利用岩粉防治遗煤自燃可行性研究

doi:10.16265/j.cnki.issn1003-3033.2017.04.011

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (4): 60-65.doi: 10.16265/j.cnki.issn1003-3033.2017.04.011

利用岩粉防治遗煤自燃可行性研究

张春^1,2 副教授, 李集明^1,2

1 辽宁工程技术大学安全科学与工程学院,辽宁阜新 123000
2 辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室,辽宁阜新 123000

收稿日期:2016-12-08 修回日期:2017-02-20 发布日期:2020-11-22
作者简介:张春 (1979—),男,辽宁沈阳人,博士,副教授,主要从事矿井火灾防治方面的研究工作。E-mail:zhangchun110@163.com。
基金资助:
国家自然科学基金资助(51404131,51374121)。

Feasibility study of using rock powder to prevent spontaneous combustion of residual coal

ZHANG Chun^1,2, LI Jiming^1,2

1 College of Safety science and Engineering,Liaoning Technical University,Fuxin Liaoning 123000, China
2 Key Laboratory of Mine Thermo-motive Disaster and Prevention, Ministry of Education, Fuxin Liaoning 123000, China

Received:2016-12-08 Revised:2017-02-20 Published:2020-11-22

摘要/Abstract

摘要： 为探讨用岩粉防治遗煤自燃的可行性,用理论与试验相结合的方法,研究混有岩粉的遗煤自燃过程。首先,由理论分析可知,岩粉的混入主要对遗煤自燃起阻止作用;将试验分成3组,观测各试验煤样的氧化升温过程。试验结果表明,混入岩粉的量及粒径对遗煤自燃过程有较大影响;当岩粉量大于临界岩粉量时,岩粉的混入能抑制遗煤自燃;当岩煤比达到1∶1及以上时,遗煤基本失去自燃的危险;当混入岩粉粒径大于临界粒径、接近峰值粒径时,混入岩粉对遗煤自燃的防治效率最高。在合理的岩粉量及粒径条件下,用岩粉防治遗煤自燃理论上是可行的。

关键词: 遗煤自燃, 试验研究, 临界岩粉量, 临界岩粉粒径, 峰值岩粉粒径

Abstract: In order to ascertain the feasibility of using rock powder to prevent spontaneous combustion of residual coal, the methods of theoretical analysis and experimentation were used to study the spontaneous combustion process of residual coal mixed with rock powder. First, according to theoretical analysis, the rock powder mixed with the residual coal will prevent spontaneous combustion of the residual coal. The experiment included three groups. The heating processes of coal samples were observed. The experimental results show that both the quantity and the particle size of the rock powder have a great influence on the spontaneous combustion process of the residual coal,that rock powder can prevent spontaneous combustion of residual coal when its quantity is greater than the criticality quantity, that spontaneous combustion of residual coal will not occur when the mixing ratio of rock powder to coal is 1∶1 and above,that when the particle size of rock powder is larger than the criticality particle size and near to the peak particle size, the efficiency with which the rock powder prevents spontaneous combustion of the residual coal is the greatest,and that it is feasible theoretically that using rock powder to prevent spontaneous combustion of the residual coal when the quantity and the particle size are determined reasonably.

Key words: spontaneous combustion of residual coal, experimental study, criticality quantity of mixing rock flour, criticality particle size of mixing rock flour, peak particle size of mixing rock flour

中图分类号:

X932

张春, 李集明. 利用岩粉防治遗煤自燃可行性研究[J]. 中国安全科学学报, 2017, 27(4): 60-65.

ZHANG Chun, LI Jiming. Feasibility study of using rock powder to prevent spontaneous combustion of residual coal[J]. China Safety Science Journal, 2017, 27(4): 60-65.

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利用岩粉防治遗煤自燃可行性研究

Feasibility study of using rock powder to prevent spontaneous combustion of residual coal

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