冻土地基温度场数值模拟研究

High-temperature frozen earth is perennial frozen earth which temperature changes with seasons .The soil in certain depth of earth surface frozen in winter and thaw in summer.In a background of climate warming, perennial frozen earth degradation intensifies.High-temperature frozen earth will appear in winder range.Therefore engineering in perennial frozen earth area will encounter more and more High-temperature frozen earth. Based on the existing research, use numerical simulation calculaton and analysis which considering the significant influence factors that temperature changes over time as boundary conditions. Draw the relationship and variation between external boundary conditions with ground temperature field and its stability.