Study on the coexistence of gas and coal spontaneous combustion (I): Disaster mechanism

被引：0

作者：

Zhou, Fu-Bao ^{[1
]}

机构：

[1] State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221008, China

来源：

Meitan Xuebao/Journal of the China Coal Society | 2012年 / 37卷 / 05期

关键词：

Coal - Cracks - Coal mines - Spontaneous combustion - Coal combustion - Disasters;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The investigation of gas and coal spontaneous combustion in 229 coal mines of main mining areas in China shows that 74 mines suffer from the coexistence of gas and spontaneous combustion of coal, the number of which has a increasing trend with the mining depth growing. So the coal disaster mechanism caused by the coexistence of gas and spontaneous combustion was studied, which proved that disasters arise only from the intersection area of CH4, O2 and heat in cracks. What's more, the mathematical model of multi-gas migrating in cracks was built upon definite data, establishing the relationship between mass concentration and velocity of gases such as N2, O2 and CH4. At last, typical disaster cases in coal mines was analyzed to verify the practicability of disaster mechanism of gas and coal spontaneous combustion coexistence.

引用

页码：843 / 849