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Comparative study of indirect methods of landslip potential assessment
56A
931421 Finite element slope stability analysis by shear strength reduction technique Matsui, T; San, K C Soils Found V32, NI, March 1992, P59-70
931425 Investigations of landslides at St Catherine's Point, isle of Wight Hutchinson, J N; Bromhead, E N; Chandler, M P Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P169-179. Publ London: Thomas Telford, 1991
The shear strength reduction technique (Matsui and San, 1988) is based on the reduction of cohesion and friction angle until slope failure occurs, failure shear strain developing from the toe to the top of the slope. The background is described and the physical meaning of the critical shear strength reduction ratio with respect to total shear strain and shear strain increment is discussed. The method is verified for application within finite element slope analysis. Results are presented and compared to those of conventional methods for embankment slopes, excavated natural slopes, and a reinforced slope cutting.
Landslides at St Catherine's Point are amongst the most striking and best developed of the Undercliff region of the Isle of Wight. The geomorphology, Quaternary history, engineering geology, geotechnics, and current movement of the slide complex have been investigated. The main slide is essentially of a compound, non-circular type. Back analyses of the present slide complex have been carried out. A model for possible future development, based partly on examination of other parts of the Undercliff, is discussed.
931422 Slope stabilisation methods used on the Interstate Route H-3 project Boyce, G M; Abramson, L W Proc 28th Symposium on Engineering Geology and Geotechnical Engineering, Boise, 1-3 April 1992 P59-72. Publ Pocatello: Idaho State University, 1992
931426 Natural evolution of the soft rock cliff at Shanklin, Isle of Wight, and its planning and engineering implications Barton, M E Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P180-188. Publ London: Thomas Telford, 1991
The 17.2km highway project on the Island of Oahu, Hawaii, involves a series of cuts and fills in the fluted topography of the lush valleys along the alignment. The rock encountered is basalt in various stages of weathering. Geotextile-reinforced retaining walls, dowelled portal cuts, tiedback walls, concrete panel walls, and crib walls were amongst the slope stabilisation methods used. The applications for each of these methods are discussed, with reference to design, performance, and problems during construction.
The cliffs at Shanklin are formed of Cretaceous Lower Greensand and have been protected from marine erosion for over 100 years by backshore development. Slope degradation still occurs at a slow rate, with movements ranging from dislodgement of individual blocks to large masses and slides in the talus slope. Details of several major events are presented. Expected evolution of slope geometry is outlined and planning and engineering problems resulting are discussed. Outgrowth of the talus slope is the most immediate problem.
931423 Comparative study of indirect methods of landslip potential assessment Jennings, P J; Siddle, H J; Bentley, S P Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P143-148. Publ London: Thomas Telford, 1991 Indirect methods of landslip susceptibility zoning involve analysis of contributing factors and their locations. They use either empirical rules to produce an algorithm to predict hazard rating or statistical analysis of causal variables. Previously published methods are reviewed and their abilities compared for a study area in the Rhondda Valley. Discriminant and logistic (regression) techniques and the empirically derived landslide prediction algorithm are applied. Specific advantages of each approach are evaluated.
931424 Planning, phasing and implementation of rock slope remedial works in the Scottish Highlands Davies, T P; Hughes, D W Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P149-154. Publ London: Thomas Telford, 1991 Alternative transportation routes are not always available in areas such as the Scottish Highlands, and effective management of the transport system requires systematic hazard assessment and implementation of remedial measures. A typical slope configuration is illustrated and possible geological conditions and potential failure mechanisms described. Hazard classifi~tion and appr=isal procedures adopted are presented. Remedial options and their planning and implementation to minimisc disruption arc discussed.
931427 Recent history and geotechnics of landslides at Gore Cliff, Isle of Wight Bromhead, E N; Chandler, M P; Hutchinson, J N Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P189-196. Publ London." Thomas Telford, 1991 The last of a long series of major movements at Gore Cliff was in 1978. It has been shown to be the result of reactivation of earlier slides, with the basal slip surface controlled by bedding. The investigations into the geomorphology, history, engineering geology, and geotechnics of the slide are described. Residual strength of the slide materials was measured in ring shear tests and estimated by back analyses of the slide. A contribution to instability from water from domestic sources at the cliff top is indicated. Inferences for the general Undercliff area are examined.
931428 Modelling the dynamics of submarine slides (In French) Locat, J; Norem, H; Schieldrop, B
Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 V4, P2849-2855. Publ Rotterdam: A A Balkema, 1990 A two-dimensional viscoelastic model (Norem et al, 1989, 1990), originally developed to describe snow avalanches, has been modified for study of submarine slides. Front velocity and runout distance can be estimated and the shape of the moving mass described. The model has been applied to two case studies and although the results are not entirely satisfactory, it clearly distinguishes the debris flow and the turbidity current generated by the initial slide.
