【摘要】 假设坝体岩土为双孔隙度介质,分析了坝体在流体孔隙压力变化和地应力的耦合作用下力学性能的变化和渗透性的演变规律。通过研究流体在岩土层内流动的规律、岩体变形以及力学强度的变化情况,为坝体稳定性与安全性提供参考。建立了基于流体运动、岩体骨架变形以及渗透率变化的数学模型,并根据模型分析地压与渗透率(孔隙度)变化的规律,为解决工程中的坝体稳定性问题提供理论参考。更多还原

【Abstract】 The rock of the dam is supposed to be dual-porosity medium and pore pressure in fracture and micro-pores are coupled with the stress in dam.The evolution of the permeability is studied by analyzing the hydraulic pressure and the deformation of the rock.Mathematical models are built to quantify the fluid flow,the deformation of rock skeleton and the net change of permeability.The relations between the pore pressure and permeability(porosity)are also been analyzed and they offer new ideas to solve dam stability problems in engineering.更多还原