Stability analysis of roadway surrounding rock considering the influence of structural plane
GAO Zhaoning
WEI Wenlong
LIANG Hongrui
Abstract：Aiming at the asymmetric failure phenomenon of inclined strata roadway,theoretical analysis and FLAC3D numerical sim-ulation method are used to study the bearing capacity and deformation and failure law of roadway under the influence of different strata dip angles and different positions of roadway,and the asymmetric deformation and failure mechanism of surrounding rock of inclined strata roadway is revealed.The results show that the bearing capacity of different positions around the roadway is different under the condition of different strata dip angles.The existence of structural plane reduces the stability of surrounding rock of road-way.When the shear stress at this position is greater than the shear strength,slip failure will occur.When the position of the road-way is fixed,there is the most unfavorable strata dip angle βmin.When the position of the structural plane coincides with βmin,the bear-ing capacity of the surrounding rock is the weakest,which is the most unfavorable to the stability of the roadway.Through the optim-ization of the roadway support scheme,the design of"anchor net+36 U shed+anchor cable beam+grouting"composite support scheme is designed,and the deformation of surrounding rock is effectively controlled.
Keywords：inclined stratasurrounding rock stabilityasymmetrical deformationnumerical simulationstructural plane
Publication Date：2025-12-20
Online Publishing Date：2025-12-29(First online date of this platform, not the publication date of the document)
Pages：10( 149-158 )