Empirical Model for Predicting Rockfall Trajectory Direction

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• 作者：Pavlos Asteriou ; George Tsiambaos
• 关键词：Rockfall analysis ; Laboratory and field tests ; Deviation ; Coefficient of restitution ; Shape effect ; Lateral dispersion
• 刊名：Rock Mechanics and Rock Engineering
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：49
• 期：3
• 页码：927-941
• 全文大小：4,616 KB
• 参考文献：Agliardi F, Crosta GB (2003) High resolution three-dimensional numerical modelling of rockfalls. Int J Rock Mech Min Sci 40:455–471. doi:10.​1016/​S1365-1609(03)00021-2 CrossRef
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• 作者单位：Pavlos Asteriou (1)
  George Tsiambaos (1)
  
  1. Department of Geotechnical Engineering, School of Civil Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., 15780, Athens, Greece
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geophysics and Geodesy
  Civil Engineering
  
• 出版者：Springer Wien
• ISSN：1434-453X

文摘

A methodology for the experimental investigation of rockfall in three-dimensional space is presented in this paper, aiming to assist on-going research of the complexity of a block’s response to impact during a rockfall. An extended laboratory investigation was conducted, consisting of 590 tests with cubical and spherical blocks made of an artificial material. The effects of shape, slope angle and the deviation of the post-impact trajectory are examined as a function of the pre-impact trajectory direction. Additionally, an empirical model is proposed that estimates the deviation of the post-impact trajectory as a function of the pre-impact trajectory with respect to the slope surface and the slope angle. This empirical model is validated by 192 small-scale field tests, which are also presented in this paper. Some important aspects of the three-dimensional nature of rockfall phenomena are highlighted that have been hitherto neglected. The 3D space data provided in this study are suitable for the calibration and verification of rockfall analysis software that has become increasingly popular in design practice.