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- In the past more than 10 years,the large diameter longhole mining technology in China has been developed greatly,with a series of grand achievements. 近十多年来,我国大直径深孔采矿技术有了长足的发展,取得了一系列重要成果。
- Generally, the precision of longhole drilling now is fairly poor in China, which seriously restricts the development of the large diameter longhole mining technology. 目前,国内深孔凿岩的钻孔精度普遍较低,这一现状严重地制约大直径深孔采矿工艺的进一步发展。
- longhole mining technology 深孔采矿技术
- In recent years,severe rock fall occur in stopes with large-diameter longhole mining in Tonglushan Copper-iron Mine. 近年来,铜绿山铜铁矿深孔采场出现了严重的垮塌。
- The first use of 120m high-level large-diameter longhole mining in Anqing copper mine was made in china. 大直径深孔采矿法因为其高效率、低成本、安全性好在矿山得到了广泛的应用。
- Then the large-diameter longhole mining project which was employed in Tonglushan Copper-iron Mine is taken as an example. 大直径深孔采矿法因为其高效率、低成本、安全性好在矿山得到了广泛的应用。
- And this optimai range was uesd for the adjustment of air space lengthin the large-diameter longhole mining in Tonglushan mine. 文章论证了空气间隔长度存在一个最佳范围,并将其在铜录山矿大孔径深孔采矿时的空气间隔长度调整中加以应用。
- Therefore,it can greatly improve stability of stopes and help to extend the application of large-diameter longhole mining method to enhance qualities of drilling. 因此,提高凿岩质量,能够大大改善采场的稳定性,有利于继续推广应用大直径深孔采矿法。
- In the test of the large diameter longhole mining of No.91 orebody at Tongkeng mine,the stress and the displacement of wall rock at the stope drilling chamber were monitored. 在铜坑矿91号矿体大直径深孔采矿法试验过程中,对采场凿岩硐室围岩的应力状态和岩移进行了监测。
- Applying data mining technology to business will bring considerable return. 将数据开采技术应用于商业领域 ;产生的价值将是十分可观的 .
- Web data mining is the combination of data mining technology and Web. Web数据挖掘是数据挖掘技术与Web的结合。
- I would like to focus on bio-informatics, database and data mining technology. 我希望可以专注于生物信息学,数据库和数据挖掘技术。
- Computer forensics system based on data mining technology is researched. 本文对基于数据挖掘技术的计算机取证系统进行了探讨。
- To forecast slag weight of copper PS converter, it is proposed to extract some laws from lots of production data using the data mining technology. 摘要为实现铜转炉渣产出量的及时准确预报,提出应用数据挖掘技术从现场积累的大量生产数据中发掘相关规律。
- The Judgement for Mining Technology of Coal Conditionon the Base of Artificial Neural Network? 基于人工神经网络的煤层地质条件开采工艺性评价?
- Mining technology is one of the most export oriented branches of the German engineering industry. 采矿技术是德国工程行业最主要的出口业务之一。
- The application of Data Mining technology offers a new way for engineering analysis method amelioration. 数据挖掘技术的应用,为工程分析方法的改进提供了一种新的途径。
- Web mining means to find and extract information from web documents or service by using data mining technology. W eb挖掘就是利用数据挖掘技术从网络文档和服务中发现和提取信息。
- Secondly, this thesis studies the email data mining technology especially the email classification method. 其次,本文在对邮件数据挖掘技术进行介绍的基础了上,重点研究了电子邮件分类的技术,对电子邮件分类的过程,常用方法作了论述。