过流调控型渠道测流装置试验研究  

Study on Flow Controlled Channel Measurement Device

作　　者：王家琪[1] 吕宏兴[1] 周美林[1] 韩文霆 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]中国旱区节水农业研究院,陕西杨凌712100

出　　处：《灌溉排水学报》2015年第9期24-27,共4页Journal of Irrigation and Drainage

基　　金："十二五"国家科技支撑计划项目(2011BA29B08);教育部;国家外国专家局"111"计划项目(B12007)

摘　　要：基于薄壁堰测流原理,设计了过流式水位流量可调新型渠道测流装置,并通过试验拟合测流装置在6个不同仰角下自由出流时的流量计算公式,绘制不同仰角下流量与堰上水头的关系曲线。结果表明,流量与堰上水头具有良好的相关关系,流量计算最大相对误差为3.83%;流量相同情况下,仰角越小,堰上水头越大。该测流装置临界淹没度达0.90以上,可应用于替代渠道进水闸、节制闸,同时具备水位调控与流量量测功能。Based on the measurement principle of thin-plate weir flow,a new type of channel measurement device with adjustable stage-discharge was designed.Through the experiments,the free discharge theoretical calculation formulae of the flow measurement device were fitted under six different angles of elevation,and the relational curves of the flow and the weir head were drawn.The results showed that there was a good correlation between the flow and the weir head with maximum relative error 3.83%.At the same flow,the smaller the angle of elevation,the larger the weir head.The critical submergence degree of the device was more than 0.90.Equipped with water level control and flow measurement function,the device could be applied to replace channel intake gate and check gate.

关 键 词：量水堰 测流装置 流量关系 仰角 

分 类 号：S277[农业科学—农业水土工程]