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唐山矿421采煤队采用高档普采设备,于1983年10月在6156工作面月产原煤70166t,平均日产2263t,各项技术经济指标见表1。 6156工作面位于11水平西翼一石门五煤层,平均煤厚2.29m,煤层上有一层泥岩,平均厚0.2m,直接顶为砂岩,厚2～3m,老顶为砂岩或砂砾岩,厚10～15m,直接底为粉砂岩。工作面长150.3m,倾角10°。使用DY—150型单摇臂滚筒采煤机和SGW—150C
The coal mining team of Tangshan Mine 421 adopts high-grade universal mining equipment and produced 70,166 tons of raw coal per month on 6156 working face in October 1983 with an average daily production of 2263 tons. Table 1 shows the technical and economic indicators. The 6156 face is located on the 11th level west wing of a stone gate five coal seam, the average coal thickness 2.29m, a layer of mudstone on the coal seam with an average thickness of 0.2m, directly to the top sandstone, thickness 2 ~ 3m, sandstone or conglomerate rock, thickness 10 ~ 15m, directly at the end of siltstone. Working face length 150.3m, inclination 10 °. DY-150 single-arm drum shearer and SGW-150C are used