The design and disaster prevention of open-pit mining of mineral resources by bench blasting in cold regions have become key issues in the safe extraction of energy in Western China.In order to study the propagation mechanism of stress waves in the blasting process of a surface mine in plateau cold regions,the definition of ice-filled rock mass is given first,and the basic characteristics of ice-filled rock mass and its difference with frozen soil are defined.Secondly,the propagation process of stress waves in ice-filled rock mass is reproduced by RFPA2D-dynamic and wave peak migration visualization is achieved.At the same time,the reflection and transmission of stress waves at the interface between the cracked ice and the bedrock are analyzed.Furthermore,the influence of the quantity,spacing,and thickness of the cracked ice on the propagation process of stress waves is discussed.The numerical simulation results show that the propagation effect of the explosion stress waves is the best in intact bedrock,second in ice-filled rock mass,and the worst in air-filled cracked rock mass.Compared with the intact bedrock,the cracked ice existing in cracks reduces the stress wave amplitudes,and the attenuation of the stress waves in the rock rod model changes from 6.1% to 7.1%.The propagation of stress waves in the ice-filled rock mass is affected by the thickness and quantity of the cracked ice more than the,with a transmission coefficient of 0.925.When,the thickness and quantity of the cracked ice increases,the amplitude of the transmitted stress waves decreases.Take the attenuation degree of stress wave as y,it follows y=0.6527+0.03687x with the thickness of the cracked ice,and y=0.0715+0.0026x with the quantity of the cracked ice.The research results provide a theoretical research basis for blasting parameter design and disaster prevention of surface mine in plateau cold region.