摘要
锦屏二级水电站深埋长引水隧洞最大埋深达2525 m,绿泥石片岩洞段开挖期间出现大规模塌方、围岩初期支护后的围岩持续变形、临时支护结构损坏等情况,给引水隧洞整个施工过程带来了较大的影响。本文旨在总结深埋隧洞软岩的变形特征,为类似工程的提供借鉴。
The maximum depth of a deep buried long diversion tunnel in Jinping Second LevelHydropower Station is 2525m. During the period of excavating chlorite schist tunnel section appearsmassive landslides and continuous deformation of surrounding rock after initial support and structuraldamage after temporary support etc.. It brings a greater impact to the diversion tunnel throughout theconstruction period. This paper aims to summarize the deformation characteristics of soft rock in deeptunnel and provides a reference for the similar projects.
出处
《科技通报》
北大核心
2015年第3期108-111,共4页
Bulletin of Science and Technology
关键词
深埋条件
绿泥石片岩
变形
deep buried condition
Chlorite schist
deformation
