Description of Limit States in the Subsurface Layer of Loosened Subsoil in View of Critical State Soil Mechanics

The article aims to present an effective numerical method for the behaviour analysis and safety assessment of a subsurface layer of subsoil in the existing or predicted states of mining and post-mining deformations. Based on our own analytical record, using the equations of the Modified Cam-Clay mod...

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Bibliographic Details
Published in:Materials 2021-11, Vol.14 (23), p.7288
Main Authors: Fedorowicz, Jan, Fedorowicz, Lidia, Kadela, Marta
Format: Article
Language:English
Subjects:
Behavior
Boundary conditions
Clay
Coal mining
Exploitation
Granular materials
Kinematics
Laboratories
Limit states
Mathematical models
Mining
Numerical analysis
Numerical methods
Soil mechanics
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Summary:The article aims to present an effective numerical method for the behaviour analysis and safety assessment of a subsurface layer of subsoil in the existing or predicted states of mining and post-mining deformations. Based on our own analytical record, using the equations of the Modified Cam-Clay model, the description of limit states in the subsurface layer of subsoil was validated, making it consistent with in situ observations. The said effect was demonstrated by comparing numerical analyses of the subsoil layer subjected to the limit state, using the Modified Cam-Clay (MCC) model and the Coulomb-Mohr model (C-M). The article also presents the applicability potential of the numerical analysis of the loosened subsoil layer for the assessment of protection elements (e.g., geo-matresses) used under linear structures in the areas subjected to mining and post-mining impacts.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma14237288