Research on mechanisms of roadway surrounding rock instability and stability control technologies during final mining period: a case study of the 51109 working face at Lijiahao coal mine
To address the issue of surrounding rock instability in the retreat passage during the final mining phase of coal seams beneath goaf areas, ensuring rapid and safe equipment withdrawal, this study focuses on the 51109 working face (5-1 coal working face beneath the 3-1 coal goaf) at Lijiahao Coal Mine. Employing a comb...