Analysis of the Utility Tunnel Joint's Stress Characteristics Under Well Point Precipitation Conditions


  • Ben Li
  • Xinsheng Zhang



Utility Tunnel; Wall Point Precipitation; Groundwater Level; Finite Element Model.


The method by which groundwater influences subsurface buildings is relatively complex in the groundwater-rich regions of southern China. Notably, it substantially affects the pipe corridor junctions, which are crucial to impermeability. In order to analyze the forces on the utility tunnel joints during well-point precipitation, numerical modeling of the utility tunnel joints using the well-point precipitation method based on Finite element software was carried out, and a precipitation model tank was made to verify the model parameters and boundary restrictions. The results indicate that under well-point precipitation, the force variation of the bottom plate is more significant than that of the top plate at the same port and that in the joint section close to the precipitation point, the force variation of the bottom plate can reach 2-3 times that of the top plate. The spigot joint's bottom plate has a maximum tensile stress of 319.52 kPa, which raises the possibility of tensile damage. The well-point dewatering method has a higher likelihood of bottom plate cracks, which makes it a critical component to be watched during construction and operation.


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How to Cite

Analysis of the Utility Tunnel Joint’s Stress Characteristics Under Well Point Precipitation Conditions. (2024). Academic Journal of Science and Technology, 11(2), 50-56.

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