整个吸收范围的实验调查和预测模型,用于未受干扰的花岩残留土壤
Yu Zhang1, Lingjie Li2, Bangyan Hu3
1Zhejiang Province Engineering Research Center for Applied Technology of Digital Highways, Zhejiang Institute of Communications, Hangzhou, 311112, China. zhangyu0614@zjvtit.edu.cn.
Scientific reports
|March 11, 2026
概括
本研究引入了一种有效的方法,用于确定未受干扰的花岩残土 (UGRS) 的土壤水特性曲线 (SWCC). 结合过纸,蒸汽平衡和入孔径测量方法,为UGRS提供准确,全方位的SWCC数据.
科学领域:
- 地质技术工程 地质技术工程
- 土壤科学 土壤科学
- 环境科学 环境科学
背景情况:
- 不被干扰的花岩残土 (UGRS) 对于地质工程应用至关重要.
- 准确的土壤水特性曲线 (SWCC) 对于稳定性分析和基础设施开发至关重要.
- 了解UGRS在周期性环境条件下的行为是必不可少的.
研究的目的:
- 测量和比较UGRS的实验和毛孔结构衍生的SWCC.
- 确定一个最佳的方法,用于全方位的SWCC确定UGRS.
- 根据孔隙结构演变和循环效应,开发UGRS SWCC的预测模型.
主要方法:
- 使用压力板方法 (PPM),过纸方法 (FPM) 和蒸汽平衡方法 (VEM) 测量的土壤水特性曲线 (SWCC).
- 孔径大小分布 (PSD) 通过使用入孔径测量 (MIP) 来推导SWCC.
- 实验SWCC与MIP衍生的SWCC在各种湿干循环中的比较.
主要成果:
- 结合FPM,VEM和MIP,为UGRS提供可靠的全方位SWCC数据,缩短了测试时间.
- 从MIP衍生出的SWCC与PPM在工程关键的低吸收范围 (0-100kPa) 中非常接近.
- SWCC的配件参数与湿干周期呈现线性相关性,使预测建模成为可能.
结论:
- 结合FPM,VEM和MIP的方法是最优的,可以准确和高效地确定UGRS的全范围SWCC.
- 通过孔隙结构演变和循环效应,可以建立UGRS SWCC的预测模型.
- 这些发现为SWCC的确定和预测UGRS液压行为提供了有效的替代方案.
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