受回水影响的白龙江碧口(二)站流量测验误差分析

Error analysis of flow measurement at Bikou(Ⅱ)Station of Bailong River affected by backwater

人类活动对水文测验工作带来很大的挑战,尤其是水利工程的建设与运营,直接影响到水文测验数据的精度,为了更大程度提高水文测验数据的真实性,断面的迁移比测分析很有必要。本文在碧口(二)站实测流量的基础上,采用相对深0、0.2、0.6三种测法,对迁移后该站断面从垂线流速横向分布、纵向分布、流量相关性、流速相关性等多角度作了分析,计算了流量测验误差,最后确定出ADCP、中泓浮标、传统缆道流速仪测验换算系数,可为今后碧口站在水文测验、应急监测等方面提供参考依据。

Human activities have brought great challenges to hydrological survey,especially the construction and operation of water conservancy projects,which directly affect the accuracy of hydrological survey data.In order to improve the authenticity of hydrological survey data to a greater extent,the migration comparison analysis of section is very necessary.Based on the measured flow of Bikou(II)Station,three measurement methods of relative depth 0.0,0.2 and 0.6 are used to analyze the section of the station after migration from the aspects of vertical velocity lateral distribution,vertical velocity longitudinal distribution,flow correlation and velocity correlation.The flow measurement error is calculated,and the test conversion coefficients of ADCP,Zhonghong buoy and traditional cableway current meter are determined.It provides reference for the future hydrological test and emergency monitoring of Bikou Station.