电渗试验中土体电阻变化规律探究

电渗法作为一种新兴的地基处理方式,能加快土体的排水固结,提高土体强度。该文通过设置7组试验,研究电渗试验中土体电阻的变化规律。试验结果表明,随电渗时间的延长,土体总电阻值呈现出先减小后增大的变化趋势,这种变化规律主要取决于靠近阳电极处土体电阻的变化。并且,土体电阻的大小与干密度和含水率均有关系,具体表现为土体的干密度越大,试验后阳电极处土体的含水率降低越多;在一定范围内土体的含水率越高,电阻越小。

As an emerging foundation treatment method,electroosmosis can accelerate the drainage and consolidation of soil and improve soil strength.In this paper,7 groups of tests were set up to study the change laws of soil resistance during electroosmotic tests.The test results show that with the extension of electroosmosis time,the total resistance of the soil shows a change trend of decreasing first and then increasing.This change rule mainly depends on the change of the resistance of the soil near the anode electrode.Moreover,the resistance of the soil is related to both dry density and water content.The specific performance is that the greater the dry density of the soil,the more the water content of the soil at the anode electrode decreases after the test;the higher the water content of the soil within a certain range,the smaller the resistance.