摘要
大型渠道水利用系数测试尚无有效方法,传统的静水法难以实施,动水法精度不足。为此提出一种适用于具有良好闸门控制条件的部分大型渠道的简易静水法,即利用渠道上的节制闸和下级渠的渠首闸拦蓄渠水,观测水位降落过程及渠段上各水闸漏失水量,然后根据水位降落过程以及在该过程中的漏失水量估算渠道水利用系数。在江苏省高邮市高邮灌区南关干渠上的实际测试表明,利用该方法可获得比流速仪法和ADCP法更可靠的测试结果。
At present,there is yet no effective way to measure water using efficiency of large-scale canals.Traditional hydrostatic method is difficult to implement in large-scale canals,while the precision of dynamic water method is too low.Therefore,a new simple hydrostatic method,which is suitable for large-scale canals with good gates control,is presented.In the method,water is impounded by controlling check gates and distribution gates in the canal,water using efficiency can be computed according to the process of water level fall and the leakage quantity of each gate.Actual measurement of water using efficiency is carried out in Nan Guan Main Canal of Gaoyou Irrigation District of Jiangsu Province.The result shows that the method is more reliable than current meter method and ADCP method.
出处
《节水灌溉》
北大核心
2010年第7期73-75,共3页
Water Saving Irrigation
基金
江苏省高校自然科学基金项目(06KJD570215)
关键词
大型渠道
渠道水利用系数
静水法
large-scale canals
water using efficiency of canal
hydrostatic method
