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.
关键词
动压影响区/松软留顶煤巷道/支护技术/采动压力/厚煤层/回采巷道/围岩支护
Key words
dynamic pressure affected zone/soft roof-remaining coal roadway/support technology/mining pressure/thick coal seam/mining roadway/surrounding rock support
维普
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