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Characteristics and changes of permafrost along the engineering corridor of National Highway 214 in the eastern Qinghai-Tibet Plateau 被引量:1
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作者 Yu Sheng JiChun Wu +3 位作者 Wei Cao JianHong Fang AnHua Xu ErXing Peng 《Research in Cold and Arid Regions》 CSCD 2020年第6期503-516,共14页
Due to a series of linear projects built along National Highway 214,the second"Permafrost Engineering Corridor"on the Qinghai-Tibet Plateau has formed.In this paper,by overcoming the problems of data decentr... Due to a series of linear projects built along National Highway 214,the second"Permafrost Engineering Corridor"on the Qinghai-Tibet Plateau has formed.In this paper,by overcoming the problems of data decentralization and standard inconsistency,permafrost characteristics and changes along the engineering corridor are systematically summarized based on the survey and monitoring data.The results show that:1)Being controlled by elevation,the permafrost is distributed in flake discontinuity with mountains as the center along the line.The total length of the road section in permafrost regions is 365 km,of which the total length of the permafrost section of National Highway 214 is 216.7 km,and the total length of the permafrost section of Gong-Yu Expressway is 197.3 km.The mean annual ground temperature(MAGT)is higher than−1.5℃,and permafrost with MAGT lower than−1.5℃ is only distributed in the sections at Bayan Har Mountain and E'la Mountain.There are obvious differences in the distribution of ground ice in the different sections along the engineering corridor.The sections with high ice content are mainly located in Zuimatan,Duogerong Plain and the top of north and south slope of Bayan Har Mountain.The permafrost thickness is controlled by the ground temperature,and permafrost thickness increases with the decrease of the ground temperature,with the change rate of about 37 m/℃.2)Local factors(topography,landform,vegetation and lithology)affect the degradation process of permafrost,and then affect the distribution,ground temperature,thickness and ice content of permafrost.Asphalt pavement has greatly changed the heat exchange balance of the original ground,resulting in serious degradation of the permafrost.Due to the influence of roadbed direction trend,the phenomenon of shady-sunny slope is very significant in most sections along the line.The warming range of permafrost under the roadbed is gradually smaller with the increase of depth,so the thawing settlement of the shallow section with high ice-content permafrost is more significant. 展开更多
关键词 CHARACTERISTICS CHANGES PERMAFROST engineering corridor of national highway 214 Eastern Qinghai-Tibet Plateau
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Geotechnical Investigation of Slopes along the National Highway (NH-1D) from Kargil to Leh, Jammu and Kashmir (India) 被引量:3
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作者 Gulzar Hussain Yudhbir Singh Ghulam Mohd Bhat 《Geomaterials》 2015年第2期56-67,共12页
The national highways are always considered as the economic backbone of the country and have often assisted development work all along their routes. The National Highway (NH-1D) is the most strategic and the only all ... The national highways are always considered as the economic backbone of the country and have often assisted development work all along their routes. The National Highway (NH-1D) is the most strategic and the only all weather surface link between the two districts of Ladakh region (Kargil and Leh). The area under investigation experiences high vehicular traffic, particularly between March and August, as in the remaining months the Kargil and Leh districts?remain cutoff?from each other due to bad weather. In recent years, frequent occurrences of slope failures along the highway primarily affect the smooth functioning of the traffic movement which severely affects the life of the people of the area. Strategically, this road network is very important and plays a significant role in transportation and other activities. In order to ensure the stability of road network in the area, it becomes extremely important to understand the triggering mechanism of these failures. The present study made an attempt in this direction and the Slope Mass Rating (SMR) method has been used for slope stability analysis at different locations. The stability of the slopes was also assessed using kinematic analysis conjointly with SMR to identify the types of failure and its potential failure directions associated with each slope. The result obtained after calculating RMR from the selected facets ranges from 11 to 89 with lower values indicating presence of potentially unstable areas. Results have shown that in a total of 20 facets, 65.28% belong to wedge failure, 22.26%?belong to toppling failure and 12.45% belong to plane failure. 展开更多
