摘要
蔓耗至金平高速公路草果山隧道出口洞口段穿越梯田区,为保证隧道进洞安全,控制洞口边仰坡滑移、坍塌风险,采用盖挖法进洞施工的方式。本文主要介绍了盖挖法与地表注浆预加固法、明挖法的比选,以及盖挖法的设计方案。根据现场实践表明,梯田区隧道进洞施工采用盖挖法能有效降低隧道进洞风险,保证施工安全,对类似工程具有一定的借鉴意义。
The exit section of Caoguoshan Tunnel from Wanshuang to Jinping Expressway passes through the terrace area.In order to ensure the safety of tunnel entry and control the risk of slippage and collapse of the slope on the side of the tunnel,the construction method of cover-digging method is adopted.This paper mainly introduces the comparison and selection of the cover-cut method,the surface grouting pre-reinforcement method,the cut-and-cover method,and the design scheme of the cover-cut method.According to the field practice,the use of cover and excavation method for tunnel entry construction in terraced areas can effectively reduce the risk of tunnel entry and ensure construction safety,which has certain reference significance for similar projects.
作者
陈星宇
杨永能
段晓彬
CHEN Xing-yu;YANG Yong-neng;DUAN Xiao-bin(Yunnan Provincial Transportation Planning and Design Research Institute Co.,Ltd.,Kunming 650041,China;Yunnan Construction Investment Second Construction Co.,Ltd.,Kunming 650201,China)
出处
《价值工程》
2022年第11期90-92,共3页
Value Engineering
关键词
公路隧道
盖挖法
进洞施工
highway tunnel
cover and excavation method
tunnel construction
