2024-03-28T21:27:54Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/736922022-11-17T02:08:08Zhdl_2115_20054hdl_2115_526Stability assessment approach for soil slopes in seasonal cold regionsSubramanian, Srikrishnan Siva1000060359479Ishikawa, Tatsuya石川, 達也Tokoro, Tetsuyaopen access© 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 InternationalSlope stabilitySeasonal cold regionsNon-isothermal seepageFreeze-thaw actionSnowmelt water500In 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.Elsevier2017-04-20engjournal articleAMhttp://hdl.handle.net/2115/73692https://doi.org/10.1016/j.enggeo.2017.03.0080013-7952AA00635799Engineering geology221154169https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/73692/2/Figures.pdfapplication/pdf2.81 MB2017-04-20https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/73692/3/Tables_Revised.pdfapplication/pdf158.81 KB2017-04-20https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/73692/1/manuscript_revision.pdfapplication/pdf677.27 KB2017-04-20