Unsteady overflow behavior of polydisperse granular flows against closed type barrier

B Zhang, Y Huang - Engineering Geology, 2021 - Elsevier
The overflow behavior of polydisperse granular flows against closed type barrier is a crucial
yet poorly understood aspect of multiple-barrier design. We use a robust numerical model …

Runout and deflection of granular flow past an array of obstacles on a slope

X Wang, S Yang, W Yu, X Yang, Q Liu - European Journal of Mechanics-B …, 2022 - Elsevier
The interaction between granular flow and an array of obstacles is an important research
subject in geological disaster prevention. We used a numerical model for the depth …

Effect of unsteady flow dynamics on the impact of monodisperse and bidisperse granular flow

B Zhang, Y Huang - Bulletin of Engineering Geology and the Environment, 2022 - Springer
Protective barriers provide crucial resistance against the impact of granular flows. However,
the adoption of characterized flow depth and velocity values in impact force estimation …

Dry granular flow interaction with dual-barrier systems

CWW Ng, CE Choi, RCH Koo, SR Goodwin… - …, 2018 - icevirtuallibrary.com
Multiple barriers are commonly installed along predicted geophysical flow paths to intercept
large flow volumes. The main criterion for multiple-barrier design is volume retained. The …

On the impact of dry granular flow against a rigid barrier with basal clearance via discrete element method

W Shen, G Luo, X Zhao - Landslides, 2022 - Springer
Rigid barriers are prevalent structure countermeasures for mitigating granular flow hazards
in mountainous areas. To reduce maintenance for barriers, a basal clearance is commonly …

Effects of solid fraction of saturated granular flows on overflow and landing mechanisms of rigid barriers

CWW Ng, U Majeed, CE Choi - Géotechnique, 2022 - icevirtuallibrary.com
Steep creek hazards are characterised according to their solid fraction, ν s, which governs
the flow dynamics. To arrest these hazards, rigid multiple barriers are installed along a …

Numerical simulation of fast granular flow facing obstacles on steep terrains

S Yang, X Wang, Q Liu, M Pan - Journal of Fluids and Structures, 2020 - Elsevier
The interaction between fast shallow granular flow and obstacles on steep terrain is an
important aspect of granular mechanics and defending against geological hazards. In this …

Interaction between dry granular flow and rigid barrier with basal clearance: analytical and physical modelling

CE Choi, CWW Ng, H Liu… - Canadian Geotechnical …, 2020 - cdnsciencepub.com
Some types of barriers are designed with a clearance between the bottom of the barrier and
the channel bed. This feature allows small discharges to pass, thereby reducing the …

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 …

[HTML][HTML] Effects of retained dry material on the impact, overflow and landing dynamics

J Fang, Y Cui, H Liu - Journal of Rock Mechanics and Geotechnical …, 2024 - Elsevier
During long-term operation, the performance of obstacles would be changed due to the
material accumulating upslope the obstacle. However, the effects of retained material on …