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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Modelling coal pillar stability from mine survey plans in a geographic information system
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Modelling coal pillar stability from mine survey plans in a geographic information system

机译：地理信息系统中矿井调查计划建模煤柱稳定性

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摘要

A practical method for analysing the individual stability of large numbers of pillars in bord-and-pillar workings based on mine survey plans is outlined. The procedure aims at modelling pillar safety factors and failure probabilities under tributary area loading assumption in a geographic information system. The mining dimensions and geometries, as available from mine survey plans, are processed in a quasi-3D mine model. Analytical solutions are implemented in the model so as to predict the stability of each individual pillar and its time-dependent deterioration due to scaling. Thus a dynamic analysis is achieved, which gives a good estimate of the risk associated with abandoned mine sites over time. The results can be projected back onto mine survey plans in order to provide an overview of the areal distribution of stability and instability in the underground panels. The limitations and accuracy of the model are discussed. The proposed pillar stability model is applied to real mining situations, including a case of pillar collapse, so as to verify the validity of the technique.
机译：概述了基于矿山调查计划的BORD和支柱运作中大量柱子的个体稳定性的一种实用方法。该程序旨在根据在地理信息系统中的支流面积负载假设下建模支柱安全因素和失效概率。矿山调查计划可用的采矿尺寸和几何形状在Quasi-3D矿山模型中处理。分析解决方案在模型中实施，以预测每个单独的柱子的稳定性及其由于缩放而导致的时间依赖性恶化。因此，实现了一种动态分析，这给出了随着时间的推移与废弃的矿部位相关的风险的良好估计。结果可以投影回矿区调查计划，以便在地下面板中概述稳定性和不稳定性的面积分布。讨论了模型的局限性和准确性。建议的支柱稳定性模型适用于实际采矿情况，包括柱塌陷的情况，以验证该技术的有效性。

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