Study of the Mechanics of Groundwater Aquifer/Aquitard Expansion Caused by Heating

摘要

FORTRAN computer models were developed to predict the expansion and contraction caused by injection-storage-retrieval cycles associated with aquifer storage and recovery of thermal energy. The model is based on four volume change components: (1) reversible volume change caused by temperature change (2) irreversible volume change caused by temperature change (3) volume change caused by decrease in effective stress in an undrained geotechnical material and (4) dissipation of excess pore pressure through a consolidation process. The computer results were compared to field observations obtained from a thermal energy-aquifer storage demonstration experiment in Mobile, Alabama.