Research on Reasonable Support Parameters for Along Gob Tunnels in Island Faces
In response to the support effect of the excavation roadway along the goaf in the isolated working face of the soft sur-rounding rock goaf,this paper uses FLAC3D numerical simulation software to simulate and analyze the support effect of the ex-cavation roadway along the goaf in the isolated working face of the soft surrounding rock goaf under different support schemes,and studies the deformation evolution characteristics of the roadway working face.The research results show that the deforma-tion of tunnels with goaf on one side and both sides is similar.The goaf on the upper 7227 working face is beneficial for tunnel support,and the use of combined grouting reinforcement support method is more effective for soft and fractured surrounding rock tunnels.
island working facetunneling along the goafsupport
NETL
NSTL
万方数据
