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告成矿是1座设计产能为90万 t/a 的中型矿井,1999年投产,2000年达产。副井向北在 L_7～L_8灰岩中沿走向布置2条大巷:-110 m 运输大巷是新鲜风流、煤炭及材料运输的主要通道;-100 m 回风大巷是采区专用回风通道。首采13采区采用倾斜长壁采煤法,2004年13151和13121 2个炮采工作面已开始回采,这2个工作面切巷长130 m,倾斜可采长度为800 m,煤层平均厚为4 m.平均倾角为-80°,13121、13151采面巷道布置如图1所示。
As a mine, a medium-sized mine with a designed production capacity of 900,000 t / a was put into operation in 1999 and reached production in 2000. The auxiliary shaft is arranged northward in limestone L_7 ~ L_8 with two lanes arranged along the strike: -110 m transportation lanes are the main channel for fresh air flow and coal and material transportation; -100 m return air lanes are the special return air for mining area aisle. In the first mining area, the inclined longwall coal mining method was adopted. In 2004, 13,151 and 13,1212 cannon mining face mining started to be started. The two face lengths were 130 m long and the lean recoverable length was 800 m. The mean coal thickness 4 m. The average inclination is -80 °, 13121, 13151 mining face roadway layout shown in Figure 1.