基于水利枢纽工程底流消力池水力特性试验探究  

Experimental study on hydraulic characteristics of underset absorption basin based on water control project

作　　者：刘裕 Liu Yu(不详)

机构地区：[1]水利部新疆维吾尔自治区水利水电勘测设计研究院,新疆乌鲁木齐831100

出　　处：《吉林水利》2021年第2期5-8,20,共5页Jilin Water Resources

摘　　要：高水头泄洪建筑物具有较大的单宽流量,下泄水流的巨大能量将会对设施造成较大的破坏,为了能够有效地探寻出泄洪建筑物底流消力池的水力特性,根据实际工程建模分析的方式,对底流消力池不同的水流流态、水流速度、水流脉动压强进行对比,以探寻水利枢纽工程底流消力池的最佳构造方案。本次研究结果显示,底流消力池中水流速度与水流脉动压强和水流流量成正比关系;消力池增设跌坎后虽然能够降低水流流速,但将会增加水流对消力池底板的压强;通过抬升消力池后端底板高程形成二级消力池的方式可以显著优化水力的特性。The flood discharge structure with high head has a relatively large discharge per unit width,of which the energy of the discharge flow will cause great damage to the facilities.To effectively study the hydraulic characteristics of the underset absorption basin and the optimal construction scheme,based on actual engineering modelling analysis,the different flow patterns,flow velocity and flow pulsation pressure of the underset absorption basin are compared.The study results show that the flow velocity and pulsation pressure in the absorption basin are proportional to the flow rate,and although the addition of a drop ridge in the basin can reduce the flow rate,it will increase the pressure of the flow on the base of the absorption basin.By forming a secondary absorption basin through raising the elevation of the bottom plate at the back of the basin can significantly optimize the hydraulic characteristics.

关 键 词：水利枢纽工程 消力池 底流消能 水力特性 

分 类 号：TV61[水利工程—水利水电工程] TV653