Study on a Quantitative Indicator for Surface Stability Evaluation of Limestone Strata with a Shallowly Buried Spherical Karst Cave

Peng Xie, Huchen Duan, Haijia Wen, Chao Yang, Shaokun Ma and Zurun Yue
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Peng Xie: College of Civil Engineering and Architecture, Hainan University, Haikou 570228, China
Huchen Duan: College of Civil Engineering and Architecture, Hainan University, Haikou 570228, China
Haijia Wen: School of Civil Engineering, Chongqing University, Chongqing 400045, China
Chao Yang: Key Laboratory of Geological Hazards on Three Gorges Reservoir Area (China Three Gorges University), Ministry of Education, No. 8 University Road, Yichang 443002, China
Shaokun Ma: Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning 530004, China
Zurun Yue: State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang 050043, China

Mathematics, 2022, vol. 10, issue 12, 1-14

Abstract: This paper developed a quantitative evaluation necessary to ensure ground stability, so a quantitative indicator (bearing capacity). A homogeneous axisymmetric model was generated, considering China’s stress field and the Karst topography characteristics, simultaneously obtaining stress component expression. We then determined the bearing capacity calculation formula by combining the strength theory of shear failure and the stress component expressions. Finally, the comparison of the bearing capacity calculation results between theoretical analysis and a numerical simulation indicated that the error was less than 5%, and the result verified the rationality of the formula.

Keywords: ground stability; shallowly buried cave; quantitative evaluation; bearing capacity; love displacement function (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
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