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 > Tunnelling complete on Bangkok Rama 111 Project

Tunnelling complete on Bangkok Rama 111 Project

Tris Thomas

Written by Tris Thomas on 02/05/2022 in News

Tagged: Bangkok,Rama III Tunnel Project,Terratec

Contractor Italian-Thai Development PCL (ITD) has completed tunnelling on the Rama III Tunnel Project for the Bangkok’s Metropolitan Electricity Authority, in Thailand. The tunnel was completed using a TERRATEC 4.27m diameter Earth EPBM which successfully holed through in early April 2022 in downtown Bangkok.

The Rama III is a new high-voltage cable tunnel which is one of a series of tunnelling projects being undertaken by Bangkok’s Metropolitan Electricity Authority (MEA), which are being built to meet increased power demands in the Thai capital.

S69 220409 WP 40

This project is subject to several constraining factors including tight alignment constraints and navigating the foundations of the overhead bridges along the alignment. This was achieved thanks to the X-type articulation system incorporated into the design, which can accommodate the very tight radius curves required by the project of approximately 85m. The TERRATEC 4.27m diameter’s soft ground cutterhead features an open spoke design to ensure good material flow and the addition of knife bits to assist break-in and break-out of the concrete shaft eyes.

Two types of segment were installed, universal tapered precast concrete segments, 1200mm long (installed as the machine normally progresses), and shorter steel segments, 600mm long (utilised during the course of the sharp radius curves).

Tunnelling operations were closely observed throughout the project via a settlement monitoring programme that demonstrated minimal impact on the existing above-ground structures.

Geological conditions along the 3.5km Rama III tunnel alignment consist of stiff to very stiff clay with lenses of sand and a groundwater head of about 2 bars.

The project is located close to the Chao Phraya River with heavy traffic and the physical limitations of this built-up area – which includes numerous high-rise buildings and the foundation of the overhead bridge. Logistics during the launch and operation of the TBM were extremely challenging especially during the transportation and delivery of oversize TBM parts for assembly on site.

Comments:

Leave a Reply Cancel reply

Your email address will not be published.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

Search

Digital Edition

More Like This

29/04/2022

Live performance marks Tideway’s tunnel completion

Live performance marks Tideway’s tunnel completion

Tunnelling has completed on London’s 25km long, 7.2m diameter Thames Tideway Tunnel and to commemorate this engineering feat, a live…

01/03/2022

Sydney Metro awards Western Tunnelling contract

Sydney Metro awards Western Tunnelling contract

Sydney Metro has awarded a $2.16bn contract to deliver the next stage of tunnelling on the mega Sydney Metro West…

03/12/2021

RFQ for second tunnelling contract on Eglinton Crosstown West Extension

RFQ for second tunnelling contract on Eglinton Crosstown West Extension

The Ontario government is entering into the next stage of planning, design and procurement for the future Eglinton Crosstown West…

  • 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