共查询到20条相似文献,搜索用时 15 毫秒
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应用运筹学和计算机方法,在考虑多种优化原则条件下,提出了露天矿两分区开采采剥关系动态优化模型,并应用现代控制理论作出了分区开采竞争型采剥关系动态最优调控方法。 相似文献
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本文讨论了综合开采工艺的分类、不同开采工艺开发范围的划分、开拓运输系统和开采参数的配合、系统产量匹配,以及采用综合开采工艺的基本准则等问题。分析了该工艺在中国露天矿山开发中的重要性及其前景。 相似文献
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采场稳定性研究及采场结构尺寸优化 总被引:3,自引:0,他引:3
利用数值分析方法对铜录山矿露天转地下开采时的矿岩稳定性进行了研究,并对地下采场结构尺寸进行了优化,为安全高效地回采地下矿产资源提供了保证。 相似文献
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Flexer A 《Statistical methods in medical research》2000,9(4):395-413
An overview of data mining (DM) and its application to the analysis of DM and electroencephalography (EEG) is given by: (i) presenting a working definition of DM, (ii) motivating why EEG analysis is a challenging field of application for DM technology and (iii) by reviewing exemplary work on DM applied to EEG analysis. The current status of work on DM and EEG is discussed and some general conclusions are drawn. 相似文献
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The impacts of global warming on the environment, economy and society are presently receiving much attention by the international community. However, the extent to which anthropogenic factors are the main cause of global warming is still being debated. There are obviously large stakes associated with the validity of any theory since that will indicate what actions need to be taken to protect the human races only home—Earth. Most studies of global warming have investigated the rates and quantities of carbon dioxide emitted into the atmosphere since the beginning of the industrial revolution. In this paper, we focus on the earths carbon budget and the associated energy transfer between various components of the climate system. This research invokes some new concepts: (i) certain biochemical processes which strongly interact with geophysical processes in climate system; (ii) a hypothesis that internal processes in the oceans rather than in the atmosphere are at the center of global warming; (iii) chemical energy stored in biochemical processes can significantly affect ocean dynamics and therefore the climate system. Based on those concepts, we propose a new hypothesis for global warming. We also propose a revolutionary strategy to deal with global climate change and provide domestic energy security at the same time. Recent ocean exploration indicates that huge deposits of oceanic methane hydrate deposits exist on the seafloor on continental margins. Methane hydrate transforms into water and methane gas when it dissociates. So, this potentially could provide the United States with energy security if the technology for mining in the 200-mile EEZ is developed and is economically viable. Furthermore, methane hydrate is a relatively environmentally benign, clean fuel. Such technology would help industry reduce carbon dioxide emissions to the atmosphere, and thus reduce global warming by harnessing the energy from the deep sea. 相似文献
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石油地质开发勘探研究 总被引:1,自引:0,他引:1
随着人们生活水平的提高、经济的快速发展以及科学技术的进步,我国石油行业近几年也发展迅速。应该不断地提升我国的石油开采技术,提高出油的效率,实现石油地质勘探开采的高效率、开采出高质量石油的目标,以推动我国石油行业的快速发展。主要对我国石油地质类型、现状以及技术方面的创新做了相关的分析。 相似文献
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申桂英 《精细与专用化学品》2015,23(3)
介绍了采矿化学品,包括浮选剂、捕收剂、絮凝剂、萃取溶剂、助磨剂、除尘剂、爆破剂的主要品种及其消费量,还简介了全球主要采矿化学品生产公司。展望了采矿化学品未来的发展趋势。 相似文献
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针对广西高峰矿105号矿体高价值碎裂资源的开采技术条件,开发出一种新采矿方法,即无底柱分段分条连续采矿法,该方法根据矿体厚度的不同,采用多种矿块结构形式。在工艺上,先用分段空场法回采间柱,胶结充填后形成人工矿柱;矿房回采后,先在矿房底部进行高配比的胶结充填,其余空间采用低配比水泥砂浆充填或块石充填。生产实践表明该方法作业安全性好,生产能力高,贫化损失率低,适合于高价值破碎矿体的回采。 相似文献
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采矿方案的选择是一个多目标多因素的决策过程,而评判过程中定量指标和定性指标并存,针对某些指标带有模糊性和随机性等特点,采用模糊数学综合评价理论优选采矿方案的原理和步骤,确定评价指标体系中定量和定性指标隶属度矩阵以及权系数,并将该方法应用于某铁矿采矿方案评判的分析和计算. 相似文献
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随着磷矿市场供求关系的变化,磷矿石销售价格大幅度上涨,矿山企业原来确定的露天境界可根据市场因素进行综合优化,为此重新计算了适合于瓮福磷矿英坪露天矿Ⅱ号坑采区的新的经济合理剥采比,以调整和优化露天开采最终境界. 相似文献
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利用梯度浓度压力驯化法, 从厌氧反应器中筛选出对直接红28有具有良好脱色能力的混合菌群RR。在染料初始浓度为200mg/L, pH=7.0, 温度为35℃条件下, 经48h静止培养, 染料脱色率可达96.16%。进一步对其培养条件如pH值、温度、盐度、初始染料浓度等进行了脱色研究, 结果表明, 在pH=7、温度为45℃, 盐度为2mmol/L的情况下, 功能菌群脱色效果达到最佳。为了进一步适应工程无机条件, 筛选出以染料作为唯一氮源、碳源以及能量的功能菌群, 遂将培养基中葡萄糖去掉, 同样利用梯度浓度压力驯化法, 筛选出混合菌群RM, 并对其脱色性能及群落结构进行分析。混合菌群RM在染料初始浓度为50mg/L、温度为35℃、pH=7.0条件下, 48h后其脱色效率为20.05%。利用变性梯度凝胶电泳(DGGE)法, 对群落进行分析, 混合菌群RR主要为伯克霍尔德氏菌属(Burkholderia sp.)、链球菌属(Streptococcus)和克雷伯氏菌属(Klebsiella sp.), 菌群RM主要为伯克霍尔德氏菌属(Burkholderia sp.), 可见伯克霍尔德氏菌属菌株(Burkholderia sp.)可以适应工程无机环境, 并对直接红28存在一定的降解能力。 相似文献
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