The Study on the Construction Technology of Large-Scale Underground Interchange Tunnels under the Rivers

Abstract:

A Large-scale underground interchange tunnels will be applied in the Chongqing Two Rivers Tunnel project with six crossings and four interchanges adopting NATM. The paper analyzes and discusses the whole-process construction mechanical behavior of the underground interchange by the numerical analysis method, at the same time considering the similar project established, and then suggests some important design parameters about crossings and close overlap interchanges between NATM tunnels, such as proper space of crossings and interchanges. Through the analyses, the paper suggests the design and construction method and construction organization project, especially for the crossings and close overlap interchanges between the NATM tunnels. The paper discusses the key problems of an underground interchange tunnels, and first suggests a mode how to construct an underground interchange tunnels. So, it is important in theory and practical engineering.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1583-1594
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1583
• Online since: May 2012
• Authors: Gen Qiao Zhu, Zhi Lin
• Keywords: Big Span, Crossings, Double Archtunnel, Numerical Analysis, Small-Interval Tunnel, Tunnel, Underground Interchange

References

[1] Sun Jun. Discussion on some key technical issues for design and construction of undersea tunnel [J]. Chinese Journal of Rock Mechanics and Engineering，2006（8）：1513-1521. (in Chinese)

[2] Zhen Mu-sheng, Liu Hui. The Important Problems about Gu Lou Underground Interchange Project in Nan Jing [J]. West-china Exploration Engineering，2001（6）：72-73.(in Chinese)

[3] Wu Bo, Liu Weining. 3D Simulation and Analysis on construction behavior of forked metro tunnel [J]. Chinese Journal of Rock Mechanics and Engineering，2004.9：3081-3086 (in Chinese)

[4] Gong Chengbing, Zhang Wuxiang, Yang Yanmin. Discussion on structural design and construction schemes for four-lane section in each separated hole of highway tunnels [J]. Highway，2004.6：177－182.

[5] Sun Jun. Some technical key issues on design and construction of under sea tunnels for Xiamen East Passage [A]. In：Proc. of 2005 Int. Forum on Tunneling in Shanghai—Large Diameter Tunnels and Urban Rail Transit Engineering Technology[C]. Shanghai：Tongji University Press，2005. 25–32.(in Chinese)

[6] The preliminary feasibility research report of Chongqing Chao Tianmen two rivers tunnels project[R]. Chongqing Communications Research & Design Institute in china, (2005)

[7] Soliman, E., Duddeck, H., and Ahrens, H., Two- and three-dimensional analysis of closely spaced double-tube tunnels, Tunneling and Underground Space Technology, 1993, Vol.8, No.1, pp:13-18

DOI: 10.1016/0886-7798(93)90130-n

[8] Chen Xianguo,Gao Bao. 2D-FEM numerical simulation for closely-spaced parallel tunnels in metro, Chinese Journal of Rock Mechanics and Engineering, 2002, 9.

[9] Hu Yuanfang. Stability analyses of surrounding rocks of double-hole urban tunnel with small interval, Chinese Journal of Rock Mechanics and Engineering, 2002, 9.

[10] Chen Weijun, Zhu zhonglong.A review on the technology used in closely overlapped tunnels,Modern Tunnelling Technology,2002, 01.

[11] Zhou Wenbo, Wu Huiming. Preliminary exploration of cross-over construction technology for sightseeing tunnel shield, China Municipal Engineering, 2002, 04.