水利学报2012，Vol.43Issue(3)：315-322,8.
湿度扩散诱发的节理岩体时效变形特性研究
Study on humidity diffusion induced time-dependent deformation of jointed rock mass
摘要
Abstract
Humidity may significantly influence the performance of rock mass.It not only weakens the physical and mechanical properties of rock mass,but also results in swelling deformation,which greatly enhances the time-dependent deformation of rock mass.In order to analyze the time-dependent deformation of joined rock mass under highly humid condition,a newly developed humidity-stress-damage coupling model is used to study the deformation of excavated tunnel,as well as the long term humidity diffusion and stress evolution processes in surrounding rock.By studying the deformation process,stress evolution and humidity diffusion of single and two groups of jointed rock mass,it further reveals the strengthening effect of joints on humidity diffusion and deformation of surrounding rock.The deformation at roof and floor indicates that high-humidity environment is one of the major reasons of floor heave.Humidity diffusion causes plenty of failures at the top and bottom of the tunnel,which results in greatly increasing of displacement on corresponding parts.In addition,the single group of joint plays a significant role on changing the direction of humidity diffusion,while multiple joints weaken this type of anisotropy.关键词
节理岩体/时效变形/湿度扩散/损伤演化Key words
jointed rock mass/time-dependent deformation/humidity diffusion/damage evolution分类
建筑与水利引用本文复制引用
唐世斌,唐春安..湿度扩散诱发的节理岩体时效变形特性研究[J].水利学报,2012,43(3):315-322,8.基金项目
国家重点基础研究发展计划973项目 （）
国家自然科学基金（51004020 （）
501174039） （）
中国博士后科学基金特别资助项目 （）