关键词 national highway (NH-1D) Kargil Leh RMR SMR Kinematic Analysis Slope Stability
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Spatial-temporal Patterns of Land-use Change in Typical Transect Area Along China National Highway 106 During 1996-2008
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作者 LIU Yu LIU Yansui +1 位作者 GUO Liying LU Shasha 《Journal of Northeast Agricultural University(English Edition)》 CAS 2011年第3期39-46,共8页
Based on land-use database updated with the survey of 1996, 2000, 2004 and 2008, this paper analyzed the land-use changes in the typical transect area along National Highway 106 with the aid of GIS technology and quan... Based on land-use database updated with the survey of 1996, 2000, 2004 and 2008, this paper analyzed the land-use changes in the typical transect area along National Highway 106 with the aid of GIS technology and quantitative models. The results showed that arable land had been continuously decreased from 1996 to 2008, with a loss of 65.85× 10^3 hm2 and an average decrement of 5.49×10^3 hm^2 per year, and the loss in northern areas was larger; garden land and woodland were gradually centralized to the predominance area with an increment of 25.73×10^3 hm2 and 22.37×10^3 hm2, respectively; residential and industrial land increased year after year, and the transportation land showed the equalized developing spatial pattern; the increment of construction land and encroachment on arable land in the area were deeply influenced by the national macroscopic land-use policies, the rapid advance of urbanization and the development level of the regional economy. Through this case study, it is suggested that differential land- use policies should be adopted to create good environmental conditions to guarantee food security and to promote the economic development. 展开更多
关键词 land-use change mechanism analysis transect area along China national highway 106
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基于空间插值与PMF模型的国道沿线土壤重金属源解析:以107国道岳阳段为例
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作者 杨鹏至 赵元 +4 位作者 肖粤新 闵英姿 邓曌 郭军 韦晓堃 《现代地质》 CAS CSCD 北大核心 2024年第3期694-705,共12页
为了评估国道交通对两侧土壤的影响,查明其重金属污染特征和来源,选取107国道岳阳县段作为研究区域。在该区域两侧各1 km范围内采集了246个表层土壤样品,并测定了Pb、As、Cd、Cr、Cu、Ni、Zn、Hg这8种重金属元素的含量。通过对比分析国... 为了评估国道交通对两侧土壤的影响,查明其重金属污染特征和来源,选取107国道岳阳县段作为研究区域。在该区域两侧各1 km范围内采集了246个表层土壤样品,并测定了Pb、As、Cd、Cr、Cu、Ni、Zn、Hg这8种重金属元素的含量。通过对比分析国道两侧土壤中重金属污染情况和元素含量差异,结合克里金空间插值法和PMF模型,进一步揭示这些重金属的潜在来源。结果表明:(1)107国道岳阳县段两侧土壤属强酸性土壤,重金属之间的差异反映了土地利用类型和人类活动对土壤重金属分布的显著影响。(2)单因子污染指数均值显示Cr、Ni、Zn、Cd无污染,Cu、As、Hg、Pb为轻度污染,内梅罗综合污染指数表明研究区土壤整体轻度污染。(3)空间插值分析显示,As、Cr、Cu、Ni在空间分布上高度重叠;Pb和Zn在空间上分布在农田耕地区域;Cd元素的空间分布异常区域主要为新开镇;Hg元素的空间分布特征显示林地为低值区域,说明了自然地质背景与土地利用类型对土壤重金属的复杂相互作用。(4)PMF源解析识别了4种污染源,分别为交通源、农业源、自然源、大气源,其中交通源和农业源合计占比80.3%,是影响107国道岳阳县段两侧土壤中重金属元素的主要因素,说明107国道两侧土壤受交通运输和人类活动影响较明显。综上所述,空间插值分析和PMF模型的结果相互之间验证效果较好,这一综合方法对重金属潜在来源的成分识别较为理想。 展开更多
关键词 107国道 土壤重金属 空间分布 克里金法 PMF模型
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武汉市江夏区107国道沿线生态家园建设的探讨 被引量:1
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作者 白涛 《安徽农业科学》 CAS 北大核心 2010年第1期448-450,457,共4页
阐述了武汉市江夏区的气候、地形及资源概况和建设生态家园的必要性,提出江夏区107国道沿线新农村建设、花卉苗木基地建设、花卉苗木展示交易中心建设、杉木丰产林基地建设、现代都市农业产业园建设和生态保护工程建设等6大生态家园建... 阐述了武汉市江夏区的气候、地形及资源概况和建设生态家园的必要性,提出江夏区107国道沿线新农村建设、花卉苗木基地建设、花卉苗木展示交易中心建设、杉木丰产林基地建设、现代都市农业产业园建设和生态保护工程建设等6大生态家园建设项目构想,以期为地方区域经济建设提供参考。 展开更多
关键词 江夏区 107国道 生态家园
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107国道(新乡段)两侧土壤铅含量调查 被引量:1
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作者 任秀娟 陈翠玲 +2 位作者 曹丽华 闻刘伟 刘合满 《河南科技学院学报》 2005年第2期82-83,共2页
调查了107国道(新乡段)两侧5~120m内耕层土样的铅含量,结果表明:离公路越近土壤铅含量越高,距公路越远土壤铅含量越低,距公路120m处,接近远离公路无污染区土壤铅含量.此外,公路西侧土壤铅含量大于东侧.
