文档介绍：永煤公司重大隐患认定办法题库
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured17
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
作面，局部通风机没有实现“三专两闭锁”的；低瓦斯矿井掘进工作面局部通风机没有实现风电、瓦斯电闭锁的；
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《煤矿井工开采通风技术条件》规定的；
，相互切断安全出口的；
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、瓦斯抽放泵站、主要机电硐室、火药库等主要用风地点，无风、微风或风量不足的；
、回风巷道和采掘工作面风速超限的；
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《规程》规定的串联通风、扩散通风、采空区通风和回采工作面利用局部通风机通风的；
、煤与瓦斯突出矿井未设置专用回风井、采区专用回风巷的；
37. 高瓦斯、煤与瓦斯突出矿井主要乘人设备处在回风流中的；
、煤与瓦斯突出矿井以及存在高瓦斯区域的低瓦斯矿井未建立抽放瓦斯系统或抽放系统不完善的；煤与瓦斯突出矿井未建立地面抽放系统的；
；
；高瓦斯、煤与瓦斯突出矿井采掘工作面未设置专职
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceed