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| EXISTING STATE OF RAPID TUNNELLING AT EXIT SECTION OF PARALLEL DRIFT ON No- I LINE OF QINLING TUNNEL |
| Li Duo |
| Railway Tunnel Engineering Bureau of MOR |
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Abstract Based on the descriptions of the existing tunnelling state at the exit section of parallel drift on the No. I Line of Qinling Tunnel, the advanced equipments and the corresponding con- struction method which have been used for constructing the present railway tunnel in China with drill blasting and non-rail transportation are expounded in this paper. The experiences are valu- able for reference.
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Received: 30 April 1996
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1996, Vol. 13 
