电磁波CT法与钻孔电视在溢流坝帷幕区渗漏探测结合应用研究  

Application Research on Electromagnetic Wave CT Method Combined with Borehole Television in Leakage Detection of Curtain Area of Overflow Dam

作　　者：移根旺 宋传星 周海滨 周祥勇 YI Genwang;SONG Chuanxing;ZHOU Haibin;ZHOU Xiangyong(China Energy Engineering Group Guangxi Electric Power Design Institute Co.,Ltd.,Nanning,Guangxi,530007)

机构地区：[1]中国能源建设集团广西电力设计研究院有限公司,广西南宁530007

出　　处：《红水河》2020年第6期95-98,113,共5页Hongshui River

摘　　要：笔者以跨孔电磁波CT法与钻孔电视在某水电站溢流坝帷幕区渗漏探测为实例进行研究,通过对大坝段灌浆帷幕区进行物探探测并结合地质情况进行分析,采用跨孔电磁波CT法在已有排水孔中逐段测试,查明了该坝段裂隙(溶洞)的空间分布情况,结合钻孔电视孔壁观测,确定了渗水位置及水源方向,为渗水处理方案的设计提供了充分依据。The authors take the leakage detection of the cross-hole electromagnetic wave CT method and the borehole television in the curtain area of a hydropower station overflow dam as an example through the geophysical exploration of the grouting curtain area of the dam section and the analysis of the geological conditions the cross-hole electromagnetic wave CT method is used to test the section by section in the existing drainage holes and the spatial distribution of cracks karst caves in the dam section is identified.Combined with the observation of the borehole wall of the borehole television the seepage location and water source direction are determined which provides a sufficient basis for the design of the seepage treatment scheme.

关 键 词：跨孔电磁波CT法 钻孔电视 渗漏探测 应用 

分 类 号：P631[天文地球—地质矿产勘探]