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 …

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 …

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 …

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 …

Effects of basal clearance on the impact dynamics of dry granular flow against dual rigid barriers

CWW Ng, H Liu, CE Choi, A Bhatta… - Canadian Geotechnical …, 2022 - cdnsciencepub.com
A basal clearance is usually designed beneath barriers to enable sufficient discharge to
minimise the maintenance work over service life. Current design guidelines for multiple …

Flume investigation of the influence of rigid barrier deflector angle on dry granular overflow mechanisms

CE Choi, CWW Ng, SR Goodwin… - Canadian …, 2016 - cdnsciencepub.com
Mass-wasting processes are often intercepted using rigid barriers, which are sometimes
equipped with deflectors to prevent overspilling. Despite the engineering value of deflectors …

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 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 …

Mechanisms of interaction between dry sand flow and multiple rigid barries: flume and finite-element modelling

CH Koo - 2017 - repository.ust.hk
Multiple barriers are commonly installed along predicted flow paths to intercept large
volumes of geophysical flows. Current practice ignores the impact and overflow dynamics …

Discrete-element investigation of influence of granular debris flow baffles on rigid barrier impact

RPH Law, CE Choi, CWW Ng - Canadian Geotechnical Journal, 2015 - cdnsciencepub.com
Granular debris flow baffles are commonly installed in front of rigid barriers to dissipate flow
energy and reduce the required barrier impact capacity. Despite the engineering value of …