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基于流水模型的测试,研究不同降雨模式引起的累积滑坡的变形机制
Wu Yi1,2, Hong Luo1,2, Xiaohu Huang1,2
1College of Civil Engineering and Architecture, China Three Gorges University, Yichang, China.
PloS one
|August 28, 2025
概括
复杂的降雨模式显著影响滑坡风险,特别是在极端气候地区. 这项研究揭示了降雨强度和时间如何通过改变孔水压力和剪切强度来驱动滑坡变形, 这对于预警系统至关重要.
科学领域:
- 地质工程
- 环境科学
- 自然危害研究
背景情况:
- 全球环境压力的加剧增加了山体滑坡的风险,特别是在极端气候地区的暴雨.
- 了解复杂降雨模式下的滑坡变形和不稳定机制对于社会稳定和可持续发展至关重要.
- 现有的降雨引发的山体滑坡研究需要进一步研究复杂的降雨情景.
研究的目的:
- 在各种降雨模式下系统地描述王家坡滑坡的变形特征.
- 阐明不同降雨模式对积累的山体滑坡变形和故障机制的影响.
- 在复杂的降雨模式下了解滑坡变形机制的关键差距.
主要方法:
- 综合实地调查,变形监测和降雨数据分析.
- 使用相似性理论模拟四种不同的降雨模式的Flume模型实验.
- 使用多个传感器实时监测斜坡位移,孔水压,土壤压力和水分含量.
- 实验数据的统计处理,与现场数据进行比较分析,并进行Geo-Studio数值模拟以验证.
主要成果:
- 降雨强度和时间序列对山体滑坡的变形产生重大影响.
- 孔水压和剪切强度的变化是导致山体滑坡不稳定的关键因素.
- 地滑失效过程的四个不同阶段被划定,详细描述了不稳定机制的时间和空间演变.
结论:
- 这项研究对滑坡监测和预警系统提供了宝贵的见解.
- 调查结果为脆弱地区的山体滑坡灾害监测和预防策略提供了信息.
- 了解复杂的降雨模式影响对于减轻山体滑坡风险至关重要.
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