子部位端子類型數(shù)量（個(gè)）備注通信信信號(hào)電纜槽側(cè)壁L型130及接地端子供軌旁設(shè)備、設(shè)施接地通信信信號(hào)電纜槽溝底直形64隧道接地裝置及貫通地線的連接3、綜合洞室、變壓器洞室及過(guò)軌管線3.1綜合洞室、變壓器洞室3.1.1綜合洞室、變壓器洞室布置位置及數(shù)量棟梁坡隧道綜合洞室、變壓器洞室布置表洞室里程位置類型過(guò)軌管線布置位置數(shù)量分布備注Ф100mm通信管Ф150mm電力管距進(jìn)口洞口2米2根4根DK499+202左側(cè)綜合洞室DK499+20244452右側(cè)綜合洞室45244702左側(cè)70244952右側(cè)綜合洞室95244DK500+202左側(cè)綜合洞室DK500+20244452右側(cè)綜合洞室45244702左側(cè)綜合洞室70244952右側(cè)綜合洞室95244DK501+202左側(cè)綜合洞室DK501+20244452右側(cè)綜合洞室45244702左側(cè)綜合洞室70244952右側(cè)綜合洞室95244DK502+054左側(cè)變壓器洞室DK502+05446DK502+202左側(cè)綜合洞室DK502+20244452右側(cè)綜合洞室45244702左側(cè)綜合洞室70244952右側(cè)綜合洞室95244DK503+202左側(cè)綜合洞室DK503+20244452右側(cè)綜合洞室45244702左側(cè)綜合洞室70244952右側(cè)綜合洞室95244DK504+202左側(cè)綜合洞室DK504+20244452右側(cè)綜合洞室45244702左側(cè)綜合洞室70244952右側(cè)綜合洞室95244DK505+054右側(cè)變壓器洞室DK505+05446DK505+202左側(cè)綜合洞室DK505+20244452右側(cè)綜合洞室45244702左側(cè)綜合洞室70244952右側(cè)綜合洞室95244DK506+202左側(cè)綜合洞室DK506+20244452右側(cè)綜合洞室45244702左側(cè)綜合洞室70244952右側(cè)綜合洞室95244DK507+202左側(cè)綜合洞室DK507+20244452右側(cè)綜合洞室45244702左側(cè)綜合洞室70244952右側(cè)綜合洞室95244DK508+202左側(cè)綜合洞室DK508+20244DK508+300左側(cè)變壓器洞室DK508+30046距出口洞口2米243.1.2綜合洞室過(guò)軌管施工綜合洞室過(guò)軌管線主要有電力、信號(hào)、無(wú)信通信專業(yè)。(1)電力專業(yè)：在綜合洞室附近設(shè)置一組過(guò)軌管，為4根Φ150mm的鋼管，過(guò)軌管引入兩側(cè)電力電纜槽（水溝電纜槽靠隧道邊墻側(cè)）、及電力電纜槽交角成45度，過(guò)軌管線均設(shè)置于中心水溝下方，鋼管的彎曲半徑均不小于1m，過(guò)軌管采用材質(zhì)、規(guī)格應(yīng)滿足于相關(guān)站前主體工程同設(shè)計(jì)壽命的要求，在壽命期不腐、不碎。(2)信號(hào)專業(yè)：在綜合洞室附近設(shè)置一組過(guò)軌管，為2根Φ100mm過(guò)軌管，過(guò)軌管引入通信信號(hào)電纜槽，過(guò)軌管采用材質(zhì)、規(guī)格應(yīng)滿足于相關(guān)站前主體工程同設(shè)計(jì)壽命的要求，在壽命期不腐、不碎。(3)無(wú)線通信專業(yè)：在綜合洞室附近設(shè)置一組過(guò)軌管，為2根Φ100mm過(guò)軌管，過(guò)軌管引入通信信號(hào)電纜槽，過(guò)軌管采用材質(zhì)、規(guī)格應(yīng)滿足于相關(guān)站前主體工程同設(shè)計(jì)壽命的要求，在壽命期不腐、不碎。各過(guò)軌管線管口均要求打磨光滑以保護(hù)電纜，管線連接處焊接質(zhì)量、彎管半徑要滿足設(shè)計(jì)要求，并在電纜槽底露頭1cm，每根過(guò)軌管內(nèi)經(jīng)穿Φ4.0mm鐵絲2根，兩端用麻油布、土工布封堵或者冷封膠封堵，以防滲水。3.1.3變壓器洞室過(guò)軌管線變壓器洞室過(guò)軌管線主要有電力、信號(hào)、無(wú)信通信專業(yè)。(1)電力專業(yè)：在變壓器洞室附近設(shè)置一組過(guò)軌管，為6根Φ150mm的鋼管，過(guò)軌管引入兩側(cè)電力電纜槽、及電力電纜槽交角成45度，過(guò)軌管線均設(shè)置于中心水溝下方，鋼管的彎曲半徑均不小于1m，過(guò)軌管采用材質(zhì)、規(guī)格應(yīng)滿足于相關(guān)站前主體工程同設(shè)計(jì)壽命的要求，在壽命期不腐、不碎。