A CONSIDERATION FOR EVALUATING OF SLOPE HEALTH MONITORING DURING RAINFALL FOCUSING ON VOLUMETRIC WATER CONTENT
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- KOIZUMI Keigo
- 大阪大学 大学院工学研究科
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- KOMATSU Mitsuru
- 岡山大学 大学院環境生命科学研究科
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- ODA Kazuhiro
- 大阪産業大学 工学部都市創造工学科
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- ITO Shinichi
- 鹿児島大学 学術研究院理工学域工学系
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- TSUTSUMI Hiroshi
- 西日本高速道路(株) 関西支社
Bibliographic Information
- Other Title
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- 体積含水率に着目した降雨時の斜面の健全性を評価するための一考察
Abstract
<p> Rainfall-induced shallow landslides have become more frequent owing to recent occurrences of extreme weather in Japan. The authors obtained research finding from previous studies that slope deformation due to rainfall-induced shallow landslide starts to increase after reaching the initial quasi-saturated volumetric water content (IQS). On the other hand, it was pointed out as problems to confirm the behavior of volumetric water content in the depth direction with respect to slope deformation and verify the consistency between the model test result and the filed measurement result. In this research, we summarized the results of a model experiment and a field measurement to solve these problems. By grasping the temporal change of volumetric water content in the depth direction, it is possible to understand the process from detection of IQS to formation of saturated zone, rise of water level and occurrence of displacement. When the measurement result on the actual slope were considered based on the result of the model slope experiment, it was confirmed that the result on the actual slope agree well with the result of the model slope experiment. In addition, when the IQS index was created as an index for judging whether the slope reached the IQS during rainfall and applied to the measured data on the actual slope, it was shown that the time when the volumetric water content reached IQS could be detected in real time.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)
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Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) 77 (2), 129-139, 2021
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390851032061908096
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- NII Article ID
- 130008040578
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- ISSN
- 21856516
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed