Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating (CPRR)
Researchers from the National Institute for Occupational Safety and Health (NIOSH) are developing a coal pillar rib rating (CPRR) technique to measure the integrity of coal ribs. The CPRR characterizes the rib composition and evaluates its impact on the inherent stability of the coal ribs. The CPRR...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | International Journal of Mining Science and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268620309393 |
| _version_ | 1818870586642792448 |
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| author | Khaled Mohamed Mark Van Dyke Gamal Rashed Morgan M. Sears Robert Kimutis |
| author_facet | Khaled Mohamed Mark Van Dyke Gamal Rashed Morgan M. Sears Robert Kimutis |
| author_sort | Khaled Mohamed |
| collection | DOAJ |
| description | Researchers from the National Institute for Occupational Safety and Health (NIOSH) are developing a coal pillar rib rating (CPRR) technique to measure the integrity of coal ribs. The CPRR characterizes the rib composition and evaluates its impact on the inherent stability of the coal ribs. The CPRR utilizes four parameters: rib homogeneity, bedding condition, face cleat orientation with respect to entry direction, and rib height. All these parameters are measurable in the field. A rib data collecting procedure and a simple sheet to calculate the CPRR were developed. The developed CPRR can be used as a rib quality mapping tool in underground coal mines and to determine the potential of local rib instabilities and support requirements associated with overburden depth. CPRR calculations were conducted for 22 surveyed solid coal ribs, mainly composed of coal units. Based on this study, the rib performance was classified into four categories. A preliminary minimum primary rib support density (PRSD) line was obtained from these surveyed cases. Two sample cases are presented that illustrate the data collection form and CPRR calculations. |
| first_indexed | 2024-12-19T12:09:23Z |
| format | Article |
| id | doaj.art-199d317b87984cab899b8431724ecb88 |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-12-19T12:09:23Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-199d317b87984cab899b8431724ecb882022-12-21T20:22:14ZengElsevierInternational Journal of Mining Science and Technology2095-26862021-01-013111522Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating (CPRR)Khaled Mohamed0Mark Van Dyke1Gamal Rashed2Morgan M. Sears3Robert Kimutis4Corresponding author.; National Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh, PA 15236, USANational Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh, PA 15236, USANational Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh, PA 15236, USANational Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh, PA 15236, USANational Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh, PA 15236, USAResearchers from the National Institute for Occupational Safety and Health (NIOSH) are developing a coal pillar rib rating (CPRR) technique to measure the integrity of coal ribs. The CPRR characterizes the rib composition and evaluates its impact on the inherent stability of the coal ribs. The CPRR utilizes four parameters: rib homogeneity, bedding condition, face cleat orientation with respect to entry direction, and rib height. All these parameters are measurable in the field. A rib data collecting procedure and a simple sheet to calculate the CPRR were developed. The developed CPRR can be used as a rib quality mapping tool in underground coal mines and to determine the potential of local rib instabilities and support requirements associated with overburden depth. CPRR calculations were conducted for 22 surveyed solid coal ribs, mainly composed of coal units. Based on this study, the rib performance was classified into four categories. A preliminary minimum primary rib support density (PRSD) line was obtained from these surveyed cases. Two sample cases are presented that illustrate the data collection form and CPRR calculations.http://www.sciencedirect.com/science/article/pii/S2095268620309393Coal rib stabilityRib support designCoal pillar rib ratingRib quality mappingCPRRCoal classification |
| spellingShingle | Khaled Mohamed Mark Van Dyke Gamal Rashed Morgan M. Sears Robert Kimutis Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating (CPRR) International Journal of Mining Science and Technology Coal rib stability Rib support design Coal pillar rib rating Rib quality mapping CPRR Coal classification |
| title | Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating (CPRR) |
| title_full | Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating (CPRR) |
| title_fullStr | Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating (CPRR) |
| title_full_unstemmed | Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating (CPRR) |
| title_short | Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating (CPRR) |
| title_sort | preliminary rib support requirements for solid coal ribs using a coal pillar rib rating cprr |
| topic | Coal rib stability Rib support design Coal pillar rib rating Rib quality mapping CPRR Coal classification |
| url | http://www.sciencedirect.com/science/article/pii/S2095268620309393 |
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