Original document(10 pages)  中文版
    The present invention features that by means of the measurement of the thickness and the initial gas-releasing expansion energy index of soft substratum in the coalbed at front of coal face, it can be used to judge whether dynamic phenomenon will occur when the coalbed is cut comprehensively, and which of the three phenomena will occur. With the accurate measurement of initial gas-releasing expansion energy index, which represents the comprehensive effect of crustal stress, original coalbed strength, and gas pressure on projecting course, the present invention has great predication value.
Application Number
申请号		 94111374 Application Date
申请日		 1994.06.29
Title 名称 Crossdrift coal-cutting dynamic phenomenon predicting method and apparatus
Publication Number
公开号		 1117113 Publication Date
公开日		 1996.02.21
Approval Pub. Date Granted Pub. Date
International Classification 分类号 E21F17/00
Applicant(s) Name
申请人		 China Mining Univ.
Address 地址 221008
Inventor(s) Name 发明人 Jiang Chenglin, Yu Qixiang
Attorney & Agent 代理人 LI ZHONGHUA

  
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