蚌埠闸鱼道池室水力特性数值模拟  

Numerical simulation of hydraulic characteristics of fishway pools in Bengbu Sluice

作　　者：陈莹颖[1] 祝龙[1] 乔鑫位 王晓刚[1] CHEN Ying-ying;ZHU Long;QIAO Xin-wei;WANG Xiao-gang(Nanjing Hydraulic Research Institute,Key Laboratory of Navigation Structure Construction Technology,Ministry of Transport,Nanjing 210029,China;Anhui Survey and Design Institute of Water Resources and Hydropower Co.,Ltd.,Hefei 230088,China)

机构地区：[1]南京水利科学研究院,通航建筑物建设技术交通行业重点实验室,江苏南京210029 [2]安徽省水利水电勘测设计研究总院有限公司,安徽合肥230088

出　　处：《水运工程》2022年第5期78-83,90,共7页Port & Waterway Engineering

摘　　要：通过建立三维紊流数学模型,对隔板布置形式下的蚌埠闸鱼道池室水力特性进行计算,研究池室和休息池的水流流态、流速以及竖缝最大流速。特别针对典型池室和休息池上、中、下3个水层,20个横断面,920个测点。并对其中140个测点的横向、纵向和垂向流速进行了精细化分析。还研究了池室坡度对池室水力特性的影响。研究结果表明:1)鱼道池室和休息池上、中、下3个水层的流速、流态基本一致,水层越偏下主流流速相对越高;2)池室水流垂向流速很小,水流整体呈现二维特征;3)休息池主流流速与池室主流流速相当(平均值仅低3.5%),但低流速区面积显著增大(54%);4)池室坡度由1:100变缓至1:140,竖缝最大流速降低了16.9%;5)蚌埠闸鱼道池室坡度选为1:100~1:120可满足鱼类上溯需求。By establishing a three-dimensional turbulence mathematical model,the hydraulic characteristics of the fishway pool of Bengbu sluice with the baffle layout are calculated to study the flow pattern,velocity of the pool and the resting pool,and the maximum vertical slot velocity.In particular,the velocities of 920 measuring points in 20 cross sections of the upper,middle and lower water layers of the typical pool and resting pool are statistically analyzed,and the transverse,longitudinal and vertical velocities of 140 measuring points are finely analyzed.The influence of the slope of the pool on the hydraulic characteristics of the pool is also studied.The results show that:1)The velocity and flow pattern of the upper,middle and lower water layers in fishway pool and resting pool are basically the same.The lower the water layer is,the higher the main flow velocity is.2)The vertical velocity of flow in the pool is very small,and the flow presents two-dimensional characteristics.3)The main flow velocity of the resting pool is equivalent to that of the main flow velocity of the pool(only 3.5% lower on average),but the area of the low-velocity zone is significantly increased(54% higher).4)The slope of the pool slowed from 1:100 to 1:140,and the maximum velocity of vertical joint decreased by 16.9%.5)The slope of the fishway pool of Bengbu Sluice is recommended to be 1:100~1:120 to meet the demand of fish upward tracking.

关 键 词：蚌埠闸鱼道 垂直竖缝式鱼道 设计流速 水力特性 池室 休息池 

分 类 号：U641.1[交通运输工程—船舶及航道工程]