成都地铁3号线二三期工程土建8标三锦明挖区间降水工程安全专项施工方案目录1.编制依据、原则及范围.............................................................11.1编制依据..................................................................................................11.2编制原则..................................................................................................21.3编制范围..................................................................................................22工程概况.........................................................................................22.1工程位置..................................................................................................22.2工程地质与水文地质..............................................................................32.2.1地形地貌.......................................................................................................32.2.2工程地质.......................................................................................................32.2.3水文地质.......................................................................................................42.3周边环境..................................................................................................52.3.1地面交通.......................................................................................................52.3.2周边建筑.......................................................................................................62.3.3地下管线.......................................................................................................63降水施工方案.................................................................................83.1降水设计..................................................................................................83.1.1降水设计总体思路........................................................................................83.1.2降水井平面布置............................................................................................93.1.3降水井构造...................................................................................................9中铁五局（集团）有限公司1成都地铁3号线二三期工程土建8标三锦明挖区间降水工程安全专项施工方案3.1.4降水计算.....................................................................................................103.2降水井施工流程及方法........................................................................103.2.1工艺流程.....................................................................................................103.2.2施工方法......................................................................................................113.3降水井运行管理....................................................................................143.3.1试运行.........................................................................................................143.3.2降水运行.....................................................................................................143.4降水监测................................................................................................153.4.1水位观测孔施工..........................................................................................153.4.2降水监测...............................................................................
