Modelling Precursor Activity in Rain-induced Landslides by Means of Spring-Block Models
Spring-block models were introduced several years ago to model avalanche-like dynamics for catastrophic landslides.This article aims to address precursor phenomena in rain-induced landslides through the enrichment of a 2D spring block model with strain gradients.To this end, an appropriate stochastic constitutive relation, introducing an effective dissipation parameter (which is related to structural heterogeneity and deformation processes at the failure plane) is used.It is shown that there is definite precursor activity before rain-induced landslides that can be modelled by a process of material yielding at the failure plane (a weak plane at a certain depth, parallel to the surface of the soil or rock mass, over which landslide takes place).This activity is related to the exponent b of the power law distribution of the slip events within the failure plane.Cellular automata simulations were used to verify the analytical predictions, which can be useful to geoscientists and engineers, since an early prediction of the initiation of a landslide can minimize its catastrophic results through proper safety and precaution measures.
rain-induced landslides precursor phenomena effective dissipation parameter structural heterogeneity material softening cellular automata
Markos Avlonitis Avraam Konstantinidis George Efremidis
Department of Informatics, Ionian University, 7 Tsirigoti Square, GR-Corfu, Greece
国际会议
World Landslide Forum 3(第三届世界滑坡论坛)
北京
英文
602-605
2014-06-02（万方平台首次上网日期，不代表论文的发表时间）