污水管道沟槽深基坑放坡开挖及拉森钢板桩支护专项方案目录1.工程概况.........................................................................................................................................11.1项目概况................................................................................................................................................11.2深基坑工程概况.....................................................................................................................................11.2.1基坑简介简单...........................................................................................................................................11.2.2工程地质、水文地质概况.......................................................................................................................21.3施工平面布置图.....................................................................................................................................61.4施工要求和技术保证条件......................................................................................................................61.4.1施工要求...................................................................................................................................................61.4.2技术保证条件...........................................................................................................................................62.编制依据.........................................................................................................................................73.施工进度计划、材料与设备计划..............................................................................................83.1施工进度计划..........................................................................................................................................83.2材料计划.................................................................................................................................................83.3机械设备投入计划..................................................................................................................................84.施工工艺技术.................................................................................................................................94.1技术参数.................................................................................................................................................94.1.1基坑开挖技术参数...................................................................................................................................94.1.2降水设计技术参数.................................................................................................................................104.2工艺流程...............................................................................................................................................104.3施工方法...............................................................................................................................................124.3.1基坑开挖施工.........................................................................................................................................124.3.2井点降水的施工................................................................................