(2)信號(hào)專業(yè)：在變壓器洞室附近設(shè)置一組過(guò)軌管，為2根Φ100mm過(guò)軌管，過(guò)軌管引入兩側(cè)通信信號(hào)電纜槽，過(guò)軌管采用材質(zhì)、規(guī)格應(yīng)滿足于相關(guān)站前主體工程同設(shè)計(jì)壽命的要求，在壽命期不腐、不碎。(3)無(wú)線通信專業(yè)：在變壓器洞室附近設(shè)置一組過(guò)軌管，為2根Φ100mm過(guò)軌管，過(guò)軌管引入通信信號(hào)電纜槽，過(guò)軌管采用材質(zhì)、規(guī)格應(yīng)滿足于相關(guān)站前主體工程同設(shè)計(jì)壽命的要求，在壽命期不腐、不碎。各過(guò)軌管線管口均要求打磨光滑以保護(hù)電纜，管線連接處焊接質(zhì)量、彎管半徑要滿足設(shè)計(jì)要求，并在電纜槽底露頭1cm，每根過(guò)軌管內(nèi)經(jīng)穿Φ4.0mm鐵絲2根，兩端用麻油布、土工布封堵或者冷封膠封堵，以防滲水。3.1.4綜合洞室、變壓器洞室接地及接地端子洞室接地端子采用橋隧型接地端子，在每個(gè)洞室兩側(cè)壁下部設(shè)置接地端子，供洞室內(nèi)設(shè)備、設(shè)施接地。所有的接地端子均通過(guò)連接鋼筋及電纜槽外緣的縱向接地鋼筋連接。接地鋼筋間的聯(lián)接均應(yīng)保證焊接質(zhì)量。綜合洞室、變壓器洞室接地端子布置表序號(hào)洞室里程位置端子數(shù)量(個(gè))L型類型接地端子位置1DK499+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)2452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)3702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)4952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)5DK500+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)6452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)7702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)8952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)9DK501+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)10452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)11702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)12952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)13DK502+054左側(cè)2變壓器洞室兩側(cè)邊墻各1個(gè)14DK502+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)15452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)16702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)17952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)18DK503+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)19452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)20702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)21952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)22DK504+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)23452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)24702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)25952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)26DK505+054右側(cè)2變壓器洞室兩側(cè)邊墻各1個(gè)27DK505+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