找矿开采三迭纪安源煤系，煤层薄、倾角大，采煤的坑耗高，效益低。建矿以来，坑耗总在3o0m3／万t左右，1978年坑耗最高达400m3／万t。自八十年代至今，我矿坚持改革采区巷道布置，改革采煤工艺，使降耗工作有了新的起色，坑耗降到200m3／万t以下，促使经济效益逐年提高。1993 Prospecting Mining Triassic Anyuan coal seam, coal seam is thin, dip angle, mining pit consumption, low efficiency. Since the construction of the mine, the pit consumption is always about 3o0m3 / ten thousand tons, and the pit consumption up to 400m3 / ten thousand tons in 1978. Since the 1980s, the mine has been adhering to the reform of roadway layout in the mining area, reforming the coal mining process, and has made new progress in reducing consumption. The pit consumption has dropped below 200m3 / 10000t, prompting the economic efficiency to increase year by year. 1993