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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >The design of stable pillars in the Bushveld Complex mines: a problem solved?
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The design of stable pillars in the Bushveld Complex mines: a problem solved?

机译:Bushveld Complex矿山中稳定支柱的设计:解决了问题吗?

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摘要

This paper gives an overview of the difficulties associated with determining the strength of hard-rock pillars. Although a number of pillar design tools are available, pillar collapses still occur. Recent examples of large scale pillar collapses in South Africa suggest that these were caused by weak partings that traversed the pillars, currently two different methods are used to determine the strength of pillars, namely, empirical equations derived from back analyses of failed and stable cases, and numerical modelling tools using appropriate failure criteria. The paper illustrates that both techniques have their limitations and additional work is required to obtain a better understanding of pillar strength.
机译:本文概述了与确定硬岩支柱强度有关的困难。尽管可以使用多种支柱设计工具,但支柱坍塌仍然会发生。最近在南非发生的大规模柱子倒塌的例子表明,这是由于穿过柱子的薄弱部分而引起的,目前,有两种不同的方法用于确定柱子的强度,即从对失败和稳定的情况进行反向分析得出的经验方程式,使用适当的失效准则的数值建模工具。本文说明了这两种技术都有其局限性,需要做更多的工作才能更好地了解支柱的强度。

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