双衬层填埋场渗漏检测电极铺设方式研究

利用高压直流电法对双衬层填埋场渗漏检测进行了研究.结果表明检测电极的铺设方式以及供电电极和参比电极的位置对漏洞定位有一定影响.在回路电流、检测电极间距、定位算法、介质分布相同的条件下,三角形的检测电极铺设方式比四边形的漏洞定位误差小,且不同点的误差波动小.当参比电极距离漏洞较近时,漏洞定位误差较大;而参比电极与漏洞的距离越大,漏洞定位误差则越小.同时,检测层的电势分布主要是由供电电极和漏洞造成,因此,参比电极的位置既要远离漏洞又要远离供电电极.

The Effect of Electrodes Lay Mode in Leakage Location of Double Liner Landfill

Leakage location of double liner landfill is carried out which is based on high voltage DC method.Analysis to the field tests shows that leakage location is effected by the detection electrodes lay mode,the position of the supply electrodes and the position of the reference electrodes.Triangle electrodes lay mode brings less leakage location error and less error fluctuation than quadrangle electrodes lay mode with equal loop current,equal space between detection electrodes,equal location algorithm and equal medium distribution.The further is the reference electrode to the leak,the less is the leakage location error. At the same time the distribution of electrical potential on the detection layer is mainly caused by the supply electrodes and the leak.So the reference electrode must be placed far from the leak and the supply electrodes.