一、试验工作面概况大同矿务局红一矿8710工作面长187米,平均走向长度565米,煤层厚1.32—1.45米倾角小于2度,煤质坚硬。直接顶为砂质页岩和细砂岩互层,属坚硬顶板,整体大块冒落。工作面使用西安煤矿机械厂制造的MLQ—80型单滚筒单摇臂采煤机组和150型可弯曲刮板运输机。现在全工作面使用TZ—140型液压自移支架,共124架。截至72年6月底,试验工作面已推进 First, the test surface profile Datong Mining Bureau 8710 a red mine face 187 meters long, the average length of 565 meters, the seam thickness of 1.32-1.45 meters dip less than 2 degrees, the coal quality is hard. Directly for the top of sand shale and fine interbedded sandstone, is a hard roof, the overall bulk of the fall. The working face uses the MLQ-80 single-drum single-arm coal-mining unit and the 150-type flexible scraper conveyor manufactured by Xi’an Coal Mining Machinery Factory. TZ-140 hydraulic self-moving bracket is now used for the whole working surface, a total of 124. As of the end of June, 72, the test surface has been advanced