顶管技术在市政截污管道施工中的实践经验

随着顶管技术的发展,顶管施工技术在市政截污干管工程中得到了广泛应用,因此该技术的施工经验具有很强的应用价值.从顶管工作井及接收井的大小、沉井施工中预留孔洞大小及井底与预留孔洞距离的确定等方面总结了顶管工作井及接受井设置中应注意的问题;同时针对顶管过程中遭遇有石头的地质情况,介绍了设置破岩井或采取开挖施工来处理的措施;此外,还介绍了止水措施(搅拌桩或旋喷桩止水)及顶管管材的选择等.

Practical Experience of Pipe Jacking Technology in Construction of Municipal Intercepting Sewer

With the development of pipe jacking technology,it is widely used in municipal intercepting sewer project.So the construction experience of the technology has very good value.The problems needing attention in the design of working shafts and receiving pits for pipe jacking are summarized from determination of the shaft and pit dimensions,the reserved hole dimension of sinking well and the distance from the well bottom to the reserved hole.At the same time,the measures of stone breaking well or excavation co...