000			03009nam a2200397 4500
005			20260818090211.0
008			150698 th eng
035			_a.b10190569
099		9	_aAIT Thesis no.WA-90-37
100	0		_aTo Quoc Dung
245	1	0	_aDesign of a canal system for the North Vamnao Project
260			_aBangkok : _bAsian Institute of Technology, _c1990
300			_a82 p.
490	1		_aThesis ; _vno. WA-90-37
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1990
520			_aThis study deals with the design of an irrigation and drainage system for the North vamnao area, location in the tidal zone of the lower mekong river. Three possible alternatives are suggested for the design, then the system which has the best maximum net benefits and whose costs of construction are acceptable for implementation is then selected. Alternatives based on critical analysis of the physical constraints, present situation, socio-economical consideration and possible future developments are suggested. The CROPWAT package is used for calculating the water requirement and MIKE 11 is used for the design dimensions of the main canal system. Firstly, the MIKE 11 was used to calibrate the flow in the existing channel system, which covers a large area, then to generate water levels around the project. Secondly, the generated water levels are used as boundary conditions for a smaller model (the so-called model 2) to design canal dimensions for the different alternatives. A Combined irrigation and drainage system is recommended for implementation, with a benefit/cost ratio of 3.57 and internal rate of return of 48.1% according to a discount rate of 10%. Within this project, all waste land is exploited and crop circle is increased leading to a higher net benefit.
650		0	_aNorth Vamnao Project
650		0	_aCanals _xVietnam _xVamnao River _xDesign and construction
700	1		_aJensen, Niels Einar, _eChairperson
700	1		_aLoof, Rainer, _eExamination Committee
700	1		_aHarboe, Ricardo, _eExamination Committee
710	2		_aFederal Republic of Germany (DAAD), _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. WA-90-37
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B18618
907			_a.b10190569 _bmnait _cs
902			_a240329
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945			_lmnait
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