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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Prevention of spontaneous combustion in coal drifts using a lining material: a case study of the Tuncbilek Omerler underground mine, Turkey
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Prevention of spontaneous combustion in coal drifts using a lining material: a case study of the Tuncbilek Omerler underground mine, Turkey

机译：使用衬里材料预防煤漂移中的自发燃烧：土耳其屯捷欧利勒地下矿井案例研究

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摘要

The spontaneous combustion of coal in underground mines is a vital subject for miners. Every year, many coal fire incidents are caused by spontaneous combustion.In this study, a lining material for coating the coal surface to prevent coal fires was designed in laboratory conditions. Three kinds of gypsum as well as plaster, satin plaster, moulding plaster, hydrated lime, cement, and fly ash were used to prepare different types of mixtures.Sixteen different mixtures were prepared and tested. Only plaster plus water and cement plus fly ash plus water gave satisfactory results in the laboratory tests, and these mixtures were then applied on a small scale in an underground coal mine. Observations showed that plaster reacted with pyrite, increasing the porosity of the lining material upon exposure to water, which is ubiquitous in underground mines. However, a 7-8 mm thick application of the cement plus fly ash plus water mixture proved impermeable to air and maintained its structure in underground mine conditions. The cement and fly ash mixture was then applied to some hazardous areas on a larger scale. When the investigations were completed, the lining material was applied in new development drifts that had been driven into the coal at the Omerler underground mine.
机译：地下矿山煤炭的自发燃烧是矿工的重要主题。每年，许多煤火事件都是由自发燃烧引起的。本研究中，设计了一种用于涂层煤表面以防止煤火的衬里材料。使用三种石膏以及石膏，缎面膏药，模塑石膏，水合石灰，水泥和飞灰来制备不同类型的混合物。制备和测试了不同的混合物。只有石膏加水和水泥加粉煤灰加水在实验室试验中获得了令人满意的结果，然后在地下煤矿的小规模上施加这些混合物。观察结果表明，石膏与黄铁矿反应，在暴露于水时增加衬里材料的孔隙率，这在地下矿井中普遍存在。然而，7-8毫米厚的水泥加粉煤灰加水混合物被证明是不可渗透的空气，并在地下矿井条件下保持其结构。然后将水泥和粉煤灰混合物施加到较大尺度上的某些危险区域。当调查完成后，衬里材料适用于在Omerler地下矿井中被驱逐到煤炭的新开发漂移中。

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