瞬变电磁法感应电压场与B场探测效果的数值计算对比分析

李展辉, 杨淼鑫, 曹学峰

A numerical study of transient electromagnetic sounding effect using the induced voltage and the B field data

LI Zhan-Hui, YANG Miao-Xin, CAO Xue-Feng

图21 针对图20中感应电压数据和Bz数据计算得到的全时视电导率拟二维剖面 a—由感应电压数据计算的全时视电导率拟二维剖面;b—由Bz数据计算的全时视电导率拟二维剖面;c—t=0.01 ms时刻感应电压与Bz场视电导率随水平距离的变化曲线;虚线表示第4、5、6号异常体在x方向的具体位置;蓝色倒三角形和红色倒三角形分别为对应视电阻率曲线的峰值

Fig.21 The all-time apparent conductivities calculated from the induced voltage data and Bz data shown in Fig.20. a—the all-time apparent conductivities calculated from the induced voltage data;b—the all-time apparent conductivities calculated from the Bz data;c—shows the apparent conductivity curves of the induced voltage and Bz field over x position;the dashed lines delineated the positions of the abnormal bodies 4~6 in x direction;the blue and red inverted triangles labeling the peaks of the corresponding curves