摘要
结合围岩地质条件、超前地质预报、现场监控量测数据,通过增加预留沉降量、调整各台阶上的作业工艺、增加辅助施工措施,确定大变形隧道施工的管理标准,并在施工过程中明确了每天的相对沉降值管理控制,细分了沉降点位在不同施工段内的累计沉降限值,并针对各项限值做出加固处理措施,实现动态管理大变形隧道的目标,总结出的经验在类似工程中值得借鉴与参考。
Combined with surrounding rock geological conditions,ahead of geological forecast,and scene monitoring and measuring data,through increased reserved settlement volume,adjustment of operation technology of every step,and increased auxiliary construction measures,management standard for large deformation tunnel construction is determined,and management control of daily relative settlement value is defined in construction process,accumulative settlement limited value of settlement point location in different construction stage is subdivided,and reinforcement processing measures for the limited value is made,thus dynamic management target for deformation tunnel is achieved,the summarized experience will serve references for similar engineering.
出处
《铁道建筑技术》
2015年第2期51-54,57,共5页
Railway Construction Technology
关键词
软弱围岩
大变形
沉降量管控
过程控制
weak surrounding rock
large deformation
settlement control
process control
