Study on Damage Characteristics of Unstable Rocks under Excitation Effect

Abstract:

Unstable rock is the typical geological disaster in areas of highway, city and mine. Energy from rupture of unstable rock passes around by excitation wave, which produces significant excitation effect to adjacent unstable rock, and which is one of important reasons to cause the cascading collapse. By the method of wave mechanics calculation equation of peak velocity from unstable rock caused by rest energy through interface between unstable rocks was deduced and established. Based on the rule of Sweden and Canmet, authors proposed damage criteria of unstable rock under excitation effect. According to damage mechanics, authors set up estimation method of microcrack being likely activated to rest unstable rock under excitation effect. Example analysis shows that problem considering excitation damage is an important way of promoting the scientific and transient security analysis of unstable rock. Research results have a positive significance for science reveals of unstable rock failure mechanism.

• Periodical: Applied Mechanics and Materials (Volume 459)
• Pages: 575-581
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.459.575
• Online since: October 2013
• Authors: Hong Kai Chen*, Yun Tao Zhou, Zhi Wang
• Keywords: Damage Characteristics, Excitation Effect, Rock Mechanics, Rupture of Perilous Rocks

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