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

YANG Ziqi; GE Keshui; LI Hao

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

Tunnel Construction >

2016 , Vol. 36 >Issue 10: 1237 - 1244

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

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

YANG Ziqi ,
GE Keshui ,
LI Hao

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

Received date: 2016-04-25

Revised date: 2016-05-11

Online published: 2016-11-01

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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

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

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