Debris flows, boulders and constrictions: a simple framework for modeling jamming, and its consequences on outflow

G Piton, SR Goodwin, E Mark… - Journal of Geophysical …, 2022 - Wiley Online Library
Large boulders can jam in constrictions, both in canyons and man‐made structures (eg, slit‐
dams). Boulder jamming occurs stochastically, and partially governs the outflow rate of …

Numerical and analytical analyses of the impact of monodisperse and bidisperse granular flows on a baffle structure

B Zhang, Y Huang - Landslides, 2022 - Springer
Baffle structure, a promising countermeasure in reducing the destruction power of rapid
granular flows, needs more investigation especially with focus on the physically based …

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 …

Revealing the role of forests in the mobility of geophysical flows

Z Liang, CE Choi, Y Zhao, Y Jiang, J Choo - Computers and Geotechnics, 2023 - Elsevier
Forests cover 39% of low-altitude mountainous areas globally, and they are considered
natural barriers against geophysical flows. Owing to the complexity of flows, the protective …

Influences of deposition upslope the barrier on the dynamic impact of dry granular flow

J Fang, Y Cui, H Liu, L Zhang, GGD Zhou, H Fan - Engineering Geology, 2023 - Elsevier
The destructive granular flow hazards can be mitigated by intercepting the solid particles
using protective barrier in the flow paths. Changes in the performance of barrier are usually …

A depth-averaged SPH study on spreading mechanisms of geophysical flows in debris basins: Implications for terminal barrier design requirements

SR Goodwin, CE Choi - Computers and Geotechnics, 2022 - Elsevier
Conservative estimates of forces from debris flows on barriers are computable using the 'free
field approach', assuming that flows are channelised until impact. However, this approach …

Numerical assessments of the influences of soil–boulder mixed flow impact on downstream facilities

S Ren, P Zhang, T Man, SA Galindo-Torres - Computers and Geotechnics, 2023 - Elsevier
Rapid soil–boulder mixed flow commonly occurs in steep mountainous regions and has the
potential to damage critical infrastructures. Baffles are typically used as flow-impeding …

SPH-based numerical study on the influence of baffle height and inclination on the interaction between granular flows and baffles

H Cheng, B Zhang, Y Huang - Water, 2022 - mdpi.com
Arrays of baffles are widely used to prevent and mitigate granular flows (eg, debris flows and
landslides) in mountainous areas. A thorough understanding of the decelerating effect and …

Flume investigation of cylindrical baffles on landslide debris energy dissipation

BJ Kim, CY Yune - Landslides, 2022 - Springer
Debris flows moving at high speed along valleys can bring disastrous consequences to
downstream regions. Structural countermeasures are commonly installed along anticipated …

Impact behaviour of dry granular flow against baffle structure: Coupled effect of Froude and particle characteristics

B Zhang, Y Huang - Géotechnique, 2022 - icevirtuallibrary.com
The baffle design resisting dry granular flow is still impeded by the effect of the particle size
distribution coupled with the influence of Froude characteristics on baffle performance–for …