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大倾角(急倾斜)煤层的储量大约占全国煤炭总储量的15%~20%,分布广泛,在全国多数矿区都存在相当地质储量。在某些特定矿区或矿井,大倾角煤层甚至是主采煤层。大倾角煤层自然赋存条件复杂多变,开采困难,采煤机械化发展缓慢,工人劳动强度大,开采成本高。目前,大倾角煤层开采水平远低于缓倾斜煤层,存在较多技术难题,因而研究高可靠综合机械化开采技术,十分迫切[1]。其开采过程
Large dip (steeply inclined) coal reserves account for about 15% to 20% of the national total coal reserves, widely distributed, there is considerable geological reserves in most of the country’s mining area. In some specific mines or mines, high-angle coal seams are even the main coal seams. Large incline coal seam is complicated and changeable in nature, its mining is difficult, the mechanization of coal mining is developing slowly, the labor intensity of workers is high, and the mining cost is high. At present, the mining of high-angle coal seam is much lower than that of gently inclined coal seam, and there are many technical problems. Therefore, it is urgent to study the highly reliable comprehensive mechanized mining technology [1]. Its mining process