Development of Reasonable Management System of Groundwater Basin

Research Project

Project/Area Number	04650436
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	基礎・土質工学
Research Institution	Nagoya University
Principal Investigator	UESHITA Kano Nagoya University, Faculty of Engineering, Professor, 工学部, 教授 (70023033)
Co-Investigator(Kenkyū-buntansha)	DAITO Kenji Nagoya University, Faculty of Engineering, Research, Associate, 工学部, 助手 (30179931)
Project Period (FY)	1992 – 1993
Project Status	Completed (Fiscal Year 1993)
Budget Amount *help	¥2,100,000 (Direct Cost: ¥2,100,000) Fiscal Year 1993: ¥500,000 (Direct Cost: ¥500,000) Fiscal Year 1992: ¥1,600,000 (Direct Cost: ¥1,600,000)
Keywords	groundwater / groundwater management / groundwater withdrawal / groundwater head / land subsidence / groundwater flow / numerical simulation
Research Abstract	Land subsidence that had bad influences on coastal alluvial plains was mainly caused by lowering of piezometric heads of groundwater due to the withdrawal from aquifers. The regulations on groundwater use have been put into effect by public agencies. As a result of these regulations, lowered groundwater heads were recovered and subsidence has beed recently retarded, These days, a new type of groundwater management which has the estimation of desirable groundwater heads without land subsidence and of optimal withdrawals with effective use of groundwateris necessary. In this research, the new type of groundwater managenment is discussed. And in the case of Nobi Plain, the estimating method of groundwater heads and optimal distribution of withdrawals for the new type of groundwater management are presented. That method uses one-dimensional F.E.M.for subsidence analysis and three-dimensional F.E.M.for groundwater flow analysis.