文档介绍：淮南矿务局谢一矿
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. 系统。该矿共有四个水平，—250m水平以上已回采完毕，现主要生产水平为—660m第四水平。
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
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
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
新鲜风流由—660m水平Ⅱ线石门、Ⅰ线石门、C13层底板集中巷分别进入—600m三号石门、二号石门、运输机巷到工作面;回风由—540mC13，层回风巷、回风石门，进入—540mC13层底板总回风巷到北部回风斜井。出煤系统由工作面刮板机进入—600m运输机巷，经—600m工线石门、—600一—660m下山到—660m皮带集中运输巷至井底煤仓。该工作面与相对回采的4461C13中分层采煤一队工作面，共用一个通风和运输系统。
6月23日零时30分，矿