)28452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)29702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)30952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)31DK506+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)32452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)33702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)34952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)35DK507+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)36452右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)37702左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)38952右側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)39DK508+202左側(cè)2綜合洞室兩側(cè)邊墻各1個(gè)40DK508+300左側(cè)2變壓器洞室兩側(cè)邊墻各1個(gè)（1）綜合洞室接地端子布置圖見(jiàn)下圖：綜合洞室平面圖綜合洞室平面圖綜合洞室剖面圖綜合洞室剖面圖

（2）變壓器洞室接地端子布置圖見(jiàn)下圖：變壓器洞室平面圖變壓器洞室平面圖變壓器洞室剖面圖變壓器洞室剖面圖3.2進(jìn)出口過(guò)軌管線隧道洞口過(guò)軌管線主要有電力、無(wú)信通信專業(yè)。①電力專業(yè)：在洞口附近設(shè)置一組過(guò)軌管，為4根Φ150mm的鋼管，過(guò)軌管引入兩側(cè)電力電纜槽、及電力電纜槽交角成45度，過(guò)軌管線均設(shè)置于中心水溝下方，鋼管的彎曲半徑均不小于1m，過(guò)軌管采用材質(zhì)、規(guī)格應(yīng)滿足于相關(guān)站前主體工程同設(shè)計(jì)壽命的要求，在壽命期不腐、不碎。②無(wú)線通信專業(yè)：在洞口附近設(shè)置一組過(guò)軌管，為2根Φ100mm過(guò)軌管，過(guò)軌管引入兩側(cè)通信信號(hào)電纜槽，過(guò)軌管采用材質(zhì)、規(guī)格應(yīng)滿足于相關(guān)站前主體工程同設(shè)計(jì)壽命的要求，在壽命期不腐、不碎。各過(guò)軌管線管口均要求打磨光滑以保護(hù)電纜，管線連接處焊接質(zhì)量、彎管半徑要滿足設(shè)計(jì)要求，并在電纜槽底露頭1cm，每根過(guò)軌管內(nèi)經(jīng)穿Φ4.0mm鐵絲2根，兩端用麻油布、土工布封堵或者冷封膠封堵，以防滲水。過(guò)軌管線布設(shè)里程及工程數(shù)量表洞室里程位置類型過(guò)軌管線布置位置數(shù)量分布Ф100mm通信管Ф100mm信號(hào)管Ф150mm電力管距進(jìn)口洞口2米2根04根DK499+202左側(cè)綜合洞室DK499+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK500+202左側(cè)綜合洞室DK500+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK501+202左側(cè)綜合洞室DK501+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK502+054左側(cè)變壓器洞室DK502+054226DK502+202左側(cè)綜合洞室DK502+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK503+202左側(cè)綜合洞室DK503+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK504+202左側(cè)綜合洞室DK504+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK505+054右側(cè)變壓器洞室DK505+054226DK505+202左側(cè)綜合洞室DK505+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK506+202左側(cè)綜合洞室DK506+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK507+202左側(cè)綜合洞室DK507+202224452右側(cè)綜合洞室452224702左側(cè)綜合洞室702224952右側(cè)綜合洞室952224DK508+202左側(cè)綜合洞室DK508+202224DK508+300左側(cè)變壓器洞室DK508+300226距出口洞口2米24洞口過(guò)軌過(guò)軌管線平面布置圖洞口過(guò)軌過(guò)軌管線平面布置圖4、隧道綜合接地4.1初期支護(hù)接地（1）IV、V級(jí)以上圍巖隧道，利用錨桿、鋼拱架（或鋼網(wǎng)片）做為接地極。