Research on Support Technology for Soft Roof-Remaining Coal Roadway in Dynamic Pressure Affected Zone
The cross-section of the mining roadway in the thick coal seam mining face is generally large,with the continuous increase of mining depth and mining range,the difficulty of controlling the surrounding rock of the mining roadway increases,which requires effective control of the deformation of the surrounding rock in dynamic pressure tunnels.Taking the 11307 return crossheading of a certain coal mine as the research object,this paper analyzes the deformation characteristics and influencing factors of the surrounding rock of the soft roof-remaining coal roadway under the influence of dynamic pressure,and proposes specific support schemes.Overall,the roof is supported by a combination of anchor cables,grouting,steel reinforcement beams,and metal mesh,while the roadway is supported by a combination of anchor cables and metal mesh.After engineering application,the displacement and deformation of the 11307 return tunnel are relatively small,which can meet the needs of use.
dynamic pressure affected zonesoft roof-remaining coal roadwaysupport technologymining pressurethick coal seammining roadwaysurrounding rock support
万方数据
维普
