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Geotechnical, geological and selected radionuclide retention characteristics of the radioactive waste disposal site near the Farallon Islands
192A 90349 ! Back analysis of Dong Feng shaft deformation in Wu Long mine of Fuxin Liang Bing: Zhang Mengtao Proc International Symposium Tunnellingfor Water Resources and Power Projects, New Delhi, 19-23 January 1988 VI. P355-358. Publ New Delhi." OxJord and IBH Publishing Co. 1988
General concepts of back analysis are outlined and the technique applied to shaft deformation. The simple-shape method is used to back analyse parameters of the discontinuous mining area, and the derived parameters applied to calculation of shaft deformation and earth surface subsidence. Results are useful in mine planning.
Radioactive waste disposal 9O3492 Geotechnical, geological and selected radionuclide retention characteristics of the radioactive waste disposal site near the Farallon Islands Booth, J S; Winters, W J; Poppe. L J; Neiheisel, J: Dyer, R S Marine Geotechnol V8. N2, 1989. P I I 1-132 Sediments, chiefly sand and silt, ~vere recovered from depths of 500. 1000.and 1500m at a proposed low level waste disposal site. Textural. mineralogical, and geotechnical examinations were undertaken. All sediments were very soft and exhibited overconsolidated behaviour. Contemporary geological environment was considercd dcpositional. Sediments tended to be finer downslope. Simplified analysis suggests increased potential for radionuclide retardation downslope, because of increased content of smectite and illite, and greater predicted dynamic penetration of waste canisters. 903493 Exploratory shaft design for the salt repository project Poppen, S A G; Cooley, A I; Mirza. M B Proc 1987 Rapid Excavation and Tunnelling Conference, New Orleans, 14-17 June 1987 V2, P1072-1090. Publ Littleton. Socieo" qf Mining Engineers, 1987 Shafts for the proposed repository in Texas will be sunk through sediments and sedimentary rocks containing aquifers. Two 4m diameter shafts to depth around 800m are envisaged, sunk using ground freezing to stabilize unconsolidated and saturated form,'ttions. Basic design criteria, influence of gcotechnical conditions on the shaft lining, and shaft lining and seal design are discussed.
Underground construction methods 903494 .Measurement and monitoring in a tunnel excavated in detritus soil ground with thin overburden, behaviour of ground, and effect of supporting members - Tomari Tunnel of Hokuriku Expressway Kav,ata, T: Tanii, K Proc 2nd International Symposium on Field l~leasurements in Geomechanics, Kobe, 6-9 April 1987 V2, P833-842. Publ Rotterdam: ,4 A Balkema, 1988 A short, relatively shallow section of the tunnel runs through alluvial and diluvial clay soils. Problems foreseen were ground failure causing tunnel deformation, settlement due to low bearing capacity, face collapse aggravated by groundwater, and landslides. Construction methods included cut and cover using sheet piles, pilot tunnel and drifting, forepoling, and NATM as appropriate. Surface settlement, convergence, lining
stresses.and earth pressure v,ere monitored. The problems, remedial measures and field measurement execution are illustrated. 903495 Tunnelling by means of jacking small pipes Lo, M B Proc l~Tnth Southeast Asian Geotechnical Conference, Bangkok, 7-11 December 1987 V2, P8.25-8.34. Publ Bangkok. So,ttheast Asian Geotechnical Society, 1987 Construction of a pedestrian underpass in Singapore through saturated peat and organic clay is described. Minimum disturbance to traffic and adjacent structures by construction works or ground movement was essential. Cut and cover tunnelling with ground freezing or compressed air, or jacking were considered. A framework of small diameter pipes was jacked between pits to form a cofferdam defining the section of the underpass. The inside of the steel pipe jacket was excavated and steel frames erected to carry the surface load. Finally, an in situ concrete tunnel was constructed and the frames removed. Seepage was minimised by chemical grouting. 903496 Tunnelling under compressed air in granular soils - research, design and site experience Fuchsberger, M; Strobl, B; Ayaydin, N; Heinrich, R Proc International Congress on Tunnels and Water, Madrid, 15-18 June 1988 VI, P137-143. Publ Rotter&~m: A A Balkema. 1988
Experiences related to the construction of the Vienna metro in fully and partially saturated sands and gravel are described. Finite element calculation to assess risk of uplift of the grouted gravel slab of a river bottom is presented. Laboratory investigations into parameters affecting the air and water permeability of soils are described. Based on these results, the pressure around the tunnel is predicted and compared to site experiences.
Groundwater problems 903497 Water - a hazard and a nuisance Moebs, N M; Sames, G P Coal V26. NS, Oct 1989, P60-63 Sudden water inrushes without precursory seepage through coal barriers cannot be predicted easily and there is no suitable method available to specify barrier widths. Geophysical exploration methods may help solve this problem in the future. A case of flooding of a West Virginia mine is described. Core drilling was used to assess the causes of inflow and barrier integrity before further development. Precautions to be taken and danger signals requiring immediate response are discussed. 903498 Study on the permeability change of rock mass due to underground excavation Motojima, I Proc 2nd International Symposium on Field Measurements in Geomechanics, Kobe, 6-9 April 1987 V2, P645-655. Publ Rotterdam: A A Balkema. 1988
Permeability measurements in boreholes were made throughout the excavation periods of underground power station caverns, in order to study the effects of the construction process on cavern hydrology. The relation between permeability and crack apertures has been evaluated. The loosened zone
C 1990 Pergamon Press pie. Reproduction not permitted
General concepts of back analysis are outlined and the technique applied to shaft deformation. The simple-shape method is used to back analyse parameters of the discontinuous mining area, and the derived parameters applied to calculation of shaft deformation and earth surface subsidence. Results are useful in mine planning.
