基于主动支护设计的地下大跨硐室快速施工技术研究  

RESEARCH ON RAPID CONSTRUCTION TECHNOLOGY OF UNDERGROUND IONG-SPAN CHAMBER BASED ON ACTIVE SUPPORT DESIGN

作　　者：黄景新 Huang Jing-xin

机构地区：[1]中铁四局集团市政工程有限公司,合肥230022

出　　处：《建筑技术开发》2025年第4期27-29,共3页Building Technology Development

摘　　要：硬岩地层中地下大跨硐室衬砌具有混凝土浇筑困难、模板安装复杂、施工工期长等问题。依托实际工程,首先采用Q系统理论将衬砌优化为主动支护体系,在此基础上提出了分层开挖施工工艺、局部破碎区域加固技术、穹顶预应力锚杆施工技术、曲面湿喷技术,确保了施工安全和施工质量,为类似大跨硐室快速施工提供参考。The lining of underground large-span chambers in hard rock strata is characterized by difficulties in concrete pouring,complex formwork installation and long construction period.Based on the actual project,the lining was optimized as an active support system using Q-system theory,and on this basis,the layered excavation construction process,local crushed-area reinforcement technology,dome pre-stressing anchor construction technology,and curved surface wet-spraying technology were proposed to ensure the safety and quality of construction,which can serve as a reference for the rapid construction of similar large-span chambers.

关 键 词：大跨硐室 单层衬砌 主动支护 设计优化 快速施工 

分 类 号：TU758.11[建筑科学—建筑技术科学]