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Innovative hybrid EPB tunnelling in Rio de Janeiro

Author(s):

Medium: journal article
Language(s): English, German
Published in: Geomechanics and Tunnelling, , n. 1, v. 7
Page(s): 55-63
DOI: 10.1002/geot.201400006
Abstract:

The Line 4 South being constructed in Rio de Janeiro crosses complex geology that includes a long stretch of sand bounded by two stretches of hard, highly abrasive rock. These geological conditions, combined with the fact that the project is located in a distinct urban area, creates a demanding project scenario where special care needs to be taken. After carrying out an evaluation to determine whether to use earth pressure balance or slurry technology, the design of a convertible EPB boring machine that can excavate both rock and soils was developed. This paper outlines the technical difficulties of the project and describes the decision-making process and the solutions adopted. A technical description of the different operation modes of this hybrid TBM and the conditioning process related to each of them is provided.

Keywords:
EPB shields convertible shield process controlling multi-mode TBM soil conditioning
Available from: Refer to publisher
Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1002/geot.201400006.
  • About this
    data sheet
  • Reference-ID
    10069790
  • Published on:
    22/02/2014
  • Last updated on:
    13/08/2014
 
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