ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2005, Vol. 25 ›› Issue (6): 47-49,56.
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CHEN Jian
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Abstract:
No.2 karst cave of Yuanliangshan Tunnel on YuHuai railway is located in the Maoba syncline section where there exists rich highpressured water. The longitudinal width of the level profile of No. 2 karst cave is 50m. The water pressure measured under the condition of partial water discharge is 3.013 MPa. Furthermore, the karst cave contains a large amount of fine silt sand. The emphasis of the article is placed on the introduction of the excavation technology adopted in the fullface breakthrough of No.2 karst cave section of the tunnel.
Key words: high water level  , waterrich section karst cave  , tunnel  , excavation technology
CHEN Jian. Construction Technology of No.2 Karst Cave Section of Yuanliangshan Tunnel[J]. Tunnel Construction, 2005, 25(6): 47-49,56.
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