动力扰动诱发顶板断裂的数值模拟分析
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摘要
顶板突然断裂时易诱发冲击矿压灾害,造成重大伤亡事故.为了研究顶板突发断裂的诱导因素,采用FLAC3D软件的动力学模块分析了动力扰动对顶板稳定性和断裂规律的影响,以及不同扰动强度下顶板破坏规律.结果表明,动力扰动造成顶板剪切破坏,在煤壁上方形成剪切带,从而易导致顶板突发剪切断裂破坏,增大了发生顶板灾害的可能性.且随着扰动峰值增加,扰动破坏影响强度和影响范围都显著增大.结论对制定合理的顶板灾害预防措施有着重要指导作用.
Rock bursts can be easily induced by a sudden fracturing of roof which causes a serious casualty.In order to study induction factors of roof fracture,the effect of roof stability and fracture characteristics under dynamic disturbance are simulated by using dynamic analysis module of FLAC3D,the failure forms and patterns under different dynamic disturbance intensity are gained.The results show that extensive shear failure of roof is induced by the action of dynamic disturbance,a shear band is formed under the wall,then it can result in a sudden shear failure and the possibility of roof disaster increases.The affecting intensity and range significantly increase with the increase of disturbance peak value.The research results are very effective in selecting rational roof disaster prevention measures.
Rock bursts can be easily induced by a sudden fracturing of roof which causes a serious casualty.In order to study induction factors of roof fracture,the effect of roof stability and fracture characteristics under dynamic disturbance are simulated by using dynamic analysis module of FLAC3D,the failure forms and patterns under different dynamic disturbance intensity are gained.The results show that extensive shear failure of roof is induced by the action of dynamic disturbance,a shear band is formed under the wall,then it can result in a sudden shear failure and the possibility of roof disaster increases.The affecting intensity and range significantly increase with the increase of disturbance peak value.The research results are very effective in selecting rational roof disaster prevention measures.
引文
[1]宋振骐.实用矿山压力与控制[M].徐州:中国矿业大学出版社,1988.
[2]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2003.
[3]钱鸣高,缪协兴.采场上覆岩层结构的形态与受力分析[J].岩石力学与工程学报,1995,14(2):97-106.QIAN Ming-gao,MIAO Xie-xing.Theoretical analy-sis on the structural form and stability of overlyingstrata in long wall mining[J].Chinese Journal ofRock Mechanics and Engineering,1995,14(2):97-106.
[4]缪协兴,陈荣华,浦海,等.采场覆岩厚关键层破断与冒落规律分析[J].岩石力学与工程学报,2005,24(8):1289-1295.MIAO Xie-xing,CHEN Rong-huai,PU Hai,et al.Analysis of breakage and collapse of thick key strataaround coal face[J].Chinese Journal of Rock Me-chanics and Engineering,2005,24(8):1289-1295.
[5]牟宗龙,窦林名,李慧民,等.顶板岩层特性对煤体冲击影响的数值模拟[J].采矿与安全工程学报,2009,26(1):26-30.MU Zong-long,DOU Lin-ming,LI Hui-min,et al.Numerical simulation of roof stratum effect on coalmass burst[J].Journal of Mining&Safety Engi-neering,2009,26(1):26-30.
[6]GOSZCZ,ANTONI.Rock bursts and ways to com-bat them[J].Archiwum Gornictwa,1991,36(3):239-261.
[7]王慧明.三河尖煤矿冲击地压的特点及治理[J].矿山压力与顶板管理,2004,21(3):115-117.WANG Hui-ming.The characteristics and preventionof rock burst in Sanhejian coal mine[J].GroundPressure and Strata Control,2004,21(3):115-117.
[8]吴志刚,翟明华,周廷振.徐州西部矿区坚硬顶板来压预测预报[J].岩石力学与工程学报,1996,15(2):163-170.WU Zhi-gang,ZHAI Ming-hua,ZHOU Ting-zhen.Prediction to roof pressure of the west mine inXuzhou[J].Chinese Journal of Rock Mechanics andEngineering,1996,15(2):163-170.
