不同含盐量饱和盐渍土电阻率试验

A Study of Resistive Experiment on Saturated Saline Soil with Different Salinity

为了研究饱和盐渍土电阻率特性从而应用电阻率反算土体含盐量,通过拟合公式,可以在已知或测量电阻率的情况下反算该土体的含盐量。判断土体主要含盐的种类,并且对不同含盐量氯盐渍土和硫酸盐渍土的电阻率进行了试验;通过数据拟合,得到饱和状态下氯盐和硫酸盐电阻率与含盐量变化的拟合公式,并对其电阻率进行比较,得出结论:在饱和状态下,在相同含盐量时氯盐渍土的电阻率大于硫酸盐渍土,氯盐渍土的电流变化率也大于硫酸盐渍土。

In order to study the relationships between the resistivity and the salinity of chloride saline soil and of sulphate saline soil with different salinity under the condition of saturation state,the resistivities of chloride saline soil and sulphate saline soil with different salinity are tested.Through data fitting,a fitting formula of the resistivities of chloride saline and sulphate saline and the variation of salinity are obtained under the condition of saturated state.Compared with their resistivities the results show that the resistivity of chloride saline soil is bigger than that of sulphate saline soil under the condition of saturation state with the same salinity and output voltage,so is the rate of current change.This study is a salutary lesson for the research on electro-osmosis method for saline soil treatment.