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通过HC600型全液压动力头便携式钻机在武山温家沟金矿区、文县筏子坝外围铜矿区进行NQ、BQ型金刚石绳索取心钻探的效果,分析了全液压动力头便携式钻机相对于立轴式钻机的优点、不足及其经济性,提出全液压动力头便携式钻机在陇东南山区的适用性及我国地质岩心钻机发展的趋向。 相似文献
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本文介绍了便携式全液压钻机在秦岭地区固体矿产地质钻探中的应用情况,简述了EP600系列钻机基本概况与钻探工艺,结合不同工区11个钻孔分析了地层岩石级别与钻进施工效率的关系。针对该钻机在钻进效率、功率损耗、施工能力等方面的问题,通过合理选择（改进）钻头、降低钻杆孔内摩阻力及采用轻型高强钻杆等有效措施或建议,初步取得了较好的试验效果。提出了便携式全液压钻机的适用条件和优势,该钻机在地层岩石可钻性级别7级以下的浅孔（孔深<350 m）中钻进效率高,在复杂地形环境中具有搬迁便捷、组装快、环境破坏少的特点,满足了生态环境保护政策和绿色勘查工作相关要求,钻探综合经济成本明显降低。对于尚未解决的问题,给出了合理工作建议,为下步更好地发挥便携式全液压钻机效能起到了积极的指导与借鉴意义。 相似文献
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绿色勘查钻探施工广泛采用便携式全液压钻机,受便携钻机泥浆工艺、占地面积的影响,没有配套的泥浆净化设备,施工中存在浪费水资源、废弃泥浆没有环保处理的问题。综合分析各种泥浆净化方法,提出使用微型高频双层圆形振动筛净化泥浆的方案,效果较好,经济实用,符合绿色勘查要求。 相似文献
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本文从全液压动力头岩心钻机普及率不高的原因展开论述,从品牌知名度、技术成熟性、性能稳定性、部件可靠性、应用适应性等角度对全液压动力头岩心钻机选型进行了分析,提出了全液压动力头岩心钻机选型建议,为钻机的选择提供参考。 相似文献
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简要概述了全液压动力头岩心钻机目前的发展状况,分析了XD系列全液压动力头岩心钻机的特点、结构组成、性能参数以及钻机的应用情况。 相似文献
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本文针对目前市场上工程钻机施工过程中存在工艺适应性差、钻进效率低、能耗较高等问题,介绍了一种采用负载反馈系统的新型全液压工程钻机——CTG-200型工程钻机。其具有适应强、节能降耗、钻进行程长、起拔能力大及自动卸扣等优点。野外地质勘探结果表明,CTG-200型全液压工程钻机履带行走平稳,性能稳定,操作简单,给进辅助时间少,钻具提升速度快,拆卸钻具及多角度孔位施工方便快捷,很好地解决了工程施工过程中难以克服的问题。无疑,全液压工程钻机是解决当今钻探市场对钻机高效与节能环保需求的一个新的发展方向。 相似文献
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西安市地下水开发利用中的环境问题及对策 总被引：1，自引：1，他引：0
对西安市地下水开发利用中的环境问题进行了分析,指出地下漏斗、地面沉降、地裂缝以及地下水质污染是西安市存在的主要问题,地下水超采是引起以上问题最主要的因素,最后提出了回补地下水,充分利用非传统水资源,加强地下水开发利用规划等五项防治对策。 相似文献
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This paper examines environmental problems associated with Third World cities. It concentrates on environmental problems as they relate to health and living conditions, especially for lower income groups. After an outline of urban growth trends, these problems are discussed on three different geographic scales. At the regional level, the paper discusses how cities draw on a wider area for natural resources (and usually for labour) and have environmental impacts which stretch far beyond their boundaries, although the most pressing impacts tend to be on their immediate hinterland. At the city-wide level there are problems of disposing of household, human and industrial wastes and of associated problems of air and water pollution. At the level of the home or workplace there are problems of inadequate space and ventilation, inadequate infrastructure and basic services, and lack of provision for the safeguarding of human health. The final section discusses how governments might tackle the causes of these environmental problems on each of these scales. 相似文献
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K. Bouwer Prof. Dr. 《GeoJournal》1985,11(4):307-312
The author outlines the relationships between geography and the study of environmental problems. After WW II when these problems were growing in number and complexity, many geographers turned to the quantitative study of spatial relations and processes, neglecting the ecological aspects of human life on earth. However, recently human and physical geography are turning again to an ecological point of view. In the study of environmental problems, a synthesis of the spatial and the ecological traditions in geography is possible. The spatial aspects of environmental problems and environmental management in a systems-theory framework are the central points in the contribution of geography to an interdisciplinary environmental science. 相似文献
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文章介绍了黑宝山-木耳气盆地的经济地理秦件，地质环境背景，阐述了盆地的主要环境地质问题。第一环境地质问题即自然环境中存在的与地质有关的各种问题，它是由内动力地质作用和外动力地质作用引起的；区内主要有冻土。第二环境地质问题即由于人类各种工程、经济活动而引起昀与地质环境有关的问题；如水土流失、矿井塌陷、地表水、地下水及土壤污染等。论述了各环境地质问题产生的地区，分析了各主要问题的特征，形成条件及危害。 相似文献
