摘要
针对长距离控制渠系的水力条件模拟冬季可能结冰范围问题,提出在寒潮条件下渠系的结冰范围主要受渠首来水温度和渠系沿程输水流量的影响,将结冰范围内的渠道根据出现流冰现象的时间划分为三个分区,并指出影响该区发生流冰的因素,进一步分析提出长距离控制渠系冬季输水的运行策略可最大程度满足沿线输水要求和安全形成冰盖的目的,为相应工程的冬季输水提供依据。
Based on the hydraulic conditions of long distance controlled canal system, this paper obtains the possible frozen area by simulating the water temperature changes. And it points out that the frozen area is controlled by headworks temperature and water delivery along the canal system under the given air temperature. Then the frozen area can be divided into three parts according to the frozen time. Finally, it proposes the winter operation strategy of long distance canal system, which can meet the requirements of water delivery along canal line in maximum extent and form the safety ice cover. Therefore, it provides reference for winter water diversion project.
出处
《水电能源科学》
北大核心
2011年第6期127-130,共4页
Water Resources and Power
基金
"十一五"国家科技支撑计划基金资助项目(2006BAD11B04)
国家863基金资助项目(2006AA100209-04)
国家自然科学基金资助项目(51009108)
关键词
长距离控制渠系
冬季
运行策略
结冰范围
下游常水位
long distance canal system
winter
operation strategy
frozen area
downstream constant water level
