论文部分内容阅读
导热系数表征物体内部较热部分向较冷部分传递热量的能力,冻土导热系数是冻土区天然温度场变化研究和土木建筑热工计算中的重要指标.介绍了冻土导热系数热流计法测试的仪器设备和试验方法,对取自大兴安岭多年冻土带的5种典型扰动土料,分别进行冻融两种状态下热流计法模拟试验.通过回归分析,得到估计这5种冻土导热系数的经验公式,同时分析了影响冻土导热系数的一些因素和规律.
Thermal conductivity characterization of the hot part of the object to the cooler part of the transfer of heat capacity of the thermal conductivity of frozen soil permafrost zone is the natural temperature field changes in civil engineering and thermal calculation of an important indicator of the introduction of the thermal conductivity of frozen soil heat flow meter method Test equipment and test methods, five kinds of typical disturbed soil samples taken from the permafrost zone in Daxinganling were respectively simulated by the heat flowmeter method under the two conditions of freeze-thaw cycle.According to regression analysis, it was estimated that the five kinds of frozen soil thermal conductivity Coefficient of empirical formula, at the same time, analysis of some factors and laws affecting the thermal conductivity of frozen soil.