INVESTIGATION OF OPTIMAL OPERATION STRATEGIES FOR IRRIGATION SYSTEMS

Muhammad, Zubair Khan (2006) INVESTIGATION OF OPTIMAL OPERATION STRATEGIES FOR IRRIGATION SYSTEMS. Doctoral thesis, University Of Engineering And Technology, Taxila.

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Abstract

The operation of an upstream and downstream control irrigation systems was studied at main, secondary and tertiary levels with regard to water saving. The study focused on the investigation of the existing operational practices and evaluation of alternate operational options. The main goal was to study water saving strategies in downstream control systems. The study is based on the integrated use of different models and approaches at different levels of an irrigation system. At main canal level Crop Based Irrigation Operations (CBIO) model was applied as a water saving strategy. The model computes irrigation rotations among secondary canals in a downstream control system. It was applied to a real system of irrigation named as Maira Branch of Upper Swat Canal, Pakistan. For investigations at secondary level, Canalman model was applied to five Secondary canals and one main branch of the Upper Swat Canal Irrigation System. The main operational strategies evaluated at secondary level were night closure of secondary canals in the periods of low irrigation demand and operation of the canals at reduced discharges. Performance assessment was made to determine the feasibility of secondary canal operation at different discharges. Modifications in outlet dimensions were estimated for better performance. At tertiary level Geographical Information System (GIS) based modeling was used to compute the monthly irrigation durations of different fields and by different users of a tertiary unit. Some data was collected in collaboration with International Water Management Institute and NWFP Irrigation Department. This included discharges of the main canals and design data of the main and secondary canals. Other data was taken through field measurements which included daily discharges of secondary and tertiary canals, verification of the design data of the secondary canals and cropping patterns. The results indicated that there was over supply to the system. Application of CBIO model achieved 50% wate

Item Type: Thesis (Doctoral)
Uncontrolled Keywords: optimal operation strategies, irrigation systems, crop based irrigation operations, upstream control irrigation, downstream control irrigation, canalman
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Depositing User: Muhammad Khan Khan
Date Deposited: 07 Nov 2016 08:47
Last Modified: 07 Nov 2016 08:47
URI: http://eprints.hec.gov.pk/id/eprint/3153

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