[9]梁冰,章梦涛,李国臻.坚硬顶板断裂过程的数值模拟[J].矿山压力与顶板管理,1996,13(1):60-62.LIANG Bing,ZHANG Meng-tao,LI Guo-zhen.Nu-merical simulation study of fracture process of hardroof[J].Ground Pressure and Strata Control,1996,13(1):60-62.
[10]赵兴东,杨天鸿,唐春安,等.煤层顶板破断机理研究[J].矿业研究与开发,2003,23(5):8-11.ZHAO Xing-dong,YANG Tian-hong,TANGChun-an,et al.Study on the broking mechanism ofroof stratum of coal seam[J].Ming Research andDevelopment,2003,23(5):8-11.
[11]朱庆华,王继承,马占国.浅埋煤层厚硬顶板破断与冒落的数值模拟[J].矿山压力与顶板管理,2004,21(4):17-19.ZHU Qing-hua,WANG Ji-cheng,MA Zhan-guo.Numerical simulation study of rupture of roof on thecondition of the shallow coal seams[J].GroundPressure and Strata Control,2004,21(4):17-19.
[12]彭苏萍,孟召平.长壁工作面顶底板稳定性数值模拟[J].中国矿业大学学报,1999,28(1):41-45.PENG Su-ping,MENG Zhao-ping.Numerical sim-ulation on roof and floor stability in long wall faces[J].Journal of China University of Mining&Tech-nology,1999,28(1):41-45.
[13]朱万成,左宇军,尚世明,等.动态扰动触发深部巷道发生失稳破裂的数值模拟[J].岩石力学与工程学报,2007,26(5):915-921.ZHU Wan-cheng,ZUO Yu-jun,SHANG Shi-ming,et al.Numerical simulation of in stable failure ofdeep rock tunnel triggered by dynamic disturbance[J].Chinese Journal of Rock Mechanics and Engi-neering,2007,26(5):915-921.
[14]卢爱红,郁时炼,秦昊,等.应力波作用下巷道围岩层裂结构的稳定性研究[J].中国矿业大学学报,2008,37(6):769-775.LU Ai-hong,YU Shi-lian,QIN Hao,et al.Stabili-ty of layered crack structure in roadway surroundingrock under stress wave[J].Journal of China Uni-versity of Mining&Technology,2008,37(6):769-775.
[15]李仲奎,戴荣,姜逸明.FLAC3D分析中的初始应力场生成及在大型地下洞室群计算中的应用[J].岩石力学与工程学报,2002,21(增刊):2388-2392.LI Zhong-kui,DAI Rong,JIANG Yi-ming.Im-provement of the generation of the initial stress fieldby using FLAC3Dand application in a huge under-ground cavern group[J].Chinese Journal of RockMechanics and Engineering,2002,21(Supp):2388-2392.
[16]龙源,冯长根,徐全军,等.爆破地震波在岩石介质中传播特性与数值计算研究[J].工程爆破,2000,6(3):1-7.LONG Yuan,FENG Chang-gen,XU Quan-jun,etal.Study on propagation characteristics of blastingseismic waves in a rock medium and numerical calcu-lation[J].Engineering Blasting,2000,6(3):1-7.
[2]钱鸣高,石平五.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2003.
[3]钱鸣高,缪协兴.采场上覆岩层结构的形态与受力分析[J].岩石力学与工程学报,1995,14(2):97-106.QIAN Ming-gao,MIAO Xie-xing.Theoretical analy-sis on the structural form and stability of overlyingstrata in long wall mining[J].Chinese Journal ofRock Mechanics and Engineering,1995,14(2):97-106.
[4]缪协兴,陈荣华,浦海,等.采场覆岩厚关键层破断与冒落规律分析[J].岩石力学与工程学报,2005,24(8):1289-1295.MIAO Xie-xing,CHEN Rong-huai,PU Hai,et al.Analysis of breakage and collapse of thick key strataaround coal face[J].Chinese Journal of Rock Me-chanics and Engineering,2005,24(8):1289-1295.
[5]牟宗龙,窦林名,李慧民,等.顶板岩层特性对煤体冲击影响的数值模拟[J].采矿与安全工程学报,2009,26(1):26-30.MU Zong-long,DOU Lin-ming,LI Hui-min,et al.Numerical simulation of roof stratum effect on coalmass burst[J].Journal of Mining&Safety Engi-neering,2009,26(1):26-30.
