矿山裂隙岩体锚注机理及数值模拟研究

Study on Numerical Simulation and Bolt Grouting Mechanism of Mine Fracture Rock Masses

摘要: 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FLAC^3D,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。
- 最佳锚固角 /
- 节理弱面 /
- 抗剪强度 /
- 数值模拟
Abstract: The constitutive relation such as shear strength and optimal anchoring angle of jointed rock masses are obtained by analyzing the bolt grouting mechanism of mine joint fissure rock masses.The rock roadway of highly-jointed double-track roadway is simulated respectively by FLAC^3D software under the condition of no-support and bolting and grouting.The simulation results show that the support with bolting and grouting enhances the bearing capacity of jointed roadway,improves the stress station,and limits the deformation of the jointed roadway rock.
- optimal anchoring angle /
- joints weak face /
- shear strength /
- numerical simulation

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