多线船闸下游极低通航水位通航水流条件试验研究  

Experimental study on navigable flow conditions of extremely low navigable water level downstream of multi-line ship locks

作　　者：蒋春钢 颜志庆 赵建钧[2] 辜晋德[2] 安建峰[2] JIANG Chun-gang;YAN Zhi-qing;ZHAO Jian-jun;GU Jin-de;AN Jian-feng(Guangxi Xijiang Group Honghua Second Line Shiplock Co.,Ltd.,Liuzhou 545000,China;Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]广西西江集团红花二线船闸有限公司,广西柳州545000 [2]南京水利科学研究院,江苏南京210029

出　　处：《水运工程》2021年第11期134-141,共8页Port & Waterway Engineering

摘　　要：红花多线船闸下游通航水位较低时,受河道地形影响,口门区出现大范围斜流和横流,严重威胁航运安全。采用1100整体水工模型及自航船模试验,根据低通航水位水流特点,提出并论证大区域疏深挖槽导流、降低碍航段沙洲高程、延长隔流堤长度与洼地回填制造隔流带等综合措施,有效降低了口门区纵、横向流速和回流流速。经验证,优化措施不仅可满足下游低水位的通航要求,还可以提高船闸的最大通航流量,提高船闸通航效率。船模试验结果表明,船舶操纵参数均在要求范围内。研究结果可供相关枢纽工程参考。Due to the influence of the river topography,large-scale oblique flow and cross flow,which threatens the safety of shipping seriously,will appear in the ship lock entrance area when the downstream navigable water level of Honghua multi-line ship lock is low.According to the results from the hydraulic model study of scale 1100 and self-propelled ship model test,we take comprehensive measures such as deepening trench diversion in large area,lowering sandbank elevation in obstructive sections,lengthening the separation levee length and making divider by backfilling according to the characteristics of flow pattern at the low navigable water level,by which the velocity of vertical flow,horizontal flow and backflow in the entrance area is reduced effectively.It is verified that the optimization measures not only meet the navigation requirements at the downstream low water level,but also effectively increase the maximum navigable flow and navigation efficiency of the ship lock.It is shown that the ship handling parameters are all within the required range by the test results of ship model.The research results can be used as reference for related pivotal projects.

关 键 词：最低通航水位 通航水流条件 口门区 多线船闸 自航船模 

分 类 号：U641[交通运输工程—船舶及航道工程]