复合煤层大倾角综放工作面综合防灭火技术研究

Research on comprehensive fire fighting technology in fully mechanized caving faces of composite coal seam with large dip angle

针对9421工作面采空区外部漏风量增加,遗煤全面氧化,发火面积大,工作面支架后浮煤氧化升温产生火风压等复杂情况。分别应用均压防灭火技术,发火区灌注普瑞特Ⅰ防灭火技术,架后灌注普瑞特Ⅱ消除火风压防灭火技术。

The 9421 working face mining the air leakage in the goaf external increase; the ignition area caused by the residual coal comprehensive oxidation is large; occur the fire presure in behind the support because the temperature rise caused by the floating coal oxidation, the even pressure fire prevention and extinguishing technology; the perfusion Pratt I fire prevention and extinguishing technology in the fire zone; the perfusion Pratt II eliminate firepresure fire prevention and control technology behind the support was respectively used.