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Thursday, October 21, 2021

Qatar Rail installs overhead conveyer to move dug-up dirt out of West Bay

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Qatar Rail trash chutes
Qatar Rail trash conveyer belt

Many Qatar commuters may have noticed a new elevated track system in West Bay that has been going up on Majlis Al Taawon St. over the past two months.

The track is being built by Qatar Rail as part of its metro project for the area, a senior official there told Doha News.

Dubbed an “excavated materials conveyor belt,” it will transport all the dirt, sand and rocks dug out of the ground in order to create the West Bay Central and West Bay South stations.

GCC rail network map
GCC rail network map

And, in one of Qatar’s first major construction recycling projects, all the waste produced is expected to be reused during the construction of the long-distance GCC railway, Qatar Rail’s Logistics Director Ahmed Al Kowsi added.

The track system will be utilized over the next eight months as excavation continues to make way for two metro stations on the Red Line North, in the heart of Doha’s business district.

They are two of the 37 stations that are expected to open as part of phase 1 of the Doha Metro in 2019.

During that time, more than 400,000 cubic meters of material will be excavated. While a quarter of it would be reused as back-fill in the construction of the stations, the remainder needs to be taken from the sites, Al Kowsi said.

Traditionally, this would have been done by loading trucks with the waste, and transporting the garbage to a site away from the construction area.

However, that would equate to 62,000 truck trips up and down one of Doha’s busiest thoroughfares, contributing to traffic woes in the area and further polluting the atmosphere.

Oryx Island
Oryx Island

Planners at Qatar Rail initially had the idea of creating a man-made island using the dug-out material.

Barwa Real Estate was going to develop the QR20 million Oryx island as a 445-acre luxury resort with high-end villas, a water park and a marina for docking cruise ships.

But due to environmental issues, the project was eventually ruled out, and Barwa told Doha News in June last year that it had shelved its plans.

How it works

The conveyor belt system has successfully been used in other busy cities in the world, including London for the construction of  its Crossrail project, as well as in Singapore and Hong Kong.

Qatar Rail brought it to Doha so that a part of the city could operate as normal during major development work in its center. Al Kowsi explained:

“When we looked at trucking out all that material in the conventional method, it would have put a big burden on the roads, on people and on the environment. When we proposed the Metro years ago, the main instruction was that we had to keep the city moving.

The conveyor belt method is a fantastic, viable alternative which has been used by other cities and has worked well.”

The system, which will run 2.44 km along Majlis Al Taawon Street as far as Palm Towers, has 5km of conveyor belt and sits 6.3m above the ground, with sections that sit over the roads boxed in to avoid any material dropping onto vehicles below.

Qatar Rail excavated materials conveyor belt
Qatar Rail excavated materials conveyor belt

Some 1,500 tons of steel and 1,300 cubic meters of concrete were used to build the system, which is currently in the testing phase but is expected to start operating fully by the end of this week.

Once dug out of the ground, the waste material will be loaded onto the conveyor belt and transported above ground to a depot opposite Al Bidda Park.

Everything that has been dug out from the two station sites will be recycled and go toward building embankments for the long-distance railway that will link Qatar to its GCC neighbors, which has a planned completion date of 2018.

“Nothing will be wasted, nothing will be dumped. We will treat then re-use 100 percent of this material, which is perfect quality for what we need for the long distance rail construction. I am proud that we are recycling all of it,” Al Kowsi added.

Once excavation is complete by the end of this year, the system will be dismantled and reused on another Qatar Rail-related project, he continued.

Qatar has been under pressure to recycle more of its construction debris, which makes up a significant percentage of the 7,000 tons of waste the country generates each day.

Late last year, the first recycled road in Qatar was built, using reclaimed and repurposed stones from a construction site and landfill.

The trial was part of research initiative between the public works authority Ashghal, the Ministry of Environment and others to encourage the public and private sector to reuse more of its construction materials where possible.

Thoughts?

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Heisenberg
Heisenberg
6 years ago

I thought it was a monorail. but this is a great idea.

Saffa
Saffa
6 years ago
Reply to  Heisenberg

Heisenberg, was there a principle of uncertainty there? 😉

Ibrahim Ali
Ibrahim Ali
6 years ago
Reply to  Saffa

That is Breaking Bad Heisenberg not the scientist, although the character choose the name based on the scientist.

Lorin
Lorin
6 years ago
Reply to  Heisenberg

I also thought of that….likewise, two thumbs-up for Qatar Rail for coming up with such great idea.

greylag
greylag
6 years ago

Why does the article call the spoil ‘garbage’? It conveys dirt, mostly sand, from the excavation. Please don’t mis lead the public.

Acrobat
Acrobat
6 years ago
Reply to  greylag

What is the difference?

Saffa
Saffa
6 years ago
Reply to  Acrobat

The definition of garbage:

garbage
ˈɡɑːbɪdʒ/
noun
NORTH AMERICAN
noun: garbage
rubbish or waste, especially domestic refuse.

