水力发电2017，Vol.43Issue(11)：19-22,47,5.
寒区引水隧洞低温相变温度场-渗流场耦合模型及其数值模拟研究
Study on Temperature-Seepage Field Coupling Model and Its Numerical Simulation for Diversion Tunnel in Cold Area under Low Temperature and Phase Transition
摘要
Abstract
In view of the multi-field coupling problem of surrounding rock frost heave of diversion tunnel in cold area,the finite element method is employed to analyze the freezing process and the variation laws of temperature field and seepage characteristics of surrounding rock for the diversion tunnel of a hydropower station in Xinjiang.In the study,the influences of low temperature and phase transition on temperature and seepage fields of rock mass are considered and the temperature-seepage field coupling model is used.The results show that the frozen area and no frozen area are formed in surrounding rock during long-time freezing process,and with the increase of freezing time,the freezing thickness and freezing range of surrounding rock are increasing.Due to the segregation potential,the water in water-bearing rock mass is transferred to frozen area from nofrozen area during freezing period.The seepage flow velocity is increased to maximum of 1.359 × 10-4 m/s at frozen edge,and is reduced to minimum of 4.1 × 10-6 m/s at no-frozen area.关键词
寒区/引水隧洞/低温相变/冻结/温度场-渗流场耦合Key words
cold area/diversion tunnel/low temperature and phase transition/freeze/temperature-seepage field coupling分类
建筑与水利引用本文复制引用
姜海波,貊祖国,后雄斌,金瑾..寒区引水隧洞低温相变温度场-渗流场耦合模型及其数值模拟研究[J].水力发电,2017,43(11):19-22,47,5.基金项目
国家自然科学基金项目(51408377) （51408377）
石河子大学杰出青年科技人才培育计划(2015ZRKXJQ06) （2015ZRKXJQ06）
