河南第一纺织有限公司10万锭纺纱生产线建设项目动力站基坑降水支护方案编制：审核：中宇建设集团股份有限公司二○一五年九月目录第1章编制原则与依据..............................................................................................................................31.1编制原则.........................................................................................................................................31.2编制依据.........................................................................................................................................3第2章工程概况........................................................................................................................................32.1工程概况.........................................................................................................................................32.2工程地质资料..................................................................................................................................41、地形地貌.......................................................................................................................................42、地层岩性.......................................................................................................................................43、水文地质条件..............................................................................................................................42.3基坑特点.........................................................................................................................................5第3章管理目标........................................................................................................................................53.1质量目标.........................................................................................................................................53.2安全文明.........................................................................................................................................5第4章基坑支护及降水设计方案..........................................................................................................54.1基坑支护型式选择与设计.............................................................................................................54.2土钉墙支护工艺设计及总说明.....................................................................................................64.3基坑土钉墙支护计算书.................................................................................................................74.4降水设计方案考虑的特征重点：...............................................................................................134.5降水计算及现场布置...................................................................................................................13第5章施工方案....................................................................................................................................155.1测量...............................................................................................................................................155.2基坑降水方案...............................................................................................................................165.2.1施工准备................................
