Scholarlink

<p>The occurrence and development of geological disasters such, as collapses, landslides and debris flows, in loess regions are closely associated to the disintegration of loess. This study experimentally investigates the disintegration characteristics of intact loess at various depths within an excavated slope using a self-developed disintegration device, combined with Grey correlation analysis. Four key factors including the moisture content, void ratio, clay particle content and pH of the loess samples were the focal points of this study. The results indicate that the disintegration progressions of samples at different depths are similar and can be divided into four stages, namely soaking, softening, collapsing, and disappearing. The disintegration velocity decreases with depth, reaching a minimum of 0.21%/s at 11&#xa0;m, a 79% reduction compared to the maximum at 2&#xa0;m. Furthermore, an increase in moisture content and clay particle content, along with a decrease in void ratio, leads to a reduced disintegration velocity. The analysis suggests that pH has no significant effect on loess disintegration. Grey correlation analysis identifies the void ratio as the most influential factor, followed by moisture content and clay particle content. Additionally, this study provides insights into the intrinsic mechanisms of loess disintegration.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Disintegration Characteristics of Intact Loess on an Excavated Slope: An Experimental Study

  • 期刊论文

  • 发表日期：

    2025年2月26日

查看全文
  • Changhui Gao,
  • Guangyin Du,
  • Yankai Wu,
  • Mei Bai,
  • Lulu Liu,
  • Xiaoyan Liu

摘要

The occurrence and development of geological disasters such, as collapses, landslides and debris flows, in loess regions are closely associated to the disintegration of loess. This study experimentally investigates the disintegration characteristics of intact loess at various depths within an excavated slope using a self-developed disintegration device, combined with Grey correlation analysis. Four key factors including the moisture content, void ratio, clay particle content and pH of the loess samples were the focal points of this study. The results indicate that the disintegration progressions of samples at different depths are similar and can be divided into four stages, namely soaking, softening, collapsing, and disappearing. The disintegration velocity decreases with depth, reaching a minimum of 0.21%/s at 11 m, a 79% reduction compared to the maximum at 2 m. Furthermore, an increase in moisture content and clay particle content, along with a decrease in void ratio, leads to a reduced disintegration velocity. The analysis suggests that pH has no significant effect on loess disintegration. Grey correlation analysis identifies the void ratio as the most influential factor, followed by moisture content and clay particle content. Additionally, this study provides insights into the intrinsic mechanisms of loess disintegration.