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以国土资源部探矿工程类研究所岩土钻掘技术创新、发展应用及存在问题为切入点，通过简要回顾我国岩土钻掘技术的发展，对我国岩土钻掘技术发展对策进行了研究，提出了我国岩土钻掘技术的发展对策与建议，主要提出了国土资源部探矿工程类研究所岩土钻掘技术既要为国家地质工作提供钻掘技术支撑，更要积极为国家经济建设服务，以及在此基础上建设国家钻掘技术支撑体系、适时进行专业学科结构调整等多条对策和建议。 相似文献
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中国地理学的发展战略研究 总被引：1，自引：0，他引：1
根据地理学的发展历程与研究对象，阐述了地理科学在社会发展中的地位与作用，介绍了现代地理学发展的主要趋势与特点，分析了中国地理学研究的主要特点、问题与差距，并对其今后发展的战略目标、重点领域、具体措施等提出了对策建议。 相似文献
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保护地下水资源的对策 总被引：1，自引：0，他引：1
本文在全面系统地分析了地下水资源开发利用中存在的主要问题后，提出了一系列保护地下水资源的对策，以实现合理开发利用和有效保护地下水资源，持续为我省经济快速发展作出更大贡献。 相似文献
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本文介绍了威海市矿产资源的基本情况，针对矿产资源管理中存在的主要问题，提出了加强矿产资源管理，促进矿业经济健康发展的基本对策。 相似文献
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文章总结矿产资源补偿费开征以来存在的主要问题，根据有关法规和征管工作的发展，提出卫些对策和建议。 相似文献
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随着经济的发展，人民生活质量的提高和法制观念的增强，砖瓦窑业生产存在的许多问题也显得日益突出。分析了目前全省砖瓦窑业存在的6个方面的主要问题，并有针对性提出了对策与建议。 相似文献
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2005中国矿产开发及矿产品供需形势分析与建议 总被引：1，自引：0，他引：1
根据“2005中国矿产开发及矿产品供需形势分析与对策研讨会”所提供的信息，全面总结了我国主要矿产资源的供需情况、价格增长幅度和各主要矿产资源的保障程度，指出了目前我国矿业发展中存在的主要问题，并提出解决问题的合理化建议。 相似文献
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文章依据城市地下水开发利用的基本情况，指出了延吉市地下水资源利用中存在的一些主要问题，提出广辟水源、防治污染、节约用水、建立合理的水价体系等对策建议，以促进水资源的可持续利用和经济社会的持续健康发展。 相似文献
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基于连续不确定区域的蚁群算法求解水文地质逆问题 总被引：2，自引：0，他引：2
本文在介绍求解复杂组合优化问题而提出的蚁群算法的基础上,提出一种基于连续不确定区域的蚁群算法。该方法将连续变量优化问题转化为一个组合优化问题,进而将蚁群算法求解。通过两个水文地质逆问题的求解,表明该方法在参数识别中计算结果可靠,具有较好的计算效率。 相似文献
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北京市斋堂镇地区煤炭开采历史悠久,多年矿山开采活动造成土地资源、水资源破坏,地面塌陷、崩塌、滑坡、泥石流等地质灾害,矸石堆污染及生态景观破坏等矿山环境地质问题,具有矿山环境地质问题类型多、危害严重、破坏性大、影响面广及分布集中等特点,严重地影响了斋堂地区的整体环境,威胁部分居民的生命财产安全,制约当地经济的健康有序发展。文章根据斋堂镇地区存在的诸多环境地质问题,提出通过相应的技术工作手段全面掌握区内各种环境地质问题隐患,通过制定科学合理的治理规划,采取预防措施、工程治理措施以及环境恢复措施等防治对策,最大限度地降低矿山环境地质问题可能造成的各种危害,逐步消除各种不安全隐患。 相似文献
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南京地质环境的基本特征和几个主要环境岩土工程问题 总被引：19，自引：2，他引：17
环境问题已成为全球热点,本文提出了关于人类社会面临的两类环境问题的概念,即污染和生态破坏及环境岩土工程问题,论述了南京市的地质环境特点,剖析了南京市的几个主要环境岩土工程问题。这对深化环境问题的认识,促进南京经济建设的发展,推动南京环境岩土工程问题瓣研究有积极意义。 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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岩土流变数值计算中一些问题的探讨 总被引：1，自引：0，他引：1
针对黏弹性组合模型中的两类参数,即拉压模量和拉压黏性系数以及剪切模量和剪切黏性系数在数值反分析和正分析应用中存在的概念模糊,以及转换不合理等一些问题,首先分析了这两类参数概念上的差异,接着从理论上建立了拉压模量和拉压黏性系数（常体积模量假设下广义Kelvin模型）到剪切模量和剪切黏性系数之间的转换关系,并通过一个算例,从正分析和参数反演两个角度,对这些问题进行了探讨,给出了产生这些问题的内在原因。最后,提出了解决这些问题的可行性措施,并指出这一解决措施也同样适用于其它假设情况。 相似文献
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To classify mine environmental geology problems, three schemes are advanced. The first one, according to mine type, is relatively
particular but with some problems repeated across mine types. The second one, according to the developmental stage of the
mines, describes different problems in the whole development and evolvement history of mines, however it is still large scale
and simplistic. The third one, based on the characteristics of the geological problems existing in the mines, is more easily
applied. The third scheme can also be used to analyze the characteristics of different types of mine environmental geology
