Research and Application of Stability Control Technology for Surrounding Rock of Large Diameter Coal Bunker
According to the actual situation of frequent damage to the coal bunker caused by mining influence in the third level coal bunker of Hemei No.3 Mine,and through analysis of the deformation characteristics of the coal bunker,a"anchor net spraying+fastening rebar+pouring concrete"support scheme is proposed.The support scheme is optimized using FLAC3D numerical software and the final scheme is determined.The on-site practice shows that this support scheme enhances the bearing strength of the coal bunker surrounding rock and support body,enhances the active bearing capacity of the coal bunker,effectively controls the convergence deformation of the coal bunker and collapse phenomenon of the bunker wall,greatly reduces maintenance quantity,and improves the service life of the coal bunker.
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