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Design model for petroleum storage in a rock salt dome
398A which can handle pillar nonlinearity, pillar interaction, and possible instabilities. Case study examples illustrate the principles described.
926455 Construction of large underground caverns for the storage of crude oil in ductile rocks o f Miocene volcanism
Hoshino, K; Makita, T 926452 Ground control in multi-seam mining
Haycocks, C
Proc 22nd Annual Institute on Coal Mining Health, Safety and Research, Biacksburg, 26-28 August 1991 P123-131. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991 Interaction between seams in multiseam mining has caused problems in many pits and is inhibiting the development of new seams. Geological conditions affecting occurrence and degree of interaction are fixed, but time between mining different seams and mining method may be controlled. Interaction probability is discussed considering extraction-related variables. Undermining and overmining are considered and interactive probability and remedial measures examined. The cases of simultaneous mining and ultra-close seam mining are investigated. Basic mechanisms controlling interaction are summarised and ground control measures discussed.
926453 Stress-induced stability problems - a coal mine case study
Maleki, H N; Weaver, A; Acre, R
Rock Mechanics as a Multidiscip~nary Science, Proc 32nd US Symposium, Norman, 10-12 July 1991 P1057-1064. Publ Rotterdam. A A Balkema, 1991 Overcoring stress measurements, underground observations, and convergence monitoring data for a southern Colorado coal mine are described. The field information and laboratory strength data were used in finite element modelling of the mine to optimise layout and improve ground control. Major stability problems were seen to arise from variability of rock strength due to the depositional environment and development of a finely laminated rock mass, in situ horizontal stress exceeding bedding plane strength, and time dependent failure of floor rocks.
Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 V4, P2587-2592. Publ Rotterdam: A A Balkema, 1990 Underground strategic oil storages have been constructed in Japan. One site (Kushikino) was selected in Tertiary volcanic rocks. Site characterisation included geophysical and hydrological studies backed by laboratory rock mechanics testing. Autobrecciated pyroclastics and volcanic conglomerate were chosen for the cavern locations, andesitic lava flows were rejected. Construction commenced in 1986. Main geological features encountered were almost as predicted. Mechanical stability has been excellent, except in narrow zones close to some faults. Features of Miocene submarine eruption have been revealed. 926456 Underground storage in a shale: characterization of intact and excavated rock (In French)
Ballivy, G; Benmokrane, B; Colin, J C; Poulin, R; Simard, R
Proc 6th International Congress International Association o f Engineering Geology, Amsterdam, 6-10 August 1990 V4, P2717-2726. Publ Rotterdam." A A Balkema, 1990 Investigations for underground liquid natural gas storage caverns in Ordovician shale and limestone formations in Quebec are described. Physical, hydraulic, and mechanical properties were measured in situ. Compatibility with propane was investigated. Excavated rocks were examined to assess their suitability as engineering fill, compaction, swelling, slake durability, and triaxial compression tests being carried out. 926457 Design model for petroleum storage in a rock salt dome
Salami, M R Rock Mechanics as a Maltidisciplinary Science, Proc 32nd US Symposium, Norman, 10-12 July 1991 P1073-I082. Pub/ Rotterdam: A A Balkema, 1991
See also: 926501
A study of long term stability of existing storage caverns in a rock salt dome is presented. The most critical areas are identified on the basis of geometry, material properties, in situ stresses, and operational cavern pressures, and safety in these areas evaluated using the Rheological Finite Element Model (RFEM). Model construction and geometrical calibration and results of horizontal and vertical analyses for the three- and eleven-cavern systems over periods of up to 30 years are illustrated.
926454
Radioactive waste disposal
Water curtain - a successful means of preventing gas leakage from high-pressure unlined rock caverns
See also: 926093, 926094, 926196
General underground storage
Kjorholt, H; Broch, E Tunnlg Underground Space Technol VT, N2, April 1992, P127-132 Air cushion surge chambers characterised by pressures up to 7.7MPa and volumes in excess of 100,000 cubic m have been built for Norwegian hydroplants. Leakage can be prevented by permeability control (although this has not been applied at full scale) or by installing a water curtain such that groundwater pressure along potential leakage paths is greater than storage pressure over at least a small distance. This allows storage at relatively low overburden cover. Design, operating experience, and potential long term problems are discussed with reference to three surge chambers.
