Journal of the Society of Materials Science, Japan
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
Original Papers
Estimation of Mechanical Characteristics of the Ground Ahead of a Tunnel Face
Masayasu HISATAKEYouhei HIEDA
Author information
JOURNALS FREE ACCESS

2007 Volume 56 Issue 5 Pages 460-465

Details
Abstract

In order to identify the mechanical parameters of the ground ahead of a tunnel face, a three-dimensional back-analysis method is newly proposed. The method consists of a three-dimensional finite element analysis and the secant method, and is based on an iteration procedure. The Poisson's ratio, the modulus of elasticity and the six components of the initial stress levels of the ground around a tunnel face are back analyzed from displacements obtained by field measurement, which are produced by one-step excavation of the tunnel face. Influence of measurement errors of field displacements on accuracy of the results identified is made clear through numerical calculation.

Information related to the author
© 2007 by The Society of Materials Science, Japan
Previous article Next article
feedback
Top