山崩
地质学
危害
比例(比率)
水文学(农业)
地貌学
岩土工程
地图学
地理
有机化学
化学
作者
Alfonso Gutiérrez-Martín
出处
期刊:Geomorphology
[Elsevier]
日期:2020-06-01
卷期号:359: 107121-107121
被引量:19
标识
DOI:10.1016/j.geomorph.2020.107121
摘要
This study proposes an original approach for predicting shallow translational slide hazards, which are triggered by irregular rainfall events, via the method of zonation at a regional scale in emergency situations. The proposed model incorporates the infinite slope method in a GIS platform to assess hazard and risk associated with slope instability. This application can be integrated into the emergency management software SIMGE 1.0., SGE 2.0. The objective of the work is to provide a quick tool for managing emergencies and predicting shallow rainfall-induced landslides (RILs). The originality of this approach includes the relationship between two variables (m, Z)—with m being a hydrological pattern of steady state simulating the effects of rain that cause translational slides and Z being the characteristic sliding depth based on the bounded lithological unit. This method provides hazard maps, including zonation based on a factor of safety towards shallow landslides, where stable and unstable conditions (depending on precipitation) are determined for managing emergencies. This approach was applied in the Guadalmansa River basin, in Benahavis, Málaga (Andalusia), where numerous shallow landslides occurred in 2010, caused by extreme rainfall events, and a lithological unit has been isolated for this research (Alpujarride schist). The results obtained through this method have been verified after analysing the studied area's landslide inventory.
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