护筒跟进在溶洞桩基施工中的应用

Application of Casing Follow-up in Pile Foundation Construction in Karst Cave

针对当前桥梁桩基施工中出现的多层较大未填充溶洞问题,可选择护筒跟进技术解决溶洞桩基施工中的塌孔埋钻、漏浆等问题,保障钻孔成桩稳步推进。论文以某工程为例,探索岩溶桩基施工常见问题以及护筒跟进工艺在溶洞桩基施工中的应用。

In view of the existing problems of multi-layer and large unfilled karst caves under the bridge pile foundation, the casing follow-up technology can be selected to solve the problems of hole collapse, buried drilling and slurry leakage in the construction of karst cave pile foundation, so as to ensure the steady progress of drilling pile. Taking a project as an example, this paper explores the common problems of karst pile foundation construction and the application of casing follow-up technology in Karst pile foundation construction.