（2）III級(jí)圍巖隧道，利用錨桿和專用環(huán)向接地鋼筋做為接地極。（3）錨桿接地極以約一個(gè)臺(tái)車長(zhǎng)度為間隔設(shè)置，用作接地極的錨桿環(huán)向間距要求為2倍錨桿長(zhǎng)度；接地錨桿及鋼網(wǎng)片、鋼拱架或?qū)Ｓ铆h(huán)向接地鋼筋可靠焊接。（4）每個(gè)臺(tái)車位的隧道接地極均通過(guò)連接鋼筋及兩側(cè)電纜槽外緣的縱向接地鋼筋連接。（5）接地鋼筋應(yīng)優(yōu)先利用結(jié)構(gòu)物中的非預(yù)應(yīng)力結(jié)構(gòu)鋼筋，原則上不再增加專用的接地鋼筋。兼有接地功能（含連接）的結(jié)構(gòu)鋼筋和專用接地鋼筋截面應(yīng)滿足接觸網(wǎng)最大短路電流要求。施工時(shí)應(yīng)對(duì)接地鋼筋作出標(biāo)識(shí)，便于檢查。（6）所有接地鋼筋間的聯(lián)接均應(yīng)保證焊接質(zhì)量，焊接要求詳見(jiàn)焊接示意圖。圖示為接地鋼筋電氣連接示意，各工點(diǎn)施作時(shí)應(yīng)根據(jù)具體的鋼筋配筋，采用搭接焊或L型焊接。4.2二次襯砌綜合接地二次襯砌中有結(jié)構(gòu)鋼筋的隧道接地設(shè)置：（1）利用二次襯砌的內(nèi)層縱、環(huán)向結(jié)構(gòu)鋼筋作為接觸網(wǎng)斷線保護(hù)接地鋼筋。（2）接觸網(wǎng)線垂直向上在拱頂?shù)耐队熬€兩側(cè)以0.5m為間隔，各選3根縱向結(jié)構(gòu)鋼筋作為接地鋼筋;上述投影線兩側(cè)各1.5m外的其他位置，以1m為間隔，選擇縱向結(jié)構(gòu)鋼筋作為接地鋼筋，在每個(gè)臺(tái)車位（作業(yè)段）中部選一根環(huán)向結(jié)構(gòu)鋼筋作為環(huán)向接地鋼筋，環(huán)、縱向接地鋼筋間可靠焊接；縱向接地鋼筋在作業(yè)段間可不連接。（3）每個(gè)作業(yè)段內(nèi)的環(huán)向接地鋼筋及兩側(cè)通信信號(hào)電纜槽靠線路側(cè)外緣的縱向接地鋼筋連接。（4）二次襯砌中無(wú)結(jié)構(gòu)鋼筋的隧道，除接觸網(wǎng)基礎(chǔ)接地外，不再單獨(dú)考慮接地鋼筋設(shè)置。（5）接地鋼筋應(yīng)優(yōu)先利用結(jié)構(gòu)物中的非預(yù)應(yīng)力結(jié)構(gòu)鋼筋，原則上不再增加專用的接地鋼筋。接地鋼筋截面應(yīng)滿足接觸網(wǎng)最大短路電流要求。施工時(shí)應(yīng)對(duì)接地鋼筋作出標(biāo)識(shí)，便于檢查。4.3明洞仰拱綜合接地明洞地段，利用隧道仰拱襯砌下層的結(jié)構(gòu)鋼筋做為接地極，并從兩側(cè)引出。接地鋼筋等接地裝置均應(yīng)通過(guò)連接鋼筋及兩側(cè)電纜槽靠線路側(cè)外緣的縱向接地鋼筋連接。4.4綜合接地鋼筋布設(shè)位置棟梁坡隧道接地鋼筋分布里程表序號(hào)接地鋼筋里程襯砌類型序號(hào)接地鋼筋里程襯砌類型1DK499+061.0明洞389DK503+708.0IIIa2DK499+068.5390DK503+720.03DK499+076.0Vc391DK503+732.04DK499+088.0392DK503+744.05DK499+100.0393DK503+756.06DK499+112.0Vb394DK503+768.07DK499+124.0395DK503+780.08DK499+136.0396DK503+792.09DK499+148.0397DK503+804.010DK499+160.0398DK503+816.011DK499+172.0399DK503+828.0IVa12DK499+184.0400DK503+840.013DK499+196.0401DK503+852.014DK499+208.0Va402DK503+864.015DK499+220.0403DK503+876.016DK499+232.0Iva404DK503+888.017DK499+244.0405DK503+900.018DK499+256.0406DK503+912.019DK499+268.0407DK503+924.020DK499+280.0408DK503+936.0IIIa