1、 西藏农牧学院本科毕业设计（论文） 1 摘 要 仙村地处雅鲁藏布江左岸，属卧龙镇下辖的一行政村，位于米林县卧龙镇政府所在地，该村现有耕地 420 亩，土渠仅能满足 155 亩耕地灌溉用水，尚有 265 亩不能满足。耕地主要种植小麦、青稞等农作物。 现经过项目改造后， 设计灌溉面积为 1860 亩 。 本设计在对灌区灌溉渠系规划布局的基础上， 项目区现没有成熟的灌溉制度和灌水定额，灌溉制度的确定只能参照周边已建灌区的多年灌溉经验。本水渠灌溉制度参照林芝地区米林县和朗县、山南地区加查县灌区灌溉制度 ， 确定的灌溉制度 。由作物灌溉制度作出灌水率图并进行修正，修正后得 到设计灌水率，根据设计灌水率，
2、推算渠道设计流量，然后设计各级渠道的纵横断面。本设计重点工程是渠道工程取水枢纽和灌水率进行设计。 关键词； 灌溉制度 ； 设计流量 ； 取水枢纽 ； 灌水率 西藏农牧学院本科毕业设计（论文） 2 Abstract fairy village is located in the left bank of the yarlung zangbo river, belongs to the wolong town has an administrative village, located in MiLinXian wolong township government is located, the
3、village of existing arable land 420 mu, earth canal can meet 155 mu of farmland irrigation water only, there are 265 mu of cant meet. Cultivated land is mainly planting crops such as wheat and barley. This design in the irrigation area of irrigation canal system layout, on the basis of the project a
4、rea is not the mature system of irrigation and irrigation quota, irrigation system to determine the only reference to the surrounding of the irrigation area irrigated experience for many years. This reference to nyingchi MiLinXian canal irrigation system and LangXian, shannan giacha county system of
5、 irrigated area, irrigation system is determined. Irrigation rate figure made by crop irrigation system and amended, revised design irrigation rate, according to the design of irrigation rate, calculate channel design flow, and then design channels at all levels of vertical and horizontal section. This design is the channel project of key projects for water hub and irrigation rate design. Key words； Irrigation system； Design flow； Water hub； irrigation
