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;研究结果表明,在不同埋深条件下松散岩体的应力呈直线变化;
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