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 …

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 …

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 …

A new insight into the dynamic impact between geophysical flow and rigid barrier

J Fang, Y Cui, X Li, J Nie - Computers and Geotechnics, 2022 - Elsevier
Understanding the interaction between complicated geophysical flows and barriers remains
a critical challenge for hazards countermeasures in engineering design. In this study, the …

Influence of the impact angle on the motion and deposition of granular flows

Y Ge, T Zhou, H Tang, Z Lin - Engineering Geology, 2020 - Elsevier
The impact angle is an important but understudied factor that exerts a significant control on
the propagation of granular flows. To investigate the influence of the impact angle on the …

Geophysical flows impacting a flexible barrier: effects of solid-fluid interaction

D Song, CE Choi, CWW Ng, GGD Zhou - Landslides, 2018 - Springer
Flexible barriers undergo large deformation to extend the impact duration, and thereby
reduce the impact load of geophysical flows. The performance of flexible barriers remains a …

Impact mechanisms of granular flow against curved barriers

CE Choi, Y Cui, LHD Liu, CWW Ng… - Géotechnique …, 2017 - icevirtuallibrary.com
Curved seawalls remain one of the most widely adopted coastal-protection measure. A
curved face redirects flow momentum and prevents waves from overtopping. Likewise, the …

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 …

Impact mechanisms of granular and viscous flows on rigid and flexible barriers

CWW Ng, D Song, CE Choi, LHD Liu… - Canadian …, 2017 - cdnsciencepub.com
Structural countermeasures such as rigid and flexible barriers are commonly installed in
mountainous regions to intercept mass-wasting processes. Without sufficient and reliable …

Impact force of granular flows on walls normal to the bottom: slow versus fast impact dynamics

T Faug - Canadian Geotechnical Journal, 2021 - cdnsciencepub.com
The devastating effects of natural hazards due to the propagation of mass flows, such as
landslides, debris flows, and avalanches, can be avoided, or at least reduced, by placing …