| Project/Area Number |
24656289
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geotechnical engineering
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| Research Institution | Chiba Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2012 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | 地盤工学 / 防災 / 耐震 / 砂地盤 / 液状化 / 不飽和 / 地盤改良 / シミュレーション解析 / 電気抵抗 / マイクロバブル水 |
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| Research Abstract |
A countermeasure against sand liquefaction by desaturation was investigated. The method to evaluate the degree of saturation by electric resistivity and the numerical method to evaluate the area of unsaturation were investigated. The electro-conductivity of the pore water and the area to be measured have significant effects on the correlation between the degree of saturation and the electrical resistivity. It is possible by using the present numerical calculation method to qualitatively estimating the distribution of degree of saturation in horizontal direction around the well for injecting air or micro-bubble water. It is important to precisely evaluate the hydraulic characteristics and the anisotropy of permeability of in-situ soils and the volume of injected air or micro-bubble water for quantitative evaluation of the area of unsaturation.
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