2016 Fiscal Year Final Research Report
A Study on Landslide Risk Mitigation Considering Characteristic on Runoff and Infiltration in Southeast Asian Countries
Project/Area Number |
26303009
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 海外学術 |
Research Field |
Geotechnical engineering
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Research Institution | Kyoto University |
Principal Investigator |
Ohtsu Hiroyasu 京都大学, 工学(系)研究科(研究院), 教授 (40293881)
|
Co-Investigator(Kenkyū-buntansha) |
立川 康人 京都大学, 工学(系)研究科(研究院), 教授 (40227088)
小林 晃 関西大学, 工学部, 教授 (80261460)
|
Research Collaborator |
Noppadol Phienwej アジア工科大学院
Suttisak Soralump カセサート大学
Yabe Mitsuru 応用地質株式会社
Takahashi Kenji 水文技術コンサルタント
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Keywords | 地盤工学 / 自然災害 |
Outline of Final Research Achievements |
The results of laboratory tests and filed monitoring at a fill slope comprising weathered granite residual soil showed high porosity area is generated. It is considered that the most plausible reason for it may be attributed to leaching of fine particle fraction due to lateral flow. It reveals the fact that since fill slopes are constructed by using disturbed soil material, bonding strength of subsoil in fill slope is much weaker than that in natural slope and cut slope. And the leaching of fine particle fraction causes reduction in cohesion of subsoil and consequently increases landslide risk. Therefore, it is pointed out that the investigation for fill slopes comprising relatively high permeable soil requires considering degrading procedure in shear strength caused by leaching of fine particle fraction with time.
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Free Research Field |
工学
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