Excitation Action Triggered by Perilous Rock Avalanche to the Stability of Perilous Rock

Abstract:

The mechanism failure of massive perilous rock should consider the interaction among perilous rock masses. Study on the stability of adjacent perilous rock from the excitation wave, which is produced by the perilous rock mass at the collapse instantaneousness, has important significance. Focusing on the falling-type perilous rock, physical model of perilous rock with excitation wave is considered and the stress characteristics for the excitation wave of perilous rock avalanche on dominant fissure with normal incidence is analyzed. Based on the fracture mechanics, a method to calculate the combined stress intensity factors of dominant fissure under falling excitation action of perilous rock is established. As the instance results showed, two cites of nature and rainfall, the stability coefficient are both reduce, specially in the horizontal, stability coefficient reduced by about 10% respectively, while in vertical about 2%. The results provided some scientific progresses disasters prevention and mitigation of perilous rock.

• Periodical: Applied Mechanics and Materials (Volumes 368-370)
• Pages: 1633-1639
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.368-370.1633
• Online since: August 2013
• Authors: Hong Mei Tang, Lin Feng Wang, Hong Kai Chen, Zhi Wang
• Keywords: Combined Stress Strength Factor, Dominant Fissure, Excitation Wave, Perilous Rock, Rock Mechanics

References

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DOI: 10.1007/s10483-006-0713-y

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