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顶管施工工艺流程及动画
梳理密闭式顶管的施工工艺流程，工作井开挖后施做后背墙、基座导轨以及洞口加固，然后吊装顶管设备，采用土压平衡顶进或泥水加压顶进，长距离顶管中设置中继间接力顶进，更多一级建造师市政课程关注蜗牛市政
一级建造师市政基础知识系统性讲解21/36
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