摘要
宜昌水文站传统流量整编方法要求实测流量多且有足够控制,但受多种因素影响,存在难以把握测验时机、定线控制不够、实测流量涨水面偏多以及测验河段上下游水量不平衡等问题。为提高宜昌水文站测验及整编精度,采用落差指数法、连实测流量过程线法(H-ADCP流量)、连实测流量过程线法(葛洲坝出库流量)与连时序法进行流量整编,比较分析了4种方法推算的径流量误差及原因,明确了宜昌站不同流量整编方法的适用情况。3种新方法与连时序法相比流量过程一致,流量特征值误差较小,可作为现有方法的补充。
The present discharge data compilation method demands lots of measured discharge data which can control the turn of discharge change process,but due to many influential factors,there are problems such as hard to find the good measurement time,most measurements are carried out in discharge rising periods,lack control of the stage-discharge relation determination,water imbalance of upstream and downstream measurement section and so on.In order to improve the measurement and data compilation accuracy,this paper employs four discharge data compilation methods to process the discharge data at Yichang Station,i.e,the fall index method,discharge hydrograph method with H-ADCP data,discharge hydrograph method with Gezhouba outflow data and chronological loop curve method,compares the results between four methods,analyzes the error cause and the applicable conditions of discharge data compilation methods to Yichang Hydrology Station.The comparison result shows that three new methods have the same discharge process and small characteristic discharge error with chronological loop curve method,which can be used as complementary methods and reduce the labor intensity.
作者
曾雅立
田苏茂
林涛涛
ZENG Yali;TIAN Sumao;LIN Taotao(Three Gorges Bureau of Hydrological and Water Resources Survey,Bureau of Hydrology,Changjiang Water Resources Commission,Yichang 443000,China)
出处
《水利水电快报》
2020年第6期19-24,共6页
Express Water Resources & Hydropower Information
关键词
流量整编
H-ADCP流量
落差指数法
连时序法
宜昌水文站
discharge data compilation
H-ADCP discharge
fall index method
chronological loop curve method
Yichang Hydrology Station
