双层多股水平射流新型消能工安全运行方式研究  

Research on the Safe Operation Mode of a New Type Energy Dissipator with Double-layer Multi-outlet Horizontal Jets

作　　者：张苾萃 潘江洋 曾少岳 苗宝广 张永涛 戴晓兵 顾莉 ZHANG Bicui;PAN Jiangyang;ZENG Shaoyue;MIAO Baoguang;ZHANG Yongtao;DAI Xiaobing;GU Li(PowerChina Zhongnan Engineering Corporation Limited,Changsha 410014,Hunan,China)

机构地区：[1]中国电建集团中南勘测设计研究院有限公司,湖南长沙410014

出　　处：《水力发电》2020年第12期56-59,共4页Water Power

基　　金：国家重点研发计划资助项目(2016YFC0401904)。

摘　　要：依托向家坝水电站,通过1∶100水工整体模型试验,对双层多股水平射流新型消能工不同闸门开启方式下的水力特性和闸门调度方式进行研究,并结合减小振动要求,对闸门运行方式进行优化研究。成果显示,双层多股水平射流消能工,闸门开启方式多样,平面流态复杂,单层单独运行多数开启方式消力池均存在流态不稳定的水位区间,对闸门调度要求高。闸门对称均匀开启,优先启用表孔泄流,小流量、多孔口、中孔与表孔联合泄流,中孔和表孔均衡泄流以及双池均衡泄流,不仅可确保泄洪安全,还可控制泄洪引发的场地振动。Based on Xiangjiaba Hydropower Station,the hydraulic characteristics and gate scheduling mode of the new type energy dissipator with double-layer multi-outlet horizontal jets under different gate operation modes are studied through the 1∶100 hydraulic model tests,and combined with the requirements of reducing site vibration,the gate operation mode is also optimized.The results show that the energy dissipator with double-layer multi-outlet horizontal jets has various gate operation modes and complex plane flow pattern,and there is an unstable water level range in the stilling basin under most of single-layer and separate operation modes,which has higher requirements on gate scheduling.The research indicates that,when the gates are symmetrically and uniformly opened,the surface orifice discharge is preferentially used,and the joint discharge of the middle orifices and the surface orifices is adopted with small flow,multiple outlets,balanced discharge of two kinds of orifices and balanced discharge of two stilling basins,which can not only ensure the safety of flood discharge,but also reduce the site vibration caused by flood discharge.

关 键 词：双层多股水平射流 安全运行方式 流态 场地振动 高低跌坎式消力池 

分 类 号：TV653[水利工程—水利水电工程]