摘要
为提高望云煤矿15#煤层回采率,提出采用支护解除技术来减小150107工作面初采损失,支护解除可显著减小顶煤初次垮落步距。应用结果表明,顶煤初次冒落步距减小了9 m,初采损失减少了31.9%,工作面采出率提高了1.12%。
In order to increase the recovery rate of the 15~# coal seam in Wangyun Coal Mine,the support removal technology is proposed to reduce the initial mining loss of the 150107 working face.Support removal can significantly reduce the initial top coal caving step distance.The application results show that the first top coal caving step distance is reduced by 9 m,and the initial mining loss is reduced by 31.9%,and the mining rate of the working face is increased by 1.12%.
作者
刘铁钢
Liu Tiegang(Lvliang Municipal Coal Mine Five-person Guarantee Center,Shanxi Lvliang 033000)
出处
《山东煤炭科技》
2021年第1期80-82,共3页
Shandong Coal Science and Technology
关键词
综放
回采率
支护
解除
fully mechanized caving
recovery rate
support
remove
