降水、沉井及顶管施工方案 编制： 审核： 审批：段项目部目 录1. 工程概况...........................................................51.1 工程简介.......................................................51.2 编制依据.......................................................51.3 地质概况.......................................................62.施工部署............................................................72.1 施工方案选择...................................................72.2 施工管理.......................................................72.3 管理目标......................................................103.施工流程...........................................................103.1 施工流向安排..................................................103.2 施工测量......................................................113.3 施工工艺流程..................................................114.降水施工...........................................................134.1 降水方案......................................................134.2 降水计算......................................................134.5 其他注意事项..................................................185. 沉井...........................................................185.1 沉井结构形式..................................................185.2 沉井施工流程..................................................195.3 沉井基坑开挖..................................................195.4 沉井计算......................................................195.5 沉井下沉......................................................265.6 沉井测量、质量控制及注意事项..................................286. 顶管施工..........................................................316.1 顶管机的选择..................................................316.2 施工工艺流程..................................................326.3 平面布置及井内布置............................................33平面布置图.....................................................
