摘要
根据重现期将洪水划分为12个等级,根据年最大流量距平值将洪水中长期定性预报分成7个等级,同时对嘉陵江流域干流洪水的洪峰流量等级标准和中长期预报定性分级标准进行了探讨,分析了嘉陵江干流1981年7月发生的洪水等级.结果表明,1981年7月在嘉陵江干流广元以下造成了4～6级的特大洪水.
Floods were classified into twelve grades according to the recurrence interval, and the medium-and long-term qualitative flood predictions were classified into seven grades according to the annual maximum discharge anomaly. Then, the standards for determination of the grade of peak discharges in the mainstream of the Jialing River and for qualitative classification in the medium-and long-term flood prediction were discussed. A flood grade analysis performed for the middle and lower Jialing River showed that there occurred catastrophic floods of 4—6 grades in July, 1998.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第5期515-518,共4页
Journal of Hohai University(Natural Sciences)
基金
西华师范大学基金资助项目(2003~2005年)
关键词
嘉陵江干流
洪水等级
重现期
中长期洪水预报
mainstream of the Jialing River
flood grade
recurrence interval
medium-and long-term flood prediction
