• 上覆岩层 - 引用次数：2

  When the mine exploitation up to 1,165m elevation, the distance is about 25m between plastic zone of the superincumbent stratum rock of the goaf and plastic zone of the ground surface.

  4、当矿体继续向深部开采至1165m水平时,采空区上覆岩层的塑性区和地表破坏区间距大约25m。

  参考来源 - 水体下采空区覆岩破坏数值模拟研究

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