Subsidence associated with single and multi-cavities for underground coal gasification

Journal Article · Tue Jun 01 00:00:00 EDT 1982 · J. Energy Resour. Technol.; (United States)

DOI:https://doi.org/10.1115/1.3230401· OSTI ID:6162122

Avasthi, J M; Harloff, G J

An extension of the 3-dimensional theoretical development of Berry and Sales has brought their subsidence predictions into agreement with the NCB's comprehensive set of empirical data. The new elastic parameters fit the amplitude of ground level subsidence. Another modification of the theory makes the subsidence profiles agree with the NCB data. The extended theory has predicted: (1) subsidence for an actual US coalmining case with multiple cavities, and (2) subsidence level and profile for a recent in situ coal-gasification test carried out in Wyoming in a steeply dipping seam.

• OSTI ID: 6162122
• Journal Information: J. Energy Resour. Technol.; (United States), Vol. 104:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
GROUND SUBSIDENCE
FORECASTING
IN-SITU GASIFICATION
CALCULATION METHODS
CAVITIES
COAL GASIFICATION
COAL MINING
EQUATIONS
THREE-DIMENSIONAL CALCULATIONS
UNDERGROUND MINING
GASIFICATION
IN-SITU PROCESSING
MINING
PROCESSING
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification
010900 - Coal
Lignite
& Peat- Environmental Aspects