Thermo-mechanical responses of containment materials for geoenvironmental applications
Thermo-mechanical responses of containment materials for geoenvironmental applications
Underground space is a safe and reliable option for large-scale, cryogenic energy storage in industrial and commercial areas. In the design and operation of underground storage facilities, the performance of the storage facilities relies heavily on the thermo-mechanical responses of containment materials under external geological environments and internal storage conditions. However, the thermo-mechanical responses of containment materials under temperature gradient and earth pressure conditions remain not fully understood. Here we experimentally investigate the contributions of thermal and mechanical loads to the strain evolution of rock and concrete and highlight the influence of circular hole and rough fracture on the strain evolution. The results show that the mechanical load mainly controls the strain evolution of the intact limestone, while the thermal load strongly affects the strain evolution around the circular hole. The failure pattern of concrete primarily influences the mechanically induced strain, and the thermally induced strain is insensitive to the concrete failure. The test system can be modified and upgraded to study various research topics related to underground energy storage.
D. Lu; W. Wu
9th International Congress on Environmental Geotechnics (ICEG2023)
Coupled Processes in Environmental Geotechnics
Contaminant Transport, Geoenvironmental Engineering, Underground Structures
https://doi.org/10.53243/ICEG2023-446
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