Surrounding Rock Comprehensive Control Technology of Driving Along the Goaf in Three Soft Coal Seam and Its Engineering Application

摘要

The stress distribution of gateway driven along goaf in three soft coal seam is complex,conventional shelf support and bolt support unable tomaintain the stability of coal pillar,supporting structure with large deformation is apt to instability.Through the structure and deformation law of gatewaydriven along goaf analysis,the high-quality support system with high-quality pretensioned bolt,drawing arc network and T steel belt is adaptive to gatewaydriven along goaf.The high-quality support system can increase the strength of the surrounding rock.Ended with an engineering instance,a new kind ofsuccessful supporting technique is introduced.