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Numerical simulations of the failure process of anaclinal slope physical model and control mechanism of negative Poisson’s ratio cable

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Abstract

Occurrence of toppling failure has been prominent due to the increasing of infrastructure construction, such as road slopes, dams, and hydroelectric stations. Many scholars have done research on the toppling failure characteristics, but paid less attention to the comparison of numerical simulations and physical models in order to propose reasonable and effective stability control methods. Based on previous tests on physical model and field investigations, a numerical model of an anaclinal slope using the three-dimension distinct element code (3DEC) software has been built to simulate the failure process of the physical model. Based on the prominent mechanical properties of the engineering-scale and model-scale negative Poisson’s ratio (NPR) cables, a numerical simulation model of the NPR cable has been developed. The numerical model has been used to simulate the effects of different types of model-scale cables on controlling the deformation of the anaclinal slope. The numerical results show that standard cables, i.e., Poisson’s ratio (PR) cables, cannot control the large deformations of the slope, and the slope finally fails. On the opposite, NPR cables can absorb the deformation energy and maintain the stable constant resistance force during the tensile process. This thereby allows avoiding tensile breakage of cables under the effect of large deformations of the slope and driving the slope towards a new equilibrium state. Through the comparison between the numerical simulation results and the physical model test results, the accuracy and rationality of the numerical simulations have been proven. The numerical model developed in this study can be used for future research works on the failure mechanism of anaclinal slopes and the control effect of NPR cables. It thereby lays a foundation for applying the NPR cables to control the toppling deformations of similar anaclinal slopes.

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Funding

This study was supported by the Fundamental Research Funds for the Central Universities (No. B210201001), the open fund of Engineering Research Center of Development and Management for Low to Ultra-Low Permeability Oil & Gas Reservoirs in West China, Ministry of Education (No. KFJJ-XB-2020-7), the Key Special Project of National Natural Science Foundation of China (No. 41941018), the open fund of Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (No. ZJRMG-2020-02), the Research and Development Project of Guizhou University of Engineering Science (No. G2018016), and Technology top talent support project of Guizhou Provincial Education Department (No. [2017]098).

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Authors and Affiliations

  1. School of Earth Sciences and Engineering, Hohai University, Nanjing, 210098, China

    Chun Zhu

  2. Engineering Research Center of Development and Management for Low to Ultra-Low Permeability Oil & Gas Reservoirs in West China, Ministry of Education, Xi’an Shiyou University, Xi’an, 710065, China

    Chun Zhu

  3. State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining & Technology (Beijing), Beijing, 100083, China

    Chun Zhu, Manchao He, Xiaohu Zhang & Zhigang Tao

  4. School of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia

    Chun Zhu & Murat Karakus

  5. School of Civil Engineering, Guizhou University of Engineering Science, Bijie, 551700, Guizhou, China

    Xiaohu Zhang

Authors
  1. Chun Zhu
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  2. Manchao He
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  3. Murat Karakus
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  4. Xiaohu Zhang
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  5. Zhigang Tao
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The manuscript was approved by all authors for publication.

Corresponding author

Correspondence to Zhigang Tao.

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We would like to declare that the described work was an original research that has not been previously published.

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Zhu, C., He, M., Karakus, M. et al. Numerical simulations of the failure process of anaclinal slope physical model and control mechanism of negative Poisson’s ratio cable. Bull Eng Geol Environ 80, 3365–3380 (2021). https://doi.org/10.1007/s10064-021-02148-y

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  • DOI: https://doi.org/10.1007/s10064-021-02148-y

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