This study focused on a catastrophic post-earthquake rockslide in Wenchuan, Southwestern China. On-site investigations and aerial photography were used to ascertained the basic landslides characteristics. A 3D discrete element method with discrete fracture network was employed to assess the dynamic process of the rockslide. The effects of fractures density and friction angle on kinetic characteristics were analyzed, and the role of the check dam as a prevention work has been verified.

Indicators contain observable and measurable characteristics to understand the state of a concept or phenomenon and/or monitor it over time. There have been limited efforts to understand how indicators are being used in multi-hazard and multi-risk contexts. We find most of existing indicators do not include the interactions between hazards or risks. We propose a set of recommendations to enable the development and uptake of multi-hazard and multi-risk indicators.