21DK499+292.0409DK503+948.022DK499+304.0410DK503+960.023DK499+316.0411DK503+972.024DK499+328.0412DK503+984.025DK499+340.0IIIa413DK503+996.026DK499+352.0414DK504+008.027DK499+364.0415DK504+020.028DK499+376.0416DK504+032.029DK499+388.0417DK504+044.030DK499+400.0418DK504+056.031DK499+412.0419DK504+068.032DK499+424.0420DK504+080.033DK499+436.0421DK504+092.034DK499+448.0422DK504+104.035DK499+460.0423DK504+116.036DK499+472.0424DK504+128.037DK499+484.0425DK504+140.038DK499+496.0426DK504+152.039DK499+508.0427DK504+164.040DK499+520.0428DK504+176.041DK499+532.0429DK504+188.042DK499+544.0430DK504+200.043DK499+556.0431DK504+212.044DK499+568.0432DK504+224.045DK499+580.0433DK504+236.046DK499+592.0434DK504+248.047DK499+604.0435DK504+260.048DK499+616.0436DK504+272.049DK499+628.0437DK504+284.050DK499+640.0438DK504+296.051DK499+652.0439DK504+308.052DK499+664.0440DK504+320.053DK499+676.0441DK504+332.054DK499+688.0442DK504+344.055DK499+700.0443DK504+356.056DK499+712.0IVa444DK504+368.057DK499+724.0445DK504+380.058DK499+736.0446DK504+392.059DK499+748.0447DK504+404.060DK499+760.0IIIa448DK504+416.061DK499+772.0449DK504+428.062DK499+784.0450DK504+440.063DK499+796.0451DK504+452.064DK499+808.0452DK504+464.0IVa65DK499+820.0453DK504+476.066DK499+832.0454DK504+488.067DK499+844.0455DK504+500.068DK499+856.0456DK504+512.069DK499+868.0457DK504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（mm）相對(duì)隧道中線位置縱向距施工縫距離（mm）1A2.5m弧形2400拱頂中心10002C2.5m直形32224、2400邊墻6002.5m弧形2600拱腰10003D1.5m弧形2600拱腰10004G2.5m弧形2600拱頂中心10005E2.5m弧形2600拱腰10006F1.5m弧形2400拱頂偏±625mm1000槽道施工誤差控制指標(biāo)表序號(hào)項(xiàng)目誤差控制要求1嵌入施工誤差≤5mm2傾斜施工誤差≤3mm3平行施工誤差≤±5mm4及水平方向和垂直方向施工誤差≤±5mm/m5兩槽道傾斜施工誤差≤±12mm，軸線距離槽道組1m投影位置處6槽道組間距誤差L≤1.9m，≤±10mmL≥1.9m，≤±40mm7橫向允許誤差≤±30mm8縱向跨距允許誤差≤±500mm5.3施工工藝流程槽道定位前準(zhǔn)備→二襯防排水系統(tǒng)施工→槽道型號(hào)選定組裝、二襯鋼筋綁扎→隧道及臺(tái)車中心線相對(duì)位置確定→模板臺(tái)車移至未綁扎鋼筋及襯砌段→槽道在模板臺(tái)車上的初步定位→模板臺(tái)車行走至設(shè)計(jì)里程并精確定位→槽道接地連接→止水帶、臺(tái)車擋頭模板安裝→砼澆注→卸除T型螺栓→脫?！鄣牢恢谜`差的檢測(cè)記錄和中線標(biāo)示→二襯砼養(yǎng)護(hù)。二襯防排水系統(tǒng)施工二襯防排水系統(tǒng)施工槽道型號(hào)選定組裝、二襯鋼筋（加強(qiáng)鋼筋）綁扎隧道與臺(tái)車中心線相對(duì)位置確定模板臺(tái)車移至未綁扎鋼筋及襯砌段槽道在模板臺(tái)車上的初步定位模板臺(tái)車行走至設(shè)計(jì)里程并精確定位止水帶、臺(tái)車擋頭模板安裝槽道接地連接二襯砼澆注卸除T型螺栓脫模、槽道位置誤差的檢測(cè)記錄和中線標(biāo)示、二次砼養(yǎng)護(hù)施工工藝流程圖槽道定位前準(zhǔn)備5.4施工方法5.4.1施工前檢查槽道內(nèi)發(fā)泡填充物的完整狀態(tài)，如有殘缺，應(yīng)進(jìn)行填充。