巷道围岩间隔性区域断裂破坏的能量方法分析
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摘要
通过真三轴试验证明了卸载可能会使岩石内产生拉应力;讨论了岩石间隔性区域断裂过程中能量转化与岩石破坏的内在机制。指出岩石间隔性区域断裂是岩石在能量耗散与能量转化下的综合结果。能量耗散使岩石产生损伤,并导致岩性劣化;能量转化则是引发岩石拉伸破坏的内在原因。推导了岩石间隔性区域断裂半径的计算公式。
That unloading may lead to the tensile stress in rock is demonstrated by true triaxial pressure experiment.The intrinsic mechanism of energy conversion and failure process in the intermittent regional fracture process of rock is discussed.It is pointed out that the rock intermittent regional fracture is a composite result of rock energy dissipation and conservation.Energy dissipation leads to rock damage and lithologic deterioration while energy conversion is the internal cause for rock tensile fracture.The analytical formula for the radius of intermittent zonal fracture process of rock is deduced.
That unloading may lead to the tensile stress in rock is demonstrated by true triaxial pressure experiment.The intrinsic mechanism of energy conversion and failure process in the intermittent regional fracture process of rock is discussed.It is pointed out that the rock intermittent regional fracture is a composite result of rock energy dissipation and conservation.Energy dissipation leads to rock damage and lithologic deterioration while energy conversion is the internal cause for rock tensile fracture.The analytical formula for the radius of intermittent zonal fracture process of rock is deduced.
引文
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[4]华安增·地下工程周围岩体能量分析[J]·岩石力学与工程学报,2003,22(7):1054-1059.
[5]Курлееня М В,Опарин В Н,Рева В Н,и др·К вопросу о факторе времени при разрушении горных пород[J]·ФТПРПИ,1993(5):3-13·
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[7]贺永年,韩立军,邵鹏,等·深部巷道稳定的若干岩石力学问题[J]·中国矿业大学学报,2006,35(3):288-295.
[8]林鹏,陈忠辉·二岩体系统破坏全过程的数值模拟和实验研究[J]·地震,1999,19(4):413-418.
[9]潘岳,王志强,昊敏应·岩体动力失稳终止点、能量释放量解析解与图解[J]·岩土力学,2006,27(11):1915-1921.
[10]蒋斌松,韩立军,贺永年·深部岩体变形的混沌预测方法[J]·岩石力学与工程学报,2005,24(16),2934-2940.
[11]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.
[12]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.
[13]谢和平,彭瑞东,鞠杨,等·岩石破坏的能量分析初探[J]·岩石力学与工程学报,2005,24(15),2603-2608.
[14]赵阳升,冯增朝,万志军·岩体动力破坏的最小能量原理[J]·岩石力学与工程学报,2003,22(11),1781-1783.
[15]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.
[16]华安增·地下工程周围岩体能量分析[J]·岩石力学与工程学报,2002,22(7),1054-1059.
[17]尤明庆,华安增·岩石试样的三轴卸围压试验[J]·岩石力学与工程学报,1998,17(1):24-29.
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