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    题名: 以系統動力模型評估農業灌溉系統之研究;Application of System Dynamics modeling to Estimate Agricultural Irrigation system
    作者: 蔡欣妤;Hsin-yu Tsai
    贡献者: 土木工程研究所
    关键词: 系統動力模式;農業灌溉;Vinsim model;irrigation water supply
    日期: 2009-07-01
    上传时间: 2009-09-18 17:27:11 (UTC+8)
    出版者: 國立中央大學圖書館
    摘要: 本研究選取桃園大圳二支線為研究區域,二支線之灌溉水源取自於石門水庫與埔心溪及南崁溪,利用系統動力模式建立農業灌溉系統,在降雨提供之雨量及有限灌溉水源下,以民國97年資料進行灌溉用水模擬。經由改變引灌水量操作方式及河水堰取水量,探討對引灌水使用量之影響。模式共分成五個方案,方案一至四將引灌水量根據操作方式之不同,而有所調整。方案五則是減少河水堰之供水量至50%。模擬結果顯示,根據田間貯蓄水深控制引灌水量後,總引灌水量減少266公厘至366公厘。而完全不供應桃園大圳引灌水量後,灌區依舊可維持作物生長需求。根據缺口高度擇日供水之操作方式可節省約200公厘之引灌水量,此種方式在人工操作上之可行性較高。而將河水堰減量供應至五成後,於C區灌區之模擬結果發現,於直一、直二、直三及沙崙灌區依舊可維持作物生長需求。 This research investigated the influence of irrigation water requirement with the change of irrigation operation including channel supply and wire supply. Taoyuan Channel #2 Feeder was selected as study area. The irrigation resource included Shihmen reservoir, Nankan stream and Puxin stream. The agriculture irrigation system model was established by Vinsim model and irrigation water supply data in 2008 was applied. The simulation was divided into five cases. In case 1 to 4, the water supply from the reservoir was reduced in different patterns, up to 0 mm, while in Case 5 the supply from the river weir was changed. Case1 to Case 4 was to investigate the adjusted irrigation water volume which depended on operation methods. Case 5 was to simulate when half of water was supplement by weir gradually. The result showed that the total irrigation water volume decreased to 266mm and 366mm, which depended on paddy storage depth. The rice paddy with weir water supply only could maintain corps survival. The water supply operation which based on the height of ridge could save 200mm of irrigation water. This approach shows high feasibility on operation. Case5 simulation result indicated that the corps still maintained survival in downstream irrigation area. This study applied Vinsim model to evaluate the impact of irrigation water supply from two sources on the number 2 Feeder rice paddy in Tao-Yuan county, Taiwan. The rice paddy was divided into three zones, A, B and C respectively. These water supply sources originated from the Shimen reservoir via the number 2 Feeder canal and a river weir. Rainfall, evaporation and irrigation supply data from these two sources for 2008 were used to simulate in this study. The water supply from the sources were changed in to 5 cases, The results showed that for case 1 and 2, two zones A, B of rice paddy can satisfy crop growth demand, but for cases 3 and 4, zone B can not satisfy about 10 days of August. In case 5, the water supply from the river weir was reduced 50%. From the application of model it was found out that only these areas d1, d2, d3 and Shalun of Zone C satisfy crop growth demand.
    显示于类别:[土木工程研究所] 博碩士論文

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