本文研究了用线热源法测定冻土导热系数的可行性.指出了只要适当控制线热源的加热功率,就可以保证在测试过程中试件始终处于负温状态,避免冻土的熔化,从而能够准确地得到冻土的导热系数,这一研究开拓了线热源法的应用范围. In this paper, the feasibility of determining the thermal conductivity of frozen soil by the line heat source method is studied. It is pointed out that as long as the heating power of the line heat source is properly controlled, it can be ensured that the test piece is always in a negative temperature state and the melting of the frozen soil is avoided during the test. Accurately obtain the thermal conductivity of frozen soil, this research has opened up the scope of application of line heat source method.