Compressed air energy storage(CAES)has emerged as a grid-scale energy storage linchpin,providing diurnal-to-seasonal timescale energy buffering for renewable power integration.Diverging from conventional salt cavernde...Compressed air energy storage(CAES)has emerged as a grid-scale energy storage linchpin,providing diurnal-to-seasonal timescale energy buffering for renewable power integration.Diverging from conventional salt caverndependent approaches,artificial cavern-based CAES unlocks geographical adaptability through engineered underground containment.This study systematically reviews critical technologies in chamber construction,including site selection,structural design,excavation methods,and post-construction evaluation.Site selection employs a multi-criteria matrix that combines geological and environmental factors.Structural design integrates spatial layout,burial depth,sealing system,and component compatibility to ensure chamber stability.Excavation prioritizes controlled blasting for homogeneous rock,while a tunnel boring machine is deployed in fractured zones to preserve integrity.Postconstruction assessments validate load-bearing capacity,sealing performance,and operational readiness,supported by data-driven maintenance strategies.Ongoing challenges include site-specific geological risks,sealing system durability under cyclic loading,equipment integration,field-scale validation,standardization gaps,and cost-efficiency optimization.These innovations will establish best practices for building large-scale,high-efficiency CAES plants with ultra-long duration and grid resilience,accelerating the transition to carbon-neutral power systems.展开更多
基金National Natural Science Foundation of China,Grant/Award Number:52474080National Key R&D Program of China,Grant/Award Number:2024YFB4007100。
文摘Compressed air energy storage(CAES)has emerged as a grid-scale energy storage linchpin,providing diurnal-to-seasonal timescale energy buffering for renewable power integration.Diverging from conventional salt caverndependent approaches,artificial cavern-based CAES unlocks geographical adaptability through engineered underground containment.This study systematically reviews critical technologies in chamber construction,including site selection,structural design,excavation methods,and post-construction evaluation.Site selection employs a multi-criteria matrix that combines geological and environmental factors.Structural design integrates spatial layout,burial depth,sealing system,and component compatibility to ensure chamber stability.Excavation prioritizes controlled blasting for homogeneous rock,while a tunnel boring machine is deployed in fractured zones to preserve integrity.Postconstruction assessments validate load-bearing capacity,sealing performance,and operational readiness,supported by data-driven maintenance strategies.Ongoing challenges include site-specific geological risks,sealing system durability under cyclic loading,equipment integration,field-scale validation,standardization gaps,and cost-efficiency optimization.These innovations will establish best practices for building large-scale,high-efficiency CAES plants with ultra-long duration and grid resilience,accelerating the transition to carbon-neutral power systems.
