沉管碎石基床清淤新方法

结合现有的清淤设备和方法,利用漂浮式母船与水下清淤系统相结合的方式,根据沉管基床垄顶和垄沟回淤情况,采用环保疏浚中成熟应用的螺旋刀头将沉积淤泥扰动为泥水混合物,冲刷系统再次冲刷垄顶和垄沟残余淤泥扰动为泥水混合物。清淤泵提供动力,通过已成熟应用在港珠澳沉管碎石基床面的清淤系统吸头将泥水混合物吸走,实现基床垄顶和垄沟清淤,达到预期的清淤效果,实现对沉管基床的清淤施工。该方法可进一步为构筑物水下基床的清淤施工提供借鉴。     

绞吸船环保清淤技术在河道治理中的应用

中小河道的淤泥沉积问题比较常见,淤泥问题若长时间得不到处理,将直接影响河道的抗灾性能.通过开展河道清淤治理工作,能够有效提升河道自身的防洪灌溉能力.本文以一个清淤及底泥处置的工程为例,介绍了环保绞吸清淤船的清淤方法.该环保清淤工艺主要是定制并改换环保绞刀头、同型号绞吸式挖泥船串联施工等.该工艺在环保清淤工程中取得了良好...     

绞吸挖泥船环保清淤功能的研发*

针对绞吸挖泥船在清淤过程中挖深不足的问题和环保施工的要求，对绞吸挖泥船进行适应性改造，具体为将绞吸挖泥船前端绞刀挖掘设备更换为环保清淤设备，实现了绞吸挖泥船的环保清淤功能。为了增加清淤设备的灵活操作性能，开发了一种新型清淤设备，位于桥架和清淤吸头之间。针对水平悬挂、36 m挖深和40 m挖深3种工况，对清淤设备关键部件进行强度分析。结果表明，关键部件最大应力为84.2 MPa、最大变形为2.5 mm，满足强度和刚度要求，优化后关键部件符合施工要求。     

基于疏浚土资源化利用技术的入库航道清淤工艺

随着使用年限的增加，入库航道处淤积越来越严重，为提高灌溉供水能力、满足水质需要、增强纳洪防洪能力，需及时对入库航道进行清淤。由于入库航道清淤疏浚土不像河、海区域那样进行水运抛卸，需要转运上岸处理，因此疏浚土处理工艺繁杂、成本较大，且普遍存在堆存区有限、环境污染而无法满足工程清淤要求情况，影响航道清淤的正常推进。本文针对入库航道清淤疏浚土处理困难的问题，通过结合疏浚土资源利用技术、优化清淤工艺达到正常推进清淤施工的目的，该工艺既可推进入库航道清淤的正常实施，又可满足资源的合理化利用，因此，在入库航道清淤工程中可以广泛推广。     

“拼装式”绞吸船在内陆湖泊清淤的应用研究

由于内陆湖泊航运条件不佳,通常没有航道与外界相通,常规绞吸式挖泥船和耙吸式挖泥船无法直接通过航道进入,不便在清淤疏浚中使用,其他施工设备往往效率及安全性能不佳,因此需要选择合适船舶机械来解决内陆湖泊清淤问题。本文通过河南省某水库清淤扩容工程的实例,分析"拼装式"绞吸船施工情况,为需要清淤的内陆湖泊但又无合适清淤机械的类似工程提供借鉴。     

河湖污染底泥环保疏浚设计深度研究

生态清淤作为湖泊底泥污染治理的重要手段已取得共识,但清淤深度设计并无统一标准。针对此问题,以某工程为例,分析底泥受到的污染情况,对比常用的清淤计算方法包括沉积学法、背景值法、拐点法和分层释放速率法,提出污染过渡层清除程度综合系数K,改进了生态清淤深度设计方法。可以将该设计方法推广到整个工程区进行疏浚深度设计,既减少大规模实验室分析的工作量、降低工程研究费用,又便于应用在工程设计中。     

河流清淤治理工程施工方案与技术措施研究

河道清淤治理可以有效提高河道的防洪能力和灌溉能力,现代清淤治理工程施工还可以有效改善水质,解决污染问题。本文结合实际工程案例,针对河流清淤治理工程施工方案与技术措施展开研究,介绍了常见淤泥处理技术,以清淤疏浚工程为例,具体分析河流清淤治理工程施工方案与技术。     

城市中小河道清淤技术的应用

城市中小河道在城市发展和提升过程中发挥重要作用,河道清淤是恢复河道功能,改善河道生态环境的重要途径。本文以云南省昭通市某河道疏浚工程为切入点,阐述了河道清淤治理思路、施工方法、清淤方案、淤泥处理方案等方面的做法及经验,以期为类似河道清淤工程提供借鉴。     

水下清淤取样检测器具的研究与应用

基槽清淤质量目前尚无可直接采用的成熟检测方法，为解决这一难题，经过大量现场调研，结合本项目特点和以往的施工经验，研制了“封闭旋进取泥器”和“潜底定位取浆器”两项专利技术，并针对深圳机场扩建工程提出了可供实际操作的准确定量的基槽清淤检测方法，从而解决了这一工程难题。通过深圳机场扩建工程清淤质量的检测，证实该技术的可靠性，并可在类似的工程中推广应用。     

土工管袋脱水工艺在城市内湖生态清淤中的应用

以厦门市筼筜湖生态环境整治提升一期工程为例,针对中心城区清淤项目越来越普遍存在的问题症结,提出了进行生态处理淤泥的新思路,介绍升级版土工管袋脱水工艺在城市内湖生态清淤中的应用,简述该工艺经过前端的筛分、浓缩、中转最终再进行异地灌袋的主要施工方法,并从浓度控制、絮凝药剂配比、土工管袋参数及尾水排放方面描述了其控制要点,总结探讨了该工艺在实施过程中面临的主要问题及相关优化措施,可为后续类似工程提供参考。     

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.     

Journal of Marine Science and Application 2014 Sum. Contents

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33rd International Conference on Ocean,Offshore and Arctic Engineering （OMAE2014）

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.     

联合作战计划和执行系统

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。     

Recent progress on wave induced loading measurements in warships

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.     

The 11th International Conference on Hydrodynamics (ICHD 2014)

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.     

第十二届深水操作会议和展览会(英文)

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.     

Eastbound or westbound ?

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）.     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

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.     

某海港码头的撞损修复

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。