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露天矿边帮巷道的变形破坏与边坡稳定性、巷道的空间位置和围岩性质等因素直接相关.针对鞍钢集团大孤山露天铁矿边帮巷道衬砌开裂的现象,利用地质雷达对裂缝开裂处的巷道围岩进行了破坏深度的探测,获得了巷道衬砌裂缝开裂处围岩破坏程度.分析了巷道的空间位置和边坡稳定性对巷道变形破坏的影响程度.结果表明:大孤山露天铁矿巷道衬砌开裂的机理主要是巷道围岩病害所致,而非整体边坡的滑动所致,为巷道的治理提供了科学依据.
The deformation and failure of the open pit roadway is directly related to the stability of the slope, the spatial location of the roadway and the properties of the surrounding rock.In view of the phenomenon of cracking of the lining of the sidewalks of the Dagushan open-pit iron mine in Ansteel Group, The surrounding rock of the roadway was probed and the damage degree of the surrounding rock of the crack in the lining of the roadway was obtained.The influence of the spatial position of the roadway and stability of the slope on the deformation and destruction of the roadway was analyzed.The results showed that: The mechanism of cracking in the lining of the iron mine roadway is mainly caused by the disease of surrounding rock of the roadway instead of the sliding of the whole slope, which provides a scientific basis for the harnessing of the roadway.