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Influence of initial conditions on unsaturated groundwater flow models

Slope failure in unsaturated soils is common in tropical countries due to the seasonal pattern of abundant rainfall preceding a period of prolonged drying. Much research has been undertaken to understand the behaviour of unsaturated slopes and reduce the number of catastrophic failures. The initial...

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Main Authors: Mohd. Taib, Aizat, Taha, Mohd. Raihan, Abang Hasbollah, Dayang Zulaika
格式: Article
语言:English
出版: Science Publishing Corporation 2019
主题:
TA Engineering (General). Civil engineering (General)
在线阅读:http://eprints.utm.my/id/eprint/88046/1/AizatMohdTaib2019_InfluenceofInitialConditionsonUnsaturated.pdf
http://eprints.utm.my/id/eprint/88046/
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spelling my.utm.880462020-12-15T00:12:26Z http://eprints.utm.my/id/eprint/88046/ Influence of initial conditions on unsaturated groundwater flow models Mohd. Taib, Aizat Taha, Mohd. Raihan Abang Hasbollah, Dayang Zulaika TA Engineering (General). Civil engineering (General) Slope failure in unsaturated soils is common in tropical countries due to the seasonal pattern of abundant rainfall preceding a period of prolonged drying. Much research has been undertaken to understand the behaviour of unsaturated slopes and reduce the number of catastrophic failures. The initial conditions are important factors in numerical modelling of the groundwater flow yet rarely considered in detail in the literature. This paper presents a parametric study of the initial conditions at a slope in Bukit Timah, Singapore. The intensity and duration of rainfall are varied to assess the effect on the pore-water pressure in the slope. The generated pore-water pressure profile is compared with field measurements and previous numerical studies. It is discovered that a low rainfall, with an intensity of 1x10-7 m/s over a period of 62 days, results in initial pore-water pressure which is consistent with data recorded at the field. Unlike the duration, changes in the rainfall intensity are shown to have a significant effect on the pore-water pressure in the slope. This study, therefore, demonstrates the importance of determining appropriate initial conditions in unsaturated groundwater flow analysis. Science Publishing Corporation 2019 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/88046/1/AizatMohdTaib2019_InfluenceofInitialConditionsonUnsaturated.pdf Mohd. Taib, Aizat and Taha, Mohd. Raihan and Abang Hasbollah, Dayang Zulaika (2019) Influence of initial conditions on unsaturated groundwater flow models. International Journal of Engineering & Technology, 8 (1.2). pp. 34-40. ISSN 2227-524X blob:https://www.sciencepubco.com/1efa8cd9-e4cb-4728-a102-9d61f804dbea
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Mohd. Taib, Aizat
Taha, Mohd. Raihan
Abang Hasbollah, Dayang Zulaika
Influence of initial conditions on unsaturated groundwater flow models
description Slope failure in unsaturated soils is common in tropical countries due to the seasonal pattern of abundant rainfall preceding a period of prolonged drying. Much research has been undertaken to understand the behaviour of unsaturated slopes and reduce the number of catastrophic failures. The initial conditions are important factors in numerical modelling of the groundwater flow yet rarely considered in detail in the literature. This paper presents a parametric study of the initial conditions at a slope in Bukit Timah, Singapore. The intensity and duration of rainfall are varied to assess the effect on the pore-water pressure in the slope. The generated pore-water pressure profile is compared with field measurements and previous numerical studies. It is discovered that a low rainfall, with an intensity of 1x10-7 m/s over a period of 62 days, results in initial pore-water pressure which is consistent with data recorded at the field. Unlike the duration, changes in the rainfall intensity are shown to have a significant effect on the pore-water pressure in the slope. This study, therefore, demonstrates the importance of determining appropriate initial conditions in unsaturated groundwater flow analysis.
format Article
author Mohd. Taib, Aizat
Taha, Mohd. Raihan
Abang Hasbollah, Dayang Zulaika
author_facet Mohd. Taib, Aizat
Taha, Mohd. Raihan
Abang Hasbollah, Dayang Zulaika
author_sort Mohd. Taib, Aizat
title Influence of initial conditions on unsaturated groundwater flow models
title_short Influence of initial conditions on unsaturated groundwater flow models
title_full Influence of initial conditions on unsaturated groundwater flow models
title_fullStr Influence of initial conditions on unsaturated groundwater flow models
title_full_unstemmed Influence of initial conditions on unsaturated groundwater flow models
title_sort influence of initial conditions on unsaturated groundwater flow models
publisher Science Publishing Corporation
publishDate 2019
url http://eprints.utm.my/id/eprint/88046/1/AizatMohdTaib2019_InfluenceofInitialConditionsonUnsaturated.pdf
http://eprints.utm.my/id/eprint/88046/
_version_ 1687393521227530240
score 13.251813

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