Scholarlink

<p>Seepage control and stability analysis in rockfill dams with inclined cores are essential for structural safety, yet the influence of core materials and their placement remains insufficiently studied. Addressing this gap is crucial for optimizing design and ensuring reliable dam performance. With this consideration, this research examines seepage behavior and stability in rockfill dams using experimental and numerical models to assess the effects of core position and core materials like clay, sand, and a sand–clay mixture on hydraulic gradient, critical hydraulic conditions, and factor of safety (FOS). The findings indicate that a clay core reduces the phreatic line height at the dam’s toe by 37%, while a sand core reduces it by 16%, and the clay–sand mixture reduces it by 25%. Additionally, using a sand core results in the highest safety factor against the hydraulic gradient under critical conditions. A numerical analysis using GeoStudio software also explored the effects of core width, inclination, and drawdown on the safety factor, highlighting the importance of core material selection and design in maintaining dam stability. These findings emphasize the significance of proper core material selection and placement in ensuring dam safety.</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

Evaluating the impact of core position and material on seepage and stability of rockfill dam through experimental and numerical analysis

  • 期刊论文

  • 发表日期：

    2025年6月12日

查看全文
  • Subodh Shrivastava,
  • Vishwas Nandkishor Khatri,
  • Ashes Banerjee,
  • Srinivas Pasupuleti

摘要

Seepage control and stability analysis in rockfill dams with inclined cores are essential for structural safety, yet the influence of core materials and their placement remains insufficiently studied. Addressing this gap is crucial for optimizing design and ensuring reliable dam performance. With this consideration, this research examines seepage behavior and stability in rockfill dams using experimental and numerical models to assess the effects of core position and core materials like clay, sand, and a sand–clay mixture on hydraulic gradient, critical hydraulic conditions, and factor of safety (FOS). The findings indicate that a clay core reduces the phreatic line height at the dam’s toe by 37%, while a sand core reduces it by 16%, and the clay–sand mixture reduces it by 25%. Additionally, using a sand core results in the highest safety factor against the hydraulic gradient under critical conditions. A numerical analysis using GeoStudio software also explored the effects of core width, inclination, and drawdown on the safety factor, highlighting the importance of core material selection and design in maintaining dam stability. These findings emphasize the significance of proper core material selection and placement in ensuring dam safety.