Study on Grouting Reinforcement Technology of Surrounding Rock of Goaf Mining Roadway
Surrounding rock deformation of goaf mining roadway is a common safety hazard in the process of safe and efficient production.In this paper,the stability of surrounding rock structure and surrounding rock deformation and failure rule are analyzed by theoretical analysis and numerical simulation.On this basis,combined with the existing supporting parameters of mine,the grouting reinforcement scheme is designed and applied in the field.The results show that the maximum tensile stress of the roof and floor of the goaf mining roadway is located on the side of partial coal pillar and partial solid coal in the middle of the roadway,and the basic roof fracture location is directly above the roadway.The roof angle,coal pillar and roof angle formed between the roof and floor of the roadway and coal pillar are the main failure areas of the surrounding rock.The deformation of surrounding rock of roadway is effectively controlled after grouting reinforcement for the failure area.This paper provides a reference for surrounding rock control of open-air mining roadway.
goaf mining roadwaysurrounding rock controlgrouting reinforcementsurrounding rock deformation
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