Coal rib response during bench mining: A case study
| Autor: | Khaled M. Mohamed, Morgan M. Sears, Mark Van Dyke, John Rusnak, Michael Sloan, Gamal Rashed |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:TN1-997
0211 other engineering and technologies Energy Engineering and Power Technology 02 engineering and technology Article Rib support 020401 chemical engineering Mining engineering Geomechanics Geochemistry and Petrology Coal 0204 chemical engineering Retreat mining lcsh:Mining engineering. Metallurgy Thick seam 021101 geological & geomatics engineering business.industry Pillar Coal mining Geotechnical Engineering and Engineering Geology Overburden Bench mining Rib response Deep cover business Geology |
| Zdroj: | International Journal of Mining Science and Technology, Vol 28, Iss 1, Pp 107-113 (2018) International journal of mining science and technology |
| ISSN: | 2095-2686 |
| Popis: | In 2016, room-and-pillar mining provided nearly 40% of underground coal production in the United States. Over the past decade, rib falls have resulted in 12 fatalities, representing 28% of the ground fall fatalities in U.S. underground coal mines. Nine of these 12 fatalities (75%) have occurred in room-and-pillar mines. The objective of this research is to study the geomechanics of bench room-and-pillar mining and the associated response of high pillar ribs at overburden depths greater than 300 m. This paper provides a definition of the bench technique, the pillar response due to loading, observational data for a case history, a calibrated numerical model of the observed rib response, and application of this calibrated model to a second site. Keywords: Deep cover, Bench mining, Thick seam, Retreat mining, Rib response, Rib support |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|