NDLI: Mechanisms of rainfall-induced landslides in gently inclined red beds in the eastern Sichuan Basin, SW China

Content Provider	Springer Nature Link
Author	Zhang, Ming Yin, Yueping Huang, Bolin
Copyright Year	2015
Abstract	Red beds are widespread in the eastern Sichuan Basin, SW China, and are often called “landslide prone strata”. The dip angle of these red beds is commonly less than 10°, which is much less than the angle of internal friction between the bedding planes. Thus, in theory, failure will not occur along the bedding planes in such strata. We used field methods, numerical modeling, and ring shear tests to investigate the effects of rainfall on landslides in shallow-dipping red beds, using the Qingning landslide in SW China as an example. Our results suggest that the probable mechanisms leading to failure are (1) permeation of rainfall through the cracks at the back of the landslide site that increases the hydrostatic water pressure, which adds to the sliding stress and reduces the effective stress on the failure surface, gradually destabilizing the mass. In the Qingning landslide, the maximum water pressure was as high as 21.8 m before failure. When the factor of safety decreased markedly to 1.015, the sliding mass started to slowly slide. (2) As sliding takes place, the sliding zone soil is under undrained shear and its shear strength decreases sharply to a critical value, which promotes rapid sliding. In the Qingning landslide, the shear resistance of the sliding zone soil decreased markedly to 25.9 kPa as the pore water pressure increased to 118.3 kPa. This study may provide a theoretical basis for landslide forecasting in gently inclined red beds of the eastern Sichuan Basin as well as in similar geological settings worldwide.
Starting Page	973
Ending Page	983
Page Count	11
File Format	PDF
ISSN	1612510X
Journal	Landslides
Volume Number	12
Issue Number	5
e-ISSN	16125118
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-07-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rainfall-induced landslide Gently inclined red beds Water pressure Sliding zone soil Shear resistance Natural Hazards Geography (general) Agriculture Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Geotechnical Engineering and Engineering Geology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Rainfall thresholds for rainfall-induced landslides in Slovenia

A simplified method for predicting rainfall-induced mobility of active landslides

Preliminary investigation of some large landslides triggered by the 2008 Wenchuan earthquake, Sichuan Province, China

Linking rainfall-induced landslides with predictions of debris flow runout distances

A simulation chain for early prediction of rainfall-induced landslides

Field monitoring of groundwater responses to heavy rainfalls and the early warning of the Kualiangzi landslide in Sichuan Basin, southwestern China

FLaIR and SUSHI: two mathematical models for early warning of landslides induced by rainfall

Rainfall-induced landslide event of May 2010 in the eastern part of the Czech Republic

Tumbi Landslide, Papua New Guinea: rainfall induced?

Mechanisms of rainfall-induced landslides in gently inclined red beds in the eastern Sichuan Basin, SW China

Similar Documents

Rainfall thresholds for rainfall-induced landslides in Slovenia

A simplified method for predicting rainfall-induced mobility of active landslides

Preliminary investigation of some large landslides triggered by the 2008 Wenchuan earthquake, Sichuan Province, China

Linking rainfall-induced landslides with predictions of debris flow runout distances

A simulation chain for early prediction of rainfall-induced landslides

Field monitoring of groundwater responses to heavy rainfalls and the early warning of the Kualiangzi landslide in Sichuan Basin, southwestern China

FLaIR and SUSHI: two mathematical models for early warning of landslides induced by rainfall

Rainfall-induced landslide event of May 2010 in the eastern part of the Czech Republic

Tumbi Landslide, Papua New Guinea: rainfall induced?

Mechanisms of rainfall-induced landslides in gently inclined red beds in the eastern Sichuan Basin, SW China