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在塔斯塔戈尔矿,深度在400米以上的矿体采用分段平巷和阶段矿房法开采。随着开采向600米或600米以下的深度过渡,开始采用高生产率的阶段强制崩落法,用不同装药结构的柬状平行密集深孔向切割槽和挤压介质崩矿。只有在新水平开采第一个分割矿块时才开切割槽。随着开采深度的加大,矿山压力增大,原岩中的最大主应力比垂直应力大1.5倍。受回采影响的地带,最大主应力垂直矿体走向,其值超过原岩应力1～2倍。
At the Tastaguer Mine, ore bodies more than 400 meters deep are mined by staging and stage mines. As mining transitioned to depths below 600 meters or 600 meters, a high-productivity, stage-forced caving approach was started with cavern-like, parallel-packed, deep holes in different charge structures to cut the trenches and crush the media. Cut ditches are only opened when the first split block is mined on a new level. As mining depth increases, the pressure of mine increases, and the maximum principal stress in the original rock is 1.5 times larger than the vertical stress. Affected by the mining area, the maximum principal stress vertical ore body, its value exceeds the original rock stress 1 ~ 2 times.