流速仪法流量监测方案分析与确定

流速仪法流量监测方案分析与确定

摘要：确定流量监测方案是规范水文测站正常开展流量测验的必要基础工作，亦是制定《测站任务书》中有关水文测验部分的主要技术条文。确定合理的流量监测方案，可保证单次流量测验精度，即保证单次流量测验误差不超过允许误差。本文采用崖口水文站1984年至2007年实测流量和实测水位测验成果资料，通过对多年径流量采用频率计算的方法，求得丰、平、枯水的相应典型年，进而求得典型年的相应水位。在此基础上，根据分析计算的宽深比和断面概化垂线流速分布形式参数，确定高、中、低水的流量监测方案。

关键词：典型年；宽深比；垂线流速分布形式参数；流量监测方案

Analysis and Determination of Flow Monitoring Scheme

by Velocity Instrument Method

LI Wei-hua

(Tangqin Hydrology and Water Resources Survey Bureau of

Hebei Province，Hebei，Tangshan 063000)

Abstract: Determination of flow monitoring scheme is the necessary basic work for the normal development of discharge measurement in hydrometric station specification and the main technical provisions for making survey station project description related to hydrologic part. Determining reasonable flow monitoring scheme can assure single time flow test precision.It can ensure that the single time flow test measurement error is no more than permissible error.This paper uses the method of frequency calculation runoff for ages, by dates of measured flow and measured water level test results in Yakou Hydrologic Station in 1984 to 2007 year. It obtains corresponding typical years, abundance、level and low water year, and then acquires corresponding water levels. On that basis we can ensure the flow monitoring scheme in tall、level and low water by breadth depth ratio and generalized vertical velocity distribution form parameters in sections.

Keywords: typical year; breadth depth ratio; vertical velocity distribution form parameters; flow monitoring scheme.

0引言

流量监测方案是指测站在日常水文测验中，依据高、中、低水分级控制次洪水流量过程的监测技术手段。采用流量监测方案测得的与某一水位级对应的瞬时流量，可消除因水位涨落变化急剧而导致的较大流量测验误差。因此对于我省山

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