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首页> 外文期刊>American Journal of Traffic and Transportation Engineering >Numerical Analysis on the Stability of Layered Surrounding Rock Tunnel Under the Conditions of Different Inclination Angle and Thickness
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Numerical Analysis on the Stability of Layered Surrounding Rock Tunnel Under the Conditions of Different Inclination Angle and Thickness

机译：不同倾角和厚度条件下层状围岩隧道稳定性的数值分析

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摘要

To study the relationship between the stability of layered surrounding rock tunnel and the thickness and inclination angle of the layered rock, using the discrete element analysis software UDEC, the deformation and stress characteristics of layered surrounding rock tunnel are analyzed under different inclination angle and thickness conditions after the tunnel excavation. Meanwhile, the influence of different inclination angle and thickness on the stability of layered surrounding rock tunnel is studied. The results show that when the layer thickness and the excavation span are the same, the vertical displacement, horizontal displacement and maximum principal stress of the surrounding rock of the tunnel show a low of increasing first and then decreasing with the increase of the inclination angle of the structural plane. When the inclination angle and excavation span are same, the vertical displacement, horizontal displacement and maximum principal stress of layered surrounding rock of the tunnel gradually decrease with the increase of the layer thickness. When the inclination angle of the structural plane is 30°, the vertical displacement of the surrounding rock of the layered surrounding rock tunnel is the largest; When the inclination angle of the structural plane is 45°, the horizontal displacement of the surrounding rock of the layered surrounding rock tunnel is the largest; When the inclination angle of the structural plane is 45°, the layered surrounding rock tunnel principal stress is the largest.
机译：为了研究层状围岩隧道的稳定性与层状岩石厚度和倾角之间的关系，使用离散元分析软件UDEC，分析了层状围岩隧道在不同倾角和厚度条件下的变形和应力特性。隧道开挖后。同时，研究了不同倾斜角度和厚度对层状围岩隧道稳定性的影响。结果表明，当层厚和开挖跨度相同时，隧道围岩的垂直位移，水平位移和最大主应力呈现出先增大后减小的趋势，随倾斜角的增大而减小。结构平面。当倾角和开挖跨度相同时，层状围岩的垂直位移，水平位移和最大主应力随着层厚的增加而逐渐减小。当结构平面的倾角为30°时，层状围岩隧道的围岩垂直位移最大。当结构平面的倾角为45°时，层状围岩隧道围岩的水平位移最大。当结构面倾角为45°时，层状围岩主应力最大。

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