5.4.2將槽道擺放在標(biāo)好的鋼板上進(jìn)行初步固定，檢查槽道之間的距離，焊接槽道間的連接鋼筋并加焊槽道定位斜筋，焊接成槽道組，要求槽道間距平行，避免八字型和上下錯(cuò)位，避免在澆注砼時(shí)槽道發(fā)生移位；槽道組根據(jù)設(shè)計(jì)間距用扁鋼接牢固。（1）槽道組是確保槽道尺寸精度的關(guān)鍵，當(dāng)槽道長(zhǎng)度小于2m時(shí)用3條扁鋼，大于2m時(shí)用4條扁鋼，扁鋼間距均布。（2）扁鋼焊接要求應(yīng)點(diǎn)焊在槽道的兩側(cè)壁上，焊接牢固謹(jǐn)防變形。槽道組組裝模擬圖槽道組組裝模擬圖當(dāng)槽道長(zhǎng)度小于2m時(shí)用3條扁鋼，大于2m時(shí)用4條扁鋼扁鋼間距均勻布設(shè)（3）在隧道襯砌上預(yù)埋接觸網(wǎng)槽道組時(shí),槽道固定在模板上,其隧道定位務(wù)必按接觸網(wǎng)平面圖里程準(zhǔn)確定位,模板臺(tái)車上開(kāi)螺栓孔應(yīng)及槽道組位置匹配。（4）依據(jù)臺(tái)車模板上槽道的設(shè)計(jì)要求位置，測(cè)量放樣，在模板臺(tái)車的相應(yīng)位置準(zhǔn)確劃出定位線，依據(jù)槽道類型在臺(tái)車上開(kāi)設(shè)定位孔，定位孔在槽道兩端、中間各一處。（5）定位孔開(kāi)孔原則：應(yīng)結(jié)合所有槽道預(yù)留臺(tái)車模板布置圖進(jìn)行統(tǒng)籌優(yōu)化，減少模板開(kāi)孔數(shù)量，開(kāi)孔方向按圖施工；應(yīng)避開(kāi)臺(tái)車模板的加固支撐、頂升固定點(diǎn)及各種連接結(jié)構(gòu)；應(yīng)嚴(yán)格按圖控制槽道距臺(tái)車邊緣的距離。5.4.3槽道一次定位（1）在二襯鋼筋綁扎至靠近臺(tái)車側(cè)后,按照設(shè)計(jì)位置進(jìn)行放樣,測(cè)量出槽道的里程中心位置及垂直方向后將焊接固定好的槽道組用定位鋼筋臨時(shí)焊接固定在鋼筋網(wǎng)上就位。（2）在槽道后部錨桿處,垂直槽道方向間隔焊接帶彎鉤的幾根短鋼筋,長(zhǎng)度約30cm,見(jiàn)下圖所示，彎鉤及槽道方向一致,將錨桿加固在鋼筋網(wǎng)上。在臺(tái)車就位前,利用臺(tái)車模板開(kāi)設(shè)的定位孔,把槽道安裝到位,并檢查其各種誤差是否超標(biāo),合格后進(jìn)行下道工序。（3）根據(jù)接地要求,將槽道和環(huán)向接地鋼筋進(jìn)行可靠焊接，槽道及防閃絡(luò)接地鋼筋焊接。（4）將槽道及模板固定點(diǎn)位置（開(kāi)孔位置）的發(fā)泡填充物扣除。槽道接地焊接圖槽道接地焊接圖槽道與防閃絡(luò)接地鋼筋焊接5.5Ⅳa、Ⅲ級(jí)圍巖地段預(yù)埋加固措施5.5.1A、F、G型槽道加固措施在Ⅳa、Ⅲ級(jí)硬質(zhì)巖二襯為纖維混凝土地段接觸網(wǎng)基礎(chǔ)槽道為A型、F型、G型段落時(shí)采用Φ14鋼筋網(wǎng)片加強(qiáng)，鋼筋網(wǎng)片置于槽道背后，環(huán)向鋼筋于槽道錨桿接觸并可靠焊接，施工時(shí)通過(guò)模板臺(tái)車定位槽道和定位鋼筋網(wǎng)，如下圖。5.5.2C、D、E型槽道加固措施Ⅲ級(jí)及Ⅳa襯砌地段接觸網(wǎng)基礎(chǔ)槽道為C型、D型、E型段落襯砌的加強(qiáng)，加強(qiáng)范圍為縱向長(zhǎng)度3m,拱墻配筋見(jiàn)下圖：5.6槽道二次定位5.6.1臺(tái)車移動(dòng)就位至指定位置后,臺(tái)車油缸頂升拱頂,拱腰模板到到位,及鋼筋網(wǎng)片上固定槽道接近貼住后通過(guò)二次定位孔,找到槽道并調(diào)整臺(tái)車位置將孔位及槽道相應(yīng)位置對(duì)準(zhǔn),再次檢查,復(fù)核槽道位置,防止預(yù)升過(guò)程中槽道移動(dòng)。5.6.2將T型螺栓穿過(guò)鋼模板的二次定位長(zhǎng)孔,放入已經(jīng)剔除泡沫填充物的槽道位置,水平旋轉(zhuǎn)90度，將螺母擰緊,使槽道緊貼臺(tái)車背面,達(dá)到模板上精確二次定位的目的,同時(shí)避免砼覆蓋槽道；由技術(shù)人員對(duì)槽道的安裝質(zhì)量進(jìn)行檢查驗(yàn)收是否合格,并填寫檢查記錄后報(bào)現(xiàn)場(chǎng)監(jiān)理驗(yàn)收。5.6.3襯砌臺(tái)車移動(dòng)就位,根據(jù)接地設(shè)計(jì)要求,將槽道錨桿及相應(yīng)接地鋼筋進(jìn)行可靠焊接,并通過(guò)螺栓位置再次檢查槽道位置是否正確。