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Bentonite TBM pioneer wins Sir Frank Whittle Medal - The ...

The result was the Bentonite Tunnelling Machine, which he patented in 1964. The machine uses pressurised bentonite slurry in a sealed bulkhead behind the cutting face to balance the water pressure in the ground and stabilise the tunnel while supporting rings are installed.

Award for British inventor of slurry TBM concept

The result was the Bentonite Tunnelling Machine. The machine uses pressurised bentonite slurry in a sealed bulkhead behind the cutting face to balance the water pressure in the ground and stabilise the tunnel while supporting rings are installed.

Articles - Tunnelling over time

The outcome was Bartlett’s bentonite tunnelling machine, which he patented in 1964. The essence of the invention is the use of a thixotropic slurry such as bentonite that is under pressure in a sealed bulkhead at the front of the tunnelling machine, so that the tunnellers behind can work in …

THE BENTONITE TUNNELLING MACHINE. | Proceedings of the ...

Proceedings of the Institution of Civil Engineers. E-ISSN 1753-7789. Volume 54 Issue 4, NOVEMBER 1973, ... Prev Next > THE BENTONITE TUNNELLING MACHINE. Authors: JV BARTLETT. x. JV BARTLETT. Search for articles by this author ... Proceedings of the Institution of Civil Engineers, Volume 54, Issue 4, 1 Nov 1973 (625–639)

Tunnel boring machine - Wikipedia

BENTONITE TUNNELLING MACHINE. The paper describes a new method of driving tunnels through granular soils above or below the water table using a mechanical tunneling machine within which the face is supported by a thixotropic slurry.

BENTONITE TUNNELLING MACHINE - TRID

Bentonite clay is frequently used in construction because- in slurry form it is thixotropic – a thick gel when at rest but a liquid when agitated. Bartlett began developing a new type of tunnelling machine that combined slurry trenches with mechanical digging technology. The result was the Bentonite Tunnelling Machine, which he patented in 1964.

John Vernon Bartlett - Wikipedia

ICE Virtual Library essential engineering knowledge. Cart. Mobile

Tunnelling pioneer John Bartlett receives the Sir Frank ...

The result was the Bentonite Tunnelling Machine, which he patented in 1964. The machine uses pressurised bentonite slurry in a sealed bulkhead behind the cutting face to balance the water pressure in the ground and stabilise the tunnel while supporting rings are installed.