Study on Rockburst Tendency of Complex Surrounding Rock Combination in a Deepburied Tunnel

doi:10.3973/j.issn.1672-741X.2012.04.010

Tunnel Construction ›› 2012, Vol. 32 ›› Issue (4): 486-489.DOI: 10.3973/j.issn.1672-741X.2012.04.010

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Study on Rockburst Tendency of Complex Surrounding Rock Combination in a Deepburied Tunnel

TIAN Ning

(Ji’nan Design Institute, China Railway Engineering Design and Consultant Group Co., Ltd., Ji’nan 250022, China)

Received:2012-02-13 Revised:2012-07-16 Online:2012-08-20 Published:2012-10-16

Abstract

Abstract: Rockburst is a violent failure in deepburied tunnels. A deepburied tunnel in Chongqing is located in ground consisting of sandstone layers, siltstone layers and mudstone layers, which is subject to rockburst during construction. The mechanical characteristics and dynamic fracture characteristics of the complex surrounding rock combination are studied. The influence of water immersion on the rockburst tendency is studied. The indoor evaluation results on the rockburst tendency are obtained. The paper can provide reference for minimizing the rockburst risks.

Key words: deepburied tunnel, rockburst tendency, complex surrounding rock, combination, water immersion test

TIAN Ning. Study on Rockburst Tendency of Complex Surrounding Rock Combination in a Deepburied Tunnel[J]. Tunnel Construction, 2012, 32(4): 486-489.

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Study on Rockburst Tendency of Complex Surrounding Rock Combination in a Deepburied Tunnel

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