摘要
采空区煤自燃的根本原因是破碎煤块的表面与大气中的氧气接触后发生氧化分解与碎裂,并放出热量,导致煤堆温度不断上升,逐渐达到燃点。采用煤体注液技术后,高压注入煤层的阻化液可均匀渗入煤体中的孔隙,因此,开采后被丢入采空区的煤体不论如何破碎,破碎煤块均可被阻化液均匀包围,隔绝了与氧气的接触,从而起到防止氧化、延长自然发火期的作用。
The fact that the autoignition of the coal in mined-out space is basically due to the surface of the grinded-coal contacting with oxygen have a oxidation decomposition, releasiong heat, whicth leads to the tempreture of dump continuously increase and gradually reach the ignition point. Applied to reasonable coal-injection technology, it can make the inhibitory solution incorporate the aperture gap. Consequently, no matter how to grind the coal, it will be evenly bounded with inhibitory solution and prevent the contaction with oxygen,which prevents oxidation and prolong the duration of spontaneous combustion.
出处
《华北科技学院学报》
2009年第2期23-25,32,共4页
Journal of North China Institute of Science and Technology
关键词
阻化剂
采空区
自燃
高硫煤
inhibitory solution
mined-out space
spontaneous combusion
high-sulphur coal
