包西高速铁路引入鄂尔多斯地区方案研究

包西高速铁路作为我国"八纵八横"高速铁路通道中重要的纵向通道之一,建成后呼包鄂城市群和关中平原城市群将实现有效连接。鄂尔多斯市为典型的"一城双核"城市,包西高速铁路的引入将对地区客运布局产生较大影响,根据鄂尔多斯地区城市及铁路现状、城市总体规划及交通规划,结合地区客运量及特点,提出地区内包西高速铁路引入方案及车站设置方案,确定合理的引入及客站布点,研究地区内高速铁路客站布局,结合地区客流特点,确定高速铁路车站分工;合理确定引入地区线、站位方案将有助于完善鄂尔多斯铁路枢纽的客运铁路布局,有助于完善鄂尔多斯地区高速铁路网络,提升呼包鄂城市群的辐射效应,促进城市建设和经济发展。     

High-speed rail and regional development: the case of intermediate stations

High-speed rail has developed both nationally and internationally in Europe as a successful alternative to both air and road over distances of 400–600 km. Inter-city traffic, especially between the major metropolitan areas in North-west Europe has benefitted greatly from the investment in this network. This paper explores two issues: the impact on the intermediate areas between these major metropolitan areas and the creation of potential cross-border inter-regional services. The evidence shows how both levels of service and potential economic impacts have been much less pronounced in these intermediate areas. Such areas have been affected both by a failure to see greatly improved direct access to major cities other than within their own countries and a lack of new cross-border inter-regional services. The paper argues that the creation of the high-speed rail TEN-T has not met the primary objectives of reducing regional disparities in accessibility or reducing the effect of national borders on regional integration. To achieve this requires not just infrastructure provision but an appropriate regulatory framework for service provision and accompanying measures at the local level.     

Optimizing station location and fleet composition for a high-speed rail line

This paper proposes a new strategic planning model for high-speed rail ventures. It is a mixed-integer optimization model that applies to a given line and focuses on two key strategic decisions: station location and fleet composition. Our purpose is to improve on previous station location models by including fleet composition decisions. In the new model, we additionally take into account in an approximate fashion the interrelationships between strategic and subsequent tactical decisions, regarding line planning, train scheduling and fleet assignment issues. The usefulness of the model is demonstrated for a case study involving a planned Lisbon-Oporto high-speed rail line.     

谈金安桥水电站左岸护岸边坡开挖的控制爆破

金安桥水电站左岸护岸边坡开挖爆破区环境复杂,紧挨将要拆除的下游围堰,在爆破时不能丝毫破坏其下游围堰。为了确保下游围堰、基坑抽水设备的安全,采用预裂爆破、孔间微差爆破、孔内微差爆破,选用较为合理的爆破参数控制爆破,顺利完成了左岸护岸边坡开挖爆破工作,为下游围堰的如期拆除创造了条件。     

岩滩水电站水文预报方案研究

文章介绍了红水河岩滩水电站水文预报的方案、内容及作业方法。     

基于粗糙主成分分析法的铁路网客运节点重要度决策

通过阐述铁路网客运节点的定义和节点重要度的概念,建立客运节点重要度评价指标体系,利用粗糙集理论与主成分分析法的结合,提出利用主成分分析法和基于信息量方法,计算客运节点的客观权重,结合主观权重得到科学合理的客运节点综合权重。经过实例分析,表明了基于粗糙主成分分析法的客运节点评判结果的有效性。     

鄂尔多斯铁路枢纽客运系统布局方案研究

为加强鄂尔多斯铁路枢纽建设,提高鄂尔多斯与外界联系通道的运输能力,完善铁路枢纽内客运系统布局,基于鄂尔多斯铁路枢纽现状分析,结合城市现状规划和枢纽客运预测,从铁路枢纽内线路走向、铁路枢纽内客运站布局、枢纽内高速铁路车站选址3个方面,对鄂尔多斯铁路枢纽客运系统布局方案进行研究。经综合比选分析,分别采用沿既有铁路通道的中线引入方案、高速铁路"两站"格局方案及新设东胜北站。在此基础上,提出鄂尔多斯铁路枢纽内客运站建设方案,不断提高鄂尔多斯与外界联系通道的运输能力。     

基于快铁融合的上海铁路集装箱快运站选址研究

快铁融合可以充分发挥快递企业和铁路运输的优势,有效提升物流作业效率,达到运输资源分配平衡的效果,是多元化运输的发展方向。在既有和计划建设的铁路货运站中选择铁路集装箱快运站与快递企业集散网络衔接,以快递企业时间满意度和集散运输成本为目标,构建基于时间满意度的铁路集装箱快运站选址模型,以上海铁路集装箱快运站为例进行实证分析,提出保证铁路集装箱快运站与快递企业合理衔接的对策,为铁路集装箱运输融入快递市场提供决策支持,加速快铁融合的实施。     

长瓦水电站橡胶坝设计及应用

文章简要介绍了橡胶坝的工程特点及适用范围,并结合广西河池市长瓦水电站橡胶坝工程,详细阐述了橡胶坝的设计要点、技术要点及实施效果,分析了橡胶坝的应用优势和造价优势,供类似工程借鉴。     

光电子技术发展态势分析

对2000-2005年度<维普数据库>收录的我国光电子技术领域的论文进行了统计与分析,从一个侧面探讨了我国光电子技术发展的现状与趋势.从中发现,我国光电子技术领域近年来在经历短暂的低迷后.近期呈现恢复性增长;激光及全息枝术是光电子技术研究中的重点;光电子技术理论发展迅速,为该领域的可持续发展奠定了坚实的基础;显示技术有待重视和加强.