Abstract
The change in rock mechanical properties during the freeze-thaw (F-T) cycles is crucial to study the stability of slope engineering in cold regions. In this paper, the rock on the slope of the road along the Yalu River is selected for creep test under freeze-thaw conditions. Then, the mechanical parameters of the rock mass are determined by parameter identification and model verification. Next, based on the Cvisc model in FLAC3D, the stability of the highway slope is calculated by the strength reduction method (SRM) with the consideration of creep characteristics of the rock under freeze-thaw conditions and the creep curves of the monitoring points under different reduction factors are obtained. Finally, the displacement variation of the creep curve is analyzed and compared with the monitoring data to verify the correctness of the model, and it determines the safety factor of the slope engineering considering the creep characteristics under freeze-thaw conditions. It proves that the F-T cycles and creep characteristics of rock mass have negative effects on the long-term stability of slope engineering. Therefore, during the design process of slope engineering, the influence of F-T cycles and creep characteristics on the slope should be considered.
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Funding
This work was supported by the National Natural Science Foundation of China (No. 51678101, No. 52078093), the LiaoNing Revitalization Talents Program (Grant No. XLYC1905015), and the Doctoral innovation Program of Dalian Maritime University (Grant No: BSCXXM015).
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Responsible editor: Zeynal Abiddin Erguler
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Yang, X., Jiang, A. & Zheng, S. Analysis of the effect of freeze-thaw cycles and creep characteristics on slope stability. Arab J Geosci 14, 1033 (2021). https://doi.org/10.1007/s12517-021-07290-1
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DOI: https://doi.org/10.1007/s12517-021-07290-1