煤炭工程 ›› 2019, Vol. 51 ›› Issue (5): 134-138.doi: 10.11799/ce201905031

• 研究探讨 • 上一篇    下一篇

高瓦斯薄煤层采动裂隙演化规律及瓦斯抽采技术

殷帅峰,程志恒,浦仕江,陈亮,李春元   

  1. 华北科技学院
  • 收稿日期:2019-02-27 修回日期:2019-05-01 出版日期:2019-05-20 发布日期:2019-06-10
  • 通讯作者: 程志恒 E-mail:chengzhiheng21@vip.qq.com

Mining-induced fractures evolution rule and gas drainage technology in High Gas and Thin Coal Seam

  • Received:2019-02-27 Revised:2019-05-01 Online:2019-05-20 Published:2019-06-10

摘要: 为了研究高瓦斯薄煤层采动裂隙演化规律,以鸡西矿区杏花矿薄煤层现存在工作面瓦斯难排问题为研究对象,运用了理论计算分析及数值模拟相结合的研究手段,研究结果表明:薄煤层工作面顶板环形裂隙圈的宽度较小,且在采动过程中不能使上部亚关键层破断,致使亚关键层及以上岩层中不能发育贯通裂隙而富集瓦斯。因此该采动裂隙演化规律用于指导现场瓦斯抽采工程方案的设计,现场采取了顶板抽采巷道及高位近水平钻场结合抽采方案,大大降低了工作面及回风巷的瓦斯浓度,保证了安全的生产环境,提高了矿井生产能力。

关键词: 高瓦斯薄煤层, 采动裂隙, 数值模拟, 瓦斯抽采

Abstract: Due to the high gas emission , In order to solve the problem of the existing wind measures is difficult to control and extraction of measures to reduce the gas quantity problem. This pape ruse t theoretical calculation and numerical simulation to analyze the development regularity of roof mining fissure and found that the width of annular thin coal seam working face roof fissure is smaller and can't make the upper part and the key layer breaking, above makes the key stratum and rock in the enrichment of transfixion crack gas can't development. Therefore extraction project layout should be under the key stratum fissure zone, and according to the analysis of the extraction from engineering design and achieved good application effect.

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