摘要
为研究广西地区特小流域在不同下垫面条件下的设计洪水,笔者选择位于广西不同区域的5个特小流域作为研究对象,分别计算不同类型下垫面条件下的5个常用频率的设计洪峰流量和最大24 h洪量,分析下垫面对设计洪峰流量和最大24 h洪量的影响,总结出不同下垫面条件下设计洪峰流量和最大24 h洪量的变化规律,并对变化趋势进行了一定的量化。结果表明:对于同一个研究区域,下垫面的变化会对设计洪峰流量产生一定影响,对最大24 h洪量的影响相对较小。该研究成果对广西地区抽水蓄能电站、特小流域水利工程的洪水研究具有一定的参考价值。
In order to study the design flood of extra small watersheds under different underlying surface conditions in Guangxi five extra small watersheds located in different regions of Guangxi are selected as the research objects.The design flood peak flow and maximum 24-hour flood volume of five common frequencies under different types of underlying surface conditions are calculated respectively.The influence of underlying surface on the design flood peak flow and maximum 24-hour flood volume is analyzed.The variation law of design flood peak flow and maximum 24-hour flood volume under different underlying surface conditions is summarized and the change trend is quantified.The results show that for the same study area the change of underlying surface will have a certain impact on the design flood peak flow and the impact on the maximum 24-hourflood volume is relatively small.The research results have certain reference value for the flood research of pumped storage power stations and extra small watershed water conservancy projects in Guangxi.
作者
赵静薇
何培欣
曾彦欣
ZHAO Jingwei;HE Peixin;ZENG Yanxin(China Energy Engineering Group Guangxi Electric Power Design Institute Co.Ltd.Nanning 530007, China)
出处
《红水河》
2024年第2期6-11,共6页
Hongshui River
关键词
特小流域
下垫面
设计洪水
影响
extra small watershed
underlying surface
design flood
impact
