Translational inertial effects and scaling considerations for coarse granular flows impacting landslide-resisting barriers

SR Goodwin, CE Choi - Journal of Geotechnical and …, 2021 - ascelibrary.org
Coarse grains accumulate at granular flow fronts and must be considered when studying
granular flows impacting barriers. Experimental studies often use instrumented barriers …

Effects of barrier deformability on load reduction and energy dissipation of granular flow impact

CWW Ng, C Wang, CE Choi, W De Silva… - Computers and …, 2020 - Elsevier
Granular flows, such as debris flows, are commonly arrested by using deformable barriers,
but their designs rely heavily on empiricism. The fundamental impact mechanisms between …

Interaction between granular flows and flexible obstacles: a grain-scale investigation

CE Choi, SR Goodwin - Computers and Geotechnics, 2020 - Elsevier
Flexible obstacles are used to reduce the impact load exerted by granular flows. However,
grain-scale interactions between granular assemblies and flexible obstacles remain poorly …

Froude characterization for unsteady single-surge dry granular flows: impact pressure and runup height

CWW Ng, CE Choi, SR Goodwin - Canadian Geotechnical …, 2019 - cdnsciencepub.com
The impact and pileup mechanisms of unsteady granular flows impacting a rigid barrier are
governed by the Froude conditions (Fr). Velocity and depth vary along the length of the flow …

Influence of particle size on the mechanism of dry granular run-up on a rigid barrier

CWW Ng, CE Choi, LHD Liu, Y Wang… - Géotechnique …, 2017 - icevirtuallibrary.com
Granular flows comprise a wide range of particle sizes. The particle size governs the degree
of grain contact and inertial stresses in the flow, thus influencing the mechanism of impact …

Investigation of basal friction effects on impact force from a granular sliding mass to a rigid obstruction

A Ahmadipur, T Qiu, B Sheikh - Landslides, 2019 - Springer
Understanding the behavior of rapid granular flow and quantifying the impact force from a
granular sliding mass on a rigid obstruction provide useful information for risk assessment …

Effects of particle size of mono-disperse granular flows impacting a rigid barrier

Y Cui, CE Choi, LHD Liu, CWW Ng - Natural Hazards, 2018 - Springer
Understanding the interaction between complex geophysical flows and barriers remains a
critical challenge for protecting infrastructure in mountainous regions. The scientific …

Numerical investigation of the mechanism of granular flow impact on rigid control structures

E Yang, HH Bui, GD Nguyen, CE Choi, CWW Ng… - Acta Geotechnica, 2021 - Springer
Baffles and check-dam systems are often used as granular flow (rock avalanches, debris
flows, etc.) control structures in regions prone to dangerous geological hazards leading to …

Influence of topography on the impact mechanism of dry granular flow: a DEM study

R Zhang, D Su, YJ Jiang, H Xiong, W Han, X Chen - Powder Technology, 2023 - Elsevier
A detailed investigation on the influence of topography on the impact mechanism of dry
granular flow is still lacking. In this study, the effect of topography was examined …

[HTML][HTML] Impact dynamics of granular debris flows based on a small-scale physical model

C Scheidl, C Friedl, L Reider, S Wernhart, AL Fuchs… - Acta Geotechnica, 2024 - Springer
The peak pressure of a granular debris flow at low Froude conditions can be calculated with
knowledge of the stress anisotropy and the bulk density as well as the run-up height at …