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Failure Analysis of Abutment-Loaded Underground Coal Mine Stoppings during Explosion
International Journal of Geomechanics
  • Kutay E. Karadeniz
  • Dogukan Guner
  • Taghi Sherizadeh, Missouri University of Science and Technology
Abstract

Underground Mine Structures Like Mine Seals or Built-In-Place (BIP) Refuge Alternatives (RA) Are Exposed to Specific Loadings Like Explosions Because of overlying and Underlying Strata Conditions. Previous Studies Worked on the Vertical Loading Response of Structures Like Abutments from Panel Extraction But Not the Explosion Resistance Upon Being Subjected to These Vertical Strata Loads. in This Study, Two Steel-Reinforced Concrete Wall Designs as Seal and RA Applications Are Simulated to Examine the Performance and Failure Analysis under Abutment-Loading Conditions during an Explosion for a Coal Mine Model using Dynamic Analysis by a Distinct Element Code (3DEC). the Available Abutment Monitoring Data by Longwall Stoppings Was Used to Estimate the Abutment-Loading Conditions. the Model Setup Was Calibrated through Two Validation Stages: (1) the Concrete Wall Simulation with the Explosion Test of Steel-Reinforced Concrete Mine Seal Conducted by Previous Researchers; and (2) the Stress Change at the Strata by the Tailgate Convergence-Abutment-Load Multiplier Curve. the Calibrated Models Are Subjected to Various Dynamic Loadings to Simulate Explosions. the Findings Demonstrate that, in Addition to Magnitude, the Pressure Versus Time Mode of Loading Significantly Influences the Wall Response. Instantaneous Loading Criteria Can Provide More Cautious Measurements to Assess How Well Such Walls Operate in Similar Situations. Except for a Few Cases, the Deformations after a Single Explosion Are More Pronounced for the Effects of Subsequent Second and Third Explosions. as a Result, the Changes in Deformation during Subsequent Explosions Are Relatively Minor Compared with the Initial Permanent Deflections.

Department(s)
Mining Engineering
Comments

National Institute for Occupational Safety and Health, Grant CDC-NIOSH

Keywords and Phrases
  • Abutment stress,
  • Built-in-place refuge alternatives (RA),
  • Coal mine stopping,
  • Mine seal,
  • Underground mining
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Society of Civil Engineers, All rights reserved.
Publication Date
6-1-2024
Publication Date
01 Jun 2024
Disciplines
Citation Information
Kutay E. Karadeniz, Dogukan Guner and Taghi Sherizadeh. "Failure Analysis of Abutment-Loaded Underground Coal Mine Stoppings during Explosion" International Journal of Geomechanics Vol. 24 Iss. 6 (2024) ISSN: 1943-5622; 1532-3641
Available at: http://works.bepress.com/taghi-sherizadeh/47/