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随着 U 形混凝土衬砌渠道的普遍推广应用,原来适用于梯形渠道断面的巴歇尔量水槽、矩形无喉量水槽等,由于与 U 形渠道衔接不顺、工程量大、易淤积、量水精度也受到影响,已不适用。灌溉管理部门迫切要求研究适用于 U 形渠道断面的量水建筑物,以满足计划用水,节约用水,按用水量计征水费的需要。在水利部和陕西省水利水保厅的重视支持下,陕西省水利科学研究所在调查研究,分析比较现有量水建筑物应用情况的基础上,对 U 形长喉道量水槽进行了试验研究,1985～1987年首先进行了系统的室内模型试验,接着于1988～1989年又先后在宝鸡峡灌区杏林管理站和洛西灌区陈庄管理站的积极
With the general popularization and application of U-shaped concrete lining channels, the original applicable to the trapezoidal channel cross-section of the Parshall flume, rectangular throat and other non-throat, as U-shaped channel convergence is not smooth, large amount of engineering, sedimentation, Accuracy is also affected, it does not apply. Irrigation authorities are urgently required to study the quantity of water structures applicable to the U-shaped channel sections in order to meet the needs of planned water use, water conservation and water use fee collection. Under the support of the Ministry of Water Resources and Shaanxi Provincial Water Conservancy and Water Conservation Office, Shaanxi Institute of Water Resources and Hydropower Research conducted a test on the U-shaped long throat flume based on the survey and analysis and comparison of the application of existing water structures. Study, from 1985 to 1987 first conducted a systematic indoor model test, then in 1988 and 1989 and successively in Baoji Gorge Xinglin Management Station and 洛西 Irrigation District Chenzhuang management station