| Project/Area Number |
12450414
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
資源開発工学
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| Research Institution | Kumamoto University |
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Principal Investigator |
SUGAWARA Katsuhiko Kumamoto University, Graduate School of Science and Technology, Professor, 自然科学研究科, 教授 (60109668)
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| Co-Investigator(Kenkyū-buntansha) |
OBARA Yuzo Kumamoto University, Faculty of Engineering, Professor, 工学部, 教授 (50135315)
SATO Akira Kumamoto University, Faculty of Engineering, Research Associate, 工学部, 助手 (40305008)
OTANI Jun Kumamoto University, Faculty of Engineering, Professor, 工学部, 教授 (30203821)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥10,000,000 (Direct Cost: ¥10,000,000)
Fiscal Year 2001: ¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 2000: ¥5,300,000 (Direct Cost: ¥5,300,000)
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| Keywords | X-ray / Computed Tomography / X-ray CT / Rock / Fluid flow at a high temperature / Permeation / Image processing / Diffusion |
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| Research Abstract |
X-ray Computed Tomohraphy was successfully utilized for the visualization of fluid flow within geo-materials. In order to design and produce the apparatus for a thermal fluid flow experiment at a high temperature, a series of fundamental experiment was performed by maintaining geo-materials and fluid at constant temperature. Consequently, a chain of technique available for a high temperature experiment was developed together with the theory for interpriting the experimental results.
Namely the subtraction of serial images and the local region avaraging technique were successfully applied to the quantitative analysis of porosity structure, water ratio and concentration of fluid, and the improved sofyware was presented for image processing of the fluid migration in porous media, the strain localization in soil prior to the coefficient of permeability, the diffusion coefficient and the ispersivity required for the thermal fluid flow analysis.
As concerns the fluid flow experiment, a new method called multi-step pressurization procedure has been presented together with the magnitude of the matrix suction along water front, from the subtraction of serial projections obtained by one-demensional water flow experiment. Moreover, a new one-demensional method available for the quantitative solute within porous media at constant flow rate was developed, and a successful case study was presented using the solution of potassium iodide as a tracer.
From the present stydty, it is concluded that the X-ray Computed Tomography is a hopeful monitoring tool presently available for geomechanical model experiment and the quantitative analysis of fluid flow phenmena within rock and soil.
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