›› 2007, Vol. 28 ›› Issue (2): 343-346.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of influence of weak weak terrain thicknesses on feature of strata roof

HUANG Xu1, MA Nian-jie1, JIA An-li1, CHENG Yan-hui2, SUN Ji-chao3   

  1. 1. School of Resoures and Safety Engineering, China University of Mining and Technology, Beijing 100083, China; 2. City Management Department, Hunan City University (Chaoyang Campus), Yiyang 413000, China; 3. School of Mechanics and Civil Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China
  • Received:2005-03-16 Online:2007-02-10 Published:2013-08-28

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Abstract: Roof collapse accidents, potentially in the association with lithology and occurrence of roof terrane etc., are termed to be one of the most severe calamities in the coal mine exploitation activities. The thickness of weak terrain as one of the most critical elements in roof collapse accidents is discussed in detail here. After carrying out the mechanics analysis for roof failure in coal mines employing rock failure process analysis system (RFPA2D) developed by Northeast University, this paper conducts subsequently the numerical calculation for varying roof failure instances under different weak terrain thicknesses and probes into the impact of weak terrain thicknesses on laneway stability, concluding in the situation of different weak terrain thickness both failure processes after exploiting laneways and shapes formed ultimately by roof collapse. Roof supporting methods for weak terrain in different thicknesses are also listed finally. It is believed that conclusions from this paper are of significant reference not only to construction on site but also for experiments.

Key words: numerical simulation, weak terrain, stratiform roof, stability

CLC Number: 

  • TU 452
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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