东河煤矿切顶卸压护巷技术探讨

Discussion on roof cutting and pressure relief technology for roadway protection in Donghe Coal Mine

针对东河煤矿2206切顶卸压工作面运输巷道采用原支护参数不能满足留巷的支护需求;采用理论分析和工程经验确定了切顶卸压的各项参数及恒阻大变形锚索具体参数;并确定了运输巷道临时支护方案参数,最终进行了工业试验,不但可以保证轨道巷道的安全使用,而且取得了巨大的经济效益。

In view of the problem that the original support parameters used in the transport roadway of 2206 roof cutting and pressure relief face in Donghe coal mine can not meet the needs of roadway retaining support, this paper determines the parameters of roof cutting pressure relief and constant resistance large deformation anchor cable by theoretical analysis and engineering experience, and determines the temporary support scheme of transportation roadway,and carries out industrial test, which not only ensures the safe use of the roadway, but also takes Great economic benefits have been achieved.