Coupled Thermo-Mechanical and Poro-Mechanical Response Evaluations Associated with Underground Coal Conversion. Final Report, June 1982-December 1985

摘要

Research investigations on hygrothermomechanical response modeling associated with underground coal conversion processes are reported. In particular, stress mediated cavity shapes and subsidence profiles for several field experiments are evaluated from the developed thermostructural models. These finite element codes utilize temperature dependent material properties with different constitutive characterizations, depending on the desired predictive capabilities and field applications. On the basis of the conducted thermo-elastic, thermo-elastoplastic, thermal consolidation, cavity spalling model, and parametric sensitivity simulations, criteria related to UCC site selection, cavity roof, and subsidence response prediction are identified and discussed. 15 refs., 11 figs. (ERA citation 11:003695)