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Shallow chalk quarry stability using an original shear strength reduction approach

机译:使用原始抗剪强度降低方法的浅白垩采石场稳定性

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摘要

Unexploited underground quarries may represent a potential hazard for the surrounding urban environment. In this context, this work presents a stability study of quarries in North France. A shear non-uniform non-homogeneous degradation approach is proposed for the stability study. The presence of joints in the chalk continuum is considered by using an anisotropic plasticity model accounting for the accumulation of permanent strains along these joints. Stability analysis using proposed degradation approach is performed and compared with the conventional shear strength reduction approach. The comparison shows that the proposed degradation approach might be an alternative to conventional shear strength reduction approach.
机译:未开发的地下采石场可能对周围的城市环境造成潜在危害。在这种情况下,这项工作提出了对法国北部采石场稳定性的研究。提出了一种剪切非均匀非均匀降解方法进行稳定性研究。通过使用各向异性可塑性模型来考虑粉笔连续体中关节的存在,该模型考虑了沿这些关节的永久应变的累积。使用建议的降解方法进行稳定性分析,并将其与常规剪切强度降低方法进行比较。比较表明,所提出的降解方法可能是传统剪切强度降低方法的替代方法。

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