裂隙岩体非稳态渗流场与损伤场耦合分析模型

Coupled analysis of unsteady state seepage field and damage field in fractured rock mass

本文从流体扩散能量迭加原理出发，建立了裂隙岩体介质的渗流张量解析表达式。综合应用断裂力学与损伤理论，探讨了复杂应力状态下裂隙岩体的本构关系以及压剪裂纹的起裂准则，建立了裂隙岩体在压剪、拉剪应力状态下损伤演化方程，提出了渗透张量随裂隙损伤发展的关系以及裂隙岩体非稳态渗流场与损伤场耦合模型。

Based on the principle of fluid diffusion energy superposition, an analytical expression formula of seepage tensor in the fractured rock mass medium is established. By using comprehensively the cracking mechanics and damage theory, the structural relation of fractured rock mass under the complicated stress state and the rule of crack starting of Compresso shear shear fractures are probed into, the damage evolution equations of fractured rock mass under compresso shear and tenso shear conditions are established, and the relation between seepage tensor and the development of fracture and damage, and the coupled model of unsteady state seepage field and damage field in fractured rock mass are put forward.