综合物探在水库大坝渗漏隐患检测中的应用  

Application of integrated geophysical prospecting in the detection of hidden leakage of reservoir dam

作　　者：王永刚 吕明 张俊 WANG Yonggang;LV Ming;ZHANG Jun(Power China Guizhou Electric Power Engineering Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]中国电建集团贵州电力设计研究院有限公司,贵阳550081

出　　处：《物探化探计算技术》2024年第1期118-126,共9页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：水库大坝渗漏隐患检测是水利工程安全运行及除险加固工作的重要环节,对保障大坝安全运行及下游人民生命财产安全具有重要意义。笔者根据水库大坝物性特征的分析,充分利用直流电法对渗漏通道视电阻率响应特征灵敏的优点,合理选取了充电法及高密度电法对水库大坝进行综合探测,首先利用充电法追索坝体渗漏通道,然后结合高密度电法对每条测线二维纵向剖面进行解析,通过两种方法的相互验证,有效圈定渗漏隐患发育位置及规模,取得了可靠的成果,从而达到由点及线、由线及面的综合探测效果,为水库大坝渗漏通道排查及除险加固提供精确可靠的依据。Reservoir dam leakage detection is essential to operate and reinforce water conservancy projects safely.It is significant to ensure the safe operation of DAMS and the safety of downstream people’s lives and property.According to the reservoir dam analysis’s physical characteristics,this paper fully uses the advantages of the direct current method,which is very sensitive to apparent resistivity response characteristics for leakage channels.Therefore,the mise-a-la-masse and high-density resistivity methods are reasonably selected for comprehensive detection of the reservoir dam.Firstly,the mise-a-la-masse method is used to pursue the leakage channel of the dam body and then combined with the high-density resistivity method for interpreting the two-dimensional longitudinal profile of each line.Finally,through mutual verification of these two methods,the location and scale of potential leakage hazards are delineated effectively,and reliable results are obtained.So as to achieve the comprehensive detection effect of point to line,line to plane,and provide an accurate and reliable basis for the investigation and reinforcement of the seepage channel of the reservoir dam.

关 键 词：综合物探 水库大坝 渗漏隐患 充电法 高密度电法 除险加固 

分 类 号：P319.2[天文地球—固体地球物理学]