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1 矿井概况北宿矿井位于山东究州煤田南部,设计年生产能力45万t。井田为兖州向斜南翼的边缘地区,单斜构造,煤层倾角2°～10°。主采16上和17两个煤层,煤层厚度均为1m左右,层间距14m。低沼气矿井,有煤尘爆炸危险,煤自燃发火不严重。矿井采用立井,单一水平大巷,上、下山开拓方式。采区为双面布置,走向长度一般为1400～1600m,走向长壁后退式采煤,
1 Mine Overview North Suqian coal mine in southern Shandong Province, designed annual production capacity of 450,000 t. Minefield is the marginal area of the south wing of the Yanzhou syncline, with a monoclinic structure with dip angle of 2 ° ~ 10 °. The main mining 16 and 17 two coal seams, seam thickness are about 1m, spacing 14m. Low biogas wells, coal dust explosion danger, spontaneous combustion of coal is not serious. Mine shaft, a single level of the alley, up and down the mountain to open up ways. Mining area for the double layout, the length of the general 1400 ~ 1600m, to the long-wall backward coal mining,