锚杆荷载受围岩参数影响的分析

Analysis of the Influence of Bolt Loading on Rock Mechanics Parameters

摘要: 根据锚杆杆体的轴向变形与围岩加固区的变形相协调,利用围岩加固区的变形确定锚杆的轴向变形,进而由应力应变关系求出锚杆荷载。在求加固区变形的过程中,将锚杆上的荷载近似的看作是分布在加固区边缘的均布荷载,求出硐室分别在地应力和锚杆荷载作用下的位移,锚杆两端的合位移即为加固区的变形,这样可以确定锚杆荷载与围岩参数的函数关系。
- 锚杆荷载 /
- 锚固长度 /
- 围岩变形 /
- 围岩弹性模量 /
- 围岩地应力
Abstract: The axial deformation of the bolt would coordinate the deformation of the reinforced area of the surrounding rock, the axial deformation of bolt can be determined by using the deformation of the reinforced area of the surrounding rock, and then the bolt loading is obtained by the stress-strain relationship. In the process of solving the deformation of reinforced area of the surrounding rock, the bolt loading is approximately as uniformly distributed loads distributed in the reinforced area edge, the rock cavern displacement in effect of geostress and bolt loading are solved, resultant displacement of both ends of bolt is the deformation of reinforced area, the function relation between bolt loading and rock mechanics parameters is determined.
- bolt loading /
- anchorage length /
- surrounding rock deformation /
- elastic modulus of surrounding rocks /
- surrounding rocks geostress

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