伶仃洋铜鼓海区海床演变分析及铜鼓航道淤积量计算

根据伶仃洋铜鼓海区的水流、泥沙实浊资料和水下地形图，以泥沙运动理论为基础，分析了铜鼓海区滩槽演变规律；从泥沙回淤的角度探讨开挖铜鼓航道的年淤积量和平均淤积强度，为估算铜鼓航道开挖后的泥沙淤积量提供了科学依据。     

东营港拟建航道沿线滩面沉积物特性及航道可挖性分析

通过对现场底质取样和试挖槽观测,对东营港拟建5～15万t级航道沿线滩面沉积物特性进行了研究,同时结合海域的水动力及泥沙环境分析,对东营港航道可挖性进行了探讨。研究结果表明-18 m等深线(10万t级码头)以内水域滩面泥沙以粉砂和砂质粉砂为主,d50为0.03⁰.04 mm,活动性强,发生骤淤的可能性大,不宜开挖航道;-18 m等深线以外海域滩面以粘土质粉砂为主,d50小于0.02 mm,泥沙活动性较差,开挖航道后出现大风骤淤的可能性较小。     

天津港外航道水动力条件及工程泥沙淤积研究

依据最新的水文、泥沙实测资料,利用风浪潮流泥沙数值模型对开挖深水航道泥沙淤积情况进行了计算。根据近年来现场实测水文、泥沙资料,结合本项研究工作进行了统计分析,为数模计算提供参数;建立了多重嵌套潮流数学模型,计算正常天气下工程实施前、后的海域潮流场分布情况;建立了海域风浪过程计算模型和泥沙运动模型,将波浪、潮流、泥沙模型耦合,计算了在年均含沙量的风浪条件作用下所造成的回淤情况,给出了航道建成后的年淤积分布情况。提出了天津港南、北防波堤延伸到16 0后的航道的淤强分布特征,从泥沙方面为航道的开挖提供了设计依据。     

伶仃洋泥沙淤积模型试验研究

介绍了潮流泥沙淤积模型的主要特点 ,研究了伶仃洋东西航道实施开挖工程前后的潮流和泥沙淤积变化情况 ,从一期工程实施的实际结果和其水流泥沙等因素综合分析得出 ,广州港开发 3 5万t级航道选择西线航道是正确的     

石浦港水动力泥沙问题研究

石浦港是一个具有五个口门的狭长港湾。作为一个港口,现有航道的通航能力明显不足,亟需升级现有航道至五万吨级航道以适应发展需要。另外,近年来石浦港大部存在泥沙淤积明显加重的趋势。本文通过地貌特征分析、遥感分析、现场实测水文泥沙资料分析、数学模型试验和物理模型试验对石浦港的潮流泥沙特征、泥沙淤积原因、石浦港航道开挖及下湾门炸礁通航等水动力泥沙问题进行了研究。研究结果表明:(1)石浦港是三门湾的外海通道之一,潮流是维持水道水深的主要动力;(2)石浦港及附近海域属于淤泥质海岸,含沙量较大;(3)五个口门中,三门和下湾门潮量较大,是主要口门;(4)从水动力泥沙角度考虑,石浦港五万吨级航道开挖及下湾门炸礁通航是可行的;(5)下洋涂围垦造成了石浦港潮动力减弱,是石浦港西、中部泥沙淤积加重的主要原因。     

港口总平面布置中考虑开挖航道港池对波浪的影响分析

开挖航道能对波浪起折射作用,港池航道开挖浚深能有效吸收波浪能量。结合开挖航道港池对波浪影响的研究及其它因素,分析确定工程总平面布置。实际营运结果表明,港口的营运使用、泥沙回淤、港内波浪问题都反映良好。充分验证了工程设计考虑因素的合理准确。     

淤泥质海岸航道建设期泥沙回淤特征监测研究

总结了淤泥质海岸航道建设期的泥沙回淤监测内容和常用的定性分析、定量计算方法以及成果校核验证方法等.以天津大沽沙5万吨级航道为例,给出了其建设期的泥沙回淤监测分析成果,主要包括泥沙回淤厚度和淤积量的计算及成果校核、回淤时空分布规律、开挖前后回淤泥沙的物质组成变化情况、淤泥层厚度及密度垂向分布状况现场监测等.     

天津港大沽沙航道施工期回淤研究

在淤泥质海岸开挖航道,其回淤的程度是能否建设成功的关键因素。为了研究天津港大沽沙航道施工期泥沙回淤特点和规律,在历年航道回淤监测资料的基础上,结合天津港主航道泥沙回淤研究成果,对大沽沙航道施工期回淤进行了系统的观测和研究,取得了大沽沙航道施工期各年的回淤量和回淤的平面分布、时间变化特点及航道回淤主要集中的部位。回淤情况基本与前期淤积预测结论一致,航道不会出现严重淤积情况的结论。     

通州湾港区一港池回淤对策

通州湾港区一港池建在辐射沙洲南缘腰沙高滩上,港池航道开挖后的回淤问题是工程设计关注的焦点.设计时通过研究工程海域潮流、波浪、泥沙、底质等自然特征,分析影响回淤的主要因素,从挡沙堤平面布置、备淤深度确定、维护疏浚、船舶吃水控制等方面提出一系列针对性措施.研究认为:通州湾港区一港池建在粉砂质浅滩上,港池航道开挖必会出现回淤...     

天津港15万吨级深水航道泥沙问题研究

天津港15万吨级深水航道二期工程将航道高程从-14.8m浚深至-17.4m,在航道底部遇到约2.6~3.0m的粉沙层。针对粉沙运动的特性,采用试挖槽观测、模型试验、示踪沙试验等方法进行了研究,并对航道开挖后的泥沙回淤进行了预测。     

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;     

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。     

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）.     

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.     

桥梁防撞设施物理模型试验

物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。     

印尼某电厂码头水工建筑物设计

印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。     

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.     

开放式数据挖掘系统模型

目前国内已经出现了少量的数据挖掘相关产品。国内数据挖掘软件无论从数量还是质量上比较，都与国外软件存在着较大的差距。随着数据仓库技术的普及，数据挖掘应用的需求越来越强烈，如何缩短这种差距，研发数据挖掘软件产品成为国内业界的一个重要问题。通过引用目前国际通用数据挖掘标准技术来构建开放式的数据挖掘系统模型，该系统模型从可扩展性、可重用性、易用性等方面得到了加强。