摘要
沙市二郎矶站是长江中游干流重要控制水文站,水位-流量关系受洪水涨落、断面冲淤和回水顶托影响,较为复杂。采用沙市二郎矶站1997~2009年共13 a的水位、实测流量数据样本,结合落差辅助站水位资料,通过分析优选落差指数、落差系数等参数值,确定校正流量计算公式。采用综合落差指数法对沙市二郎矶站水位-流量关系进行单值化处理,结果表明,推流整编成果误差较小,满足国家有关规范要求,实施后可以大幅度精简流量测次。
Erlangji gauging station in Shashi City is one of the most important control stations in the middle Yangtze River.The water level-discharge relation influenced by fluctuations of flood,erosion and aggradations of cross-section and backwater is complex.Combining with water level data of auxiliary stations,we adopt 13-year hydrologic data including water level and measured discharge from 1997 to 2009.By analyzing optimized values of fall exponent and parameters,we determine computational formula for corrected discharge.The comprehensive fall exponent method is used for uniformization of water level-discharge relation.The results show that the processing error is small and meets the correlative standard and the discharge measurement can be significantly simplified.
出处
《人民长江》
北大核心
2010年第21期42-44,84,共4页
Yangtze River
关键词
水位流量关系
校正流量
单值化
综合落差指数法
water level-discharge relation
corrective discharge
uniformization
comprehensive fall exponent method
Erlangji station
