Automatic Filling Technology for Abandoned Roadway Under Slice Mining

For the instability of old roof, we establish mechanical model for old roof slicing and get filling body strength of filling roadway. We establish a set of automatic filling system which can completely achieve automatic filling process. To solve the local caving problem of in abandoned roadway, we propose filling method of using filling inspection hole, filling check roadway to solve the problems in the filling process, and it achieves good effect.