摘要
为提高天然河道河流流量在线监测精度,基于超声波时差法多层测流技术,提出并构建了双层虚拟垂线时差法流量计算模型,对江苏省秦淮新河水利枢纽泄洪期进行了计算,并与同期开展的走航ADCP流量比测结果进行对比分析。结果表明,该双层虚拟垂线时差法流量计算方法在一定程度上克服了由于天然河道水情条件复杂而导致率定期长的难题,河道流量测验精度高,计算的泄洪期河道流量与走航ADCP测量数据基本一致,相关系数为0.999,相对误差均在15%以内,在一定程度上能够满足洪水期河道流量测验精度要求。
To improve the accuracy of online monitoring of river flow,a double-layer virtual vertical flow method was proposed and constructed based on ultrasonic time difference method for multi-layer flow measurement technology,Using the navigation ADCP to carry out flow velocity comparison work at the Qinhuai new river water conservancy hub in Jiangsu Province.The results show that this double-layer virtual vertical flow method overcomes the problem of long flow rates caused by complex natural river conditions to a certain extent,and the efficiency of river flow measurement is high.The calculated results by this double-layer virtual vertical flow method and the navigation ADCP measurement are basical-ly consistent at flood discharge period,with the correlation coefficient 0.999 and the relative error within 15%.This method can meet the needs of river flow measurement.
作者
张利茹
王刚
贺永会
袁海英
马剑波
ZHANG Li-ru;WANG Gang;HE Yong-hui;YUAN Hai-ying;MA Jian-bo(Nanjing Research Institute of Hydrology and Water Conservation Automation,Ministry of Water Resources,Nanjing 210012,China;Research Center on Hydrology and Water Resources Monitoring,Ministry of Water Resources,Nanjing 210012,China;Nanjing Hydraulic Research Institute,Nanjing 210029,China;Bureau of Public Works of Shenzhen,Shenzhen 518071,China;Management Division of Qinhuai River Hydraulic Engineering of Jiangsu Province,Nanjing 210018,China)
出处
《水电能源科学》
北大核心
2024年第11期69-72,78,共5页
Water Resources and Power
基金
国家重点研发计划(2022YFC3204500,2022YFC3204501)
江苏省秦淮河水利工程管理处项目(YJHJ1523008)。
关键词
走航ADCP
传统时差法
流量模型
双层虚拟垂线时差法
流速
navigation ADCP
traditional time difference method
flow model
double-layer virtual vertical flow measurement
velocity
作者简介
张利茹(1981-),女,博士、高级工程师,研究方向为水文水资源,E-mail:zhangliru12@163.com。
