黑龙江科技大学学报2025，Vol.35Issue(1)：6-13,8.DOI:10.3969/j.issn.2095-7262.2025.01.002
硬度对采空区遗煤氧化速率的影响
Influence of hardness on oxidation rate of residual coal in goaf
摘要
Abstract
This paper intends to investigate the effect of the hardness of the coal seam on the particle size and the oxygen consumption rate of the residual coal in goal.The study is performed by fitting the re-lationship equation between the oxygen consumption rate of the coal samples and the temperature with dif-ferent particle sizes by the programmed temperature-raising oxidation test of the coal and obtaining the re-lationship curves of the pre-exponetial factor and the average particle size,conducting the experiments for the determination of the firmness coefficient to obtain the distribution of the firmness coefficient and the particle size of the coal samples impacted,and analyzing the relationship between the firmness coefficient of the coal samples and pre-exponetial factor.The results show that the pre-exponetial factor of the coal samples decreases with the increase of particle size,so the oxidation rate of the remaining coal is different with the different particle sizes.The ratio of the pre-exponetial factor a of the mixed coal samples after impact to that of the in the single particle size coal samples decreases with the increase of the firmness co-efficient.The risk of spontaneous combustion of the remaining coal in goaf needs to be considered in the context of its hardness as a key index.关键词
煤自燃/升温氧化/硬度/耗氧速率/粒度Key words
coal spontaneous combustion/heating and oxidation/hardness/oxygen consumption rate/particle size分类
矿业与冶金引用本文复制引用
秦跃平,徐晨昕,徐懿,王煊,韩雪,陈逸涵,宁晗..硬度对采空区遗煤氧化速率的影响[J].黑龙江科技大学学报,2025,35(1):6-13,8.基金项目
国家自然科学基金项目(52074303) （52074303）
