七星墩船闸输水系统布置及优化  

Layout and optimization of water conveyance system of Qixingdun ship lock

作　　者：杨嵚 YAN Qin(China Design Group Co.,Ltd.,Nanjing 210014,China)

机构地区：[1]华设设计集团股份有限公司,江苏南京210014

出　　处：《水运工程》2023年第12期145-150,共6页Port & Waterway Engineering

摘　　要：七星墩船闸是北江上延工程武江航道的重要节点工程,其有效尺度为190 m×23 m×4.5 m(长×宽×门槛水深),设计水头7.5 m。结合枢纽总体布置,按照规范要求,确定船闸采用闸墙长廊道侧支孔分散输水系统形式。输水系统模型试验表明,原设计方案的船闸输水系统存在泄水阀门后廊道压力偏低、进水口可见持续的吸气型漩涡、出水口附近局部壅高等不良水力现象。综合研究船闸整体及输水系统布置形式,并结合试验各项水力特性指标,提出将船闸泄水阀门段降低、进水口格栅布置优化、出水口处消力槛调整等优化措施。优化后的船闸输水系统各输水水力特性指标均达到预期目标和要求。Qixingdun ship lock is an important node project of Wujiang Channel of Beijiang upward extension project.Its effective scale is 190 m×23 m×4.5 m(length×wide×water depth of threshold),and its designed water head is 7.5 m.Combined with the general layout of the junction,according to the requirements of the code,the ship lock adopts the distributed water conveyance system with the side branch holes of the lock wall gallery.The model test of the water conveyance system shows that the water conveyance system of the ship lock in the original design scheme has some adverse hydraulic phenomena,such as the low pressure of the gallery behind the sluice valve,the continuous air-breathing vortex at the inlet,and the local high phenomenon near the outlet.Based on the comprehensive study of the layout of the whole ship lock and the water conveyance system,and combined with the hydraulic characteristics of the test,this paper proposes optimization measures such as lowering the sluice valve section of the ship lock,optimizing the layout of the inlet grid,and adjusting the baffle sill at the outlet.All the hydraulic characteristics of the optimized water conveyance system of the ship lock have reached the expected goals and requirements.

关 键 词：七星墩船闸 输水系统 布置形式 优化 

分 类 号：U641.2[交通运输工程—船舶及航道工程]