黄梨树水文站垂线平均流速与断面平均流速关系分析

Analysis of the Relationship Between Vertical Average Flow Velocity and Cross-sectional Average Flow Velocity at Huanglishu Hydrological Station

黄梨树水文站属于国家重要水文站,一类精度站,流量测验采用缆道流速仪法,单次流量测验历时0.75~3.17 h,较为费时。通过对黄梨树水文站2021年测速垂线平均流速与断面平均流速进行分析,选定代表垂线,建立相关关系,并对成果进行误差评定和验证。探索流量测验时断面平均流速简化为只测代表垂线平均流速,缩短测验历时。

Huanglishu Hydrological Station is a national important hydrological station and a Class I precision station.Its flow rate test adopts the cable current meter method,and a single flow rate test lasts from 0.75 to 3.17 hours,which is relatively time-consuming.This paper analyzes the vertical average flow velocity and crosssectional average flow velocity of the vertical line measured by Huanglishu Hydrological Station in 2021,selects representative vertical lines,establishes correlation,and evaluates and verifies the errors of the results.Exploring the average flow velocity of the cross-section during flow testing can be simplified to only measuring the representative vertical average flow velocity,thereby shortening the testing duration.