Influence of Rainfall Patterns on the Instability of Slopes

The assessment of rainstorm-induced shallow landslides is still a research topic of wide concern for scientists and engineers. This paper examined the effect of rainfall intensity distribution on shallow landslides. Four synthetic rainfall distributions comprising uniformed, delayed, centralized, an...

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Main Authors: Muntohar A.S., Ikhsan J., Liao H.J.
Format: Article
Language:English
Published: Petra Christian University 2013-01-01
Series:Civil Engineering Dimension
Subjects:
Online Access:http://puslit2.petra.ac.id/ejournal/index.php/civ/article/view/18763
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author Muntohar A.S.
Ikhsan J.
Liao H.J.
author_facet Muntohar A.S.
Ikhsan J.
Liao H.J.
author_sort Muntohar A.S.
collection DOAJ
description The assessment of rainstorm-induced shallow landslides is still a research topic of wide concern for scientists and engineers. This paper examined the effect of rainfall intensity distribution on shallow landslides. Four synthetic rainfall distributions comprising uniformed, delayed, centralized, and advanced, were selected to examine the effect of rainstorm patterns on slope failure. The infiltration was modeled using Green-Ampt equation, while an infinite slope was selected to model the shallow landslide. Monte Carlo Simulation was applied to analyze the failure probability of the slopes. Two landslide cases were selected to examine the proposed model. The results indicated that among the four representative rainstorm patterns, the advanced rainfall pattern caused worst slope stability. The advanced rainfall pattern resulted in the shortest rainfall duration threshold for landslide occurrence, followed by the central, uniform, and then delayed rainfall pattern. The probabilistic analysis method was suitable to estimate the time of failure for the evaluated landslide cases.
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spelling doaj.art-abacad5216f34b19b23f38671ec878682022-12-21T18:07:39ZengPetra Christian UniversityCivil Engineering Dimension1410-95301979-570X2013-01-01152120128Influence of Rainfall Patterns on the Instability of SlopesMuntohar A.S.0Ikhsan J.1Liao H.J.2 Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta Department of Construction Engineering, National Taiwan University of Science and Technology, Taipei The assessment of rainstorm-induced shallow landslides is still a research topic of wide concern for scientists and engineers. This paper examined the effect of rainfall intensity distribution on shallow landslides. Four synthetic rainfall distributions comprising uniformed, delayed, centralized, and advanced, were selected to examine the effect of rainstorm patterns on slope failure. The infiltration was modeled using Green-Ampt equation, while an infinite slope was selected to model the shallow landslide. Monte Carlo Simulation was applied to analyze the failure probability of the slopes. Two landslide cases were selected to examine the proposed model. The results indicated that among the four representative rainstorm patterns, the advanced rainfall pattern caused worst slope stability. The advanced rainfall pattern resulted in the shortest rainfall duration threshold for landslide occurrence, followed by the central, uniform, and then delayed rainfall pattern. The probabilistic analysis method was suitable to estimate the time of failure for the evaluated landslide cases.http://puslit2.petra.ac.id/ejournal/index.php/civ/article/view/18763Probabilityrainfall patternrainstormshallow landslideslope.
spellingShingle Muntohar A.S.
Ikhsan J.
Liao H.J.
Influence of Rainfall Patterns on the Instability of Slopes
Civil Engineering Dimension
Probability
rainfall pattern
rainstorm
shallow landslide
slope.
title Influence of Rainfall Patterns on the Instability of Slopes
title_full Influence of Rainfall Patterns on the Instability of Slopes
title_fullStr Influence of Rainfall Patterns on the Instability of Slopes
title_full_unstemmed Influence of Rainfall Patterns on the Instability of Slopes
title_short Influence of Rainfall Patterns on the Instability of Slopes
title_sort influence of rainfall patterns on the instability of slopes
topic Probability
rainfall pattern
rainstorm
shallow landslide
slope.
url http://puslit2.petra.ac.id/ejournal/index.php/civ/article/view/18763
work_keys_str_mv AT muntoharas influenceofrainfallpatternsontheinstabilityofslopes
AT ikhsanj influenceofrainfallpatternsontheinstabilityofslopes
AT liaohj influenceofrainfallpatternsontheinstabilityofslopes