###### Abstract
[9] used CT scanning technology to study the change process of the pore structure in the freeze-thaw cycle of Spanish dolomite at \(-15\)-\(10\)\({}^{\circ}\)C and found that the rock samples began to present with fragmentation after seven cycles of freezing and thawing; furthermore, the formation of penetrating cracks occurred after twelve cycles. Numerous scholars have conducted indoor tests and numerical simulations on the internal structure parameters of ambient soil-stone mixtures, such as stone content, grain size, water content, and block distribution, and in addition to the internal factors, the mechanical properties of soil-stone mixtures are also affected by environmental factors, such as rainfall, groundwater, freezing-thawing cycles, etc. Although research on soil-stone mixtures is constantly expanding in regard to depth, there are not yet many studies on the physical and mechanical properties and deformation and damage characteristics of soil-stone mixtures under the action of freezing and thawing cycles. [PERSON] et al. [10] modeled room-temperature soil-rock mixtures and frozen soil-rock mixtures, and their comparative tests showed that the shear modulus of soil-rock mixtures gradually increased with the increase in rock content, and the shear modulus of frozen soil-rock mixtures was nearly 3.7 times higher than that of room-temperature soil-rock mixtures. [PERSON] et al. [11] conducted indoor triaxial tests on soil-rock mixtures with different numbers of freeze-thaw cycles and simulated them using PFC3D, and the results showed that the freeze-thaw cycles weakened the strength of soil-rock mixtures, and their modulus of elasticity and shear strength showed a decreasing trend. [PERSON] et al. [12]. investigated the damage mechanism of soil-rock mixtures with different stone contents under freeze-thaw cycles, observing that the elastic modulus and shear strength of soil-rock mixtures decreased after undergoing freeze-thaw cycles. This was determined through indoor triaxial tests and numerical simulation using particle flow software (PFC5.0), and the extent of the decrease in the elastic modulus and shear strength varied according to the different stone contents; ultimately, the damage of soil-rock mixtures with 55% stone content was the most serious. [PERSON] et al. [13] simulated the deformation process of slopes during the freeze-thaw process using a slope model simulation test and found that the factors affecting the stability of slopes are the number of freeze-thaw cycles, thaw depth, freeze-thaw time, slope gradient, and water content. [PERSON] [14] analyzed the stability of slopes under freezing and thawing using the finite element method; [PERSON] et al. [15] used the Monte Carlo calculation method; and [PERSON] et al. [16] used the finite element strength discounting method. [PERSON] [17] investigated the variation in thermophysical parameters with temperature in granite and sandstone and found that when the temperature is in the range of 40-160 \({}^{\circ}\)C, it has little effect on the thermal conductivity of the rock, but the heat capacity and thermal expansion coefficient increase with the increase in temperature. The slope stability problem is one of the important branches in the field of rock engineering. Scholars both domestic and abroad mainly focus on the slope stability of open-pit mines in terms of the landslide mode and destabilization criterion [18; 19; 20], quantification of slope stability, and stability analysis method [21; 22; 23; 24], slope stability, and parameter selection under different influencing factors [25; 26], slope support and engineering reinforcement measures [27; 28; 29], etc. At present, there are extensive technical experience and scientific research results on the stability of conventional rocky slopes, but there is still a lack of research on the stability of slopes in open-pit mines in cold regions.