Searched for: landslide rainfall
(1 - 13 of 13)
document
Askarinejad, A. (author), Akca, Devrim (author), Springman, Sarah M. (author)
of soil mass. Novel slope deformation sensors (SDSs) were applied to monitor the subsurface pre-failure movements and the precursors of the artificially triggered...
journal article 2018
document
Martinović, Karlo (author), Gavin, K. (author), Reale, C. (author), Mangan, Cathal (author)
Rainfall thresholds express the minimum levels of rainfall that need to be reached or exceeded in order for landslides to occur in a particular area. They are a common tool in expressing the temporal portion of landslide hazard analysis. Numerous rainfall thresholds have been developed for different areas worldwide, however none of these are...
journal article 2018
document
Shao, W. (author)
The topic of this thesis is the quantification of the influence of preferential flow on landslide-triggering in potentially unstable slopes. Preferential flow paths (e.g., cracks, macropores, fissures, pipes, etc.) commonly exists in slopes. Flow velocities in preferential flow paths can be significantly larger than in the matrix. Under large...
doctoral thesis 2017
document
Shao, W. (author), Bogaard, T.A. (author), Su, Y. (author), Bakker, M. (author)
In this study, a 1D hydro-mechanical model was developed by coupling a dual-permeability model with an infinite slope stability approach to investigate the influence of preferential flow on pressure propagation and slope stability. The dual-permeability model used two modified Darcy-Richards equations to simultaneously simulate the matrix flow...
journal article 2016
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Yuan, J (author), Papaioannou, I (author), Straub, D. (author)
Landslide events often occur after rainfall events during which the pore water pressure builds up within surficial soil layers, leading to shallow slope failure. The spatial variability of the permeability parameters of the soil causes high gradients in pore water pressure when the rainwater infiltrates into the slope. In this paper, we compute...
conference paper 2015
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Chen, H.X. (author), Zhang, L.M. (author)
Shallow slope failures are one of the most frequent geological hazards in mountainous areas, which pose great danger to people and properties in affected areas. This paper presents a cell-based platform for quantitative risk assessment for shallow slope failures at a regional scale. There are five components in this platform; namely, a digital...
conference paper 2015
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Ko, F.W.Y. (author)
Hong Kong faces a unique long-term slope safety problem due to its dense urban development in a hilly terrain combined with high seasonal rainfall. Its slope engineering practice and landslide risk management have evolved in response to experience and through continuous improvement initiatives and technology advances. The application of state-of...
conference paper 2015
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Salciarini, D. (author), Castorino, G.C. (author), Cuomo, S. (author), Tamagnini, C. (author)
In this paper we present a modified version of an existing, physically-based model for shallow landslide susceptibility analysis over large area. In general, the potentially unstable soil cover is considered uniform and homogeneous, over impervious underlying bedrock. In several case studies, this was proven to be unrealistic. The possibility of...
conference paper 2015
document
Askarinejad, A. (author)
Landslides triggered by hydraulic perturbations are initiated by a decrease in the effective stress, and hence the shear strength of the soil, as a result of the increase in pore water pressure which might occur due to either rain infiltration or exfiltration of water from the bedrock. However, several factors including the shape and hydraulic...
abstract 2015
document
Bogaard, T.A. (author), Greco, R. (author), Olivares, L. (author), Picarelli, L. (author)
During the Third Italian Workshop on Landslide, a special session was dedicated to a landslide hydrological modeling competition. The modeling exercise dealt with slopes covered with loose granular pyroclastic deposits typical of Campania (southern Italy). The data provided to the participants for the calibration of their models are described,...
journal article 2014
document
Cervi, F. (author), Ronchetti, F. (author), Martinelli, G. (author), Bogaard, T.A. (author), Corsini, A. (author)
Changes in soil water content, groundwater flow and a rise in pore water pressure are well-known causal or triggering factors for hillslope instability. Rainfall and snowmelt are generally assumed as the main sources of groundwater recharge. This assumption neglects the role of deep water inflow in highly tectonized areas, a factor that can...
journal article 2012
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Askarinejad, A. (author), Laue, J. (author), Iten, M. (author), Zweidler, A. (author), Bleiker, E. (author), Buschor, H. (author), Springman, S.M. (author)
A series of small scale physical modelling tests are performed in a geotechnical drum centrifuge in order to investigate the triggering mechanisms of landslides due to rainfall. They are conducted under controlled conditions of rainfall intensity and duration, ambient relative humidity, wind, and temperature. These tests have been designed to...
conference paper 2012
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Krzeminska, D.M. (author), Bogaard, T.A. (author), Van Asch, T.W.J. (author), Van Beek, L.P.H. (author)
Hydrological processes control the behaviour of many unstable slopes, and their importance for landslide activity is generally accepted. The presence of fissures influences the storage capacity of a soil and affects the infiltration processes of rainfall. The effectiveness of the fissure network depends upon fissure size, their spatial...
journal article 2012
Searched for: landslide rainfall
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