风火山隧道空气与围岩对流换热和围岩热传导耦合问题的三维非线性分析  

Three-dimensional nonlinear analysis for coupled problem of heat transfer of surrounding rock and heat convection between air in Fenghuo Mountain tunnel and surrounding rock

作　　者：张学富[1] 王成[1] 喻文兵[2] 刘志强[2] 

机构地区：[1]重庆交通学院土木建筑学院,重庆400074 [2]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州730000

出　　处：《岩土工程学报》2005年第12期1414-1420,共7页Chinese Journal of Geotechnical Engineering

基　　金：重庆交通学院启动基金资助项目;交通部公路科学研究所预研基金资助项目(2005–9101);国家杰出青年科学基金资助项目(40225001);国家自然科学基金资助项目(40171019);国家自然科学基金资助项目(40401010);国家自然科学基金特殊学科人才培养资助项目(J0130084)

摘　　要：根据流体力学、冻土学和传热学的基本理论,建立了寒区隧道空气与围岩对流换热和围岩热传导耦合问题的三维计算模型,用Galerkin法进行了有限元分析,进一步编制了有限元计算程序。运用该计算程序对青藏铁路风火山隧道空气与围岩对流换热和围岩热传导耦合问题进行了三维非线性分析。结果表明:运用该计算模型和有限元计算程序,在不知道寒区隧道内气温的情况下,能够正确预测围岩的冻融状态,从而节约现场观测隧道内气温的费用。According to the essential theories of heat transfer, geocryology and hydraulics, taking the coupled problem of the heat transfer of the rock surrounding the tunnel and the heat convection between the air in the tunnel and the rock surrounding the tunnel into account, three-dimensional calculating model of the coupled problem were presented, the finite element formulae of this problem were obtained by Galerkin＇s method, and the computer program of the finite element was compiled. Using the program, three-dimensional nonlinear analysis for the coupled problem of the heat transfer of the rock surrounding the tunnel and the heat convection between the air in the tunnel and the rock surrounding Fenghuo mountain tunnel on Qinghai-Tibet Railway was made. The results show that the thawing-freezing situation of the rock surrounding the tunnel can correctly be forecasted without the knowedge of the inside air temperature of the tunnel. Therefore, the great cost of field observation for the air temperature in the tunnel can be saved.

关 键 词：温度场 水份场 对流换热 耦合问题 三维非线性分析 

分 类 号：U459.1[建筑科学—桥梁与隧道工程] TQ336.1[交通运输工程—道路与铁道工程]