Pressure from surrounding rock of three shallow tunnels with large section and small spacing
作者： Xiao-li Yang , Qi-yun Jin , Jun-qiu Ma
DOI: 10.1007/S11771-012-1285-X
关键词:
摘要: With the increasing traffic demand, closely built three or more tunnels with large section play a significant role in tunnel construction. However, interaction among has important influences on security and economy of engineering, calculation pressure from surrounding rock during excavation is one problems that need to be solved urgently. Based practical engineering tunnels, load model was proposed consideration sequence between tunnels. In comparison single tunnel, construction mechanical characteristics were analyzed. The results show calculated by current design code not reliable, force increases spacing
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