Evaluation of stress-control layout at the Subtropolis Mine, Petersburg, Ohio
The Subtropolis room-and-pillar mine extracts the Vanport Limestone (Allegheny Formation, Pennsylvanian System) near Petersburg, Ohio. Strata instability problems associated with excessive concentrations of lateral stress caused the mine operator to implement a change in layout design. This mining method has been identified as a stress control layout and has been used by other underground stone mines in the past with varying degrees of success. Practical experience has shown that entry headings advance in the direction of the principal lateral stress, producing lower stress concentrations with better mining conditions. It is important to minimize stress concentrations along the mining front, so an arrow-shaped advance is recommended. This technique advances more developments (headings) in a "good" direction and reduces developments (crosscuts) in the "bad direction." As is expected, the stress control layout enhances the potential for shear failures in crosscuts. It is, therefore, important to focus crosscut engineering interventions that either: (a) lower stress concentrations (for example, an arched roof) or (b) enhance strength of the strata containing the shears (for example, rock reinforcement). This study focuses on observing strata conditions on a regular basis and monitoring the response of these strata to changing geologic and mining conditions through 3D Dynamic LiDAR scans.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:30 |
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| Enthalten in: |
International journal of mining science and technology - 30(2020), 1 vom: 08. Jan., Seite 77-83 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Iannacchione, Anthony [VerfasserIn] |
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| Links: |
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| Themen: |
Horizontal stress |
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| Anmerkungen: |
Date Revised 10.01.2021 published: Print Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.ijmst.2019.12.009 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM309942195 |
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| 520 | |a The Subtropolis room-and-pillar mine extracts the Vanport Limestone (Allegheny Formation, Pennsylvanian System) near Petersburg, Ohio. Strata instability problems associated with excessive concentrations of lateral stress caused the mine operator to implement a change in layout design. This mining method has been identified as a stress control layout and has been used by other underground stone mines in the past with varying degrees of success. Practical experience has shown that entry headings advance in the direction of the principal lateral stress, producing lower stress concentrations with better mining conditions. It is important to minimize stress concentrations along the mining front, so an arrow-shaped advance is recommended. This technique advances more developments (headings) in a "good" direction and reduces developments (crosscuts) in the "bad direction." As is expected, the stress control layout enhances the potential for shear failures in crosscuts. It is, therefore, important to focus crosscut engineering interventions that either: (a) lower stress concentrations (for example, an arched roof) or (b) enhance strength of the strata containing the shears (for example, rock reinforcement). This study focuses on observing strata conditions on a regular basis and monitoring the response of these strata to changing geologic and mining conditions through 3D Dynamic LiDAR scans | ||
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| 650 | 4 | |a Stress-control layouts | |
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| 700 | 1 | |a Esterhuizen, Gabriel |e verfasserin |4 aut | |
| 700 | 1 | |a Slaker, Brent |e verfasserin |4 aut | |
| 700 | 1 | |a Murphy, Michael |e verfasserin |4 aut | |
| 700 | 1 | |a Cope, Natalie |e verfasserin |4 aut | |
| 700 | 1 | |a Thayer, Scott |e verfasserin |4 aut | |
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