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| Titel |
Model testing on rainfall-induced landslide of loose soil in Wenchuan earthquake region |
| VerfasserIn |
H. Fang, P. Cui, L. Z. Pei, X. J. Zhou |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 3 ; Nr. 12, no. 3 (2012-03-01), S.527-533 |
| Datensatznummer |
250010598
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| Publikation (Nr.) |
 copernicus.org/nhess-12-527-2012.pdf |
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| Zusammenfassung |
| This study investigates the formation process of
rainfall-induced landslide for slopes composed of loose soil in the Wenchuan
earthquake region. Experimental investigations have been performed on the
landslide's formation and the variation of the controlling soil parameters
under various artificial rainfall conditions. The landslide triggering
mechanisms can be described in the following way. Firstly, the large
porosity of the loose soil facilitated the infiltration of water, which
increased the pore water pressure and reduced the shear
strength of the soil significantly. In addition, the rainfalls probably caused the
concentration of finer particles at a certain depth of the valley slopes.
This concentration within the soil increased the pore water
pressure significantly, and consequently reduced both the porosity ratio and permeability.
Therefore, when the pore water pressure reached a critical state, the
effective shear strength of the soil diminished, inducing the landslide's
formation. |
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