岩石剪切破坏过程的能量耗散和释放研究
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摘要
地下工程的特殊地质环境和岩石自身的构造(存在微裂隙)决定了岩石的破坏主要以压剪破坏为主.而地下硐室的破坏如岩爆等也以剪切型破坏为主.剪切型裂纹与张性裂纹的不同使得岩石破坏时释放出较大的能量.岩石破坏过程中自身力学参数的弱化,使得应力应变关系并不能准确反映岩石变形破坏的本质.因此,以能量的耗散和释放原理,分析了岩石变形破坏过程中的能量变化,并以单轴压剪破坏为例研究了岩石破坏过程的各种能量的传递、转化关系,计算了压剪破坏后岩石释放的各种能量所占总变形能的比例,对认识硐室围岩应力重分布后积聚的可释放变形能的能量分配,硐室发生岩爆时动能大小及岩爆的量级,具有一定指导意义.
The special geological environment and the construction of the rock decide that the shear failure is the most common failure mode.And the failure of the underground cavity such as rock burst is also damaged as shear failure.The shear crack is different from the tensile crack in that the rock can release a large amount of energy at the shear failure mode.The weakening of the mechanical parameters in the failure process makes the relationship of the strain-stress can't reflect the essence of the deformation and failure.Consequently,research on the deformation and failure process of rock used by energy is important.Based on the theory of energy dissipation and energy release,we study the energy changes and take the uniaxial compression shear failure as an example to study the transmission relationship of the kinds of energy,compute the proportion of the kinds of energy released after the rock failure.The study is significant in realizing the proportion of the kinds of energy after the stress re-distribution and the magnitude of the kinetic energy and the rock burst.
The special geological environment and the construction of the rock decide that the shear failure is the most common failure mode.And the failure of the underground cavity such as rock burst is also damaged as shear failure.The shear crack is different from the tensile crack in that the rock can release a large amount of energy at the shear failure mode.The weakening of the mechanical parameters in the failure process makes the relationship of the strain-stress can't reflect the essence of the deformation and failure.Consequently,research on the deformation and failure process of rock used by energy is important.Based on the theory of energy dissipation and energy release,we study the energy changes and take the uniaxial compression shear failure as an example to study the transmission relationship of the kinds of energy,compute the proportion of the kinds of energy released after the rock failure.The study is significant in realizing the proportion of the kinds of energy after the stress re-distribution and the magnitude of the kinetic energy and the rock burst.
引文
[1]HOEK E,BROWN E T.岩石地下工程[M].连志升,译.北京:冶金工业出版社,1986.
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[3]杨淑清.隧洞岩爆机制物理模型试验研究[J].武汉水利电力大学学报,1993,26(2):160-166.YANG Shu-qing.Physical model test study on themechanism of tunnel rock burst[J].EngineeringJournal of Wuhan University,1993,26(2):160-166.
[4]朱维申,李术才,程峰.能量耗散模型在大型地下洞群施工顺序优化分析中的应用[J].岩土工程学报,2001,23(3):333-336.ZHU Wei-shen,LI Shu-cai,CHENG Feng.Applica-tion of energy dissipation model to optimization ofconstruction order for large underground caverns[J].Chinese Journal of Geotechnical Engineering,2001,23(3):333-336.
[5]朱维申,程峰.能量耗散本构模型及其在三峡船闸高边坡稳定性分析中的应用[J].岩石力学与工程学报,2000,19(3):261-264.ZHU Wei-shen,CHENG Feng.Constitutive modelof energy dissipation and its application to stability a-nalysis of ship-lock slope in Three Gorges Project[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(3):261-264.
[6]潘岳,王志强.岩体动力失稳的功能增量-突变理论研究方法[J].岩石力学与工程学报,2004,23(9):1433-1438.PAN Yue,WANG Zhi-qiang.Research approach onincrement of work and energy-catastrophe theory ofrock dynamics destabilization[J].Chinese Journal ofRock Mechanics and Engineering,2004,23(9):1433-1438.
