![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[多选题]
()必须至少设置1条专用回风巷
A.低矿井开采煤层群和分层开采采用联动布置的采(盘)区
B.开采容易自燃煤层的采区
C.突出矿井的每个采(盘)区
D.高瓦斯矿井的采(盘)区
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
ABCD
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.低矿井开采煤层群和分层开采采用联动布置的采(盘)区
B.开采容易自燃煤层的采区
C.突出矿井的每个采(盘)区
D.高瓦斯矿井的采(盘)区
ABCD
A.高瓦斯矿井
B.有煤(岩)与瓦斯(CO2)突出危险的矿井
C.开采容易自燃的煤层。
D.低瓦斯矿井开采煤层群和分层开采采用联合布置的采区
E.爆炸性煤尘矿井
A.10-15
B.15-30
C.20-40
D.25-40
A.10-20
B.20-30
C.25-35
D.25-40