利用三维地震及瞬变电磁法探查老窑、采空区

煤矿采空区富含水或瓦斯而对煤矿安全生产构成事故隐患，三维地震勘探技术可查明落差5m以上的断层、直径大于20m的陷落柱，控制采空区边界，其平面位置误差不大于20m，是探测煤层采空区边界行之有效的手段。瞬变电磁法可查明含水地质体如岩溶洞穴与通道、煤矿采空区、深部不规则水体等。利用三维地震结合瞬变电磁法探查显德旺矿老窑、采空区破坏范围及积水情况，取得了可喜的成果。

Old Workings and Gob Area Prospecting by the Use of 3D Seismic and Transient Electromagnetic Method

Since the rich water and gas content in the gob area threaten coalmine safe production,constitute hidden trouble of accidents.The 3D seismic prospecting technique can locate faults with throw >5m,subsided columns with diameter >20m,gob area boundary with position error on plan <20m,thus a tried and true means to prospect coal seam gob areas.Transient electromagnetic method can find out water bearing geologic bodies such as karstic caves and channels,coalmine gob areas and deep part irregular water bodies.To use integrated 3D seismic and transient electromagnetic method prospect old workings,gob area boundary and ponding in the Xiandewang coalmine has acquired delightful results.