Analysis on the characteristics of loess collapsibility in loess plateau, Northern Shaanxi province

摘要

Collapsible loess is widely spread in Loess Plateau, northern Shaanxi province. The constructional damage due to side slope and irrigation will be caused if the loess doesn't deal with properly. Based on the analysis features of loess collapsibility and numbers of lab tests, this paper presents the relationship between loess structural parameters and confining pressure, as well water content and porosity ratio. The relevant loess structural parameters were obtained by fitting method. The loess collapsibility characteristics were analyzed with different confining stress, soil water content and porosity ratio. The main triggering factors of loess collapse were also analyzed. The results can further give the scientific evidence when dealing with the collapsible loess.