[7]潘岳,张孝伍.狭窄煤柱岩爆的突变理论分析[J].岩石力学与工程学报,2004,23(11):1797-1803.PAN Yue,ZHANG Xiao-wu.Catastrophe theory a-nalysis on rock burst in narrow coal pillar[J].Chi-nese Journal of Rock Mechanics and Engineering,2004,23(11):1797-1803.
[8]尤明庆,华安增.岩石试样破坏过程的能量分析[J].岩石力学与工程学报,2002,21(6):778-781.YOU Ming-qing,HUA An-zeng.Energy analysis offailure process of rock specimens[J].Chinese Journalof Rock Mechanics and Engineering,2002,21(6):778-781.
[9]谢和平,彭瑞东,鞠杨.岩石变形破坏过程中的能量耗散分析[J].岩石力学与工程学报,2004,23(21):3565-3570.XIE He-ping,PENG Rui-dong,JU-Yang.Energydissipation of rock deformation and fracture[J].Chi-nese Journal of Rock Mechanics and Engineering,2004,23(21):3565-3570.
[10]谢和平,鞠杨,黎立云.基于能量耗散与释放原理的岩石强度与整体破坏准则[J].岩石力学与工程学报,2005,24(17):3003-3010.XIE He-ping,JU Yang,LI Li-yun.Criteria forstrength and structural failure of rocks based on en-ergy dissipation and energy release principles[J].Chinese Journal of Rock Mechanics and Engineer-ing,2005,24(17):3003-3010.
[11]唐春安.岩石破裂过程中的灾变[M].北京:煤炭工业出版社,1993.
[12]陈卫忠,李术才,朱维申,等.考虑裂隙闭合和摩擦效应的节理岩体能量损伤理论与应用[J].岩石力学与工程学报,2000,19(2):131-135.CHEN Wei-zhong,LI Shu-cai,ZHU Wei-shen,etal.Energy damage model of jointed rockmass withjoint closing and friction considered and its applica-tion[J].Chinese Journal of Rock Mechanics and En-gineering,2000,19(2):131-135.
[13]刘泉声,王崇革.岩石时-温等效原理的理论与实验研究-第一部分:岩石时-温等效原理的热力学基础[J].岩石力学与工程学报,2002,21(2):193-198.LIU Quan-shegn,WANG Chong-ge.Theoreticaland experimental study on time-temperature equiva-lent principle for rock[J].Chinese Journal of RockMechanics and Engineering,2002,21(2):193-198.
[14]喻勇,张宗贤,俞洁,等.岩石拉伸破坏中的能量耗散及损伤特征[J].岩石力学与工程学报,1998,17(4):386-392.YU Yong,ZHANG Zhong-xian,YU Jie,et al.E-volution and propagation of material defects andKaiser effect function[J].China Journal of Mechan-ics and Enginecring,1998,17(4):386-392.
[15]ATERKINSON B K.岩石断裂力学[M].尹祥出,修济刚,译.北京:地震出版社,1994.
[2]谭以安.岩爆形成机理研究[J].水文地质工程地质,1989(1):34-38.TAN Yi-an.Research on forming mechanism of rockburst[J].Hydrogeology and Engineering Geology,1989(1):34-38.
[3]杨淑清.隧洞岩爆机制物理模型试验研究[J].武汉水利电力大学学报,1993,26(2):160-166.YANG Shu-qing.Physical model test study on themechanism of tunnel rock burst[J].EngineeringJournal of Wuhan University,1993,26(2):160-166.
[4]朱维申,李术才,程峰.能量耗散模型在大型地下洞群施工顺序优化分析中的应用[J].岩土工程学报,2001,23(3):333-336.ZHU Wei-shen,LI Shu-cai,CHENG Feng.Applica-tion of energy dissipation model to optimization ofconstruction order for large underground caverns[J].Chinese Journal of Geotechnical Engineering,2001,23(3):333-336.
