Conference Proceedings
Ventilation of Coal Mines, Wollongong
Conference Proceedings
Ventilation of Coal Mines, Wollongong
Problems Due to the Introduction of Longwalls into Mines Previously Mined by Rooms and Pillars or Shortwalls
The need for ventilation around mine workings derives from the various gases found in mine atmospheres and CH4, the principal diluent is in quantity depending upon several factors. Several of these are seam thickness, depth of cover and working method and the French Regulations typify controls on coal mine ventilation. There are many factors affecting production of CH4, in addition to coal production, such as the geological setting of the working seam, the geometry of workings and the rates of advance. The possibilities of spontaneous combustion should not be overlooked. The complexity of high production modern colliery layouts is such that sometimes there maybe 200 airway branches. There are specific differences in ventilation networks between the mining methods of rooms and pillars, shortwalls and longwalls as affecting resistance losses, as well as necessary airflows and ventilating
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C Jeger
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Problems Due to the Introduction of Longwalls into Mines Previously Mined by Rooms and Pillars or ShortwallsPDFThis product is exclusive to Digital library subscription
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- Published: 1983
- PDF Size: 1.091 Mb.
- Unique ID: P198304017