摘要
本文根据太浦闸自1991年开闸泄水以来积累的实测水文资料,利用《水闸设计规范》中的两个公式对太浦闸泄流量进行计算,与实测泄洪流量相比,公式一的计算值偏大许多,公式二的计算值往往偏小。文中应用三次多项式对由实测泄洪流量推得的堰流流量系数进行了拟合,得出了比较适合太浦闸运行情况下的堰流流量系数计算公式。
The water discharge capacity of Taipu gate has been studied using the measured hydrologic data accumulated since 1991 when it first operated. Compared with measured discharges, the discharge flows calculated by formula one （listed in ＂design specification of water gates＂） are over-predictions, while the calculated values by formula two are normally under-predictions. The main reason is that discharge coefficients of weir flow （m＇） derived from measured data using formula one are much less than the value of 0. 385, while compositive discharge coefficients （μ0） derived from measured data using formula two are normally higher than the values recommended in the design specification. Finally, one more suitable formula to compute the discharge coefficient of weir flow has been obtained through matching discharge coefficients of weir flow derived from measured data using a cubic polynomial.
出处
《南水北调与水利科技》
CAS
CSCD
2007年第4期72-75,共4页
South-to-North Water Transfers and Water Science & Technology
基金
国家自然科学基金项目资助(40306016)
国家自然科学基金国际合作项目资助(40511120171
40611120345)
水利部太湖流域管理局项目"太浦闸洪水风险图编制项目"
关键词
太浦闸
水闸设计规范
平底闸
泄流能力
堰流流量系数
Taipu gate
design specification of water gates
flat-bottomed water gate
water discharge capacity
discharge coefficient of weir flow
