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035 _a.b1048114x
099 9 _aAIT Thesis no. WA-91-11
100 1 _aManandhar, Mukti Narayan
245 1 0 _aOptimal operation plan of a pump irrigation system
260 _aBangkok :
_bAsian Institute of Technology,
_c1991
300 _a96 p.
490 1 _aThesis ;
_vno. WA-91-11
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, 1991
520 _aIrrigation planning and the analysis of pump failure consequences are studied in this study. An optimization model is formulated for planning purpose, while a simul ati on routine is developed to examine the effect of pump failures. A large lift irrigation system in Nepal , the Chitwan Irrigation Project is chosen for the model application. A decade(lO days) based irrigation planning model is formulated for determining the optimal cropping pattern, and the pumping requirements in an existing irrigation system. Comparison of existing pattern with the optimal cropping pattern derived for maximizing net benefit is much different with respect to winter crops. Actually in the system, due to lack of pre-announcement of water distribution schedule, farmers are unknown to the future schedule. Besides, there is uncertainty about crop yields as well as expected rainfall in the period, especially f o r the poor farmers who are completely dependent on agriculture alone. In the simulation model, consideration of pump failure is taken as an independent random variable and is simulated by Monte Carlo Simulation technique . A water distribution policy based on equality is considered. A dated crop production function is empl oyed to evaluate the yield effects. Cropping patterns for the proposed extension area have also been developed using the Linear Programming Model, with the objective of maximizing the net benefit. The required pump capacity for fulfilling the irrigation demand has also been determined which is slightly higher than the pump capacity proposed by the project. Sensitivity analysis is performed t o study the effects of changes in some parameters in the optimal result. The installed pump capacity of the first stage pumping station is found to be sufficient to meet the net irrigation requirement upto 10% increase in demand .
650 0 _aIrrigation pumps
_xSimulation methods
650 0 _aCrops
_xWater requirements
700 1 _aLoof, Rainer,
_eChairperson
700 1 _aPaudyal, Guna N.,
_eCo-Chairperson
700 1 _aGupta, Ashim Das,
_eExamination Committee
700 1 _aMurty, V.V.N.,
_eExamination Committee
710 2 _aThe Royal Government of The Netherlands,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. WA-91-11
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B17747
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