NDLI: Deformation and failure of a tunnel in the restraining bend of a strike–slip fault zone: an example from Hengshan Mountain, Shanxi Province, China

Content Provider	Springer Nature Link
Author	Lin, Daming Yuan, Renmao Shang, Yanjun Bao, Weixing Wang, Kaiyang Zhang, Zhongjian Li, Kun He, Wantong
Copyright Year	2016
Abstract	The Yanmenguan Tunnel runs through Hengshan Mountain in Shanxi Province, China. The mountain is mainly composed of metamorphic rock cut by a well-developed strike–slip fault system. As a result of the local geological setting, significant deformation and mud bursting occurred during excavation of the tunnel. In this paper, a representative 170-m-long section of the tunnel (from Sta. 118 K + 30.0 to Sta. 118 K + 200.0), which is located in the restraining bend area of the strike-slip fault system, is chosen as a case study to investigate the influence of such a fault on tunnel stability. The characteristics of strike-slip faults and asymmetrical pressure are then investigated, in conjunction with monitoring stress and displacement in the tunnel. The results of the analysis suggest that the strike-slip fault complicates the geological condition and decreases the quality of the rock masses. Different rock mass classifications for the surrounding rocks are the dominant factor causing asymmetrical pressure in the tunnel, which in turn significantly influences deformation in the tunnel. Shear and crushing failure are the mechanisms of failure in the surrounding rocks in the surveyed section, where significant deformation and mud bursting occurred. It indicates that stress and the classifications of surrounding rock masses should be carefully investigated and analyzed during the design and construction of underground engineering works in such a setting.
Starting Page	263
Ending Page	274
Page Count	12
File Format	PDF
ISSN	14359529
Journal	Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur
Volume Number	76
Issue Number	1
e-ISSN	14359537
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-02-02
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Yanmenguan Tunnel Strike-slip faults Asymmetrical pressure Large deformation Mud bursting Geotechnical Engineering & Applied Earth Sciences Geoengineering, Foundations, Hydraulics Geoecology/Natural Processes Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology

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