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杭州市全力打造以运河为中心的世界级旅游产品,运河水上黄金旅游线的开通对运河的通航管理带来了新的挑战,本文就如何加强对运河市区段通航安全的管理、服务地方经济建设,提出实质性的建议。 相似文献
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为提高江汉运河船舶的通航安全水平,从人工渠化运河的特殊性和人、船舶、环境和管理等4个方面分析得出影响江汉运河船舶通航风险的主要因素。运用系统动力学(Systems Dynamics)方法建立江汉运河通航风险管理模型,借助Vensim软件模拟江汉运河通航风险管理系统中各个因素间的相互作用关系,针对系统各个子系统中的部分人为可控变量及人为不可控变量提出有效的管理策略以达到抑制通航风险的目的。仿真结果表明,江汉运河船舶通航风险可通过调节船舶设备运行正常率、信息化水平、助航设施完备率、船员专业素养水平及交通密度等可控变量来降低。 相似文献
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本文通过大数据信息化技术手段,对京杭运河苏州城区段的智能监控系统进行分析与研究,实现对运河通航的一体化运行监测,水上交通的大数据关联分析,水运资源的管理与调度,统一信息数据管理和可视化智能监测,通过智能监控技术预防水上交通安全事故发生,确保京杭运河苏州城区段水上交通安全畅通。 相似文献
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6月18日至19日,交通部部长李盛霖在京杭运河两淮段航道、淮安船闸、连云港港、连云港海事局考察和调研期间,对江苏水运发展提出了要求。在苏北运河,李盛霖全面了解了两淮段航道整治情况和生态护坡建设情况,并听取了江苏省交通系统领导对苏北运河相关情况的汇报。随后,李盛霖走访了淮安船闸上游远调站,仔细询问了苏北运河航道“三改二”工程的有关情况,并提出在苏北运河推广“一个航次只进行一次 相似文献
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东济运河是京杭运河在山东省境内的一段 ,现已完全失去通航功能。随着《南水北调》东线工程的实施 ,为该运河恢复航运功能提供了机遇。就调水资源的综合开发利用、发展航运的必要性与通航工程的建设规模及建设方案等重大问题进行具体论述 相似文献
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介绍了我国港口资源的整合现状,指出港口整合可以提升港口的形象和地位,也为区域经济和城市的发展注入强大的动力。最后指出在港口资源整合中要避免的几个问题。 相似文献
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广州集装箱码头的轮胎式场桥小车制动器使用10多年后,出现了许多问题,故进行了改造.分析了轮胎式集装箱龙门起重机小车制动器的主要故障现象,提出了改造方案,并加以实施. 相似文献
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本文对现有的选定球面轴承的三种工程方法进行了分析比较.引入了“合力系数”,并给出了合力方向上投影面积的精确解. 相似文献
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分析柴油机故障中常见的机体裂纹故障原因,认为由于设计缺陷和管理及操作不当,易造成船舶柴油机缸体上的裂纹多发生在气缸套凸肩处。如不及时处理这些裂纹和故障,就会造成缸套的裂纹直至出现缸套漏水等严重后果,针对NANTAIQUEEN轮柴油机对该类型故障的检修提出具体措施。 相似文献
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The hydrophysical and hydrochemical structure of the Sea of Azov, with developed bottom anoxia, was studied during the RV “Akvanavt” cruise from July 31 to August 03, 2001. The anoxic zone with a thickness from 0.5 to 4 m above the bottom was found in all deep regions of the Sea. Concentrations of hydrochemical parameters were similar to the pronounced anoxic conditions (about 90 mmol m− 3 of hydrogen sulfide, 17 mmol m− 3 of ammonia, 6 mmol m− 3 of phosphate, 7 mmol m− 3 of total manganese). The hydrophysical structure was characterized by the uniform distribution of temperature in the upper 6–7 m mixed layer (UML). Below this a thin (0.4–0.8 m) thermocline layer was observed, just above the anoxic waters. Formation of this phenomenon was connected with that summer weather conditions. Intensive rains led to increased influx of river waters in June. That resulted in large input of allochtonous organic matter (OM) and inorganic nutrients; the latter were consumed on the additional autochthonous organic matter production. In July the weather was characterized by a significant rise in the daily averaged air temperature and large oscillations of temperature during the day. In this period a wind of constant direction was absent, but wind bursts were observed. The completed analyses showed that the formation of such a structure could be connected with the following factors: (i) positive growth trends of the daily averaged temperature and the daily oscillations of temperature, (ii) presence of wind bursts. The joint action of these factors resulted in the formation of the UML. The amplitude of wind bursts determined the depth of UML, and the value of trend determined the value of the temperature change in the thermocline. An initial presence of bottom halocline (caused by the Black Sea water influx to the bottom of the Sea of Azov) prevented the heating of the bottom layer and therefore led to an increase of vertical gradient of temperature in the thermocline. The spatial distribution of the turbulent exchange coefficient confirmed the existence of a “stagnation” area located above the anoxia zone, which is also, apparently, the reason for its occurrence. 相似文献
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