摘要
应用煤炭自燃机理,分析了浅埋藏、近距离煤层群开采上覆采空区高温特点及其规律,结合补连塔煤矿22305工作面具体情况,介绍了上覆采空区高温治理采取各种措施,使采空区内氧气浓度最终稳定在3%左右,温度快速下降,保证了回采工作面的顺利推进。
Using the mechanism of coal spontaneous combustion, the paper analyzed the high temperature characteristics and laws of o- verlying gob in the mining of shallow and contiguous coal seams. According to the actual situation in the 22305 workface of Bulianta coal mine, the paper described the comprehensive measures for controlling high temperature in overlying gob. After taking measures, the oxygen concentration in the gob was controlled about 3% , the temperature dropped rapidly and guaranteed the safety of fully mecha- nized mining face.
出处
《陕西煤炭》
2014年第1期36-39,共4页
Shaanxi Coal
关键词
浅埋藏
上覆采空区
高温
钻孔
液氮
shallow buried
overlying gob
high temperature
drilling
liquid nitrogen
