摘要
阀门空化问题是高水头船闸设计中最为关键的技术难题。结合国内外船闸研究及运行经验,在阀门埋深相同的前提下,阀门段廊道体形是影响阀门段空化特性的主要因素,亟需进行不同廊道体形的非恒定流特性研究。依托实际工程,开展模型试验进行“底扩顶扩廊道体形+反弧门”与“平底顶渐扩廊道体形+反弧门”的对比研究,通过阀门廊道段动水载荷特性及阀门启闭力特性等各项指标的综合对比得出,前者更适合于高水头船闸,但该廊道形式工程量较大,体形复杂,施工要求较高,后期检修维护较困难。综合各种因素,犍为船闸选用“平底顶渐扩廊道体形+反弧门”方案。
Valve cavitation is the most important technical issue in the design of a high head ship lock.Domestic and foreign ship lock research and operation experience indicate that under the same buried depth of the valve,the shape of the corridor in the valve section is the main factor affecting the cavitation characteristics of the valve section,resulting in an urgent need to examine the unsteady flow characteristics under different corridor shapes.By investigating an actual project,this paper compares“the corridor shape of top and bottom expansion+the reversed tainter valve”and“the corridor shape of flat bottom and gradual top expansion+the reversed tainter valve”by a model test.A comprehensive comparison of various indicators,such as the hydro-dynamic load characteristics of the corridor in the valve section and the valve opening and closing force characteristics,shows that the former is more suitable for high head ship locks.Nevertheless,this corridor type has its own limitations,such as large engineering amount,complex shape,high construction requirements,and difficult maintenance.In view of various factors,the Qianwei ship lock adopts“the corridor shape of flat bottom and gradual top expansion+the reversed tainter valve”scheme.
作者
吴礼国
严秀俊
李泳龙
徐红
陈林
王敬鹏
WU Li-guo;YAN Xiu-jun;LI Yong-long;XU Hong;CHEN Lin;WANG Jing-peng(Sichuan Communication Surveying and Design Institute Co.,Ltd.,Chengdu 610017,China;Key Laboratory of Navigation Structures,Nanjing Hydraulic Research Institute,Nanjing 210029,China)
出处
《水运工程》
北大核心
2022年第9期80-85,共6页
Port & Waterway Engineering
基金
国家重点研发计划子课题项目(2016YFC0402006/04)
中央级公益性科研院所基本科研业务费专项资金项目(Y121009/Y122009)
中国博士后科学基金项目(2021M701752)。
关键词
高水头船闸
非恒定流常压试验
底扩顶扩
平底顶渐扩
high head ship lock
unsteady flow atmospheric pressure test
top and bottom expansion
flat bottom and gradual top expansion
