论文部分内容阅读
为研究小回线源瞬变电磁法的实际探测能力,进行了现场实验。实验数据显示,小回线源对浅部地层无法识别,但晚期信号较强,对实验地点的探测深度达到了100 m,对该处的地电特征有较好的反映。同时进行了数值模拟,模拟结果与实际探测结果基本一致。研究结果表明,合理选择发射与接收线圈的匝数,可以使多匝重叠小回线装置达到理想的探测深度。
In order to study the actual detection ability of small loop source transient electromagnetic method, a field experiment was carried out. The experimental data show that the source of the small loop can not be identified in the shallow strata, but the signal in the late stage is strong. The exploration depth to the experimental site reaches 100 m, which reflects the geoelectric characteristics of this area. At the same time, the numerical simulation is carried out. The simulation results are basically consistent with the actual detection results. The results show that the reasonable selection of the number of turns of the transmitting and receiving coils can make the multi-turn overlapping small loop device reach the ideal detection depth.