不规则测线视电阻率数据的3D反演方法

郭军旗, 范本峰, 鲁恺, 王鹏, 翟好杰

A 3D inversion method for apparent resistivity data along irregular survey lines under complex terrain

GUO Jun-Qi, FAN Ben-Feng, LU Kai, WANG Peng, ZHAI Hao-Jie

图1 不规则测线视电阻率数据的3D反演技术流程示意 a—投影坐标系下的电极分布;b—最小包围面积矩形与转换后的坐标系;c—转换坐标后的网格剖分;d—最大化y方向正则化参数后3D反演得到的电阻率模型;e—提取到的测线底部的电阻率数据;f—将e中坐标转为2D测线长度与高程的电阻率断面

Fig.1 Schematic of the 3D inversion process for resistivity data from irregular survey lines a—the electrode distribution in the projected coordinate system; b—the minimum enclosing rectangular area and the transformed coordinate system; c—the grid division after coordinate transformation; d—the resistivity model obtained from 3D inversion after maximizing the regularization parameter in the y direction; e—the resistivity data extracted at the bottom of the survey line; f—the resistivity cross-section diagram where the coordinates in e are converted into 2D survey line length and elevation