长江航道疏浚与弃土处理构想

长江疏浚事业迅速发展的同时,疏浚污染物的防治和弃土利用作为一个崭新课题摆到了每一个同饮长江水的人们面前,特别是长江航道部门应将这一课题紧急列入遗失日程;解决疏浚弃土问题需要方法和体制的创新,如建立促进弃土利用的协调组织,不断改进疏浚工艺和装置,加大航道整治力度,杜绝非法采砂等。     

兼顾生态固滩与疏浚弃土生态化利用的生态航道建设技术

长江中下游航道治理中以软体排为主的护滩工程易造成滩面硬质化。为改善护滩工程区滩面生态环境,基于亲水植被的固土效应,结合新洲—九江河段航道整治二期工程,提出一种兼顾疏浚弃土利用与洲滩守护的生态航道建设技术。该技术利用疏浚弃土适当抬高洲滩滩面,并引入本土耐淹亲水植被,采用可降解、无污染的天然材料进行辅助固土防冲,确保先锋植被能够稳定发育至足够丰度,进而实现滩体稳定。     

内河航道疏浚治理施工中的生态影响及其对策分析

文章分析了内河航道疏浚施工如何影响生态环境以及影响的程度,其关键在于施工环节,疏浚导致悬浮物浓度过高、疏浚土污染扩散、弃土处理等带来不良影响。并结合具体内河航道疏浚治理施工项目就航道疏浚对生态环境的负面影响及其应对措施作简要阐述。希望对从事内河航道疏浚治理施工同行有参考价值和借鉴意义。     

基于生态保护的内河航道生态疏浚探讨

文中深入分析了内河航道疏浚对生态影响机理,包括航道疏浚中悬浮物浓度过高对生态的破坏、疏浚土污染扩散和疏浚弃土水、陆域处理三个方面。提出内河航道生态疏浚定义、内涵和关键问题。结合西江虎跳门航段疏浚工程以及上海苏州河整治工程,探讨实现内河航道生态疏浚的途径,包括施工过程控制,污染物控制,疏浚土处理与资源化利用。     

解析航道疏浚淤泥吹填区域地基处理方法

航道疏浚弃土受到国家生态可持续发展的相关政策的指导,将朝着循环利用的新方向进行发展,此前通常对航道疏浚弃土都是采取弃入大海的处理方式,而新政策提出了更高的环保要求,使得航道疏浚弃土趋向于上岸的新方式。这里就产生了对上岸的浮泥及流泥处理的新问题。文章基于实际的工程,由真空预压处理的相关内容出发分析和探讨航道疏浚弃土上岸之后浮泥流泥处理的相关方案,对其中的重难点进行针对性解决,总结经验为相关工程的开展提供参考。     

国内外河口航道治理经验及对长江口航道整治的启示

对国内外河口航道治理工程进行分析比较,认为：大河河口航道的治理难度大、周期长;拦门沙航道的治理是关键;不同河口水文泥沙特性千差万别,治理方案须因地制宜;在河口航道治理中,整治与疏浚相结合已成为普遍采用的手段,而且多数以整治为主;重视航道建设与河口综合治理相结合。对长江口航道整治的启示如下：长江口航道治理采取整治与疏浚相结合,多手段多方案研究制定合理方案,工程建设期间须加强现场观测和动态管理。实践表明：长江口航道整治难度极大,必须不断深化对河口水沙运动规律的认识,突破创新,才能取得成功。     

浅谈长江口南槽航道耙吸船抽砂转驳施工

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。     

北塘港航道演变及治理措施研究

通过对蓟运河口径流、潮流、泥沙特性及地形资料的分析,研究了北塘港航道的演变规律和趋势,提出了疏浚与整治相结合的航道治理措施。     

整治与疏浚相结合的航道治理特色

主要阐述长江口深水航道治理工程中整治建筑物与疏浚两种治理手段相结合的航道治理特色,一期、二期工程实施过程中两种治理手段不断动态优化联合实现营运目标水深的过程。     

长江宜宾—重庆航道浅滩整治措施分析

2003年以来长江宜宾—重庆段航道陆续按Ⅲ级航道标准进行了系统建设。建设过程中结合具体河势及碍航情况采取了单纯疏浚,顺坝与潜坝结合,疏浚配合丁坝、丁顺坝,疏浚、筑坝、护底配合等浅滩治理措施。结合实例对浅滩整治措施和效果进行分析。     

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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第34届海洋、离岸及极地工程国际会议(英文)

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;     

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.