Design and Performance Analysis of Low Pressure Irrigation Distribution Systems
Tóm tắt
Low-pressure pipe distribution systems forsurface irrigation provide both off- andon-farm recognized environmental benefits.However, expected benefits can only beattained when adequacy, dependability andequity of systems are high enough tosupport appropriate conditions for wateruse on the farm. An innovative methodologyfor design and analysis is proposed anddescribed, which includes the generation ofthe demand at the scale of the distributionsystem and, consequently, the generation ofthe flow regimes expected during a givenperiod of time, generally the peak month.These flow regimes are utilized for theoptimization of pipe sizes using theiterative discontinuous method for severalflow regimes. The performance analysis isdeveloped through the system simulationwith several flow regimes, which allow thecomputation of the system adequacy,dependability and equity. An application toone sector of the Sorraia irrigation systemillustrates the usefulness of themethodology proposed.
Tài liệu tham khảo
Bethery J. 1990. Réseaux Collectifs d'Irrigation Ramifiés Sous Pression. Calcul et Fonctionnement. Études no. 6, CEMAGREF, Antony.
Bos M.G. 1997. Performance indicators for irrigation and drainage. Irrigational Drainage Systems 11: 119–137.
Burt C.M. & Plusquellec H.L. 1990. Water delivery control. In: G.J. Hoffman, T.A. Howell & K.H. Solomon (Eds) Management of Irrigation Systems (pp 373–423). ASAE, St. Joseph, MI.
Clemmens A.J. 1987. Delivery systems schedules and required capacities. In: D.D. Zimbelman (Ed) Planning, Operation, Rehabilitation and Automation of Irrigation Water Delivery Systems (pp 18–34). ASCE, New York.
Clemmens A.J. & Bos M.G. 1990. Statistical methods for irrigation system water delivery performance evaluation. Irrigational Drainage Systems 4: 345–365.
Goulter I. 1987. Current and future use of systems analysis in water distribution network design. Civil Engineering Systems 4(4): 175–184.
INCID 1998. Pipe Distribution System for Irrigation. Indian National Committee on Irrigation and Drainage, New Delhi.
Labye Y. 1966. Etude des procédés de calcul ayant pour but de rendre minimal le coût d'un réseau de distribution d'eau sous pression. La Houille Blanche 5: 577–583.
Labye Y. 1981. Iterative discontinuous method for networks with one or more flow regimes. In: Proceedings International Workshop on Systems Analysis of Problems in Irrigation, Drainage and Flood Control (pp 31–40). ICID, New Delhi.
Labye Y., Olson M.A., Galand A. & Tsiourtis N. 1988. Design and Optimization of Irrigation Distribution Networks. FAO Irrigation and Drainage Paper No. 44. FAO, Rome.
Lamaddalena N. 1995. Analisi del funzionamento dei sistemi irrigui collettivi. Riv. Irrigazione e Drenaggio 2: 18–26.
Lamaddalena N. 1996. Sulla optimizzazione dei diametri in una rete irrigua con esercizio alla domanda. Riv. Ingegneria Agraria 27(1): 12–19.
Lamaddalena N. 1997. Integrated Simulation Modeling for Design and Performance Analysis of On-Demand Pressurized Irrigation Systems. Ph.D. Dissertation, Instituto Superior de Agronomia, Univ. Técnica de Lisboa, Lisbon.
Lamaddalena N. & Pereira L.S. 1998. Performance analysis of on-demand pressurized irrigation systems. In: L.S. Pereira & J.W. Gowing (Eds) Environment and Water: Innovative Issues in Irrigation and Drainage (pp 247–255). E & FN Spon, London.
Lamaddalena N. & Sagardoy J. A. 2000. Performance Analysis of On-Demand Pressurized Irrigation Systems. FAO Irrigation and Drainage Paper No. 59. FAO, Rome.
Molden D.J. & Gates T.K. 1990. Performance measures for evaluation of irrigation-water delivery systems. Journal of Irrigation and Drainage Engineering 116(6): 804–823.
Pereira L.S. 1988. Modernisation of irrigation systems: a case of research oriented to improve management. Irrigation and Drainage Systems 2(1): 63–77.
Pereira L.S. & Trout T.J. 1999. Irrigation methods. In: H.N. van Lier, L.S. Pereira & F.R. Steiner (Eds) CIGR Handbook of Agricultural Engineering, Vol I: Land and Water Engineering (pp 297–379). ASAE, St. Joseph, MI.
Pereira L.S., Rijo M. & Teixeira J.L. 1990. From upstream to real time management: research for modelling in a surface irrigation system. In: O. Lahlou (Ed) Real Time Scheduling of Water Distribution (pp 147–166). Proc. ICID Symp., Rio de Janeiro. ICID, New Delhi.
Pereira L.S., Douieb A., Bounoua R., Lamaddalena N. & Sousa P.L. 1998. A model for design of low pressure distribution in irrigation systems. In: F. Zazueta & J. Xin (Eds) Computers in Agriculture 1998 (pp 183–191). ASAE, St, Joseph, MI.
Renault D. & Vehmeyer P.W. 1999. On reliability in irrigation service preliminary concepts and application. Irrigation and Drainage Systems 13(1): 75–103.
Rijo M. & Pereira L.S. 1987. Measuring conveyance efficiencies to improve irrigation water management. Irrigation and Drainage Systems 1(3): 267–276.
Teixeira J.L. & Pereira L.S. 1992. ISAREG, an irrigation scheduling model. ICID Bulletin 41(2): 29–48.
van Bentum R. & Smout I.K. 1994. Buried Pipelines for Surface Irrigation. IT Publications, London, and WEDC, Loughborough.