基于Soil-box土壤电阻率测试模型原理,设置了不同的砂土含水量、测试长度及电极接触面积进行试验,并分析了影响砂土交流电阻的主要因素,结果表明:测试电阻随测试长度的增加而增加,两者基本呈线性关系;随着测试面积比的增加,测试电阻逐渐降低;实际测试面小于试样截面,测试电阻或电阻率值往往是偏大的。 Based on the principle of soil-box soil resistivity test model, different sandy soil moisture content, test length and electrode contact area were set up. The main factors influencing the AC resistance of sand and soil were analyzed. The results showed that the test resistance Increase and increase, the two basically linear relationship; as the test area ratio increases, the test resistance decreases; the actual test surface is less than the sample cross section, the test resistance or resistivity values ​​are often large.