小极距高密度电法在城镇供水管漏水检测中的应用  

Application of high-density electrical method with small polar distance to the water leakage detection of urban water supply pipes

作　　者：林希仲 张永命 姚学虎 Lin Xizhong;Zhang Yongming;Yao Xuehu(Guangzhou Tianchi Surveying and Mapping Technology Co.,Ltd.,Guangzhou 510660,Guangdong,China;Geophysical Exploration Institute,China Metallurgical Geology Bureau,Baodin 071051,Hebei,China)

机构地区：[1]广州市天驰测绘技术有限公司,广东广州510660 [2]中国冶金地质勘查工程总局地球物理勘察院,河北保定071051

出　　处：《地质学刊》2018年第4期681-685,共5页Journal of Geology

摘　　要：城市地下供水管破损漏水检测,一般使用听音工具和设备来进行,这种需要漏水点传出声音的检测方式,效果往往并不理想。使用一种新的检测方法,无需利用声音,而是通过供水管漏水造成地层电性变化这一特征,使用小极距高密度电法查明管道漏水点位置。该检测方式不仅解决了常规方法难以查明的供水管漏水问题,而且拓展了小极距高密度电法的应用空间。Acoustic instrument and equipment are commonly used in urban underground water supply pipes to detect damage and leakage,but these methods often fail to achieve ideal result for most damages and leakages. This paper describes a new high-density electrical method with small polar distance for the detection of damaged and leaking parts in concrete water supply pipe,which is not based on acoustic features but the change of electrical properties of strata due to the leakage of water supply pipe. This method not only solves the problem of water leakage in the water supply pipe which is difficult to find out by conventional method,but also expands the application of the small distance high-density resistivity method.

关 键 词：地下供水管 漏水点 漏水特征 高密度电法 电性异常 

分 类 号：P631.32[天文地球—地质矿产勘探]