Analysis of Slope Stability and Treatment Measures for a Highway in Southern Shaanxi

A typical third level slope in the southern Shaanxi region experienced large-scale collapse during treatment construction. Failure to timely protect after excavation was the direct cause of slope instability, while continuous heavy rainfall in autumn was the indirect cause of slope collapse. The strength reduction method and numerical software were used for calculation and analysis. The results show that the slope unloading and the use of single anchor point prestressed anchor cable anti-slip pile reinforcement at the first level platform has the best treatment effect. The comprehensive analysis adopts a treatment plan of graded slope unloading, single anchor point prestressed anchor cable anti-skid pile, comprehensive drainage system, and greening measures. Real time monitoring of surface displacement, deep displacement, groundwater level, video monitoring, and other aspects of the slope can effectively monitor slope stability and ensure highway operation safety. The research results have a certain reference value for similar slope treatment.