A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Geotechnical Basis for Underground Energy Storage in Had Rock. Final Report
Underground pumped hydroelectric storage requires the excavation of caverns in hard rock. Hard rock caverns, also, are one option for compressed air storage. Preliminary design studies for both technologies at a specific site in Maryland were completed recently by EPRI, DOE, and the Potomac Electric Power Company. The present report deals with the geotechnical aspects of these storage systems from a generic viewpoint. Because both technologies are virtually new to the electric utility industry, information about effective use of hard rock openings, including tunnels and shafts, comes mainly from other types of underground projects. These are power houses for hydroelectric and conventional pumped storage schemes, as well as transportation facilities and mines. Rock strength, support, instrumentation, costs, management, and experimental work are among the items considered in the report. Mapping of geologic structures, rock fragmentation, and rock mass properties is also discussed. The general conclusions are that rock types favorable for underground energy storage are present at suitable depths in many areas and that they can be identified by adequate geotechnical exploration prior to detailed design. Review of the documentary evidence in rock mechanics and related fields indicates that construction can meet reasonable time and cost schedules and that operation of the underground openings should be on a maintenance-free, near-permanent basis. (ERA citation 07:043745)
Geotechnical Basis for Underground Energy Storage in Had Rock. Final Report
Underground pumped hydroelectric storage requires the excavation of caverns in hard rock. Hard rock caverns, also, are one option for compressed air storage. Preliminary design studies for both technologies at a specific site in Maryland were completed recently by EPRI, DOE, and the Potomac Electric Power Company. The present report deals with the geotechnical aspects of these storage systems from a generic viewpoint. Because both technologies are virtually new to the electric utility industry, information about effective use of hard rock openings, including tunnels and shafts, comes mainly from other types of underground projects. These are power houses for hydroelectric and conventional pumped storage schemes, as well as transportation facilities and mines. Rock strength, support, instrumentation, costs, management, and experimental work are among the items considered in the report. Mapping of geologic structures, rock fragmentation, and rock mass properties is also discussed. The general conclusions are that rock types favorable for underground energy storage are present at suitable depths in many areas and that they can be identified by adequate geotechnical exploration prior to detailed design. Review of the documentary evidence in rock mechanics and related fields indicates that construction can meet reasonable time and cost schedules and that operation of the underground openings should be on a maintenance-free, near-permanent basis. (ERA citation 07:043745)
Geotechnical Basis for Underground Energy Storage in Had Rock. Final Report
O. C. Farquhar (author)
1982
409 pages
Report
No indication
English
Miscellaneous Energy Conversion & Storage , Compressed air storage power plants , Pumped storage power plants , Rock caverns , Design , Construction , Electric utilities , Off-peak energy storage , Geologic deposits , Underground storage , Cost , Excavation , Rock mechanics , Underground , Site selection , ERDA/250200 , ERDA/250300 , ERDA/422000
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