论文部分内容阅读
一、工作面概况北京矿务局门头沟矿试验工作面选在龙门二槽。煤层厚1.6—3米,平均2.5—2.6米,倾角4—6°,局部达8—12°。煤质较硬,煤中有脆而硬的石英墨。顶板为粗砂岩,且含石英,属坚硬顶板。试验工作面全长90米,中部有2.5架试验用的自移式液压支架,其余皆为木柱。采煤机组为鸡西煤矿机械厂制造的MLQ—80型可调高单滚筒采煤机组(因双滚筒采煤机组尚未到货),最大采高1.8米。运煤采用160型可弯曲刮板运输
First, the face profile Beijing Mining Bureau Mentougou test surface selected in the gantry two tanks. Seam thickness 1.6-3 meters, an average of 2.5-2.6 meters, dip 4-6 °, the local up to 8-12 °. Hard coal, coal, brittle and hard quartz ink. Roof is coarse sandstone, and contains quartz, is a hard roof. The test face is 90 meters in length. There are 2.5 self-moving hydraulic supports in the middle and the rest are wooden columns. The coal winning unit is MLQ-80 adjustable single drum shearer manufactured by Jixi Coal Mining Machinery Factory (due to the double drum shearer has not yet arrived), the maximum mining height is 1.8 meters. Coal transportation using 160-type flexible scraper transport