岩石变形破坏过程的能量演化研究进展

Research Progress on Energy Evolution in the Process of Rock Deformation and Failure

能量演化贯穿于岩石变形破坏全过程,基于能量角度的岩石强度与变形特性的研究,深入揭示其物理力学本质,并合理搭建理论分析至实际工程应用的桥梁。本文系统总结数十年来国内外对于不同应力状态、不同应力路径和不同加载速率下岩石的静动态能量演化规律和分配关系及尺寸、含水率、孔隙率等因素对其的影响;归纳了基于能量原理的岩石强度准则、损伤演化及本构关系、疲劳寿命预测及岩爆预测等方面的应用成果。并建议把岩石变形破坏能量演化中的微细观机制与宏观力学行为的关联性、能量演化本构理论、工程岩体稳定性、多能量场耦合作为进一步研究方向。

Energy evolution runs through the whole process of rock deformation and failure.The study of rock strength and deformation characteristics based on energy perspective can deeply reveal its physical and mechanical nature and reasonably build a bridge from theoretical analysis to practical engineering application.This article systematically su mmarizes at home and abroad in the past dozens of years for different stress condition and stress path and the evolution of rock under different loading rate,static and dynamic energy law,distribution relations,and its influencing factors;This article su mmarizes the rock brittleness index based on energy principle,strength criterion,damage evolution and the constitutive relation,and fatigue life prediction and prediction of rock burst in the application.And it suggests that the relationship between micro mechanism and macroscopic mechanical behavior in the energy evolution of rock deformation and failure,the constitutive theory of energy evolution,the stability of engineering rock mass and the coupling of multiple energy fields should be taken as the further research directions.