• 论文
主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
煤矿冲击地压扰动响应失稳理论及应用
  • Title

    Disturbance response instability theory of rockburst in coal mine

  • 作者

    潘一山

  • Author

    PAN Yishan1,2

  • 单位

    辽宁大学环境学院辽宁工程技术大学动力灾害协同创新中心

  • Organization
    1. Environmental Engineering College,Liaoning University,Shenyang   110000,China; 2. Collaborative Innovation Center of Dynamic Disaster, Liaoning Technical University,Fuxin  123000,China
  • 摘要

    针对煤矿冲击地压问题,对扰动响应失稳理论展开研究,使其从机理、预测和防治方面形成一个完整体系。提出了煤岩体变形系统控制量、扰动量和响应量的概念,分析了冲击地压扰动响应的失稳机理及条件,认为冲击地压是煤岩变形系统在扰动下响应趋于无限大而发生的失稳,若系统处于非稳定平衡状态,则无论扰动增量大小,都会导致系统失稳。严格按扰动响应失稳理论导出了圆形巷道发生冲击地压的解析解,并得到煤岩变形系统扰动量、响应量存在临界指标,临界指标由控制量决定。从控制量、扰动量和响应量的角度对冲击地压的监测和防治进行了叙述,采动应力监测等是针对扰动量的监测,钻屑法、微震法等是针对响应量的监测,合理开采布局、开采保护层、合理留设煤柱、断顶等是针对扰动量的防治,煤层钻孔、注水、爆破、加强支护等是针对控制量的防治。

  • Abstract
    To make it a complete system of the mechanism,prediction and control of rockburst,disturbance response instability theory is deeply studied in this paper. Control quantity,disturbance quantity and response quantity of coal rock deformation system is proposed. Rockburst is concluded as a instability phenomenon of coal rock deformed system which happens when disturbance response approaches to infinite and disturbance response instability conditions of rockburst are given,if the coal and rock deformation system is in an unsteady equilibrium state,characteristic displace- ment of plastic softening deformation area will increase infinitely no matter how small the disturbance increment is. The analytical solution of rockburst happens in circular roadway is derived strictly observe disturbance response instability theory,and it indicates that there are critical indexes for disturbance quantity and response quantity,the critical inde- xes are determined by control quantity. Monitor and control of rockburst are narrated from the angle of control quanti- ty,disturbance quantity and response quantity. Monitoring methods such as mining stress monitoring are aimed at dis- turbance quantity,while monitoring methods such as drilling cuttings methods and microseismic methods are aimed at response quantity. Prevent methods such as rational mining layout,mining protective layer,rational coal pillar reten- tion,break roof are aimed at disturbance quantity,while prevent methods such as coal seam drilling,coal seam water injection,coal seam blasting,strengthening support are aimed at disturbance quantity.
  • 关键词

    煤矿冲击地压扰动响应失稳理论控制量扰动量响应量失稳临界指标

  • KeyWords

    rockburst of coal mine;disturbance response instability theory;control quantity;disturbance quantity;re- sponse quantity;instability critical index

  • 基金项目(Foundation)
    国家重点研发计划资助项目(2017YFC0804208);
  • DOI
  • Citation
    PAN Yishan. Disturbance response instability theory of rockburst in coal mine[ J]. Journal of China Coal Society,2018,43 (8):2091 -2098.
相关问题

主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会

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