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1.
高速公路建设与环境保护的协调发展   总被引:2,自引:0,他引:2  
张环  刘延华 《科技信息》2009,(9):315-315
介绍高速公路的建设对环境所产生影响,简述我国公路环境保护设计的现状;分别从设计、施工和运营过程中提出了一系列高速公路建设过程中环境保护措施与对策:  相似文献   

2.
甘肃高速公路环保和绿化对策   总被引:1,自引:0,他引:1  
文章针对甘肃省高速公路建设带来的公路污染、公路对周边环境影响和绿化问题,从甘肃省特有的地质地貌、气候特点,着重分析了甘肃高速公路建设如何从设计、施工、运营养护过程提高公路沿线环境保护和绿化工作,减少或杜绝公路环境污染、恢复路域生态环境,构建和谐交通。  相似文献   

3.
浅谈高速公路绿化景观设计和建议   总被引:1,自引:0,他引:1  
王飞  白冰 《科技信息》2009,(5):321-321,331
高速公路景观设计是实现公路与环境和谐统一的重要手段。渴望通过案观再造与环境保护设计使公路建设对生态环境的破坏减小到最低程度。旨在对高速公路景观设计提出再认识,努力创造出一个高速、快捷、舒适、优美的公路环境。  相似文献   

4.
一、概述由于国民经济的发展和路网完善的需求,高速公路逐步进入山区。高速公路由于其线形指标高,工程艰巨,投资巨大,对自然环境的破坏也非常严重。随着环境保护理念的日益深入人心,对于山区高速公路的勘察设计、施工运营等方面的环保要求也越来越高。山区公路环境载体主要是自然环境,也是地质环境。山区一般地形地质条件复杂,地质环境脆弱,地质灾害多发,高速公路的建设不可避免的要切坡、填沟、打洞(隧道),对地质环境造成严重破坏,处理不好还会诱发和加剧各种地质灾害,增加公路建设投资,影响工期,甚至给运营阶段带来严重的安全隐患。因此山…  相似文献   

5.
王克礼 《甘肃科技纵横》2010,39(5):72-73,99
伴随着我国公路的高速发展,工程建设对环境的污染,公路对周边环境影响等问题也大量凸现出来。如何解决公路设计中带来的环境问题,如何解决公路建设中对环境的影响问题是我们公路人目前面对的主要课题。生态公路的建设,要剔除先破坏后治理的观念,建立可持续发展观念,工程建设服从于环境保护。环境保护设计不过分强调公路构筑物与自然的区别,应使公路工程与自然环境融为一体,使公路与周围环境形成新的人文景观,提供良好的视觉环境。  相似文献   

6.
高浩然 《科技信息》2011,(13):702-702,691
保持干线公路完好畅通,为人们提供便捷、舒适、优美的出行道路环境,当好建设小康社会的先行官,是公路管理机构应尽的职责。然而随着市场经济的发展,"大路大富、小路小富、无路不富、高速公路快富"的观念已深入人心。许多人在"要想富、紧靠路"思想的支配下,沿路开厂、设店,许多沿线乡镇政府在进行村镇规划时也是沿路规划开  相似文献   

7.
近年来,湖南高速公路建设取得了突飞猛进的发展,随着2009年常吉、韶山2条高速公路的建成通车,湖南高速公路通车里程已突破2000公里大关。基于经济发展与环境保护的天然矛盾,快速推进的湖南高速公路建设给环境带来了诸多不利影响,例如破环了沿线的景观环境、加剧了水土流失、加重了大气、噪声以及水源、水质的污染等等。本文在阐述湖南高速公路建设对环境对造成损害的同时,分别从具体操作层面和管理层面提出了如何在湖南的高速公路建设中保护环境的对策。  相似文献   

8.
陶富有  王红伟 《科技信息》2011,(13):696-696,717
高速公路是交通基础设施的重要组成部分,是社会经济发展的物质基础,没有这种物质基础就会增加社会经济的运行成本,甚至制约社会经济的发展。在高速公路规划设计、建设施工各个环节都应该重视生态环境保护,通过科学合理的生态环境影响评价体系来指导和规范建设。为了推动社会经济快速发展,高速公路建设将在较长时期内持续,伴随高速公路建设全过程的环境保护是依法治国,实施和谐发展战略的重要研究课题之一。根据各地的自然环境、生态环境、社会经济环境特点,因地制宜地解决好公路建设的环境保护问题,具有重要意义。  相似文献   

9.
陈思德 《工程与建设》2011,25(2):204-205,209
公路是带状结构物,有一定建设规模的公路将穿越一个或多个地域,对各地域的水环境均有一定的影响.公路建设应首先考虑公路水环境保护设计,使得公路建设对水环境的影响隆低到最低.该文以已建成的蚌明高速公路项目水环境保护设计为例,简要阐述了高速公路水环境保护的设计方法与保护措施,可为今后类似地区公路项目的水环境保护设计提供参考.  相似文献   

10.
自从改革开放以来,我国经济还有社会建设都迅猛发展起来,高度公路的建设也是这样。高速公路建设的快速发展除了给人们的生产生活带来更多的便利之外,施工的环境也越来越复杂,高速公路施工的技术要求越来越高,公路施工工程关键部位的施工必须重视起来。该文主要就公路工程关键部位的把控、管理以及施工技术3个方面进行简要分析,希望能对如何做好工程施工中关键部位的施工工作有所帮助。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

15.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

16.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

17.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

18.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

19.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

20.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

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