利用大功率充电法定位水库岩溶含水渗漏通道  

APPLICATION OF HIGH-POWER CHARGING METHOD IN LOCATING KARST WATER-CONTAINING SEEPAGE CHANNEL

作　　者：王开勋 贺昌坤 罗锐恒 周建兵 WANG Kai-xun;HE Chang-kun;LUO Rui-heng;ZHOU Jian-bin(Institute of Wenshan Hydraulic and Electric Power Survey,Wenshan 663000,China)

机构地区：[1]文山壮族苗族自治州水利电力勘察设计院,文山663000

出　　处：《地质灾害与环境保护》2023年第1期83-89,共7页Journal of Geological Hazards and Environment Preservation

摘　　要：小河尾水库自建成蓄水以来,存在严重的库水渗漏问题,虽经多次防渗处理,但水库渗漏的情况仍未改善。为了确定小河尾水库地下岩溶渗漏通道位置走向,以指导后期水库防渗工程部署,本次选择V8多功能电磁法系统的大功率充电法技术对研究区水库深部岩溶含水渗漏通道进行快速准确地定位,通过对大功率充电法探测结果特征分析及结合地质资料表明,该水库主要存在2条推测北北东向岩溶含水渗漏通道,其中I号岩溶渗漏通道位于灰岩与硅质岩接触带附近,II号岩溶渗漏通道位于灰岩内部岩溶裂隙,且两条岩溶通道具有一定的水力联系。根据物探结果特征及地质资料,建立小河尾水库岩溶含水渗漏通道理想模型,其渗漏通道机理为地下水对可溶岩、可溶岩与非可溶岩接触带的长期接触溶蚀作用形成。Since the completion of xiaohewei reservoir,there has been a serious problem of reservoir water leakage.Although anti-seepage treatment has been carried out for many times,the leakage of the reservoir has not been improved.In order to determine the location of the underground Karst leakage channel of Xiaohewei Reservoir to guide the later deployment of the reservoir anti-seepage project,this paper selects the high-power charging method technology to quickly and accurately locate the deep Karst water-bearing leakage channel of the reservoir in the study area.The analysis of the characteristics of the detection results and the combination of geological data show that there are mainly two inferred Karst water-bearing seepage channels in the reservoir.The No.1Karst seepage channel is located near the contact zone between limestone and siliceous rock,and the No.2Karst seepage channel is located near the contact zone of limestone and siliceous rock.The channel is located in the Karst fissure inside the limestone,and the two Karst channels have a certain hydraulic connection.According to the characteristics of geophysical prospecting results and geological data,an ideal model of Karst water-bearing seepage channel in Xiaohewei Reservoir is established.

关 键 词：岩溶水库 大功率充电法 渗漏通道 渗漏机理 

分 类 号：X141[环境科学与工程—环境科学] X143[天文地球—工程地质学] P642.25[天文地球—地质矿产勘探] TV697.32[天文地球—地质学]