Numerical investigation of the effects of new tunnel on deformation of existing tunnel

Publish Year: 1400
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

TETSCONF07_026

تاریخ نمایه سازی: 25 خرداد 1400

Abstract:

This paper investigates the construction of tunnels for urban equipment and infrastructure along with existing tunnels in cities. For this purpose, a basic two-dimensional model using finite elements (FE) is modeled for a tunnel with a diameter of ۵ meters and a second tunnel with different dimensions. Then, the effect of the distance of the second tunnel, which includes ۶, ۷, ۹ and ۱۱ meters (center by center), and the effect of the diameter of the second tunnel, which includes ۳, ۴ and ۵ meters, are investigated. To evaluate the results, the horizontal, vertical and total displacement of the main tunnel after digging the second tunnel has been investigated. The results show that with increasing the diameter of the second tunnel from ۳ to ۵, the horizontal, vertical and total displacement changes of the second tunnel increase. Also, reducing the distance of the second tunnel from ۱۱ to ۶ meters will increase the deformation of the tunnel in different directions. Finally, the results show that the relative position and diameter of the second tunnel can have impact on the deformation of first tunnel.

Authors

Abolfazl Baghbani

PhD candidate, School of Engineering, Deakin University, Geelong, Australia

Susanga Costa

Senior Lecturer, School of Engineering, Deakin University, Geelong, Australia

Mohammad Mahdi Shalchiyan

PhD candidate, School of Engineering, Guilan University, Rasht, Iran