Abstract
The decrease in strength of potential slip surface after an earthquake and heavy rainfall, is one of the main causes of rock failures. However, fundamental natural frequency can demonstrate the changes in physical and mechanical parameters and support a real-time quantitative assessment of the safety of rocks. This study applied Laser Doppler Vibrometry in an experiment called Frozen-Thawing Test (FTT) in which the entire collapse process caused by strength degradation is simulated. The results show that the safety factor calculated by fundamental natural frequency can give us a new method for stability assessment of unstable rocks. Therefore, the method can satisfy real-time safety evaluation of unstable rocks and will offer a foundation for better responses to rock collapse.
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