Abstract:
This paper numerically simulates the dynamic pressure roadway bolt net supporting, and a matching design for parameters of bolts and anchor cables based on roadway support in Huating mine, according to the engineering geological conditions, with the combination of theoretical analysis and numerical simulation.Roadway anchor support in site is researched, the deformation law of surrounding rock in roadway excavation and supporting is summarized, and the optimization scheme of roadway support is put forward.Combining with the theoretical analysis, in the design of anchor rod and anchor rope combined support, on the basis of using FLAC
2D software numerical simulation calculation, the changes of the displacement of surrounding rock before and after the supporting and the failure mechanism are analyzed.The support scheme is optimized, taking relative displacement of both roof-down and right-left as the first set of indicators and the stress or deformation as the second.