高密度电法仪在溃坝试验中的应用研究  

Study on application of high-density resistivity instrument to dam failure experiment

作　　者：谷艳昌[1,2] 王宏巍[3] 王宏[1,2] 黄海兵[1,2] 庞琼[1,2] 徐进超[1] 

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]水利部大坝安全管理中心,江苏南京210029 [3]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《水利水电技术》2015年第3期94-96,共3页Water Resources and Hydropower Engineering

基　　金：国家国际科技合作专项(2011DFA72810);国家自然科学基金(51209143);南京水利科学研究院基金项目(Y712001;Y713007)

摘　　要：高密度电法是水利水电工程隐患探测中重要的物探方法之一,文中对高密度电法基本原理以及日本OYO公司生产的Mc OHM Profiler 4多道数字电阻率测量仪进行了简单介绍。应用研究借助原体大坝管涌溃决试验,将高密度电法仪应用在试验蓄水过程中,通过电极布设与探测,获取坝体蓄水期的视电阻率场分布与变化;结合水库蓄水期库水位上升、坝体渗流场发展过程资料,分析坝体电阻率场与渗流场之间的关系。分析成果表明,高密度电法仪获得的坝体电阻率发展过程与大坝浸润面发展过程具有一致性,一定程度上可以用坝体视电阻率分布反应坝体渗流场变化情况。The high density resistivity method is one of the important geophysical detecting approaches for detecting the hidden troubles in water resources and hydropower projects. The basic principle of the high density resistivity method and the Mc OHM Profiler 4 multi-channel resistivity measurement instrument manufactured by the Japanese company OYO are briefly introduced herein at first,and then the high density resistivity method is applied to the experimental water impoundment process for this study by mean of the prototype experiment for a dam failure experiment. Through the arrangement of electrodes and the detections,the distribution and change of the apparent resistivity field of the dam body during the impoundment are obtained. Thereafter,the relationship between the field of resistivity and the seepage field of the dam body is analyzed in accordance with the rise of the reservoir water level during the impoundment and the data of the seepage field developing process. The analysis result shows that the resistivity field developing process in the dam body is consistent with that of the phreatic surface of the dam and the change of the seepage field of the dam body can be reflected by the apparent resistivity of the dam at a certain extent.

关 键 词：溃坝试验 高密度电法 渗流场 电阻率场 

分 类 号：TV698[水利工程—水利水电工程]