三原县2018年农田水利建设水资源供需平衡分析

Key points of impervious curtain design for rock dam foundation

分析了陕西省三原县2018年农田水利建设项目区基本情况和水利灌溉中存在的问题。采用水资源供需平衡法,对项目区设计水平年内水源、灌溉制度、可供水量和农作物需水量分别进行了探讨论证,提出在灌溉保证率75%的情况下,项目区需水量210.11万m^3,可供水量219.15万m^3,富余水量9.04万m^3,可以参考借鉴。

The author analyzed the basic situation of farmland water conservancy project areas and existing irrigation problems of Sanyuan County of Shaanxi Province in 2018.By water resources supply and demand balance method,the author studied the indexes of project areas including water sources,irrigation system,available water supply amount and crop water demands of design level year,put forward that under a irrigation guarantee rate of 75%,the water demand of project area is 2.1011×10^6 m^3,available water supply 2.1915×10^6 m^3,with a margin water amount of 90.4×10^3 m^3.