综合地球物理在灵渠工程地质调查中的应用

Application of integrated geophysical methods to geological survey

应用高密度电法、地质雷达及面波测试等综合地球物理方法,解决广西兴安灵渠渗水治理工程中地质调查的实际问题.采用高密度电法探测场区地层情况及秦堤渗水病害情况;地质雷达方法探测探明了场区表层土体密实度及空洞情况;面波测试进行了场区覆盖层速度分层及不良地质现象判定.最后,综合分析三种物探方法的探测结果并将其与后期钻探成果进行了对比验证.结果表明:综合物探探测成果与后期钻探验证结果一致.工程实践表明,采用多种物探方法相互印证,对比解译分析在工程地质调查中是必要的也是十分有意义的.

Taking Guangxi province’s project of managing the water seepage as the background in the efficacious canal,we introduce the basic means and methods of three geophysical prospecting：the high density resistivity method,geological radar and the surface wave test.Combined with the ground engineering geological conditions,we chose the high density resistivity method to detect the ground formation and qin dike seepage diseases,Radar detection to prove the ground surface soil compactness and the surface wave test to the velocity layer of covering layer and bad geological phenomenon.Finally,we validated that they are consistent by comparing the comprehensive analysis of three methods of geophysical detection results with the late drilling results.Practice shows that using various geophysical exploration methods and comparative interpretation analysis in engineering geological survey is necessary as well as meaningful.