综放工作面煤层注水技术实践及效果分析

Technical Practice and Effect Analysis of Coal Seam Water Injection in Fully Mechanized Caving Face

以虎龙沟煤矿81505综放工作面为研究背景,通过分析煤层注水软化机理,提出合理的钻孔布置方案,确定注水参数,并进行现场注水及效果观测。实践表明:煤层注水后综放工作面各个作业工序的平均降尘率达到50%,工作面的放煤率由原来的78%提升到88%。

Taking 81505 fully mechanized caving face in Hulonggou Coal Mine as the research background,through analyzing the softening mechanism of water injection in coal seam,this paper puts forward reasonable drilling layout scheme,determines water injection parameters,and carries out field water injection and effect observation.The practice shows that the average dust fall rate of each working procedure of fully mechanized caving face after coal seam water injection reaches 50%,and the coal caving rate of working face increases from 78% to 88%.