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首页> 外文会议>International mine management 2012 >Successful Risk Management Through Project Life Cycle for Removal of the Crown Pillar at the Marvel Loch Underground Mine
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Successful Risk Management Through Project Life Cycle for Removal of the Crown Pillar at the Marvel Loch Underground Mine

机译：通过项目生命周期成功进行风险管理，以拆除Marvel Loch地下矿山的顶梁

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St Barbara's Marvel Loch operations have successfully used longhole open stoping as the primary mining method for a number of years. A transition to Core and Shell mining was implemented in 2009 to recover substantial ore grade resources remaining in sill and rib pillars. The transition to core and shell for the Exhibition lode required continuous waste filling of created voids and thus the removal of the crown pillar at the base of the Exhibition pit by blasting. Access to the top of pillar was denied as the pit was partially rock filled with waste rock from underground development. Beyond the technical challenges of the blasting project, a simple and transparent risk management process was developed to ensure appropriate controls and mitigating strategies were in place to minimise risk to personnel during the pillar removal process. Although failure of the crown pillar was anticipated but with the actual timing unknown, on 25 December 2011 the crown pillar yielded during normal mine operations. Engineered and isolation controls in place at the time were of a sufficiently high standard to ensure limited exposure of the underground workforce and minimal damage to mine infrastructure. Successful risk management through implementation of appropriate controls during the project lifecycle of two years and three months proved to be fundamental to the safe removal of the crown pillar.
机译：数年来，圣芭芭拉（St Barbara）的Marvel Loch作业已成功地将长孔露天采矿用作主要开采方法。 2009年实施了向核心和壳牌采矿的过渡，以回收门槛和肋骨支柱中剩余的大量矿石品位资源。过渡到展览铁矿石的核和壳需要连续填充产生的空隙的废料，因此需要通过喷砂清除展览坑底部的冠柱。由于该坑的部分岩石充满了地下开发的废石，因此无法进入柱顶。除了爆破项目的技术挑战之外，还开发了一个简单而透明的风险管理流程，以确保制定适当的控制措施和缓解策略，以最大程度地减少拆除立柱期间人员受到的风险。尽管预计顶冠会发生故障，但实际时间未知，但2011年12月25日，顶冠在正常矿山运营期间屈服了。当时采用的工程控制和隔离控制具有足够高的标准，以确保地下劳动力的有限暴露以及对矿山基础设施的损害最小。在两年零三个月的项目生命周期中，通过实施适当的控制措施来成功进行风险管理，对于安全移除树冠支柱至关重要。

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  • 来源
    《International mine management 2012》|2012年|125-134|共10页
  • 会议地点 Melbourne(AU)
  • 作者

    S C Barrie;

  • 作者单位

    Manager Mining, St Barbara Limited, Marvel Loch Operations;

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  • 原文格式 PDF
  • 正文语种 eng
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