摘要
引航道口门区通航水流条件作为制约枢纽航运效益发挥的重要因素,受到泄水闸泄水方式、电站日调节方式、引航道尺寸等多方面的影响。基于SMS软件,对橄榄坝枢纽建立概化模型,提出流量分布不均匀系数K,推导并验证临界不均匀系数Kr的计算公式,分析下泄水流主流位于不同区域及不同主流强度时口门区最大回流流速变化规律。结果表明,当K≤K_r,主流远离船闸区域时产生的最大回流流速大于主流位于中间区域时产生的最大回流流速;当K>K_r,主流位于中间区域时产生的最大回流流速大于主流远离船闸区域时产生的最大回流流速。
Navigation flow conditions of entrance area are important tactors tor restricting the shipping benellt, which is affected by sluice gates＇ operation ways, power station regulation method, approach channel size and so on. Based on the SMS software, the mathematical model of Ganlanba project was established. Discharge uneven distribution coefficient K was defined. Then the formula of the critical discharge uneven distribution coefficient Kr was deduced. The variation of the maximum reflux flow rate was analyzed when the mainstream located in different areas with different intensity. The results show that when K is smaller than Kr, the maximum reflux flow rate in the mainstream away from the ship lock area is greater than that of center area and vice versa.
出处
《水电能源科学》
北大核心
2018年第2期128-131,共4页
Water Resources and Power
关键词
数值模拟
口门区
通航条件
泄流方式
numerical simulation
entrance area~ navigation conditions
operation mode
