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前 言 威远煤矿是一个有三十多年开采历史的老矿。所采煤层属侏罗纪香溪统煤系下煤组3号煤层(通称上元炭);煤层厚度0.3～0.6米,倾角3-7度,煤质普氏硬度系数f=1.5～2.5,属三级顶板,超级瓦斯矿井。目前有两个生产矿井,即一井和二井。 解放后,在毛主席、党中央的英明领导下,在毛主席革命路线指引下,矿山面貌日新月异,井下开采条件不断得到改善,从无到有地发展成为一个半机械化矿井,从小到
Preface Weiyuan coal mine is an old mine with more than 30 years of mining history. The coal seam belongs to No. 3 coal seam of Xia Coal Group (commonly known as Shangyuan Carbon) in the Jurassic Xiangxi coal-bearing coal system. The thickness of coal seam is 0.3-0.6 meters, inclination angle is 3-7 degrees, and the hardness of coal is f = 1.5-2.5 Three roof, super gas mine. There are currently two production mines, one well and two wells. After the liberation, under the wise leadership of Chairman Mao and the Party Central Committee and under the guidance of Chairman Mao’s revolutionary line, the mining landscape changed rapidly and the underground mining conditions were continuously improved. From scratch, it developed into a semi-mechanized mine from an early age