急斜特厚煤层动力学失稳现场声发射监测
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摘要
急斜特厚煤层开采扰动区(Mining Disturbed Zone,MDZ)煤岩应力与变形规律复杂,采动影响下局部煤岩层滑移造成应力集中,使煤岩体产生"强烈"的动力学失稳与破坏。以大洪沟煤矿B3+6急斜特厚煤层综放开采为工程背景,通过现场声发射(acoustic emission,AE)监测,分析采动条件下煤岩介质动力学失稳及破坏规律,为制定解危对策提供科学依据。
The movement regularity of heavy and steep coal seam disturbed mining zone is complex.Because of the formation of mining strata partial slip gravity stress,the influence caused by coal and rock stress concentration produces "strong" dynamic destabilization and destruction.Taking B3 +6 heavy and steep coal seam fully-mechanized sublevel caving mining in DAHONG coal mine as engineering background,the dynamic destabilization and destruction regularities of coal and rock are analyzed by acoustic emission monitoring for formulating scientific measures.
The movement regularity of heavy and steep coal seam disturbed mining zone is complex.Because of the formation of mining strata partial slip gravity stress,the influence caused by coal and rock stress concentration produces "strong" dynamic destabilization and destruction.Taking B3 +6 heavy and steep coal seam fully-mechanized sublevel caving mining in DAHONG coal mine as engineering background,the dynamic destabilization and destruction regularities of coal and rock are analyzed by acoustic emission monitoring for formulating scientific measures.
引文
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[2]唐春安.岩石声发射规律数值模拟初探[J].岩石力学与工程学报,1997,16(4):368-374.TANG Chun-an.Numerical simulation of AE in rock failure[J].Chinese Journal of Rock Mechanics and Engineering,1997,16(4):368-374.
[3]姜福兴,苗小虎,王存文,等.构造控制型冲击地压的微地震监测预警研究与实践[J].煤炭学报,2010,35(6):900-902.JIANG Fu-xing,MIAO Xiao-hu,WANG Cun-wen,et al.Predicting research and practice of tectonic controlled coal burst bymicroseismic monitoring[J].Journal of China Society,2010,35(6):900-902.
[4]何学秋,聂百胜,王恩元,等.矿井煤岩动力灾害电磁辐射预警技术[J].煤炭学报,2007,32(1):56-59.HE Xue-qun,NIE Bai-sheng,WANG En-yuan,et al.Electromagnetic emission forecasting technology of coal or rock dynamicdisasters in mine[J].Journal of China Coal Society,2007,32(1):56-59.
[5]窦林名,天京城,陆菜平,等.组合煤岩冲击破坏电磁辐射规律研究[J].岩石力学与工程学报,2005,24(19):3 541-3544.DU Lin-ming,TIAN Jing-cheng,LU Cai-ping,et al.Research on electromanetic radiation rules of composed coal-rock burstfailure[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(19):3 541-3 544.
[6]孙振武,代进,杨春苗,等.矿山井巷和采场冲击地压危险性的弹性能判据[J].煤炭学报,2007,32(8):785-796.SUN Zhen-wu,DAI Jin,YANG Chun-miao,et al.Elastic energy criterion of rock burst in roadway and coalface of mine[J].Journal of China Coal Society,2007,32(8):794-798.
[7]孙振武,谭云亮,代进,等.煤岩体中弹性比能分布的有限元计算分析[J].中国矿业大学学报,2007,36(1):49-53.SUN Zhen-wu,TAN Yun-liang,DAI Jin,et al.Finite element analysis for the distribution of elastic specific energy in coal androck mass[J].Journal of China University of Mining&Technology,2007,36(1):49-53.
[8]来兴平,吕兆海,张勇,等.不同加载模式下煤样损伤与变形声发射特征对比分析[J].岩石力学与工程学报,2008,27(2):3 521-3 527.LAI Xing-ping,LV Zhao-hai,ZHANG Yong,et al.Comparative analysis of acoustics emission characteristics on damage anddefomation of coal samples under different loading modes[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(2):3 521-3 527.
[9]来兴平,张勇,奚家米,等.基于AE的煤岩破裂与动态失稳特征实验及综合分析[J].西安科技大学学报,2006,26(3):289-292.LAI Xing-ping,ZHANG Yong,XI Jia-mi,et al.Comprehensive characteristics analysis of crack propagation and dyamical de-stabilizaition of coal-rock based on acoustic emission experiment[J].Journal of Xi’an University of Science and Technolgoy,2006,26(3):289-292.
[10]李玉民,来兴平,蔡晓芒,等.开采扰动区(EDZ)内层状转岩变尺度损伤及失稳预计实验及综合分析[J].西安科技大学学报,2007,27(1):15-19.LI Yu-min,LAI Xing-ping CAI Xiao-mang,et al.Experiment and comprehensive analysis of fracture characteristics and insta-bility predictions for laminated rockmass in EDZ[J].Journal of Xi’an University of Science and Technolgoy,2007,27(1):15-19.
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