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Model for outbursts in coal

Abstract

This paper presents a quantitative model for describing outbursts during underground mining. It is proposed that an outburst is the structural failure of coal caused by gas pressure gradients. The model is used successfully to explain many of the qualitative observations associated with outbursts. For example, it is shown why the following factors tend to increase the occurrence of outbursts: high rates of advance, coal of low permeability; coal with low strength or joints of low strength; and mining at greater depth. The study also considers structural instability that is not instantaneous. The model shows that the way to avoid outbursts is to avoid high pressure gradients at the mine face. The model also serves as a basis for designing degasification procedures that are more efficient than blanket degasification. (24 refs.)
Authors:
Publication Date:
Aug 01, 1986
Product Type:
Journal Article
Reference Number:
EDB-87-020875
Resource Relation:
Journal Name: Int. J. Rock Mech. Min. Sci. Geomech. Abstr.; (United States); Journal Volume: 23:4
Subject:
01 COAL, LIGNITE, AND PEAT; ROCK BURSTS; INHIBITION; UNDERGROUND MINING; COAL; COAL MINING; COAL SEAMS; DEGASSING; DEPTH; DESIGN; FAILURES; INSTABILITY; MATHEMATICAL MODELS; MECHANICAL PROPERTIES; PERMEABILITY; PRESSURE EFFECTS; ROCK MECHANICS; CARBONACEOUS MATERIALS; COAL DEPOSITS; DIMENSIONS; ENERGY SOURCES; FOSSIL FUELS; FUELS; GEOLOGIC DEPOSITS; MATERIALS; MECHANICS; MINERAL RESOURCES; MINING; RESOURCES; 012031* - Coal, Lignite, & Peat- Underground Mining- Strata Mechanics & Control- (1987-)
OSTI ID:
7015248
Country of Origin:
United States
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: IRMGB
Submitting Site:
CLA
Size:
Pages: 327-332
Announcement Date:
Dec 01, 1986

Citation Formats

Paterson, L. Model for outbursts in coal. United States: N. p., 1986. Web. doi:10.1016/0148-9062(86)90644-3.
Paterson, L. Model for outbursts in coal. United States. doi:10.1016/0148-9062(86)90644-3.
Paterson, L. 1986. "Model for outbursts in coal." United States. doi:10.1016/0148-9062(86)90644-3. https://www.osti.gov/servlets/purl/10.1016/0148-9062(86)90644-3.
@misc{etde_7015248,
title = {Model for outbursts in coal}
author = {Paterson, L}
abstractNote = {This paper presents a quantitative model for describing outbursts during underground mining. It is proposed that an outburst is the structural failure of coal caused by gas pressure gradients. The model is used successfully to explain many of the qualitative observations associated with outbursts. For example, it is shown why the following factors tend to increase the occurrence of outbursts: high rates of advance, coal of low permeability; coal with low strength or joints of low strength; and mining at greater depth. The study also considers structural instability that is not instantaneous. The model shows that the way to avoid outbursts is to avoid high pressure gradients at the mine face. The model also serves as a basis for designing degasification procedures that are more efficient than blanket degasification. (24 refs.)}
doi = {10.1016/0148-9062(86)90644-3}
journal = {Int. J. Rock Mech. Min. Sci. Geomech. Abstr.; (United States)}
volume = {23:4}
journal type = {AC}
place = {United States}
year = {1986}
month = {Aug}
}