The regional rockfall susceptibility of road based on 267 rockfall events in Tai-Hang Mountains, China

Abstract Rockfall disasters are widely developed along highways in Tai-hang Mountains. The rockfall is difficult to predict effectively because of its sudden, which brings great threat to traffic. Therefore, it is of great significance to assess the susceptibility of rockfall areas and the hazard of rockfall. The Tai-hang Mountains highways along the high and steep rock slope were regarded as the object in this paper, 267 rockfall points had been obtained through field investigation from 2020–2022. And the susceptibility of rockfall was conducted according to the topography, geomorphology, lithology, river, and structure. On this basis, the rockfall susceptibility method based on the survey data has been put forward. The tendency of rockfall along the highway in Tai-hang Mountains was conducted by this method. The research results have reference significance for the evaluation of rockfall disasters in mountainous areas, and can provide a basis for rockfall prevention.