• 中文核心期刊
  • 中国科技核心期刊
  • RCCSE中国核心学术期刊

厚硬冲击煤层宽煤柱诱发冲击地压机理及防治

刘伟建, 马斌文

刘伟建, 马斌文. 厚硬冲击煤层宽煤柱诱发冲击地压机理及防治[J]. 煤矿安全, 2020, 51(3): 148-152.
引用本文: 刘伟建, 马斌文. 厚硬冲击煤层宽煤柱诱发冲击地压机理及防治[J]. 煤矿安全, 2020, 51(3): 148-152.
LIU Weijian, MA Binwen. Mechanism and Prevention of Rock Burst Induced by Wide Coal Pillar in Thick Hard Coal Seam[J]. Safety in Coal Mines, 2020, 51(3): 148-152.
Citation: LIU Weijian, MA Binwen. Mechanism and Prevention of Rock Burst Induced by Wide Coal Pillar in Thick Hard Coal Seam[J]. Safety in Coal Mines, 2020, 51(3): 148-152.

厚硬冲击煤层宽煤柱诱发冲击地压机理及防治

Mechanism and Prevention of Rock Burst Induced by Wide Coal Pillar in Thick Hard Coal Seam

  • 摘要: 针对呼吉尔特矿区厚硬冲击煤层宽煤柱诱发冲击地压现象,通过现场实测和数值模拟,分析了宽煤柱垂直应力分布特征,通过理论分析,揭示了宽煤柱发生冲击的结构条件;基于冲击地压“三因素”机理,研究了宽煤柱诱发冲击地压机理:在侧向支承压力和工作面采动应力叠加影响下,具有冲击倾向性的宽煤柱应力高度集中,当其达到极限强度发生卸载时,由于煤柱体刚度与顶板岩层刚度相近,造成煤体运动速率很大,呈现冲击地压显现。在此基础上,提出了小煤柱护巷和断顶爆破等措施降低煤柱应力、采用大直径钻孔卸压和煤层注水等措施改变煤体刚度的防治策略,针对311103工作面提出了采取断顶爆破和大直径钻孔的组合防治方法,宽煤柱应力集中程度出现明显降低,防治效果较为显著。
    Abstract: Aiming at the phenomenon of rock burst induced by wide coal pillars in thick hard coal seam in Hujierte Mining Area, the distribution characteristics of vertical stress of wide coal pillar has been analyzed by means of field measurement and numerical simulation. The structural condition of rock burst induced by wide coal pillars has been revealed by means of theoretical analysis. Based on the “three factors” mechanism of rock burst, the rock burst mechanism of wide coal pillar are studied and the results are as follows: accumulated lateral support stress and the advanced abutment stress of working face, the stress of the wide coal pillar is highly concentrated. When the ultimate strength of the coal is unloaded, the coal cylinder body is moving at a high rate due to the stiffness of the coal pillar and the stiffness of the roof rock. On this basis, the prevention strategies that reducing the stress of coal pillar, such as small coal pillar roadway protection and broken roof blasting measures, and reducing the stiffness of coal body, large diameter boreholes and coal seam water injection are proposed. The combined prevention methods, broken roof blasting and large diameter boreholes, are proposed to reduce the stress concentration of wide coal pillar, and the control effect is more significant.
  • [1] 吴祥业.神东矿区重复采动巷道塑性区演化规律及稳定控制[D].北京:中国矿业大学(北京),2018.
    [2] 齐庆新,欧阳振华,赵善坤,等.我国冲击地压矿井类型及防治方法研究[J].煤炭科学技术,2014,42(10): 1-5.
    [3] 王存文,姜福兴,王平,等.煤柱诱发冲击地压的微震事件分布特征与力学机理[J].煤炭学报,2009,34(9):1169-1173.
    [4] 吕涛,陈运,闫振斌.蒙陕地区冲击地压防治策略探讨[J].煤炭工程,2018,50(6):105-107.
    [5] 瞿孝昆,姜福兴,王慧涛,等.采空区煤柱失稳诱发下煤层冲击机理研究[J].采矿与安全工程学报,2017, 34(6):1134-1140.
    [6] 王涛,由爽,裴峰,等.坚硬顶板条件下临空煤柱失稳机制与防治技术[J].采矿与安全工程学报,2017,34(1):54-59.
    [7] 杨伟利,姜福兴,温经林,等.遗留煤柱诱发冲击地压机理及其防治技术研究[J].采矿与安全工程学报,2014,31(6):876-880.
    [8] 王浩,赵毅鑫,牟宗龙,等.矿震扰动下采区煤柱应力偏量集中区诱冲机制及防治方法[J].中国矿业大学学报,2017,46(6):1202-1210.
    [9] 曹建涛,来兴平,闫瑞兵.急斜煤层残留高阶段煤柱动力失稳机理研究[J].采矿与安全工程学报,2018,35(1):133-139.
    [10] 齐庆新,窦林名.冲击地压理论与技术[M].徐州:中国矿业大学出版社,2008.
    [11] 刘金海,姜福兴,王乃国,等.深井特厚煤层综放工作面区段煤柱合理宽度研究[J].岩石力学与工程学报,2012,31(5):921-927.
    [12] 耶格,库克.岩石力学基础[M].北京:科学出版社,1981.
    [13] 张俊文,刘畅,李玉琳,等.错层位沿空巷道围岩结构及其卸让压原理[J].煤炭学报,2018,43(8):2133.
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  • 发布日期:  2020-03-19

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