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在理论分析和数值计算的基础上，研究了不同岩性条件下支护阻力对围岩变形的作用和机理．阐述了硬岩巷道中支护阻力主要是控制塑性区的范围，软岩巷道中支护阻力提供围压，影响周边岩体的软化性，遏制围岩破碎区的发展，从而控制围岩的变形．结果表明，岩性质越差，支护阻力控制围岩变形的作用越大，巷道位移量与支护阻力呈负指数函数关系．
On the basis of theoretical analysis and numerical calculation, the effect and mechanism of support resistance on deformation of surrounding rock under different lithology conditions are studied. The support resistance of hard rock roadway is mainly controlled by the range of plastic zone. The support resistance in soft rock roadway provides confining pressure, which affects the softening of the surrounding rock mass and restrain the development of the surrounding rock mass, thus controlling the deformation of surrounding rock . The results show that the worse the rock properties, the greater the effect of supporting resistance to control the deformation of surrounding rock. The displacement of the roadway has a negative exponential function with the support resistance.