›› 2003, Vol. 24 ›› Issue (1): 75-78.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Stability analysis of coal pillar and immediate bottom of extraction opening

WANG Wei-jun, HOU Chao-jiong   

  1. 1. Xiangtan Polytechnic University, Xiangtan 411201, China ; 2. China University of Mining and technology, Xuzhou 221008, China
  • Received:2001-11-29 Online:2003-02-10 Published:2014-08-27

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Abstract: The system consisted of main roof and hard floor is considered as a load system; the interaction and stability of coal pillar and immediate bottom of extraction opening are analyzed. The condition that immediate bottom produces slump is proposed. It is put forward that the reason of floor heave of extraction opening isn’t slump of immediate bottom but effect of horizontal stress.

Key words: extraction opening, immediate bottom, coal pillar, stability

CLC Number: 

  • TD 32
  • 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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