Long-Term Stability of Natural Slopes

斜坡的长期稳定性可能会改变 由于剪切力的逐渐减小 强度参数 季节性循环 润湿和干燥以及 地下水位可能会导致 天然抗剪强度降低 粘性土，从而增加 滑坡的可能性。 这项研究将 研究这些环境的影响 载荷和剪切强度的降低 天然粘土岩，粘性崩积层， 粘性冲积层，从长远来看， 斜坡或受斜坡影响的斜坡的稳定性 材料. 环剪试验将用于 测量永久剪切力的累积 变形和随后的降解， 抗剪强度 实验室数据将 应用于有记录的滑坡案例 验证研究结论。 的 结果将是发展的基础 缓解措施。

The long-term stability of slopes can change due to a progressive reduction in the shear strength parameters. Seasonal cycles of wetting and drying and fluctuations in the water table may contribute to the gradual reduction in the shear strength of natural cohesive soils thus, increasing the probability of landslides. The study will examine the effects of these environmental loadings and the reduction in shear strength of natural claystones, cohesive colluvium and cohesive alluvium, and on the long-term stability of slopes in or affected by these materials. Ring shear tests will be used to measure the accumulation of permanent shear deformation and the subsequent degradation in shear strength. Laboratory data will be applied to documented landslide case histories to validate the research conclusions. The results will be the basis for the development of mitigation measures.