江南煤田的开发,由于煤炭资源贫乏,因此提高回采率就成为十分必要的措施。我矿20多年对局部厚煤层的开采,多采出煤量45万吨,占总产量的13.7％。我矿共有2个矿井,鲤鱼塘矿井为15万吨/年,彭家冲矿井为9万吨/年,矿井可采煤层为2层,I煤为主采层,煤厚为0～8.76m,一般为1.8～2.4m。由于井田内断层交错,如鲤鱼塘矿落差大于20m的断层密度达4.5条/千米~2, The development of Jiangnan coalfield, due to the lack of coal resources, so to increase the recovery rate has become a very necessary measure. For more than 20 years, I mine the exploitation of the partial thick seam, with the extra coal output 450,000 tons, accounting for 13.7% of the total output. There are 2 mines in I Mine, 150,000 tons in Liyutang Mine, 90,000 tons in Pengjiazui Mine, 2 layers in mine and 1 to 8.76 meters in coal seam, Generally 1.8 ~ 2.4m. Due to the fault interlacing in the minefield, if the fault density of the Leiyuotang mine falling more than 20m reaches 4.5 / km2,