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886357 Foundation engineering problems at the construction of the new Zeebrugge Harbour (In German)
305A 886353 Hrauneyjafoss hydroelectric project - a study of groundwater monitoring as related to probable leakage under the dam and in the downstream area
Palmason, P R Proc Ninth European Conference on Soil Mechaaics and Foundation Engineering, Groundwater E&cts in Geotechaicai Engineering, Dublin, 31 Aug3 Sept 1987 Vl, P479-483. Pub1 Rotterdam: A A Balkema, 1987 The power plant in Iceland was founded on pervious post glacial lavaflows. Reduction of permeability adjacent to the dam was considered essential, with remedial measures after initial filling planned together with pre-construction grouting. 37 sensors were installed in the reservoir bottom, and numerous wells drilled downstream to monitor the flow. Results showed gradually decreasing water flow, partly due to natural sealing by transported sediments, partly due to remedial measures,now at about 1 cu m/s.
Hydraulic structures 886357 Foundation engineering problems at the construction of the new Zeebrugge Harbour (In German)
van Impe, W F Geotechnik VII, Nl, 1988, PI-10 Two breakwaters were constructed where soft sediments I&n deep had been partially replaced by sand fill. Density of fill was checked using CPTs and densification by blasting or vibroflotation used where necessary. Results of the two techniques are compared. Stability analysis of the breakwaters included parametric examination of the variance of the strength of fill and sediment, and the effects of wave pressure on pore pressures beneath the structures. The latter factor had significant influence on safety factors. 886358 Non stationary flow under revetments using the finite element method
886354 Analysis of the foundations of Crestuma and Coimbra Dams Seco E Pinto, P S; Maranha das Neves, E
Proc Ninth European Conference on Soil Mechanics and Foundation Engineering, Groundwater E&cts in Geotechnical Engineering, Dubfin, 31 Aug-3 Sept 1987 VI, P485-490. Pub1 Rotterdam: A A Balkema. 1987 Instrumentation installed to monitor water flow for two dam foundations of 35m thick, high permeability alluvial materials are described. The dam structures, geology, and installation are briefly reported. The seepage recorded is discussed with reference to foundation stability, dam design, and pre-construction calculations.
Hjortnaes-Pedersen, A G I; Bezuijen, A; Best, H Proc Ninth European Conference on Soil Mechanics and Foundation Engineering, Groaadwater Eficts in Geotechaical Engineering, Dublin, 31 Aug-3 Sept 1987 VI, P435-438. Pub1 Rotterdam: A A Balkema, 1987 A program to investigate induced pore pressure response in a revetment caused by wave attack is described. A two dimensional finite element computer program was developed to calculate pore pressure response in the filter of a placed block revetment. The theory of flow in porous media is outlined and development of the STEENZET/2 program described. Predicted pore pressures are in good agreement with those measured on large model revetments.
886355 Internal seepage erosion in old embankment dams
Tedd, P; Charles, J A; Boden, J B Proc Ninth Enropean Conference on Soil Mechanics and Founaixtion Engineering, Groundwater Efsccts in Geotechnical Engineering, Dublin, 31 Aug-3 Sept 1987 VI, P507-510. Pub1 Rotterdam: A A Balkema, 1987 Internal erosion due to seepage is a potential failure mechanism of old puddle clay core dams. Horizontal earth pressure measurements made in a number of old dam cores identified areas of relatively low stress, susceptible to hydraulic fracture which could initiate erosion. The use of infra red thermography to identify seepage patches downstream of the dam is considered. 886356 Prediction and measurement of pore water pressuresin highly stressedsoft soils beneath a trial embankment
Widdis, T F Proc Ninth European Conference on Soil Mechanics and Foundation Engineeriag, Groundwater Effects in Geotechnical Engineering, Dub&, 31 Aug-3 Sept 1987 VI, P527-530. Pub1 Rotterdam: A A Balkema, 1987 Pore pressure parameters may be used to predict pressures beneath an embankment on soft clay foundations for use in effective stress analysis. Calculated values were compared with field measurements taken during construction to failure of an embankment on soft soil foundations at Athlone, Ireland. At high shear stress levels, measured pressures were much greater than those calculated using laboratory values gf pore pressure parameters and increments of principal stress determined by elastic theory.
Slopes See also: 886021, 886033, 886082, 886234, 886235 886359 Role of shale undercutting in promoting rock falls and wedge failures along Illterstate 77
Shakoor, A; Weber, M W Bull Assoc Engng Geol V25, N2, May 1988, P219-234 The predominant forms of failure along Interstate 77 are rock falls and wedge failures. A detailed investigation of 9 sites along the highway, 3 of which are described, was undertaken. Line surveys were used to analyse discontinuity spacing and orientation, whilst laboratory testing determined slake durability index, specific gravity and base friction angle. Stereographic projection was used to analyse the joint orientation data. The study indicates that shale undercutting and jointing of limestone and sandstone promote rock failure, and that many falls are ‘wedge falls’, combined wedge failure and rock falls. Remedial measures such as removal of overhangs, shotcreting of shale slopes and installing rock bolts and anchors are briefly discussed.
