Abstract
Laminated rocks, which are composed of two types of laminae (referred to as ‘strong lamina’ (SL) and ‘weak lamina’ (WL)), are prevalent in rock engineering construction. Determining their mechanical parameters is crucial, yet obtaining them separately through conventional physical experiments is challenging. While specialized techniques like Nano-indentation testing can be employed, they are often costly (Li et al., Mar Pet Geol 143:105740, 2022), and the relationship between these test results and macroscopic mechanical properties remains uncertain. In this study, a method for estimating the mechanical parameters of SL and WL based on uniaxial tests is proposed. The elastic moduli and Poisson ratios for both materials are derived first, followed by equations estimating their compression and tensile strengths. The internal friction angles and cohesive forces are obtained through correlations of rock mechanics parameters. Two numerical simulations were conducted and compared to physical tests, and the comparison results show that the proposed method is validated. A necessary evaluation method and suggestions for further parameter adjustments are provided. Overall, this method offers significant guidance for engineering projects involving laminated rocks and is worth popularizing.
Highlights
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A method was proposed to estimate the mechanical parameters of the Laminated rocks;
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Only uniaxial tests for the Laminated rock are required in the parameter estimation;
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Numerical simulation was performed and the results were compared to physical tests;
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The comparison results show that the proposed estimation method is validated.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This study was funded by National Natural Science Foundation of China (Grant No. 41972264), Zhejiang Provincial Natural Science Foundation of China (Grant No. LR22E080002), and the Key R&D Project of Zhejiang Province (No. 2021C03159). The authors would also like to thank the two anonymous referees for reviewing the paper and providing valuable suggestions.
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JW: Investigation, Methodology, Software, Writing–original draft. JZ: Funding acquisition, Methodology, Writing–original draft. DZ: Methodology, Review, and editor. QL: Review and editor, Funding acquisition.
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Wang, J., Zheng, J., Zhuang, D. et al. A Method for Estimating the Mechanical Parameters of the Laminae of Laminated Rocks Based On Uniaxial Compression and Tensile Tests. Rock Mech Rock Eng 56, 5885–5902 (2023). https://doi.org/10.1007/s00603-023-03377-1
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DOI: https://doi.org/10.1007/s00603-023-03377-1