摘要
利用多孔介质热运移理论及达西模拟建立的考虑地下水流时冻结峰面发展的数学模型 ,采用数值计算法 ,分析了冻结过程中温度场及地下水流场的变化规律 ;获得了冻结孔布置间距极限值与地下水流速、饱和砂原始温度、冻结管外表面温度、冻结管管径及未冻饱和砂导热系数间的定量关系 ;干密度、含水率与比热不影响冻结孔布置间距极限值大小 ,但影响冻结壁发展快慢。
Established the mathematical model of development of frozen wall considering the groundwater flow with theory of thermal transport in porous media and Darcy flow model. The variation of the temperature field and the flow field was analyzed by the numerical calculation. Obtained the quantitative relation of the limited space of freezing pipes with the flowing velocity,the initial temperature,the surface temperature of freezing pipes,the radius of freezing pipes and the thermal conductivity of the unfrozen region.The dry density,the water content and the specific heat didn't effect the limited space of freezing pipes, but affected frozen wall proceeding velocity.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2001年第2期167-171,共5页
Chinese Journal of Geotechnical Engineering
基金
煤炭科学基金!资助项目 (97建 1 0 70 4 )
南京林业大学校引进人才基金!资助项目 (2 0 0 0 - 0 50 1Y)
关键词
地下水
流速
温度
冻结壁
多孔介质
数值计算
velocity of groundwater flow
frozen wall
temperature
porous media
numerical calculation
