易自燃厚煤层π型钢放顶煤工作面注氮防灭火技术初探

π Inflammable Thick Seam Steel Caving Face Note Fire-fighting Techniques of Nitrogen

介绍了一采218采区概况、218"π"型钢放顶工作面注氮防灭火技术,论述注氮防灭火技术的优点和注氮效果及其可利用性。

Introduced a one-mining area 218 Overview, 218 ＂π＂ Steel caving Face of Fire Prevention and Control of nitrogen injection technology, nitrogen injection on fire-prevention technology and the advantages of nitrogen injection effect and availability.