Rockfall Impact Energy and Trajectory Study for Rockfall Hazard Mitigation in Nepal = Rockfall Impact Energy and Trajectory Study for Rockfall Hazard Mitigation in Nepal

다국어 초록 (Multilingual Abstract)

Low-cost slope mitigation practices are usually well practiced in Nepal. Among them, gabion and stone masonry retaining walls are very much common mitigation practices for landslide in Nepal. Such protection systems are good for shallow soil slope failure and erosion control only, Suitable system for rockfall protection is not well practiced till date. Some initiatives have been started in recent years. Design of rockfall protection measures requires data for two basic parameters of rockfall impact energy and trajectory. Basically, information is required on the mass and velocity of falls to determine the required energy capacity, and on impact locations and trajectory paths to determine the optimum location and dimensions of the rockfall protection barrier or fence. Development of these design parameters requires the collection of relevant site data, followed by the analysis of energies and trajectories and then selection and design of the appropriate protection system. This paper describes and discusses new technologies for rockfall mitigation in the Nepalese slopes. It highlights the importance of impact energy and trajectories to find best suitable rockfall barrier system and describe how impact energy and trajectories are fixed for particular project. Some case studies will be highlighted in the presentation.