【正文】 ............................ 6 地質(zhì)條件 ............................................................................................................ 6 水文條件 ............................................................................................................ 7 風(fēng)險(xiǎn)源概況 ................................................................................................................... 7 工 程重點(diǎn)及難點(diǎn) .......................................................................................................... 9 3 施工安排及施工準(zhǔn)備 .......................................................................................................... 10 工期安排 ..................................................................................................................... 10 安全質(zhì)量目標(biāo) ............................................................................................................. 10 人員安排 ..................................................................................................................... 11 盾構(gòu)施工場(chǎng)地布置 ..................................................................................................... 12 4 盾構(gòu)施工 .............................................................................................................................. 14 盾構(gòu)機(jī)選型 ................................................................................................................ 14 盾構(gòu)機(jī)吊裝、組裝、調(diào)試 ......................................................................................... 18 盾構(gòu)機(jī)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(zhǔn)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(yùn)輸 ...................................................................................... 30 負(fù)環(huán)管片拼裝 .................................................................................................. 32 洞門(mén)橡膠簾布安裝 ........................................................................................... 33 洞門(mén)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(jìn) ................................................................................... 37 盾構(gòu)正常掘進(jìn)施工 .................................................................................................... 40 掘進(jìn)過(guò)程中參數(shù)確定 ....................................................................................... 42 盾構(gòu)掘進(jìn)過(guò)程控制 .......................................................................................... 48 盾構(gòu)機(jī)到達(dá)接收施工 ....................................................................................... 54 III 洞內(nèi)出碴、運(yùn)輸及碴土外運(yùn) .................................................................................... 56 管片拼裝 ..................................................................................................................... 57 管片設(shè)計(jì)參數(shù) ................................................................................................... 57 管片地上運(yùn)輸 ................................................................................................... 58 管片拼裝 ........................................................................................................... 58 5 盾構(gòu)過(guò)風(fēng)道施工 .................................................................................................................. 62 端頭加固 .................................................................................................................... 62 風(fēng)道洞門(mén)破除 ............................................................................................................. 62 貫通掘進(jìn) ..................................................................................................................... 64 到達(dá)掘進(jìn)及盾構(gòu)接收 ...................................................................................... 64 接收機(jī)座安裝 .................................................................................................. 65 到達(dá)端洞門(mén)處理 .............................................................................................. 66 貫通掘進(jìn)注意事項(xiàng) .......................................................................................... 66 盾構(gòu)設(shè)備檢修 ............................................................................................................ 66 盾構(gòu)過(guò)風(fēng)道再次始發(fā) 施工 ........................................................................................ 67 負(fù)環(huán)加固鋼支撐安裝 ...................................................................................... 67 風(fēng)道內(nèi)負(fù)環(huán)拼裝 .............................................................................................. 67 負(fù)環(huán)管片加固 .................................................................................................. 68 二次始發(fā)掘進(jìn)施工控制 .................................................................................. 69 風(fēng)道內(nèi)負(fù)環(huán)拆除 ............................................................................................ 70 6 盾構(gòu)過(guò)風(fēng)險(xiǎn)源施工 .............................................................................................................. 71 設(shè)計(jì)施工措施 .................................................................