煤矿井下瞬变电磁超前探测技术探讨与应用  

Discussion and Application of the Advance Detection with Transient Electromagnetic Technology in Coal Mines

作　　者：李鹏飞 贾子龙[2] 张富明 赵兴辉 LI Pengfei;JIA Zilong;ZHANG Fuming;ZHAO Xinghui(Coal Geological Geophysical Exploration Surveying&Mapping Institute of Shanxi Province,Jinzhong 030600;Beijing Geothermal Research Institute,Beijing 102218)

机构地区：[1]山西省煤炭地质物探测绘院,山西晋中030600 [2]北京市地热研究院,北京102218

出　　处：《城市地质》2020年第4期456-461,共6页Urban Geology

基　　金：晋普山煤矿井下90113工作面瞬变电磁超前探测、山西榆次官窑煤业有限公司井下瞬变电磁超前探测。

摘　　要：煤矿巷道掘进及工作面回采时,若前方存在富水区,易发生突水事故。采用煤矿井下瞬变电磁超前探测技术,可以探测煤矿掘进头及工作面前方隐伏构造的富水性。煤矿井下瞬变电磁超前探测技术通过观测电磁感应二次场进行探测,其具有工作效率高、线框布设灵活、横向分辨率较高的特征。针对不同的地质条件和工作任务,选择适合的施工装置和施工参数。掘进头超前探实例中,超前探圈出的顺层富水区钻孔得以验证,在工作面超前探实例中,煤层中注水区与超前探测成果一致,说明了煤矿井下应用瞬变电磁超前探测技术探测富水区是有效的。Water inrush is easy to happen if there is water-enriched area in front of the coal mine during driving and working face mining.By using the advance detection with transient electromagnetic method in coal mines,the water-enriched property of the hidden structure in front of the mining head and working face can be detected.By observing the secondary field of electromagnetic induction,the technology has the characteristics of high efficiency,flexible layout of wire frame and high horizontal resolution.According to different geological conditions and work tasks,it needs selecting suitable construction equipment and construction parameters.In the case of advance exploration in the driving head,the drilling in the water-enriched area along the seam circled by advance exploration is verified.In the case of advance exploration in the working face,the results of water injection area in the coal seam are consistent with those of advance exploration,which shows the effectiveness of the underground transient electromagnetic technology for the water-enriched area.

关 键 词：瞬变电磁 超前探 掘进头 工作面 

分 类 号：P631.325[天文地球—地质矿产勘探] TD745[天文地球—地质学]