© 1993 Pergamon Press Ltd. Reproduction not permitted
931421 Finite element slope stability analysis by shear strength reduction technique Matsui, T; San, K C Soils Found V32, NI, March 1992, P59-70
931425 Investigations of landslides at St Catherine's Point, isle of Wight Hutchinson, J N; Bromhead, E N; Chandler, M P Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P169-179. Publ London: Thomas Telford, 1991
The shear strength reduction technique (Matsui and San, 1988) is based on the reduction of cohesion and friction angle until slope failure occurs, failure shear strain developing from the toe to the top of the slope. The background is described and the physical meaning of the critical shear strength reduction ratio with respect to total shear strain and shear strain increment is discussed. The method is verified for application within finite element slope analysis. Results are presented and compared to those of conventional methods for embankment slopes, excavated natural slopes, and a reinforced slope cutting.
Landslides at St Catherine's Point are amongst the most striking and best developed of the Undercliff region of the Isle of Wight. The geomorphology, Quaternary history, engineering geology, geotechnics, and current movement of the slide complex have been investigated. The main slide is essentially of a compound, non-circular type. Back analyses of the present slide complex have been carried out. A model for possible future development, based partly on examination of other parts of the Undercliff, is discussed.
931422 Slope stabilisation methods used on the Interstate Route H-3 project Boyce, G M; Abramson, L W Proc 28th Symposium on Engineering Geology and Geotechnical Engineering, Boise, 1-3 April 1992 P59-72. Publ Pocatello: Idaho State University, 1992
931426 Natural evolution of the soft rock cliff at Shanklin, Isle of Wight, and its planning and engineering implications Barton, M E Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P180-188. Publ London: Thomas Telford, 1991
The 17.2km highway project on the Island of Oahu, Hawaii, involves a series of cuts and fills in the fluted topography of the lush valleys along the alignment. The rock encountered is basalt in various stages of weathering. Geotextile-reinforced retaining walls, dowelled portal cuts, tiedback walls, concrete panel walls, and crib walls were amongst the slope stabilisation methods used. The applications for each of these methods are discussed, with reference to design, performance, and problems during construction.
The cliffs at Shanklin are formed of Cretaceous Lower Greensand and have been protected from marine erosion for over 100 years by backshore development. Slope degradation still occurs at a slow rate, with movements ranging from dislodgement of individual blocks to large masses and slides in the talus slope. Details of several major events are presented. Expected evolution of slope geometry is outlined and planning and engineering problems resulting are discussed. Outgrowth of the talus slope is the most immediate problem.
931423 Comparative study of indirect methods of landslip potential assessment Jennings, P J; Siddle, H J; Bentley, S P Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P143-148. Publ London: Thomas Telford, 1991 Indirect methods of landslip susceptibility zoning involve analysis of contributing factors and their locations. They use either empirical rules to produce an algorithm to predict hazard rating or statistical analysis of causal variables. Previously published methods are reviewed and their abilities compared for a study area in the Rhondda Valley. Discriminant and logistic (regression) techniques and the empirically derived landslide prediction algorithm are applied. Specific advantages of each approach are evaluated.
931424 Planning, phasing and implementation of rock slope remedial works in the Scottish Highlands Davies, T P; Hughes, D W Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P149-154. Publ London: Thomas Telford, 1991 Alternative transportation routes are not always available in areas such as the Scottish Highlands, and effective management of the transport system requires systematic hazard assessment and implementation of remedial measures. A typical slope configuration is illustrated and possible geological conditions and potential failure mechanisms described. Hazard classifi~tion and appr=isal procedures adopted are presented. Remedial options and their planning and implementation to minimisc disruption arc discussed.
931427 Recent history and geotechnics of landslides at Gore Cliff, Isle of Wight Bromhead, E N; Chandler, M P; Hutchinson, J N Proc Conference on Slope Stability Engineering: Developments and Applications, Isle of Wight, 15-18 April 1991 P189-196. Publ London." Thomas Telford, 1991 The last of a long series of major movements at Gore Cliff was in 1978. It has been shown to be the result of reactivation of earlier slides, with the basal slip surface controlled by bedding. The investigations into the geomorphology, history, engineering geology, and geotechnics of the slide are described. Residual strength of the slide materials was measured in ring shear tests and estimated by back analyses of the slide. A contribution to instability from water from domestic sources at the cliff top is indicated. Inferences for the general Undercliff area are examined.
931428 Modelling the dynamics of submarine slides (In French) Locat, J; Norem, H; Schieldrop, B
Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 V4, P2849-2855. Publ Rotterdam: A A Balkema, 1990 A two-dimensional viscoelastic model (Norem et al, 1989, 1990), originally developed to describe snow avalanches, has been modified for study of submarine slides. Front velocity and runout distance can be estimated and the shape of the moving mass described. The model has been applied to two case studies and although the results are not entirely satisfactory, it clearly distinguishes the debris flow and the turbidity current generated by the initial slide.
© 1993 Pergamon Press Ltd. Reproduction not permitted