Similar simulation of overlying rock movement and surface deformation behavior with multi-coal seam mining

Taking geological conditions of Kangjiagou coal mine under Lishi—Jundu freeway as a prototype,similar material simulation was carried out for examining the behavior of overlying rock movement and surface deformation with multi-coal seam mining.The results show that under the condition of multi-coal seam mining,with the increase of total thickness of coal seam,the overlying rock subsidence of three zones of gob and surface subsidence,surface lean deformation,surface level movement,surface curvatu...