深井巷道过断层群期间微震规律分析
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摘要
为更有效地预防深部矿井掘进工作面过断层群期间冲击矿压事故的发生,采用微震监测系统对断层群区域煤岩体内微震活动进行了全时段监测。基于微震活动在能量释放与震动频次方面的变化特征,分析了断块活动聚集能量对冲击矿压的诱发影响,以及断层群区域人为采掘扰动影响下的微震活动变化规律。结果表明:断层群构造区域微震活动具有较高的不稳定性,随着掘进工作面逐渐临近,区域内每日震动释放总能量值起伏波动逐渐增大,最大能量值呈现快速攀升趋势;强烈微震活动发生前有一段弱震活动时期,弱震活动为强震再次发生起到蓄能作用。
In order to effectively prevent the pressure bumping accidence occurred when a deep mine roadway heading face passed through fault group,the microseism monitoring and measuring system was applied to the full time monitoring and measuring on the microseismic activities in the coal and rock mass of the fault group area.Based on the variation features of the energy releasing and vibration frequency in the microseismic activities,the paper analyzed active accumulated energy of the fault block affected to the pressure bumping occurred and analyzed the variation law of the microseismic activity influenced by the human mining and excavation in the fault group area.The results showed that the microseismic activity in the fault group tectonic area would have a high instability.With the mine roadway face steadily closed to the fault group,the daily seismic released total energy value in the fault group area would be steadily increased.The max energy peak would be a tendency to be rapidly increased.Before the strong microseismic activity occurred,there would be a weak seismic activity period and the weak seismic activity would play an energy accumulation role to have a strong seismic to be occurred.
In order to effectively prevent the pressure bumping accidence occurred when a deep mine roadway heading face passed through fault group,the microseism monitoring and measuring system was applied to the full time monitoring and measuring on the microseismic activities in the coal and rock mass of the fault group area.Based on the variation features of the energy releasing and vibration frequency in the microseismic activities,the paper analyzed active accumulated energy of the fault block affected to the pressure bumping occurred and analyzed the variation law of the microseismic activity influenced by the human mining and excavation in the fault group area.The results showed that the microseismic activity in the fault group tectonic area would have a high instability.With the mine roadway face steadily closed to the fault group,the daily seismic released total energy value in the fault group area would be steadily increased.The max energy peak would be a tendency to be rapidly increased.Before the strong microseismic activity occurred,there would be a weak seismic activity period and the weak seismic activity would play an energy accumulation role to have a strong seismic to be occurred.
引文
[1]窦林名,赵从国,杨思光,等.煤矿开采冲击矿压灾害防治[M].徐州:中国矿业大学出版社,2006.
[2]窦林名,何学秋.采矿地球物理学[M].北京:中国科学文化出版社,2002.
[3]窦林名,何学秋.冲击矿压防治理论与技术[M].徐州:中国矿业大学出版社,2001.
[4]苏承东,李化敏.深埋高应力区巷道冲击地压预测与防治方法研究[J].岩石力学与工程学报,2008,27(S1):3840-3846.
[5]陆菜平,窦林名,吴兴荣,等.煤岩冲击前兆微震频谱演变规律的试验与实证研究[J].岩石力学与工程学报,2008,27(3):519-525.
[6]李志华,窦林名,牟宗龙,等.断层对顶板型冲击矿压的影响[J].采矿与安全工程学报,2008,25(2):154-158.
[7]陆菜平,窦林名,吴兴荣,等.煤矿冲击矿压的强度弱化[J].北京科技大学学报,2007,29(11):1074-1078.
[8]勾攀峰,晁建伟,孙光中.回采巷道过断层顶板应力分布特征研究[J].能源技术与管理,2007(4):1-3.
[9]姜福兴,杨淑华,成云海,等.煤矿冲击地压的微地震监测研究[J].地球物理学报,2006,49(5):1511-1516.
[10]窦林名,何学秋.煤岩冲击破坏模型及声电前兆判据研究[J].中国矿业大学学报,2004,33(5):504-508.
[11]宋卫东,赵增山,王浩.断层破碎带与采准巷道围岩作用机理模拟研究[J].金属矿山,2004(2):11-13.
[12]CAI M,KAISER P K,MARTIN C D.Quantification of RockMass Damage in Underground Excavations from MicroseismicEvent monitoring[J].International Journal of Rock Mechanicsand Mining Sciences,2001,38(8):1135-1145.
[13]孟召平,彭苏萍,黎洪.正断层附近煤的物理力学性质变化及其对矿压分布的影响[J].煤炭学报,2001,26(6):561-566.
[14]黄庆享,高召宁.巷道冲击地压的损伤断裂力学模型[J].煤炭学报,2001,26(2):156-159.
[15]潘一山,王来贵,章梦涛,等.断层冲击矿压发生的理论与试验研究[J].岩石力学与工程学报,1998,17(6):642-649.
[16]刘万琴,郑治真,鲁振华,等.用微震记录监测冲击地压前的应力变化[J].中国地震,1991,7(3):80-87.
[2]窦林名,何学秋.采矿地球物理学[M].北京:中国科学文化出版社,2002.
[3]窦林名,何学秋.冲击矿压防治理论与技术[M].徐州:中国矿业大学出版社,2001.
[4]苏承东,李化敏.深埋高应力区巷道冲击地压预测与防治方法研究[J].岩石力学与工程学报,2008,27(S1):3840-3846.
[5]陆菜平,窦林名,吴兴荣,等.煤岩冲击前兆微震频谱演变规律的试验与实证研究[J].岩石力学与工程学报,2008,27(3):519-525.
[6]李志华,窦林名,牟宗龙,等.断层对顶板型冲击矿压的影响[J].采矿与安全工程学报,2008,25(2):154-158.
[7]陆菜平,窦林名,吴兴荣,等.煤矿冲击矿压的强度弱化[J].北京科技大学学报,2007,29(11):1074-1078.
[8]勾攀峰,晁建伟,孙光中.回采巷道过断层顶板应力分布特征研究[J].能源技术与管理,2007(4):1-3.
[9]姜福兴,杨淑华,成云海,等.煤矿冲击地压的微地震监测研究[J].地球物理学报,2006,49(5):1511-1516.
[10]窦林名,何学秋.煤岩冲击破坏模型及声电前兆判据研究[J].中国矿业大学学报,2004,33(5):504-508.
[11]宋卫东,赵增山,王浩.断层破碎带与采准巷道围岩作用机理模拟研究[J].金属矿山,2004(2):11-13.
[12]CAI M,KAISER P K,MARTIN C D.Quantification of RockMass Damage in Underground Excavations from MicroseismicEvent monitoring[J].International Journal of Rock Mechanicsand Mining Sciences,2001,38(8):1135-1145.
[13]孟召平,彭苏萍,黎洪.正断层附近煤的物理力学性质变化及其对矿压分布的影响[J].煤炭学报,2001,26(6):561-566.
[14]黄庆享,高召宁.巷道冲击地压的损伤断裂力学模型[J].煤炭学报,2001,26(2):156-159.
[15]潘一山,王来贵,章梦涛,等.断层冲击矿压发生的理论与试验研究[J].岩石力学与工程学报,1998,17(6):642-649.
[16]刘万琴,郑治真,鲁振华,等.用微震记录监测冲击地压前的应力变化[J].中国地震,1991,7(3):80-87.
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