Exploring and mining gassy coals
About authors
- 1 — Ph.D. managing director Sigra Pty Ltd
- 2 — geologist Sigra Pty Ltd
Abstract
This paper examines the issues of mining gassy coals. These cover a huge range of coal types, gas contents, permeabilities and diffusional behaviour. The key to understanding what approach to take to mining, is an understanding of the geology and the correct measurement of the important parameters. This must be followed by suitable interpretation and a flexible mining approach to dealing with the geology, geotechnical and reservoir conditions. The paper describes some of the techniques used in exploration to define these parameters.
Область исследования:
(Archived) Innovation in designing of mining plants
Keywords:
coal
exploration
gassy
methane
permeability
diffusion behaviour
degasation
sorption isotherm
stress
strain
geotechnical characteristics
References
- AS 3980, Australian Standard™. Guide to the determination of gas content of coal – Direct desorption method, second edition, 1999.
- Crank J. The Mathematics of Diffusion, 2nd Edition. Oxford: Clarendon Press, 1975.
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