【正文】 ................................................................................................... 109 建、構(gòu)筑物的風(fēng)險(xiǎn)分析 ..........................................................................................................................................110 建（構(gòu)）筑物保護(hù) .................................................................................................................................................110 2．管線調(diào)查與保護(hù) .......................................................................................................... 110 概述 ......................................................................................................................................................................110 地下管線調(diào)查 ......................................................................................................................................................... 111 地下管線的極限變形量 .......................................................................................................................................... 111 地下管線的保護(hù) ................................................................................................................................................... 111 3．協(xié)調(diào)與接口 .................................................................................................................. 112 外界對(duì)工程的干擾與協(xié)調(diào) ....................................................................................................................................112 接口 ........................................................................................................................................................................112 4．沉降監(jiān)測(cè) ...................................................................................................................... 114 一般要求 ................................................................................................................................................................114 地表允許隆陷值 .....................................................................................................................................................114 監(jiān)測(cè)方案 ................................................................................................................................................................114 地面沉降監(jiān)測(cè) .........................................................................................................................................................114 地面建筑物監(jiān)測(cè) .....................................................................................................................................................115 地下管線監(jiān)測(cè) .........................................................................................................................................................115 穿越跨線橋 ..............................................................................................................................................................115 軟弱地層施工 ..........................................................................................................................................................116 穿越江河或大面積水塘 ...........................................................................................................................................116 施工通道 ...............................................................................................................................................................116 5．管片生產(chǎn) ...................................................................................................................... 116 廣州市軌道交通十四號(hào)線支線工程【施工 4 標(biāo)】土建工程 招標(biāo)文件 4 總則 ......................................................................................................................................................................116 材料 ......................................................................................................................................................................117 實(shí)施 ..................................................................................................................................................................... 121 6．盾構(gòu)掘進(jìn) ...................................................................................................................... 122 總則 ....................................................................................................................................................................... 122 工程范圍 ............................................................................................................................................................... 123 盾構(gòu)機(jī)選型 .......................................................................................................................................................... 123 盾構(gòu)機(jī)設(shè)計(jì) ............................................................................................................................................................ 123 盾構(gòu)掘進(jìn) ................................................................................................................................................................ 126 環(huán)形間隙注漿 ......................................................................................................................................................... 126 人員進(jìn)入加壓狀態(tài)下的切削倉(cāng) .............................................................................................................................. 126 超前注漿 ............................................................................................................................................................... 127 地面加固 ............................................................................................................................................................... 127 開(kāi)挖刀具的更換 ............................................................................................................