A Study on Movement Characteristics and the Destruction Regularities of the Overlying Strata from Deep Mining

On the basis of the important role of the overlying strata movement in safety prediction and control of coal mining, indoor similar material model test was conducted to study on the movement characteristics and the destruction regularities of the overlying strata from the deeply buried sublevel caving coal mining. The generation position and its extension regularities of overburden bed separation after the mining were analyzed. In addition, the impact of abutment pressure on movement conditions and structure damage of strata combination was explored. Lastly, characteristics of the rock beam subsidence and surface subsidence were discussed with the intention of providing basis for the design of pressure control of stratum movement and mines.