Interaction mechanisms between debris flow and multiple barrier systems
Grant Data
Project Title
Interaction mechanisms between debris flow and multiple barrier systems
Principal Investigator
Dr Choi, Clarence Edward
(Principal Investigator (PI))
Duration
36
Start Date
2018-01-01
Amount
251000
Conference Title
Interaction mechanisms between debris flow and multiple barrier systems
Presentation Title
Keywords
Barrier configuraiton, Debris flow, Flow regime, Impact study, Multiple barrier system
Discipline
Geotechnical
Panel
Engineering (E)
HKU Project Code
51709052
Grant Type
National Natural Science Foundation of China (NSFC) - Science Fund for Young Scholars
Funding Year
2018
Status
Completed
Objectives
In this study small-scale physical tests using a 5-m long channel will be carried out to study the interaction between debris flow and multiple barriers. The channel inclination and particle diameter will be varied to study a wide range of flow types characterised by different pertinent dimensionless groups. Results from the physical model tests will then be adopted to calibrate a coupled Discrete Element Method with Computational Fluid Dynamics (DEM-CFD) model with a new pore pressure formulation. The calibrated numerical model will be used to carry out back-analyses to bear further insight by quantifying the energy dissipation, and mesoscopic flow characteristics such as stress, strain, and pore pressure. Finally, a field investigation will be carried out in Dongchuan, China to help verify scaled physical tests and numerical simulations.