近距离矿山法隧道施工既有地铁结构保护技术研究
RESEARCH ON PROTECTION TECHNOLOGY OF EXISTING SUBWAY STRUCTURE IN TUNNEL CONSTRUCTION WITH CLOSE DISTANCE MINING METHOD
占付民 1何寿海 1谢仁良1
作者信息
- 1. 中铁二局第一工程有限公司,贵阳 550000
- 折叠
摘要
暗挖隧道施工平行近接既有地铁隧道影响较大,如何保障平行近接既有结构安全是未来发展趋势.以广州地铁11号线中山八站工程施工为背景,通过数值模拟计算暗挖隧道平行施工对邻近既有5号线影响,进而提出了深孔隔离注浆控制运营轨道变形施工技术,形成了一种隧道全断面注浆限制排水量保护既有线施工技术及既有线保护综合处理措施技术.
Abstract
The construction of underground tunnels with parallel proximity to existing subway tunnels has a significant impact,and ensuring the safety of parallel proximity to existing structures is a future development trend.Based on the construction of Zhongshan Eighth Station on Guangzhou Metro Line 11,this study numerically simulated the impact of parallel construction of underground tunnels on adjacent existing Line 5,and proposed a deep hole isolation grouting control operation track deformation construction technology,forming a tunnel full section grouting limited drainage protection existing line construction technology,and proposing a comprehensive treatment measure technology for existing line protection.
关键词
平行近接/矿山法隧道/结构保护Key words
parallel proximity/mining method tunnel/structural protection引用本文复制引用
出版年
2024
NETL
NSTL
万方数据