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隐伏岩溶漏斗严重影响拟建工程的安全,对其开展针对性的勘察工作可为设计及施工提供科学依据。本文以水南特大桥8#墩勘察为例,介绍了采用地质雷达、高密度电法和浅层地震等3种方法探测隐伏岩溶漏斗的工作方法,查明了右幅8#墩岩溶漏斗的地表边界及基岩埋深变化特征,圈定了隐伏岩溶漏斗的范围和岩溶漏斗平面形态,取得了较好的探测效果,为桥基设计提供了指导性的基础资料。
Hidden karst funnel seriously affect the safety of the proposed project, and its targeted investigation can provide scientific basis for the design and construction. Taking the investigation of 8 # Pier of Shuitian Bridge as an example, this paper introduces the working methods of detecting concealed karst funnels by three methods: geological radar, high density electric method and shallow earthquake. Surface boundary and bedrock depth. The range of concealed karst funnel and the plane shape of karst funnel are defined, and a good detecting result is obtained, which provides the basic information for the design of abutment.