Numerical Simulation of Excavation Sequence of Heading of Singletube Doubledeck Tunnel Based on Solidfluid Coupling

doi:10.3973/j.issn.1672-741X.2016.10.012

Tunnel Construction ›› 2016, Vol. 36 ›› Issue (10): 1237-1244.DOI: 10.3973/j.issn.1672-741X.2016.10.012

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Numerical Simulation of Excavation Sequence of Heading of Singletube Doubledeck Tunnel Based on Solidfluid Coupling

YANG Ziqi¹, GE Keshui¹, LI Hao²

（1. School of Engineering and Technology, China University of Geosciences, Beijing 100083, China; 2. School of Civil Engineering, Chongqing University, Chongqing 400044, China)

Received:2016-04-25 Revised:2016-05-11 Online:2016-10-20 Published:2016-11-01

Abstract

Abstract:

The construction of a singletube doubledeck tunnel in Liulitun, Chaoyang District in Beijing is analyzed by numerical simulation and site monitoring data, so as to predict and control the construction risk. Some conclusions are drawn as follows: 1) The optimal heading excavation sequence is obtained by analyzing variation of stress field, displacement field and pore water pressure with/without consideration of water seepage action. 2) The influence of water seepage field on stress field and displacement field is studied. Finally, Some countermeasures are proposed.

Key words: construction sequence of heading, singletube doubledeck tunnel, solidfluid coupling, FLAC3D

CLC Number:

U 455

YANG Ziqi, GE Keshui, LI Hao. Numerical Simulation of Excavation Sequence of Heading of Singletube Doubledeck Tunnel Based on Solidfluid Coupling[J]. Tunnel Construction, 2016, 36(10): 1237-1244.

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Numerical Simulation of Excavation Sequence of Heading of Singletube Doubledeck Tunnel Based on Solidfluid Coupling

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