tunnelling-journal (1)
tunnelling-journal (1)
  • Home
  • Print
    • Subscribe
    • Tunnelling Journal
    • Breakthrough
    • ITA Activity Report
    • A&NZ Journal
    • WTC Preview
    • Media Kit
  • Digital
    • Newsletter
    • E-Shots
    • TJ Digital edition
    • Products Page
    • Media Kit
  • Conferences
    • BTS Conference and Exhibition
    • Cutting Edge 2022
  • Buyer’s Guide
  • Events Diary
  • Jobs
  • About Us
  • Contact Us
  • Podcast

Home > Metrostav celebrates Czech breakthrough

Metrostav celebrates Czech breakthrough

Tris Thomas

Written by Tris Thomas on 15/06/2016 in News

Tagged:

Contractor Metrostav has announced the breakthrough of its 9.8m diameter Herrenknecht hybrid TBM on the first tube of 4km long Ejpovice twin railway tunnels near Pilsen in the Czech Republic.

The Ejpovice tunnels are the first on the Czech rail network to be constructed using mechanized excavation methods. Two different rock types – weak shales and hard spilite – predetermined the use of a multi-mode TBM which could combine EPB operation suited for the weak rock conditions and the ability to work as a hard rock machine.

The tunnel’s 8.7m i.d., 40cm thick lining is composed of steel-fibre-reinforced concrete segments backfilled using a 2-component contact grouting mixture.

TBM assembly began on 20. 11. 2014 in front of the southern tunnel portal. A TEREX DEMAG CC 2800 crawler crane and a TEREX DEMAG AC 160 truck-mounted crane were used for handling duties. Assembly was carried out 24/7 for two months with the machine completed and ready for launch on 31. 1. 2015.

By January 2016 TBM ‘Viktorie’ reached the 3km mark heralding completion through the weak shales, averaging monthly advance rates of 264m with maximum in May 2015 – 528m, i.e. 32m per day.

The final drive through the hard spilite rock has been successfully completed over the past five months.

Comments:

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Search

Digital Edition

More Like This

31/10/2022

EPBMS delivered for Ninth Bangkok Water Supply Tunnel

EPBMS delivered for Ninth Bangkok Water Supply Tunnel

TERRATEC has celebrated the successful Factory Acceptance Tests of two new 4.39m diameter EPBMs and one 4.8m diameter EPBM destined…

20/09/2022

Singapore LTA announces CRL2 alignment and stations

Singapore LTA announces CRL2 alignment and stations

Singapore’s Land Transport Authority (LTA) has announced the alignment and station locations of the Cross Island Line Phase 2 (CRL2)…

11/08/2022

Ministerial endorsement for Suburban Rail Loop (SRL) East

Ministerial endorsement for Suburban Rail Loop (SRL) East

The first stage of Victoria’s biggest ever infrastructure project – Suburban Rail Loop (SRL) East – is a significant step…

  • Contact Us
  • Media Kit
  • Magazine Archive

Newsletter

The latest from the Tunneling Journal direct to your inbox.

Social



Enquiries

TGS Media Ltd
The Old Library
Webster House
Dudley Road
Tunbridge Wells
TN1 1LE
United Kingdom

© Tunnelling Journal. All Rights Reserved. Privacy Policy / Terms & Conditions. Admin

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.OkRead more