Construction Method Design of Meihua No.2 Tunnel in Karst Terrain for an Expressway Project

Soil Engineering and Foundation ›› 2020, Vol. 34 ›› Issue (2): 131-134.

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Construction Method Design of Meihua No.2 Tunnel in Karst Terrain for an Expressway Project

JIAN Yilin, CHEN Chi, PENG Wenbo

(CCCC Second Highway Consultants Co. Ltd., Wuhan 430056)

Received:2019-12-06 Revised:2019-12-16 Online:2020-05-20 Published:2020-05-20

Abstract

Abstract: The Meihua No.2 tunnel is located in the karst terrain. The fill soils in these welldeveloped rock cavities and pinnacles are soft to medium clay. This paper presents the construction techniques used in the liner selection, rock mass stabilization, advanced excavation support and the predicative geological conditions drilling during the tunnel excavation. Different construction techniques were used based on the karst geological conditions encountered during the construction. The tunnel was successfully constructed and is under the operation.

Key words: tunnel in karst terrain, soft cohesive soils, mitigation design

CLC Number:

U456

JIAN Yilin, CHEN Chi, PENG Wenbo. Construction Method Design of Meihua No.2 Tunnel in Karst Terrain for an Expressway Project[J]. Soil Engineering and Foundation, 2020, 34(2): 131-134.

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Construction Method Design of Meihua No.2 Tunnel in Karst Terrain for an Expressway Project

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