高密度电阻率成像法监测静水中溶质运移过程  

Monitoring the Solute Transport in Static Water by Using High-density Electrical Resistivity Tomography

作　　者：李国山[1] 周启友[2] 刘汉乐[2] 李小鹏[2] 

机构地区：[1]中冶长天国际工程有限责任公司,长沙410007 [2]南京大学地球科学系,南京210093

出　　处：《工程勘察》2008年第10期72-75,共4页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金(项目编号40371021);南京大学科学基金;教育部科学基金项目

摘　　要：本文应用高密度电阻率成像法对静水中溶质运移过程进行了二维的监测研究。通过在50cm×40cm×30cm的水槽中,高密度地布置多个电极的方法,获得了水溶液中不同时间的二维平面上的视电阻率值。利用电导率与含盐量之间的线性关系,分析了溶质在水溶液当中的运移过程。对电阻率数据采用补修法进行了成像,图像所得结果表明溶质在水槽中是一种侧向扩散和垂向扩散的叠加,证实了高密度电阻率成像法在溶质运移过程监测中的有效性,为高密度电阻率成像法广泛应用于水体污染监测创造了条件。The solute transport process in static water was monitored by using the High-density electrical resistivity tomography （ERT）. High-density electrodes were set in a water tank with 50×40×30 centimeters, and the two-dimensional resistivity distributions at different time were obtained. With the linear relationship between the electrical conductivity and the salt concentration, the process of the solute transport was analyzed. The results show that the process of solution transporting in the water tank is the superimposition of lateral and vertical diffusion, which demonstrates the effectiveness of High-density electrical resistivity tomography in the monitoring of solute transport process. It is possible for the method to be extensively used to monitor the water pollution in the field.

关 键 词：高密度电阻率成像法 电阻率 补修法 动态监测 溶质运移 

分 类 号：P631.3[天文地球—地质矿产勘探]