Abstract
A simplified geomechanical model was proposed by considering three typical necking-type slopes; this model lays a foundation for the further investigation of the deformation behaviors of such slopes. Three physical models of necking-type slopes were built according to the geomechanical model with slope evolution stages. Finally, preliminary calculations related to the arching effect in the physical model were conducted. Three evolution stages of necking-type slopes, namely, the initial stage, compression stage, and failure stage, were presented based on the formation and disappearance of the arching effect within the slope. The specific parameters of the geomechanical model were given. In the setup of the tilting test, the failure angle of the necking-type slope model was calculated to be approximately 50° with a large lateral resistance coefficient. The proposed geomechanical model and physical models of necking-type slopes provide guidance for the establishment of geomechanical and physical models of landslides at specific sites.
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Acknowledgments
This study was funded by the National Nature Science Foundation of China (No. 42207216), the National Major Scientific Instruments and Equipment Development Projects of China (No. 41827808) and the National Key Research and Development Program of China (No. 2017YFC1501305). The authors sincerely thank the anonymous reviewers for their useful suggestions. The final publication is available at Springer via https://doi.org/10.1007/s12583-021-1573-1.
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Fang, K., Tang, H., Zhu, J. et al. Study on Geomechanical and Physical Models of Necking-Type Slopes. J. Earth Sci. 34, 924–934 (2023). https://doi.org/10.1007/s12583-021-1573-1
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DOI: https://doi.org/10.1007/s12583-021-1573-1