中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (7): 99-104.doi: 10.16265/j.cnki.issn1003-3033.2017.07.018

• 安全工程技术科学 • 上一篇    下一篇

围岩应力回迁诱发滞后性冲击与突出现象机制研究

朱权洁1 高级工程师, 尹永明2, 刘金海1 副教授, 温经林3, 石建军1 副教授   

  1. 1 华北科技学院 安全工程学院,北京 101601;
    2 中国安全生产科学研究院 信息中心,北京 10012;
    3 北京科技大学 土木与环境工程学院,北京 100083
  • 收稿日期:2017-03-03 修回日期:2017-05-25
  • 作者简介:朱权洁 (1984—),男,湖北孝感人,博士,高级工程师,主要从事矿山微震监测技术、煤岩动力灾害的监测与防治工作。Email:youyicun2008@163.com。
  • 基金资助:
    国家自然科学基金资助(51604115;51504096);河北省省级科技计划项目(16275512);廊坊市科学技术研究与发展计划项目(2016013116);河北省自然科学基金资助(E2016508003)。

Mechanism of hysteretic rockburst and outburst induced by surrounding rock stress returning

ZHU Quanjie1, YIN Yongming2, LIU Jinhai1, WEN Jinglin3, SHI Jianjun1   

  1. 1 School of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, China;
    2 Information Center,China Academy of Safety Science and Technology, Beijing 100012, China;
    3 School of Civil and Environment Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2017-03-03 Revised:2017-05-25

摘要: 为探究卸压区域再次应力集中诱发异常冲击与突出事故的发生机制,以河南某矿25110工作面为例,结合河南2起典型事故,提出应力回迁概念。利用理论分析、数值模拟、现场实测等方法,研究应力回迁现象的发生过程、力学机制及防治对策。结果表明:围岩应力回迁现象存在,且具有滞后性、隐蔽性特征;深部煤体过度卸压弱化自身承载能力,并迫使支承压力向巷道方向回迁,是滞后性冲击与突出灾害发生的主要原因。结合该类灾害特点,提出近场强卸压与强支护、深部控卸压与强监测的防治对策,并被应用于河南某矿25110工作面,保证了该工作面的安全回采。

关键词: 围岩应力, 滞后性冲击与突出, 应力回迁, 数值模拟, 微震监测

Abstract: To investigate the occurrence mechanism of rockburst and outburst accidents induced by returned stress of surrounding rocks, a Stress Returning (SR) concept was proposed on the basis of a case-study within a 25110 working face in a coal mine (locates in Henan Province, China) , where two typical accidents had been occurred before. The process of occurrence, mechanical mechanism, and corresponding prevention countermeasures of the SR phenomenon were thoroughly studied using methods of theoretical analysis, numerical simulations and field measurements, etc. The results indicate that the SR is characterized by hysteresis and an eclipse period and that the excessive pressure relief of deep coal body reduces its load-bearing capacity and the abutment pressure is coerced back to the roadway,which is the main reason for occurrence hysteretic rockburst and outburst. Countermeasures adopted according to the results have been applied in the 25110 working face to guarantee the mining safety.

Key words: surrounding rocks stress, hysteretic rockburst and outburst, stress returning, numerical simulation, microseismic monitoring

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