武广客专线流溪河特大桥部分地段串通溶洞、砂层、流塑状黏土共存,且因溶洞串通,施工时极易大量漏浆且部分溶洞连通既有河流导致地下水位随潮汐变化而变化。本文介绍了武广客专线流溪河特大桥串通溶洞地质条件下钻孔桩施工的处理方法和施工要点。 Due to the co-existence of cave, sand layer and flow-plastic clay in some sections of Liuxihe Grand Bridge in Wuhan-Guangzhou Passenger Line, due to the collusion of karst caves, a large amount of mud can be leached during construction and part of karst caves are connected with existing rivers to cause the groundwater table to change with tidal changes. This article introduces the treatment methods and construction essentials of the bored pile construction under the geological conditions of the Sikong karst cave in the Wu-Guang passenger special line.