基于湿载-冻-融耦合作用的黄土灵敏度特性研究

基于湿载-冻-融耦合作用的黄土灵敏度特性研究摘要黄土是我国特有的一种土壤类型，其广泛分布于长江中下游地区和黄河中下游地区，因受自然环境和人类活动影响，具有较高的灵敏度特性。本文旨在研究湿载-冻-融耦合

-- 基于湿载冻融耦合作用的黄土灵敏度特性研究 摘要 黄土是我国特有的一种土壤类型，其广泛分布于长江中下游地区和 黄河中下游地区，因受自然环境和人类活动影响，具有较高的灵敏度特 -- 性。本文旨在研究湿载冻融耦合作用对黄土灵敏度特性的影响，并探究 影响机制。通过室内模拟试验和现场采集样品的方式进行研究，结论表 -- 明：湿载冻融耦合作用会加剧黄土的变形和稳定性破坏，主要表现在黄 土的体积收缩、强度降低、孔隙度增加等方面。此外，这一过程受到多 种因素的影响，包括原始含水量、冻融循环次数、融化速度等。综上所 述，本研究为更好地理解黄土灵敏度特性提供了参考和借鉴。 -- 关键词：黄土；灵敏度；湿载冻融；作用机制 Abstract Loess is aunique type of soil in China, which is widely distributed in the middle and lower reaches of the Yangtze River and the middle and lower reaches of the Yellow River. Due to the influence of natural environment and human activities, it has high sensitivity characteristics. The purpose of this study was to investigate the effect of wetting-freezing-thawing coupling on the sensitivity characteristics of loess and explore the influencing mechanism. The study was carried out through indoor simulation experiments and on-site sample collection. The results showed that wetting-freezing-thawing coupling would aggravate the deformation and stability damage of loess, mainly manifested in the volume shrinkage, strength reduction, and porosity increase of loess. In addition, this process was influenced by multiple factors, including initial water content, freezing-thawing cycle times, and melting speed. In summary, this study provides areference and reference for better understanding of the sensitivity characteristics of loess. Keywords: loess; sensitivity; wetting-freezing-thawing; mechanism 1. 引言 黄土是我国重要的地质遗产之一，也是我国的重要资源。但是，受