Postburn roof stability analysis for the TONO CRIP UCG burn
During the Ninth Annual Underground Coal Gasification Symposium, Sutherland, Hommert, Taylor, and Benzley presented a preburn prediction for the burn, roof fall and surface subsidence for the TONO CRIP UCG site in Washington state. That burn has now been completed and postburn measurements of cavity sizes have become available. In this manuscript the authors show that the preburn predictions are, in general, in good agreement with the postburn examination of the burn site. Discrepancies between the predictions and the measurements are shown to arise for two reasons. The first is that the burn sequence analyzed in the prediction was not allowed during the course of the experiment due to experimental difficulties. The second reason is that the stratigraphic section analyzed in the preburn predictions is slightly different form that observed above the burn. To clarify the discrepancies, the roof stability of the measured burn cavity is analyzed using the two analysis schemes that were used in the preburn analysis.
- Research Organization:
- Sandia National Labs., Albuquerque, NM 87185
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5492647
- Journal Information:
- In Situ; (United States), Journal Name: In Situ; (United States) Vol. 10:2; ISSN ISOMD
- Country of Publication:
- United States
- Language:
- English
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CARBONACEOUS MATERIALS
CAVING
CAVITIES
CHEMICAL REACTION KINETICS
COAL
COAL GASIFICATION
COMBUSTION KINETICS
CRACK PROPAGATION
ENERGY SOURCES
FEDERAL REGION X
FINITE ELEMENT METHOD
FOSSIL FUELS
FUELS
GASIFICATION
GEOLOGY
GROUND SUBSIDENCE
IN-SITU GASIFICATION
IN-SITU PROCESSING
KINETICS
MATERIALS
MATHEMATICAL MODELS
NORTH AMERICA
NUMERICAL SOLUTION
PROCESSING
REACTION KINETICS
RESEARCH PROGRAMS
ROOFS
SIZE
STABILITY
STRATA CONTROL
STRATIGRAPHY
THERMOCHEMICAL PROCESSES
USA
WASHINGTON