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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >An integrated risk management approach for underground coal pillar extraction in South Africa
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An integrated risk management approach for underground coal pillar extraction in South Africa

机译：南非地下煤炭支柱开采的综合风险管理方法

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Analysis for pillar extraction potential (A-PEP) is an intelligent tool, which could be used as a preliminary output indicator when considering the secondary extraction of regional support pillars in the Witbank and Highveld coalfields of Sooth Africa. The safe and economic extraction of underground coal pillars is of paramount significance and importance to the South African coalmining industry to ensure continuity of supply of this fossil fuel. Filar extraction practices in South Africa have been responsible a significant proportion of safety and fatality statistics in relation to its relative output (less than 5 per cent of total South African coal production) and, as a result, research was undertaken in local pillar extraction operations and extended to similar operations in New Soath Wales, Australia to assess a way forward for pillar extraction In South Africa. It was found that, although little in the way of new technologies has emerged in this field in the recent past, significant contributions could be made in the field of risk analysis to obtain a generic design methodology for pillar extraction in South Africa. The resultant A-PEP tool to assess pillar extraction potential is based on certain physical, risk and economic factors, which combine to indicate operational success in terms of economic, health and safety attributes. At the time of A-PEP's development there was a lack of operating underground coal pillar extraction operations, which made it difficult to validate its applicability. Since then, however, A-PEP has been successfully tested and validated against two unique underground coal pillar operations, which is the discussion of this paper. One operation is situated in the Witbank coalfield and is extracting pillars, which are 20 years old and at a depth of 80 metres below surface, while the other operation is situated in the Highveld coalfield-which is extracting a month-old-pillars underneath a massive dolerite sill at a depth of 220 metres. A-PEP has shown that its predictive nature is consistent the workings at both operations, irrespective of their unique conditions, and as such it can be successfully used as a mine planning tool. The A-PEP mine planning tool thus represents a positive step toward an integrated approach to underground coal pillar extraction when considering legal and operational aspects, which coald form the basis for legislative guidelines when considering the future of pillar extraction in South Africa.
机译：煤层开采潜力分析（A-PEP）是一种智能工具，当考虑对Sooth Africa的Witbank和Highveld煤田进行区域支撑煤层的二次开采时，可以用作初步产出指标。安全和经济地开采地下煤柱对南非煤矿业至关重要，以确保这种化石燃料的连续供应。相对于其相对产量，南非的丝虫采摘方法在安全和死亡统计中占了很大比例（不到南非煤炭总产量的5％），因此，对当地的支柱采掘业进行了研究。并扩展到澳大利亚新索斯威尔士州的类似业务，以评估在南非开采支柱的前进之路。结果发现，尽管近来在该领域中很少出现新技术的方式，但是在风险分析领域可以做出重大贡献，以获得用于南非的柱提取的通用设计方法。由此产生的评估支柱开采潜力的A-PEP工具是基于某些物理，风险和经济因素的，这些因素结合起来可以根据经济，健康和安全属性指示运营成功。在A-PEP的发展时期，由于缺乏地下煤柱开采作业，因此难以验证其适用性。但是从那以后，A-PEP已针对两个独特的地下煤柱作业进行了成功的测试和验证，这就是本文的讨论内容。一个作业位于威特班克（Witbank）煤田中，正在开采具有20年历史且在地表以下80米深度的柱子，而另一个作业位于Highveld煤田中，该工厂正在开采一个月大的柱子。深度达220米的巨大白云石窗台。 A-PEP已表明，其预测性质与两个作业的工作情况都是一致的，而不管它们的独特条件如何，因此它可以成功地用作矿山计划工具。因此，在考虑法律和运营方面时，A-PEP矿山规划工具代表了朝着采用一体化方法进行地下煤柱开采的积极一步，当考虑到南非的煤柱开采的未来时，这些方法构成了立法指南的基础。

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