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Title	TATE'S CAIRN TAKES CARE OF KOWLOON CONGESTION
Accession No	00488013
Journal Title	TUNNELS & TUNNELLING Vol. 21 No. 9
Corp. Authors / Publisher	Morgan-Grampian (Construction Press) Limited ; Miller Freeman
Editors	Martin, D; Wallis, S
Publication Date	19890900
Description	5 p.; Figures(4); Photos(6)
Abstract	Described is the construction and design changes which are being carried out on the twin-tube Cairn Tunnel which will provide a major new corridor from Hong Kong Island via the Eastern Harbour Crossing and Kowloon right up to the Chinese border. The original design called for two parallel tunnels with 25 pedestrian cross-passages linking them and two vertical ventilation shafts more than 200m deep sunk from the surface. A later look at the design plans showed that great savings could be obtained by replacing the vertical ventilation shafts with inclined adits. This decision enabled eight tunnel faces to be excavated simultaneously. unreinforced in-situ linings were also installed. The ventilation adits will allow fresh air to be fed into the tunnel and a prearranged system will control airflow in the tunnels in the event that a fire breaks out. Evacuation of the tunnels will be through pedestrian passageways to the adjacent tunnel and fire fighting vehicles will be able to stop in the adjacent tunnel to dispatch needed equipment.
TRT Terms	Disasters and emergency operations ; Evacuation ; Fires ; Mines ; Structural design ; Traffic congestion ; Tunnel shafts ; Tunneling ; Tunnels ; Ventilation systems
Geographical Terms	Hong Kong (China)
Other Terms	Adits; Emergency procedures; Tunnel construction; Tunnel design; Tunnel ventilation
Subject Areas	H33 CONSTRUCTION; H21 FACILITIES DESIGN; H51 SAFETY
Availability	Tunnels and Tunnelling Find a library where document is available Order Document: http://worldcat.org/issn/0041414X
TRIS Files	HRIS
Database	TRIS Online

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