电流密度法在高聚物防渗墙完整性检测中的应用  

Application of Current Density Method in Detecting the Integrity of Polymer Cutoff Wall

作　　者：赵祥[1] 张宏兵[1] 冷元宝[2] 王萍[1] 杨磊[2] ZHAO Xiang;ZHANG Hongbing;LENG Yuanbao;WANG Ping;YANG Lei(Hohai University,Nanjing 211100,China;Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China)

机构地区：[1]河海大学,江苏南京211100 [2]黄河水利科学研究院,河南郑州450003

出　　处：《人民黄河》2022年第7期125-127,共3页Yellow River

基　　金：黄河水利科学研究院基本科研业务费专项(HKY-JBYW-2016-37)。

摘　　要：针对高聚物防渗墙具有绝缘性和渗透系数小的特点,采用电流密度法对高聚物防渗墙完整性进行无损检测。在防渗墙发生渗漏的部位,电流密度会显著增大,电流密度曲线出现突变;当防渗墙完整性较好时,电流密度曲线平缓。室内模拟试验和现场试验表明,电流密度法在检测高聚物防渗墙的完整性方面具有快速、便捷、高效的优点。The polymer cutoff wall is a new type of reservoir anti-seepage technology developed in recent years.The cutoff wall has the characteristics of small insulation and permeability coefficient.However,there is no effective and reasonable measures to detect the integrity of cutoff and the use of current density method can effectively detect the leakage site.In the polymer cutoff wall leakage site,the current density would be significantly increased and the current density curve would be suddenly changed.The integrity of the cutoff wall was better,the current density curve tended to be gentle and these features could be used to cutoff wall integrity testing.Laboratory simulation tests and field tests show that the current density method is an effective method for detecting the integrity of cutoff walls.

关 键 词：电流密度法 高聚物 防渗墙 完整性 

分 类 号：TV554[水利工程—水利水电工程] P319.3[天文地球—固体地球物理学]