【正文】 1 XXXX 軌道一期工程 BT 項(xiàng)目 XXXX （ K12+ ~ K16+） 樁基施工方案 編制： 審核： 批準(zhǔn)： 中鐵電氣化局 XXXX 一期工程 TA03 標(biāo)項(xiàng)目經(jīng)理部 20xx 年 6 月 2 目 錄 一、編制依據(jù)及目的 ....................................................................................................... 1 編制依據(jù) ................................................................................................................... 1 編制目的 ................................................................................................................... 1 二、工程概況 .................................................................................................................. 1 自然條件 ................................................................................................................... 2 工程地質(zhì)情況 .................................................................................................. 2 水文條件 ......................................................................................................... 3 氣候條件 ......................................................................................................... 3 施工環(huán)境 ................................................................................................................... 3 三、施工方案 .................................................................................................................. 3 鉆孔樁施工 ................................................................................................................ 3 施工準(zhǔn)備 ......................................................................................................... 5 樁位放樣 ......................................................................................................... 5 泥漿制備 ......................................................................................................... 5 埋設(shè)護(hù)筒 ......................................................................................................... 6 鉆機(jī)成孔 ......................................................................................................... 6 成孔檢查 ......................................................................................................... 8 清孔 ................................................................................................................. 9 鋼筋籠骨架的 制作安裝 ................................................................................... 9 導(dǎo)管試壓及安裝 ............................................................................................ 12 二次清孔 ..................................................................................................... 12 灌注水下混凝土 .......................................................................................... 13 鑿除樁頭和樁基檢測 .............................................................................................. 14 . 1 鑿除樁頭 ....................................................................................................... 14 樁基檢測 ....................................................................................................... 14 鉆機(jī)工作原理及常見事故的預(yù)防、處理 .................................................................. 14 四 質(zhì)量控制標(biāo)準(zhǔn) .......................................................................................................... 15 五 鉆孔事故預(yù)防與處理 ............................................................................................... 17 ......................................................................................................................... 17 坍孔的原因 .................................................................................................... 17 3 坍孔的預(yù)防和處理 ......................................................................................... 17 斜孔 ............................................................................................................