关键词 土壤 107国道
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G107国道附近农田土壤的铅含量研究 被引量:1
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作者 叶海燕 朱朝阳 +1 位作者 华阳阳 周环波 《河北农业科学》 2010年第5期85-87,共3页
采用直接固体进样技术,测定了G107国道两侧不同距离内采集土壤样品的铅含量。结果表明:采用直接固体进样方法,铅的检出限为0.016 ng,样品测试的相对标准偏差为8.6%~10.0%、回收率为84.5%~105.6%;距离G107国道100~1 500 m土壤样品的Pb... 采用直接固体进样技术,测定了G107国道两侧不同距离内采集土壤样品的铅含量。结果表明:采用直接固体进样方法,铅的检出限为0.016 ng,样品测试的相对标准偏差为8.6%~10.0%、回收率为84.5%~105.6%;距离G107国道100~1 500 m土壤样品的Pb含量为25.23~35.43 mg/kg。公路主干道两侧土壤铅的主要来源之一为汽车尾气。 展开更多
关键词 土壤样品 铅含量 原子吸收光谱 G107国道
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城际公路景观绿化的提升改造——以信阳市平桥区107国道景观绿化提升改造为例 被引量:3
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作者 赵莲花 王富河 +2 位作者 冯强 龚䶮 吴思海 《绿色科技》 2020年第19期64-66,共3页
指出了城际公路作为城市的第一道大门,是人们感知该座城市人文气息的重要通道,城际公路沿线绿化景观对城市的形象有重要的作用。以信阳市平桥区107国道道路景观绿化提升改造为实例,提出了城际道路景观绿化提升改造的设计方案。
关键词 城际公路 绿化提升 平桥区 107国道 信阳
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基于107国道的货物运输管理方案研究——以宝安段禁限货为例 被引量:2
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作者 林珊 《物流工程与管理》 2019年第9期64-66,共3页
107国道作为深圳市宝安区南北向最重要的通道,对宝安区城市与社会经济的发展做出了突出的贡献,但其已不再适应宝安区未来城市发展要求,亟需进行全面提升改造,而禁限货作为改造的前提,起着至关重要的作用。文中从107国道的发展现状着手,... 107国道作为深圳市宝安区南北向最重要的通道,对宝安区城市与社会经济的发展做出了突出的贡献,但其已不再适应宝安区未来城市发展要求,亟需进行全面提升改造,而禁限货作为改造的前提,起着至关重要的作用。文中从107国道的发展现状着手,分析其禁限货的必要性,提出了禁限货的具体方案及相关配套措施。 展开更多
关键词 107国道 禁限货 方案
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深圳市宝安区107国道禁限货研究 被引量:1
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作者 姜培 《科技广场》 2017年第3期161-164,共4页
107国道为宝安区重要的对外通道,目前受大量的通过性货运交通及沿线快速增长的交通需求影响,交通拥堵问题日益严重,极大地制约了沿线区域发展。为支撑产业转型升级,引领产城耦合发展,急需对107国道实施禁限货研究。
关键词 107国道 禁限货 适应性研究
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Atmosphere of Accidents along the Douala-Yaounde National Road in Cameroon: Hoofmarks, Drivers, Challenges and Proactive Options
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作者 Nnecdem Padison Ojuku Tiafack 《Journal of Transportation Technologies》 2022年第3期323-345,共23页
Road transport and safety is a thorny problem in the world today following the occurrence, recrudescence and outcomes of accidents in our society. These accidents are a public health hazard and vector of underdevelopm... Road transport and safety is a thorny problem in the world today following the occurrence, recrudescence and outcomes of accidents in our society. These accidents are a public health hazard and vector of underdevelopment in developing countries amongst which is Cameroon. According to the World Health Organisation, road accidents ranked 3<sup>rd</sup> in position among the leading causes of mortality in the world and caused approximately 1.2 million deaths with 50 million people injured worldwide. The frequency of accidents along National Road 3 linking Douala (the economic hub of the CEMAC region) and Yaounde (the political Capital of Cameroon) remains a thorny problem. This is because 50 % of accidents in the Southern part of Cameroon occur along this stretch of the triangle of death necessitating sustainable strategies to effectively curb the situation. Efforts both structural and non-structural have been put in place over decades by the Cameroon government, civil society organisations, Non-Governmental Organisations, local communities, and other actors to contain the situation without