数值计算方法在溢洪道阶梯消能的应用设计  

Application and Design of Numerical Calculation Method in Spillway Step Energy Dissipation

作　　者：陈嘉腾 Chen Jiateng(Environment Water Affairs Limited Company of Guanming District Shenzhen City,Shenzhen 518107,China)

机构地区：[1]深圳市光明区环境水务有限公司,广东深圳518107

出　　处：《黑龙江水利科技》2024年第5期83-87,共5页Heilongjiang Hydraulic Science and Technology

摘　　要：为研究白盆珠水库溢洪道台阶段体型参数设计方案,采用了数值计算方法,对台阶段阶梯布置长度展开了泄流消能分析。研究表明,阶梯布置长度不同,但溢洪道断面上流速、压强变化趋势仍为一致性;阶梯长度方案差异性,会改变溢洪道流速、压强量值水平,流速随布置长度为递减变化,但降幅集中在长度50~70m方案内,而压强随之为先增后减变化,长度80m方案下压强最高,同时该方案下前三级台阶流速等值线分布均匀,流态较佳。受阶梯布置长度参数影响,消力池内流速具有两种不同变化趋势,以长度80~110m方案下流速变化更能够泄流消能,且长度80~110m方案下消能率稳定在58.3%左右。结合溢洪道断面水力特性及消力池消能特征,阶梯布置长度80m方案最优。论文可为水库溢洪道阶梯式泄流消能设计提供参考。In order to study the design scheme of the stage shape parameters of the spillway in Baipenzhu Reservoir,the numerical calculation method is used to analyze the energy dissipation of the stage ladder layout length.The results show that the flow velocity and pressure on the spillway section are consistent with the length of the ladder arrangement.The difference of step length schemes will change the flow velocity and pressure value of the spillway,and the flow velocity decreases with the layout length,but the decrease is concentrated in the scheme with the length of 50~70m,and the pressure increases first and then decreases.The pressure is the highest under the scheme with the length of 80m,and the velocity contour lines of the first three steps under this scheme are evenly distributed and the flow pattern is better.Influenced by the length parameter of the step arrangement,the flow velocity in the stilling tank has two different variation trends.The flow velocity variation in the scheme with the length of 80~110m is more capable of discharging and energy dissipation,and the energy dissipation rate is stable at about 58.3%under the scheme with the length of 80~110m.Combined with the hydraulic characteristics of the spillway section and the energy dissipation characteristics of the stilling pool,the 80m step arrangement is the best scheme.The paper can provide reference for the cascade discharge energy dissipation design of reservoir spillway.

关 键 词：白盆珠水库 溢洪道 泄流消能 设计 

分 类 号：TV651.1[水利工程—水利水电工程]