开采

This study provides a scientific method about studying the gas content of the coal seam unmined and provides the basic data about the safe mining.

这为未开采煤层瓦斯含量的研究提供了科学方法，并为该煤矿的安全开采提供了基础资料。

In order to solve the safe mining question of the coal seam unmined which is in the second level in Xiaonan coal mine, took the No. 14 coal seam as an example and analysed the geologic agent systematically which influence the gas hosting.

为了解决晓南矿二水平未开采煤层的安全开采问题，以14号煤层为例，系统地分析了影响瓦斯赋存的地质因素。

The study of gas content and influencing factor of the coal seam unmined is an important fundamental research. We take the 14(superscript #) coal seam of Xiaonan coal mine of Tiefa basin as an example and analyse the geologic agent systematically which influences the gas content.

未开采煤层瓦斯含量及影响因素研究，是煤矿安全生产的重要基础研究工作，以铁法盆地晓南矿未开采的14煤层为例，系统分析了影响瓦斯含量的地质因素。

The geologic agent affecting the gas occurrence of the coal seam unmined in Xiaonan coal mine;2. We take the 14# coal seam of Xiaonan coal mine of Tiefa basin as an example and analyse the geologic agent systematically which influences the gas content.

未开采煤层瓦斯含量及影响因素研究，是煤矿安全生产的重要基础研究工作，以铁法盆地晓南矿未开采的14#煤层为例，系统分析了影响瓦斯含量的地质因素。

One has proved that the viewpoint that the horizontal sidetrack is the most important technology for exploiting "large scale"unswept remaining oil in mature oilfields from three aspects.They are:(1) the horizontal sidetrack is the main technology for exploiting primary rich areas of"large scale"unswept remaining oil in mature oilfields;(2) the horizontal sidetrack can hit any rich area of"large scale"unswept remaining oil in reservoirs;(3) the cost of the horizontal sidetrack is more low in contrast with the vertical well and the conventional horizontal well.

从三方面论证了侧钻水平井是开采成熟油田&大尺度&未波及剩余油最重要的技术这一观点：①侧钻水平井是开采成熟油田&大尺度&未波及剩余油主要富集区的主要技术；②侧钻水平井可钻达油层中任何部位的&大尺度&未波及剩余油富集区；③侧钻水平井比钻垂直井和常规水平井费用低得多、更加经济。

Then a wasteless mining design for a large underground copper mine is discussed.

介绍了我国有色矿山实现无废开采的途径以及某一大型矿山的无废开采设计。

After that, the author, based on the wasteless mining theories and his research experience, put forward creatively a new method to design and appraise for the wasteless mining, in which the modern applicable visualization technique are applied.

在采矿方案优选方面，发展应用模糊数学与层次分析法的组合决策优化方法对无废开采方案优选的指标体系、权值的分析处理与系统进行了综合评判，并建立了系统实用的方案优化选择数学模型，以获得最佳、合理的无废开采方案。

This paper discussed the recent science and technology at the frontier for exploitation of underground metal resource s: digital control of mining environment, wasteless mining, ocean mining and coping with threat of rockburst in deep mining, that are of great importance to the development of mining c.

文章对地下金属资源开发的数控采矿环境、实现无废开采、海洋采矿、应对深井开采的岩爆威胁等科技前沿做了初步探讨，阐明其对采矿学科发展的重要意

A self-contained forecast model of mining subsidence is obtained,that is,the subsidence of surface is equal to direct model of mining plus additional concretion subsidence model plus addit.

通过研究获得了一个完备的开采沉陷预计模型，即地表沉陷=开采直接影响模型+附加固结沉陷模型+附加流动沉陷模型；获得了地表裂缝深度和宽度的估算公式。

Geopolitical tensions, particularly surrounding Iran, also continue to boost oil prices. Traders were digesting reported comments from the commander of Iran's Revolutionary Guards, who warned that if his country is attacked, Tehran would strike back by barraging Israel with missiles.

美国国会会不会将长达27年的禁采石油令解除，这涉及民主、共和两党及环保人士的矛盾。1990年的民意调查反映，71%的被访美国人反对开采以保护环境，只有19%的被访者赞成开采，到2007年，这个反对、赞成的比例，已变成49%比42%。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。