2016 Fiscal Year Final Research Report
Capillary barrier using geosynthetics for slope disaster prevention at heavy rain
| Project/Area Number |
26420480
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Shinshu University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 地盤工学 / 斜面防災 / 不飽和土 / サクション / ジオシンセティックス / 保水特性 / 透水性 / 圧密特性 |
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| Outline of Final Research Achievements |
A series of water retention tests were carried out for seven nonwoven geotextiles in different materials and processes of manufacture. The van Genuchten model was applied to the water retention curve obtained from the above-mentioned test and published data. Estimation of the water retention curve using the saturated hydraulic conductivity of nonwoven geotextile was examined. Main conclusions are as follows. The water retention curves in drainage phase of nonwoven geotextiles are S-shaped curve just like that of soil materials. And the curves of nonwoven geotextiles can be estimated by the van Genuchten model. By carrying out only the permeability test of saturated nonwoven geotextiles, it is suggested that the water retention curve in drainage phase can be estimated.
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| Free Research Field |
地盤工学
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