Research on the design scheme of coal mine material roadway mining along goaf
In order to further improve the recovery rate of mine resources and enhance the economic benefits of the mine,after research,a goaf retaining roadway was implemented for the 3-down 209 material roadway,which was used as the 3-down 207 material roadway.Based on recent research results and combined with the actual situation of the mine,a design plan for mining along the goaf of the 3-layer 209 material roadway has been formulated.Through practical monitoring,the displacement of the two sides and the top and bottom sides meets the design requirements,and the deformation control effect of the surrounding rock is obvious,which has improved the economic benefits of coal mine production.
coal mine tunnelsleaving lanes along the goafcutting top pressure reliefmining technology
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维普
