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Study on the Influence of Anchorage Angle on the Anchorage Effect of Soft-Hard Interbedded Toppling Deformed Rock Mass
KSCE Journal of Civil Engineering ( IF 2.2 ) Pub Date : 2020-06-22 , DOI: 10.1007/s12205-020-2386-y
Menglong Dong , Faming Zhang , Mengjiao Hu , Chang Liu

The toppling deformation of a rock mass is an important form of rock slope failure that often occurs during the excavation process of anti-dip rock slopes. The toppling deformation is very important for controlling slope deformation, determining reasonable anchorage support modes and ensuring the effectiveness of support measures during construction and operation. In this paper, an indoor test was designed and an indoor test model was developed according to engineering practice and the analogy method to study the influence of the anchorage angle and find the most suitable anchoring method for a soft-hard interbedded toppling deformed rock mass. The effect of different anchorage angles on the anchorage effect of toppled deformation slopes was studied by indoor tests. The number of cracks, the number of broken fractures, the average depth of broken fractures, the number of toppling-bending slabs, and the average bending angle of the model were determined through the tests. According to the comprehensive results of the test analysis and analytic hierarchy process, an anchorage angle of 45° is optimal. The results obtained by the test analysis and the analytic hierarchy process were consistent. The test and analysis results have a guiding significance for engineering applications and help to select the best anchorage angle and anchorage mode for actual soft-hard interbedded toppling deformation slopes.



中文翻译:

锚固角度对软硬夹层倒塌变形岩体锚固效果的影响研究

岩体的倾倒变形是岩质边坡破坏的一种重要形式,经常发生在反倾角岩质边坡的开挖过程中。倾倒变形对于控制边坡变形,确定合理的锚固支护方式以及确保施工和运营过程中支护措施的有效性非常重要。本文根据工程实践和类比方法,设计了室内试验,并建立了室内试验模型,研究了锚固角度的影响,找到了最适合软硬夹层倾覆变形岩体的锚固方法。通过室内试验研究了不同锚固角度对倒塌变形边坡锚固效果的影响。裂纹数,断裂数,通过测试确定了断裂的平均深度,倾覆弯曲平板的数量以及模型的平均弯曲角度。根据测试分析和层次分析法的综合结果,最佳锚固角为45°。通过测试分析和层次分析过程获得的结果是一致的。测试和分析结果对工程应用具有指导意义,有助于为实际的软硬夹层倾覆变形斜率选择最佳的锚固角度和锚固方式。通过测试分析和层次分析过程获得的结果是一致的。测试和分析结果对工程应用具有指导意义,有助于为实际的软硬夹层倾覆变形斜率选择最佳的锚固角度和锚固方式。通过测试分析和层次分析过程获得的结果是一致的。测试和分析结果对工程应用具有指导意义,有助于为实际的软硬夹层倾覆变形斜率选择最佳的锚固角度和锚固方式。

更新日期:2020-07-14
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