瞬变电磁法在采空区勘探中的应用

Application of transient electromagnetic method in goaf exploration

玉泉煤业属于资源兼并重组整合高水害高瓦斯矿井,整合前井田内9号煤层已几乎全部开采(8号煤层踏空),15号煤层已进行了大范围开采,分布多处大小不等的采空区,9号、15号煤层采空区内聚集了大量老空水,对矿井安全生产存在严重威胁。首采区位于原大花沟老窑采空区内,其采空区边界及积水范围不清,影响着首采面的布置及巷道安全施工。为查明首采区内的老空区边界及积水范围,在地面采用瞬变电磁法进行了勘探,基本查明了老空区边界及积水范围,并通过了井下巷道及钻场验证,对矿井老空区积水的防治提供依据和指导。

Yuquan Coal belong to resources mergers and acquisitions integration with high water damage and high-gas coal mine,No.9 coal seam has been almost exclusively mined before integration（ No.8 coal seam is step empty） ,No.15 coal seam has been carried out large-scale mining,with distribution of several sizes of goaf,No.9 and No.15 coal seam in the goaf gathered a large number of old goaf water,there is a serious threat to mine safety production. The first mining face is located in the former flower ditch old goaf area, its boundaries in goaf and water scope are unclear,which affects the initial mining face layout and security construction of roadway.In order to identify the boundary of the old goaf water range in the first mining area,the transient electromagnetic method is used for exploration in the ground,basically identified the old goaf water boundary and the scope of water,and through the underground tunnels and drilling field validation,the mine water prevention and control of old goaf water provide the basis for guidance.