时差法流量监测系统的建立与实践应用分析

Analysis on establishment and practical application of flow monitoring system with time difference method

针对传统流量测验作业模式存在现场测验时间长、劳动强度大、不能实时监测且低流速时测量不精确等问题,屯溪水文站引进时差法流量监测系统进行水文作业。本文从时差法流量监测系统的系统结构、工作原理、安装建立、实践应用、系数率定等方面进行研究分析。结果表明:时差法按流速级分析,在1.4m/s流速以下具有较好的相关性,水文测流是准确可行的。

Tunxi Hydrological Station introduces time difference method for hydrological operation in traffic monitoring system in view of problems of traditional traffic measurement and test operation mode,namely long scene test time,high labor intensity,incapable real-time monitoring,inaccurate measurement at low flow velocity,etc. The following aspects are studied and analyzed in the paper： system structure, working principle, installation and establishment, practical application,coefficient calibration,etc. of time difference method flow monitoring system. Results show that time different method is used for analysis according to flow velocity grade. It has better correlation under flow velocity of 1. 4 m/s.Hydrological flow measurement is accurate and feasible.