Effectiveness of Dual Capillary Barrier as slope protection

F. R. Harnas; H. Rahardjo; A. Satyanaga; E. C. Leong

doi:10.1201/b21520-128

Effectiveness of Dual Capillary Barrier as slope protection

F. R. Harnas, H. Rahardjo, A. Satyanaga, E. C. Leong

Nanyang Technological University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Capillary barrier is a cover system that limits water infiltration into the underlying soil by utilizing the contrast between hydraulic properties of the fine- and coarse-grained materials. A dual capillary barrier was recently developed in order to increase the performance of capillary barrier in limiting water infiltration into the underlying soil. The performance of dual capillary barrier as a slope protection has not been investigated. The objective of this study is to investigate the effectiveness of a dual capillary barrier for slope protection. A case study of NTU-ANX slope that failed in 1995 was selected. Numerical simulations were performed to investigate the effectiveness of a Single Capillary Barrier (SCB) and Dual Capillary Barrier System (DCB) in reducing water infiltration into the NTU-ANX slope. The numerical simulations of NTU-ANX slope showed that the failure of the slope was triggered by rainfall infiltration. The antecedent rainfall that occurred before the major rainfall event was critical to the failure. The SCB and DCB cover systems decreased the infiltration into the slope. The DCB is the more effective cover system to reduce the water infiltration that leads to less changes in factor of safety of the slope.

Original language	English
Title of host publication	Landslides and Engineered Slopes. Experience, Theory and Practice
Editors	Stefano Aversa, Leonardo Cascini, Luciano Picarelli, Claudio Scavia
Publisher	Taylor and Francis Inc.
Pages	1069-1075
Number of pages	7
ISBN (Print)	9781138029880, 9781138029880, 9781138029880
DOIs	https://doi.org/10.1201/b21520-128
Publication status	Published - 2016
Externally published	Yes
Event	12th International Symposium on Landslides, 2016 - Napoli, Italy Duration: Jun 12 2016 → Jun 19 2016

Publication series

Name	Landslides and Engineered Slopes. Experience, Theory and Practice
Volume	2

Conference

Conference	12th International Symposium on Landslides, 2016
Country/Territory	Italy
City	Napoli
Period	6/12/16 → 6/19/16

Bibliographical note

Publisher Copyright:
© 2016 Associazione Geotecnica Italiana, Rome, Italy.

ASJC Scopus Subject Areas

Earth-Surface Processes

Access to Document

10.1201/b21520-128

Cite this

Harnas, F. R., Rahardjo, H., Satyanaga, A., & Leong, E. C. (2016). Effectiveness of Dual Capillary Barrier as slope protection. In S. Aversa, L. Cascini, L. Picarelli, & C. Scavia (Eds.), Landslides and Engineered Slopes. Experience, Theory and Practice (pp. 1069-1075). (Landslides and Engineered Slopes. Experience, Theory and Practice; Vol. 2). Taylor and Francis Inc.. https://doi.org/10.1201/b21520-128

Harnas, F. R. ; Rahardjo, H. ; Satyanaga, A. et al. / Effectiveness of Dual Capillary Barrier as slope protection. Landslides and Engineered Slopes. Experience, Theory and Practice. editor / Stefano Aversa ; Leonardo Cascini ; Luciano Picarelli ; Claudio Scavia. Taylor and Francis Inc., 2016. pp. 1069-1075 (Landslides and Engineered Slopes. Experience, Theory and Practice).

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title = "Effectiveness of Dual Capillary Barrier as slope protection",

abstract = "Capillary barrier is a cover system that limits water infiltration into the underlying soil by utilizing the contrast between hydraulic properties of the fine- and coarse-grained materials. A dual capillary barrier was recently developed in order to increase the performance of capillary barrier in limiting water infiltration into the underlying soil. The performance of dual capillary barrier as a slope protection has not been investigated. The objective of this study is to investigate the effectiveness of a dual capillary barrier for slope protection. A case study of NTU-ANX slope that failed in 1995 was selected. Numerical simulations were performed to investigate the effectiveness of a Single Capillary Barrier (SCB) and Dual Capillary Barrier System (DCB) in reducing water infiltration into the NTU-ANX slope. The numerical simulations of NTU-ANX slope showed that the failure of the slope was triggered by rainfall infiltration. The antecedent rainfall that occurred before the major rainfall event was critical to the failure. The SCB and DCB cover systems decreased the infiltration into the slope. The DCB is the more effective cover system to reduce the water infiltration that leads to less changes in factor of safety of the slope.",

