Development of anchor equiped with distributed fiber optic sensor for prediction of landslides
| Project/Area Number |
15H05350
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Natural disaster / Disaster prevention science
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| Research Institution | Shimane University |
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Principal Investigator |
Kogure Tetsuya 島根大学, 総合理工学研究科, 助教 (70534006)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥23,660,000 (Direct Cost: ¥18,200,000、Indirect Cost: ¥5,460,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥21,060,000 (Direct Cost: ¥16,200,000、Indirect Cost: ¥4,860,000)
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| Keywords | 光ファイバー / 地すべり / モニタリング / ボーリング孔 / 分布式光ファイバーセンシング / TW-COTDR / レイリー散乱光 / 降雨 / 減災 / 自然現象観測・予測 / 自然災害 / 土砂災害 / 斜面崩壊 |
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| Outline of Final Research Achievements |
Fiber optic cable was installed into a vertical borehole with its depth of 16 m in a landslide. Strain changes along the borehole were measured from June to October 2017 with spatial resolution of 10 cm. Results show that strain clearly increased with rainfall events. Distinctive strain changes are found at the depths of (1) 1－5 m, (2) approximately 8 m, and (3) 14－15.5 m. The strain changes around 8 m appear to show a deformation of the slip plane. This study has developed a promising geophysical method which can become a major current for landslide monitoring.
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Report
(4 results)
Research Products
(33 results)
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[Presentation] Application of repeated impacts method of the Schmidt hammer test to coastal cliff surface at Shimane, Japan: evaluation of the degree of weathering2017
Author(s)
Kogure, T., Tanaka, K., Ohira, H., Naka, Y., Tsukamoto, R.
Organizer
JpGU-AGU Joint Meeting 2017
Related Report
Int'l Joint Research / Invited
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[Presentation] Mitigating effects of successive small-scale collapses of coastal cliffs due to crystallization of calcite on large-scale collapses in Isotake coast, Shimane, Japan.2015
Author(s)
Kogure, T., Tanaka, K., Naka, Y., Tsukamoto, R.
Organizer
13th International Symposium on Geo-disaster Reduction
Place of Presentation
Prague, Czech Republic
Year and Date
2015-08-09
Related Report
Int'l Joint Research
