The invention discloses an
aerogel felt performance evaluation method applied to frozen soil heat insulation, and relates to the technical field of frozen soil environment, and the method comprises the following steps: under a controlled one-dimensional
heat transfer condition, determining corrected
heat flux density acting on an
aerogel felt sample; calculating to obtain equivalent
thermal resistance of the
aerogel felt sample in corresponding compaction and
contact states; constructing a frozen soil interface temperature prediction model, and calculating to obtain a frozen
soil temperature margin; constructing an equivalent
heat flux model, and calculating a corresponding equivalent frozen soil interface temperature and an
equivalent temperature margin; constructing a degradation
thermal resistance model, correcting the equivalent
thermal resistance to obtain degradation thermal resistance, and further calculating a thermal risk amplification coefficient; and calculating and constructing a normalized safety evaluation index based on the degradation temperature margin. According to the method, the
engineering thermal load, the aerogel felt equivalent thermal resistance, the
thermal load fluctuation conversion and the water-containing degradation effect are uniformly incorporated into the same evaluation chain, so that the conversion from a single material parameter to an
engineering applicability index is realized.