Numerical prediction of subsidence with coupled geomechanical-hydrological modeling

Conference · Thu Jan 01 00:00:00 EST 1981

OSTI ID:5575356

Girrens, S P; Anderson, C A; Bennett, J G; Kramer, M

A coupled finite element geomechanical-hydrology code is currently under development for application to the problem of predicting groundwater disturbances associated with mine subsidence. The structural-fluid coupling is addressed by calculating the subsided mine geometry, with emphasis placed on determining the strata disturbance and locating damaged regions, for input into a hydrology code, which determines localized volume flow rates and aquifer fluctuations. Benefits from coupling will be best realized when field measurements, an additional aspect of the study concurrent with analytical investigations, indicating the relationship between increasing rock strain and increasing permeability are incorporated into hydraulic material descriptions. Hydrologic and structural calculations are presented to demonstrate computational capabilities applicable to mine subsidence.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5575356
• Report Number(s): LA-UR-81-3700; CONF-811173-1; ON: DE82006136
• Resource Relation: Conference: Workshop on surface subsidence due to underground mining, Morgantown, WV, USA, 30 Nov 1981
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
01 COAL, LIGNITE, AND PEAT
HYDROLOGY
MATHEMATICAL MODELS
MINES
GROUND SUBSIDENCE
AQUIFERS
FINITE ELEMENT METHOD
FLUID FLOW
GROUND WATER
PERMEABILITY
STRAINS
HYDROGEN COMPOUNDS
NUMERICAL SOLUTION
OXYGEN COMPOUNDS
UNDERGROUND FACILITIES
WATER
580100* - Geology & Hydrology- (-1989)
012000 - Coal
Lignite
& Peat- Mining