Uncertainty analysis of slope stability considering geological heterogeneity

Xiaohui Qi, W. H. Zhou, D. Q. Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

Geological heterogeneity appears in the form of one soil layer embedded in another or the inclusion of pockets of different soil type within a more uniform soil mass. Uncertainty in the Factor of Safety (FS) for a slope induced by the geological heterogeneity is not well studied in the past. This paper presents a way to evaluate the uncertainty in the FS for a slope in the presence of geological heterogeneity using borehole data. The geological heterogeneity is simulated by an efficient Coupled Markov Chain (CMC) model. Monte Carlo simulation of slope stability is conducted based on the simulated heterogeneous soils. Effect of borehole layout schemes on uncertainty evaluation of FS is investigated. The results show that borehole beyond the influence zone of the slope is not very useful for the evaluation of slope stability. Borehole at the middle part of the slope is essential for a precise evaluation of FS statistics.

Original languageEnglish
Title of host publicationLandslides and Engineered Slopes. Experience, Theory and Practice
EditorsStefano Aversa, Leonardo Cascini, Luciano Picarelli, Claudio Scavia
Place of PublicationLondon
PublisherTaylor & Francis
Chapter198
Pages1685-1693
Number of pages9
Edition1st
ISBN (Electronic)781315375007
ISBN (Print)9781138029880
DOIs
Publication statusPublished - 6 Jun 2016
Externally publishedYes
Event12th International Symposium on Landslides, 2016 - Napoli, Italy
Duration: 12 Jun 201619 Jun 2016

Publication series

NameLandslides and Engineered Slopes. Experience, Theory and Practice
Volume3

Conference

Conference12th International Symposium on Landslides, 2016
Country/TerritoryItaly
CityNapoli
Period12/06/1619/06/16

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