5.6.4對(duì)臺(tái)車上所開(kāi)的二次定位孔進(jìn)行有效封堵，封堵鋼板可用柳丁及臺(tái)車模板固定，確保局部不會(huì)出現(xiàn)漏漿，脫模后造成外觀缺陷。5.7混凝土澆注和脫模后槽道檢查、保護(hù)臺(tái)車模板封堵完后，進(jìn)行二次襯砌澆注，砼脫模前將T型螺栓松開(kāi),脫模后T型螺栓螺母松開(kāi)，打開(kāi)封堵，將T型螺栓反方向旋轉(zhuǎn)90°，取出螺栓，將槽道表面的少量水泥漿剔除，將槽道固定處重新填補(bǔ)發(fā)泡填充物,做好后續(xù)養(yǎng)護(hù)工作。襯砌臺(tái)車移走后，利用全站儀對(duì)預(yù)埋槽道的位置再次進(jìn)行測(cè)量，并用白油漆畫出隧道中心、線路中線，標(biāo)注槽道中心里程,及時(shí)檢測(cè)槽道貫通性電阻值、槽道間距誤差、平行誤差和嵌入誤差，檢查槽道的兩端距線路中線的左右距離是否相等、兩槽道之間的縱、橫向間距是否滿足設(shè)計(jì)要求，以利于后期制定更加合理的措施來(lái)克服施工偏差。棟梁坡隧道接觸網(wǎng)槽道統(tǒng)計(jì)表襯砌類型里程及隧道線路關(guān)系槽道類型斜切洞門DK499+068.2中間G2DK499+068.2左、右D2ⅤcDK499+083.2中間A2DK499+090.8中間A1ⅤbDK499+107.2左F2DK499+119.2右F4DK499+131.2中間A2DK499+140.8中間A1DK499+155.2左F2DK499+167.2右F4DK499+179.2中間A2DK499+188.8中間A1ⅤaDK499+203.2左F2DK499+215.2右F4DK499+227.2中間A2ⅣaDK499+236.8中間A1DK499+251.2左F2DK499+263.2右F4DK499+275.2右C4DK499+275.2中間、左A2\C2DK499+284.8中間、左A1\C1DK499+287.2右C4DK499+299.2左F2DK499+311.2右F4DK499+320.8中間A1DK499+323.2中間A2DK499+332.8中間A1ⅢaDK499+335.2中間A2DK499+347.2左F2DK499+359.2右F4DK499+368.8中間A1DK499+371.2中間A2DK499+380.8中間A1DK499+383.2中間A2DK499+395.2左F2DK499+407.2右F4DK499+416.8中間A1DK499+419.2中間A2DK499+428.8中間A1DK499+431.2中間A2DK499+443.2左F2DK499+455.2右F4DK499+464.8中間A1DK499+467.2中間A2DK499+476.8中間A1DK499+479.2中間A2DK499+491.2左F2DK499+503.2右F4DK499+512.8左C1DK499+515.2中間、左A2\C2DK499+524.8中間、左A1\C1DK499+524.8右C3DK499+539.2左F2DK499+551.2右F4DK499+563.2中間A2DK499+572.8中間A1DK499+587.2左F2DK499+599.2右F4DK499+611.2中間A2DK499+620.8中間A1DK499+635.2左F2DK499+647.2右F4DK499+659.2中間A2DK499+668.8中間A1DK499+683.2左F2DK499+695.2右F4ⅣaDK499+707.2中間A2DK499+716.8中間A1DK499+731.2左F2DK499+743.2右F4ⅢaDK499+755.2中間A2DK499+764.8中間A1DK499+779.2左F2DK499+791.2右F4DK499+803.2中間A2DK499+812.8中間A1DK499+827.2左F2DK499+839.2右F4DK499+851.2中間A2DK499+860.8中間A1DK499+875.2左F2DK499+887.2右F4DK499+899.2中間A2DK499+908.8中間A1DK499+911.2左、右D2DK499+923.2左F2ⅣaDK499+935.2右F4DK499+947.2中間A2DK499+956.8中間A1DK499+971.2左F2DK499+983.2右F4DK499+992.8左、右D1DK499+995.2中間A2DK500+004.8中間A1DK500+019.2左F2DK500+031.2右F4DK500+043.2中間A2DK500+052.8中間A1DK500+067.2左F2DK500+079.2右F4DK500+091.2中間A2DK500+100.8中間A1DK500+115.2左F2DK500+127.2右F4ⅢaDK500+139.2中間A2DK500+148.8中間A1DK500+163.2左F2DK500+175.2右F4DK500+187.2中間A2DK500+196.8中間A1DK500+211.2左