摘要
基于地层损失原理,对隧道开挖诱发地表沉降三维理论解进行了修正。以重庆市某在建隧道工程为背景,综合应用了室内相似模型试验和三维扫描技术,分析了隧道埋深和开挖进尺对地表沉降变化的影响规律,验证了三维地表沉降修正理论解的可行性。结果表明:随着隧道埋深增加,沉降槽区域也随之增大,地表最大沉降值逐渐减小;隧道开挖进尺的增加对沉降槽和地表最大沉降值的影响并不显著。
Based on the principle of stratum loss, 3D theoretical solution of ground settlement caused by tunnel excavation is modified. Taking a tunnel construction in progress in Chongqing city as an example, the indoor similar model test and 3D scanning technology are comprehensively applied to analyze the influence law of tunnel buried depth and excavation footage on ground settlement. Then the feasibility of the modified 3D surface settlement theoretical solution is verified. The results show that the affected area of the settlement trough will expand continuously with increase of the buried depth, while the maximum ground settlement value will gradually decrease;The impact of increase of the tunnel excavation footage on the settlement trough and the maximum ground settlement are not significant.
作者
孙伟
Sun Wei(The Fifth Engineering Co.,Ltd.,China Railway 14th Construction Bureau Group,Jining 272117,China)
出处
《市政技术》
2022年第10期107-112,共6页
Journal of Municipal Technology
基金
重庆市技术创新与应用发展专项(cstc2020jscx-msxmX0130)
山地城市轨道交通控制保护区范围内重大风险源典型工程关键建设技术研究与应用。
关键词
地表沉降
三维预测模型
径向收缩
隧道埋深
开挖进尺
ground settlement
3D prediction model
radial shrinkage
tunnel buried depth
excavation footage
