近距离煤层开采自然发火综合防治措施

摘要

The spacing between the 301 fully mechanized coal mining face laying 12 coal mine and 12 day-coal is 10 ~ 20m, and the two layer of coal has the unminable coal with the thick of 0.3~3m. With the working face advancing and roof caving, the float coal thickness increases in goaf, which provides material conditions for spontaneous combustion of coal. And the goaf of contiguous seams is a loose, the air leakage of goaf is serious, the lfoat coal spontaneous combustion risk increases. Therefore, it is important to study the related technical measures contiguous seams ifre prevention.%上湾煤矿12煤层301综采工作面与上部12上煤层间距为10~20m，且两层煤间距有0.3~3m厚的不可采煤层。随着工作面的推进垮落于采空区，采空区浮煤厚度逐渐增加，为煤炭自燃提供了物质条件。且近距离煤层采空区是一个松散体，采空区漏风严重，浮煤自燃危险性增加。因此，研究近距离开采煤层防灭火相关技术措施具有重要意义。