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1.
鲁琦 《水运工程》2020,(S1):141-146
潍坊港处于莱州湾的中部,岸滩水深较浅且变化平缓,泥沙运动较为活跃,泥沙淤积对航道的运营维护影响较大。通过建立潮流模型和泥沙输移数学模型进行计算,所得结果与现有的实测数据进行对比验证;再进一步模拟航道的冲淤情况,预测航道回淤分布规律以及航道沿程的淤强分布情况。结果表明,潮流模型和泥沙输移模型计算结果与实测数据吻合度均较高,预测航道年淤积量约为391.3万m3。  相似文献   

2.
李鹏  赵鹏  程瑾  王文博  李建 《水运工程》2018,(S1):43-48
针对东营港某港区在防波堤建设和航道疏浚施工同步进行的共同作用下的备淤深度问题,建立工程海域的潮流泥沙数学模型,对该模型进行了波浪、潮流、泥沙及地形冲淤验证。在数学模型的基础上,将施工过程分解为若干节点分别建模计算,并结合施工结束至竣工验收的不同时间分期叠加统计。得到同步施工期间航道的回淤规律并预测备淤深度。该研究为航道工程的顺利实施提供技术支持,也为解决此类问题提供参考。  相似文献   

3.
崖门出海航道疏浚工程潮流泥沙变化数值模拟   总被引:1,自引:1,他引:0  
崖门出海航道穿越黄茅海,是连接银洲湖和珠海高栏港的重要通道。采用数学模型在对最近的水文数据和地形冲淤资料验证的基础上,对崖门出海航道的进一步浚深方案进行了潮流泥沙运动模拟和航槽回淤计算。计算结果表明:东航道水沙条件相对较优,泥沙回淤主要集中在拦门沙航段,具有进一步提升通航标准的空间,在同等条件下可选择优先开发东航道。  相似文献   

4.
潍坊港西港区航道位于的小清河河口,泥沙淤积严重,制约潍坊港西港区的发展,需要修建5 000吨级航道。提出3个防沙堤平面布置方案,通过波浪、潮流、泥沙数模试验分析各方案的回淤量;然后从经济角度估算各方案的工程建设费用,计算各方案年度寿命周期成本,综合比选,确定最优方案为短堤方案。  相似文献   

5.
泥沙问题是连云港港北翼的赣榆港区和航道建设的关键问题之一。文中在进行自然条件分析的基础上,利用MOHID二、三维潮流泥沙数学模型对该港区实施后的潮流场及港池、航道泥沙回淤进行了计算模拟,对不同工况潮流流态、航道横流及对周围海区影响范围进行了分析,不仅给出不同工况下港池和航道的年回淤值,还对9711号台风作用下港池和航道的骤淤情况进行了计算预报。综合以上研究成果,提出推荐方案。  相似文献   

6.
随着日照港港口规模的不断扩大,部分港区和航道内出现泥沙淤积现象。针对这一现象开展研究工作,建立了日照港区二雏潮流数学模型并进行数学模型的验证,根据建立的水动力数学模型,研究各期工程日照港水域水流条件的变化并进行比较;根据历年港区水下地形测量资料.分析港区和外海航道的回淤情况,研究泥沙来源及回淤产生的原因;在缺少泥沙实测资料的情况下,参照邻近港口的风浪泥沙相关关系,推求日照港水域大风天含沙量关系,据此预测港区扩建后的泥沙回淤情况。  相似文献   

7.
李文丹  李孟国  肖辉  麦苗 《水道港口》2012,33(3):194-200
文章研究了台州港临海港区规划围垦后的有关潮流泥沙问题。首先对该海区的自然条件进行了分析,而后使用二维波浪潮流泥沙数学模型研究手段对台州港规划围垦后的二维潮流场、泥沙场、地形冲淤变化进行了模拟研究。研究结果表明,从周围水沙环境的影响考虑,该港区规划围垦的方案是可行的。  相似文献   

8.
陈纯  唐国兵  张春生 《水道港口》2013,34(3):199-203
文章对福建宁德漳湾作业区开发方案有关潮流泥沙问题进行了研究。研究收集并分析了工程附近水域的自然条件,掌握了工程水域水动力及泥沙运动特点和海床冲淤演变特征。在此基础上使用二维潮流泥沙数学模型对开发方案实施后的潮流场、泥沙场、地形冲淤变化进行了数值模拟研究。从潮流动力、地形冲淤以及纳潮量变化等方面分析了开发方案对周边海域水动力的影响。  相似文献   

9.
文章围绕厦门双鱼岛游艇码头工程方案有关潮流泥沙问题进行了研究。收集并分析了工程附近水域的自然条件,掌握了工程海域水动力及泥沙运动特点和海床冲淤演变特征,在此基础上使用二维潮流泥沙数学模型对开发方案实施后的潮流场、泥沙场、地形冲淤变化开展了数值模拟研究工作。从潮流动力、地形冲淤等方面分析了方案对周边海域水动力的影响。  相似文献   

10.
根据实测资料对温州港深水航道海区水沙环境进行分析,针对工程区岸线不规则、地形复杂、岛屿众多和滩槽交错等特点建立基于不规则三角形网格考虑波浪作用的潮流泥沙数学模型。在对模型进行充分验证的基础上,研究深水航道一期工程实施后的潮流泥沙运动规律,分析流场特征和航道内横流,预测航道内泥沙年回淤以及极端天气条件下发生骤淤的可能性。主要结论有:航道内水流流态平顺且横流不大;年淤强介于0. 0~0. 62 m/a,年淤积量为177. 3万m~3;极端天气条件下,底部泥沙以浮泥形式出现,航道内水流流态平顺且动力条件较强,浮泥难以在航道中长期存留,但应注意其短期碍航。  相似文献   

11.
正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field.  相似文献   

12.
Errata     
正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.  相似文献   

13.
14.
联合作战计划和执行系统   总被引:2,自引:1,他引:1  
全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划:时间不限的精密预案计划生成作战计划、方案计划或职能计划;时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础,加速应付危机的能力。  相似文献   

15.
Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.  相似文献   

16.
正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014.  相似文献   

17.
正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas.  相似文献   

18.
In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama?
The answer is China South Port Group (Hong Kong, Shenzhen and Guangzhou).  相似文献   

19.
Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.  相似文献   

20.
依据码头撞击受损区域调查检测结果,对受损构件提出合理的修复方案,为码头的安全运行提供保障。  相似文献   

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