The formation mechanism and failure mode of a talus slope induced by rockfalls in Nayong County, Southwest China

Hillslope processes and mass movement are key issues in the analysis evaluation of geological disasters mountainous regions. A rockfall-dominated talus slope exhibits a typical outcrop–talus system as product detached boulders rock fragments. The Zongling rockfall zone is one most active systems southwest China, it provides representative case study on assessment hazards at base slopes. In this article, formation mechanism failure mode rock-talus were studied using field investigation, remote sensing image analysis, numerical simulation. findings reveal that lithology structure site controlling factors for outcrop retreat progressive development deposits. This process intensified by rainfall mining activities. Boulder accumulation platform middle section serves top loading mechanical system. During boulder–ground interaction, impact acts toe cutting to change geometry balance slope. It was found significantly influenced stability, which led decrease antisliding force induced rockfalls occurred with combined effect prevention mitigation region, government residents should consider geodisaster chain, relates slopes, addition risk damage due trajectory.