岩土力学2011，Vol.32Issue(12)：3743-3750,8.
裂隙贯通率对双重孔隙介质热-水-应力耦合现象影响的有限元分析
Finite element analyses of effects of fracture continuity rate on thermo-hydro-mechanical coupling in dual-porosity medium
摘要
Abstract
In order to probe into the effects of fracture continuity rate on coupled temperature field, seepage field and stress field, using the coupled thermo-hydro-mechanical model of dual-porosity medium for ubiquitous-joint rock mass established by the authors and taking a hypothetical nuclear waste repository located in an unsaturated stratum as a calculation example, the two-dimensional finite element analyses were carried out for four cases in which the continuity rates of fracture and pore are different; and the temperatures, negitive pore and fracture water pressures, flow velocities of groundwater, permeability correction factors for pore and fracture and stresses in the surrounding rock mass were investigated in the numerical simulation. The results show that the stiffness of dual-porosity medium is changed because of using different fracture continuity rates; so the state and level of stresses in the rock mass are modified, and then the porosity and permeability of pore and fracture are altered; therefore the variations of values, distributions of pore and fracture pressures as well as water flow velocities are caused.关键词
裂隙贯通率/双重孔隙-裂隙介质/热-水-应力耦合/有限元分析Key words
fracture continuity rate/ dual-porosity medium/ thermo-hydro-mechanical coupling/ finite element analysis分类
数理科学引用本文复制引用
张玉军,张维庆..裂隙贯通率对双重孔隙介质热-水-应力耦合现象影响的有限元分析[J].岩土力学,2011,32(12):3743-3750,8.基金项目
国家自然科学基金资助项目(No.51079145) （No.51079145）
国家重点基础研究发展计划(973)资助项目(No.2010CB732101). （973）
