Numerical Study on the Effect of Twin-Tube Shield Excavation on Adjacent Pipelines

Abstract:

Based on Dalian subway line 2 from Chun-guang street station to Xiang-gong street station,the three dimensional finite element model was established using FLAC3D software , the shield excavated surface against the pressure, the stress release, the shield tail escape and grouting. The numerical result indicated that the pipeline displacement increases gradually with the advance of the tunnel excavation. When one-sided tunnel excavation is carried out, the largest displacement is located at the tunnel axis, the settling curve basically conforms to the normal distribution curve with the unimodal characteristic. The excavation of right-side tunnel is disadvantageous to the left-side tunnel. The analysis indicated that the pipeline is in a secure state. The work in this paper provided theoretical basis and the practical guidance to this project.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1491-1496
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1491
• Online since: May 2012
• Authors: Xin Wang, De Shen Zhao, Meng Lin Xu
• Keywords: FLAC^3D, Numerical Simulation, Shield Bored Tunnel, Underground Pipeline

References

[1] O'Rourke T D, Trautmann C H. Buried Pipeline Response to Tunneling Ground Movements [A]. Europipe'82[C]. Switzerland: Access Conferences Ltd, 1982,9-15.

[2] Hunter.A, in:Proceedings of the Institution of Civil Engineers: Geotechnical Engineering,2005,158(3):159-167.

[3] Wu Bo, Gao Bo. Construction on the adjacent Metro tunnel numerical simulation of the impact of the pipeline [N]. Chinese Journal of rock mechanics and engineering, 2002,21 increase (2): 2451-5456. "In Chinese"

[4] Guan Yongping, Guo Long, Li Yunlong, and so on. The metro excavation on adjacent numerical analysis on effects of underground pipelines [N]. Journal of water resources and construction, 2010,8. (2): 11-13. "In Chinese"

[5] M.Luis,M.Jose M.Prediction, in:Canadian Geetechnical Journal,2002,39(6)：1273—1287．

[6] Zhang Peng, Han warmth. The metro study on the deformation of underground pipelines under construction damage control standard [A]. Proceedings of the 2nd National Conference on safety and protection engineering, 2010,8:152-158. "In Chinese"

[7] Wu Bo,Gao Bo, Suo Xiaoming,in: Rock and soil mechanics, 2004,4,25 (4): 657-662. "In Chinese"

[8] Laborites, erect, Wang Manchu, in:China Railway science, 2006.11,27 (6):124-127.

[9] Wang Ting, Liu Weining, Li Ning, in: China Railway science, 2006.11,27 (6): 117-123. "In Chinese"

[10] Stephanie Legrand. in :The soda ash industry, 2000, (2): 38-41.

[11] Li Shucai, Zhu Weishen, Chen Weizhong. Xiaolangdi underground cavern construction order optimization analysis [N]. Journal of China Coal Society, 1996, 21 (4): 393-397. "In Chinese"

[12] Kong Cunliang. In: Northern Jiaotong, 2005, (2): 111-113. "In Chinese"