Radioactive waste disposal 9O3492 Geotechnical, geological and selected radionuclide retention characteristics of the radioactive waste disposal site near the Farallon Islands Booth, J S; Winters, W J; Poppe. L J; Neiheisel, J: Dyer, R S Marine Geotechnol V8. N2, 1989. P I I 1-132 Sediments, chiefly sand and silt, ~vere recovered from depths of 500. 1000.and 1500m at a proposed low level waste disposal site. Textural. mineralogical, and geotechnical examinations were undertaken. All sediments were very soft and exhibited overconsolidated behaviour. Contemporary geological environment was considercd dcpositional. Sediments tended to be finer downslope. Simplified analysis suggests increased potential for radionuclide retardation downslope, because of increased content of smectite and illite, and greater predicted dynamic penetration of waste canisters. 903493 Exploratory shaft design for the salt repository project Poppen, S A G; Cooley, A I; Mirza. M B Proc 1987 Rapid Excavation and Tunnelling Conference, New Orleans, 14-17 June 1987 V2, P1072-1090. Publ Littleton. Socieo" qf Mining Engineers, 1987 Shafts for the proposed repository in Texas will be sunk through sediments and sedimentary rocks containing aquifers. Two 4m diameter shafts to depth around 800m are envisaged, sunk using ground freezing to stabilize unconsolidated and saturated form,'ttions. Basic design criteria, influence of gcotechnical conditions on the shaft lining, and shaft lining and seal design are discussed.
Underground construction methods 903494 .Measurement and monitoring in a tunnel excavated in detritus soil ground with thin overburden, behaviour of ground, and effect of supporting members - Tomari Tunnel of Hokuriku Expressway Kav,ata, T: Tanii, K Proc 2nd International Symposium on Field l~leasurements in Geomechanics, Kobe, 6-9 April 1987 V2, P833-842. Publ Rotterdam: ,4 A Balkema, 1988 A short, relatively shallow section of the tunnel runs through alluvial and diluvial clay soils. Problems foreseen were ground failure causing tunnel deformation, settlement due to low bearing capacity, face collapse aggravated by groundwater, and landslides. Construction methods included cut and cover using sheet piles, pilot tunnel and drifting, forepoling, and NATM as appropriate. Surface settlement, convergence, lining
stresses.and earth pressure v,ere monitored. The problems, remedial measures and field measurement execution are illustrated. 903495 Tunnelling by means of jacking small pipes Lo, M B Proc l~Tnth Southeast Asian Geotechnical Conference, Bangkok, 7-11 December 1987 V2, P8.25-8.34. Publ Bangkok. So,ttheast Asian Geotechnical Society, 1987 Construction of a pedestrian underpass in Singapore through saturated peat and organic clay is described. Minimum disturbance to traffic and adjacent structures by construction works or ground movement was essential. Cut and cover tunnelling with ground freezing or compressed air, or jacking were considered. A framework of small diameter pipes was jacked between pits to form a cofferdam defining the section of the underpass. The inside of the steel pipe jacket was excavated and steel frames erected to carry the surface load. Finally, an in situ concrete tunnel was constructed and the frames removed. Seepage was minimised by chemical grouting. 903496 Tunnelling under compressed air in granular soils - research, design and site experience Fuchsberger, M; Strobl, B; Ayaydin, N; Heinrich, R Proc International Congress on Tunnels and Water, Madrid, 15-18 June 1988 VI, P137-143. Publ Rotter&~m: A A Balkema. 1988
Experiences related to the construction of the Vienna metro in fully and partially saturated sands and gravel are described. Finite element calculation to assess risk of uplift of the grouted gravel slab of a river bottom is presented. Laboratory investigations into parameters affecting the air and water permeability of soils are described. Based on these results, the pressure around the tunnel is predicted and compared to site experiences.
Groundwater problems 903497 Water - a hazard and a nuisance Moebs, N M; Sames, G P Coal V26. NS, Oct 1989, P60-63 Sudden water inrushes without precursory seepage through coal barriers cannot be predicted easily and there is no suitable method available to specify barrier widths. Geophysical exploration methods may help solve this problem in the future. A case of flooding of a West Virginia mine is described. Core drilling was used to assess the causes of inflow and barrier integrity before further development. Precautions to be taken and danger signals requiring immediate response are discussed. 903498 Study on the permeability change of rock mass due to underground excavation Motojima, I Proc 2nd International Symposium on Field Measurements in Geomechanics, Kobe, 6-9 April 1987 V2, P645-655. Publ Rotterdam: A A Balkema. 1988
Permeability measurements in boreholes were made throughout the excavation periods of underground power station caverns, in order to study the effects of the construction process on cavern hydrology. The relation between permeability and crack apertures has been evaluated. The loosened zone
C 1990 Pergamon Press pie. Reproduction not permitted