Shape effects on the coefficient of restitution during rockfall impacts

Kam Tim Chau, R. H.C. Wong, J. Liu, J. J. Wu, C. F. Lee

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

25 Citations (Scopus)


Rockfall mitigation technique, such as rock fence, is extremely important in protecting Highway as well as residential buildings in many mountainous countries. In practice, rockfall simulation computer programs are commonly used for the acquirement of the required rockfall parameters. They include the probabilities of the horizontal and vertical travel distances of the probable rockfall events, the bouncing height at various positions along the slope, and the impact energy of rockfalls at location at which the mitigation devices are going to be installed. The most crucial input parameter that controls the final output of the rockfall statistics is the coefficient of restitution. This paper considers the shape effect of boulders on the coefficient of restitution, and it is found that the tangential component of coefficient of restitution is relatively insensitive to the shape of the boulder whereas the normal component of coefficient of restitution increases with the angularity of the boulders.
Original languageEnglish
Title of host publication20th Century Lessons, 21st Century Challenges.
Number of pages4
Publication statusPublished - 1 Dec 1999
Event40th Interscience Conference on Antimicrobial Agents and Chemotherapy -
Duration: 17 Sep 199920 Sep 1999


Conference40th Interscience Conference on Antimicrobial Agents and Chemotherapy

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

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