“garbage littered the estate”

synonyms:rubbish, refuse, domestic refuse, waste, waste material, debris, detritus,litter, junk, scrap, discarded matter; More

worthless or meaningless material or ideas; rubbish.

“a store full of overpriced garbage”

COMPUTING
unwanted data in a computer’s memory.

My dictionary of Civil Engineering terms notes “Spoil” to be dirt (soil) or rock excavated from its original location but not used in an embankment or fill. As this is supposed to be used in another project, it will be “spoil” until it becomes “fill” or “embankment(s)”…

Excess material that is disposed of is generally still termed spoil, as it has a use, in landfill sites where garbage is disposed, to cover the daily work area to prevent lightweight garbage from blowing out of the site in the wind, or as bulk material for landscaping etc. (if suitable)

In short, Lesley, please correct the title from “garbage belt” to “spoil conveyor”, I know it’s pedantic, but the material is not garbage.

Rory
Rory
6 years ago
Reply to  Saffa

Still one more incorrect use of ‘garbage’ in the text. Come on DN!

Anonymouse
Anonymouse
6 years ago
Reply to  greylag

Written by non-experts. For the same reason that R/C aircraft are mistakenly called ‘drones’ by the media.

Elkhorn
Elkhorn
6 years ago

Kudos. Nice one. I applaud Qatar Rail’s decision not to burden motorists. I do wish that Ashgal can have a similar philosophy – with the many road construction happening, at the same time, around Najma and some parts of Mansoura, even residents are now being bothered by the traffic congestion (as drivers keep honking their horns).

MarkDoha
MarkDoha
6 years ago

Great idea. 62,000 truck loads kept off the roads will be a big achievement.

Saffa
Saffa
6 years ago
Reply to  MarkDoha

On wonders how they’re going to get the material out of the depot near Al Bidda Park? . Trucks will be needed at some point, just not all on MAT street at the start of the WB Towers and the tennis stadium. All the roads near Al Bidda Park are equally busy and lead to more of the same busy streets, as they head inland away from the Corniche

Mr. Conductor
Mr. Conductor
6 years ago
Reply to  Saffa

Conveyor crosses the road to the depot (like a pedestrian bridge)

Saffa
Saffa
6 years ago
Reply to  Mr. Conductor

Yes I know that, but the Qatar portion of the Gulf Rail runs further inland than Al Bidda Park, so how will they transport the spoil from the depot to the work site where it will be placed? Magic Carpets?

boscko10
boscko10
6 years ago
Reply to  Saffa

They will still require trucks to get the spoil out of town, but by taking it to Al Bidda they can operate a “transfer station” to remove the spoil at night and on the weekend thus minimising disruption to the public

MarkDoha
MarkDoha
6 years ago
Reply to  Saffa

I saw an early plan for this project which transported the spoil all the way to the site of the new industrial area that Manateq are building down past Barwa Village to be used for construction. Maybe they’re building the conveyor in stages.

Saffa
Saffa
6 years ago
Reply to  MarkDoha

That’s quite a distance, kudos if they do as that will certainly relieve the truck traffic

JustSayin
JustSayin
6 years ago

I don’t think you could build a 445-acre luxury resort with high-end villas, a water park and a marina for docking cruise ships for the cost of QAR 20 million.

Saffa
Saffa
6 years ago
Reply to  JustSayin

The linked story notes the project value as USD 5.5billion (QR20billion)…

Mr. Conductor
Mr. Conductor
6 years ago

It is not a “garbage belt”, it is a conveyor belt.
And it is not for “dug-up waste”, it is for excavated material/soil or “dug-up” soil.

Coco
Coco
6 years ago

What/Where is that “recycled road”? Anyone?

boscko10
boscko10
6 years ago
Reply to  Coco

The recycled road mentioned is the access road to the municipal waste site at Rawdat Rashid….It is however incorrect to say that it was Qatar’s first recycled road….In 2012 Mesaimeer Rd at Abu Hamour was recycled and so was Al Kaserat St In the Industrial Area.

sayed syed
sayed syed
6 years ago

Its great, I saw this conveyor belt 2 days ago and thought the same. Good going Qatar.

boscko10
boscko10
6 years ago

The conveyor belt is a great initiative….and great to see the spoil being recycled too…..this is the kind of “outside of the box” thinking we need to get everything built.

A_qtr
A_qtr
6 years ago

No freakin way… 27 posts and not a single Qatar bashing post… Where my boys desertcard and observant one ??
This has to be some sort of record .. I say shabina writes a story about it

Amr
Amr
6 years ago

Great Idea

Marco Polo
Marco Polo
6 years ago

Just a question of time before it collapses on the traffic below…..

Guest
Guest
6 years ago

Thank god for that, I was thinking that this was the train track itself ( ͡° ͜ʖ ͡°)

Anonymouse
Anonymouse
6 years ago

Look like a good plan if it is carried out as described. Excellent.

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