【正文】 .....................................................................................7 分體始發(fā)簡(jiǎn)述 .....................................................................................................................................8 ........................................... 13 始發(fā)洞門 ........................................................... 13 預(yù)埋鋼環(huán)加工的技術(shù)要求 ...................................................................................................... 14 預(yù)埋鋼環(huán)安裝 .......................................................................................................................... 14 洞門鋼環(huán)安裝 .......................................................................................................................... 14 洞門密封措施及控制要點(diǎn) ....................................................................................................... 15 洞內(nèi)砼導(dǎo)臺(tái)澆注、導(dǎo)軌安裝 ............................................. 15 洞口段 ....................... 16 分體始發(fā)期間管片砂漿等物料運(yùn)輸 ....................................... 16 物料運(yùn)輸方式 .......................................................................................................................... 16 軌道布設(shè)形式 .......................................................................................................................... 17 反力架安裝 .......................................................... 17 反力架中心里程的確定 ........................................................................................................... 17 反力架的掩藏與固定以及后期安裝 ........................................................................................ 18 負(fù)環(huán)管片拼裝 ....................................................... 20 負(fù)環(huán)管片的拼裝 ..................................................................................................................... 20 負(fù)環(huán)管片的固定 ..................................................................................................................... 20 皇崗工作井井底工藝底板澆筑及始發(fā)托架安裝 .............................. 20 始發(fā)掘進(jìn) ........................................................... 22 盾構(gòu)掘進(jìn) ...................................................................................................................................... 22 盾構(gòu)掘進(jìn)主要施工參數(shù)設(shè)定 ........................................... 23 切口水壓設(shè)定 ...................................................................................................................... 23 掘進(jìn)速度 .............................................................................................................................. 23 掘削量的控制 ...................................................................................................................... 23 盾尾油脂壓注 ...................................................... 24 盾構(gòu)掘進(jìn)姿態(tài)控制 .................................................. 24 盾構(gòu)掘進(jìn)方向控制 .............................................................................................................. 24 盾構(gòu)掘進(jìn)姿態(tài)的調(diào)整與糾偏 ................................................................................................ 25 方向控制及糾偏注意事項(xiàng) ................................................................................................... 25 4 泥漿管理 ......................................................... 26 泥漿循環(huán)系統(tǒng)管理 ............................................................................................................... 26 泥水壓力管理 ...................................................................................................................... 29 （ 1）泥水壓力設(shè)定 ........................................................................................................................... 29 （ 4）泥水性能管理 ........................................................................................................................... 29 管片拼裝 ......................................................... 30 管片選型 ........................................................ 31 管片拼裝的方法 .................................................. 31 管片拼裝 的質(zhì)量保證措施 ........................................... 32 同步注漿及壁后二次注漿 ......................................................................................................... 32 同步注漿 ........................................................ 32 （ 2）同步注漿技術(shù)參數(shù) ................................................................................................................... 34 （ 3）同步注漿方法、工藝與設(shè)備 .................................................................................................... 34 （ 5）注漿效果檢查 ........................................................................................................................... 35 同步注漿 ........................................................ 35 箱涵拼裝 ...................................................................................................................................... 35 帶壓作業(yè) ...................................................................................................................................... 36 進(jìn)出密封倉的程序 ................................................ 36 安全技術(shù)措施 .................................................... 37 .................................................................................................................... 37 ......................................................................................................... 39 .................................................... 39 ....................................................... 40 .................................... 44 S550 與 S623/S624 井底空間的利用規(guī)劃 ...................... 45 .................................. 46 施工風(fēng)險(xiǎn) ........................................................................................................................................... 46 風(fēng)險(xiǎn)應(yīng)對(duì)措施 .................................................................................................................................. 47 9. 現(xiàn)場(chǎng)突發(fā)事件應(yīng)急措施及應(yīng)急預(yù)案 .......................