【正文】 .......................................................................................... 2 2 工程 概況 ................................................................................................................................ 2 盾構(gòu)區(qū)間工程概況 ....................................................................................................... 2 地面環(huán)境 ....................................................................................................................... 3 工程地質(zhì) ...................................................................................................................... 6 地質(zhì)條件 ............................................................................................................ 6 水文條件 ............................................................................................................ 7 風(fēng)險源概況 ................................................................................................................... 7 工程重點及難點 .......................................................................................................... 9 3 施工安排及施工準備 .......................................................................................................... 10 工期安排 ..................................................................................................................... 10 安全質(zhì)量目標 ............................................................................................................. 10 人員安排 ..................................................................................................................... 11 盾構(gòu)施工場地布置 ..................................................................................................... 12 4 盾構(gòu)施工 .............................................................................................................................. 14 盾構(gòu)機選型 ................................................................................................................ 14 盾構(gòu)機吊裝、組裝、調(diào)試 ......................................................................................... 18 盾構(gòu)機吊裝下井順序 ....................................................................................... 19 盾構(gòu)組裝步驟 ................................................................................................... 20 盾構(gòu)調(diào)試 ........................................................................................................... 21 盾構(gòu)解體 ........................................................................................................... 22 端頭加固施工 ............................................................................................................ 22 盾構(gòu)始發(fā)準備工作 .................................................................................................... 24 盾構(gòu)基座安裝 ................................................................................................... 25 反力架安裝 ....................................................................................................... 27 軌道鋪設(shè)及洞內(nèi)運輸 ...................................................................................... 30 負環(huán)管片拼裝 .................................................................................................. 32 洞門橡膠簾布安裝 ........................................................................................... 33 洞門鑿樁 .......................................................................................................... 34 盾構(gòu)始發(fā)施工 ............................................................................................................ 35 潛覆土加固 ...................................................................................................... 35 盾構(gòu)始發(fā) 112m 試掘進 ................................................................................... 37 盾構(gòu)正常掘進施工 .................................................................................................... 40 掘進過程中參數(shù)確定 ....................................................................................... 42 盾構(gòu)掘進過程控制 .......................................................................................... 48 盾構(gòu)機到達接收施工 ....................................................................................... 54 II 洞內(nèi)出碴、運輸及碴土外運 .................................................................................... 56 管片拼裝 ..................................................................................................................... 57 管片設(shè)計參數(shù) ................................................................................................... 57 管片地上運輸 ................................................................................................... 58 管片拼裝 ........................................................................................................... 58 5 盾構(gòu)過風(fēng)道施工 .................................................................................................................. 62 端頭加固 .................................................................................................................... 62 風(fēng)道洞門破除 ............................................................................................................. 62 貫通掘進 ..................................................................................................................... 64 到達掘進及盾構(gòu)接收 ...................................................................................... 64 接收機座安裝 .................................................................................................. 65 到達端洞門處理 .............................................................................................. 66 貫通掘進注意事項 .......................................................................................... 66 盾構(gòu)設(shè)備檢修 ............................................................................................................ 66 盾構(gòu)過風(fēng)道再次始發(fā)施工 ........................................................