旋挖钻全跟进式护筒钻孔施工工艺探讨

Discussion on Construction Technology of Rotary Drilling Full-following Casing Drilling

旋挖钻全跟进式护筒钻孔施工工艺是一种克服旋挖钻软土钻进过程中孔壁缩径问题,施工速度快,能够在施工过程中保证桩基顺直,平顺的施工工艺。旋挖钻全跟进式护筒钻孔施工工艺适用于软弱地基桩基施工、场地狭小且施工工期短。特别是地质情况较为复杂、地表水系发达的地质。

The construction technology of full-following casing for rotary excavation drilling is to overcome the problem of hole wall shrinkage.The construction speed is fast and the pile foundation can be straight and smooth during construction Construction process.Rotary drilling full-follower casing drilling construction technology is suitable for pile foundation construction on weak ground and narrow site,and the construction period is short.In particular,it is suitable for the relatively complicated geology and the developed surface water system.