success. This is because the measures often target road users, the state of vehicles and repair of existing roads. Along National Road 3, the poor state of the road in combination with other risk factors has been identified as prime factors that sustain accidents. This paper argues that the frequency of accidents is high, impacts on man and property enormous and the solutions to solve the problem ineffective. The methodology used for data production exploits primary and secondary sources of data from works on road transport in Cameroon, Africa and the world to assess the dynamics, outcomes, challenges and options for road accidents control on the study site. These sources integrate field surveys, administration of questionnaires, literature review and grey data sources for their findings. The results show that until recent on some roads little attention has been paid on proactive solutions visible in other countries to combat road accidents. These are the creation of multi lanes to reduce contact, investment on alternative transport modes and road modernisation to decongest existing roads. How this innovation to curb road carnage redresses the problem in question is also a focus of this paper. 展开更多
关键词 Accidents Douala-Yaounde national 3 highway OPPORTUNITIES Road Transport
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Comparison of Traffic Growth Factors in Three Major Highways of Bangladesh: A Case Study
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作者 Mohammad Ahad Ullah Hamid Nikraz Md. Shamsul Hoque 《Journal of Traffic and Transportation Engineering》 2015年第2期111-117,共7页
The unanticipated increase in vehicle population and heavy axle loads has brought the road network of Bangladesh to a crumbling stage. The network is grossly short of its structural capacity, highly distressed and has... The unanticipated increase in vehicle population and heavy axle loads has brought the road network of Bangladesh to a crumbling stage. The network is grossly short of its structural capacity, highly distressed and has started showing signs of premature failure. The RHD (Roads and Highways Department) of Bangladesh uses 8%-10% growth rate of traffic for structural design of these highways that need to be upgraded due to present high traffic volume demand. An attempt has been made through this case study, by using traffic flow data from different computerized toll plaza established in recent times, to predict traffic growth pattern of different highways of Bangladesh. The toll collectors of different computerized toll plaza have been recording and preserving round-the-year continuous flow data in a systematic manner. The study has taken this prospect of utilizing several years of flow data along Dhaka-Chittagong Highway (N-1), Dhaka-Sylhet Highway (N-2), Dhaka-North Bengal Highway (N-5) and found the traffic growth factor of 21.03%, 23.79% and 11.31%, respectively, which is much higher than that transport authority of Bangladesh is currently using. By the use of accurate traffic engineering parameters such as traffic growth factors, it is possible to resist frequent distress of pavement and sustainable pavement management can be implemented by RHD. 展开更多
关键词 Traffic growth factor traffic volume national highway geometric design standard.
