综合物探在隧道岩溶水害勘察中的应用

Application of Integrated Geophysical Exploration in Tunnel Karst Water Disaster Investigation

工程物探凭借着无损、高效、低成本的特点发挥着重要的作用。为满足工程勘察的要求,采用综合物探方法可以提高物探成果的地质解释精度。通过结合工程实例,使用高密度电法、大地电磁法、探地雷达和瞬变电磁法等4类不同的物探方法技术,进行隧道岩溶发育情况的勘察。通过相互比较和综合分析,其准确性得到了大幅提高,取得了很好的勘探效果。

Engineering geophysical exploration plays an important role in site foundation investigation with the characteristics of non-destructive, high efficiency and low cost. Combined with engineering examples, four kinds of geophysical prospecting methods, such as high density resistivity method, magnetotelluric method, ground penetrating radar and transient electromagnetic method, are used to survey the development of karst tunnel. Through the comparison and comprehensive analysis of the results obtained by the four geophysical methods, and combined with geological data, the accuracy of drilling has been greatly improved, and good exploration results have been achieved.