基坑支护及降排水施工方案目录1、工程概况.................................................................................................11.1、工程基本概况....................................................................................................11.2、周边环境概况....................................................................................................11.3、工程地质概况....................................................................................................11.4、水文地质条件....................................................................................................42、编制依据.................................................................................................43、基坑支护设计.........................................................................................43.1、设计计算参数....................................................................................................43.2、土钉墙设计详图................................................................................................53.3、土钉墙安全验算书............................................................................................54、基坑降排水设计.....................................................................................74.1、设计计算参数....................................................................................................74.2、降水计算............................................................................................................74.3、降水井详图........................................................................................................84.4、降水井平面布置图............................................................................................85、基坑支护和降排水施工........................................................................115.1、施工准备..........................................................................................................115.2、组织结构设置..................................................................................................125.3、施工部署..........................................................................................................135.4、土钉墙支护施工..............................................................................................135.5、降水井施工......................................................................................................146、基坑排水系统施工...............................................................................157、基坑监测...............................................................................................167.1、监测内容..........................................................................................................167.2、监测前准备工作..............................................................................................167.3、基坑支护监测方法..........................................................................................167.4、监测控制标准及警戒值..................................................................................177.5、质量及安全保证措施......................................................................................188、质量保证措施.......................................................................................188.1、质量目...
