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为提高农村公路路面质量评估准确性、开展针对性的养护,对自动化检测在农村公路路面质量评估中的作用进行分析。首先,概述自动化检测技术原理与应用;其次,指出传统手工评估方法的局限性,如主观性强、时间成本高及评估结果不精确;再次,以激光扫描技术为例,对自动化检测技术的具体应用进行分析;最后,阐述自动化检测对农村公路可持续性的影响,以期为农村公路路面质量评估工作提供参考,以便及时提前发现并解决农村公路路面质量路面问题。 相似文献
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为提高农村公路养护效果、促进农村经济发展、早日实现乡村振兴目标,对同步碎石封层养护技术进行研究。先阐述同步碎石封层技术的应用原理,在此基础上,解析该技术在农村公路养护中所展现出的各种优势,最后根据相关养护经验,详细论述该技术在农村公路养护中的具体运用,希望为相关从业者提供一定的参考。 相似文献
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农村公路的建设有利于"三农"问题的解决和农村经济的发展,现阶段,随着政府对农村公路建设的重视,以及新农村的建设的发展,使农村公路建设得到快速的发展,同时,在公路的管理和建设中也显现出了很多的问题和要求。本文主要通过对农村公路路面建设的技术和问题进行分析,试图找到解决农村公路建设和管理的对策。 相似文献
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通过农村公路危桥加固改造,有利于确保群众出行安全,延长公路使用寿命,进一步确保农村公路稳定可持续运行。分析农村公路危桥的病害类型和改造技术应用与管理要点,结合实例对农村公路危桥改造工程的实施意义进行研究和探讨。 相似文献
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近年来,国家非常重视农村基础设施建设,从中央到地方各级党委、政府出台了一系列优惠政策,各地呈现出农村公路建设热的良好势头,但是,随着农村公路建设如火如荼开展,还应该注意到一个很容易被忽视但却尤为重要的问题那就是农村公路建设中的环保问题。文章阐明了农村公路建设环保工作的重要性。并对其存在的问题进行了分析,提出了解决方法和措施 相似文献
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农村公路普遍采用水泥混凝土路面和沥青混凝土路面,经过长期使用,路面会因各种原因产生破损,影响公路的正常运行,甚至会降低路面的使用寿命。为了提高农村公路的养护水平,对农村公路的常见病害和成因进行分析,提出农村公路养护技术应用与病害防治策略,以期为同类型养护工作提供参考。 相似文献
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由于目前我国经济的蓬勃发展以及不断加快发展的城镇化,基础设施建设过程中产生的建筑垃圾如混凝土块、废渣等日趋增加。同时如何在我国的自然资源和土地资源不足的严峻挑战下,科学合理地对建筑垃圾数量进行控制并对其进行循环利用,不仅可以实现建筑垃圾资源化,达到绿色环保可持续发展的目标,还可以大幅度提高社会和经济效益。本文从建筑垃圾的现状及综合治理的意义出发,研究了建筑垃圾分类与处理,分析了建筑垃圾的作用机理,最后研究了建筑垃圾在路基施工中的应用。 相似文献
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The increasing worldwide production of passenger cars depletes natural resources and increases the number of end-of-life vehicles (ELVs) to be processed. Lack of landfill capacity and a growing scarcity of natural resources have lead to severe ELV reuse and recovery targets in the European Union (EU). This paper examines the main influencing parameters affecting the amount and composition of ELV waste originating from passenger cars to be treated in Authorized Treatment Facilities (ATFs). Moreover the effect of a changing number, composition and life span of passenger cars on the ability to meet the ambitious EU ELV Directive 2000/53/EC targets in 2015 is examined for Belgium. Using system dynamics, the aforementioned changing parameters are studied from 1990 and projected to 2030. The model results show that the total annual weight of ELV waste to be reused and recycled in Belgium is expected to grow over the coming years despite the economic downturn of 2008 and its effect on GDP growth. Moreover it shows that Belgium can sustainably achieve the ambitious EU ELV Directive 2000/53/EC targets in 2015 and thereafter if it continues to invest in waste treatment of ELV plastics. The availability of higher amounts of ELV plastics proves to be favourable to trigger investments in their reusing and recycling. We demonstrate that this can be realized by reducing export of discarded passenger cars, shortening the life span of passenger cars or shortening the time for investing in additional plastic recovery. 相似文献
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在长输管线中,泵站是输油系统中必不可少的部分,而且泵站的运行成本巨大。工况处于经常变化的输油系统是极为普遍的,在这些系统中,通常采用的节流调节法浪费能量。如果能很好地使用变频调速系统,能实现泵站的优化运行。文中介绍了泵机组变频节能工艺理论以及比例定律和相似抛物线的基本原理,并对调速后泵的转速和轴功率进行了计算,进行定速泵与变速泵串联运行试验,并比较了不同操作方式的能耗。 相似文献
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Abstract This article documents the authors' experience with the modeling, simulation, and analysis of a university transportation system, using the TRansportation ANalysis and SIMulation System (TRANSIMS). The processes of data preparation and network coding are described, followed by the algorithm developed to estimate the dynamic 24-hour demand, which includes a procedure for estimating the ‘desirability’ of the different parking lots from readily available data. The dynamic demand estimation algorithm is validated by comparing estimated and observed parking lot occupancies, where it is shown that the algorithm is capable of replicating observed results. Finally, an example is included to demonstrate how the developed model can be used in campus transportation planning. Besides serving as a first case study for using TRANSIMS to model a university campus, the study's contributions include the development of a procedure for parking lot desirability ranking and a practical procedure for estimating dynamic demand on university campuses. 相似文献
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Jarold A. Kieffer 《先进运输杂志》1988,22(2):92-106
Traffic congestion in the world's metropolitan areas is going from bad to worse. Urban/suburban transportation has become like the weather; people talk a lot about it but shrug it away as something they can't do much about. This is a world-wide phenomenon, as motor vehicle use grows, and as urban sprawl continues. 相似文献