摘要
考虑稳定性、准确性、泥沙含量和气温变化等因素综合作用对量测水设备可靠性的影响,建立量测水设备比测综合评价指标体系。在宁夏引黄灌区唐徕渠斗渠建立试验点,分别在夏秋灌和冬灌两个行水期对5类设备进行比测评价。结果表明:灌溉期泥沙对新安装量测水设备的精度影响不大,气温变化不足以影响设备精度;单纯基于超声波原理的设备不适宜在泥沙含量较大的渠道应用;基于电磁法和超声波原理的智能化明渠流量测量系统测流的准确性较高,但稳定性不足;非接触式明渠雷达流量计可靠性最优,其低水位时流量误差综合不确定度为8. 87%(受极端水位影响),中水位时为2. 87%,高水位时为4. 68%。研究可为引黄灌区不同流量级别渠道上量测水设备比测和选用提供借鉴。
Considering the influence of stability,accuracy,sediment concentration and temperature variation on the reliability of water measuring equipment,a comprehensive evaluation index system was established.A field test was performed in Tang Laiqu channel of the Yellow River irrigation district of Ningxia,which would be used to evaluate the five types of equipment in summer autumn irrigation and winter irrigation water period.The results showed that:the sediment of the irrigation period had little influence on the precision of the newly installed water measuring equipment,and the temperature change was not big enough to affect the precision of the equipment;the equipment based on ultrasonic principle was not suitable for the channel application with large sediment content;the accuracy of intelligent measurement system in open channel flow measurement system with electromagnetic method and ultrasonic principle was high,but the stability was insufficient;the non-contact open channel radar flow gauge had the best reliability,and the comprehensive uncertainty of the low water level reached 8.87%(affected by the extreme water level),the middle water level reached 2.87%,and the high water level reached 4.68%.The study can provide reference for the equipment comparison and selection in different flow level channels in the yellow irrigation area.
作者
王怀博
徐利岗
刘学军
苏笑曦
WANG Huaibo;XU Ligang;LIU Xuejun;SU Xiaoxi(The Scientific Research Institute of the Water Conservancy of Ningxia,Yinchuan 750021,China;Ningxia Hydrology Department Tang Laiqu Management Branch,,Yinchuan 750001,China')
出处
《水资源与水工程学报》
CSCD
2018年第6期250-255,共6页
Journal of Water Resources and Water Engineering
基金
国家重点研发计划项目(2016YFC04002)
宁夏回族自治区水利厅水利科技项目"宁夏引黄灌区测量水设备比测引选及测控一体化系统研究"
关键词
量测水设备
斗渠
比测试验
可靠性分析
综合评价指标体系
引黄灌区
water measure equipment
lateral canal
comparison measurement experiment
reliability analysis
comprehensive evaluation index system
Yellow River irrigation district
作者简介
王怀博(1988-),男,宁夏海原人,硕士,工程师,主要从事农田水利工程与水资源规划利用研究。
