垃圾填埋场人工衬层渗漏的电学法检测研究

基于电学法无二次污染、操作易掌握和费用低等特点,提出了4种用于垃圾填埋场人工衬层渗漏检测的电学方法:电阻法、电流法、感应电势差法和远距离参比电极感应法。其原理都是利用垃圾和土壤有一定的水分而具有的导电性,以及一般用作人工衬层(俗称土工膜)的高密度聚乙烯绝缘材料。通过实验指出电阻法只能检测到是否有漏洞,不能判断漏洞的位置;电流法是一种一次性方法,只能判断一次是否有漏洞,也不能够定位漏洞;感应电势差法有很好的发展前景;远距离参比电极感应法的检测效果非常好。 

Study on Electrical Methods to Detect Leaks on Landfill Geomembrane Liners

According to characteristics of electrical methods of no secondary pollution,easy operation and low operation fee,four electrical methods,(i.e.)resistance method,current method,inductive potential method and inductive method with remote referred electrode,were put forward to detect leaks on manual liners in landfill.The primary theory is that soil and wastes of landfill are conducting materials because of their moisture and high-density polyethylene is insulated material used as manual liner(geomembrane) in landfill.Based on the research,it is pointed out that leaks can be detected by resistance method but without indicating of their locations;current method is a one-time method,which can not locate leaks;inductive potential method has good applying future and inductive method with remote referred electrode is perfect.