The effect of the roof-cutting and stay-away mining method on stress changes in coal mines
Traditional coal mining technology is more destructive to the environment,and the effect of coal mining is poor,which cannot meet the needs of today's social production.In this regard,this paper explores the operation process of the emerging mining technology,the roof-cutting and stay-away mining method,and analyzes the stress changes in the coal mine under its operating conditions.The results of the study show that during the long-term mining process,the offset of the ore layer is less than 15cm,and the negative damage to the environment is small,with an average environmental score of 86.2 points.The top-cutting and roadway mining method has higher safety in the mining process,and can provide a guarantee for the safety and environmental protection of coal mining operations.
roof-cutting and stay-awaystresscoal minestress concentration coefficient
NETL
NSTL
万方数据
