综合防灭火技术在急倾斜煤层分段放顶煤工作面中的应用

摘要

通过急倾斜煤层分段放顶煤综合防灭火技术应用的实例，对急倾斜煤层分段放顶煤开采过程中CO浓度升高的原因进行了分析，通过采取地表填埋、采空区注三相泡沫、均压通风等综合防灭火手段后，工作面一氧化碳明显下降，现场应用效果良好，并提出急倾斜煤层放顶煤回采防治自燃发火应该注意的几个关键问题。%Through the instance of application of synthetical technique preventing and extinguishing fire technology in section top coal caving, the reason of CO concentration increases during mining process is analyzed. Through the way of surface landfill, injecting three-phase foam and pressure balancing ventilation, the CO concentration significantly decreased. The field application effect is good and few key problems which should be pay attention to in prevention and treatment of spontaneous combustion in section top coal caving are put farward.