岩溶地质钻孔灌注桩施工探讨

Bored Pile Construction in Karst Geology

鉴于岩溶地区钻孔灌注桩施工困难的情况,结合具体实例,对岩溶地质钻孔灌浆桩施工技术、钻孔过程中出现溶洞的处理方法及坍孔的处理措施进行了探讨,提出首先在前期勘测中要明确溶洞的地质情况,然后以不同溶洞的发育情况为依据,选择适宜的施工方法,并对可能发生的事故进行合理预测和有效控制,将损失降到最小。

The construction of bored piles in karst area. Combined with an example, this paper discusses the construction technology of crilled grouting piles in karst area, treatment of karst cave appearing in drilling process, and the treatment of hole collapse. The paper puts forward the following points. Firstly, we must make clear the geological situation of karst cave in the previous survey. Then according to the different karst cave development, we should select the suitable construction method, do reasonable prediction and effective control for the accident may happen, so as to minimize the damage.