高密度电法对复杂地质条件下堤防隐患探测的数值模拟研究

Numerical simulation of dike hidden danger detection under complex geological conditions by electrical resistivity tomography

为解决复杂地质条件下堤防潜在隐患区识别难度大的问题。采用温纳、偶极和梯度电极装置对位于复杂地质体的导水通道进行高密度电法层析成像的数值模拟研究,并将三种电极装置数据融合进行模拟,同时计算各个装置的模型分辨率。模拟结果表明,梯度装置具有良好的横向分辨率,偶极装置有较好的垂向分辨率,数据融合的装置结合了三种装置的优点,对复杂地质条件下的堤防隐患区定位精度高。

In order to solve the difficult problem of identifying potential hidden danger areas of dikes under complex geological conditions.Use Warm nano,dipole and gradient configurations to conduct numerical simulation of electrical resistivity tomography on water channels located in complex geological bodies,and fusion of three electrode configurations to simulate,and calculate the model resolution of each configuration.The simulation results show that the gradient configuration has good lateral resolution,and the dipole configuration has good vertical resolution.The fused data combines the advantages of the three configuration,and has high positioning accuracy for the hidden danger area of the embankment under complex geological conditions.