注氮防灭火技术在特厚自燃煤层综放工作面的研究与应用

Nitrogen Injection to Prevent Fire on Fully-mechanized Mining Face of Extra-thick Spontaneous Combustion Seam

通过理论计算,合理选取注氮设备、输氮管路管径,并根据现场实际情况,优化了氮气释放口位置、实现了24 h连续注氮,确定了综放工作面日常防火注氮流量。

Nitrogen injection equipment and pipeline diameter are selected by theoretical calculation.According to the field investigation, the nitrogen relief vent was optimized to realize 24-hour continuous nitrogen injection and to determine the daily parameter （flux） of the nitrogen injection for the fire control on fully-mechanized mining face.