Research on rock burst prevention and control of near goaf side roadway in gently inclined coal seam
CAO Liping
Abstract：In view of the rock burst of the near goaf side roadway working face in gently inclined coal seam,the main factors affecting the rock burst of the near goaf side roadway was studied and ana-lyzed.The dynamic load action process of the near goaf side roadway under the action of far field mine earthquake and near field strong mine earthquake was obtained by simulation.The practical application shows that:After adopting comprehensive prevention and control measures such as roof pre-cracking blasting,large-diameter drilling pressure relief and coal body blasting pressure relief,combined with the combined supporting mode of"anchor cable+double net+large tray",the occur-rence frequency of large energy events over 104 J has been reduced by more than 50%,the average pe-riodic weighting step space has been reduced from 17.84 m to 11.98 m,and the pressure range has been reduced by more than 50%.The risk of rock burst of near goaf side roadway is effectively re-duced.
Keywords：gently inclined coal seamrock burstnear goaf side roadwaydynamic and static loadcom-bined supporting
Publication Date：2024-10-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 17-22,44 )