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Determination of Coal Mine Gob Edges by EH-4 System

XU Bai-shan,WANG En-de,CHEN Qing-kai,LI Wei-qunSchool of Resources & Civil Engineering,Northeastern University,Shenyang 110004,China.  
Emphasizing the importance of controlling geological disaster in coal mine,the features of gob edges in highly mechanized mine and control of geological disaster due to mining are analyzed geophysically.Practical exemplifications show that when the water-richened gob causes tensile fissures,the target geographical body presents good electric conductivity,damaging laterally the homogeneity of its electrical properties and making longitudinally its gradation abnormal.So,in obviously undulated mountain area,electromagnetic surveying is efficient to poor geographical bodies and the further investigation of their lateral structure.
【Fund】: 国家“十五”科技攻关项目(2001BA310A09)
【CateGory Index】: TD167
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