Research on Rapid Excavation Technology for Semi-coal Rock Roadway
In order to solve the problems of low excavation efficiency,high cost,and poor forming quality in semi coal rock tunnels,the blasting parameters were recalculated based on the site conditions and theoretical calculations of 23026 semi coal rock tunnels,and the layout and classification of blasting holes were completed.Then,based on FLAC3D software,the spacing between anchor rods and cables was optimized under the parameters of anchor rod and cable foundation support,and the optimal spacing between anchor rods and cables was obtained.Finally,a comprehensive evaluation was conducted on the application effect of rapid excavation technology,achieving the expected excavation effect and cost.
semi coal rock roadwayrapid excavationblastinter row spacingexcavation efficiency
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