Particle flow simulation of seepage erosion around shield tunnel

Dong Mei Zhang; Cheng Peng Gao; Zhen Yu Yin; Ru Lu Wang; Tian Liang Yang

doi:10.16285/j.rsm.2017.S1.053

Particle flow simulation of seepage erosion around shield tunnel

Dong Mei Zhang, Cheng Peng Gao, Zhen Yu Yin, Ru Lu Wang, Tian Liang Yang

Research output: Journal article publication › Journal article › Academic research › peer-review

12 Citations (Scopus)

Abstract

For tunnels built in silty sand, the tunnel leakage can carry the fine particles into tunnels and generate seepage erosion, which will result in the tunnel settlement and damage the tunnel serviceability. This paper presents the tunnel displacement, soil stress distribution and ground settlement due to seepage erosion by using the discrete element method (DEM) simulation. The results show that the tunnel displacement and ground settlement increase linearly with the particles loss ratio. Particle arch formed around the erosion seam will redistribute the soil pressure; and it can lead to further expansion of the erosion seam and accelerate the seepage erosion process. And the seepage erosion in the inverse of the tunnel is more risky to tunnel serviceability than that in the tunnel waist and crown.

Original language	English
Pages (from-to)	429-438
Number of pages	10
Journal	Yantu Lixue/Rock and Soil Mechanics
Volume	38
DOIs	https://doi.org/10.16285/j.rsm.2017.S1.053
Publication status	Published - 10 Jun 2017
Externally published	Yes

Keywords

Numerical simulation
Particle flow
Seepage erosion
Tunnel-soil calculation model

ASJC Scopus subject areas

Civil and Structural Engineering
Geotechnical Engineering and Engineering Geology
Soil Science

More information

10.16285/j.rsm.2017.S1.053

Cite this

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title = "Particle flow simulation of seepage erosion around shield tunnel",

abstract = "For tunnels built in silty sand, the tunnel leakage can carry the fine particles into tunnels and generate seepage erosion, which will result in the tunnel settlement and damage the tunnel serviceability. This paper presents the tunnel displacement, soil stress distribution and ground settlement due to seepage erosion by using the discrete element method (DEM) simulation. The results show that the tunnel displacement and ground settlement increase linearly with the particles loss ratio. Particle arch formed around the erosion seam will redistribute the soil pressure; and it can lead to further expansion of the erosion seam and accelerate the seepage erosion process. And the seepage erosion in the inverse of the tunnel is more risky to tunnel serviceability than that in the tunnel waist and crown.",

keywords = "Numerical simulation, Particle flow, Seepage erosion, Tunnel-soil calculation model",

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doi = "10.16285/j.rsm.2017.S1.053",

language = "English",

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T1 - Particle flow simulation of seepage erosion around shield tunnel

AU - Zhang, Dong Mei

AU - Gao, Cheng Peng

AU - Yin, Zhen Yu

AU - Wang, Ru Lu

AU - Yang, Tian Liang

PY - 2017/6/10

Y1 - 2017/6/10

N2 - For tunnels built in silty sand, the tunnel leakage can carry the fine particles into tunnels and generate seepage erosion, which will result in the tunnel settlement and damage the tunnel serviceability. This paper presents the tunnel displacement, soil stress distribution and ground settlement due to seepage erosion by using the discrete element method (DEM) simulation. The results show that the tunnel displacement and ground settlement increase linearly with the particles loss ratio. Particle arch formed around the erosion seam will redistribute the soil pressure; and it can lead to further expansion of the erosion seam and accelerate the seepage erosion process. And the seepage erosion in the inverse of the tunnel is more risky to tunnel serviceability than that in the tunnel waist and crown.

AB - For tunnels built in silty sand, the tunnel leakage can carry the fine particles into tunnels and generate seepage erosion, which will result in the tunnel settlement and damage the tunnel serviceability. This paper presents the tunnel displacement, soil stress distribution and ground settlement due to seepage erosion by using the discrete element method (DEM) simulation. The results show that the tunnel displacement and ground settlement increase linearly with the particles loss ratio. Particle arch formed around the erosion seam will redistribute the soil pressure; and it can lead to further expansion of the erosion seam and accelerate the seepage erosion process. And the seepage erosion in the inverse of the tunnel is more risky to tunnel serviceability than that in the tunnel waist and crown.

KW - Numerical simulation

KW - Particle flow

KW - Seepage erosion

KW - Tunnel-soil calculation model

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JO - Yantu Lixue/Rock and Soil Mechanics

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Particle flow simulation of seepage erosion around shield tunnel

Abstract

Keywords

ASJC Scopus subject areas

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