高层住宅楼及地下车库降水工程施工方案.doc

目 录 1、工程概况····················································· 3 1.1工程基本概况···················································3 场地地质条件··················································3 场地水文地质条件··············································4 1.4工程降水施工的目的及任务·······································4 2、编制依据·······················································5 3、工程降水施工方案··············································5 3.1工程降水施工条件分析···········································5 3.2工程降水施工方法的确立·········································6 3.3降水井埋置深度的确定···········································6 3.4工程降水水文地质参数的确定·····································7 3.5基坑涌水量计算·················································8 3.6单井出水能力、降水井数量的确定··································9 3.7降水井平面位置的确定··········································10 3.8基坑内降深值验算··············································11 3.9达到设计降深时间预测··········································11 3.10降水井施工方案···············································12 3.11排水施工方案·················································12 3.12抽水试验、降水运行及水位监测··································13 4、减少工程降水对基坑周边环境影响的技术措施·················15 4.1工程降水对基坑周边环境影响预测及防治措施·······················15 4.2基坑周边环境的监控措施·····································16 4.3确保地基土不受振动的技术措施·······························16 4.4井点降水影响范围内地面及附着物沉降量估算···················17 4.5井点降水影响范围内地面及附着物沉降的防范措施···············18 5、基坑降水工程施工方案总结·································19 6、基坑降水施工组织设计方案···································19 6.1降水施工质量的技术保证措施·································19 6.2施工组织部署和协调管理·····································20 6.3施工技术措施···············································20 6.4施工应急预案···············································21 6.5主要设备材料供应及需要量计划·······························23 6.6质量保证体系及措施·········································24 6.7文明施工与环境保护措施·····································25 7、参考文献 ···················································26 附图： 降水管井点平面布置图