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通过分析矿山节理裂隙岩体锚固机理,得出节理岩体的剪切强度和最佳锚固角等参数的本构关系。同时结合大型数值模拟软件FLAC3D,分别对节理化岩体双轨巷道未支护和锚注加固时的岩体巷道围岩进行了数值模拟分析。模拟结果表明:锚注加固支护极大增强了节理巷道围岩自身的承载能力,改善了巷道围岩的受力情况,限制了巷道岩体围岩的变形量。
By analyzing the anchoring mechanism of the fractured rock mass in the mine, the constitutive relationship between the shear strength of the rock mass and the optimal anchorage angle is obtained. At the same time, combined with large numerical simulation software FLAC3D, numerical simulation analysis of rock mass surrounding rock mass in unpaved and anchored reinforced concrete double-track roadway is carried out. The simulation results show that the bolting and grouting reinforcement greatly enhances the bearing capacity of the surrounding rock of the gateway and improves the stress of the surrounding rock of the gateway and limits the deformation of the surrounding rock of the tunnel.