Study on Frozen Soil Slope Disease and Influencing Factors in Qinghai-Tibet Highway

Zhuodong Lin

Chongqing Jiaotong University, Chongqing, 400074, China

Abstract: According to the investigation and investigation of the actual engineering in Naqu area, this paper discusses the main reasons for the instability of the fill slope and the factors that affect the freeze-thaw instability of the fill slope. The main forms of frozen soil slope diseases are hot melt slump, freezing Expansion and rupture, as well as support damage and local landslides. The main factors affecting slope stability are slope soil quality, slope, water content, groundwater seepage, slope morphology, temperature, and number of freeze-thaw cycles. Through the study of the causes of various diseases, the methods of dealing with the diseases are summarized, and the theoretical experience is provided for the design, construction, and maintenance of highways in frozen regions.

Keywords: Permafrost slope; Instability; Influencing factors; Treatment method