author = "Harnas, {F. R.} and H. Rahardjo and A. Satyanaga and Leong, {E. C.}",

note = "Publisher Copyright: {\textcopyright} 2016 Associazione Geotecnica Italiana, Rome, Italy.; 12th International Symposium on Landslides, 2016 ; Conference date: 12-06-2016 Through 19-06-2016",

year = "2016",

doi = "10.1201/b21520-128",

language = "English",

isbn = "9781138029880",

series = "Landslides and Engineered Slopes. Experience, Theory and Practice",

publisher = "Taylor and Francis Inc.",

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Harnas, FR, Rahardjo, H, Satyanaga, A & Leong, EC 2016, Effectiveness of Dual Capillary Barrier as slope protection. in S Aversa, L Cascini, L Picarelli & C Scavia (eds), Landslides and Engineered Slopes. Experience, Theory and Practice. Landslides and Engineered Slopes. Experience, Theory and Practice, vol. 2, Taylor and Francis Inc., pp. 1069-1075, 12th International Symposium on Landslides, 2016, Napoli, Italy, 6/12/16. https://doi.org/10.1201/b21520-128

Effectiveness of Dual Capillary Barrier as slope protection. / Harnas, F. R.; Rahardjo, H.; Satyanaga, A. et al.
Landslides and Engineered Slopes. Experience, Theory and Practice. ed. / Stefano Aversa; Leonardo Cascini; Luciano Picarelli; Claudio Scavia. Taylor and Francis Inc., 2016. p. 1069-1075 (Landslides and Engineered Slopes. Experience, Theory and Practice; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Effectiveness of Dual Capillary Barrier as slope protection

AU - Harnas, F. R.

AU - Rahardjo, H.

AU - Satyanaga, A.

AU - Leong, E. C.

PY - 2016

Y1 - 2016

N2 - Capillary barrier is a cover system that limits water infiltration into the underlying soil by utilizing the contrast between hydraulic properties of the fine- and coarse-grained materials. A dual capillary barrier was recently developed in order to increase the performance of capillary barrier in limiting water infiltration into the underlying soil. The performance of dual capillary barrier as a slope protection has not been investigated. The objective of this study is to investigate the effectiveness of a dual capillary barrier for slope protection. A case study of NTU-ANX slope that failed in 1995 was selected. Numerical simulations were performed to investigate the effectiveness of a Single Capillary Barrier (SCB) and Dual Capillary Barrier System (DCB) in reducing water infiltration into the NTU-ANX slope. The numerical simulations of NTU-ANX slope showed that the failure of the slope was triggered by rainfall infiltration. The antecedent rainfall that occurred before the major rainfall event was critical to the failure. The SCB and DCB cover systems decreased the infiltration into the slope. The DCB is the more effective cover system to reduce the water infiltration that leads to less changes in factor of safety of the slope.

AB - Capillary barrier is a cover system that limits water infiltration into the underlying soil by utilizing the contrast between hydraulic properties of the fine- and coarse-grained materials. A dual capillary barrier was recently developed in order to increase the performance of capillary barrier in limiting water infiltration into the underlying soil. The performance of dual capillary barrier as a slope protection has not been investigated. The objective of this study is to investigate the effectiveness of a dual capillary barrier for slope protection. A case study of NTU-ANX slope that failed in 1995 was selected. Numerical simulations were performed to investigate the effectiveness of a Single Capillary Barrier (SCB) and Dual Capillary Barrier System (DCB) in reducing water infiltration into the NTU-ANX slope. The numerical simulations of NTU-ANX slope showed that the failure of the slope was triggered by rainfall infiltration. The antecedent rainfall that occurred before the major rainfall event was critical to the failure. The SCB and DCB cover systems decreased the infiltration into the slope. The DCB is the more effective cover system to reduce the water infiltration that leads to less changes in factor of safety of the slope.

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DO - 10.1201/b21520-128

M3 - Conference contribution

AN - SCOPUS:84984783707

SN - 9781138029880

T3 - Landslides and Engineered Slopes. Experience, Theory and Practice

SP - 1069

EP - 1075

BT - Landslides and Engineered Slopes. Experience, Theory and Practice

A2 - Aversa, Stefano

A2 - Cascini, Leonardo

A2 - Picarelli, Luciano

A2 - Scavia, Claudio

PB - Taylor and Francis Inc.

T2 - 12th International Symposium on Landslides, 2016

Y2 - 12 June 2016 through 19 June 2016

ER -

Effectiveness of Dual Capillary Barrier as slope protection

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus Subject Areas

Access to Document

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