Influence of burial depth on Soil Arch in Utility Tunnel

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Xu, X.^1 ; Ma, J.X.^1 ; Ma, H.M.^1

School of Human Settlements and Civil Engineering, Xi'An Jiaotong University, Xi'an, Shaanxi

710049, China^1

关键词: Action mechanisms;    Burial depths;    Guiding significances;    Inhomogeneous deformation;    Integrated utilities;    Subsurface excavation;    Utility tunnels;    Vertical load;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/5/052037/pdf
DOI  :  10.1088/1755-1315/153/5/052037

来源: IOP

【 摘 要 】

In mollisol subsurface excavation, the selection of the vertical load of utility tunnel will directly affect the economy and safety of the project. It is necessary to consider the effect of soil arch on the design of the integrated excavated tunnel in the mollisol stratum, which is related to the value of vertical load. From the aspects of stress field variation and inhomogeneous deformation, to obtain the results of the influencing factor, buried depth, we analyzed the action mechanism of soil arch pressure. In mollisol subsurface excavation of utility tunnel, the deeper buried depth, the more obvious the arch effect is. The influence of buried depth on the arch effect in mollisol has certain guiding significance for the value of vertical load of mollisol tunnel, which can provide the basis for the design of integrated utility tunnel.