The Deep Wide Strip Coordination Mining Technology and Engineering Application

The conventional strip mining method can control the movement and deformation of the surface effectively, and protect the ground buildings. But its recovery rate is low, so that wastes a lot of coal resources, and reduces the service life of mine. In order to solve this problem, based on the principle of critical deformation value, this paper, puts forward the wide strip coordination mining method to improve the recovery rate and to free pressed coal under buildings. This method makes use of the advantages of strip mining and multi working face, reduces ground static deformation effect on buildings. And it realizes mining without moving village in the low diving of mining area.