Coupled Numerical Analysis of Tunnel Excavation in Saturated Soft Clay under High Groundwater

Abstract:

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A coupled numerical simulation of a river-crossing shield tunnel excavation in saturated soft clay with high groundwater has been performed using a three-dimensional finite difference model, which takes into account variation of soil permeability with stress, anisotropy of permeability, reduction effect of joints on segment bending stiffness and the hardening process of synchronized grouting material. Groundwater seepage conditions around the tunnel, bending moment, axial forces and strength safety factor of tunnel segment as well as deep soil displacement during tunnel diving are investigated numerically. The analyses provide valuable information concerning the mechanical behavior of tunnel segment and hydrological field in soil around tunnel during advancing. The result also is benefited to control groundwater for river-crossing tunnel in soft clay under high water table.

Info:

Periodical:

Advanced Materials Research (Volumes 368-373)

Edited by:

Qing Yang, Li Hua Zhu, Jing Jing He, Zeng Feng Yan and Rui Ren

Pages:

2533-2536

DOI:

10.4028/www.scientific.net/AMR.368-373.2533

Citation:

H. Yuan et al., "Coupled Numerical Analysis of Tunnel Excavation in Saturated Soft Clay under High Groundwater", Advanced Materials Research, Vols. 368-373, pp. 2533-2536, 2012

Online since:

October 2011

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Price:

$35.00

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