problems. 相似文献
18.
P. Royis 《国际地质力学数值与分析法杂志》2006,30(3):255-269
The paper aims to establish the existence and uniqueness of the solution of some variational problems constituting the basis of finite element modellings encountered in mechanics and civil engineering. And indeed, by expanding to the approximate problems coming from the space discretization, such theoretical results contribute to strengthen the robustness of the modelling softwares and the quality of their numerical results. More particularly, three kinds of mixed variational problems involving rheological non‐linearities are considered here: the evolution problems of incompressible continua (solids or fluids) subjected to quasistatic small transformations, the problems of hydromechanical coupling and those coming from quasistatic large transformations of continua. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
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本文认为环境岩土工程问题与污染和生态破坏环境问题是等价的。所以，存在着两类同样重要的环境问题。关于两类环境问题的类型划分和内容，文中做了系统介绍和讨论。并着重对我国东部３个有重要意义的主要环境岩土工程问题进行了分析。 相似文献
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In modeling of many geomechanics problems such as underground openings, soil-foundation structure interaction problems, and in wave propagation problems through semi-infinite soil medium the soil is represented as a region of either infinite or semi-infinite extent. Numerical modeling of such problems using conventional finite elements involves a truncation of the far field in which the infinite boundary is terminated at a finite distance. In these problems, appropriate boundary conditions are introduced to approximate the solution of the infinite or semi-infinite boundaries as closely as possible. However, the task of positioning the finite boundary in conventional finite element discretization and the definition of the boundary and its conditions is very delicate and depends on the modeller's skill and intuition. Moreover, such a choice is influenced by the size of the domain to be discretized. Consequently, the dimensions of the global matrices and the time required for solution of the problem will increase considerably and also selection of the arbitrary location of truncated boundary may lead to erroneous result. In order to over come these problems, mapped infinite elements have been developed by earlier researchers (Simoni and Schrefier, 1987). In the present work the applicability of infinite element technique is examined for different geomechanics problems. A computer program INFEMEP is developed based on the conventional finite element and mapped infinite element technique. It is then validated using selected problems such as strip footing and circular footing. CPU time taken to obtain solutions using finite element approach and infinite element approach was estimated and presented to show the capability of coupled modeling in improving the computational efficiency. Mesh configurations of different sizes were used to explore the enhancement of both computational economy and solution accuracy achieved by incorporation of infinite elements to solve elastic and elasto-plastic problems in semi-infinite/finite domain as applied to geotechnical engineering. © Rapid Science Ltd. 1998 相似文献