市政技术2026，Vol.44Issue(3)：201-209,9.DOI:10.19922/j.1009-7767.2026.03.201
隧道下穿长水机场敏感区域施工技术与稳定性研究
Research on Construction Technology and Stability of Tunnel Passing through the Sensitive Area of Changshui Airport
尹兴勇1
作者信息
- 1. 天津中铁工程检测有限责任公司,天津 300000
- 折叠
摘要
Abstract
To address the challenges of structural safety assurance and settlement control during tunnel construction crossing the sensitive airport areas,this study examined the Changshui Airport tunnel project.By integrating 3D fi-nite element simulation with on-site monitoring,the impact of construction techniques and protective measures on stability was investigated.The research findings indicate that the surface settlement exhibits a"double-L"distribu-tion pattern with the tunnel advances,and the construction area affects a range of 20.0 meters;Characteristics of ground settlement perpendicular to the tunnel direction was in a"V"shape by bench method,and the tunnel center-line and both flanks were critical control zones;The three-step bench method with a 4.0 m spacing emerged as the optimal solution.When bench spacing increased from 4.0 m to 8.0 m,the surface settlement increased by 25.86％.The three-step bench method was superior to the conventional bench method in controlling surface subsidence and the number of bench steps influenced settlement.Unreinforced or single grouting/bolting reinforcement failed to meet settlement requirements.The combined grouting+bolting reinforcement reduced settlement by 55.81％.The effect of arch crown settlement was better than that of arch bottom heave.The control effectiveness ranking is:combined reinforcement＞grouting reinforcement＞bolting reinforcement.This research provides theoretical foundations and engineering references for controlling settlement and structural safety in sensitive areas such as tunnels crossing air-ports,and enhancing construction stability as well.关键词
隧道施工/现场监测/稳定性/台阶法/台阶间距/综合加固Key words
tunnel construction/on-site monitoring/stability/bench method/step spacing/comprehensive reinforcement分类
交通工程引用本文复制引用
尹兴勇..隧道下穿长水机场敏感区域施工技术与稳定性研究[J].市政技术,2026,44(3):201-209,9.
