Application of Hollow Grouted Anchor Cable in Track Uphill Repair

The article deeply analyzes the reasons of large deformation of track uphill according to the geologic conditions of a mine, and concludes that the main factors which cause large deformation of track uphill are high horizontal stress, lower initial supporting strength, soft rock, disturbance influence of excavation, fault and water. Aiming at the characteristics of deformation, hollow grouted anchor cable is used to repair bolting and grouting, through improving grouting joint and hole-sealed technology in construction, grouting efficiency is improved; 60 days after repairing, convergence between roof and floor is 79 mm, two-side displacement is 10 mm, so roadway deformation is effectively controlled, which provides reference for high ground pressure roadway repair in deep mine.