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<p>Experimental evaluations were conducted on the performance of birdcage resin anchor cables and their effects on the axial force of anchor cables during the construction of the water-rich section of the Haidong Tunnel within the Central Yunnan Water Diversion Project. The aim was to address the limitations of conventional support methodologies and high-prestress active support technologies. The results indicate that as borehole drainage increases, the rapid-setting anchor grout offers distinct advantages, albeit with limited seepage control capacity. To address this limitation, an optimized grout combination scheme and a two-tier safety early-warning criterion were proposed, thereby providing significant technical support for this tunnel and similar water-rich tunnel projects.</p>

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Research on a Combination Test of a High Pretension Cable Anchoring Agent for Surrounding Rock with Diverse Water-Rich States in Haidong Tunnel

  • 期刊论文

  • 发表日期：

    2026年7月7日

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  • Xiao-Tian Lei,
  • Zhi-Gang Tao,
  • Ke-Yuan Liu,
  • Rui-Xue Zhang,
  • Ming-Jiu Cai,
  • Xiao-Wei Fan

摘要

Experimental evaluations were conducted on the performance of birdcage resin anchor cables and their effects on the axial force of anchor cables during the construction of the water-rich section of the Haidong Tunnel within the Central Yunnan Water Diversion Project. The aim was to address the limitations of conventional support methodologies and high-prestress active support technologies. The results indicate that as borehole drainage increases, the rapid-setting anchor grout offers distinct advantages, albeit with limited seepage control capacity. To address this limitation, an optimized grout combination scheme and a two-tier safety early-warning criterion were proposed, thereby providing significant technical support for this tunnel and similar water-rich tunnel projects.