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通过湟源县对农村公路的养护和管理工作实践,阐述了道路的使用只有同科学的管理与及时、专业地养护相结合,才能获得良好的效果和理论,并提出了相应的措施。 相似文献
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沥青路面中修罩面是一项养护工程,由于各地重视程度不同,工程质量差别较大,导致一些路段前修后坏.通过实践和理论相结合的方法,论述了如何做好沥青路面的中修罩面工程. 相似文献
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随着国民经济的发展,公路建设事业的进步,人们对公路养护提出了更高的要求,农村公路养护不断遇到新的难题,面对困难和挑战.结合本地区公路养护实际工作实践,针对长期困扰公路养护的难题进行了分析总结和探讨. 相似文献
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为了加强公路工程施工技术管理及养护措施的研究和实践,阐述公路工程施工技术管理及养护的概念,分析公路工程施工技术管理及养护中存在的问题、管理及养护的意义,提出公路工程施工技术管理及养护的措施,为提升养护的效果提供参考。 相似文献
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为提高高速公路养护的环保效益,从路况评价、使用性能预测、合理划分养护路段、养护效果评价等方面分析高速公路养护要点;从材料、设备、养护计划、生态修复等方面分析高速公路养护节能减排路径;从优化路面养护材料与技术方面分析高速公路养护技术在节能减排方面的应用实践,以期为高速公路养护提供参考。 相似文献
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公路运输作为我国主要的运输方式,促进了社会经济迅速发展和提升人们出行幸福感。公路养护不仅保障了公路通畅,也能有效延长公路的使用寿命。其中预防性养护作为一种"补小洞"的养护方式,具有明显的经济效益、交通效益和路面性能效益。本文介绍了公路预防性养护的定义,较详细地总结了预防性养护面临的三大问题,并提出了提高预防性养护效果的策略,以期为公路养护事业理论研究发展做出一番贡献。 相似文献
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Shiliang Liu Li Deng Qinghe Zhao Stephen Daniel DeGloria Shikui Dong 《Transportation Research Part D: Transport and Environment》2011,16(8):591-594
The paper presents the results of a case study carried out in Xishuangbanna, Southwest China, to examine the relationship between vegetation dynamics and road network extension. We find that lower level roads had more effects on vegetation patches. Minor roads, including Class IV and Class V roads, contributed most to regional landscape fragmentation while high level roads had larger effect on vegetation dynamics in road effect zone. Further, road classes have close relationships with village distribution, topography fluctuation and landscape fragmentation. Topography, however had no direct relationship with vegetation pattern. 相似文献
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本文以中国一带一路重点项目西藏自治区国道109线那曲至拉萨公路改建工程为依托,研究了高原冻土地区公路施工中的环境保护与水土保持技术。根据设计资料、施工现场调查和主要施工方法,总结出10项环境保护与水土保持的重要因素;在可持续发展理念和绿色生态理念的公路施工背景下,针对高原冻土地区的植被保护与恢复问题,在施工场地及临建、取土场、弃土场以及路基边坡采用了原有植被草皮表土回填法;针对泥浆、污水、噪声、扬尘排放等引起的水环境、声环境及空气环境保护问题,制定了有效的防护措施,并取得显著效果。 相似文献
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厚层基材植被护坡是一种值得推广的高速公路上边坡防护绿化形式。文章结合浙江省诸永高速公路挖方路堑边坡防护绿化工程,介绍了厚层基材植被护坡施工方法,为高速公路边坡防护提供参考。 相似文献
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Charles Musselwhite 《运输规划与技术》2015,38(1):44-61
Traditionally, theory suggests the ageing individual is strongly influenced by the environment and has difficulties in overcoming distance and space. Recently, however, theory has moved to suggest that older people possess greater agency, being more capable of selecting and mastering their environments and spaces according to their needs and preferences. This paper suggests that both opposing theories are correct for differing groups. Observations and surveys of older people (n = 365) in public space examined how far person–environment agency is present in active use of outdoor space, measured by confidence to use and explore space, in three locations (urban shopping centres, suburban residential area and an area of shared space). In all three areas, dominance of the space was associated with being male and having higher levels of reported health, confidence and higher socio-economic status. Only 11% of participants walked at least as fast as the UK department for transport guidance on crossing speeds. 相似文献
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《国道线阳朔月亮山至桂林段公路生态恢复和景观建设技术》项目组 《西部交通科技》2006,(3):17-19
文章结合全桂路、桂阳路基本概况和景观特点,对现有主要植被生态学和生物学特性进行分析,采用融合设计的思想,建立了旅游区的公路景观与环境融合的规划设计框架体系,提出绿化景观与边坡植被恢复融合的设计方法。 相似文献
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Integrated land use/transportation forecasting models add significant policy and infrastructure alternatives analysis capabilities to the urban planning process. Historically, the financial, time, and staff requirements to develop one of these models has put them beyond the reach of most small- to medium-sized urban areas. The purpose of this paper is to present the large zone economic submodel of SE3M, an integrated model – founded upon economic base theory and bid-rent theory – that is reasonably accurate, yet simpler in form, function, and implementation than competing models. The US territory of Guam is used as the case study/proof of concept implementation for this model framework. The submodel presented here was validated against a horizon year with known data for zonal level population and employment totals together with control totals for the island as a whole. The model was able – across two base years and one validation, horizon year – to locate all jobs and a high percentage of the population on each zone on the island. 相似文献