926458 Similarity solution for two-phase water, air and heat flow near a linear heat source in a porous medium
Doughty, C; Pruess, K J Geophys Res 1/97, NB2, Feb 1992, P1821-1838 A semianalytical solution, using a similarity variable, is presented for transient 2-phase water, heat, and air flow in a porous medium surrounding a constant strength linear heat source. It can be used to simulate the thermohydrological response of heat generating radioactive waste repositories. Improvements over previous solutions include incorporation of an air component, effective continuum representation of
,~', 1992 Pergamon Press Ltd. Reproduction not permitted
926455 Construction of large underground caverns for the storage of crude oil in ductile rocks o f Miocene volcanism
Hoshino, K; Makita, T 926452 Ground control in multi-seam mining
Haycocks, C
Proc 22nd Annual Institute on Coal Mining Health, Safety and Research, Biacksburg, 26-28 August 1991 P123-131. Publ Blacksburg: Virginia Polytechnic Institute and State University, 1991 Interaction between seams in multiseam mining has caused problems in many pits and is inhibiting the development of new seams. Geological conditions affecting occurrence and degree of interaction are fixed, but time between mining different seams and mining method may be controlled. Interaction probability is discussed considering extraction-related variables. Undermining and overmining are considered and interactive probability and remedial measures examined. The cases of simultaneous mining and ultra-close seam mining are investigated. Basic mechanisms controlling interaction are summarised and ground control measures discussed.
926453 Stress-induced stability problems - a coal mine case study
Maleki, H N; Weaver, A; Acre, R
Rock Mechanics as a Multidiscip~nary Science, Proc 32nd US Symposium, Norman, 10-12 July 1991 P1057-1064. Publ Rotterdam. A A Balkema, 1991 Overcoring stress measurements, underground observations, and convergence monitoring data for a southern Colorado coal mine are described. The field information and laboratory strength data were used in finite element modelling of the mine to optimise layout and improve ground control. Major stability problems were seen to arise from variability of rock strength due to the depositional environment and development of a finely laminated rock mass, in situ horizontal stress exceeding bedding plane strength, and time dependent failure of floor rocks.
Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 V4, P2587-2592. Publ Rotterdam: A A Balkema, 1990 Underground strategic oil storages have been constructed in Japan. One site (Kushikino) was selected in Tertiary volcanic rocks. Site characterisation included geophysical and hydrological studies backed by laboratory rock mechanics testing. Autobrecciated pyroclastics and volcanic conglomerate were chosen for the cavern locations, andesitic lava flows were rejected. Construction commenced in 1986. Main geological features encountered were almost as predicted. Mechanical stability has been excellent, except in narrow zones close to some faults. Features of Miocene submarine eruption have been revealed. 926456 Underground storage in a shale: characterization of intact and excavated rock (In French)
Ballivy, G; Benmokrane, B; Colin, J C; Poulin, R; Simard, R
Proc 6th International Congress International Association o f Engineering Geology, Amsterdam, 6-10 August 1990 V4, P2717-2726. Publ Rotterdam." A A Balkema, 1990 Investigations for underground liquid natural gas storage caverns in Ordovician shale and limestone formations in Quebec are described. Physical, hydraulic, and mechanical properties were measured in situ. Compatibility with propane was investigated. Excavated rocks were examined to assess their suitability as engineering fill, compaction, swelling, slake durability, and triaxial compression tests being carried out. 926457 Design model for petroleum storage in a rock salt dome
Salami, M R Rock Mechanics as a Maltidisciplinary Science, Proc 32nd US Symposium, Norman, 10-12 July 1991 P1073-I082. Pub/ Rotterdam: A A Balkema, 1991
See also: 926501
A study of long term stability of existing storage caverns in a rock salt dome is presented. The most critical areas are identified on the basis of geometry, material properties, in situ stresses, and operational cavern pressures, and safety in these areas evaluated using the Rheological Finite Element Model (RFEM). Model construction and geometrical calibration and results of horizontal and vertical analyses for the three- and eleven-cavern systems over periods of up to 30 years are illustrated.
926454
Radioactive waste disposal
Water curtain - a successful means of preventing gas leakage from high-pressure unlined rock caverns
See also: 926093, 926094, 926196
General underground storage
Kjorholt, H; Broch, E Tunnlg Underground Space Technol VT, N2, April 1992, P127-132 Air cushion surge chambers characterised by pressures up to 7.7MPa and volumes in excess of 100,000 cubic m have been built for Norwegian hydroplants. Leakage can be prevented by permeability control (although this has not been applied at full scale) or by installing a water curtain such that groundwater pressure along potential leakage paths is greater than storage pressure over at least a small distance. This allows storage at relatively low overburden cover. Design, operating experience, and potential long term problems are discussed with reference to three surge chambers.
926458 Similarity solution for two-phase water, air and heat flow near a linear heat source in a porous medium
Doughty, C; Pruess, K J Geophys Res 1/97, NB2, Feb 1992, P1821-1838 A semianalytical solution, using a similarity variable, is presented for transient 2-phase water, heat, and air flow in a porous medium surrounding a constant strength linear heat source. It can be used to simulate the thermohydrological response of heat generating radioactive waste repositories. Improvements over previous solutions include incorporation of an air component, effective continuum representation of
,~', 1992 Pergamon Press Ltd. Reproduction not permitted