| Project/Area Number |
04650440
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
基礎・土質工学
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| Research Institution | Okayama University |
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Principal Investigator |
KOHNO Iichiro Okayama Univ., Faculty of Engineering, Professor, 工学部, 教授 (00025941)
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| Co-Investigator(Kenkyū-buntansha) |
TAKESHITA Yuji Okayama Univ., The Graduate School of Natural Science and Technology, Lecturer, 大学院・自然科学研究科, 講師 (90188178)
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| Project Period (FY) |
1992 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1992: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Pumping design / Dewatering method / Deep well method / Groundwater / 浸透 / 多層帯水層 / 浸透特性 |
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| Research Abstract |
An optimal design method is presented for dewatering a excavation site. It predicts the optimum number of deep wells, their locations, and the rate of pumping needed to maintain ground water levels below specified elevations at steady and unsteady state. In our proposed method a linear programming method is used to determine the pumping rate at steady state and AIC is used to suggest the optimum deep well locations.
This is accomplished by including the finite element analysis of two-dimensional steady seepage flow. Nonlinear least-squares algorithm incorporating finite element analysis of unsteady seepage flow is used to compute the pumping rate required to reach ground water levels below appointed elevation in a prescribed time. The method is applied to several examples of dewatering for a large excavation site in unconfined aquifer models.
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