跨孔电阻率CT法在贵阳轨道交通L2岩土工程勘察中的应用

Application of Cross-Hole Resistivity CT Method in Geotechnical Engineering Investigation of Guiyang Rail Transit L2

贵阳轨道交通L2工程地处典型的喀斯特地貌类型区域,地质构造比较发育,常规的勘探方法对勘探点之间的溶洞、破碎带等的探测存在一定局限性。因此,采用跨孔电阻率CT法和钻孔相互验证的方式,基本查明贵阳轨道交通L2油榨街站—贵钢站区间下穿市南路、宝山南路高架的地质条件,为设计和施工提供更为翔实的地质勘察资料。

Guiyang Rail Transit L2 project is located in a typical karst landform type area,where the geological structure is relatively developed.The conventional exploration methods have some limitations in the detection of karst caves&fracture zones between exploration points.Therefore,the geological conditions of the section of Youzhajie Station-Guigang Station of Guiyang Rail Transit L2 under Shinan Rd.&South Baoshan Rd.Viaduct are basically found out by using cross-hole resistivity CT method&borehole mutual verification;which may provide more detailed geological survey data for design&construction.