新中国成立以来的第一条运河,正式立项!

3月17日,经广西壮族自治区党委、政府同意,广西壮族自治区发展改革委批复了自治区交通运输厅上报的平陆运河项目建议书,平陆运河项目正式立项. 平陆运河是我国自京杭大运河后一千多年来的第一条运河,是新中国成立以来第一条运河,是广西各族人民期盼了100多年的运河,是融入共建"一带一路"、西部陆海新通道、交通强国、新时代西部大...     

平陆运河沿线土石方综合利用研究

对平陆运河工程开展土石方综合利用研究,以开挖土石方的数量、质地及时空分布等内容为切入点,结合运河周边区域的综合开发建设、土地整治、生态修复等活动,提出土石方资源有效利用途径,科学、合理地布局土石方综合利用点,提高土石方资源的利用率和综合效益,为平陆运河工程的顺利开展提供有力支撑。     

平陆运河建设对西南部地区货运出海格局的影响

平陆运河对外直接沟通北部湾港，对内直接连通珠江水系高等级航道，是一条通江达海的水运新通道，其建设将对西南部地区货运出海格局产生深远影响。全面分析西南部地区现状货运出海通道总体格局，结合平陆运河—北部湾港江海联运通道与东南向、东向出海通道及南向通道现有路径综合运输成本比较，提出平陆运河建设的影响将主要集中在广西、云南、贵州3省区，辐射影响川渝地区。平陆运河的建设将优化西南部地区出海货运方式，改变出海货运流向，提高西南部地区南向通道出海货运量比重，提升环北部湾港口群综合竞争力，为西南部地区提前围绕平陆运河建设完善物流体系提供决策参考。     

千年工程平陆运河建设背景下南宁市水运发展策略研究

平陆运河在全国而言都是千年工程,其建设将会对其起点城市广西首府南宁水运格局带来重大变化,并使广西北部湾港有了一条内河水运集疏运通道,给相对低迷的南宁市水运发展带来难得的历史机遇。本文基于对南宁水运发展现状和存在问题的分析,结合平陆运河建设给南宁市水运发展格局带来的巨大变化,提出了适合未来发展趋势的南宁市水运发展策略和建议。     

平陆运河航道等级论证

航道等级的确定是航道工程建设前须重点关注并解决的问题,常规项目主要考虑腹地水运发展现状及需求趋势并依据上位规划确定,但新开发的运河航道通常规划依据较少且缺乏理论分析支撑。考虑运河与天然河流具有明显不同的特点,基于运河衔接水系的通航条件,采用保证率分析法分析航道、通航建筑物及跨河桥梁对通航的限制影响。根据运输组织方式及大型船舶变吃水运输的经济性分析,综合考虑工程技术经济性、船舶大型化发展趋势、运输通达性等因素,得出运河推荐航道等级,为运河航道项目的开发建设提供参考。结果表明,平陆运河应采用I级航道标准建设,通航5 000吨级船舶。     

西部陆海新通道(平陆)运河前期工作稳步推进

西部陆海新通道(平陆)运河项目是《西部陆海新通道总体规划》和《水运"十四五"发展规划》的重点任务.2021年,项目在前期研究论证的基础上,正式启动了工程可行性研究工作. 平陆运河的建成,将直接沟通西江"黄金水道"和北部湾海港群,为广西、云南、贵州及广袤的西南、中南、西北地区新开辟一条便捷经济的出海通道,对促进西部大开发...     

基于综合立体交通网构建的平陆运河货运需求分析

平陆运河属于从无到有的内河水运新通道，传统的内河航道项目货运量预测方法难以适用。基于综合立体交通网构建的视角，对平陆运河在区域综合交通体系中的地位进行剖析，综合考虑转移和诱增需求，构建一套针对从无到有的内河水运新通道货运量预测方法体系，对平陆运河货运需求进行分析。预测2035、2050年平陆运河货运量分别为0.955亿、1.200亿t,主要来自北部湾港口群海铁联运、北部湾港海公联运、珠三角港口群—西江航运干线江海联运3条既有通道的运量转移；远期考虑平陆运河经济带及影响区内陆地市的开发诱增运量，预计2050年乐观情景下货运量有望达到1.5亿～1.8亿t。     

筹建广西平陆运河意义重大

广西正在筹划修建一条沟通西江航运干线与北部湾的平陆运河,完成这一宏伟工程,其意义重大,它将是广西内陆腹地水路出海最近的一条通道。     

平陆运河牛江河下底河入汇方案研究*

支流与干流的交汇区水流流态复杂,而人工开挖运河存在交角大、汇入流量大的特点,对航道通航影响显著,需对支流口实施河道治理工程。针对平陆运河中牛江河、下底河支流汇入运河后入汇河段的干流通航问题,进行入汇河段水流运动特性的研究。基于RNG k - ε紊流模型,采用三维数值模拟方法模拟不同设计工况下支流入汇情况,结果表明原设计方案不满足通航条件。因此,在设计方案基础上提出调整入汇方向、扩大入汇断面的优化措施,显著改善了通航水流条件,达到规范要求。研究成果可为类似工程提供借鉴。     

平陆运河工程施工控制网的建立

航道工程施工控制网是运河建设的重要课题。以平陆运河工程施工控制网的建立为例,根据枢纽建筑物施工放样的精度要求,确定平面控制网和高程控制网的等级。采用先进的测量仪器,快速完成控制网的外业数据采集,利用广西连续运行参考站(GXCORS)测量数据,集中统一处理全球导航卫星系统(GNSS)数据。高效率完成了施工控制网技术设计、外业数据采集、内业数据处理、精度分析、成果提供等全部生产过程。     

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。