顺层页岩边坡稳定性离散元分析
发布时间：2018-08-09 07:26
【摘要】：以承张高速某顺层页岩边坡工程为依托,首先采用单轴压缩模拟实验与宏观力学参数值对比的方法确定出边坡各岩土层的细观参数。进而建立其离散元模型,分析其稳定状态,并对其失稳过程进行研究。结果表明:边坡中的全风化页岩层向下滑动,并在坡脚堆积;强风化页岩层和中风化页岩层未发生滑动,滑动面为全风化页岩层与强风化页岩层的交界面。模型中出现的裂纹主要以压裂纹为主,且主要分布在全风化层,而其他两层未产生裂纹。离散元模拟结果与赤平投影法分析结果一致。该模拟结果对工程的设计、施工具有指导意义。
[Abstract]:Based on the shale-rock slope engineering of Chengzhou-high speed, the meso-parameters of each rock and soil layer of the slope are determined by the method of uniaxial compression simulation experiment and the comparison of macroscopic mechanical parameters. Then the discrete element model is established, the stable state is analyzed, and the instability process is studied. The results show that the total weathered shale layer in the slope glides downward and accumulates at the foot of the slope, and there is no sliding between the strongly weathered shale layer and the moderately weathered shale layer, and the sliding surface is the interface between the fully weathered shale layer and the strongly weathered shale layer. The main cracks in the model are compressive cracks, which are mainly distributed in the weathered layer, but no cracks are found in the other two layers. The results of discrete element simulation are consistent with the results of plain projection method. The simulation results are of guiding significance to the design and construction of the project.
【作者单位】： 西安科技大学;
【分类号】：TU457
[Abstract]:Based on the shale-rock slope engineering of Chengzhou-high speed, the meso-parameters of each rock and soil layer of the slope are determined by the method of uniaxial compression simulation experiment and the comparison of macroscopic mechanical parameters. Then the discrete element model is established, the stable state is analyzed, and the instability process is studied. The results show that the total weathered shale layer in the slope glides downward and accumulates at the foot of the slope, and there is no sliding between the strongly weathered shale layer and the moderately weathered shale layer, and the sliding surface is the interface between the fully weathered shale layer and the strongly weathered shale layer. The main cracks in the model are compressive cracks, which are mainly distributed in the weathered layer, but no cracks are found in the other two layers. The results of discrete element simulation are consistent with the results of plain projection method. The simulation results are of guiding significance to the design and construction of the project.
【作者单位】： 西安科技大学;
【分类号】：TU457
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