第1页共139页南宁市轨道交通3号线一期工程(科园大道~平乐大道)施工总承包02标土建8工区金～埌区间钢套筒始发安全专项施工方案目录1编制..........................................................................................................................71.1编制依据........................................................................................................71.2编制原则........................................................................................................81.3编制范围........................................................................................................81.4盾构始发、到达范围....................................................................................82工程概况..................................................................................................................82.1工程简述........................................................................................................82.1.1金～埌区间..........................................................................................82.1.2金～埌区间穿越的主要地层..............................................................92.1.3金～埌区间始发段线路情况介绍....................................................112.2工程地质......................................................................................................112.2.1地层描述............................................................................................112.2.2区间岩土主要物理力学参数表........................................................142.4水文地质情况分析......................................................................................142.5盾构机情况描述..........................................................................................153总体施工方案........................................................................................................203.1盾构始发里程..............................................................................................203.2施工工艺流程..............................................................................................213.3盾构始发注意事项......................................................................................21第2页共139页第1页共139页南宁市轨道交通3号线一期工程(科园大道~平乐大道)施工总承包02标土建8工区金～埌区间钢套筒始发安全专项施工方案4施工准备................................................................................................................224.1钢套筒的定位及安装..................................................................................224.2始发测量......................................................................................................224.3盾构始发配套设施施工..............................................................................234.4降水井施工工艺..........................................................................................234.4.1降水井布置情况................................................................................234.4.2前期准备............................................................................................234.4.3降水井施工工艺................................................................................234.4.4降水的监测与控制............................................................................264.5施工监测...........................
