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Environmental Earth Sciences

Erschienen in:

01.02.2012 | Special Issue

Evolution of shear zones using numerical analysis at the May 12th Wenchuan Earthquake Site, China

verfasst von: X. B. Lu, P. Cui, X. Q. Chen, K. H. Hu, Y. Y. Zhu

Erschienen in: Environmental Earth Sciences | Ausgabe 4/2012

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Abstract

Landslides and collapses occurred during the May 12th earthquake in Wenchuan County. Most of these landslides and collapses were caused by shear bands. Shear band triggers instability on mountain slopes, resulting in debris flow, landslides, or collapse. According to experimental results, there was only one shear band forming in the soil layer prior to the initiation of debris flow under shear load, although several fine shear bands appeared. The development of shear bands in saturated soils is numerically investigated in this paper using the in situ soil from the Weijia Gully, Beichuan County. The evolution of shear banding from several finite amplitude disturbances (FADs) in pore pressure has been studied. The numerical analysis revealed that the FADs evolved into a fully developed shear band. It is shown that the shear banding process consists of two stages: inhomogeneous shearing and true shear banding.

Vorheriger Artikel Analysis of activity intensity for landslides triggered by the Wenchuan earthquake, Sichuan Province, China

Nächster Artikel Susceptibility and risk assessment of earthquake-induced landslides based on Landslide Response Units in the Subao River basin, China

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Titel: Evolution of shear zones using numerical analysis at the May 12th Wenchuan Earthquake Site, China
verfasst von: X. B. Lu
P. Cui
X. Q. Chen
K. H. Hu
Y. Y. Zhu
Publikationsdatum: 01.02.2012
Verlag: Springer-Verlag
Erschienen in: Environmental Earth Sciences / Ausgabe 4/2012
Print ISSN: 1866-6280
Elektronische ISSN: 1866-6299
DOI: https://doi.org/10.1007/s12665-011-1358-4

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