Deep Roadway Shear Dislocation Floor Heave Prevention and Control Based on Inclined Grooving Technology Backfilling

In order to control the shear dislocation type floor heave in deep roadway, the inclined grooving backfilling technology is introduced. FLAC^3D and UDEC software were used. We found that inclined grooving can reduce the roadway floor stress concentration degree effectively, and inclined backfilling can effectively limit the floor to continue to take up by mining. When the inclined angle is 70 degrees, the effect of floor heave control is the best.