F2DK500+223.2右F4DK500+235.2中間A2DK500+244.8中間A1DK500+259.2左F2DK500+271.2右F4DK500+283.2中間A2DK500+292.8中間A1DK500+307.2左F2DK500+319.2右F4ⅣaDK500+331.2中間A2DK500+340.8中間A1DK500+355.2左F2DK500+367.2右F4DK500+379.2中間、左、右A2\C2\C4DK500+388.8中間A1DK500+388.8左C1DK500+391.2右C4DK500+403.2左F2DK500+415.2右F4DK500+424.8中間A1DK500+427.2中間A2DK500+436.8中間A1ⅤcDK500+439.2中間A2DK500+451.2左F2DK500+463.2右F4DK500+472.8中間A1DK500+475.2中間A2DK500+484.8中間A1DK500+487.2中間A2DK500+499.2左F2DK500+511.2右F4DK500+520.8中間A1DK500+523.2中間A2DK500+532.8中間A1DK500+535.2中間A2DK500+547.2左F2ⅣaDK500+559.2右F4DK500+568.8中間A1DK500+571.2中間A2DK500+580.8中間A1DK500+583.2中間A2DK500+595.2左F2DK500+607.2右F4DK500+616.8左、右C1\C3DK500+619.2中間A2DK500+628.8中間、左、右A1\C1\C3DK500+643.2左F2DK500+655.2右F4DK500+667.2中間A2DK500+676.8中間A1DK500+691.2左F2ⅢaDK500+703.2右F4DK500+715.2中間A2DK500+724.8中間A1DK500+739.2左F2DK500+751.2右F4DK500+763.2中間A2DK500+772.8中間A1DK500+787.2左F2DK500+799.2右F4DK500+811.2中間A2DK500+820.8中間A1DK500+835.2左F2DK500+847.2右F4DK500+859.2中間A2DK500+868.8中間A1DK500+883.2左F2DK500+895.2右F4DK500+907.2中間A2DK500+916.8中間A1DK500+931.2左F2DK500+943.2右F4DK500+955.2中間A2DK500+964.8中間A1DK500+979.2左F2DK500+991.2中間G2DK501+003.2中間A2DK501+012.8中間A1DK501+015.2左、右D2DK501+027.2左F2DK501+039.2右F4DK501+051.2中間A2DK501+060.8中間A1DK501+075.2左F2DK501+087.2右F4DK501+096.8左、右D1DK501+099.2中間A2DK501+108.8中間A1DK501+123.2左F2DK501+135.2右F4DK501+147.2中間A2DK501+156.8中間A1DK501+171.2左F2DK501+183.2右F4DK501+195.2中間A2DK501+204.8中間A1DK501+219.2左F2DK501+231.2右F4DK501+243.2中間A2DK501+252.8中間A1DK501+267.2左F2DK501+279.2右F4DK501+291.2中間A2DK501+300.8中間A1DK501+315.2左F2ⅣaDK501+327.2右F4DK501+339.2中間A2DK501+348.8中間A1DK501+363.2左F2DK501+375.2右F4DK501+387.2中間A2DK501+396.8中間A1DK501+411.2左F2DK501+423.2右F4DK501+435.2中間A2DK501+444.8中間A1DK501+459.2左F2DK501+471.2右F4DK501+483.2中間、左A2\C2DK501+483.2右C4DK501+492.8中間、左A1\C1DK501+495.2右C4DK501+507.2左F2ⅤaDK501+519.2右F4DK501+528.8中間A1DK501+531.2中間A2DK501+540.8中間A1DK501+543.2中間A2DK501+555.2左F2DK501+567.2右F4DK501+576.8中間A1DK501+579.2中間A2DK501+588.8中間A1DK501+591.2中間A2DK501+603.2左F2DK501+615.2右F4DK501+624.8中間A1DK501+627.2中間A2ⅤcDK501+636.8中間A1DK501+639.2中間A2DK501+651.2左F2DK501+663.2右F4DK501+672.8中間A1DK501+675.2中間A2DK501+684.8中間A1DK501+687.2中間A2DK501+699.