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为了研究不同岩石力学参数对深部巷道围岩稳定性的影响,选取与巷道围岩稳定性密切相关的弹性模量、抗拉强度、粘聚力、内摩擦角等4个力学参数,采用正交设计方法设计数值模拟计算分析,结果表明:不同因素组合下,顶板塑性区范围和变形量都要大于相同条件下底板和侧帮围岩;敏感性分析发现,内摩擦角、粘聚力对巷道围岩塑性区及变形量的影响程度较高,弹性模量和抗拉强度则相对较弱;同时,应用MATLAB软件拟合得到巷道围岩塑性区范围及变形量与各因素间的回归公式。
In order to study the influence of different rock mechanics parameters on the stability of surrounding rock in deep roadway, four mechanical parameters such as elastic modulus, tensile strength, cohesion and internal friction angle which are closely related to the stability of surrounding rock are selected. The results show that under different combination of factors, the plastic zone of the roof and deformation range are greater than those under the same conditions. Sensitivity analysis shows that the effect of internal friction angle and cohesion on the roadway The influence of plastic zone and deformation of surrounding rock is high, and the elastic modulus and tensile strength are relatively weak. Meanwhile, the regression formula of the plastic zone range and the amount of deformation and the various factors of the surrounding rock plastic zone is obtained by MATLAB software fitting.