There are two air shafts in this mi

There are two air shafts in this mine: the south wing air shaft and the north wing air shaft. The south and north wing wind wells are located on the south and northwest sides of the upper boundary of the mine field respectively. 7.5m in diameter, 40.17m2 in net area, 52.16m2 in gross area of bedrock section and 72.59m2 in gross area of topsoil section. Shaft concrete support, bedrock section of 450mm thick concrete, topsoil section of 1200mm thick concrete. The shaft is equipped with a closed glass fiber reinforced plastic ladder room, a sprinkler pipe and a gas extraction pipe. Wellbore section layout is shown in Figure 4-5.