Surface subsidence prediction by nonlinear finite-element analysis
- Kansas State Univ., Manhattan, KS (United States). Dept. of Civil Engineering
- Univ. of Oklahoma, Norman, OK (United States). School of Civil Engineering and Environmental Science
An improved two-dimensional plane-strain numerical procedure based on the incremental-iterative nonlinear finite-element is developed to predict ground subsidence caused by underground mining. The procedure emphasizes the use of the following features: (1) an appropriate constitutive model that can accurately describe the nonlinear behavior of geological strata; and (2) an accurate algorithm for simulation of excavation sequences consistent with the actual underground mining process. The computer code is used to analyze a collapse that occurred in the Blue Goose Lease [number sign]1 Mine in northeastern Oklahoma. A parametric study is conducted to investigate the effects of some selected factors on the shape and extent of subsidence profiles. Analyses of the numerical results indicate that the nonlinear finite-element technique can be employed to meaningfully predict and characterize the potential for ground subsidence due to underground mining.
- OSTI ID:
- 5720019
- Journal Information:
- Journal of Geotechnical Engineering; (United States), Vol. 119:11; ISSN 0733-9410
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GROUND SUBSIDENCE
FORECASTING
MATHEMATICAL MODELS
UNDERGROUND MINING
ALGORITHMS
COAL MINING
FINITE ELEMENT METHOD
NUMERICAL ANALYSIS
TWO-DIMENSIONAL CALCULATIONS
CALCULATION METHODS
MATHEMATICAL LOGIC
MATHEMATICS
MINING
NUMERICAL SOLUTION
012031* - Coal
Lignite
& Peat- Underground Mining- Strata Mechanics & Control- (1987-)