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Keywords = buried depth of perilous rock

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13 pages, 2507 KiB  
Article
Research on Stability Evaluation of Perilous Rock on Soil Slope Based on Natural Vibration Frequency
by Yanchang Jia, Guihao Song, Luqi Wang, Tong Jiang, Jindi Zhao and Zhanhui Li
Appl. Sci. 2023, 13(4), 2406; https://doi.org/10.3390/app13042406 - 13 Feb 2023
Cited by 6 | Viewed by 1966
Abstract
Perilous rock instability on the soil slope brings a substantial threat to project operation and even people’s lives. The buried depth of the perilous rock is a challenge to deal with and primarily determines its stability, and the indirect rapid identification of its [...] Read more.
Perilous rock instability on the soil slope brings a substantial threat to project operation and even people’s lives. The buried depth of the perilous rock is a challenge to deal with and primarily determines its stability, and the indirect rapid identification of its buried depth is the key to its stability evaluation. The paper aims to find a new and quick method to measure the buried depth of perilous rock on the soil slope and to solve the hard-to-measure buried depth stability evaluation. When the damping ratio is less than one, and the deformation is linear elastic throughout the amplitude range, the potentially perilous rock vibration model may reduce to a multi-degree-of-freedom vibration one. By theoretical deduction, a quantitative relationship is established among the perilous rock mass, the basement response coefficient, the buried depth of the perilous rock, and the natural horizontal vibration frequency. In addition, the accuracy of this relationship is confirmed via numerous indoor experiments, showing that the horizontal vibration frequency of the perilous rock model in one dimension increases as the buried depth increases. Finally, based on the natural vibration frequency and guided by the limit balance model, a stability evaluation model of the perilous rock on the soil slope is constructed. Hence, the example shows that the method is feasible. The research findings are of vital significance for the stability evaluation of the perilous rock on the soil slope and give a novel approach and theoretical foundation for quick identification and monitoring. Full article
(This article belongs to the Topic Geotechnics for Hazard Mitigation)
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