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| DECIDE STRUCTURAL FORM OF SOLID BED IN WUSHAOLING
EXTREME LONG TUNNEL ON LANZHOU-WUWEI RAILWAY |
| YUAN Yong-xuan |
| Track and Transport Department of the First Railway Survey and Design Institute |
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Abstract Wushaoling Extreme Long Tunnel begun to construct in February, 2003. Now all construction projects
are conducted orderly and the tunnel will be open to traffic in Oct. 2005.Rational selection of bed structure and
track form is essential to fitting special geological environment, guarantee the stability of bed in the tunnel and
train safe running and reducing maintenance.
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Received: 20 September 2004
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2005, Vol. 22 
