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Original Articles

Analysis of groundwater seepage of tunnels in fractured rock

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Pages 155-160 | Received 28 May 1999, Accepted 30 Sep 1999, Published online: 03 Mar 2011
 

Abstract

Two approaches, the equivalent porous media (EPM) approach and the discrete fracture media (DFM) approach, are used to predict the groundwater seepage into the tunnel in the fractured formation. Result of simulation indicates that the predicted flow rates of both approaches have drastic discrepancies. It shows that an additional tunnel which is excavated underneath the original tunnel is more helpful to minimize the groundwater flow flushing out of an original tunnel than one which is excavated in other directions.

Notes

Correspondence addressee

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