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Experimental and Numerical Study of Interactions Between Parallel Tunnels  

Kim, Sang-Hwan (Faculty in Civil Engrg. Dept., Hoseo Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.19, no.6, 2003 , pp. 181-187 More about this Journal
Abstract
This paper describes a study of the influence of shield tunnel construction on the displacements and stresses induced in the linings of existing nearby parallel tunnels. The paper presents a brief review of a set of laboratory scale model research programme investigating the influence of tunnel proximity and alignment, liner stiffness on the nature of the interactions between closely spaced tunnels in clay. A total of two sets of carefully controlled physical model tests were performed. A cylindrical test tank was developed and used to produce clay samples of Speswhite kaolin. In each of the tests, three model tunnels were installed in order to conduct two interaction exts that have been carried out to investigate the interaction problem between parallel tunnels. The results of these tests are compared with the results of finite element analysis to investigate the techniques that must be used to obtain reliable numerical solutions to this type of problem.
Keywords
Closely spaced tunnels; Liner stiffness; Model tunnelling machine; Parallel tunnels; Shield tunnel;
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