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(Article of periodic en Anglais - 2010)

Document title

Rock slope instability assessment using spatially distributed structural orientation data in Darjeeling Himalaya (India)

Authors(s) and Affiliation(s)

GHOSH S. (1 3) ; GÜNTHER A. (2) ; CARRANZA E.J.M. (1) ; VAN WESTEN C.J. (1) ; JETTEN V.G. (1) ;
(1) Dep. of Earth System Analysis, Fac. of Geo-Information Science and Earth Observation (ITC), Univ. of Twente, Enschede, PAYS-BAS
(2) Federal Inst. for Geosciences and Natural Resources (BGR), Hanover, ALLEMAGNE
(3) Engineering Geology Division, Geological Survey of India, Eastern Region, Kolkata, INDE

Abstract

The AA. discuss a geographic information system (GIS)-based methodology for rock slope instability assessment based on geometrical relationships between topographic slopes and structural discontinuities in rocks. The methodology involves (a) regionalization of point observations of orientations (azimuth and dip) of structural discontinuities in rocks in order to generate a digital structural model (DStM), (b) testing the kinematical possibility of specific modes of rock slope failures by integrating DStMs and digital elevation model (DEM)-derived slope and aspect data and (c) computation of stability scenarios with respect to identified rock slope failure modes. The methodology is tested in Darjeeling Himalaya. Results of scenario-based analysis show that, in rock slopes classified to be unstable, stress-induced rock slope instability tends to increase with increasing level of water saturation

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2010, vol. 35, no15 [pp. 1773-1792]

Bibliographic references : 50 ref.

Collation : 13 fig., 8 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2017

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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