高速冲击载荷作用下巷道动态破坏过程试验研究
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摘要
冲击地压瞬时释放大量积聚能量,造成巷道严重破坏,直接影响煤矿安全生产。利用爆炸加载相似模拟试验和数字散斑观测方法(DSCM),研究高速冲击载荷作用下巷道动态破坏过程。试验结果表明,高速冲击波以巷道方向传递为主,顶板处变形较大,顶板岩层与煤岩体交界处发生错动,上部岩层明显下沉,顶板岩层受拉剪破坏,裂缝逐渐发育延伸至巷道;冲击波重复作用致使顶板岩体破碎,进而造成巷道局部破坏或垮塌。数字散斑观测结果说明,在高速冲击载荷作用下,顶板产生下沉位移约为4 mm,进而冲击波向两帮传播,岩层破碎后沿表面剥离脱落,表现为散斑计算结果云图中出现白色空白区。
Rock burst which releasing large quantity energy,may damage the roadway severely and reduce the safety of the production of coal mine.Using similarity simulation experiment under explosive loading and the digital speckle correlation method(DSCM),the dynamic failure process of roadway under high velocity impact loading is simulated.The results show that the impact wave is mainly in roadway direction and the deformation of the roof is obvious.At the same time,the roof has a cutting rupture and a displacement between coal body and upper roadway.The roof has a tension-shear rupture,and also the crack extends to roadway gradually.Roof broken or partial collapsing area appeared under the repeat impact loads.Digital speckle pattern observations show that the sinking displacement of roof about 4mm under impact load.And then the impact wave spreads to two sides of the roadway.The rock drops along the surface after broken.It assumes that the blank white space appears on the speckle patterns.
Rock burst which releasing large quantity energy,may damage the roadway severely and reduce the safety of the production of coal mine.Using similarity simulation experiment under explosive loading and the digital speckle correlation method(DSCM),the dynamic failure process of roadway under high velocity impact loading is simulated.The results show that the impact wave is mainly in roadway direction and the deformation of the roof is obvious.At the same time,the roof has a cutting rupture and a displacement between coal body and upper roadway.The roof has a tension-shear rupture,and also the crack extends to roadway gradually.Roof broken or partial collapsing area appeared under the repeat impact loads.Digital speckle pattern observations show that the sinking displacement of roof about 4mm under impact load.And then the impact wave spreads to two sides of the roadway.The rock drops along the surface after broken.It assumes that the blank white space appears on the speckle patterns.
引文
[1]范天佑.断裂动力学引论[M].北京:北京理工大学出版社,1990:370-371.
[2]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.
[3]彭苏萍,凌标灿.综采放顶煤工作面地震CT探测技术应用[J].岩石力学与工程学报,2002,21(12):1786-1790.PENG Su-ping,LING Biao-can.Application of seismic tomography in long-wall top-coal caving face[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(12):1786-1790.
[4]李海波,蒋会军,赵坚,等.动荷载作用下岩体工程安个的几个问题[J].岩石力学与工程学报,2003,22(11):1887-1891.LI Hai-bo,JIANG Hui-jun,ZHAO Jian,et al.Some problems about safety analysis of rock engineering under dynamic load[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1887-1891.
[5]李清,杨仁树,李均雷,等.爆炸荷载作用下动态裂纹扩展试验研究[J].岩石力学与工程学报,2005,24(16):2912-2916.LI Qing,YANG Ren-shu,LI Jun-lei,et al.Experimental study on propagation of dynamic cracks under blasting loading[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2912-2916.
[6]徐学锋,窦林名,刘军,等.煤矿巷道底板冲击矿压发生的原因及控制[J].岩土力学,2010,31(6):1977-1981.XU Xue-feng,DOU Lin-ming,LIU Jun,et al.Research of reasons and controlling for floor burst in coal mine roadway[J].Rock and Soil Mechanics,2010,31(6):1977-1981.
