华东交通大学学报Issue(1)：89-93,5.
大直径泥水盾构穿江底深槽段开挖面稳定性研究
Study on Excavation Face Stability of Large-diameter Slurry Shield in Deep Groove
黄程俣 1王炳龙1
作者信息
- 1. 同济大学道路与交通工程教育部重点实验室，上海 201804
- 折叠
摘要
Abstract
In large-diameter slurry shield tunnel construction, the excavation face stability problem is prominent, but the study on excavation face stability and relevant influence factors for sandy and shallow overburden soil with high water permeability layer has not been mature. Based on numerical simulation of finite element model, this study explores effects of such factors as different friction angles, depths of water, buried depth of shield and excavation surface supporting stress on the excavation face stability. Besides, it discusses the relationship be-tween various factors for the large-diameter slurry shield tunnel excavation face stability. Results show that, fric-tion angle change has significant effects on shield tunnel excavation face while the depth change of water shows no effect; the excavation surface deformation direction changes when λ is between 0.8~0.9, and excavation sur-face deformation reaches the minimum whenλis between 0.9~1.关键词
泥水盾构/开挖面/稳定性/支护应力比Key words
slurry shield/the excavation face/stability/supporting stress ratio分类
建筑与水利引用本文复制引用
黄程俣,王炳龙..大直径泥水盾构穿江底深槽段开挖面稳定性研究[J].华东交通大学学报,2016,(1):89-93,5.
