应急过船设施泄流能力试验研究  

Empirical investigation on the discharge capacity of an emergency ship lock

作　　者：林燕萍 王威[1] 童中山[1] 刘宇轩 LIN Yanping;WANG Wei;TONG Zhongshan;LIU Yuxuan(The National Key Laboratory of Water Disaster Prevention,Nanjing Hydraulic Research Institute,Nanjing 210029,China;College of Water Conservancy&Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]南京水利科学研究院水灾害防御全国重点实验室,江苏南京210029 [2]河海大学水利水电学院,江苏南京210098

出　　处：《水利水运工程学报》2024年第2期119-124,共6页Hydro-Science and Engineering

摘　　要：应急过船设施是常山江梯级枢纽的水工建筑物之一,其功能定位为汛期参与泄洪,船闸检修等特殊时期参与航运。应急过船设施包含溢流堰、船闸上闸首、下闸首、输泄水系统等,体型复杂,国内外尚未专门对其水力特性开展相应研究。基于常山江应急过船设施,建立几何比尺为1∶30的单体物理模型,结合理论分析和模型试验研究,探讨了闸坎高度对应急过船设施泄流能力的影响,研究不同闸坎高度对其流量系数的影响,得到了应急过船设施综合流量系数计算式。结果表明,当上下游水位差较大,淹没度较小时,应急过船设施综合流量系数较大;随着淹没度增加,应急过船设施的泄流能力逐渐减小。给出的应急过船设施泄流能力综合流量系数计算式拟合精度较高,可为类似工程设计提供参考。The emergency ship lock,an integral hydraulic structure within the Changshanjiang hub series,serves crucial roles in flood discharge,lock maintenance,and specialized shipping operations.Despite its significance,both domestically and internationally,the hydraulic characteristics of the emergency ship lock remain understudied.This paper addresses this gap by first establishing a 1∶30 geometric ratio single physical model based on the emergency ship lock at a Changshanjiang shipping hub.Utilizing a combination of physical model test data and theoretical analysis,the study delves into the influencing factors and their respective degrees on the discharge capacity of the emergency ship lock.Additionally,the research explores the impact of varying gate heights on flow coefficients,culminating in the derivation of a recommended formula for the comprehensive flow coefficient of the emergency ship lock.The findings indicate that a significant upstream and downstream water level gap with minimal inundation results in a higher comprehensive flow coefficient,manifesting in a noticeable increase in flood discharge flow.However,as inundation severity rises,the incremental enhancement in the discharge capacity of the emergency ship lock gradually diminishes.The proposed formula for the comprehensive flow coefficient aligns closely with test values,showcasing minimal error.This formulation can serve as a valuable reference for the design of similar projects.

关 键 词：应急过船设施 理论分析 泄流能力 物理模型试验 

分 类 号：TV691[水利工程—水利水电工程]