庆阳市农田灌溉渠道水力设计研究

Research on Irrigation Channel Design in Qingyang City

为了利用庆阳市含沙量较大的地表水进行农业灌溉,采用了不冲不淤和冲淤平衡2种渠道设计思路。研究分析了在2种设计思路下渠道断面的设计流程,并举例分析了不同思路下断面的差异。结果表明,在不同的设计思路下,断面尺寸差异较大,对工程的投入影响较大。为了节约投资,建议在地势平缓地区采用不冲不淤的设计思路,在地势陡峭的地区采用冲淤平衡法进行断面设计。

In order to use surface water with large sediment concentration to irrigation in Qingyang City,the design idea adopted the two channels of no erosion and deposition, and fluvial equilibrium.The design process of channel section of two design ideas was analyzed, and the difference of cross-section under different thinking was analyzed.The results showed that under different design ideas ,the difference of cross-section size was large, which had a great impact on the project.It is recommended to adopt the design idea of no erosion and deposition in the flat area,and use the fluvial equilibrium method in the steep terrain to achieve the purpose of saving investment.