Abstract

Standard and alternative methods of assessing the likelihood of coal oxidation and self-ignition in the bed are analyzed. These methods are based on the change in the petrographic, physicomechanical, chemical, and thermal properties of the coal on oxidation. Most of the methods are unsuitable for identification of the initial stage of coal oxidation. The onset of self-heating may be better determined on the basis of the surface properties of the coal: in particular, the hydrophobic–hydrophilic balance and the sorptional properties of internal surfaces. The extraction, transportation, and analysis of the coal sample from the bed must prevent contact with the air.

中文翻译：

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地下煤氧化和自燃可能性的评估：综述

摘要

分析了评估床中煤氧化和自燃可能性的标准方法和替代方法。这些方法基于煤在氧化作用下岩石学，物理力学，化学和热学性质的变化。大多数方法都不适合识别煤氧化的初始阶段。根据煤的表面特性，尤其是疏水-亲水平衡和内表面的吸附特性，可以更好地确定自热的开始。从床中提取，运输和分析煤样品必须防止与空气接触。