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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >An investigation into recharge in South African underground collieries
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An investigation into recharge in South African underground collieries

机译：南非地下煤矿补给调查

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摘要

Coalmining has been ongoing in the Mpumalanga province of South Africa since 1870 (Figure 1). Initially, all the mines were in the shallower areas around the town of Witbank. Bord and pillar mining was used throughout. This is an underground coal extraction procedure, through which coal pillars of sufficient size and frequency are left in the mine to keep the roof of the mine from collapsing. With the aid of research conducted by the Chamber of Minesi4, pillars were designed on a scientific basis. Pillars before this date were known to have collapsed, sometimes with catastrophic consequences. Once the economically mineable coal has been removed, mines close down and are left to fill up with water. Most of this water will eventually decant and/or seep into the adjacent strata and environment, thus polluting aquifers and rivers.
机译：自1870年以来，南非的姆普马兰加省一直在进行煤矿开采（图1）。最初，所有地雷都位于威特班克镇附近的较浅地区。整个过程中都使用了无聊和支柱采矿。这是一个地下采煤程序，通过该程序，将足够大小和频率的煤柱留在矿井中，以防止矿井瓦顶塌陷。借助Minesi商会4的研究，在科学的基础上设计了支柱。已知此日期之前的柱子已经坍塌，有时会造成灾难性的后果。一旦去除了经济上可开采的煤炭，煤矿便关闭，并注满水。这些水的大部分最终将倾析和/或渗入相邻的地层和环境，从而污染含水层和河流。

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