NUMERICAL SIMULATION ON MECHANISM OF DEFORMATION OF SEPARATED STRATA IN OVERBURDEN
覆岩离层变形力学机理数值模拟研究

The stress state and the production of the layer separation in overburden are studied. Based on the rock failure process analysis (RFPA) method,the balancing arch is simulated in overburden produced by material mining and the relation between the initial stress and the places in arch where the horizontal stress,the vertical stress and the shearing stress are concentrated. The research is a theoretical basis on calculation of the height and the range of the layer separation in overburden.