直流电阻率法检测垂直铺膜深度问题研究

为了研究垂直铺塑防渗工程防渗膜检测中不同铺膜深度的电测深曲线特性,通过室内试验对若干组饱和砂土层垂直铺设不同深度防渗膜的简化模型运用直流电阻率法进行测量。结果表明,膜上土表处测点垂直膜走向测线的电测深曲线在每一层土的探测范围内表现出等梯度变化的特征,且各段的梯度与膜的铺设位置有密切的对应关系。

Preliminary study on the problem of detecting the depth of vertically laying geomembrane with DC resistivity method

In order to study the characteristics of electric sounding curve corresponding to different laying depth of the membrane in detection of impervious membrane in Vertical Laying plastic Film project, several groups of indoor experiment with different laying depth of membrane paving inside the saturated soil using DC resistivity method were taken. It was found that the electrical sounding curves of the measurement of the point on the surface of the sand above the membrane along the cross-section of the membrane character as follows:the apparent resistivity corresponding to the detection range of each electrical layer changes with constant gradient which has a close relationship with the laying position of the membrane.