煤矿安全2024，Vol.55Issue(3)：111-119,9.DOI:10.13347/j.cnki.mkaq.20231607
火成岩侵蚀对煤自燃特性及其结构的影响
Effects of igneous rock erosion on spontaneous combustion properties and structure of coal
胡海峰 1杨英兵 2张运增 2陈明浩 1郭佳策3
作者信息
- 1. 国能神东煤炭集团有限责任公司,内蒙古 鄂尔多斯 017200
- 2. 国能神东煤炭集团有限责任公司,内蒙古 鄂尔多斯 017200||国家能源集团 矿井通风安全与职业健康防护研究中心,内蒙古 鄂尔多斯 017209
- 3. 中煤科工集团沈阳研究院有限公司,辽宁 抚顺 113122||煤矿安全技术国家重点实验室,辽宁 抚顺 113122
- 折叠
摘要
Abstract
In order to explore the influence law of igneous rock erosion on coal spontaneous combustion characteristics and structure,taking primary coal and igneous rock eroded coal in the same coal face of Shanxi Mine and Liaoning Mine as the samples,the oxida-tion characteristics,the limit parameters of the spontaneous combustion,the content of the active functional group and pore structure characteristics of coal were analyzed from macro and micro perspectives by temperature programmed test,FT-IR experiment,low temperature nitrogen adsorption experiment and mercury injection experiment respectively.The results of temperature programmed test showed that igneous rock erosion increased the spontaneous combustion risk of coal,igneous rock erosion could enhance the gas circulation inside the coal body,which is conducive to the oxidation reaction between oxygen and active groups inside the coal body,and the coal body of the igneous erosion had higher oxidizing activity.In addition,igneous rock erosion altered the occurrence condi-tions of coal seams,increased the difficulty of coal seams mining and the intensity of wind leakage in the mining airspace,prolonged the oxidation time of the residual coal in the"oxidized heating zone"in goaf,thus increasing the risk of spontaneous combustion of coal from the level of external influencing factors.The erosion of igneous rock changes the structure of coal itself and the external environmental factors of coal spontaneous combustion,which intensifies the spontaneous combustion risk of the eroded coal seam.关键词
火成岩侵蚀/煤自燃/标志气体/矿井火灾/自燃极限参数/孔隙结构/官能团Key words
igneous rock erosion/coal spontaneous combustion/indicator gas/mine fire/spontaneous combustion limit parameter/pore structure/functional group分类
矿业与冶金引用本文复制引用
胡海峰,杨英兵,张运增,陈明浩,郭佳策..火成岩侵蚀对煤自燃特性及其结构的影响[J].煤矿安全,2024,55(3):111-119,9.
