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Effect of Stress on Permeability of Coal.

Authors
Somerton-WH; Soylemezoglu-IM; Dudley-RC
Source
NTIS: PB/235-854 Available for Reference At Bureau Libraries :56 pages
Link
NIOSHTIC No.
10000640
Abstract
This report (Contract No. H0122027) discusses the effect of stress on the permeability of three bituminous coals to nitrogen and methane. Test stress conditions simulated stresses possible in underground environments to depths of 2,000 feet. The study found that the permeabilities of different samples of the same coal varied over a wide range, that permeabilities decreased by one or two orders of magnitude with increasing stress, and that the permeability of coal is very dependent on previous loading and unloading of the sample.
Publication Date
19740101
Document Type
CP; Final Contract Report;
Fiscal Year
1974
NTIS Accession No.
PB-235854
NTIS Price
A05
Identifying No.
OFR 45-74
NIOSH Division
PRC;
Source Name
NTIS: PB/235-854; Available for Reference At Bureau Libraries
State
CA;
Performing Organization
University of California
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