The Class A Prediction Symposium on “Debris flow impact forces on single and dual barriers” was held at The Hong Kong University of Science and Technology on 8 and 9 May 2022. The aim of this symposium is to advance scientific knowledge and engineering practice in debris flow hazards mitigation.
MSc. Yadong Wang, PhD-student and the team from the Institute of Geotechnical Engineering, Department of Civil Engineering and Natural Hazards, won the Ringo Yu award for the 2nd Runner up in this Class A Prediction Symposium. The prediction contained the following process: first, based on their own SPH codes, the participants focused on the SPH modelling of debris flow impact forces on dual rigid barriers; then the soil-water mixture was regarded as a single-phase material with apparent-viscosity; for the unknown material viscosity, the Mohr-Coulomb rheology model and Bingham model were adopted to capture the fluid-like behaviour, respectively; finally, output the prediction results of front velocity, pressure and impact force on the specific locations of several cells and barriers.
You may have a look at the presentation of MSc. Wang. Please note that two videos (The Evolution of Pressure and The Evolution of Velocity) can be found on the slides.