Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Modelling the space–time evolution of bed entrainment for flow-like landslides
https://orcid.org/0000-0001-8024-0319
https://orcid.org/0000-0003-2807-6990
Abstract The paper discusses the space–time evolution of bed entrainment for some typical flow-like landslides in three different test areas. First, the attention is focused on debris avalanches (DA), whose lateral spreading is highly affected by bed entrainment. Two cases of debris avalanches turning into debris flows (DF)—i.e., channelized flows—are then investigated to discuss the potential occurrence of complex bed entrainment scenarios. A quasi-3D (depth-integrated) coupled SPH (Smooth Particle Hydrodynamic) model is used. The numerical results show that i) the eroded thicknesses have maximum values in the intermediate portion of the debris avalanche path and ii) the computed time variations of eroded thicknesses and the entrainment rates are consistent with those indicated in recent literature for DAs at the studied areas. In addition, the computed scenarios are differentiated in terms of unitary flow discharge, identifying the typical behaviour of small volume DA, landslides propagating inside gullies as DFs, and combined DFs and DAs.
Highlights Space-time evolution of bed entrainment analysed for different flow-like landslides Eroded thicknesses maximum at the intermediate portion of debris avalanches path Computed entrainment rates consistent with the recent literature Different scenarios can occur as far as propagation dynamics and bed entrainment.
Modelling the space–time evolution of bed entrainment for flow-like landslides
https://orcid.org/0000-0001-8024-0319
https://orcid.org/0000-0003-2807-6990
Abstract The paper discusses the space–time evolution of bed entrainment for some typical flow-like landslides in three different test areas. First, the attention is focused on debris avalanches (DA), whose lateral spreading is highly affected by bed entrainment. Two cases of debris avalanches turning into debris flows (DF)—i.e., channelized flows—are then investigated to discuss the potential occurrence of complex bed entrainment scenarios. A quasi-3D (depth-integrated) coupled SPH (Smooth Particle Hydrodynamic) model is used. The numerical results show that i) the eroded thicknesses have maximum values in the intermediate portion of the debris avalanche path and ii) the computed time variations of eroded thicknesses and the entrainment rates are consistent with those indicated in recent literature for DAs at the studied areas. In addition, the computed scenarios are differentiated in terms of unitary flow discharge, identifying the typical behaviour of small volume DA, landslides propagating inside gullies as DFs, and combined DFs and DAs.
Highlights Space-time evolution of bed entrainment analysed for different flow-like landslides Eroded thicknesses maximum at the intermediate portion of debris avalanches path Computed entrainment rates consistent with the recent literature Different scenarios can occur as far as propagation dynamics and bed entrainment.
Modelling the space–time evolution of bed entrainment for flow-like landslides
https://orcid.org/0000-0001-8024-0319
https://orcid.org/0000-0003-2807-6990
Abstract The paper discusses the space–time evolution of bed entrainment for some typical flow-like landslides in three different test areas. First, the attention is focused on debris avalanches (DA), whose lateral spreading is highly affected by bed entrainment. Two cases of debris avalanches turning into debris flows (DF)—i.e., channelized flows—are then investigated to discuss the potential occurrence of complex bed entrainment scenarios. A quasi-3D (depth-integrated) coupled SPH (Smooth Particle Hydrodynamic) model is used. The numerical results show that i) the eroded thicknesses have maximum values in the intermediate portion of the debris avalanche path and ii) the computed time variations of eroded thicknesses and the entrainment rates are consistent with those indicated in recent literature for DAs at the studied areas. In addition, the computed scenarios are differentiated in terms of unitary flow discharge, identifying the typical behaviour of small volume DA, landslides propagating inside gullies as DFs, and combined DFs and DAs.
Highlights Space-time evolution of bed entrainment analysed for different flow-like landslides Eroded thicknesses maximum at the intermediate portion of debris avalanches path Computed entrainment rates consistent with the recent literature Different scenarios can occur as far as propagation dynamics and bed entrainment.
Modelling the space–time evolution of bed entrainment for flow-like landslides
Cuomo, Sabatino (Autor:in) / Pastor, Manuel (Autor:in) / Capobianco, Vittoria (Autor:in) / Cascini, Leonardo (Autor:in)
Engineering Geology ; 212 ; 10-20
27.07.2016
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Modelling the space–time evolution of bed entrainment for flow-like landslides
| British Library Online Contents | 2016
Modelling the space–time evolution of bed entrainment for flow-like landslides
| Online Contents | 2016
Modelling the space–time evolution of bed entrainment for flow-like landslides
| British Library Online Contents | 2016
Modelling the space–time evolution of bed entrainment for flow-like landslides
| BASE | 2016
Modelling the space–time evolution of bed entrainment for flow-like landslides
| British Library Online Contents | 2016