[5]朱维申,程峰.能量耗散本构模型及其在三峡船闸高边坡稳定性分析中的应用[J].岩石力学与工程学报,2000,19(3):261-264.ZHU Wei-shen,CHENG Feng.Constitutive modelof energy dissipation and its application to stability a-nalysis of ship-lock slope in Three Gorges Project[J].Chinese Journal of Rock Mechanics and Engineering,2000,19(3):261-264.
[6]潘岳,王志强.岩体动力失稳的功能增量-突变理论研究方法[J].岩石力学与工程学报,2004,23(9):1433-1438.PAN Yue,WANG Zhi-qiang.Research approach onincrement of work and energy-catastrophe theory ofrock dynamics destabilization[J].Chinese Journal ofRock Mechanics and Engineering,2004,23(9):1433-1438.
[7]潘岳,张孝伍.狭窄煤柱岩爆的突变理论分析[J].岩石力学与工程学报,2004,23(11):1797-1803.PAN Yue,ZHANG Xiao-wu.Catastrophe theory a-nalysis on rock burst in narrow coal pillar[J].Chi-nese Journal of Rock Mechanics and Engineering,2004,23(11):1797-1803.
[8]尤明庆,华安增.岩石试样破坏过程的能量分析[J].岩石力学与工程学报,2002,21(6):778-781.YOU Ming-qing,HUA An-zeng.Energy analysis offailure process of rock specimens[J].Chinese Journalof Rock Mechanics and Engineering,2002,21(6):778-781.
[9]谢和平,彭瑞东,鞠杨.岩石变形破坏过程中的能量耗散分析[J].岩石力学与工程学报,2004,23(21):3565-3570.XIE He-ping,PENG Rui-dong,JU-Yang.Energydissipation of rock deformation and fracture[J].Chi-nese Journal of Rock Mechanics and Engineering,2004,23(21):3565-3570.
[10]谢和平,鞠杨,黎立云.基于能量耗散与释放原理的岩石强度与整体破坏准则[J].岩石力学与工程学报,2005,24(17):3003-3010.XIE He-ping,JU Yang,LI Li-yun.Criteria forstrength and structural failure of rocks based on en-ergy dissipation and energy release principles[J].Chinese Journal of Rock Mechanics and Engineer-ing,2005,24(17):3003-3010.
[11]唐春安.岩石破裂过程中的灾变[M].北京:煤炭工业出版社,1993.
[12]陈卫忠,李术才,朱维申,等.考虑裂隙闭合和摩擦效应的节理岩体能量损伤理论与应用[J].岩石力学与工程学报,2000,19(2):131-135.CHEN Wei-zhong,LI Shu-cai,ZHU Wei-shen,etal.Energy damage model of jointed rockmass withjoint closing and friction considered and its applica-tion[J].Chinese Journal of Rock Mechanics and En-gineering,2000,19(2):131-135.
[13]刘泉声,王崇革.岩石时-温等效原理的理论与实验研究-第一部分:岩石时-温等效原理的热力学基础[J].岩石力学与工程学报,2002,21(2):193-198.LIU Quan-shegn,WANG Chong-ge.Theoreticaland experimental study on time-temperature equiva-lent principle for rock[J].Chinese Journal of RockMechanics and Engineering,2002,21(2):193-198.
[14]喻勇,张宗贤,俞洁,等.岩石拉伸破坏中的能量耗散及损伤特征[J].岩石力学与工程学报,1998,17(4):386-392.YU Yong,ZHANG Zhong-xian,YU Jie,et al.E-volution and propagation of material defects andKaiser effect function[J].China Journal of Mechan-ics and Enginecring,1998,17(4):386-392.
[15]ATERKINSON B K.岩石断裂力学[M].尹祥出,修济刚,译.北京:地震出版社,1994.
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