北江濛里枢纽上游引航道通航水流条件试验研究  

Experimental research on navigation flow conditions in upper approach channel of Beijiang Mengli hydro-junction

作　　者：王云莉[1] 孙国栋[1] 李艳[1] 向美焘 吴成龙[2] 

机构地区：[1]重庆交通大学西南水运工程科学研究所,内河航道整治技术交通行业重点实验室,重庆400016 [2]青岛理工大学工程质量检测鉴定中心,山东青岛266033

出　　处：《水运工程》2016年第4期105-112,共8页Port & Waterway Engineering

基　　金：内河航道整治技术交通行业重点实验室开放基金项目(NHHD-201512)

摘　　要：濛里枢纽原有航道等级偏低,不满足目前货运增长的要求,因此需要对原有船闸进行扩建来提高航运能力,将在一线船闸右岸新建二线船闸。为保证一、二线船闸口门区有利于通航的良好水流条件,建立了整体定床物理模型,研究引航道导墙长度及布置形式对口门区及引航道内水流条件的影响。模型试验结果表明,在所有修改方案中,修改方案Ⅱ(一、二线船闸分开布置,二线船闸外导墙375 m,堤头段开孔)较好,其一线船闸上引航道通航条件基本不变,二线船闸口门区通航水流条件较好,较好地改善了上游口门区及连接段的斜流、回流等不利流态。The low waterway grade of Mengli hydro-junction is not able to meet the requirement of the current freight growth. So, it is necessary to build the second-line shiplock on the right bank of the first-line shiplock to increase the shipping capacity. The overall fixed-bed model is established to study the effect of the guide wall length and the layout form on the flow conditions in the entrance area and the approach channel. According to the model test results, the navigation flow conditions of the modified scheme II, with the separately arranged first and second-line shiplocks, the guide wall length of 375 m and the holes in the wall head, are best among all the modified schemes： the navigation conditions of second-line shiplock are improved while the ones of the first-line shiplock almost keep unchanged, and the unfavorable flow conditions in the entrance area and connecting section are improved.

关 键 词：二线船闸 上引航道 口门区 通航条件 

分 类 号：U612.1[交通运输工程—船舶及航道工程]