涨壳式注浆锚杆在隧道单层衬砌支护工程的应用分析
The application analysis of swelling grouting bolts in single shell lining tunnels
郭永建 1张闻博2
作者信息
- 1. 青岛国信胶州湾第二海底隧道有限公司,山东 青岛 266071
- 2. 中铁西南科学研究院有限公司,四川成都 611731
- 折叠
摘要
对涨壳式注浆锚杆在硬岩地层的适应性进行分析,并采用数值模拟和现场试验的方法,结合隧道斜井单层衬砌支护方案进行数值模拟和现场监测分析;数值计算结果表明,左侧节理裂隙发育区的锚杆轴力值较大;现场监测结果验证了数值计算的准确性,Ⅲ级围岩宜以锚杆轴力监测为主,位移监测为辅.
Abstract
This paper researched the adaptability of swelling grouting bolts in hard rockmass,numerical simulation and field testing method were used to the single shell lining support tunnel shaft.The numerical calculation results indicated that the largest bolt axial force at the joint fissures area of tunnel left.The field monitoring results confirmed the accuracy of the numerical calculations.In class Ⅲ surrounding rock,bolt axial was the main monitoring method,displacement monitoring as a supplement.
关键词
涨壳式注浆锚杆/受力分析/隧道/预应力/轴力Key words
swelling grouting bolts/mechanical analysis/tunnel/prestress/axial force引用本文复制引用
出版年
2024
NETL
NSTL
万方数据