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Geoscience investigations of two North Atlantic abyssal planes - the ESOPE international expedition. A review
295A 915234 Rock cbaracterisation - eid to efficient ble!sting Sandhu, M S; Pradhan, G K J Min MetaZ FueZs V38. N9, Sept 1990. P241-246 The most important rock parameters, from the practical engineering viewpoint, are structural nature of the rock mass, joint plane spacing and orientation, and specific gravity and hardness. Borehole and core logging are applicable but expensive. Characterisation of the rock from production drilling records is possible using a strata logging device which gives a continuous readout of hardness from data monitored from the drilling machine itself. The logger, its output, applications, and limitiations are illustrated and discussed.
915235 Measurement of induced fractures by downhole TV cameras in Black Warrior Basin coalbeds Palmer, I D; Sparks, D P J Pet T&no1 V43, NJ, March 1991, P270-275, 326-328 Fracture stimulation is widely used in coal degasification in the Black Warrior Basin, Alabama. Injection tests, static line pressure tests, and downhole television cameras have been used to provide information in order to understand the fracture process better. High resolution colour cameras of OD 84mm and 57mm were used to observe fractures during injection tests and after propped fracture treatment. Results are compared to predictions of hydraulic fracture simulators.
915238 Penetration tests in lique-iiablegravels Andrus, R D; Youd, T L Proc 12th ZnternationaZConference on Soil Mechanics and Foundation Engineering, Rio dc Janeiro, 13-18 August 1989 VI, P679-682. Pub1 Rotterdam: A A Balkema, 1989 Cone penetration and standard penetration tests were carried out beneath two liquefaction induced lateral spreads resulting from the 1983 Borah Peak, Idaho, earthquake. These results and borehole logs revealed the sites were underlain by gravelly deposits with fines contents of l-5% and 1530% respectively. Ratios of average CPT resistance to STP penetration resistance against mean grain diameter extend the published correlation for sands. Liquefaction susceptibilities calculated using a simplified procedure and without correction for gravel content are in good agreement with observed behaviour. 915239 Relationship between the unload shear modullls from pressuremeter tests and the maximum sbeu modulus for send Byrne, P M; Salgado, F M; Howie, J A Proc 3rd International Symposium on Pressuremeters, Oxford, 2-6 April 1990 P231-241. Pub1 London: Thomas Tevord, 1990 One of the soil parameters that can be derived using the selfboring pressuremeter is equivalent elastic unload shear modulus, obtained from the slope of the unload-reload pressuremeter loop. However, this is not equal to the maximum shear modulus. A method of analysis to predict the in situ maximum shear modulus from self-boring pressuremeter unload tests is presented. Comparison of the analysis procedure with laboratory and field data is also reviewed.
915236 Geoscience investigations of two North Atlantic abyssal planes - the ESOPE international expedition. A review Buckley, D E Radioact Waste Manage VIS. N2/3. 1991, PIZI-131
915240 Calibration chamber tests of the cone pressuremeter in sand Schnaid, F; Houlsby, G T Proc 3rd Znternational Symposium on Pressuremeters, Oxford, 2-6 April 1990 P263-272. Pub1 London: Thomas Telford. 1990
The ESOPE (Etude des Sediments Oceaniques par Penetration) expedition was planned to assess the feasibility of the Great Meteor East area of the Madeira Abyssal Plain and of the South Nares Abyssal Plain for the disposal of high level radioactive waste. The longest ever continuous sediment cores (34.7m) obtained from an oceanographic ship were recovered using a piston corer and examined on board and in laboratories of 8 participating countries. Information on deposition and chemical diagensis over the past 1 million years was obtained. New evidence of compaction faults in unconsolidated sediments was revealed.
Cone pressuremeter test interpretation is very complex since the test is carried out in soil which has been displaced by the penetration of the cone. Although analyses of tests in clay have been developed and successfully applied, nothing has been developed for analysis of tests in sand. Consequently, tests in sand were conducted in a calibration chamber. The results from these tests and the procedure used to calculate the in situ horizontal stress and density from using the cone pressuremeter are presented.
915237 E&t of pertial drahutge on pressuremeter test in clay Fukugawa, R, Fahey, M; Ohta, H SoiZs Found V30, N4, Dee 1990, P136-146 The finite element code DACSAR, using an elastoplastic constitutive model,was employed to model stress strain behaviour of clay around a pressuremeter. Miniature pressuremeter tests in a triaxial chamber were used to check the DACSAR results. These tests are influenced by the finite outer boundary of the chamber and by the conditions of partial drainage, and consequently the stress strain curves are not identical to those in the in situ, perfectly undrained state. These effects are evaluated and discussed. 0
915241 Application of spectrometric coal iithology logging in brown coal mining Ceravolo, C; Charbucinski, J; Huppert, P; Smith, Z Proc 2nd Conference on Large Open At Mining, Latrohe VoUey, 3-6 April 1989 P45-49. Pub1 Melbourne: AusIiUM, 1989 Research to investigate coal lithology in order to delineate the coal, clay, and sand strata, the major components in coal deposits, is described. Also, a borehole logging system to be used in conjunction with coal proving and aquifer monitoring activities was investigated. The nuclear spectrometric techniques that differentiate between gamma rays generated in neutron inelastic, radioactive capture, and neutron activation reactions were developed and tested. Description of these techniques and the computer based on-line data analysis and interpretation are presented.
