摘要
将地面瞬变电磁法应用于煤矿井下 ,探测矿井下采煤工作面顶、底板的含水构造。对矿井瞬变电磁法的基础理论进行了分析 ,对矿井瞬变电磁法探测工作面顶。
The water-bearing structure developed widely on the roof and footwall of mining face can be a major hazardous factor of water bursting in the mining shaft because of the redistribution of ground stress and destruction of waterproof stratum during recovery process. The investigation shows that it is an effective measurement to use ground transient electromagnetic method for detecting the structures on the roof and footwall of underground mining face and to find anomalous objects in coal mine. The simple principle of the ground transient electromagnetic measurement is analyzed and a suitable assembled equipment form with multiple circles and small loops is selected to detect water-bearing structures in different locations of underground mining face aiming at current frequency occurring hazards of water bursting in coal mine.
出处
《江苏地质》
2004年第4期238-242,共5页
Jiangsu Geology
关键词
矿井
瞬变电磁法
顶板
底板
含水构造
Mining shaft
Ground transient electromagnetic method
Roof
Footwall
Water structures
