新型局部阶梯式溢流堰水力特性试验  

Experimental on hydraulic characteristics of new type localized stepped overflow weir

作　　者：孙少华[1] 何妍 杨校礼[2] SUN Shaohua;HE Yan;YANG Xiaoli(Changsha Nonferrous Metallurgical Design and Research Institute Co.,Ltd.,Changsha 410007,China;College of Water Conservancy and Hydropower Engi neering,Hohai University,Nanjing 210098,China)

机构地区：[1]长沙有色冶金设计研究院有限公司,长沙410007 [2]河海大学水利水电学院,南京210098

出　　处：《有色金属(矿山部分)》2025年第2期148-154,共7页NONFERROUS METALS(Mining Section)

基　　金：国家自然科学基金资助项目(52179130)。

摘　　要：针对湖南省某尾矿库工程排洪与消能的特殊需求,设计了一种新型的侧向布置的局部阶梯式溢流堰。基于理论分析,对该新式堰的堰型特征展开研究,并通过物理模型试验研究其过流能力、水流流态、流速及时均压力分布等水力特性。研究结果表明,此新型局部阶梯式溢流堰能同时满足过流能力和消能要求,在进口侧设置导流墩、堰上采用收缩式布置可调整水流结构,并有效减免折冲水流及水翅等恶劣流态危害。该局部阶梯式溢流堰可为类似工程布置提供参考。Aiming at the special requirements of flood discharge and energy dissipation of a tailings reservoir project in Hunan province,a new type localized stepped overflow weir with lateral arrangement was designed.The characteristics of the new weir were analyzed based on theoretical analysis,and the hydraulic characteristics such as flow capacity,flow pattern,flow velocity and time-averaged pressure distribution were studied through physical model tests.The results showed that the new local stepped overflow weir could meet the requirements of overflow capacity and energy dissipation at the same time,and the diversion pier on the inlet side and the contraction arrangement on the weir could adjust the flow structure,and effectively reduced the damage of bad flow patterns such as scour flow and water wings.The local stepped overflow weir can provide reference for similar engineering layout.

关 键 词：局部阶梯式溢流堰 过流能力 水力特性 高堰 低堰 宽顶堰 实用堰 

分 类 号：TD926.4[矿业工程—选矿]