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湄洲湾至重庆高速公路莆田段（芦至五星段）萩A12合同段人工挖孔桩施工方案编制：审核：审批：中铁航空港集团第一工程有限公司（湄渝项目部）2013年1月1日目录1、编制说明与依据.............................................................................................51.1编制说明........................................................................................................51.2编制依据........................................................................................................51.3施工总体目标................................................................................................62、工程概况.........................................................................................................62.1工程概况........................................................................................................62.2工程地质与水文地质条件............................................................................73、施工方案.........................................................................................................83.1总体方案........................................................................................................83.2工程投入主要施工机械、设备及进场计划................................................93.3劳动力安排计划............................................................................................93.4工期安排......................................................................................................104、施工准备.......................................................................................................104.1组织准备......................................................................................................104.2场地准备......................................................................................................104.3材料准备......................................................................................................114.4技术准备......................................................................................................115、工程施工测量...............................................................................................125.1施工测量要求..............................................................................................125.2施工测量放样..............................................................................................125.3平面控制测量..............................................................................................135.4高程控制测量..............................................................................................135.5主要测量仪器设备......................................................................................135.6测量质量保证措施......................................................................................136、人工挖孔灌注桩施工...................................................................................146.1施工方法......................................................................................................146.2挖掘..............................................................................................................146.3支撑护壁......................................................................................................156.4排水..........................................