The fracture propagation effect in thick-hard roof strata during hydraulic fracturing is critically significant for evaluating the technology's effectiveness in preventing rock bursts. Using the hydraulic fracturing operation in the thick-hard roof strata of the 20101 working face as an engineering case study, this research investigated the fracture propagation effect through surface microseismic monitoring and the small-volume covering ellipsoid method. The results demonstrate that: ①A total fracture length of 1,000 m was achieved, with 1,255 microseismic events monitored during hydraulic fracturing. The fracture propagation range exhibited a positive correlation with fracturing fluid consumption but showed no correlation with operation duration. As microseismic events increased, the fracture propagation range in thick-hard rock strata expanded;② Centered on the horizontal well, hydraulic fractures demonstrated average radii of 127 m (north-south direction) and 31 m (vertical direction), with an average width of 71 m (east-west direction). The stimulated reservoir volume (SRV) in thick-hard rock strata reached 371.2×10⁴m³ post-fracturing；③ Water discharge conditions at underground drainage borehole drilling sites showed good agreement with fracture propagation results detected via surface microseismic monitoring.These findings confirm that surface microseismic monitoring technology can effectively study fracture propagation effects, providing a scientific basis for evaluating both fracture propagation outcomes and rock burst prevention effectiveness in thick-hard roof strata hydraulic fracturing.