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Field Monitoring of Surrounding Rock Stress in Tunnel Construction

Dong, Ying Na / Huang, Qiang

The surrounding rock stress field monitor has been done in excavation by vibrating wire transducer. The field monitoring data are compared with numerical simulation results. The result shows: Vibrating wire transducer can record the stress variation of surrounding rock and support. Surrounding rock stress changes violently at every excavation step, such as lower bench excavation, the stress variation is mainly controlled by the spatial effect. When the distance from excavation face to the monitoring section is more than a tunnel diameter, the rock stress variation is mainly affected by time and it is relatively smooth and continuous.

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Field Monitoring of Surrounding Rock Stress in Tunnel Construction

Dong, Ying Na / Huang, Qiang

The surrounding rock stress field monitor has been done in excavation by vibrating wire transducer. The field monitoring data are compared with numerical simulation results. The result shows: Vibrating wire transducer can record the stress variation of surrounding rock and support. Surrounding rock stress changes violently at every excavation step, such as lower bench excavation, the stress variation is mainly controlled by the spatial effect. When the distance from excavation face to the monitoring section is more than a tunnel diameter, the rock stress variation is mainly affected by time and it is relatively smooth and continuous.

Field Monitoring of Surrounding Rock Stress in Tunnel Construction

Dong, Ying Na / Huang, Qiang

The surrounding rock stress field monitor has been done in excavation by vibrating wire transducer. The field monitoring data are compared with numerical simulation results. The result shows: Vibrating wire transducer can record the stress variation of surrounding rock and support. Surrounding rock stress changes violently at every excavation step, such as lower bench excavation, the stress variation is mainly controlled by the spatial effect. When the distance from excavation face to the monitoring section is more than a tunnel diameter, the rock stress variation is mainly affected by time and it is relatively smooth and continuous.

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Title:

Field Monitoring of Surrounding Rock Stress in Tunnel Construction

Contributors:

Dong, Ying Na / Huang, Qiang

Published in:

Applied Mechanics and Materials ; 170-173 ; 1735-1739

Publication date:

2012-05-14

Size:

5 pages

ISSN:

1662-7482 , 1660-9336

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.170-173.1735

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Tunnel Construction , Surrounding Rock Stress , Bench Method , Field Monitor , Numerical Simulation

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