Abstract: The seasonal frost heaving hazards of the electrical power transmission and transformation projects in western Inner Mongolia are evaluated. This paper analyzes factors that might potentially cause and influence the seasonal soil frost heave are presented. Based on the regional topography, hydrometeorology, stratum lithology, groundwater level and other aspects, along with the field survey sampling results and the regional engineering original data, the regional frost heaving grade trend distribution map was developed. At the same time, according to the literature research and the characteristics of frozen soil in the western Inner Mongolia, several measures to prevent frost are proposed. This paper provides some significance to the study of the electrical power construction, site selection and alignment selection of electrical power facilities in the region of seasonal frost heaving soils in western part of Inner Mongolia.

Key words: frost heaving soils, trend zone for frost heave, seasonal frozen soils, frost heaving hazards mitigations, power transmission engineering