摘要
为提升高速铁路隧道软硬组合薄层片岩变形段初支结构的稳定性,采用监测初支结构位移变形、初支背部围岩压力、初支钢架应力及围岩深部位移等方式,通过分析各部位位移及应力监测数据变化规律,提出初支结构快速成环、局部增强喷射混凝土强度、薄层片岩区增加锚杆长度及径向注浆等方法,为控制软硬组合薄层片岩隧道初支结构变形与混凝土开裂提供技术参考。
In order to improve the stability of the initial branch structure of the thin-bedded schist deformation section of the high-speed railway tunnel,the study conducts monitoring the displacement deformation of the primary branch structure,the pressure of the surrounding rock on the back of the primary branch,the stress of the primary steel frame and the deep part of the surrounding rock,etc.;analyzes the changing regulation of the displacement and stress monitoring data;and proposes the methods of rapid ring formation of initial support structure,local strengthening of shotcrete strength,increase of the length of anchor rod in thin layer schist area and radial grouting,which provide technical reference for controlling the deformation of initial support structure and concrete cracking of soft and hard combined thin layer schist tunnel.
作者
常建超
Chang Jianchao(China Railway 11 th Bureau Group 1 st Engineering Co.Ltd.,Xiangyang 441104,China)
出处
《黑龙江科学》
2023年第22期130-133,137,共5页
Heilongjiang Science
关键词
软硬地质
薄层片岩
初支结构
监测
稳定性
Soft and hard surrounding rock
Thin-bedded schist
Primary branch structure
Monitoring
Stability