[6]GOSZCZ,ANTONI.Rock bursts and ways to com-bat them[J].Archiwum Gornictwa,1991,36(3):239-261.
[7]王慧明.三河尖煤矿冲击地压的特点及治理[J].矿山压力与顶板管理,2004,21(3):115-117.WANG Hui-ming.The characteristics and preventionof rock burst in Sanhejian coal mine[J].GroundPressure and Strata Control,2004,21(3):115-117.
[8]吴志刚,翟明华,周廷振.徐州西部矿区坚硬顶板来压预测预报[J].岩石力学与工程学报,1996,15(2):163-170.WU Zhi-gang,ZHAI Ming-hua,ZHOU Ting-zhen.Prediction to roof pressure of the west mine inXuzhou[J].Chinese Journal of Rock Mechanics andEngineering,1996,15(2):163-170.
[9]梁冰,章梦涛,李国臻.坚硬顶板断裂过程的数值模拟[J].矿山压力与顶板管理,1996,13(1):60-62.LIANG Bing,ZHANG Meng-tao,LI Guo-zhen.Nu-merical simulation study of fracture process of hardroof[J].Ground Pressure and Strata Control,1996,13(1):60-62.
[10]赵兴东,杨天鸿,唐春安,等.煤层顶板破断机理研究[J].矿业研究与开发,2003,23(5):8-11.ZHAO Xing-dong,YANG Tian-hong,TANGChun-an,et al.Study on the broking mechanism ofroof stratum of coal seam[J].Ming Research andDevelopment,2003,23(5):8-11.
[11]朱庆华,王继承,马占国.浅埋煤层厚硬顶板破断与冒落的数值模拟[J].矿山压力与顶板管理,2004,21(4):17-19.ZHU Qing-hua,WANG Ji-cheng,MA Zhan-guo.Numerical simulation study of rupture of roof on thecondition of the shallow coal seams[J].GroundPressure and Strata Control,2004,21(4):17-19.
[12]彭苏萍,孟召平.长壁工作面顶底板稳定性数值模拟[J].中国矿业大学学报,1999,28(1):41-45.PENG Su-ping,MENG Zhao-ping.Numerical sim-ulation on roof and floor stability in long wall faces[J].Journal of China University of Mining&Tech-nology,1999,28(1):41-45.
[13]朱万成,左宇军,尚世明,等.动态扰动触发深部巷道发生失稳破裂的数值模拟[J].岩石力学与工程学报,2007,26(5):915-921.ZHU Wan-cheng,ZUO Yu-jun,SHANG Shi-ming,et al.Numerical simulation of in stable failure ofdeep rock tunnel triggered by dynamic disturbance[J].Chinese Journal of Rock Mechanics and Engi-neering,2007,26(5):915-921.
[14]卢爱红,郁时炼,秦昊,等.应力波作用下巷道围岩层裂结构的稳定性研究[J].中国矿业大学学报,2008,37(6):769-775.LU Ai-hong,YU Shi-lian,QIN Hao,et al.Stabili-ty of layered crack structure in roadway surroundingrock under stress wave[J].Journal of China Uni-versity of Mining&Technology,2008,37(6):769-775.
[15]李仲奎,戴荣,姜逸明.FLAC3D分析中的初始应力场生成及在大型地下洞室群计算中的应用[J].岩石力学与工程学报,2002,21(增刊):2388-2392.LI Zhong-kui,DAI Rong,JIANG Yi-ming.Im-provement of the generation of the initial stress fieldby using FLAC3Dand application in a huge under-ground cavern group[J].Chinese Journal of RockMechanics and Engineering,2002,21(Supp):2388-2392.
[16]龙源,冯长根,徐全军,等.爆破地震波在岩石介质中传播特性与数值计算研究[J].工程爆破,2000,6(3):1-7.LONG Yuan,FENG Chang-gen,XU Quan-jun,etal.Study on propagation characteristics of blastingseismic waves in a rock medium and numerical calcu-lation[J].Engineering Blasting,2000,6(3):1-7.
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