›› 2007, Vol. 28 ›› Issue (8): 1577-1580.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on characters of surface subsidence in mining steep and thick seams by means of solid experiment

SHAO Xiao-ping, SHI Ping-wu, ZHAO Guo-liang, WANG Gui-rong   

  1. College of Resources and Energy, Xi’an University of Science and Technology, Xi’an 710054, China
  • Received:2005-08-27 Online:2007-08-10 Published:2013-10-15

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Abstract: Characters of surface subsidence have been researched by means of large solid experiment frame in mining horizontal section top coal caving in steep seams. It is discovered that the subsidence of steep seams is different from subsidence of gently inclined seams. The holes which appear initially will be transfixed and form surface collapse pit in process of mining steep seams. Collapse degree of rocks near roof is larger than rocks near bottom. The surface subsidence has repeating characters; and collapse rock is a declined step distribution as mining inferior sections. Collapse pit with deep groove will be formed at last.

Key words: horizontal section top coal caving, layer cranny, transfixion in the middle of holes, declined step distribution, collapse pit with deep groove

CLC Number: 

  • TD 327
  • 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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