【正文】 深圳市城市軌道交通 9 號線 BT工程 向西村站 基坑支護(hù)與土方開挖 安全 專項(xiàng)施工方案 編制： 審核： 審批： 中建三局建設(shè)工程股份有限公司 深圳市城市軌道交通 9 號線 BT 項(xiàng)目 91041 標(biāo)段項(xiàng)目經(jīng)理部 2020 年 3 月 目錄 第一章 工程參建單位及編制說明 .......................................................................................... 1 工程參建單位 .............................................................................................................. 1 編制依據(jù) ...................................................................................................................... 1 編制原則 ...................................................................................................................... 2 章、節(jié)及圖、表編目說明 .......................................................................................... 2 第二章 工程概況 ...................................................................................................................... 3 工程簡介 ...................................................................................................................... 3 工程地質(zhì)與水文條件 .................................................................................................. 4 場地條件 ........................................................................................................... 4 巖土分層及特征 ............................................................................................... 4 補(bǔ)勘巖土地質(zhì)情況 ........................................................................................... 5 不良地質(zhì)及巖土 ............................................................................................... 6 水文地質(zhì)條件 ................................................................................................... 6 基坑周邊環(huán)境條件 ...................................................................................................... 8 周邊建（構(gòu)）筑物情況 ................................................................................... 8 周邊交通及地下管線 ....................................................................................... 9 施工圖技術(shù)要求 ........................................................................................................ 10 設(shè)計(jì)原則及設(shè)計(jì)標(biāo)準(zhǔn) ..................................................................................... 10 工程特點(diǎn)、施工重難點(diǎn)及對策 ............................................................................... 11 工程特點(diǎn) ......................................................................................................... 11 施工重點(diǎn)及對策 ............................................................................................. 11 施工難點(diǎn)及對策 ............................................................................................. 12 第三章 施工組織與部署 ........................................................................................................ 15 施工場地平面布置 ................................................................................................... 15 場地布置原則 ................................................................................................ 15 施工場地平面布置 ........................................................................................ 15 施工進(jìn)度安排 ............................................................................................................ 18 資源配置 .................................................................................................................... 20 勞動力配置 ..................................................................................................... 20 機(jī)械設(shè)備及儀器配置 ..................................................................................... 21 基坑開挖用電 ............................................................................................................ 23 施工用電設(shè)備 ................................................................................................. 23 基坑內(nèi)施工照明布置 ..................................................................................... 24 項(xiàng)目組織機(jī)構(gòu) ............................................................................................................ 24 第四章 施工方案 .................................................................................................................... 26 圍護(hù)結(jié)構(gòu)地下連續(xù)墻施工 ....................................................................................... 26 地下連續(xù)墻施工流程 ..................................................................................... 26 導(dǎo)墻施工 ......................................................................................................... 27 泥漿制備與循環(huán) ............................................................................................ 28 地連墻成槽 .................................................................................................... 29 地下連續(xù)墻接頭施工 ..................................................................................... 30 鋼筋籠制作 ..................................................................................................... 30 水下混凝土澆筑 ............................................................................................. 31 中立柱施工 ................................................................................................................ 31 中間柱及基樁設(shè)計(jì)參數(shù) ................................................................................. 31 樁位測量放樣 ................................................................................................. 32 鉆機(jī)成孔 ......................................................................................................... 32 鋼管柱的吊裝及固定 ..................................................................................... 33 樁間回填 砂石 ................................................................................................. 33 基坑降、排水 ...................................................................................