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Conference Proceedings

Ground Movement and Control Related to Coal Mining, Wollongong

Conference Proceedings

Ground Movement and Control Related to Coal Mining, Wollongong

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Temporary Support Load Development Along a Longwall Face Drivage

The combination of shot-firing and stage loader, and a prop and bar support system is an accepted drivage method. The support configuration is based on the final prop density, and assumes relitively uniform load sharing between the props. During the development of a longwall faceline at a medium depth (approximately 600m) British coal mine using such a drivage method, a fall occured overnight, effectively closing approximately 40m of the drivage. The severity and speed of the fall prompted an investigation into the performance of the temporary support system installed prior to chock installation. This paper deals with the investigation which disclosed some major contributory factors towards loss of strata control.
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  • Published: 1986
  • PDF Size: 0.447 Mb.
  • Unique ID: P198603032

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