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金属矿山 ›› 2013, Vol. 42 ›› Issue (11): 146-149.

• 安全与环保 • 上一篇    下一篇

深部下山煤柱区矿震规律研究

刘振江1,2,牟宗龙2,3,窦林名1,2,王浩1,2,温颖远1,2   

  1. 1.煤炭资源与安全开采国家重点实验室;2.中国矿业大学矿业工程学院;3.兖矿集团博士后工作站
  • 出版日期:2013-11-15 发布日期:2014-01-26
  • 基金资助:

    * 国家重点基础研究发展计划(973计划)项目(编号:2012CB724206),“十二五”国家科技支撑计划项目(编号:2012BAK09B01),国家自然科学基金项目(编号:511104150),中国博士后科学基金第四批特别项目(编号:201104609),山东省博士后创新项目专项资金项目(编号:201002009),江苏省高校优势学科建设工程项目(编号:PAPD,SZBF2011-6-B35)。

Study on Activity Rules of Mining Shock in Deep Downhill Pillar Region

Liu Zhenjiang1,2,Mu Zonglong2,3,Dou Linming1,2,Wang Hao1,2,Wen Yingyuan1,2   

  1. 1.State Key Laboratory of Coal Resources and Safe Mining;2.School of Mines,China University of Mining & Technology; 3.Postdoctoral Work Station,Yanzhou Coal Mining Group
  • Online:2013-11-15 Published:2014-01-26

摘要: 针对某矿-1 025 m西一下山采区9煤回风下山发生的多次冲击矿压显现,利用SOS微震监测系统,研究分析深部下山煤柱区域矿震活动规律。结果表明:冲击矿压发生前,矿震能量持续上升,频次亦持续增加或维持在较高水平;矿震沿下山集中明显,主要位于2个覆岩关键层内,高静载加强矿震扰动是诱发巷道冲击破坏的主要原因;冲击前兆强矿震信号呈现低频率、高振幅特征。根据监测结果实施煤体大直径钻孔、顶板预裂爆破以及优化支护等矿震弱化控制技术,现场效果良好。

关键词: 深部, 下山煤柱区, 冲击矿压, 矿震活动规律, 弱化控制

Abstract: Based on several rock-burst behaviors during tunneling of 9th return-air roadway in -1025 west downhill mining area,the activity rules of mining shock in the downhill pillar region are analyzed with SOS micro-seismic monitoring systemThe results indicate that the energy level continuously rises while the number of tremors level also increases or maintaines at a higher level before the rock-burst happens; Mine shock obviously concentrates along the downhill direction,and mainly distributed in two overlying key stratums and the high static stress and strong mining shock disturbance is the main reason for rock-burst; The rock-burst strong mining shock omen signal shows a low frequency and high amplitude characteristicsControlled weakening treatments of mining shock including large diameter borehole,floor pre-split blasting and optimized support methods are applied on the basis of monitoring results with good effects achieved in-site.

Key words: Deep downhill pillar region, Rock-burst, Activity rules of mining shock, Weakening and controlling