摘要
依托某浅埋暗挖隧道工程研究不同开挖进尺对隧道及周围环境的影响。结果表明:隧道左右线先后开挖时,地表最大沉降位于左线隧道洞口正上方处;且左线隧道上方的地表沉降远大于右线上方地表沉降;进尺开挖深度越大,隧道上方地表沉降和拱顶沉降越大,衬砌的正弯矩也越大;该隧道项目开挖进尺以2 m为最佳。
Based on a shallow buried tunnel project,this paper studied the influence of different excavation rates on the tunnel and the surrounding environment.The results show that when the left and right lines of the tunnel are excavated successively,the maximum surface settlement is located directly above the tunnel entrance of the left line.The ground surface settlement above the left line tunnel is much larger than that above the right line.The larger the excavation depth,the larger the ground settlement and vault settlement above the tunnel,and the larger the positive bending moment of the lining.The excavation footage of this tunnel project is most efficient at 2 m.
作者
姚磊
YAO Lei(Zhejiang Jiaogong Group Co.,LTD,Hangzhou,Zhejiang,310000,China)
出处
《建材技术与应用》
2025年第4期56-60,共5页
Research and Application of Building Materials
关键词
浅埋暗挖
地表沉降
弯矩
shallow excavation
surface subsidence
bending moments
