目前对于75？以上的中厚及厚急倾斜煤层还没有能够形成一种安全高采出率的采煤方法。论文针对阿戛煤矿高瓦斯突出近距离煤层平均倾角78？的地质赋存条件，综合利用采矿学原理、工程类比和理论分析的方法，发明了新形的急倾斜“立U形”工作面采煤方法，确定了阿戛煤矿近距离煤层联合开拓巷道的层位、长度、断面尺寸及支护方式，设计了包括高位瓦斯巷、下位运输巷和工艺联络巷的回采巷道系统，配套了工作面ZF6800/17/31型放顶煤液压支架、ZFD18000/17/30型巷道液压支架组、MG200/WD型采煤机等主要技术装备，实现了阿戛煤矿急倾斜煤层的安全高效开采，解决了特大倾角煤层的机械化采煤技术难题。
At present, there is no coal mining method that can form a safe and high production rate for medium and thick steeply inclined coal seams above 75？. Paper aimed at ending o gas outburst close seam average Angle 78？ of geological occurrence conditions, comprehensive utilization of mining science principle, engineering analogy and theory analysis method, invented a new type of steep “u-shaped” working face mining method, to determine the ending coal o close coal seam joint development road of the horizon, length, section size and the supporting method, the design including the high gas, lower transportation lane and process connection extraction roadway system. The main technical equipment, such as ZF6800/17/31 type caving hydraulic support, ZFD18000/ 17/30 type roadway hydraulic support group and MG200/WD coal mining machine, has been provided for the safe and efficient mining of sharp inclined coal seam in The Aga coal mine, and the technical problem of mechanized coal mining in extremely inclined coal seam has been solved.
