Modeling the underground coal gasification process: part III-subsidence
The cavity created by underground coal gasification (UCG) will be associated with some degree of subsidence in the overburden above the cavity. Subsidence refers to the adjustment in the earth which is made in response to the creation of a subsurface cavity. This subsidence can take a variety of forms, some of which can cause considerable damage both to the environment and to the UCG process and associated equipment. This article reviews the physical and geometrical factors which must be considered in subsidence modeling and the empirical, analytical, numerical, and phenomenological approaches used to model subsidence in UCG. Finally, the results of applying these subsidence models to UCG field tests are reviewed.
- Research Organization:
- Department of Chemical Engineering, University of Colorado, Boulder, CO
- OSTI ID:
- 6336264
- Journal Information:
- ACS Symp. Ser.; (United States), Vol. 79:226
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GROUND SUBSIDENCE
MATHEMATICAL MODELS
IN-SITU GASIFICATION
CAVITIES
COAL
ENVIRONMENTAL IMPACTS
OVERBURDEN
SIMULATION
CARBONACEOUS MATERIALS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASIFICATION
IN-SITU PROCESSING
MATERIALS
PROCESSING
THERMOCHEMICAL PROCESSES
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