A fraction of the pore water of a soil body undergoes a phase change during the freezing process. Therefore, the
electrical resistivity properties of frozen soils are different from those of unfrozen soils. To thoroughly investigate
the conductive properties of frozen soils, a theoretical model for the electrical resistivity of frozen soils was deduced
and established, and the factors that affect the electrical resistivity of frozen soils were analyzed. Through
experiments performed on frozen clay, the characteristics of the effects of the unfrozen water content, initial
water content, soil temperature and dry density on the electrical resistivity of a frozen soil were analyzed. The
model for the electrical resistivity of frozen soils indicates that the electrical resistivity exhibits a temperaturedependent
inverse proportionality with the unfrozen water content of the soil body; the electrical resistivity of
a frozen soil exhibits a complex temperature-related functional relationship with the initial water content; the
electrical resistivity of a frozen soil is exponentially related to the soil temperature; and the electrical resistivity
of a frozen soil is inversely proportional to the dry density of the soil body. The results of the experiments performed
on frozen clay verify the reasonableness of the proposed model for the electrical resistivity of frozen soils.