不同煤层掘进工作面瞬变电磁法探测应用研究

煤矿井下瞬变电磁法成为煤矿井下超前探测工作的重要手段,在矿井水害预测预报上发挥着很大的作用。随着矿井上组煤层资源的逐渐枯竭,煤矿开采资源逐渐延伸向下组煤层。同一井田范围内同煤层及其顶底板的岩性特征一般相差不大,瞬变电磁法在同煤层施工过程中接收到的物理背景场较为接近;而不同煤层及其顶底板岩性特征通常会有较大的差别,瞬变电磁法在不同煤层施工过程中会接收到差别较大的物理背景场。当矿井存在多煤层开采时,通过大量数据研究瞬变电磁法在不同煤层巷道探测中的响应特征规律,分析并掌握不同煤层条件对瞬变电磁法探测结果的影响,能够提高瞬变电磁法在多煤层探测成果的准确性。

Research on application of transient electromagnetic method in detection of driving face in different coal seams

The transient electromagnetic method in underground coal mines has become an important means of advance detection in underground coal mines，and it plays a very important role in the prediction and prediction of mine water disasters.With the gradual exhaustion of coal seam resources in the upper group of mines，coal mining resources gradually extend to the lower coal seams.The lithological characteristics of the same coal seam and its roof and floor within the same mine field were generally not much different.The physical background field received by the transient electromagnetic method during the construction of the same coal seam was relatively close；while the lithological characteristics of different coal seams and their roof and floor were usually，there is a big difference.The transient electromagnetic method would received a different physical background field during the construction process of different coal seams.When there were multiple coal seams in the mine，a large amount of data was used to study the response characteristics of the transient electromagnetic method in the detection of different coal seams，analyzed and grasped the influence of different coal seam conditions on the detection results of the transient electromagnetic method，which could improve the transient electromagnetic method accuracy of detection results for multiple coal seams.