江苏省稻作区低压管道灌溉适宜控制规模研究

【目的】充分考虑工程经济性、实用性以及江苏省的现实情况,提出适合江苏省的低压管道输水灌溉工程的适宜控制规模。【方法】初步分析江苏省稻作区管道灌溉系统适宜控制规模的影响因素,建立灌溉管网的系统优化模型并采用界限流量法求解该模型。按照优化模型,估算出不同灌溉工程规模下的管网系统年费用,得到系统控制规模与单位面积年费用的关系。【结果】绘制系统控制规模与单位面积年费用关系图,在综合考虑工程建设投资和后期运行、管理和维护的情况下,建议管灌系统工程的适宜控制规模为23～30 hm2。【结论】根据现实情况适当选取管道灌溉工程的控制规模,对于节省工程投资以及工程运行后期的管理维护具有现实意义。

Study on Suitable Control Scale of Low Pressure Pipeline Irrigation in Rice Growing Area of Jiangsu Province

【Objective】Considering the economy and practicability of the project as well as the reality of Jiangsu Province, the appropriate control scale of low-pressure pipeline irrigation project suitable for Jiangsu Province is proposed.【Method】The influencing factors of suitable control scale of pipeline irrigation system in rice-growing areas of Jiangsu Province were preliminarily analyzed, and the system optimization model of irrigation pipe network was established and solved by the boundary flow method. According to the optimization model, the annual cost of the pipe network system under different irrigation project scales was estimated, and the relationship between the system control scale and the annual cost per unit area was obtained.【Result】Drawing the relationship diagram between the system control scale and the annual cost per unit area, considering the investment in the project construction and the later operation, management and maintenance, it was suggested that the appropriate control scale for the pipe irrigation system project was 23～30 hm2.【Conclusion】Proper selection of the control scale of the pipeline irrigation project according to the actual situation was of practical significance for saving project investment and management and maintenance in the later period of project operation.