隐伏断层活化诱发石门揭煤突出的数值模拟研究
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摘要
结合工程实例,采用3DEC数值模拟软件进行了隐伏断层活化诱发石门揭煤突出的数值模拟实验研究。通过模拟断层活化、滑移以及揭煤工作面应力集中等现象,研究了动力扰动影响下的隐伏断层活化规律、煤岩体应力状态的动态响应、瓦斯运移通道的形成以及揭煤突出的可能性,揭示了开采扰动、断层活化、煤与瓦斯突出之间的因果关系,分析了隐伏断层活化诱导石门揭煤突出的机理。通过分析具体工况条件下的模拟结果,得到隐伏断层活化诱发石门揭煤突出的发生规律,对生产实际中隐伏断层影响带内煤与瓦斯突出问题的防治具有指导意义。
Combined with an engineering example,3DEC numerical simulation software was used for the numerical simulation experiment on the outburst of uncovering coal in crosscut induced by concealed fault activation.By simulating the phenomenons such as fault activation,slippage and stress concentration on uncovering coal surface,the activation law of concealed fault under the influence of dynamic disturbance,the dynamic response of the stress state of coal and rock mass,the formation of gas migration channel and the possibility of uncovering coal outburst were studied.The causal relationships between mining disturbance and fault activation with coal and gas outburst were revealed,and the mechanism of outburst of uncovering coal in crosscut induced by concealed fault activation was analyzed.Through the analysis on simulation results under specific working conditions,the occurrence laws of uncovering coal outburst induced by the concealed fault activation were obtained.The study was of guiding significance to the prevention and control of coal and gas outburst in the zone affected by concealed faults in actual production.
Combined with an engineering example,3DEC numerical simulation software was used for the numerical simulation experiment on the outburst of uncovering coal in crosscut induced by concealed fault activation.By simulating the phenomenons such as fault activation,slippage and stress concentration on uncovering coal surface,the activation law of concealed fault under the influence of dynamic disturbance,the dynamic response of the stress state of coal and rock mass,the formation of gas migration channel and the possibility of uncovering coal outburst were studied.The causal relationships between mining disturbance and fault activation with coal and gas outburst were revealed,and the mechanism of outburst of uncovering coal in crosscut induced by concealed fault activation was analyzed.Through the analysis on simulation results under specific working conditions,the occurrence laws of uncovering coal outburst induced by the concealed fault activation were obtained.The study was of guiding significance to the prevention and control of coal and gas outburst in the zone affected by concealed faults in actual production.
引文
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[18]赵志刚,谭云亮,程国强.煤巷掘进迎头煤与瓦斯突出的突变机制分析[J].岩土力学,2008(6):1644-1648.
[19]颜爱华,徐涛.煤与瓦斯突出的物理模拟和数值模拟研究[J].中国安全科学学报,2008(9):37-42.
[20]柯春培,严家平,徐胜平,童柳华.祁南煤矿小型断裂构造复杂程度与褶皱变形研究[J].煤炭科学技术,2013,41(5):113-116.
[21]谢和平,周宏伟,刘建锋,等.不同开采条件下采动力学行为研究[J].煤炭学报,2011,36(7):1067-1074.
[22]李建林,王乐华,等.卸荷岩体力学原理与应用[M].北京:科学出版社,2016:58-456.
[23]邓华锋,王哲,李建林,等.卸荷速率和孔隙水压力对砂岩卸荷特性影响研究[J].岩土工程学报,2017,39(11):1976-1983.
[2]高魁,刘泽功,刘健.地应力在石门揭构造软煤诱发煤与瓦斯突出中的作用[J].岩石力学与工程学报,2015,34(2):305-312.
[3]Sellers E J,Klerck P.Modeling of the effect of discontinuities on the extent of the fracture zone surrounding deep tunnels[J].Tunneling and Underground Space Technology,2000,15(4):463-469
[4]郝育喜,王炯,王浩,等.深井断层破碎带穿层软岩巷道锚网索耦合控制对策[J].采矿与安全工程学报,2016,33(2):231-237.
[5]崔洪庆,姚念岗.断层带煤岩应力分布特征数值模拟研究[J].河南理工大学学报(自然科学版),2011,30(5):525-528+54.
[6]李润求,施式亮,念其锋,等.近10年我国煤矿瓦斯灾害事故规律研究[J].中国安全科学学报,2011,21(9):143-151.
[7]贾天让,王蔚,张子敏,等.现代构造应力场下断层走向对瓦斯突出的影响[J].采矿与安全工程学报,2013,30(6):930-934.
[8]韩军,张宏伟,霍丙杰.向斜构造煤与瓦斯突出机理探讨[J].煤炭学报,2008(8):908-913.
[9]高魁,刘泽功,刘健.瓦斯在石门揭构造软煤诱发煤与瓦斯突出中的作用[J].中国安全科学学报,2015,25(3):102-107.
[10]夏永军.掘进面断层附近瓦斯渗流场演化的数值分析[J].辽宁工程技术大学学报(自然科学版),2014,33(4):447-450.
[11]张浪,刘永茜.断层应力状态对煤与瓦斯突出的控制[J].岩土工程学报,2016,38(4):712-717.
[12]郝富昌,刘明举,魏建平,付永乾.重力滑动构造对煤与瓦斯突出的控制作用[J].煤炭学报,2012,37(5):825-829.
[13]刘春平.断层导致煤层突出危险性增大的原因分析及防治[C]//中国煤炭学会瓦斯地质专业委员会.瓦斯地质理论与实践---中国煤炭学会瓦斯地质专业委员会第五次全国瓦斯地质学术研讨会论文集.北京:中国煤炭学会瓦斯地质专业委员会,2005:3.
[14]谢雄刚,李希建,江泽标.基于断层模拟预测的煤与瓦斯突出防治技术[J].煤炭科学技术,2011(9):103-109.
[15]陈敏,张庆华,王麒翔.断层对煤与瓦斯突出范围的影响[J].煤炭科学技术,2014(3):39-44.
[16]魏国营,姚念岗.断层带煤体瓦斯地质特征与瓦斯突出的关联[J].辽宁工程技术大学报,2012(10):604-608.
[17]李守国,吕进国,姜耀东,姜文忠.逆断层不同倾角对采场冲击地压的诱导分析[J].采矿与安全工程学报,2014,31(4):869-875.
[18]赵志刚,谭云亮,程国强.煤巷掘进迎头煤与瓦斯突出的突变机制分析[J].岩土力学,2008(6):1644-1648.
[19]颜爱华,徐涛.煤与瓦斯突出的物理模拟和数值模拟研究[J].中国安全科学学报,2008(9):37-42.
[20]柯春培,严家平,徐胜平,童柳华.祁南煤矿小型断裂构造复杂程度与褶皱变形研究[J].煤炭科学技术,2013,41(5):113-116.
[21]谢和平,周宏伟,刘建锋,等.不同开采条件下采动力学行为研究[J].煤炭学报,2011,36(7):1067-1074.
[22]李建林,王乐华,等.卸荷岩体力学原理与应用[M].北京:科学出版社,2016:58-456.
[23]邓华锋,王哲,李建林,等.卸荷速率和孔隙水压力对砂岩卸荷特性影响研究[J].岩土工程学报,2017,39(11):1976-1983.