To friable rock mass in the goaf, numeric model using the 3-D finite difference method is established to analyze it.
针对采空区内的松散岩体，运用三维有限差分法建立了数值模型对其进行分析；
Through the experimental research on the compaction of friable rock block, the relationship among deformation modulus, axial stress and strain were obtained.
通过对松散岩块压实试验研究，得到了变形模量与轴向应力、轴向应变的相关性规律。
Through the experimental research on the compaction of friable rock block, the relationship among deformation modulus, axial stress and strain were obtained.
通过对松散岩块压实试验研究，得到了变形模量与轴向应力、轴向应变的相关性规律。
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