同忻煤矿12901工作面回采巷道加强支护探讨

Discussion on Strengthening Support of Stoping Roadway in 12901 Working Face of Tongxin Coal Mine

回采巷道是回采工作面布置运输皮带、轨道的重要通路,一旦支护强度不够,则会严重影响回采出煤;回采巷道受采动影响支承压力值较大,对回采巷道的加强支护非常重要。本文以山西同忻煤矿12901工作面回采巷道为实例,对其围岩破坏松动范围进行分析;对巷道顶板、两帮的支护进行设计。实践表明,支护措施较好地控制了围岩移近量,巷道满足使用要求。

The mining roadway is an important passage for the arrangement of the transportation belts and tracks in the working face.Once the support strength is not enough,it will seriously affect coal mining,and the relatively large value of abutment pressure is very important for strengthening the support of the mining roadway.Taking the stoping roadway of 12901 working face in Tongxin colliery in Shanxi as an example,the paper analyzes the damage and loose range of its surrounding rock,designs the support of the roadway roof and two sides,which controls the surrounding rock convergence and meets the requirements of use.