泄水闸开启方式对通航水流条件的影响
水利水电科技进展,2016,36(3)一Tel :025********一E-mail :jz @https://www.wendangku.net/doc/2812487477.html, 一http ://https://www.wendangku.net/doc/2812487477.html, 第36卷第3期Vol.36No.3水利水电科技进展Advances in Science and Technology of Water Resources 2016年5月May 2016基金项目:国家自然科学基金(51239001);湖南省教育厅科学研究项目(14C0024);湖南省研究生科研创新项目(CX2015B348)
作者简介:伍志元(1989 ),男,博士研究生,主要从事河流二海岸动力过程及其模拟技术研究三E-mail:wuzhiyuan89@https://www.wendangku.net/doc/2812487477.html,
通信作者:蒋昌波(1970 ),男,教授,主要从事河流二海岸动力过程及其模拟技术研究三E-mail:jcb36@https://www.wendangku.net/doc/2812487477.html, DOI:10.3880/j.issn.10067647.2016.03.015泄水闸开启方式对通航水流条件的影响
伍志元1,蒋昌波1,2,陈一杰1,2,邓一斌1,2,杨一武1
(1.长沙理工大学水利工程学院,湖南长沙一410004;2.水沙科学与水灾害防治湖南省重点实验室,湖南长沙一410004)摘要:为研究闸门开启方式对枢纽下游引航道口门区水流特征及通航水流条件的影响,以北江白石窑枢纽泄水闸为例,针对不同闸门开启方式对下游引航道口门区通航水流条件的影响开展三维数值模拟研究三结果表明:在较小流量情况下,闸门开启方式对下游引航道口门区通航水流条件影响较小;当流量较大时,闸门开启方式对下游引航道口门区通航水流条件影响较大三对于白石窑枢纽泄水闸,单开左岸泄水闸,或集中开启左岸泄水闸并间隔开启右岸泄水闸,下游引航道口门一线船闸航道右侧将不能满足通航水流条件要求三为保证船舶航行安全,建议该工程在下泄洪水时尽可能开启右岸泄水闸,或均匀开启全部泄水闸三
关键词:通航条件;三维数值模拟;泄水闸;口门区;白石窑枢纽
中图分类号:TV61一一一文献标志码:A一一一文章编号:10067647(2016)03007305
Influence of sluice gate opening mode on navigation flow condition //WU Zhiyuan 1,JIANG Changbo 1,2,CHEN Jie 1,2,DENG Bin 1,2,YANG Wu 1(1.School of Hydraulic Engineering ,Changsha University of Science &Technology ,Changsha 410004,China ;2.Key Laboratory of Water and Sediment Sciences &Flood Hazard Prevention of Hunan Province ,Changsha University of Science &Technology ,Changsha 410004,China )Abstract :The sluice gates of the Baishiyao Hydro-Junction in the Beijiang River were selected to study the influence of the sluice gate opening mode on flow features and navigation flow conditions in the entrance area of an approaching channel downstream of the hydro-junction.Three-dimensional (3D)numerical simulation was conducted on the influence of different sluice gate opening modes on the navigation flow conditions in the entrance area of the downstream approaching channel.The results show that the influence of sluice gate opening modes on the navigation conditions is small when the flow is low,and the influence of sluice gate opening modes on the navigation conditions is large when the flow is high.For the sluice gates of the Baishiyao Hydro-Junction,a single opening of the left sluice gate or intensive opening of the left sluice gate with opening at intervals of the right sluice gate will prevent the navigation flow conditions of the right side of the first-line ship lock from meeting the requirements in the entrance area of the downstream approaching channel.To ensure the safety of navigation,it is suggested that the right sluice gate of the Baishiyao Hydro-Junction be opened or else all the sluice gates be opened during flood drainage.Key words :navigation condition;3D numerical simulation;sluice gate;entrance area;Baishiyao Hydro-Junction
一一通航问题在水利枢纽建设中占有特别重要的地位,引航道是否通畅是枢纽建设成败的一个重要因
素[1],引航道口门区水流特征是水利枢纽工程进行平面布置规划论证及优化研究必须考虑的重要因
素三GBJ 50139 2004‘内河通航标准“[2]对水流在
引航道口门区3个方向上的流速都有相应规定,对Ⅰ~Ⅳ级船闸而言,口门区纵向流速不大于2.0m /s,横向流速不大于0.3m /s,回流流速不大于0.4m /s三
现阶段,枢纽引航道及其连接段的通航水流特征分
析大多采用物理模型试验进行,并据此论证平面布置方案[3-4]三诸多学者在这方面开展了大量工作,取得了能够满足工程实际需求的成果,为三峡枢纽[5]二青田枢纽[6]和湘江株洲枢纽[7]等工程的建设提供了科学依据三但开展物理模型试验需耗费大量人力二物力和财力,时间周期长,且受到比尺效应的影响,采用数值模拟方法开展相关研究是解决这些困扰的可行手段[8]三已有学者采用数值模拟方法对口门区水流特征进行探讨,但大多基于平面二维模型,计算得到的流速为水深平均流速[9-12]三口门区水流结构十分复杂,其三维特性显著;‘内河通航
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