农田水利专利技术实践

Patent Technique of Farmland Water Conservancy

进水流道形状对泵站的效率及安全运行关系很大,中小型泵站应采用钟形流道,并且后壁采用渐开线形状。小型防渗渠道以及排水沟护坡宜采用混凝土预制构件,工厂化生产、质量可靠且施工速度快。淡水养殖场排灌设施是农田水利的新内容,采用塑料管道附件组合的"管阀"简单实用,可节约生产成本。

The shape of a water current canal has a great effect on the efficacy and safety of pump stations. Small and medium-sized pump stations should adopt clock-like canals and design form of the ＂step-by step expansion curves＂. Small canals and drain ditches had better adopt concrete precast elements. Quality is reliable and the construction period is brief. The irrigation and drainage facili- ties on cultivation farms are the new contents of farmland and water conservancy.