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中国南方岩溶石山地区不同岩溶类型的地下水与环境地质问题 总被引：3，自引：0，他引：3
依据碳酸盐岩的出露形式、岩性和层组类型、大地构造等,将南方岩溶环境系统划分为裸露型、埋藏型、覆盖型和断陷盆地型,其中裸露型又可分为连续型和间互型.简要叙述了连续性、间互型、埋藏型和覆盖型岩溶区的大地构造、岩性和岩层组合方面的特征,结合多个典型点最新的研究成果,重点介绍了连续型岩溶区的地表水缺乏、污染、内涝和石漠化问题,提出修建水窖、封山育林等措施缓解缺水和治理石漠化;同时介绍了间互型岩溶区的地表、地下水污染、缺水、石漠化问题,提出依托高位隔水层溶洼成库、寻找蓄水构造打井、封山育林等治理措施;最后介绍了埋藏型岩溶区的缺水、石漠化和塌陷问题,指出打井、恢复植被等治理措施. 相似文献
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离散单元法同拉格朗日元法及其在岩土力学中的应用 总被引：67，自引：2，他引：67
离散单元法是一种适合于节理岩体的数值分析方法，拉格朗日元法则特点适用于解决大变形的问题。本文叙述了离散单元法和拉格朗日元法的基本原理以及有关参数的选择问题。文中还举出两种方法在岩土力学中的应用范围。 相似文献
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L. I. Chetverikov 《Mathematical Geology》1991,23(1):33-40
This paper considers the present state of mathematical geology. Three directions are recognized: applied, theoretical, and mathematical. Applied mathematical geology includes formal use of mathematics to solve problems and computer processing of data. Success is achieved by a correspondence of mathematical methods used to the nature of geological data. This correspondence can be demonstrated by purely mathematical means. Theoretical mathematical geology uses mathematics as a language of geology; however, a number of methodological problems must be solved: formalization of initial geological concepts and creation of a strict conceptual basis, substantiation of initial principles of mathematical simulation, creation of theoretical geological models, problems of elementary and coincidence in geology, and methodological substantiations of possibilities of any mathematical model to approximate geological models. The essense and significance of these problems are considered. The main task of mathematical geology is to prove its correspondence to the nature of the geological objects studied, geological data obtained, and geological problems solvable. Finally, the main problems of mathematical geology are not so much mathematical as geological and methodological. 相似文献
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Andrew B. Vistelius 《Mathematical Geology》1989,21(8):921-932
Summary Our experience has shown that any laboratory of mathematical geology can do significant work if its staff is composed of geologists who are able to critically assess geological ideas, are able to see new features in routine observations, and understand clearly what scientific problems they should solve, and why these problems can be solved with a mathematical approach more efficiently than through purely geological methods. The staff should include mathematicians who can solve nontrivial mathematical problems and are ready to seek problems that require joint participation with geologists. Both disciplines should collaborate benevolently with mutual interest, without any pressure, and develop a mutually understandable geologico-mathematical language. They should understand that obtaining such a language requires tremendous patience. Daily contacts and discussions on current problems are necessary as a forum for exchange of ideas. In our laboratory, seminars are organized as such forums. Lectures for this seminar ideally involve sufficiently broad problems with non-trivial results in mathematics and geology that provide educational aspects. Abstracts of lectures for this seminar which were delivered during winter 1984–1985, are published here to provide an indication of seminar contents. 相似文献
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介绍了在复杂地层科学深钻施工时遇到的困难和问题,主要包括破碎地层钻进问题和强缩径地层钻进问题,讨论了解决这些技术难题时采取的应对技术方案和措施,涉及取心钻进工艺方法和器具、钻机、泥浆体系以及极破碎、强缩径地层的特殊钻进、固井工艺和器具。 相似文献
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虚拟现实和G IS系统集成方法分析 总被引：1，自引：0，他引：1
从三个角度论述虚拟现实(V irtua l R ea lity,VR)和地理信息系统(G IS)集成的必要性,通过对集成方法的归纳,提出4种集成方式,并详细介绍了各自的结构体系和具体特征。在此基础上划分了VR与G IS系统集成的4个阶段,分析当前系统集成现状,指出其发展趋势。同时探讨了VR和G IS系统集成中存在的关键问题,包括数据、虚拟景观技术、VRG IS网络化等,给出目前解决这些问题的一些建议和具体途径。 相似文献