高密度电法和地震法是岩溶地球物理探测常用方法。在南水北调中线工程南阳段岩溶探测实践中采用两种方法综合探测取得良好效果,查明了岩溶发育区的位置及规模,确定了岩性分界面,同时还获得了探测区地层的视电阻率、地震波速等参数,为工程建设提供了准确依据,保障总干渠的顺利建设及安全运行。
The high density resistivity and seismic methods are common in Karst detection.The combining of these two methods can have better results in the karst detection on Nanyang section of South-to-North water diversion middle route project.This paper surveys the site and scale of Karst area,defines the interface between different layers,and obtains such parameters as resistivity and velocity.In addition,this paper provides evidence for engineering reconstruction and ensuring the safety of the main canal.