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针对深部巷道开挖后围岩非对称变形现象,基于结构力学相关理论,对巷道围岩变形破坏进行了不同分区岩体梁的力学模型构建及数值模拟分析。得出各分区岩体梁变形的弯矩方程和挠度方程,理论分析了各分区岩体梁的变形最大弯矩及最大挠度位置。模拟结果对构建的力学模型进行了有力验证,得出各分区岩体梁的危险位置,可对相关问题提供一定的理论参考。
Aiming at the asymmetrical deformation of surrounding rock after deep excavation, based on the theory of structural mechanics, the mechanical model construction and numerical simulation of rock mass with different zoning are carried out for the deformation and failure of surrounding rock. The bending moment equation and deflection equation of the deformation of the rock mass beam are obtained, and the maximum deformation moment and the maximum deflection position of the rock mass beam in each section are analyzed theoretically. The simulation results validate the mechanical model and obtain the dangerous position of the rock mass beam in each subarea, which can provide some theoretical references for the related problems.