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Stability assessment approach for soil slopes in seasonal cold regions

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Title: Stability assessment approach for soil slopes in seasonal cold regions
Authors: Subramanian, Srikrishnan Siva Browse this author
Ishikawa, Tatsuya2 Browse this author
Tokoro, Tetsuya Browse this author
Authors(alt): 石川, 達也2
Keywords: Slope stability
Seasonal cold regions
Non-isothermal seepage
Freeze-thaw action
Snowmelt water
Issue Date: 20-Apr-2017
Publisher: Elsevier
Journal Title: Engineering geology
Volume: 221
Start Page: 154
End Page: 169
Publisher DOI: 10.1016/j.enggeo.2017.03.008
Abstract: In Hokkaido Japan, soil slope failures along some of the national highways are reported frequently in recent years. A stability assessment method which can consider the impact of seasonal changes like freeze-thaw action, snow melt water infiltration etc. is of utmost importance and considered to be an immediate requirement for geotechnical practitioners, in order to properly predict the slope stability. In this study, a slope stability assessment approach based on two-dimensional numerical modelling is recommended which considers the water content changes of the soil induced by the seasonal climatic effects i.e. freeze-thaw action, snowmelt water infiltration etc. Two case studies of slope failures in Hokkaido have been studied using the recommended approach. In order to visualise the climatic parameters of most influence on slope stability, parametric studies have been performed through which many useful results in view of the soil slope stability in seasonal cold regions have been obtained. It is found that the freeze-thaw action has a considerable impact on the soil water content and slope stability. On the other hand, the snowmelt water infiltration has a very significant impact on soil slope stability. The recommended numerical modelling approach is found to be very useful in analysing the soil slope stability in seasonal cold regions. (C) 2017 Elsevier B.V. All rights reserved.
Rights: © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
https://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/73692
Appears in Collections:公共政策学教育部・公共政策学連携研究部 (Graduate School of Public Policy / Faculty of Public Policy) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 石川 達也

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