To discuss the domino instability effect and large area roof falling and roof accidents of surrounding rock-coal pillars in a room-and-pillar gob, the equilibri
Investigation of temperature effect on mechanical parameters of coal is very important for understanding the mechanical response of coal bed at high temperature
For a study of the movement and deformation of coal-rock mass and low protected seams below a stope,as well as for fracture developments and rules of evolution
'Riding mining' is a form of mining where the working face is located above the roadway and advances parallel to it.Riding mining in deep soft rock crea