DOI: 10.11799/ce201706013
Research and application of surrounding rock reinforcement technologyunder mining disturbance for main roadway group in coal seam
MENG Jie
Abstract：Aiming at the serious influence and damage of main roadway group in coal seam under mining disturbance of working surface mining in east wing of Wangcun Coal Mine,the control thinking was proposed comprising surrounding rock structure reinforcement with anchor-spray-grouting,and roadway surrounding rock stability controlling.Based on the structure mechanism of anchor-spray-grouting in roadway surrounding rock,and according to the COMSOL simulation,the superfine cement was applied,the water-to-cement ratio is 1.5∶1,for layered coupling grouting reinforcement.Field drilling peep and mine pressure observation results show that: the grouting effect is favorable,after the roadway stabilized the two sides convergence is within 120mm,roof-to-floor convergence is within 90mm,the largest section convergence rate is within 5%.
Keywords：coal roadwayanchor-spray-groutingCOMSOL simulationgrout featuresstrata behaviors observation
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 43-46 )