Blast Vibration Response of Tunnel Influenced by Confining Pressure and Surrounding Rock Type
Based on the finite element model of the tunnel, dynamic response of tunnel is studied influenced by different confining pressure and different surrounding rock types under of blasting vibration under blast vibration load. The results show that when the confining pressure increases, the maximum hori...
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Published in | Applied Mechanics and Materials Vol. 533; no. Modern Tendencies in Engineering Sciences; pp. 159 - 163 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Zurich
Trans Tech Publications Ltd
01.02.2014
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Subjects | |
Online Access | Get full text |
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Summary: | Based on the finite element model of the tunnel, dynamic response of tunnel is studied influenced by different confining pressure and different surrounding rock types under of blasting vibration under blast vibration load. The results show that when the confining pressure increases, the maximum horizontal and vertical vibration velocity, stress and displacement increase, and the horizontal vibration amplitudes are less than the vertical vibration amplitudes. With the decreasing of the rock type, the vertical vibration velocity peak value increases, and vertical direction vibration velocity is more sensitive for the rock stress state. With the increase of depth of surrounding rock, the confining pressure increases, and the vertical velocity response signal of surrounding rock increases, and the response signal is more sensitive to the change of stress of surrounding rock compared with the horizontal vibration velocity peak. |
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Bibliography: | Selected, peer reviewed papers from the 2014 International Forum on Materials Processing Technology (IFMPT 2014), January 18-19, 2014, Guangzhou, China and the 2014 International Conference on Sensors, Instrument and Information Technology (ICSIIT 2014), 18-19 January, 2014, Guangzhou, China ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISBN: | 9783038350453 3038350451 |
ISSN: | 1660-9336 1662-7482 1662-7482 |
DOI: | 10.4028/www.scientific.net/AMM.533.159 |