大倾角松软厚煤层综放开采放煤工艺研究

doi:10.11799/ce201311029

COAL ENGINEERING ›› 2013, Vol. 45 ›› Issue (11): 87-89.doi: 10.11799/ce201311029

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Study on Technological Parameters of Top-Coal Caving of Fully Mechanized Mining with Steeply Dipping Loose Coal Seam

Received:2012-12-04 Revised:2012-12-27 Online:2013-11-10 Published:2013-11-11

Abstract

Abstract:

Based on geological condition of Top-Coal Caving of Fully Mechanized Mining with Steeply Dipping Loose thick Coal Seam, The impact of three ways top-coal caving of the Coal Caving Direction,order and interval of top-coal caving, single and double round of top-coal caving on the gangue flow pattern, coal gangue law and the Coal Caving Effect by means of the laboratory rock simulation, The PFC numerical simulating studies top-coal caving release rate under different coal caving step distance, Uplink Double Round interval caving, 0.6 meters coal caving step distance of Rational Technological Parameters of Top-Coal Caving is obtained。Average recovery ratio of coal face during the course of project study is 80.3%, Maximum recovery ratio is 84%,The safe and efficiency is realized,Good effects of technology and economy are achieved

Key words: Steeply Dipping, Loose Coal, thick Coal Seam, Top-Coal Caving of Fully Mechanized Mining, laboratory rock simulation, PFC numerical simulating, Technological Parameters of Top-Coal Caving

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URL: http://www.coale.com.cn/EN/10.11799/ce201311029

http://www.coale.com.cn/EN/Y2013/V45/I11/87

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Study on Technological Parameters of Top-Coal Caving of Fully Mechanized Mining with Steeply Dipping Loose Coal Seam

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