Mechanism and Control of Deep Roadway Surrounding Rock Deformation and Instability

Based on the research and analysis of deformation and failure mechanism of deep preparation roadway surrounding rock, according to the geological conditions of the third mining area of the Wangjiazhai Mine, the roof and the two sides should be overall and timely supported by the combination of bolts and cables with high strength and high pretension force, making the thin roof transfer a pre-stressed clamping combined rock board with large thickness and high rigidity. The stress peak area of two sides will be transferred to the deep surrounding rock, which makes the roof and two sides stable by protecting each other.