A prediction method of ground volume loss variation with depth induced by tunnel excavation

Lin, Q., Tian, Y., Lu, D., Gong, Q., Du, X. and Gao, Z. (2021) A prediction method of ground volume loss variation with depth induced by tunnel excavation. Acta Geotechnica, 16(11), pp. 3689-3707. (doi: 10.1007/s11440-021-01295-6)

[img] Text
248741.pdf - Accepted Version
Restricted to Repository staff only until 26 July 2022.

3MB

Abstract

A new concept called the transmission ratio of ground volume loss (TRGVL) is proposed to describe the variation law of ground volume loss with depth above the tunnel. Based on the developed Gaussian function, the formula for TRGVL is deduced. Further, the first-order derivative of TRGVL is presented to evaluate the dilation and compression degree of the soil at any depth above the tunnel. A total of 15 cases, involving eight field project cases and seven model test cases, are investigated to validate rationality of the proposed formula. The results of field projects and model test cases indicate variation in TRGVL presents four forms. By analysing the volumetric deformation of the soil above the tunnel, formation mechanism of the each form of TRGVL is revealed. Finally, the evolution of the four forms of TRGVL is used to evaluate the disturbance degree of the soil above the tunnel.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Gao, Dr Zhiwei
Authors: Lin, Q., Tian, Y., Lu, D., Gong, Q., Du, X., and Gao, Z.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Acta Geotechnica
Publisher:Springer
ISSN:1861-1125
ISSN (Online):1861-1133
Published Online:26 July 2021
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Acta Geotechnica 16(11): 3689-3707
Publisher Policy:Reproduced in accordance with the publisher copyright policy

University Staff: Request a correction | Enlighten Editors: Update this record