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该文结合工程实例,阐述了高密度电阻率法在探测基岩面和溶洞方面的应用。该次高密度电阻率法探测采用单边三极连续滚动(S3P)测深装置,基本探明了场地内灰岩的埋深,推测出了溶洞的分布。经钻探验证,溶洞位置、基岩面深度推测结果与钻探数据较为吻合,物探结果为设计选择地基处理方案提供了依据。
Combined with engineering examples, this paper describes the application of high-density resistivity method in detecting bedrock and caverns. The high-density resistivity method uses single-sided three-pole continuous rolling (S3P) sounding device to basically ascertain the depth of the limestone in the site and infer the distribution of the cave. Proved by drilling, the location of karst cave and the estimation of depth of bedrock surface are in good agreement with the drilling data, and the results of geophysical exploration provide the basis for design and selection of foundation treatment scheme.