1991 Pergamon Press plc. Reproduction
not permitted
915235 Measurement of induced fractures by downhole TV cameras in Black Warrior Basin coalbeds Palmer, I D; Sparks, D P J Pet T&no1 V43, NJ, March 1991, P270-275, 326-328 Fracture stimulation is widely used in coal degasification in the Black Warrior Basin, Alabama. Injection tests, static line pressure tests, and downhole television cameras have been used to provide information in order to understand the fracture process better. High resolution colour cameras of OD 84mm and 57mm were used to observe fractures during injection tests and after propped fracture treatment. Results are compared to predictions of hydraulic fracture simulators.
915238 Penetration tests in lique-iiablegravels Andrus, R D; Youd, T L Proc 12th ZnternationaZConference on Soil Mechanics and Foundation Engineering, Rio dc Janeiro, 13-18 August 1989 VI, P679-682. Pub1 Rotterdam: A A Balkema, 1989 Cone penetration and standard penetration tests were carried out beneath two liquefaction induced lateral spreads resulting from the 1983 Borah Peak, Idaho, earthquake. These results and borehole logs revealed the sites were underlain by gravelly deposits with fines contents of l-5% and 1530% respectively. Ratios of average CPT resistance to STP penetration resistance against mean grain diameter extend the published correlation for sands. Liquefaction susceptibilities calculated using a simplified procedure and without correction for gravel content are in good agreement with observed behaviour. 915239 Relationship between the unload shear modullls from pressuremeter tests and the maximum sbeu modulus for send Byrne, P M; Salgado, F M; Howie, J A Proc 3rd International Symposium on Pressuremeters, Oxford, 2-6 April 1990 P231-241. Pub1 London: Thomas Tevord, 1990 One of the soil parameters that can be derived using the selfboring pressuremeter is equivalent elastic unload shear modulus, obtained from the slope of the unload-reload pressuremeter loop. However, this is not equal to the maximum shear modulus. A method of analysis to predict the in situ maximum shear modulus from self-boring pressuremeter unload tests is presented. Comparison of the analysis procedure with laboratory and field data is also reviewed.
915236 Geoscience investigations of two North Atlantic abyssal planes - the ESOPE international expedition. A review Buckley, D E Radioact Waste Manage VIS. N2/3. 1991, PIZI-131
915240 Calibration chamber tests of the cone pressuremeter in sand Schnaid, F; Houlsby, G T Proc 3rd Znternational Symposium on Pressuremeters, Oxford, 2-6 April 1990 P263-272. Pub1 London: Thomas Telford. 1990
The ESOPE (Etude des Sediments Oceaniques par Penetration) expedition was planned to assess the feasibility of the Great Meteor East area of the Madeira Abyssal Plain and of the South Nares Abyssal Plain for the disposal of high level radioactive waste. The longest ever continuous sediment cores (34.7m) obtained from an oceanographic ship were recovered using a piston corer and examined on board and in laboratories of 8 participating countries. Information on deposition and chemical diagensis over the past 1 million years was obtained. New evidence of compaction faults in unconsolidated sediments was revealed.
Cone pressuremeter test interpretation is very complex since the test is carried out in soil which has been displaced by the penetration of the cone. Although analyses of tests in clay have been developed and successfully applied, nothing has been developed for analysis of tests in sand. Consequently, tests in sand were conducted in a calibration chamber. The results from these tests and the procedure used to calculate the in situ horizontal stress and density from using the cone pressuremeter are presented.
915237 E&t of pertial drahutge on pressuremeter test in clay Fukugawa, R, Fahey, M; Ohta, H SoiZs Found V30, N4, Dee 1990, P136-146 The finite element code DACSAR, using an elastoplastic constitutive model,was employed to model stress strain behaviour of clay around a pressuremeter. Miniature pressuremeter tests in a triaxial chamber were used to check the DACSAR results. These tests are influenced by the finite outer boundary of the chamber and by the conditions of partial drainage, and consequently the stress strain curves are not identical to those in the in situ, perfectly undrained state. These effects are evaluated and discussed. 0
915241 Application of spectrometric coal iithology logging in brown coal mining Ceravolo, C; Charbucinski, J; Huppert, P; Smith, Z Proc 2nd Conference on Large Open At Mining, Latrohe VoUey, 3-6 April 1989 P45-49. Pub1 Melbourne: AusIiUM, 1989 Research to investigate coal lithology in order to delineate the coal, clay, and sand strata, the major components in coal deposits, is described. Also, a borehole logging system to be used in conjunction with coal proving and aquifer monitoring activities was investigated. The nuclear spectrometric techniques that differentiate between gamma rays generated in neutron inelastic, radioactive capture, and neutron activation reactions were developed and tested. Description of these techniques and the computer based on-line data analysis and interpretation are presented.
1991 Pergamon Press plc. Reproduction
not permitted