在低温环境下对洛斯红色粘土复合材料接口的剪切行为进行实验调查
Jingjing Nan1,2, Bin Chen3, Qiang Sun4,5
1College of Geology and Environment, Xi'an University of Science and Technology, Xi'an, 710054, Shaanxi, China.
Scientific reports
|December 9, 2025
概括
湿度含量显著影响洛斯红色粘土接口的剪切强度,随着含量上升而降低. 低温对剪切强度产生复杂的三级影响,但湿度仍然是主要因素.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 环境地质 环境地质学
背景情况:
- 洛斯红色粘土界面滑坡是洛斯高原的一个重大危险.
- 低温对这些复合界面的剪切行为的影响还未得到充分研究.
研究的目的:
- 为了研究水分含量和低温对洛斯红色粘土复合体接口的剪切行为的影响.
- 了解洛斯红色粘土界面滑坡的形成和演变机制.
主要方法:
- 在洛斯红色粘土复合材料上进行了结和直接切割试验.
- 应用了各种水分含量和低温来模拟环境条件.
主要成果:
- 随着水分含量的增加,切割强度会下降,特别是在红色粘土聚合加剧异质性的14%以上.
- 剪切强度显示了温度下降的三阶段趋势:增加,减少,然后增加,由于水的迁移和相位过渡.
- 湿度被确定为影响接口剪切强度的主导因素.
结论:
- 了解湿度和温度的影响对于预测和减轻带地区的山体滑坡至关重要.
- 这些发现支持在季节性和永久土地区的工程项目的安全性.
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