瞬变电磁法在煤层构造探测中的应用研究

瞬变电磁法是一种对低阻物体敏感的探测方法，在实际应用中发现，对于一些断层或不含水陷落柱等地质异常体有明显的高阻反应，对于高瓦斯矿井来说能够有效地预测一些煤层的地质异常现象。为验证瞬变电磁方法在探测构造方面的能力，在实际探测过程中，运用两种以上瞬变电磁仪进行探测，排除现场干扰条件的影响，得到一致的探测结果。在扇形超前观测的基础上，通过烟囱简化反演，对每一测点进行多次处理分析，在某些地质条件较为合适的地方，能够明显看出高阻异常区域反映实际煤岩层的地质情况，且充分利用所掌握的地质资料和后期掘进后所得到的实际情况，总结得出瞬变电磁法可以考虑地质异常区域的高阻部分的特征分析与研究，这是瞬变电磁法在地质构造方面的探索。

Research on application of transient electromagnetic method in structure detection of coal seam

Transient electromagnetic method is a detection method sensitive to low-resistance objects.It has been found in practical applications that it has obvious high-resistance response to some faults or geological anomalies such as water-free subsidence columns，which can be effective for high-gas mines.Predict some geological anomalies in coal seams.In order to verify the ability of the transient electromagnetic method to detect the structure in the actual detection process，more than two types of transient electromagnetic instruments are used to detect，exclude the influence of on-site interference conditions and obtain consistent detection results.Based on the fan-shaped advance observation，simplified inversion through the chimney，multiple processing and analysis of each measurement point，where certain geological conditions are more suitable，it can be clearly seen that the high-resistance anomaly area reflects the actual geological conditions of coal and rock layers，and make full use of the geological data and the actual situation obtained after the later excavation，and concluded that the transient electromagnetic method can consider the characteristics analysis and research of the high-resistance part of the geological anomaly area.This is the transient electromagnetic method in the geological structure exploration.