查询词典 mining engineering

Transforming opencast mining into underground mining ; blasting vibration ; safety monitoring ; backfilled gangue mass

露天转地下；爆破振动；安全监测；回填废石体

This paper points out main disadvantages of mining technology being used in small collieries and discusses how to adopt long room system to reform the current technology of mining.

论述了目前小煤矿开采技术存在的主要问题，探讨了采用长房式采煤法改革小煤矿开采的技术问题，此法适用于条件合适的小煤矿。

It exerts important significance on sci-tech history of mining and smelting and historical culture research, since this mine is one of a few rare mines in China that are qualified to restore the technique scenes of "decrepitating method" mining and "cupellation method" smelting.

公园拥有诸多采矿遗址，其中黄岩坑古矿硐规模最大，保存最完整，古代文献记载最丰富详实，是国内稀有的有条件恢复&烧爆法&采矿、&灰吹法&冶炼工艺场景的矿山，对矿冶科技史和历史文化研究具有重要意义。

Subsequently, clustering analysis in data mining is disserted, involving the methods and characteristics of clustering used in data mining and the methods for evaluating the clustering results, with emphasis on clustering the data with categorical attributes.

在此基础上对数挖掘中的聚类分析作以详细地论述，总结了数挖掘中聚类分析的方法和特点，并对聚类结果的评价方法进行了讨论，重点讨论了分类属性数据聚类，具体研究了k-modes 算法及其变形，并指出了它们的优缺点。

Then checking up mining practice, analyzing the observation and prediction data of dripping water amount and effusing water amount throughout mining. It is obvious from the research that the definitive width of waterproof pillar

研究结果表明，所确定的防水煤柱宽度满足开采要求，经济合理；同时，所采用的几种研究方法分析结果基本吻合，说明运用上述方法进行安全防水煤柱宽度的合理留设具有较强的可靠性，对类似矿山有一定的参考价值。

According to the actual parameters of coal mining face, the models of jet blower and air compressor are made out. Then locate the jet blower on mining face and air screen is produced by the jet blower to prevent the gob areas gas effusing to the top even angle.

然后在工作面具体安放射流风机，通过射流风机产生空气幕进行均压、阻断采空区瓦斯向上隅角涌出。

And third, rapid economic growth there, especially in mining, has given the Naxalites new targets for extorting cash, including foreign and state-owned mining companies.

第三，那些区域经济的迅速发展，特别是在采矿业，给了纳萨尔派抢夺外资和国有矿业公司钱财的新目标。

In the light of the hidden dangers existing in the back production of comprehensive mechanized coal mining face, this paper advances the scheme of reinforcing the fragmentized coal body around the geological structure to assure the smooth completion of the back production of coal mining face.

针对综放工作面回采过程中存在的安全隐患，提出采取对构造周围破碎煤体进行加固的方案，以保证工作面的顺利回采。

With the increasing of the bedrock thickness, pressurized pace was increased gradually, the roof caving and surface subsidence were gentled step by step. When the thickness of roof bedrock was larger than 60m, the bench subsidence was not occurred, and the value of surface subsidence was also small. The mining technology was proper and highly active, and the support programme was feasible. The roof was controlled effectively by the support system, and achieved safety mining.

随着基岩厚度的增加，顶板来压步距逐步增加，顶板垮落与地表下沉越来越缓和，基岩厚度大于60m时，顶板来压不再出现台阶下沉，地面下沉量较小；针对不同厚度基岩提出的采煤方法合理，高效，支护方案可行，能够有效控制顶板，实现安全生产。

Kernelled with the information mining, adopted the architecture which combined the seven bases (model base, integrated knowledge base, database, method base, text base, Web log base and multimedia base) and the double networks, the new "intelligence decision support system based on the information mining" is presented.

采用7库（模型库、综合知识库、数据库、方法库、文本库、日志库、多媒体库）与双网（Internet、Intranet）相结合的体系结构，以信息挖掘技术为核心，提出源于信息挖掘的新型智能化决策支持系统。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。