Three-dimensional numerical simulation of bust-prone experiments about coal-rock combination

Using FLAC3D, three-dimensional numerical simulation of bust-prone experiments about coal-rock combination at a coalmine in Henan Province was studied. Through changing height scale(1:1, 1:2, 2:1) and intersection angle between coal and rock, the influence of different combination modes on its bursting potential was researched. The results show that the height scale between coal and rock is more larger, the damage energy index is more higher, the elastic energy index is more higher, and the bursting potential is more stronger. And the intersection angle between coal and rock is more larger, the damage energy index is more lower, the elastic energy index is more lower, and the bursting potential is more smaller.