A Case Study on the Energy Capacity of a Flexible Rockfall Barrier in Resisting Landslide Debris

Landslides frequently occur in forest areas with a steep hillside, especially when severely disturbed by human activities. After sustained heavy rainfall, landslide occurred near the Tianwan tunnel entrance of Chongqing-Huaihua railway China. Fortunately, debris was successfully intercepted flexible barrier originally installed to stop rockfalls, which is, date, first publicly reported case having been without any damage, mainland A field investigation conducted, and then back analysis mobility interaction between carried out. The showed that impact energy three-times larger than rated capacity barrier. It also elongation brake rings deflection from numerical simulation comparable measurements. fact these were not elongated their limit indicated still had surplus. Finally, investigate maximum rockfall resisting debris, parametric analyses impacted different energies velocities out using coupled ALE-FEM modeling technique. results dissipated less 40% total debris. With an increase energy, dissipation ratio decreased linearly. is four-times rockfall.