Prediction of surface deformations over longwall panels in the Northern Appalachian Coalfield
This paper describes the Bureau of Mines development of a novel subsidence prediction methodology suitable to the mining and geologic conditions in the Northern Appalachian Coal Region. It describes the computation of vertical and horizontal movements, inclination, curvature, and horizontal strains. The substance of this method is the separation of the effects of lithology by introducing a correlation between hypothetically homogenous overburden and existing lithologic conditions, while providing for different mining conditions such as underground geometry and overburden thickness. The effects of lithology have been expressed in the form of a variable subsidence coefficient within the subsidence trough. Results from additional longwall panel studies not included in the regression analysis were used to prove the validity of this method. To facilitate the use of this pre-calculation methodology, a computer program was written in BASIC for use on a personal computer.
- OSTI ID:
- 7182377
- Country of Publication:
- United States
- Language:
- English
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Precalculation of subsidences over longwall panels in the Northern Appalachian Coal Field
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Related Subjects
012031* -- Coal
Lignite
& Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-)
012034 -- Coal
Lignite
& Peat-- Underground Mining-- Automation
Monitoring
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99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
APPALACHIA
COAL DEPOSITS
COAL SEAMS
COMPUTER CALCULATIONS
COMPUTERS
CORRELATIONS
DATA ACQUISITION
DEFORMATION
DIGITAL COMPUTERS
FORECASTING
GEOLOGIC DEPOSITS
GEOLOGIC STRATA
GEOLOGIC STRUCTURES
GEOLOGIC SURVEYS
GEOMETRY
GROUND SUBSIDENCE
HYPOTHESIS
INCLINED STRATA
LITHOLOGY
LONGWALL MINING
MATHEMATICS
MINERAL RESOURCES
MINING
NATIONAL ORGANIZATIONS
NORTH AMERICA
PERSONAL COMPUTERS
REGRESSION ANALYSIS
RESOURCES
STATISTICS
SURVEYS
TECHNOLOGY ASSESSMENT
UNDERGROUND MINING
US BUREAU OF MINES
US DOI
US ORGANIZATIONS
USA