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首页> 外文学位 >Open stope hangingwall design based on general and detailed data collection in rock masses with unfavourable hangingwall conditions.
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Open stope hangingwall design based on general and detailed data collection in rock masses with unfavourable hangingwall conditions.

机译：基于常规和详细数据收集的不利顶壁条件下的岩体的露天采场顶壁设计。

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摘要

This thesis presents new methods to improve open stope hangingwall (HW) design based on knowledge gained from site visits, observations, and data collection at underground mines in Canada, Australia, and Kazakhstan. The data for analysis was collected during 2 months of research at the Hudson Bay Mining and Smelting Ltd. Callinan Mine in Flin Flon, Manitoba, a few trips to the Cameco Rabbit Lake mine in northern Saskatchewan, and 3 years of research and employment at the Xstrata Zinc George Fisher mine near Mount Isa, Queensland, Australia. Other sites visited, where substantial stope stability knowledge was accessed include the Inco Thompson mines in northern Manitoba; BHP Cannington mine, Xstrata Zinc Lead Mine, and Xstrata Copper Enterprise Mine, in Queensland, Australia; and the Kazzinc Maleevskiy Mine in north-eastern Kazakhstan.;An observational approach was used for the formulation of the new stope design methodology. To improve mine performance by reducing and/or controlling the HW rock from diluting the ore with non-economic material, the individual stope design methodology included creating vertical HWs, leaving ore skins or chocks where appropriate, and rock mass management. The work contributed to a reduction in annual dilution from 14.4% (2003) to 6.3% (2005), an increase in zinc grade from 7.4% to 8.7%, and increasing production tonnes from 2.1 to 2.6 Mt (Capes et al., 2006).;An improved understanding of stability and design of open stope HWs was developed based on: (1) Three years of data collection from various rock masses and mining geometries to develop new sets of design lines for an existing HW stability assessment method; (2) The consideration of various scales of domains to examine HW rock mass behaviour and development of a new HW stability assessment method; (3) The investigation of the HW failure mechanism using analytical and numerical methods; (4) An examination of the effects of stress, undercutting, faulting, and time on stope HW stability through the presentation of observations and case histories; and (5) Innovative stope design techniques to manage predicted stope HW instability.
机译：本文基于在加拿大，澳大利亚和哈萨克斯坦的地下矿山进行实地考察，观察和收集数据所获得的知识，提出了改进露天采场吊顶（HW）设计的新方法。分析数据是在马尼托巴省Flin Flon的Hudson Bay采矿和冶炼有限公司的两个月研究期间收集的，几次前往萨斯喀彻温省北部的Cameco Rabbit Lake矿山，并在该矿进行了3年的研究和就业Xstrata锌乔治·费舍尔矿在澳大利亚昆士兰州伊萨山附近。所访问的其他可获取大量采场稳定性知识的站点包括位于曼尼托巴北部的Inco Thompson矿；必和必拓坎宁顿矿，Xstrata锌铅矿和Xstrata铜企业矿，位于澳大利亚昆士兰州；哈萨克斯坦东北部的Kazzinc Maleevskiy矿。采用观测方法来制定新的采场设计方法。为了通过减少和/或控制非经济材料稀释矿石中的HW岩石来提高矿山性能，单独的采场设计方法包括创建垂直HW，在合适的地方留有矿皮或塞块以及管理岩体。这项工作使年度稀释度从14.4％（2003）降低到6.3％（2005），锌品位从7.4％增加到8.7％，产量从2.1吨增加到2.6吨（Capes等，2006）。 ）;基于以下方面对露天采场硬件的稳定性和设计有了更深入的了解：（1）三年来从各种岩体和采矿几何体收集数据，为现有的硬件稳定性评估方法开发了新的设计线; （2）考虑各种规模的区域以检查硬岩岩体行为，并开发一种新的硬岩稳定性评估方法； （3）运用分析和数值方法对硬件故障机理进行研究； （4）通过观察结果和病历，检查应力，底切，断层和时间对采场硬体稳定性的影响； （5）创新的采场设计技术，以管理预计的采场硬件不稳定性。

著录项

  • 作者

    Capes, Geoffrey William.;

  • 作者单位

    The University of Saskatchewan (Canada).;

  • 授予单位 The University of Saskatchewan (Canada).;
  • 学科 Geotechnology.;Engineering Mining.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 300 p.
  • 总页数 300
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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