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,为高密度电阻率戍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.