宝鸡市蟠龙新区污水处理厂至千河段排水工程三标段穿越顶管施工专项方案编制：____________________审核：____________________审批：____________________陕西广宏建设工程有限公司2017年7月目录一、工程概况........................................................31.1编制依据..........................................................................................................31.2编制目的..........................................................................................................31.3概述..................................................................................................................41.4项目的工程量..................................................................................................41.5工程水文地质及条件及评价.........................................................................41.6场内交通条件..................................................................................................41.7施工供电..........................................................................................................51.8施工供水.........................................................................................................51.9混凝土生产系统..............................................................................................51.10出渣场............................................................................................................51.11施工供风........................................................................................................5二、顶管工作规划........................................................................................................52.1格栅机械顶管施工方案的选择......................................................................52.2施工现场平面布置..........................................................................................6三、施工技术方案......................................................................................................63.1工作坑（跌水消能井）.................................................................................63.1.1开挖浇筑.................................................................................................73.1.2池壁钢筋绑扎.........................................................................................83.1.3护壁模板安装与拆除.............................................................................83.1.4护壁混凝土浇灌.....................................................................................83.2顶管施工.........................................................................................................93.2.1格栅机械挤压式顶管施工工艺流程.....................................................93.2.2施工准备工作.........................................................................................93.2.3平面布置.................................................................................................93.2.4顶管工作井内设备安装.......................................................................123.2.5引入测量轴线及水准点.......................................................................123.2.6千斤顶和顶铁的安装...........................................................................133.2.7洞口止水圈安装...................................................................................133.2.8顶...
