NDLI: The mechanism of a railway landslide caused by rainfall

Content Provider	Springer Nature Link
Author	Xu, Qianjun Zhang, Limin
Copyright Year	2010
Abstract	This paper presents the study of a landslide induced by rainfall above a railway line in terms of site investigations, laboratory tests, finite element, and limit equilibrium analyses. The purpose of the study is to identify the cause and failure mechanism so as to prevent the recurrence of such failure. The slope concerned was composed of 3∼4 m thick fissured clay overlying highly weathered mica marble interbedded with quartz schist. The slope was cut into two steps and was protected by a masonry revetment and a thin masonry retaining wall at the toe. The region concerned suffered a whole month’s light drizzle in September, after which a rainfall of an intensity of 80 mm (in 48 h) occurred 5 days prior to the failure that happened on October 5, 2004. The rainfall infiltration and a failed drainage system behind the retaining wall resulted in high saturation of the clay and finally led to an undrained failure. The short-term slope stability using total stress parameters was examined by the finite element and limit equilibrium analyses. The factors of safety of the slope obtained by the finite element and limit equilibrium analysis were 0.935 and 0.854, which are in agreement with the occurrence of failure. Since the slide took place through the interface of the soil and rock, the exposure of rock has significant effect on the stability.
Starting Page	149
Ending Page	156
Page Count	8
File Format	PDF
ISSN	1612510X
Journal	Landslides
Volume Number	7
Issue Number	2
e-ISSN	16125118
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-02-17
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Retaining wall Landslide Rainfall Finite element analysis Limit equilibrium analysis Geography (general) Civil Engineering Agriculture Natural Hazards
Content Type	Text
Resource Type	Article
Subject	Geotechnical Engineering and Engineering Geology

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