自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 14    No. 1    February 2007

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Experimental study on prediction model for maximum rebound ratio
LEI Wei-dong(雷卫东)1, TENG Jun(滕 军)1, A.HEFNY2, ZHAO Jian(赵 坚)3, 4, GUAN Jiong(关 炯)5

1. Department of Urban and Civil Engineering, Shenzhen Graduate School, Harbin Institute of Technology,Shenzhen 518055, China;2. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore;3. Ecole Polytechnique Federale de Lausanne (EPFL), Rock Mechanics Laboratory, LausanneCH-1015, Switzerland;4. College of Architecture and Civil Engineering, China University of Mining and Technology,Xuzhou 221008, China;5. Kvaerner E&C Singapore Private limited, Aker Kvaerner Asia Pacific, Singapore 118254, Singapore

Abstract:The proposed prediction model for estimating the maximum rebound ratio was applied to a field explosion test, Mandai test in Singapore. The estimated possible maximum peak particle velocities(PPVs) were compared with the field records. Three of the four available field-recorded PPVs lie exactly below the estimated possible maximum values as expected, while the fourth available field-recorded PPV lies close to and a bit higher than the estimated maximum possible PPV. The comparison results show that the predicted PPVs from the proposed prediction model for the maximum rebound ratio match the field-recorded PPVs better than those from two empirical formulae. The very good agreement between the estimated and field-recorded values validates the proposed prediction model for estimating PPV in a rock mass with a set of joints due to application of a two dimensional compressional wave at the boundary of a tunnel or a borehole.

 

Key words: blasting wave; maximum rebound ratio; joint stiffness; field explosion test

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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