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六枝煤矿属急倾斜自然发火煤层。自1977年起,先后在4个采区、8个煤层、13个块段中推行无煤柱开采,共采出煤量918126吨,占采出总量的38.28%。矿井有可采煤层4层,局部可采煤层5层,其中7~#、18~#为厚煤层,煤厚2.4～4.2m,其它煤层为0.85～1.8m 左右。煤层倾角53°～57°。在薄及中厚煤层采用单一长壁和仓储式采煤方法,厚煤层采用巷道长壁法。矿井有煤与沼气突出,矿井沼气绝对涌出量为29.61m~3/min,相对涌出量54.33m~3/t。全
Liuzhi coal mine is a steep spontaneous combustion seam. Since 1977, non-pillar mining has been carried out in 4 mining areas, 8 coal seams and 13 blocks in succession, with a total coal production of 918,126 tons, accounting for 38.28% of the total. The coal mine has 4 layers of recoverable coal and 5 layers of locally recoverable coal, among which 7 ~ # and 18 ~ # are thick coal with thickness of 2.4 ~ 4.2m and others of 0.85 ~ 1.8m. Seam angle 53 ° ~ 57 °. In the thin and medium thick seam using a single longwall and storage mining method, the thick seam roadway longwall method. Coal and methane are prominent in coal mines. The absolute emission of methane in mines is 29.61m 3 / min and the relative emission is 54.33m 3 / t. all