Abstract
The chief objective of the article is to learn the spatial characteristics of stress distribution around a shallow buried spherical Karst cave containing fill materials in limestone strata. First, considering the effect of external load, stress field in the Earth’s crust, internal filling and Karst geomorphology characteristics in China, a spatial axisymmetrical model was established. Concurrently, combing available work and the concept of elasticity, the boundary conditions are determined. Subsequently, the Love displacement method was introduced, and stress component expressions were obtained. The diagram characteristics of each stress component are summarized, which are affected by various influencing factors. Finally, to prove the rationality of the general solution, a numerical simulation was carried out based on practical engineering, and the maximum error is less than 5%. Thus, the analytical solution could represent the spatial characteristics of stress distribution around a shallow buried spherical karst cave containing fill materials in limestone strata.
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Acknowledgements
The authors are grateful to Yanyan Zhang, Jing Hu and Xiaoxuan Zhang for their assistance.
Funding
The research on which this article is based has been supported by Grants: the Systematic Project of Guangxi Key Laboratory of Disaster Prevention Structural Safety (Grant No: 2019ZKX015), the Science Foundation of Hebei Province (No. E2020210006), Hainan Provincial Natural Science Foundation of China (Grant No: 520QN229), the Scientific Research Startup Foundation of Hainan university (Grant No: KYQD(2R)1723), Key Research and Development Project of Cangzhou Municipal Science and Technology bureau, China(Grant No. 183305006) and National Key R&D Program of China (Grant No. 2018YFC1505501).
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PX carried out the theoretical analysis; SM and HW carried out the numerical simulation; LL carried out the data statistics. All the authors have given final approval for publication.
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Xie, P., Ma, S., Wen, H. et al. Theoretical analysis on stress distribution characteristics around a shallow buried spherical Karst cave containing fill materials in limestone strata. Environ Earth Sci 81, 97 (2022). https://doi.org/10.1007/s12665-021-10112-y
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DOI: https://doi.org/10.1007/s12665-021-10112-y