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)

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