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降雨引起的山体滑坡的稳定性分析,考虑到空气阻力延迟效应和横向漏
Li Li1, Hanjie Lin2, Yue Qiang2
1Department of Civil Engineering, Chongqing Three Gorges University, Wanzhou, Chongqing, 404100, China. lily6636694@163.com.
Scientific reports
|April 10, 2024
概括
这项研究引入了一种新的斜坡降雨透模式,结合空气阻力和横向透来提高准确性. 改进后的模型更好地预测了山体滑坡风险,为沉降下的斜坡提供了更可靠的安全评估.
科学领域:
- 地质技术工程 地质技术工程
- 水文学的水文学
- 环境科学 环境科学
背景情况:
- 暴雨引发的山体滑坡对生命和财产构成重大风险.
- 像Green-Ampt (GA) 这样的现有透模型在准确模拟复杂的斜坡条件方面存在局限性.
研究的目的:
- 开发一个改进的斜坡降雨透功能.
- 通过考虑空气阻力和横向透,提高滑坡稳定性分析的准确性.
主要方法:
- 修改了绿色Ampt (GA) 透模型.
- 由于透过程中孔隙空气被捕获而造成的内置空气阻力.
- 包括有限长度斜坡的横向漏效应.
- 使用整体剪断强度标准评估的坡度稳定性.
主要成果:
- 与其他方法相比,新模型与实验数据的一致性得到了改善.
- 斜坡安全系数随着尺寸的增加而降低,与斜坡角度和初始湿度相反相关.
- 透时间随着尺寸和斜率角度的增加而增加,与初始水分含量相反相关,并且降雨强度的影响较小.
结论:
- 拟议的透功能提高了滑坡风险评估的可靠性.
- 该模型提供了一个更现实的模拟雨量入斜坡的模拟,考虑到关键因素,如空气阻力和横流.
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