Detection technology and application of electromagnetic method for hidden danger of water gushing at coal face  

作　　者：SHI Xian-xin YAN Shu CHEN Ming-sheng FU Jun-mei 

机构地区：[1]Xi＇an Research Institute, China Coal Research Institute, Xi＇an 710054, China [2]School of Electronic and Information Engineering, Xi＇an Jiaotong University, Xi＇an 710049, China [3]School of Computer Science and Telecommunication Engineering, Jiangsu University, Zhenjiang 212013, China

出　　处：《Journal of Coal Science & Engineering(China)》2009年第2期197-205,共9页煤炭学报（英文版）

基　　金：Supported by the National Basic Research of China(2006CB202207);the National Natural Science Foundation of China(40674060)

摘　　要：The principles, methods, technologies and application effects of several electromagnetic methods for the detection of the hidden danger of water gushing at the coal face were introduced. Also, emphasis was laid on expounding the methods, principles and effects of down-hole detections by electric transmission tomography and transient electromagnetic method. The potential of point power supplied in the underground homogeneous semi-space, as well as the response to a low-resistivity abnormal body in the homogeneous semi-space, was simulated by adopting 3-D finite element method to interpret the basic theory of the electric transmission tomography. The results of actual measurement show that the mine electromagnetic method is sensitive to water-bearing low-resistivity bodies and can play a unique role in detecting the hidden danger of water gushing at the coal face.The principles,methods,technologies and application effects of several electromagneticmethods for the detection of the hidden danger of water gushing at the coalface were introduced.Also,emphasis was laid on expounding the methods,principles andeffects of down-hole detections by electric transmission tomography and transient electromagneticmethod.The potential of point power supplied in the underground homogeneoussemi-space,as well as the response to a low-resistivity abnormal body in file hemogeneoussemi-space,was simulated by adopting 3-D finite element method to interpretthe basic theory of the electric transmission tomography.The results of actual measurementshow that the mine electromagnetic method is sensitive to water-bearinglow-resistivity bodies and can play a unique role in detecting the hidden danger of watergushing at the coal face.

关 键 词：hidden trouble of water gushing electric transmission tomography mine transient electromagnetic method coal face high-density resistivity method 3-D finite element simulation 

分 类 号：TD327.2[矿业工程—矿井建设] P631.325[天文地球—地质矿产勘探]