【正文】 ...................................................................................................................... 18 降水目的 .................................................................................................................................... 18 降水方案設(shè)計原則 .................................................................................................................... 19 降水井深度計算 ........................................................................................................................ 19 基坑降水計算 ............................................................................................................................ 19 降水井井點布置 ........................................................................................................................ 20 .................................................................................................................................. 20 降水井施工 ................................................................................................................................ 20 降水施工保證措施 .................................................................................................................... 22 排水施工 .................................................................................................................................... 22 豎井及馬頭門施工 ................................................................................................................................. 22 豎井施工 .................................................................................................................................... 23 .............................................................................................................................. 24 豎井頂板及回填施工 ............................................................................................................... 25 滿堂碗扣支架布 置及搭設(shè) ................................................................................................. 25 ............................................................................................. 26 模板施工 .............................................................................................................................. 27 鋼筋安裝 .............................................................................................................................. 28 混凝土施工 .......................................................................................................................... 28 土方回填 .............................................................................................................................. 28 隧道標準段施工 ..................................................................................................................................... 28 洞身開挖 .................................................................................................................................... 29 隧道內(nèi)運輸組織 ........................................................................................................................ 29 東林二路、致力五路市政工程 【電力隧道（暗挖）工程施工方案】 3 超前支護 .................................................................................................................................... 30 初期支護 .................................................................................................................................... 30 初支背后注漿 ............................................................................................................................ 33 防水層施工 ................................................................................................................................ 33 二襯結(jié)構(gòu)施工 ............................................................................................................................ 34 5. 二襯襯背注漿 .......................................................................................................................... 36 風孔及人孔施工 ..................................................................................................................................... 37 電氣工程及其它工程 ............................................................................................................................. 37 ............................................................................................................................. 37 施工測量 ................................................................................................................................................. 37 測量方案 .................................................................................................................................... 37 施工控制測量 ............................................................................................................................ 38 測量技術(shù)保證措施 ................................................................................................................... 40 施工監(jiān)測 ................................................................................................................................................. 41 ................................................................................................................... 44 穿越三環(huán)路底及成綿底層樁基保護 措施 ........................................................................................... 44 軟基換填 ................................................................................................................................................. 44 明暗交接處施工 ..................................................................................................................................... 44 管線保護方案 ......................................................................................................................................... 45 ...........................................................