Modelling of short runout propagation landslides and debris flows
نویسندگان
چکیده
منابع مشابه
Combining Spatial Models for Shallow Landslides and Debris-Flows Prediction
Mass movements in Brazil are common phenomena, especially during strong rainfall events that occur frequently in the summer season. These phenomena cause losses of lives and serious damage to roads, bridges, and properties. Moreover, the illegal occupation by slums on the slopes around the cities intensifies the effect of the mass movement. This study aimed to develop a methodology that combine...
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This paper is an extension of the single-phase cohesionless dry granular avalanche model over curved and twisted channels proposed by Pudasaini and Hutter (2003). It is a generalisation of the Savage and Hutter (1989, 1991) equations based on simple channel topography to a twophase fluid-solid mixture of debris material. Important terms emerging from the correct treatment of the kinematic and d...
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Large landslides exhibit surprisingly long runout distances compared to a rigid body sliding from the same slope, and the mechanism of this phenomena has been studied for decades. This paper shows that the observed long runouts can be explained quite simply via a granular pile flowing downhill, while collapsing and spreading, without the need for frictional weakening that has traditionally been...
متن کاملDrop Height and Volume Control the Mobility of Long-Runout Landslides on the Earth and Mars
Long-runout landslides are landslides with volumes of 10 m or more, which move much farther from their source than expected. The observation that Martian landslides are generally less mobile than terrestrial landslides offers important evidence regarding the mechanism responsible for the high mobility of long-runout landslides. Here we simulate landslides as granular flow using a soft-particle ...
متن کاملModelling Surface Flows for Macroscopic Phenomena by Cellular Automata: An Application to Debris Flows
Cellular automata are good candidates for modelling and simulating complex dynamical systems, whose evolution depends on the local interactions of their constituent parts. Many macroscopic phenomena have such features, but their complexity involves sometime the interaction of heterogeneous processes, whose composition is not immediate in a cellular automaton frame. Furthermore the managing of f...
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ژورنال
عنوان ژورنال: Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards
سال: 2013
ISSN: 1749-9518,1749-9526
DOI: 10.1080/17499518.2013.797824