基于WebGIS的盈科灌区渠系优化配水模型与系统研究

发布时间：2018-09-01 18:04

【摘要】：科学管理水资源对提高水资源利用率和保障粮食安全具有重要意义,同时节水灌溉是灌区现代化发展的一个重要标志。本文对盈科灌区的观测资料、采集的数据同历史资料进行整理分析,在了解灌区管理工作的基础上,将WebGIS技术应用到灌区管理工作中,实现灌区高效、科学的管理,为灌区管理者提供配水决策。1在灌区某次配水过程中,如何把有限的水量通过各级渠系分配到田间地块,实现灌区尺度上的水资源合理分配。本文采用自上向下的全灌区整体协调的配水策略,建立多级渠系优化配水模型以实现灌区内渠系大流量、短历时配水,减小整个渠系的渗水损失,为盈科灌区优化配水提供理论依据,并采用智能算法中的粒子群算法对模型进行求解。实例研究表明,各级渠系流量变化范围在设计流量的60%-98%之间,干渠渠首流量变化平稳,最大配水时间30.86个配水时段,结果低于传统人工制定的38个配水时段的原配水计划。2建立基于WebGIS的渠系优化配水系统,系统发挥WebGIS技术框架优势,使WebGIS技术和渠系优化配水模型紧密的联系在一起,使灌区的管理者和决策者通过交互方式更加高效的进行灌区管理。
[Abstract]:Scientific management of water resources plays an important role in improving the utilization rate of water resources and ensuring food security. Meanwhile, water saving irrigation is an important symbol of the modernization of irrigation areas. In this paper, the observation data of Yingke irrigation area, the collected data and the historical data are analyzed. On the basis of understanding the management work of the irrigation district, the WebGIS technology is applied to the management of the irrigation district to realize the efficient and scientific management of the irrigation district. How to distribute the limited amount of water to the field plots through the canal system at all levels to realize the rational allocation of water resources on the scale of irrigation area. In this paper, the optimal water distribution model of multi-stage canal system is established by adopting the overall coordinated water distribution strategy of the whole irrigation area from top to bottom to realize the large discharge of canal system and the short duration of water distribution in irrigation area, so as to reduce the water seepage loss of the whole canal system. This paper provides a theoretical basis for the optimization of water distribution in Yingke irrigation area and uses the particle swarm optimization algorithm in the intelligent algorithm to solve the model. A case study shows that the variation range of the flow rate of each level of canal system is between 60% and 98% of the designed flow rate, and the flow rate of the main canal head changes steadily, and the maximum water distribution time is 30.86 water distribution periods. Results compared with the traditional original water distribution plan of 38 water distribution periods, the optimal water distribution system of canal system based on WebGIS was established. The system gave full play to the advantages of WebGIS technology framework and made the WebGIS technology closely related to the optimal water distribution model of canal system. Make the management of irrigation district more efficient through interactive way.
【学位授予单位】：中国科学院大学(中国科学院东北地理与农业生态研究所)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S274;S127

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