漫湾水电站二期工程进水口漩涡问题研究  

Study on Vortices at Intake of Manwan Hydropower Station Ⅱ

作　　者：邓加林[1] 孙双科[2] 夏庆福[2] 

机构地区：[1]中国水电顾问集团公司昆明勘测设计研究院,云南昆明650051 [2]中国水利水电科学研究院,北京100038

出　　处：《云南水力发电》2006年第2期35-39,共5页Yunnan Water Power

摘　　要：漫湾水电站二期工程进水口运行条件与原设计条件相比有较大变化，二期工程装机容量由原设计的250MW增至300MW，引水发电流量由原设计的321m^3/s增至384m^3／s，并要求在小湾电站完建前投产发电。由于引水发电流量增大，而水库的汛限水位比后期发电控制水位低，已建进水口不能满足最小淹没度的要求。水工模型试验的结果表明。在上游水位985．0—986．0m范围内，两侧流道会出现第②漩涡，而将引水发电流量减小至360-300m^3/s，可避免出现漩涡；在高水位条件下则末见不利流态与有害漩涡出现。The working condition of the intake of the Manwan hydropower station Ⅱ changes a lot as compared with its original design. Its installed capacity is increased from 250MW to 300MW and its power discharge is inereased from the original 321m^3/s to 384m^3/s. It is scheduled to be put into operation prior to completion of the Xiaowan hydropower project. Because of the increasing of the power discharge and the lower operating water level the completed intake is unable to meet the requirement of min. submerged depth. The hydraulic test indicates that when the upstream water level is between 985.0 m and 986.0 m vortices would occur in both lateral flow channels, but when the power discharge is reduced to 360 m 300m^3/s no vortices occur, and neither unfavorable flow pattern nor harmful vortices occur when the water level is higher than 987.0 m.

关 键 词：漫湾水电站 二期工程 进水口 漩涡 最小淹没度 

分 类 号：TV131.39[水利工程—水力学及河流动力学]