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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >A potential method of containing rockburst damage and enhancing safety using a sacrificial layer
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A potential method of containing rockburst damage and enhancing safety using a sacrificial layer

机译：使用牺牲层抑制岩爆破坏并增强安全性的潜在方法

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摘要

Rockbursts continue to be a scourge in the mining industry, being responsible for accidents and damage to mining excavations. Although the problem has been present for more than a century, and although much research has been carried out, a solution is still elusive. Determination of, firstly, the demand on the support system imposed in the rockburst and, secondly, the capacity of the support system, cannot be carried out with any confidence, and therefore rockburst support cannot be designed using a conventional design approach. In contrast with the conventional approach, observations of rockburst damage in a mine have revealed a possible alternative approach to rockburst support - sacrificial support. It was observed, in rockburst events, that a support system consisting of concrete panels restrained by grouted cables was destroyed, and the concrete panels were ejected. However, the rock behind the panels remained apparently undamaged and hi place. This behaviour reignited the concept of sacrificial support, conceived more than 20 years ago, and which is described in this paper. The remedial solution implemented on the mine, involving cables wrapped over the panels and retained by grouting into boreholes, has been subjected to rockburst loading and has confirmed the validity of the sacrificial support concept. The concept of sacrificial support may be controversial, but is deliberately presented here with the aim of generating discussions and contributions, and with the ultimate aim of improving safety and reducing rockburst damage in mines.
机译：岩爆一直是采矿业的祸害，对事故和采矿挖掘造成的破坏负责。尽管这个问题已经存在了一个多世纪，并且尽管已经进行了很多研究，但是解决方案仍然难以捉摸。首先，不能确定地确定对岩爆中的支撑系统的需求，其次，不能确定支撑系统的能力，因此，不能使用传统的设计方法来设计岩爆支撑。与传统方法相反，对矿山中岩爆破坏的观察表明，岩爆支撑的一种可能替代方法是牺牲支撑。观察到，在岩爆事件中，一个由受注浆电缆约束的混凝土板组成的支撑系统被破坏，混凝土板被弹出。但是，面板后面的岩石显然没有受到损坏且位置很高。这种行为重新点燃了20年前构思的牺牲支持的概念，本文对此进行了描述。在矿井上实施的补救性解决方案，包括将电缆包裹在面板上并通过灌浆固定在钻孔中，已经经受了爆炸冲击，并证实了牺牲性支持概念的有效性。牺牲支持的概念可能是有争议的，但在此故意提出，目的是引起讨论和贡献，最终目的是提高安全性并减少矿山的岩爆破坏。

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