电极铺设方式对填埋场渗漏检测定位的影响

利用高压直流电法,对单HDPE膜衬层模拟垃圾填埋场检测电极采用蜂窝状和栅格状2种铺设方式对漏洞定位影响进行了研究,通过2种算法进行了定位误差的比较.结果表明,在电极间距为1m时,蜂窝状电极铺设方式漏洞定位误差是栅格状误差的53%,但电极数量增加了13%.第1种算法的误差小且波动较小.检测电极采用蜂窝状铺设方式,电极间距为1m,回路电流为100mA时,漏洞定位误差不超过15cm.

The influence between two kinds of examinating measure electrodes paving patterns in high voltage DC method for examinating measure leak in the simulative membrane

The leak location influence was studied utilizing high voltage DC method in simulative landfill site membrane lining of single HDPE adopting two kinds of paving pattern of hexagonal and grid. The location error was compared through two arithmetic methods. At 1m distance between electrodes, the leak location error in the hexagonal electrodes paving pattern was 53% of the gird error; but the number of electrodes increased 13%. No.1 airthmetic method had less error and less wave. The leak location error was less than 15cm when the examinating measure electrodes adopted hexagonal paving pattern, the distance between electrode was 1m, the electric current in circuit was 100mA.