岩溶强烈发育地区桥梁桩基溶洞处理方法

Karst Cave Treatment Methods of Bridge Pile Foundation in Strong Karst Development Area

以深圳市某轨道交通工程为工程背景,采用地质钻探与物探结合的方法,探明高架区间岩溶发育规模和空间形态,并分类制定充填法、注浆法及钢护筒跟进法等溶洞处理方法。通过岩溶处理检测及桩基检测结果论证所制定的岩溶处理方案安全可靠,在深圳地区可以推广运用,望能为同类工程提供借鉴。

Taking a urban rail transit project in Shenzhen as the engineering background,the development scale and spatial morphology of karst caves in elevated section are explored by combining geological drilling and geophysical prospecting,and the treatment methods of karst caves such as filling method,grouting method and steel casing follow-up method were classified and formulated.Through the test results of karst treatment and pile foundation,it is proved that the karst treatment methods used in this project is safe and reliable,which can be popularized and applied to similar projects in Shenzhen area.