灰岩巷道中矿井瞬变电磁法探水效果分析  

Analysis on Water Detection Effect with Mine Transient Electromagnetic Method in Limestone Roadway

作　　者：吴超凡[1] 邱占林[1] 金其中[1] 

机构地区：[1]龙岩学院资源工程系,福建龙岩364012

出　　处：《矿业安全与环保》2013年第5期67-70,共4页Mining Safety & Environmental Protection

基　　金：国家"十二五"科技支撑计划课题(2011BAK07B02);福建省自然科学基金项目(2010J01262);龙岩市科技计划项目(2011LY53)

摘　　要：查明掘进巷道前方含水体的具体位置及其赋水性,可以指导煤矿的安全生产与建设。矿井瞬变电磁法作为一种非接触式探测技术在水害探查中发挥着重要的作用。介绍了瞬变电磁场响应特征,阐述了全空间视电阻率计算以及时深转换等处理方法,并在河南某矿灰岩巷道跟踪超前探测试验中得到应用,2次探测均采用半圆形观测系统,分别探测巷道顶板上方45毅、顺巷道掘进、巷道底板下方45毅共3个方向的视电阻率,经后期钻探验证,探测结果与实际情况基本吻合,效果较好。To find out the specific location and water abundance of the water-bearing body in front of the excavating roadway can guide the safety in coal mine production and construction. The mine transient electromagnetic method, as a non-contact detection technology, plays an important role in the detection of mine water disasters. This paper systematically described the response characteristics of the transient electromagnetic field and elaborated processing method of full-space computation of apparent resistivity and the time-depth conversion. The mine transient electromagnetic method has been applied in the follow-up advance detection of a limestone roadway in a coal mine in Henan Province, the semicircular observation system was used for the secondary detections, the apparent resistivity in three directions was detected respectively, i. e. in 45° direction above the roadway roof, along the roadway excavation direction and in 45° direction below the roadway floor. The verification by the late drilling showed that the detection results basically tallied with the actual situation and the detection effect was better.

关 键 词：灰岩巷道 矿井瞬变电磁法 水害 视电阻率 

分 类 号：TD745.21[矿业工程—矿井通风与安全]