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一般公路水毁主要有路基坍塌、路基沉陷、防护与加固工程损坏、桥涵破坏等4种类型,本文详细阐述了各类水毁发生的原因以及探讨对各类水毁的防治措施. 相似文献
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针对公路桥梁在雨季常出现的病害,在调查分析的基础上,结合具体情况提出了预防性养护措施,以减少公路桥梁在雨季的水毁损失,延长其使用寿命。 相似文献
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惠州市白盆珠水库因强降雨等原因导致发生水毁,造成多处塌方,需要对其进行加固处理。文章结合工程实例,对惠州市白盆珠水库发生水毁的原因进行了总结,重点分析了水毁后加固处理的边坡施工方案,从而确保该水库水毁后修复重建项目的顺利实施。 相似文献
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水毁工程是指在自然灾害中,特别是与水有关的灾害中进行的一系列工程措施,旨在预防、减轻和修复灾害带来的损失。自古以来,人类就经历了无数次水灾带来的痛苦和破坏,因此对于水毁工程的研究和实践具有重要意义。随着气候变化和城市化程度的增加,水毁工程的必要性变得更加显著。本文旨在浅谈水毁工程的必要性,探讨其在灾害应对和恢复中的重要作用。 相似文献
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抛石丁坝是河道中应用十分广泛的整治建筑物,能够束水攻沙,保护岸滩免受水流冲刷,然而抛石丁坝水毁现象时常发生.针对这一现象,利用动床水槽物理模型试验对平原河流丁坝的水毁破坏进行了研究,分析丁坝水毁破坏的常见形式,认为坝头块石的坍塌流失是影响丁坝整体稳定性的主要因素,即抛石丁坝稳定性可基于坝头水毁来研究.在此基础上,定义了... 相似文献
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价值观是指人们对价值的性质标准、构成和评价的基本看法和态度,是指导人的行为的一系列基本准则和信条。构建海事核心价值观是时代发展的要求,更是海事自身发展的需要。 相似文献
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This chapter presents a summary of the findings of the workshop on ‘Analytical and Institutional Methods and Frameworks’. The paper discusses the nature of the analytical methods used in the papers presented and the purposes for which they were employed, which were generally to either assist in the planning and operation of public transport or to monitor the efficiency and effectiveness of transport services. Subsequent sections examine issues related to data collection and management, and the more general issue of institutional arrangements. Policy and research agendas needed to support further consideration of the subject are then identified. 相似文献
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介绍青藏高原多年冻土的冻融特性,并结合我局在青藏铁路十二标段的具体施工,分析了冻土的冻融特性及具体防止措施. 相似文献
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Geoffrey Wood 《Maritime Policy and Management》2004,31(2):157-171
This paper explores the current state of coastal and inland shipping in Tanzania. It provides an overview of the state of ports and shipping in Tanzania, and the reasons underlying the present crisis of competitiveness in terms of both global pressures and national and regional dynamics. Problems of competitiveness are at least partially due to under-investment, management failures, skills shortfalls and difficulties in interfacing with the railway network. Less easy to resolve structural problems include the great imbalance between imports and exports, heightened regional competition and ongoing political instability in the Great Lakes region. 相似文献
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风量与风压的简易测量及应用 总被引:2,自引:0,他引:2
锅炉正常燃烧必须有充足的风量,当锅炉鼓风或引风不足将导致锅炉效果恶化,锅炉出力、热效应率明显下降。结合工程实例,介绍结托管简揭测试鼓、引风系统各部分风压、风量,帮助判断分析工程实际问题的简便方法。 相似文献
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Elizabeth A. Wilman 《Coastal management》2013,41(3):211-230
As the controversy over Outer Continental Shelf (OCS) oil and gas leasing continues, with environmentalists and fishermen seeking to block or delay leasing decisions that they think will adversely affect their interests, the need for better estimates of the environmental costs associated with OCS development becomes increasingly apparent. Although high degrees of precision in such estimates may never be economic, let alone feasible, better knowledge would reduce the uncertainty surrounding the magnitude of such costs, and would make it easier to come to grips with the problem and reduce, if not resolve, the controversy. 相似文献