Manandhar, Mukti Narayan creator Loof, Rainer Chairperson Paudyal, Guna N. Co-Chairperson Gupta, Ashim Das Examination Committee Murty, V.V.N. Examination Committee The Royal Government of The Netherlands Scholarship Donor text th Bangkok Asian Institute of Technology 1991 monographic eng

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96 p. Irrigation 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 . A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1991 Irrigation pumps Simulation methods Crops Water requirements Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B17747 http://203.159.5.9/ait-thesis/detail.php?q=B17747 150698 20260818170743.0