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http://dx.doi.org/10.7474/TUS.2022.32.1.020

Numerical Stability Evaluation of Underground Semi-Spherical Cavity  

Lee, Taegeon (Civil Engineering Design Team, Civil Works and the Environment Division, Hanwha E&C)
Ryu, Dong-Woo (Geo-ICT Convergence Research Department, Korea Institute of Geoscience & Mineral Resources)
Youn, Heejung (Dept. of Civil and Environmental Engineering, Hongik University)
Publication Information
Tunnel and Underground Space / v.32, no.1, 2022 , pp. 20-29 More about this Journal
Abstract
The existence of underground cavity should be considered in the assessment of georisk such as ground subsidence. Even if the shear strength of the ground around the cavity is known, it is difficult to accurately analyze the safety around the cavity due to the uncertainties related to geometric conditions such as the cavity size. In this paper, stability chart representing dimensionless stability constants was proposed based on the ground strength and geometric conditions. Numerical analysis had been carried out accounting for the stability constants such as the ground strength, the adhesion and friction angles, and the size and depth of the underground cavity. The proposed charts can help estimating the stability of ground with underground circular cavity.
Keywords
Stability chart; Underground cavity; Ground subsidence; Numerical analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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