Analysis of the Relationship between Grade and Deformation of Rock Surrounding in Dabie Mountains Tunnel Mawu Highway

›› 2012, Vol. 26 ›› Issue (4): 88-90.

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Analysis of the Relationship between Grade and Deformation of Rock Surrounding in Dabie Mountains Tunnel Mawu Highway

ZHANG Guitao1，CAO Chunsheng2, CHENG Kang3, Fu Hai3

1.Zhongtian Road and Bridge Co., Ltd.，Wuhan 430030；2.Consulting and Supervision Center
of Hubei Province Highway Engineering, Wuhan 430050；3. Wuhan University of Technology, Wuhan 430070

Received:2011-10-21 Online:2012-08-20 Published:2012-09-07

Abstract

Abstract: In this paper, a classification method of rock mass for tunnel engineering in Dabiesan is summarized. Based on the monitored data, three different relationships between the Rock Mass Class and the tunnel deformation are obtained. First, hard and massive rock mass with a Class of II ~ III has a smooth deformation curve. The Class III-V rock mass has a deformation curve similar to the square root symbol. The weak and fractured rock mass has complete elasticplastic perfect deformation characteristics. In tunnel excavation in these rock masses, if the deformation rate has a sudden change, more frequent monitoring is necessary to ensure construction safety.

Key words: Highway Tunnels, Rock Mass Classifications, Tunnel Deformation, Correlations

ZHANG Guitao1，CAO Chunsheng2, CHENG Kang3, Fu Hai3. Analysis of the Relationship between Grade and Deformation of Rock Surrounding in Dabie Mountains Tunnel Mawu Highway[J]. , 2012, 26(4): 88-90.

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Analysis of the Relationship between Grade and Deformation of Rock Surrounding in Dabie Mountains Tunnel Mawu Highway

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