音频电透视与瞬变电磁法联合探测唐家会煤矿底板奥灰水的应用效果

Application Effect of Audio Electric Perspective and Transient Electromagnetic Method Combined Detection of Ordovician Limestone Water in the Bottom Plate of Tangjiahui Coal Mine

煤矿工作面底板突水严重威胁了安全高效生产,如何准确有效地预先探明底板隐伏异常含水体是煤矿防治水的关键。大量现场经验表明,单一的工程物探方法因其客观存在的局限性,往往难以满足复杂的生产需求。综合物探法具有数据丰富、方法互补等优点从而得到广泛应用,对煤矿防治水具有重大意义。以唐家会煤矿62103工作面为例,提出了矿井瞬变电磁法和音频电透视相结合的综合物探方法,对62103工作面底板地质情况进行了综合勘察分析,并利用定向孔钻进技术进行了验证。综合物探法探测到的工作面1号和2号低阻异常平面位置基本一致,分析认为1号低阻异常反应为煤层底板下岩性富水性较强所致、发育深度在底板下0-80m范围内,2号异常区域为裂隙较为发育所致、发展深度集聚于底板下侧的0-40m左右。定向孔钻遇1、2号异常体均存在出水量异常增大的现象,表明综合物探法探测结果具有较高的准确度。矿井瞬变电磁法和音频电透视相结合的综合物探法为煤矿安全高效生产提供更为准确的水文地质参数,是未来煤矿防治水安全的重点发展方向。

The water inrush from the coal mine working face floor seriously threatens safe and efficient production.The key to preventing and controlling water in coal mines is to accurately and effectively detect the hidden abnormal water content in the floor in advance.A large amount of on-site experience has shown that a single engineering geophysical method often fails to meet complex production needs due to its objective limitations.The comprehensive geophysical method has the advantages of rich data and complementary methods,and has been widely applied,which is of great significance for water prevention and control in coal mines.Taking the 62103 working face of Tangjiahui coal mine as an example,a comprehensive geophysical method combining transient electromagnetic method and audio electric perspective was proposed.The geological conditions of the bottom plate of the 62103 working face were comprehensively surveyed and analyzed,and the directional drilling technology was used for verification.The positions of the low resistance anomaly planes detected by the comprehensive geophysical method in the first and second working faces are basically consistent.Analysis suggests that the low resistance anomaly in the first is caused by strong water rich lithology under the coal seam floor,with a development depth of 0-80m below the floor.The abnormal area in the second is caused by well-developed fractures,with a development depth concentrated at around 0-40m below the floor.During directional drilling,there was an abnormal increase in water output when encountering abnormal bodies 1 and 2,indicating that the detection results of the comprehensive geophysical method have high accuracy.The comprehensive geophysical exploration method combining transient electromagnetic method and audio electric perspective in mines provides more accurate hydrogeological parameters for safe and efficient production in coal mines,and is a key development direction for future water safety prevention and control in coal mines.