江苏灌区渠道渗漏电阻率法探测可行性研究  

Feasibility study on detection of channel leakage resistivity inJiangsu irrigation area

作　　者：李爱勇 王导丽 詹少全 田星 宋元辉 贺真 李键 叶良文 LI Aiyong;WANG Daoli;ZHAN Shaoquan;TIAN Xing;SONG Yuanhui;HE Zhen;LI Jian;YE Liangwen(The third geological brigade of Jiangsu Geological Bureau,Zhenjiang 212001,Jiangsu,China;Jiangsu new energy geological survey brigade,Nanjing 210018,Jiangsu,China)

机构地区：[1]江苏省地质局第三地质大队,江苏镇江212001 [2]江苏省新能源地质调查大队,江苏南京210018

出　　处：《矿产与地质》2025年第1期203-208,共6页Mineral Resources and Geology

基　　金：湖南省自然科学基金面上项目(编号:2021JJ30241)资助。

摘　　要：江苏灌区渠道发达,渠道渗漏时有发生,为了渠道安全必须采取某种技术手段快速检测渗漏情况。渠道渗漏能否采用电阻率法探测,采用什么样的参数需进行可行性研究。通过对江苏灌区渠道开展地质调查,建立了典型地质—地球物理模型,为实验和数值模拟研究提供了地球物理模拟依据。水槽物理验证实验表明对称四极法能探测到渗漏异常,以江苏渠道典型的地电模型,进行了改变异常体位置与大小、改变发送距和MN距模拟正演研究,研究表明异常体大小、埋深和AB距是影响视电阻率异常信息的关键,提高勘探对异常的分辨力必须试验确定最佳的AB距。在实际勘探中确定合适的AB距和MN距等工作参数,能有效探测到渗漏情况,电阻率法探测江苏灌区渠道渗漏是可行的。Jiangsu irrigation channels are well-developed,and the leakage occurs from time to time,so it is necessary to take certain technical means to quickly detect leakage situations for the safety of the channels.Can the leakage of channels be detected by the resistivity method?What parameters should be used for the feasibility study?By conducting geological survey of the irrigation channels in Jiangsu,a typical geological-geophysical model is established,providing the geophysical simulation basis for the experimental and numerical simulation study.The water tank physical verification experiment shows that the symmetrical quadrupole method can detect leakage anomalies.Using the typical geoelectric model of Jiangsu channels,the forward simulation study is conducted by changing the position and size of the anomaly body,changing the transmit distance and MN distance,and the study result shows that the size,depth and AB distance of the anomaly body are the key factors affecting the resistivity anomaly information.To improve the resolution of the anomaly detection,the optimal AB distance must be determined through the experimental verification.Determining suitable AB distance and MN distance and other work parameters in actual exploration can effectively detect the leakage situation,and the resistivity method for detecting leakage of Jiangsu irrigation channel is feasible.

关 键 词：江苏灌区渠道 电阻率法 渗漏探测 数值模拟与实验 

分 类 号：P631.3[天文地球—地质矿产勘探]