Remedial measures for debris flows in British Columbia: tee&i4 note Martin, D C Bug Assoc Eagag Geol V25. N2, May 1988, P265-268
Debris flows, the rapid downslope movement of water saturated soil and debris, are a hazard in British Columbia. Potential hazard may be identified, but timing cannot be accurately
0 1988 Pergamon Press plc. Reproduction
not permitted
Palmason, P R Proc Ninth European Conference on Soil Mechaaics and Foundation Engineering, Groundwater E&cts in Geotechaicai Engineering, Dublin, 31 Aug3 Sept 1987 Vl, P479-483. Pub1 Rotterdam: A A Balkema, 1987 The power plant in Iceland was founded on pervious post glacial lavaflows. Reduction of permeability adjacent to the dam was considered essential, with remedial measures after initial filling planned together with pre-construction grouting. 37 sensors were installed in the reservoir bottom, and numerous wells drilled downstream to monitor the flow. Results showed gradually decreasing water flow, partly due to natural sealing by transported sediments, partly due to remedial measures,now at about 1 cu m/s.
Hydraulic structures 886357 Foundation engineering problems at the construction of the new Zeebrugge Harbour (In German)
van Impe, W F Geotechnik VII, Nl, 1988, PI-10 Two breakwaters were constructed where soft sediments I&n deep had been partially replaced by sand fill. Density of fill was checked using CPTs and densification by blasting or vibroflotation used where necessary. Results of the two techniques are compared. Stability analysis of the breakwaters included parametric examination of the variance of the strength of fill and sediment, and the effects of wave pressure on pore pressures beneath the structures. The latter factor had significant influence on safety factors. 886358 Non stationary flow under revetments using the finite element method
886354 Analysis of the foundations of Crestuma and Coimbra Dams Seco E Pinto, P S; Maranha das Neves, E
Proc Ninth European Conference on Soil Mechanics and Foundation Engineering, Groundwater E&cts in Geotechnical Engineering, Dubfin, 31 Aug-3 Sept 1987 VI, P485-490. Pub1 Rotterdam: A A Balkema. 1987 Instrumentation installed to monitor water flow for two dam foundations of 35m thick, high permeability alluvial materials are described. The dam structures, geology, and installation are briefly reported. The seepage recorded is discussed with reference to foundation stability, dam design, and pre-construction calculations.
Hjortnaes-Pedersen, A G I; Bezuijen, A; Best, H Proc Ninth European Conference on Soil Mechanics and Foundation Engineering, Groaadwater Eficts in Geotechaical Engineering, Dublin, 31 Aug-3 Sept 1987 VI, P435-438. Pub1 Rotterdam: A A Balkema, 1987 A program to investigate induced pore pressure response in a revetment caused by wave attack is described. A two dimensional finite element computer program was developed to calculate pore pressure response in the filter of a placed block revetment. The theory of flow in porous media is outlined and development of the STEENZET/2 program described. Predicted pore pressures are in good agreement with those measured on large model revetments.
886355 Internal seepage erosion in old embankment dams
Tedd, P; Charles, J A; Boden, J B Proc Ninth Enropean Conference on Soil Mechanics and Founaixtion Engineering, Groundwater Efsccts in Geotechnical Engineering, Dublin, 31 Aug-3 Sept 1987 VI, P507-510. Pub1 Rotterdam: A A Balkema, 1987 Internal erosion due to seepage is a potential failure mechanism of old puddle clay core dams. Horizontal earth pressure measurements made in a number of old dam cores identified areas of relatively low stress, susceptible to hydraulic fracture which could initiate erosion. The use of infra red thermography to identify seepage patches downstream of the dam is considered. 886356 Prediction and measurement of pore water pressuresin highly stressedsoft soils beneath a trial embankment
Widdis, T F Proc Ninth European Conference on Soil Mechanics and Foundation Engineeriag, Groundwater Effects in Geotechnical Engineering, Dub&, 31 Aug-3 Sept 1987 VI, P527-530. Pub1 Rotterdam: A A Balkema, 1987 Pore pressure parameters may be used to predict pressures beneath an embankment on soft clay foundations for use in effective stress analysis. Calculated values were compared with field measurements taken during construction to failure of an embankment on soft soil foundations at Athlone, Ireland. At high shear stress levels, measured pressures were much greater than those calculated using laboratory values gf pore pressure parameters and increments of principal stress determined by elastic theory.
Slopes See also: 886021, 886033, 886082, 886234, 886235 886359 Role of shale undercutting in promoting rock falls and wedge failures along Illterstate 77
Shakoor, A; Weber, M W Bull Assoc Engng Geol V25, N2, May 1988, P219-234 The predominant forms of failure along Interstate 77 are rock falls and wedge failures. A detailed investigation of 9 sites along the highway, 3 of which are described, was undertaken. Line surveys were used to analyse discontinuity spacing and orientation, whilst laboratory testing determined slake durability index, specific gravity and base friction angle. Stereographic projection was used to analyse the joint orientation data. The study indicates that shale undercutting and jointing of limestone and sandstone promote rock failure, and that many falls are ‘wedge falls’, combined wedge failure and rock falls. Remedial measures such as removal of overhangs, shotcreting of shale slopes and installing rock bolts and anchors are briefly discussed.
Remedial measures for debris flows in British Columbia: tee&i4 note Martin, D C Bug Assoc Eagag Geol V25. N2, May 1988, P265-268
Debris flows, the rapid downslope movement of water saturated soil and debris, are a hazard in British Columbia. Potential hazard may be identified, but timing cannot be accurately
0 1988 Pergamon Press plc. Reproduction
not permitted