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Coal-Face Fracture With A Two-Phase LiquidIn new method for mining coal without explosive, two-phase liquid such as CO2 and water, injected at high pressure into deeper ends of holes drilled in coal face. Liquid permeates coal seam through existing microfractures; as liquid seeps back toward face, pressure eventually drops below critical value at which dissolved gas flashvaporizes, breaking up coal.
Document ID
19840000090
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Collins, E. R., Jr. (CALTECH)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: NASA Tech Briefs
Volume: 8
Issue: 3
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
NPO-15849
Accession Number
84B10090
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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