Analysis of Deformation Rule of Haulage Surrounding Rock at Fully Mechanized Caving Face in Deep Buried and Thick Coal Seam

According to 202 working face haulage was characterized by great depth, high ground stress and large cross section in a certain coal mine of Binchang Mining Area, based on strong support design principle, it gave the bolt net support scheme, and evaluate the rationality of support scheme by FLAC numerical simulation.Field monitoring showed that after haulage gate was excavated, superficial surrounding rock deformed at the fast speed, anchor began to be forced at the same time. With the disturbance of roadway excavation, the surrounding rock deformation developed deeply, and the stress of anchor cables increased. When the distance from the head of driving face exceed 30 m, the surrounding rock deformation was smaller, it was approximately prone to be stable. The results showed that the haulage support scheme at fully mechanized caving face in deep buried and thick coal seam was reasonable and feasible.