荆各庄矿复采与原生煤层自燃特性分析

发布时间：2018-04-26 23:35

本文选题：复采 + 自燃特性　；参考：《煤矿安全》2017年10期

【摘要】：为了研究荆各庄矿复采与原生煤层工作面的自然发火规律,采用元素分析、红外光谱分析和程序升温实验,对荆各庄矿的1090与3320工作面的复采区域与原生煤样进行自燃特性实验研究。研究表明:由于早期开采机器的切割或者外力作用,导致煤分子链断裂,产生大量甲基、亚甲基,同时煤样提前与氧有了接触,形成了很多羟基以及新的含氧官能团,导致复采煤样羟基和含氧官能团增多,自燃倾向性变强,宏观表现为复采煤样CO释放量以及O_2消耗量均要高于原生煤样,并且复采特征温度也要早于原生煤样。说明复采煤样氧化性变强,更易自燃。
[Abstract]:In order to study the rules of spontaneous combustion in Jinggezhuang coal mining and primary coal face, elemental analysis, infrared spectrum analysis and temperature programmed test were used. The spontaneous combustion characteristics of 1090 and 3320 coal faces in Jinggezhuang coal mine were studied experimentally. The results show that because of the cutting or external force of the early mining machine, the coal molecular chain breaks, producing a large amount of methyl and methylene, and at the same time the coal sample is in contact with oxygen in advance, forming many hydroxyl groups and new oxygen-containing functional groups. As a result, the hydroxyl groups and oxygen-containing functional groups in the remining samples increased, and the spontaneous combustion tendency became stronger. The macroscopical manifestation was that CO emission and O _ 2 consumption of the remining samples were higher than those of the original coal samples, and the characteristic temperature of remining was earlier than that of the original coal samples. It shows that the oxidizing property of the coal sample in complex mining is stronger, and it is easier to self-ignite.
【作者单位】：华北理工大学矿业学院;河北省矿业开发与安全技术实验室;开滦(集团)有限责任公司荆各庄矿业分公司;
【基金】：国家自然科学基金资助项目(51474086) 河北省自然科学基金资助项目(E2014209138) 华北理工大学培育基金资助项目(GP201511)
【分类号】：TD752.2

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