[7]夏红兵,徐颖,宗琦,等.爆炸荷载作用下裂隙岩体内损伤范围的观测研究[J].岩土力学,2007,28(4):795-798.XIA Hong-bing,XU Ying,ZONG Qi,et al.Observation study of fissure rock damage range under blasting load[J].Rock and Soil Mechanics,2007,28(4):795-798.
[8]王明洋,葛涛,戚承志,等.爆炸载荷作用下岩石的变形与破坏研究(Ⅰ)[J].防灾减灾工程学报,2003,23(2):43-52.WANG Ming-yang,GE Tao,QI Cheng-zhi,et al.Study on deformation and failure of rock under explosion load:part(Ⅰ)[J].Journal of Disaster Prevention and Mitigation Engineering,2003,23(2):43-52.
[9]王明洋,王立云,戚承志,等.爆炸载荷作用下岩石的变形与破坏研究(Ⅱ)[J].防灾减灾工程学报,2003,23(3):9-20.WANG Ming-yang,WANG Li-yun,QI Cheng-zhi,et al.Study on deformation and failure of rock under explosion load:Part(Ⅱ)[J].Journal of Disaster Prevention and Mitigation Engineering,2003,23(3):9-20.
[10]范新,王明洋,谭可可.爆炸荷载作用下深部块体变形运动规律研究[J].岩石力学与工程学报,2007,26(5):1019-1025.FAN Xin,WANG Ming-yang,TAN Ke-ke.Study on rule of block deformation and movement under explosion loads[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(5):1019-1025.
[11]胡柳青,李夕兵,龚声武.冲击载荷作用下裂纹动态响应的数值模拟[J].爆炸与冲击,2006,26(3):214-221.HU Liu-qing,LI Xi-bing,GONG Sheng-wu.Simulation on dynamic response of crack subjected to impact loading[J].Explosion and Shock Waves,2006,26(3):214-221.
[12]赵以贤,王良国.爆炸载荷作用下地下圆形结构动态分析[J].应用力学学报,1997,14(1):94-98.ZHAO Yi-xian,WANG Liang-guo.Dynamic analysis of responses of an underground round structure to explosive loading[J].Chinese Journal of Applied Mechanics,1997,14(1):94-98.
[13]梁冰,孙维吉,杨冬鹏,等.抛掷爆破对内排土场边坡稳定性影响的试验研究[J].岩石力学与工程学报,2006,28(4):710-715.LIANG Bing,SUN Wei-ji,YANG Dong-peng,et al.Experimental study of influence of cast blasting on inner dump slope stability[J].Chinese Journal of Rock Mechanics and Engineering,2006,28(4):710-715.
[14]颜峰,姜福兴.爆炸冲击载荷作用下岩石的损伤试验[J].爆炸与冲击,2009,29(3):275-280.YAN Feng,JIANG Fu-xing.Experiment on rock damage under blasting load[J].Explosion and Shock Waves,2009,29(3):275-280.
[15]戴俊,钱七虎.高地应力条件下的巷道崩落爆破参数[J].爆炸与冲击,2007,27(3):273-277.DAI Jun,QIAN Qi-hu.Break blasting parameters for driving a roadway in rock with high residual stress[J].Explosion and Shock Waves,2007,27(3):273-277.
[2]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.
[3]彭苏萍,凌标灿.综采放顶煤工作面地震CT探测技术应用[J].岩石力学与工程学报,2002,21(12):1786-1790.PENG Su-ping,LING Biao-can.Application of seismic tomography in long-wall top-coal caving face[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(12):1786-1790.
[4]李海波,蒋会军,赵坚,等.动荷载作用下岩体工程安个的几个问题[J].岩石力学与工程学报,2003,22(11):1887-1891.LI Hai-bo,JIANG Hui-jun,ZHAO Jian,et al.Some problems about safety analysis of rock engineering under dynamic load[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1887-1891.
