首页|Discussion of the indexes of nonoutburst coal seam upgrade and its corresponding critical values

Discussion of the indexes of nonoutburst coal seam upgrade and its corresponding critical values

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In view of the measurement difficulties of indexes recommended by the 50 Items Experience of Coal Mine Gas Prevention in the process of the nonoutburst coal seam upgrade, this paper took the No.8 coal seam of Huainan Mining Group as re-search object. Discussed the suitability of indexes and corresponding critical values, put forward method in determining the indexes and its critical values by analysis and inves-tigation of the gas geological condition and the-spot tracking near position where an outburst occurred combined with laboratory experiment, and established the indexes and its critical values of nonoutburst coal seam upgrade in No.8 coal seam of Huainan Mining Group. The results show that it is suitable to take gas content and tectonic soft coal thickness easily to gain in routine production as primary upgrade indexes that its critical values are 7.5 m3/t and 0.8 m, respectively. In addition, take f vatue and Δp value as auxiliary indexes.

nonoutburst coal seam upgrademethods and indexes systemgas geologytectonic soft coal thicknessgas content

WEI Jian-ping、LIU Yan-wei、LIU Ming-ju、MENG Lei

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School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China

School of Civil En-gineering, Henan Polytechnic University, Jiaozuo 454000, China

National Key Basic Research Development Program of China (973 program)National Key Technologies Re-search and Development Program of China during the Eleventh Five-Year Plan Period教育部长江学者和创新团队发展计划

2005CB2215012006BAK03B01IRT0618

2009

10.1007s12404-009-0408-y

中国煤炭(英文版)
煤炭信息院

中国煤炭(英文版)

ISSN：1006-5318
年,卷(期)：2009.15(4)
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