使用氢气作为内陆水路燃料调查研究(英文)

Escalating apprehension about the harmful effects of widespread use of conventional fossil fuels in the marine field and in internal combustion engines in general, has led to a vast amount of efforts and the directing of large capital investment towards research and development of sustainable alternative energy sources. One of the most promising and abundant of these sources is hydrogen. Firstly, the use of current fossil fuels is discussed focusing on the emissions and economic sides to emphasize the need for a new, cleaner and renewable fuel with particular reference to hydrogen as a suitable possible alternative. Hydrogen properties, production and storage methods are then reviewed along with its suitability from the economical point of view. Finally, a cost analysis for the use of hydrogen in internal combustion engines is carried out to illustrate the benefits of its use as a replacement for diesel. The outcome of this cost analysis shows that 98% of the capital expenditure is consumed by the equipment, and 68.3% of the total cost of the equipment is spent on the solar photovoltaic cells. The hydrogen plant is classified as a large investment project because of its high initial cost which is about 1 billion US$; but this is justified because hydrogen is produced in a totally green way. When hydrogen is used as a fuel, no harmful emissions are obtained.     

生态护岸通水孔参数设计方法

针对生态护岸通水孔无统一设计标准的问题,进行了生态护岸通水孔参数设计方法的研究。以波能分布为切入点,推导了生态护岸通水孔后波高的计算公式,并对该公式进行工程应用的简化。提出生态护岸通水孔参数的设计方法,并进行工程算例验证。结果表明,简化计算可以满足工程应用的精度需要,可为类似工程中通水孔的设计提供思路。     

山区河流滩险航道整治的有效资源利用

根据山区河流滩险航道整治的实践经验,在归纳认识的基础上提出了有效资源的利用问题,将其划分为外部和内部两种资源,结合实例对其应用进行了阐释。     

澜沧江景洪大沙坝采砂方案平面二维水流数学模型研究

在分析景洪水道基本特征的基础上,结合定床模型试验提出的采砂方案,采用平面二维水流数学模型进行了水面线和流场分析计算,研究景洪水道采砂后通航条件的变化,结果表明采砂方案实施后该河段通航条件能基本满足通航要求。     

单点锚泊船锚链线水平摄动分析

为研究单点锚泊船在外力作用下的低频运动锚链线的恢复性能的问题,利用锚链线的静力特性推导出锚泊线方程,考虑水深、水平位移、单位锚链重与水平作用的关系,同时通过水平作用力与顶端水平位移进行参数摄动分析,以偏微分的方法推导了锚泊线恢复性能系数方程,并结合水平力参数摄动法分析锚泊线的恢复作用性能。计算结果验证了恢复系数具有明显的非线性,所得恢复性能方程及摄动分析结论对工程实践及锚泊(防走锚)预警系统的理论研究具有一定的参考意义。     

非优良建桥河段通航论证

通过总结已建桥梁对通航的影响,对跨河桥梁建设的现状进行了分析,提出了影响桥区安全通航的主要因素。其中最重要的是水流情况,其次是风、水深和航道宽度及通航孔净宽。将研究结论应用于松陶铁路第二松花江特大桥的通航论证工作中,对该桥的结构、航线选择进行了论证优化,为桥梁建设提供了合理建议。     

软体排在长江航道整治工程中的应用

介绍土工织物软体排在长江航道整治工程中的应用情况及施工方法,总结其控制要点,分析其使用效果并阐明其优点与不足。     

船闸口门外连接段通航水流条件标准的初探

本文对船闸门口区与内河航道的通航水流条件标准做了回顾,分析计算了连接段顶推船队推力与阻力的对应关系,收集了有关枢纽工程的通航水流条件,为制定连接段的通航水流条件限值提供依据。     

剩余法在水运建设项目围海造地工程财务评价中的应用

剩余法在房地产开发项目财务评价中应用较为普遍,本文将其引用到水运建设项目围海造地工程的财务评价中,结合某围海造地工程实例,说明该评价方法的可行性,可以做为水运建设项目中围海造地工程财务评价的一种参考方法。     

The use of hydrogen as a fuel for inland waterway units

Escalating apprehension about the harmful effects of widespread use of conventional fossil fuels in the marine field and in internal combustion engines in general, has led to a vast amount of efforts and the directing of large capital investment towards research and development of sustainable alternative energy sources. One of the most promising and abundant of these sources is hydrogen. Firstly, the use of current fossil fuels is. discussed focusing on the emissions and economic sides to emphasize the need for a new, cleaner and renewable fuel with particular reference to hydrogen as a suitable possible alternative. Hydrogen properties, production and storage methods are then reviewed along with its suitability from the economical point of view. Finally, a cost analysis for the use of hydrogen in internal combustion engines is carried out to illustrate the benefits of its use as a replacement for diesel. The outcome of this cost analysis shows that 98% of the capital expenditure is consumed by the equipment, and 68.3% of the total cost of the equipment is spent on the solar photovoltaic cells. The hydrogen plant is classified as a large investment project because of its high initial cost which is about 1 billion US$; but this is justified because hydrogen is produced in a totally green way. When hydrogen is used as a fuel, no harmful emissions are obtained.