深埋软岩输水隧洞全长预应力锚注支护效果评价

Evaluation on the Effect of Prestressed Anchor Grouting Support for Deep Buried Water Conveyance Tunnel in Soft Rock

支护结构优化设计对输水隧洞开挖施工具有重要意义,是工程施工顺利进行的必要保证。针对传统喷锚工艺存在不足,提出一种全长预应力锚的支护方案。现场对比实验结果显示,全长预应力锚支护方式可以有效提升隧洞围岩的安全性和稳定性,具有良好的工程应用价值,可以在相关类似工程的设计和建设中推广应用。

The optimal design of the support structure is of great significance to the excavation and construction of the water conveyance tunnel,and is a necessary guarantee for the smooth construction of the project.In view of the shortcomings of the traditional shotcrete anchor technology,a full length prestressed anchor support scheme is proposed.The field comparison test results show that the full length prestressed anchor support can effectively improve the safety and stability of the tunnel surrounding rock,which has good engineering application value and can be popularized in the design and construction of similar projects.