[5]李清,杨仁树,李均雷,等.爆炸荷载作用下动态裂纹扩展试验研究[J].岩石力学与工程学报,2005,24(16):2912-2916.LI Qing,YANG Ren-shu,LI Jun-lei,et al.Experimental study on propagation of dynamic cracks under blasting loading[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2912-2916.
[6]徐学锋,窦林名,刘军,等.煤矿巷道底板冲击矿压发生的原因及控制[J].岩土力学,2010,31(6):1977-1981.XU Xue-feng,DOU Lin-ming,LIU Jun,et al.Research of reasons and controlling for floor burst in coal mine roadway[J].Rock and Soil Mechanics,2010,31(6):1977-1981.
[7]夏红兵,徐颖,宗琦,等.爆炸荷载作用下裂隙岩体内损伤范围的观测研究[J].岩土力学,2007,28(4):795-798.XIA Hong-bing,XU Ying,ZONG Qi,et al.Observation study of fissure rock damage range under blasting load[J].Rock and Soil Mechanics,2007,28(4):795-798.
[8]王明洋,葛涛,戚承志,等.爆炸载荷作用下岩石的变形与破坏研究(Ⅰ)[J].防灾减灾工程学报,2003,23(2):43-52.WANG Ming-yang,GE Tao,QI Cheng-zhi,et al.Study on deformation and failure of rock under explosion load:part(Ⅰ)[J].Journal of Disaster Prevention and Mitigation Engineering,2003,23(2):43-52.
[9]王明洋,王立云,戚承志,等.爆炸载荷作用下岩石的变形与破坏研究(Ⅱ)[J].防灾减灾工程学报,2003,23(3):9-20.WANG Ming-yang,WANG Li-yun,QI Cheng-zhi,et al.Study on deformation and failure of rock under explosion load:Part(Ⅱ)[J].Journal of Disaster Prevention and Mitigation Engineering,2003,23(3):9-20.
[10]范新,王明洋,谭可可.爆炸荷载作用下深部块体变形运动规律研究[J].岩石力学与工程学报,2007,26(5):1019-1025.FAN Xin,WANG Ming-yang,TAN Ke-ke.Study on rule of block deformation and movement under explosion loads[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(5):1019-1025.
[11]胡柳青,李夕兵,龚声武.冲击载荷作用下裂纹动态响应的数值模拟[J].爆炸与冲击,2006,26(3):214-221.HU Liu-qing,LI Xi-bing,GONG Sheng-wu.Simulation on dynamic response of crack subjected to impact loading[J].Explosion and Shock Waves,2006,26(3):214-221.
[12]赵以贤,王良国.爆炸载荷作用下地下圆形结构动态分析[J].应用力学学报,1997,14(1):94-98.ZHAO Yi-xian,WANG Liang-guo.Dynamic analysis of responses of an underground round structure to explosive loading[J].Chinese Journal of Applied Mechanics,1997,14(1):94-98.
[13]梁冰,孙维吉,杨冬鹏,等.抛掷爆破对内排土场边坡稳定性影响的试验研究[J].岩石力学与工程学报,2006,28(4):710-715.LIANG Bing,SUN Wei-ji,YANG Dong-peng,et al.Experimental study of influence of cast blasting on inner dump slope stability[J].Chinese Journal of Rock Mechanics and Engineering,2006,28(4):710-715.
[14]颜峰,姜福兴.爆炸冲击载荷作用下岩石的损伤试验[J].爆炸与冲击,2009,29(3):275-280.YAN Feng,JIANG Fu-xing.Experiment on rock damage under blasting load[J].Explosion and Shock Waves,2009,29(3):275-280.
[15]戴俊,钱七虎.高地应力条件下的巷道崩落爆破参数[J].爆炸与冲击,2007,27(3):273-277.DAI Jun,QIAN Qi-hu.Break blasting parameters for driving a roadway in rock with high residual stress[J].Explosion and Shock Waves,2007,27(3):273-277.
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