25.9 C
Doha
Sunday, November 29, 2020

Qatar Rail sees delivery of first tunnel boring machine

-

Tunnel Boring Machine

The first of 21 massive tunnel boring machines (TBM) to be used to dig parts of the Doha Metro has arrived in Qatar.

The TBM, named “Lebretha,” was made in Germany and will be put to work on the Red Line North, along with three other soon-to-arrive machines named Al Khor, Al Mayeda and Al Bidda.

Doha Metro Phase 1 - Red Line North

Some 10 stations are expected to be completed for the Red Line North and eight stations for the Red Line South in the first phase of construction. It and parts of the Gold and Green lines will open to passenger traffic in 2019.

How it works

The TBMS will be used to cut circular holes in the ground beneath Doha for all the lines. Previously, Qatar Rail officials said all 21 machines would be working by 2015, adding that residents may feel “minor vibrations” during work.

In a statement, the company said:

“TBM Lebretha will travel a distance of approx. 7.954 km and will take approx. 22 months to complete – between Q3 2014 to Q2 2016). The average speed will be between 14m/day to 21 m/day, depending on ground conditions. And its daily excavation quantity will be approx. 680m³, with a predicted total excavation quantity of 5,408,720m³.

Each of the TBMs for the Doha Metro measure 7.05m in diameter and 120m in length, therefore to ensure transportation was successfully managed, TBM Lebretha was dismantled into 22 sections which were easier to transport including the cutter head.”

Lebretha is currently in the process of being reassembled after journeying to Qatar and is supposed to become operational in the third quarter of this year. It will work at the launch site of Al Wahda, next to the Qatar Exhibition Center.

In addition to the four TBMs that will be used on the Red Line North, Qatar Rail explained in a statement the distribution of the other machines for the first phase of the project:

  • Red Line South will receive 5 TBMs;
  • Green Line will receive 6 TBMs; and
  • Gold Line will receive 6 TBMs.

Thoughts?

Note: This article has been corrected to reflect the accurate spelling of the new TBM.

12 COMMENTS

Subscribe
Notify of
12 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
Chilidog
Chilidog
6 years ago

We live in West Bay. We’ll be keepIng watch too, but please let us know if any of the towers start leaning….

Omar Alansari
Omar Alansari
6 years ago

*Lebretha

osamaalassiry
osamaalassiry
6 years ago
Reply to  Omar Alansari
Shabina921
Shabina921
6 years ago
Reply to  osamaalassiry

Apologies! Have just corrected it.

DavidRSS8
DavidRSS8
6 years ago

Great! What could possibly go wrong?

sadam
sadam
6 years ago
Reply to  DavidRSS8

sinkholes and quicksands?

K Abdulghani
K Abdulghani
6 years ago
Reply to  sadam

Huge amount of oil and gas deposit perhaps?

A_qtr
A_qtr
6 years ago
Reply to  sadam

Either it’s a lame attempt at being funny or You two must’ve not taken geology classes..

wee_johnnie
wee_johnnie
6 years ago
Reply to  DavidRSS8

Wonder how far the TBM will get along the tunnel before a white Landcruiser comes racing up behind flashing its lights trying to get past?

DavidRSS8
DavidRSS8
6 years ago
Reply to  wee_johnnie

Or worse, letting that guy operate the machine.

Fearless Fawn
Fearless Fawn
6 years ago

The burning question is whether they will have their own Twitter accounts like a lot of other TBMs (https://twitter.com/LadyBirdTBM & https://twitter.com/ChompingChelsea)

Saeed Ahmad Khan
Saeed Ahmad Khan
6 years ago

what thought can we have on this article…it is a part of the rail…Let the rail complete on time then we can have positive thoughts

Related Articles

- Advertisment -

Most Read

Subscribe to Doha News below!

To be updated with all the latest news, offers and special announcements.