关键词: 沿空留巷, 覆岩运动, 爆破预裂卸压, 柔模混凝土

Abstract: To solve the serious problem of perimeter rock deformation and ring breaking in the field by mining influence, we take Shanxi Jincheng Coal Mine as the engineering background, analyze the different stages of the overlying rock movement law along the perimeter of the perimeter of the perimeter of the perimeter of the perimeter of the mine, clarify the focus of the control of the perimeter rock, and determine the synergistic control way of "internal support-external pressure relief", and use the theoretical analysis, on-site application and monitoring. Theoretical analysis, field application and monitoring were used to analyze and validate the flexible concrete support next to the lane and the roof plate pre-cracking and pressure relief by over-blasting. The research results show that the deformation speed of the roadway along the hollow stay roadway is larger within 100m of the lagging working face, and the pressure change of the flexible mold wall is larger and reaches the highest value within 200m of the lagging working face, so it should be the key point of maintenance; the optimized roadway support body can meet the bearing capacity of the roadway gangs; the roadway support of the flexible mold concrete wall and the over-the-top pre-cracking cutting and unloading of the roof work synergistically to reduce the impact of mining stress, improve the mining stress, and reduce the impact of the mining stress, improve the mining stress, improve the mining stress, and improve the mining stress of the roof. Mining stress influence, improve the stress environment of the stay lane at the same time improve the support strength of the lane gang support strength, effectively improve the stability of the stay lane perimeter rock.