37 / 2025-07-10 23:26:47
Instability and deformation behaviors of root-reinforced soil under constant shear stress path
root reinforcement,rainfall infiltration,constant shear stress path,liquefaction instability,slope engineering
摘要待审
Xuan Zou / Wuhan University
Dian-Qing Li / Wuhan University
Shun Wang / Wuhan University
Shixiang Gu / Yunnan Institute of Water and Hydropower Engineering Investigation, Design and Research
Wei Wu / University of BOKU, Vienna
Climate change is becoming a greater global challenge, leading to more frequent and intense extreme weather events, which in turn increase mountain hazards like shallow landslides and soil erosion. Ecological slope protection using vegetation has gained increasing attention to mitigate natural disasters in recent years. While numerous studies have demonstrated the contribution of root systems to soil reinforcement, the comprehensive impact of roots on soil mechanical response under rainfall scenarios remains elusive. This study investigated the instability and deformation behaviors of root-reinforced soil through constant shear drained (CSD) tests. The role of root characteristics, including biomass, diameter, and length, in modulating the shear strength, instability and deformation behaviors of soils was investigated. The results indicate that the shear strength and stability of root-reinforced soil, as well as the inhibition effect of root on contractive deformation after the initiation of instability, increasing with greater root biomass and length and smaller root diameter. Moreover, due to the potential weak interfaces, fine or stiff long roots appear to increase the likelihood of volumetric dilation in root-reinforced soil at the later stage of unstable deformation. However, this dilatancy can be effectively resisted by increasing root planting density to form the root network. Furthermore, our experiments suggest that herbaceous vegetation with finer and longer roots is more effective in mitigating static liquefaction of soils induced by rainfall infiltration. This study helps develop a predictive constitutive model for root-reinforced soils and supports future bioengineering slope design.

 
重要日期
  • 会议日期

    08月23日

    2025

    08月26日

    2025

  • 07月10日 2025

    初稿截稿日期

  • 08月26日 2025

    注册截止日期

主办单位
Southwest Jiaotong University, China (SWJTU)
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
承办单位
Southwest Jiaotong University, China (SWJTU)
International Consortium on Geo-disaster Reduction (ICGdR)
UNESCO Chair on Geoenvironmental Disaster Reduction
联系方式
移动端
在手机上打开
小程序
打开微信小程序
客服
扫码或点此咨询