A multi-method approach to study the stability of natural slopes and landslide susceptibility mapping

被引:102
|
作者
Fall, M
Azzam, R
Noubactep, C
机构
[1] Univ Quebec, Rouyn Noranda, PQ J9X 5E4, Canada
[2] Rhein Westfal TH Aachen, Aachen, Germany
[3] Univ Gottingen, D-3400 Gottingen, Germany
关键词
landslide; GIS; hazard assessment; numerical modeling; Dakar; stability; multi-method approach;
D O I
10.1016/j.enggeo.2005.11.007
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
In this paper, a multi-method approach for the assessment of the stability of natural slopes and landslide hazard mapping applied to the Dakar coastal region is presented. This approach is based oil the effective combination of geotechnical field and laboratory works, of GIS, and of mechanical (deterministic and numerical) stability analysis. By using this approach, valuable results were gained regarding instability factors, landslide kinematics, simulation of slope failure and coastal erosion. This led to a thorough assessment and strong reduction in the subjectivity of the slope stability and hazard assessment and to the development of an objective landslide danger map of the SW coast of Dakar. Analysis of the results shows that the slides were influenced by the geotechnical properties of the soil, the weathering, the hydrogeological situation, and the erosion by waves. The landslide susceptibility assessment based on this methodological approach has allowed for an appropriate and adequate consideration of the multiple factors affecting the stability and the optimization of planning and investment for land development in the city. (C) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:241 / 263
页数:23
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