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广西嘉会-龙虎关二级公路滑坡段的治理方法 总被引:1,自引:0,他引:1
文章从地质水文条件及滑坡的基本特征,分析造成广西嘉会-龙虎关二级公路滑坡的主要因素,通过对滑坡体的稳定性计算,提出了滑坡的治理方案。 相似文献
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奉节一云阳高速公路杏花村滑坡由于开挖、降雨及地下水等因素影响,随时有滑动破坏的可能,将直接危及公路施工及正常运营而造成重大的损失。文章结合该滑坡的工程地质条件与形态特征,分析了滑坡形成的原因及稳定状态,提出了相应的治理措施。 相似文献
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因连续降雨,河南省南阳市毛集镇湖山村斜坡局部发生滑坡,对居民房屋和经济造成巨大损失。以该滑坡为研究对象,通过Midas/GTS有限元数值模拟软件建立三维有限元模型,运用强度折减法SRM对滑坡在天然工况、自重+暴雨工况、自重+地震工况3种不同工况条件下的稳定性进行分析计算,得出滑坡的稳定性系数。结果表明:该滑坡在天然工况下处于欠稳定状态,在自重+暴雨工况、自重+地震工况下呈不稳定状态。 相似文献
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公路路域生态工程技术研究课题组 《西部交通科技》2007,(3):5-7
“公路路域生态工程技术”针对目前国内公路建设中存在的主要生态问题开展研究,旨在提出适合于西部不同生态环境区域的公路路域生态工程技术体系和工程技术指南,并完成相关的示范工程,以推动西部公路路域生态建设水平,促进西部地区的可持续发展。文章介绍该项目的主要技术及创新成果。 相似文献
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岩石边坡生态恢复与治理技术是目前高速公路建设中的一个热点问题,由于岩石边坡上缺少植物生长所需要的土壤条件、养分及水分条件,不能直接通过植树种草进行生态恢复,因此岩石边坡的生态恢复与治理问题急待解决。本文重点阐述了平乐至钟山高速公路K139 450~150 575路段的路堑岩石边坡采用喷混植生技术所进行的生态恢复与治理试验情况,并对试验结果进行分析,对试验中产生的问题进行了探讨,提出了完善此项技术需要进一步研究的内容及方向。 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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绿色通道生态建设工程是国土绿化的重要组成部分,是具有战略意义的国土绿化工程。文章以南宁-友谊关高速公路为例,说明在高速公路绿色通道景观生态工程规划设计中,应注重高速公路两侧铁丝网外侧面上成片绿色林带、沿途线状绿化带、重点景观节点营造与风貌优化建设,强调特色路段景观风貌的控制和强化规划。 相似文献
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挡土墙是公路建设中经常出现的一种构造物,与一般挡土墙相比,格宾网箱挡土墙属柔性结构,具有生态好、景观好、与环境协调、对基础要求低等优点,文章通过广西全州兴安高速公路的设计实例,介绍这种新型构造物。 相似文献
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In this work the trade-off between economic, therefore fuel saving, and ecologic, pollutant emission reducing, driving is discussed. The term eco-driving is often used to refer to a vehicle operation that minimizes energy consumption. However, for eco-driving to be environmentally friendly not only fuel consumption but also pollutant emissions should be considered. In contrast to previous studies, this paper will discuss the advantages of eco-driving with respect to improvements in fuel consumption as well as pollutant gas emissions. Simulating a conventional passenger vehicle and applying numerical trajectory optimization methods best vehicle operation for a given trip is identified. With hardware-in-the-loop testing on an engine test bench the fuel and emissions are measured. An approach to integrate pollutant emission and dynamically choose the ecologically optimal gear is proposed. 相似文献
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Household car ownership has risen dramatically in China over the past decade. At the same time a disruptive transportation technology emerged, the electric bike (e-bike). Most studies investigating motorization in China focus on macro-level economic indicators like GDP, with few focusing on household, city-level, environmental, or geographic indicators, and none in the context of high e-bike ownership. This study examines household vehicle purchase decisions across 59 cities in China with broad geographic, environmental, and socio-economic characteristics. We focus on a subset of households who own e-bikes and rely on a telephone survey from an industry customer database. From these responses, we estimate two three-level hierarchical choice models to assess attributes that contribute to (1) recent car purchases and (2) the intention to buy a car in the near future. The results show that the models are dominated by household characteristics including household income, household size, household vehicle ownership, number of licensed drivers and duration of car ownership. Some geographic, environmental and socio-economic factors have significant influences on car purchase decisions. Only two city-level transportation variable have an effect – higher taxi density and higher bus density reducing car purchase. Cold weather, population density gross domestic product per capita positively influence car purchase, while urbanization rate reduces car purchase. Because of supply heterogeneity in the data set, described by publicly available urban transportation data, this is the first study that can include geographic and urban infrastructure differences that influence purchase choice and suggests potential region-specific policy approaches to managing car purchase may be necessary. 相似文献
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石家渡漓江大桥5#墩墩位处于厚砾石覆盖层,其下岩层十分破碎,溶洞发育,透水量大,地质情况复杂。文章介绍了在这一特殊地质情况下所采用的桥梁围堰方案及基础施工工艺,为特殊地质条件下的桥梁施工提供参考。 相似文献