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991.
992.
保护煤炭资源 建设小康社会 总被引:1,自引:0,他引:1
煤炭是我国主要能源。无论过去、现在、还是未来,煤炭在我国能源市场的重要地位都不可动摇。煤炭资源安全牵系着国家能源战略安全,直接影响到国民经济的可持续发展。新世纪,在全球性能源危机面前,中国实行全面的节能增效与减灾政策,是保障国家能源安全的必然选择。影响煤炭资源安全的因素,存在于煤炭工业的各个环节,对资源的科学管理,是减灾保煤,降耗增效的关键。 相似文献
993.
在岩溶地区公路建设中,受复杂地形地貌的影响,将不可避免地产生占用耕地、破坏植被等环境问题,使得岩溶地区本来就脆弱的生态环境日趋恶化。因此,合理利用土地资源,维护生态平衡,将成为岩溶地区公路建设必须考虑的重要议题。在文中结合岩溶地区公路建设的实际情况,利用先进的GIS技术,针对公路建设的不同阶段,分别提出了各种不同的技术手段和工程措施,既指导了岩溶地区的公路建设.也保护了有限的土地资源。 相似文献
994.
WU Qiang LI Duo DI Zhiqiang MIAO Ying ZHAO Suqi & GUO Qiwen . Resource Exploitation Engineering College CUMT Beijing China . Shijiazhuang Engineering College University of Economics Shijiazhuang China . Shenyang Institute of Geology Mineral Resources Shenyang China . State Adminstration of Coal Mine Safety Beijing China . Zhengzhou Coal Mine Company 《中国科学D辑(英文版)》2005,48(10)
It is forecasted that before the 2050s, coal would still make up 50%-60% of once energy constitution in China, but unfortunately, in most part of our coal districts and peripheral regions, we generally face the contradiction and conflict among the threat of water hazard, shortage of water resource and environmental protection, which are becoming more and more serious especially with a gradual increase in mining depth of the shaft and recovery of lower coal beds. The concrete expression is as f… 相似文献
995.
Shannon O’Lear 《GeoJournal》2005,64(4):297-306
The objective of this paper is to engage constructively with literature on armed conflict and resources in order to draw attention
both to assumptions that hinder a more accurate or useful understanding of natural resources and their role in territorial
conflict as well as to aspects of this field of research that merit further work. In much of the literature on resource conflict,
territorial aspects are either implicitly or explicitly tied to resource conflict largely through the assumption that the
value of territory is intrinsic. Little of the literature attempts to advance theory, specifically, either on the particular
role of resources or on the meaning and objectives of conflict beyond a one-dimensional objective of maintaining or securing
control of territory. The paper considers themes of resource scarcity and resource abundance in conflict. A third section
focuses on an analysis both of natural resource databases and of conflict databases (both international and civil) which emphasizes
problematic results of blending these databases to demonstrate correlations.
UIUC territorial conflict management workshop 相似文献
996.
汉中地区主要发育宁陕与汉南2个大型岩体,各具不同的特征与矿产资源。晚元古代汉南 花岗岩杂岩体位于扬子地台北缘,其内部赋存金、钛等金属矿产。中生代宁陕花岗岩位于南秦岭地 槽区,多种非金属矿产在其两侧。相关矿产开发利用前景乐观,但要注意四点:①找金与找宝石开 发利用并重;②寻找非金属矿与伴生矿(元素)并行;③非金属矿产开发与工艺研究并重;④综合 利用与评价统一。 相似文献
997.
Julien Vaudan Aurèle Parriaux Laurent Tacher Gianni della Valle 《Eclogae Geologicae Helvetiae》2005,98(3):371-383
The alpine valley of the Haute-Sarine is on several accounts representative of the alluvial aquifers of mountain by its very
environment and its hydrogeologic characteristics. The investigations and the analysis carried out within the framework of
this study enabled us to improve knowledge on the Quaternary filling of the valley and to highlight the preferential supplies
of the aquifer by infiltration of the river and precipitations and also by the underground contributions of evaporitic karsts.
We also could note the opulence of groundwater resources of the Haute-Sarine both from the qualitative and the quantitative
points of view. The knowledge of these typical characteristics of alluvial aquifers of high altitude allowed finally the development
of a concept of management and protection of groundwater resources that falls under a sustainable development policy of the
groundwater storage in the alpine areas.
Manuscrit re?u le 4 février 2003 Révision acceptée le 30 mars 2005 相似文献
998.
广州市地铁沿线地下商业空间的利用对比分析 总被引:4,自引:0,他引:4
选取广州市与地铁站出口相连的天浚和流行前线地下商业街为研究对象,运用市场研究中消费者行为分析和实地考察的方法,分别对二者的特征、消费者属性进行比较并对地下商业街与消费者属性之间的关系进行分析,得出4点结论:(1)区位条件是影响零售业布局的关键因素;(2)历史悠久、建筑风格独特、服务功能多样、基础设施完备、环境舒适、管理有序的商业街更易受顾客青睐;(3)不同的消费群体在对商业街的选择上表现出不同的偏好;(4)地铁将带动快速、简易的消费模式。 相似文献
999.
A recently published study has shown that small-scale geologic map data can reproduce mineral assessments made with considerably
larger scale data. This result contradicts conventional wisdom about the importance of scale in mineral exploration, at least
for regional studies. In order to formally investigate aspects of scale, a weights-of-evidence analysis using known gold occurrences
and deposits in the Central Lapland Greenstone Belt of Finland as training sites provided a test of the predictive power of
the aeromagnetic data. These orogenic-mesothermal-type gold occurrences and deposits have strong lithologic and structural
controls associated with long (up to several kilometers), narrow (up to hundreds of meters) hydrothermal alteration zones
with associated magnetic lows. The aeromagnetic data were processed using conventional geophysical methods of successive upward
continuation simulating terrane clearance or ‘flight height’ from the original 30 m to an artificial 2000 m. The analyses
show, as expected, that the predictive power of aeromagnetic data, as measured by the weights-of-evidence contrast, decreases
with increasing flight height. Interestingly, the Moran autocorrelation of aeromagnetic data representing differing flight
height, that is spatial scales, decreases with decreasing resolution of source data. The Moran autocorrelation coefficient
scems to be another measure of the quality of the aeromagnetic data for predicting exploration targets. 相似文献
1000.