摘要
贵州省黔东南地区砂质板岩隧道在进洞时有洞口塌方率大、进洞难度较大等问题。板岩冲沟地段在下雨过后会对隧道边仰坡施工造成较大影响。砂质板岩隧道进洞经验不足也是导致砂质板岩地区隧道进洞困难主要原因。主要通过结合下归里隧道实例阐述砂质板岩隧道洞口边仰坡施工造成滑移现象的主要因素,并提出相关措施。
There are many problems in the sandy slate tunnel in the southeast of Guizhou Province,such as large cave in rate and difficulty in entering the tunnel.Slate gully section will also have a great impact on the construction of the tunnel side slope after the rain.The main reason for the difficulty of tunnel access in sandy slate area is that the tunnel access experience is insufficient.Based on the example of xiaguili tunnel,this paper expounds the main factors of the sliding phenomenon caused by the construction of the front slope at the entrance of the sandy slate tunnel,and puts forward the relevant measures.
作者
杨奎
余斌
李敬国
焦磊
YANG Kui;YU Bin;LI Jingguo;JIAO Lei(NO.1 Engineering Co.,Ltd of FHEC of CCCC,Beijing 102205,China)
出处
《施工技术》
CAS
2020年第S01期751-753,共3页
Construction Technology
关键词
隧道
覆盖层
注浆
防护
安全
tunnels
overburden
grouting
protection
safe
作者简介
杨奎,工程师,E-mail:578338817@qq.com
