AI Article Synopsis
- A limestone mine in Ohio has experienced major roof falls due to instability, prompting a study on how weak, moisture-sensitive floor contributes to these issues.
- Previous research by NIOSH did not specifically address weak floors and emphasized the need for advanced analysis when such problems arise.
- The study utilizes FLAC3D numerical models to better understand the impacts of weak floors on the stability of roofs and pillars, providing crucial insights for mine operators about the risks of roof collapse and ground subsidence.
Article Abstract
A limestone mine in Ohio has had instability problems that have led to massive roof falls extending to the surface. This study focuses on the role that weak, moisture-sensitive floor has in the instability issues. Previous NIOSH research related to this subject did not include analysis for weak floor or weak bands and recommended that when such issues arise they should be investigated further using a more advanced analysis. Therefore, to further investigate the observed instability occurring on a large scale at the Ohio mine, FLAC3D numerical models were employed to demonstrate the effect that a weak floor has on roof and pillar stability. This case study will provide important information to limestone mine operators regarding the impact of weak floor causing the potential for roof collapse, pillar failure, and subsequent subsidence of the ground surface.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4831069 | PMC |
| http://dx.doi.org/10.1016/j.ijmst.2016.02.016 | DOI Listing |
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