A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Japan's pressurised excavator claimed world first
Features of excavator with diameter of 7 m equipped with special device to keep internal air pressure equivalent to normal atmospheric pressure; principal part of new unit is "partial pressure system" which applies compressed air to forward cutting blade only, enabling that section of excavator to withstand full pressure from outside; as result of unusual body design of new unit, excavator holds up surrounding earth during excavating operations, and moves forward by pushing against front end; excavator is designed to meet single track subway tunnel in Japan and is suitable for operation under various geographical or geophysical conditions; unit is tentatively priced at $700,000.
Japan's pressurised excavator claimed world first
Features of excavator with diameter of 7 m equipped with special device to keep internal air pressure equivalent to normal atmospheric pressure; principal part of new unit is "partial pressure system" which applies compressed air to forward cutting blade only, enabling that section of excavator to withstand full pressure from outside; as result of unusual body design of new unit, excavator holds up surrounding earth during excavating operations, and moves forward by pushing against front end; excavator is designed to meet single track subway tunnel in Japan and is suitable for operation under various geographical or geophysical conditions; unit is tentatively priced at $700,000.
Japan's pressurised excavator claimed world first
Australasian Engr
1967
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
First claimed for globally optimized seismic inversion
Online Contents | 1994
Florida Reuse Project Claimed to Be First
| Wiley | 1989
Modular buildings: Turnkey offering a claimed sector `first'
British Library Online Contents | 2011
Company & Product News: 'First' claimed for 3D inversion program
Online Contents | 1995