联合三极电阻率测深λ比值在水文、工程物探中的应用

在柳州某大厦的地基调查和桂林某地下水勘测中，使用了联合三极电阻率测深。用对称四极电阻率测深拟断面图和一维反演方法解释很难分辨覆盖层中局部低阻体引起的异常与基岩破碎或溶洞引起的异常。使用λ比值，很容易地确定了低阻体的空间位置，解决了地质问题。

United 3-pole resistivity sounding was used in ground survey for a mansion in Liuzhou city and also in certain groundwater exploration in Guilin. Anomaly induced by local low resistance body in overlying stratum and anomaly induced by bedrock failure or karst cave are very difficult to resolute. By using λ ratio the spatial post non of low resistance body can easily be determined, which solved the geologic problem.