明挖基坑对地铁盾构隧道影响的风险分析与控制
Risk Analysis and Control of Impact of Open-Cut Foundation Pit on Subway Shield Tunnel
杨仕彬1
作者信息
- 1. 中铁十四局集团有限公司 山东 济南 310051
- 折叠
摘要
杭州市艮山东路过江隧道工程隧道在YK0+674～YK0+736上跨地铁1号线云水站～下沙江滨站区间隧道.该段隧道采用明挖法施工,基坑深度9.6m～9.8m,基坑宽度47.9m,基坑底部距离隧道约5.2～5.3m.主体隧道在施工过程中不能影响下方地铁区间隧道结构安全和正常营运,施工难度和风险较大,一旦施工组织不合理或者发生安全事故,就会造成大的社会影响,给施工单位造成巨大经济和信誉损失.本文以该工程为例,对方案风险、施工过程风险进行风险分析及辨识,提出风险控制措施及建议,尽量减弱上跨地铁隧道基坑施工对既有盾构隧道的影响,保证盾构隧道结构的稳定及地铁运营的安全.希望本文可为类似工程提供参考.
Abstract
The Genshan East Road River Crossing Tunnel project in Hangzhou is a tunnel between Yunshui Station and Xiasha Jiangbin Station of Metro Line 1 on YK0+674～YK0+736.This section of the tunnel is constructed by open-cut method,the depth of the foundation pit is 9.6m～9.8m,the width of the foundation pit is 47.9m,and the distance between the bottom of the foundation pit and the tunnel is about 5.2m～5.3m.In the construction process,the main tunnel should not affect the safety of the tunnel structure and normal operation in the subway section below,and the construction is difficult and risky.Once the construction organization is unreasonable or a safety accident occurs,it will cause great social impact and cause huge economic and reputation losses to the construction unit.This paper takes the project as an example to analyze and identify the risk of the scheme and the construction process,and puts forward risk control measures and suggestions to minimize the influence of the foundation pit construction of the upper span subway tunnel on the existing shield tunnel,so as to ensure the stability of the shield tunnel structure and the safety of subway trains.This paper is expected to provide reference for similar projects.
关键词
上跨地铁/明挖/风险分析/风险控制Key words
upper spane subway/open-cut/risk analysis/risk control引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据