首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
李涛 《珠江水运》2023,(4):55-57
2019年1月南槽航道治理一期工程开工实施,将通过实施整治建筑物控制河势,并疏浚建设6.0m水深航道,其后每年随淤随挖,长期实施维护疏浚。长江口2019-2021年航道维护A标工程中,在南槽6.0m基建疏浚开始之前仍由该工程的承建单位负责南槽航道5.5m的维护任务,为响应国家对资源保护、生态环境建设的高度要求,综合南槽区域环境、疏浚土源特性,鉴于南槽航道疏浚土泥沙特性满足航道整治建筑物筑堤袋装砂充填料的要求,因此,结合当前正在实施的南槽航道整治一期工程,长江口南槽航道维护过程中采取了新的施工工艺,通过耙吸船抽砂装驳,进行整治建筑物工程中袋装砂斜坡堤段的筑堤材料的充填使用。  相似文献   

2.
邓小宁 《珠江水运》2002,(12):28-29
目前,随着国家严禁对石料的开采以及对环保提出的要求,出现了土工织物袋充填筑堤替代抛筑堤的新工艺。在长江出海口,土工织物袋充填筑堤用于航道整治中已取得了成功的经验。土工织物袋充填……  相似文献   

3.
基于薄壁大圆筒结构在国内外沿海港口码头和防波堤工程中研究及应用现状,设计一种薄壁大圆筒结构坝。采用水槽试验的技术手段,研究大水深、大流速情况下坝体稳定性和抗倾临界条件,得到无充填、充填天然沙及带基座的充填薄壁大圆筒结构在水深34 m条件下抗倾流速分别为2.90、3.18及4.95 m/s,认为其能满足不同河流的航道整治建筑物稳定要求,可作为丁坝、顺坝、导流坝及潜坝等多种结构形式在内河航道整治工程中推广运用。  相似文献   

4.
为有效利用疏浚土并与港区陆域形成工程相结合,连云港港30万吨级航道一期工程中共建设了长约18 km的配套围堤,围堤结构为爆破挤淤堤与充填袋斜坡堤组合。因此在工程中势必要处理好爆破挤淤堤与充填袋斜坡堤两种不同结构的衔接。介绍在连云港港30万吨级航道一期工程中爆破挤淤堤与充填袋斜坡堤的衔接处理方案,以及结合衔接方案的龙口布置方案。  相似文献   

5.
针对航道整治工程BIM技术应用问题,研究航道整治工程全生命期的BIM技术路线、关键技术和应用内容。采用欧特克BIM平台和City Maker三维GIS平台,建立航道整治工程设计、施工、维护管理阶段的BIM技术路线和关键技术,并在黑沙洲航道整治二期工程和燕子窝航道整治工程中进行了示范应用。结果表明,该技术能够应用于长江航道整治工程全生命期,可为今后的航道整治工程BIM技术应用提供参考。  相似文献   

6.
赣江航道整治工程作为动态工程,在航道整治工作中受到多方面因素的影响,航道整治工程内的局部河段边界条件及河床泥面条件都在时刻发生改变。为了确保赣江航道整治工程的预期整治目标得以实现,务必及时根据航道实际现状调整航道整治方案及整治内容,在赣江航道整治过程中应用动态管理策略具有显著的必要性。本文结合赣江现状及动态管理内容,分析动态管理在赣江航道整治工程中应用的必要性,进而分析赣江航道整理工程中动态管理应用策略。  相似文献   

7.
随着广东省内河航道大规模航道整治工程的完成,有必要进行工程整治后水下地形测量验收工作,以检测整治工程是否达到设计的航行水深标准。本文结合东莞水道创建文明样板航道整治起步工程第三方抽测的实施过程,探讨内河航道整治竣工验收测量工作流程和方法。  相似文献   

8.
周家影 《中国水运》2014,(1):142-143
长江是我国的第一大江,流域内航道复杂多变,对其进行航道整治所面临的困难和不确定因素也纷繁复杂。为了提升长江航道整治工程的效率和质量,采用动态管理的模式对长江航道整治工程进行监管显得势在必行。基于上述背景,文中对长江航道整治工程动态管理的必要性和运作模式进行了深入的理论探讨,并结合实际案例,详细分析了动态管理在长江航道整治工程中的应用流程和效应。论文的研究成果以期为长江航道整治工程管理绩效的提升给出一些借鉴。  相似文献   

9.
河口区整治是航道整治工程的一个重点、难点问题,文章结合笔者的工作实践及工程实例,介绍了某出海航道整治工程河口区整治的思路、方法及整治效果,为以后类似航道整治工程的设计和优化提供参考。  相似文献   

10.
近年来国家投资建设了大量的航道整治工程,测绘工作作为航道整治工程实施的基础极其重要。把最新的技术运用到航道整治工程测绘工作不仅能提高工作效率,还能保证测绘成果的精度质量,也是未来航道整治工程测绘发展的趋势。本文总结了目前应用到航道整治工程测绘各方面的新技术,并分析了各种新技术的优势和不足,并对航道整治工程测绘技术未来的发展做出了预测。  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.
正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 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;  相似文献   

15.
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   

16.
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   

17.
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   

18.
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   

19.
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   

20.
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   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号