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浅谈107国道(宝安段)改造征地测量的几点体会
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作者 马向阳 陈永刚 《大坝与安全》 2006年第C00期57-59,共3页
详细介绍了107国道宝安段改造征地测量中的权属调查、房屋面积测绘、构筑物测量等工作以及与地方政府及老百姓进行密切联系、配合、协调,以解决征地测量中的问题等工作体会。
关键词 107国道改造 征地测量 面积测绘 构筑物测量
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国道107宝安段兴围、黄田掉头匝道桥工程施工新技术
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作者 邵一帆 《交通标准化》 2014年第16期191-195,共5页
国道107宝安段兴围、黄田掉头匝道桥工程采用了钢混组合梁、钢桁腹梁、叠合梁三种结构方式,并应用了多种施工新技术、新材料、新工艺。就钢混组合梁和钢桁腹梁主要施工技术进行了探讨,可为同类桥梁的建设施工提供参考。
关键词 国道107 掉头匝道桥 钢混组合梁 钢桁腹梁 叠合梁
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105名维吾尔族百岁老人口腔粘膜状况的调查分析 被引量:2
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作者 邱洪晟 李翠芳 +4 位作者 冯咪咪 白生义 王端儒 喀什 和田 《实用口腔医学杂志》 CAS CSCD 北大核心 1996年第2期107-109,共3页
对105名维吾尔族百岁老人的口腔粘膜状况进行调查分析。结果为:全口粘膜无任何异常者占16.2%(17/105)。唇、颊、腭、龈粘膜无异常者占65.7%(69/105),有一种或一种以上的生理或病理性异常者占34.3%... 对105名维吾尔族百岁老人的口腔粘膜状况进行调查分析。结果为:全口粘膜无任何异常者占16.2%(17/105)。唇、颊、腭、龈粘膜无异常者占65.7%(69/105),有一种或一种以上的生理或病理性异常者占34.3%(36/105),主要为血管痣斑、粘膜老年斑、局部萎缩、口腔白斑等。舌部粘膜无异常者占20.9%(22/105),有一种或一种以上异常者占79.0%(83/105),主要为裂沟舌,占93.9%(78/83)。未发现有危害或危及生命健康的病损。唇颊腭龈粘膜高度红润、光泽清洁,反映有良好粘膜功能和免疫功能。 展开更多
关键词 维吾尔族 老年人 口腔粘膜
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Health Risks Associated with Heavy Metals in Fine Particulate Matter: A Case Study in Delhi City, India 被引量:3
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作者 Isha Khanna Mukesh Khare Prashant Gargava 《Journal of Geoscience and Environment Protection》 2015年第2期72-77,共6页
The concentrations of twenty five heavy metals adsorbed to fine fraction of particulate matter, PM2.5 (d ≤ 2.5 μm) have been experimentally analysed at a sampling site located at the kerbside along a National Highwa... The concentrations of twenty five heavy metals adsorbed to fine fraction of particulate matter, PM2.5 (d ≤ 2.5 μm) have been experimentally analysed at a sampling site located at the kerbside along a National Highway in Delhi city, India. The sampling has been carried out for 12-hour using Ecotech Intruments, APM550. The PM2.5 has been collected on PTFE filter papers for the winter season. Later, the filter papers have been analysed for various heavy metal concentrations using ED-XRF. It has been observed that the metals concentrations are in this trend: Si > K > S > Ca = Fe > Zn = Pb > Br. it is observed that Si has high co-relation with Ca, Fe and K, which may be due to crustal origin of all three elements;while S, Br and Pb may be from vehicular exhaust emissions and/or abrasions due to brake and tyre wear. The potential health risks associated with different carcinogenic heavy metals have also been calculated. One of the health risk indicators, the excess cancer risk (ECR), is found to be in the order as As > Cd > Pb > Cr > Ni. 展开更多
关键词 FINE PM HEAVY Metals EXCESS Cancer Risk Kerbside national highway
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穿越107国道工程顶管穿越设计——基于南水北调配套工程
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作者 韩李明 《工业技术创新》 2017年第5期59-61,共3页
南水北调配套工程沿线穿越工程众多,输水管道开槽敷设困难。为了保证配套工程建设的顺利实施,同时保证被穿越建筑物的安全,某设计单元穿越107国道工程优选了顶管穿越的设计方案。基于顶管结构分析,提出了长距离顶管加设中继间的方案,列... 南水北调配套工程沿线穿越工程众多,输水管道开槽敷设困难。为了保证配套工程建设的顺利实施,同时保证被穿越建筑物的安全,某设计单元穿越107国道工程优选了顶管穿越的设计方案。基于顶管结构分析,提出了长距离顶管加设中继间的方案,列举了施工技术要点。本工程顺利完成,验证了方案设计的可行性和合理性。 展开更多
关键词 顶管 穿越107国道 南水北调配套工程 中继间
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