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Tunnel

A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rath

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What is an Earth Pressure Tunnel Boring Machine (EPBTBM

An earth pressure tunnel boring machine (EPBTBM) is a type of underground excavator that uses mechanical pressure at the face of the tunnel to counterbalance earth pressures. It is a form of tunnel boring machine that negates the need for compressed air t

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Names of our first six tunnel boring machines announced

The Mayor of London and the Secretary of State for Transport today revealed the giant 1,000 tonne tunnel boring machines that will carve Crossrail’s tunnels under the capital.

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Breakthrough for Northern Line Extension tunnelling machines

Breakthrough for Northern Line Extension tunnelling ... Huge tunnel boring machine, ... That such a vast extension to the London Underground network is being ...

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London's Crossrail tunnels and boring machines revealed in

Journey back into the depths of London's Crossrail tunnels with ... incredible underground ... The team building Crossrail used tunnel boring machines ...

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1000 tonne crane lowers Kawasaki tunnel boring machine

Download this stock image: 1000 tonne crane lowers Kawasaki tunnel boring machine underground on Jubilee Line Extension, part of the London Tube network. - B8J1G8 from Alamy's library of millions of high resolution stock photos, illustrations and vectors.

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Crossrail: The monster tunnelling under London streets - BBC

The huge machines carving out tunnels in London’s new ... are carving out the underground section of London’s new ... two gargantuan tunnel boring machines ...

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Scenes From Underground - The Atlantic

Scenes From Underground. Alan ... The London Transport Museum was giving ... near the pit where a tunnel boring machine known as "Bertha" will emerge when the ...

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How tunnel is made - material, history, used, machine

A tunnel is an underground or underwater passage that is primarily horizontal. Relatively small-diameter ones carry utility lines or function as pipelines.

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Tunnel construction

Bored tunnel, constructed in situ, without removing the ground above. They are usually of circular or horseshoe cross-section. Some concepts of underground mining apply. Modern techniques include Shotcrete used in the New Austrian tunnelling method, use o

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Mysterious 'unknown object' blocks progress of huge drilling

What is the mysterious 'unknown object' blocking progress of huge drilling machine boring out new highway below Seattle? The highway tunnel is being dug 45 feet below ground

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A new hard rock TBM performance prediction model for

Among the models used for performance prediction of hard rock tunnel boring machines two stand out and are often used in the industry. They include the semi theoretical model by Colorado School of Mines and the empirical model by Norwegian University of S

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The History Press | The forgotten men of the London

The forgotten men of the London Underground At this very moment in time there are huge mechanical earthworms journeying through subterranean London. Working day and night, these loud and heavy beasts, known as Tunnel Boring Machines, are creating new tunn

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Names of our first six tunnel boring machines

The Mayor of London and the Secretary of State for Transport today revealed the giant 1,000 tonne tunnel boring machines that will carve Crossrail’s tunnels under the capital. The machines are around 150 metres long, the equivalent to 14 London buses end

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Tideway | Reconnecting London with the River Thames

The Thames Tideway Tunnel is a major new sewer that will help tackle the problem of overflows from the capital's Victorian sewers and will protect the River Thames from increasing pollution for at least the next 100 years.

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Tunnelling complete on Northern line extension | Global Rail News

Tunnel boring machine Amy broke through at Kennington to complete the tunnelling programme on London Underground’s Northern line extension.

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Meet Crossrail's giant tunnelling machines

Dec 05, 2012 · Crossrail will use eight tunnel boring machines (TBMs) to construct the new tunnels under London. These huge machines will work 24 hours a day beneath the st...

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Breakthrough as Northern Line tunnel machines reach final

Breakthrough as Northern Line tunnel machines reach final destination. London Underground's Northern Line Extension reaches a major ... Huge tunnel boring machine, ...

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Tunnel boring machines | Institution of Civil Engineers

The first tunnelling machine was designed by engineer Marc Brunel (son of Isambard) in the 19th century. ... Tunnel boring machines. ... modern TBMs have helped boost the economy. London Underground’s Jubilee line tunnel has brought redevelopment all alon

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Thames Tunnel Archive - Brunel Museum

The Thames Tunnel from Arcade to Archive & Drawing Pad to Launch Pad Brunel’s Journey under the River Thames Buried in a family album for almost two hundred years, these drawings have changed the shape of our cities and the lives of city dwellers.

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