杨庄煤矿核定生产能力0 .5 5Mt a。生产水平为- 6 0水平和- 2 5 0水平,主采区为六、七采区,矿井通风方式、为中央边界抽出式,主、付井进风,三号风井回风。风井设有两台2K5 6 - 4No4风机,配套电机2 6 0kW ;矿井排风量4 2 0 0m3 min左右,负压在1 5 6 8～1 76 4Pa之间;等积孔大于2 Yangzhuang Coal Mine approved production capacity of 0.55Mt a. The production level is -60 level and -250 level. The main mining area is the sixth and seventh mining areas. The ventilation mode of the mine is the central boundary extraction type, the main and pay well inlet wind, the third wind shaft return air. The shaft has two 2K5 6 - 4No4 fans with supporting motors of 260kW; the exhaust volume of the mine is about 4200m3min and the negative pressure is between 1568 and 1776Pa;