利用高密度电阻率法进行断层破碎带探查的数值模拟方法

Numerlcal Simulation Method in the Exploration of Faultage with High Density Resistivity

为明确不同条件下断层破碎带的异常特征 ,提高高密度电阻率法 (HDR)的应用效果 ,该文在大量探测实例的基础上提出断层破碎带的地电模型 ;用有限元数值模拟的方式计算出不同地表电性层的情况下 ,高、低阻断层破碎带在不同电测的异常特征并确定最佳采集装置形式 ;并正演模拟倾斜断层的异常分布形态 。

In order to determine the abnormal character of fa ultage under different conditions and to enhance the applying effect ness of HDR, this paper gives the electric models of faultages on the basis of many expl orative examples. By analyzing the abnormal characters calculated by finite elem ent method (FEM) of different faultages with different arrays, we confir m the best array when the first electricity layer is different.This text also gi ves the abnormal characters of lean faultages by FEM and the data processing met hods which can improve the resolution of the apparent resistivity section.