Numerical simulation research on failure mechanism of dynamic pressure roadway and optimization of support parameters
Li Dequan
Ma Zhihui
Abstract：The Yima mining area has the characteristics of deep coal burial,thick coal seam and large in-situ stress.It is a typical"three soft"coal seam.Taking the transportation roadway of No.15130 working face of Xin'an Coal Mine in Henan Province as an exam-ple,using the FLAC numerical simulation software,the plastic zone and displacement of the dynamic pressure roadway during the exca-vation and mining periods were analyzed.Based on this,the supporting method of"grouting anchor cable+mining reinforcement"was proposed on the basis of the original supporting method.Finally,the rationality of the supporting method was verified based on the distri-bution of the plastic zone.It was concluded that the anchor rod can effectively cover the plastic zone during the excavation period,and the stability of the surrounding rock can be effectively controlled by reinforcing the anchor cable during the mining impact period.
Keywords："three soft"coal seamnumerical simulationgrouting anchorplastic zone
Publication Date：2025-02-27
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 47-53,57 )