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为推动我国内河航运的发展,综合分析当前航电枢纽的碍航问题,认为航电枢纽建设使通航河流断航,航电枢纽通航设施建设规模与航道建设标准不匹配,通航设施设计通过能力不足,航电枢纽建设期补偿机制与运输组织不尽合理,航电枢纽运营期水库调峰严重影响通航,航电枢纽运营等引起各种航道问题,并针对上述问题提出对策建议。 相似文献
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文章简要介绍了大源渡航电枢纽坝址选择,总图布置,建筑物结构设计,较好地体现了航电枢纽以航为主的开发思想。 相似文献
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基于湖南省湘江大源渡航电枢纽机电设备管理的经验,探讨水电、航电枢纽工程设备从设计、制造、安装到运行、维护实施全过程管理的意义及方法。 相似文献
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犍为航电枢纽位于岷江中下游流域,地处四川省腹地,周边人口稠密,具有悠久的历史。介绍犍为航电枢纽工程总体布置中如何考虑地形、地质条件以及枢纽建设对周边人文环境的影响,使各个不同功用的水工建筑物相互协调、充分发挥其承担的使用功能,形成独特工程。 相似文献
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船体尾部流场速度场的横向和垂向分量是导致粘性阻力增加的根本原因,为了获得最小总阻力船型,以船体尾部区域为优化设计对象,以YZ方向的二次流能量最小为目标函数,以样条函数的参数为设计变量,在保证排水量为基本约束条件下,根据实际情况附加其它约束条件来控制尾部形状的变化,采用非线性规划法进行优化设计。通过集装箱船的优化算例,证实了采用该方法进行船型阻力优化的可靠性。 相似文献
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分析船用燃气轮机涡轮盘榫槽拉削工艺中的拉床选定、轮槽拉的确定、拉夹具的维修等技术要点,实现涡轮轮盘榫槽的合理拉削加工,探讨解决涡轮轮盘榫槽加工的各种难题。 相似文献
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The topic of social inclusion is now maturing in the Thredbo conference series, being viewed as an important consideration in many aspects of land transport, the benefits extending beyond the socially excluded targeted population. The social inclusion workshop included presentations on new empirical evidence on the value of providing those at risk of social exclusion with mobility options, and how this links to improvements in personal wellbeing, often through mediating influences such as social capital. Work was presented on the role of transport services specifically targeted to those at risk of exclusion, particularly taxi services and school bus services, as well as how to modify fare structures to maximise inclusion in an efficient, mature transport system. The value of Universal Design principles to groups both at risk of being excluded as well as the current travelling public, was shown. The workshop affirmed the importance of including these wider benefits of inclusion in cost-benefit evaluations of transport. The issue of how best to move knowledge into strategic and operational policy, and the transferability of both knowledge and policy between different countries and settings, was discussed. This paper concludes with suggestions arising from the workshop in relation to policy and research, as well as recommendations for Thredbo 12. 相似文献