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以祁东煤矿断层构造地带6163机巷为例,通过在巷道现场布置钻孔窥视测站进行摄影实测,研究巷道的破坏特征、顶板围岩裂隙演化规律。研究结果表明,断层构造带影响下巷道围岩局部出现水平应力集中,顶板破碎并出现明显下沉、两帮移近量大,因此断层构造地带巷道需进行及时加强支护。
Taking the 6163 machine lane in Qidong Coal Mine fault structure area as an example, the borehole observation station was used to carry out photogrammetry to study the damage characteristics of the roadway and the evolution law of cracks in roof rock. The results show that horizontal stress concentrates on the surrounding rock of the roadway under the influence of fault structure zone, the roof is broken and obviously sinks, and the two approaches move nearly in large amount. Therefore, the roadway in the fault structure zone needs to be strengthened in time.