千米深井强冲击倾向性煤层冲击地压防治实践
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摘要
针对华丰煤矿开采深度达1150m的4号煤层具有强冲击倾向性、直接顶具有中等冲击倾向性,工作面开采过程中面临严重的冲击地压威胁等问题,为了防止开采期间冲击地压的发生,对准备工作面实施区域卸压,开采上下解放层,施工直径108mm、深度30m、孔间距2.5m的煤层大直径卸压钻孔等措施,当准备工作面煤层应力降低30%～50%后,再在工作面回采过程中通过微震监测、矿震监测、地音监测、应力监测和钻屑法监测等技术进行监测。实践证明,对准备工作面实施区域卸压和冲击地压监测技术,可有效防止破坏性冲击地压的发生。
According to the mining depth of No.4 seam in Huafeng Mine was over 1 150 m and the seam with the high bumping tendency and the immediate roof with medium pressure bumping tendency,the coal mining face would face a serious rock burst danger and other problems during the mining process.In order to prevent the rock burst occurred in the mining period,a regional pressure releasing,mining in the upper and lower liberated seams,constructed large diameter pressure releasing borehole with diameter of 108 mm,depth of 30 m and space of 2.5 m between boreholes and other measures conducted for the standby coal mining face.When the stress of the standby coal mining area was reduced by 30%~50%,the micro seismic monitoring and measuring,mine seismic monitoring and measuring,ground sound monitoring and measuring,stress monitoring and measuring,drilling cuttings monitoring and measuring and other technology were applied to monitor and measuring the coal mining face during the mining process.The practices showed that the regional pressure releasing and the rock burst monitoring and measuring technology conducted in the standby coal mining face could effectively prevent the destructive rock burst occurred.
According to the mining depth of No.4 seam in Huafeng Mine was over 1 150 m and the seam with the high bumping tendency and the immediate roof with medium pressure bumping tendency,the coal mining face would face a serious rock burst danger and other problems during the mining process.In order to prevent the rock burst occurred in the mining period,a regional pressure releasing,mining in the upper and lower liberated seams,constructed large diameter pressure releasing borehole with diameter of 108 mm,depth of 30 m and space of 2.5 m between boreholes and other measures conducted for the standby coal mining face.When the stress of the standby coal mining area was reduced by 30%~50%,the micro seismic monitoring and measuring,mine seismic monitoring and measuring,ground sound monitoring and measuring,stress monitoring and measuring,drilling cuttings monitoring and measuring and other technology were applied to monitor and measuring the coal mining face during the mining process.The practices showed that the regional pressure releasing and the rock burst monitoring and measuring technology conducted in the standby coal mining face could effectively prevent the destructive rock burst occurred.
引文
[1]潘立友,张立俊,刘先贵.冲击地压预测与防治实用技术[M].徐州:中国矿业大学出版,2006.
[2]齐庆新,窦林名.冲击地压理论与技术[M].徐州:中国矿业大学出版,2008.
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[6]刘金海,姜福兴,冯涛.C型采场支承压力分布特征的数值模拟研究[J].岩土力学,2010,31(12):4011-4015.
[7]章梦涛.冲击地压失稳理论与数值模拟计算[J].岩石力学与工程学报,1987,6(3):197-204.
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[9]李玉生.冲击地压机理及其初步应用[J].中国矿业学院学报,1985(3):37-43.
[10]窦林名,陆菜平,牟宗龙,等.冲击矿压的强度弱化减冲理论及其应用[J].煤炭学报,2005,35(5):690-694.
[11]于正兴,姜福兴,桂兵,等.防治冲击地压的应力三向化理论研究及应用[J].煤炭科学技术,2011,39(7):1-4.
[12]潘一山,赵杨锋,官福海,等.矿震监测定位系统的研究及应用[J].岩石力学与工程学报,2007,26(5):1002-1011.
[13]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.
[2]齐庆新,窦林名.冲击地压理论与技术[M].徐州:中国矿业大学出版,2008.
[3]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,2006.
[4]谢和平.矿山岩体力学及工程的研究进展与展望[J].中国工程科学,2003,5(3):31-38.
[5]何满潮,谢和平,彭苏萍,等.深部开采岩体力学研究[J].岩石力学与工程学报,2005,24(16):2803-2813.
[6]刘金海,姜福兴,冯涛.C型采场支承压力分布特征的数值模拟研究[J].岩土力学,2010,31(12):4011-4015.
[7]章梦涛.冲击地压失稳理论与数值模拟计算[J].岩石力学与工程学报,1987,6(3):197-204.
[8]齐庆新,史元伟,刘天泉.冲击地压粘滑失稳理论的研究[J].煤炭学报,1997,22(2):144-148.
[9]李玉生.冲击地压机理及其初步应用[J].中国矿业学院学报,1985(3):37-43.
[10]窦林名,陆菜平,牟宗龙,等.冲击矿压的强度弱化减冲理论及其应用[J].煤炭学报,2005,35(5):690-694.
[11]于正兴,姜福兴,桂兵,等.防治冲击地压的应力三向化理论研究及应用[J].煤炭科学技术,2011,39(7):1-4.
[12]潘一山,赵杨锋,官福海,等.矿震监测定位系统的研究及应用[J].岩石力学与工程学报,2007,26(5):1002-1011.
[13]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.
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