SLOPE/WSlope Stability Analysis
GEO-SLOPE, GeoStudio, SLOPE/W, SEEP/W, SIGMA/W, QUAKE/W, TEMP/W, CTRAN/W, AIR/W, VADOSE/W, and their logos are trademarks or registered trademarks of GEO-SLOPE International, Ltd. in Canada and/or other countries. Other trademarks are the property of their respective owners. Copyright © 2016 GEO-SLOPE International Ltd. All rights reserved.
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downrightRapid Drawdown
Rapid drawdown analysis can
be conducted using the pore-
water pressures defined using
piezometric lines, transient
finite element GeoStudio
analyses, or the multi-stage
rapid drawdown technique.
layergroupMaterial Models
SLOPE/W supports a
comprehensive list of material
models including Mohr-Coulomb,
undrained, high strength,
impenetrable, bilinear, anisotropic
strength, SHANSEP, spatial
Mohr-Coulomb and more.
scaledownLimit State DesignLimit state design or load
resistance factor design is handled
by specifying partial factors on
permanent/variable loads, seismic
coefficients, material properties,
reinforcement inputs and more.
dropPore-Water PressurePore-water pressures can be
defined using piezometric lines,
spatial functions, or the results
from other GeoStudio finite
element analyses. Values can
be displayed as contours on
the geometry to reveal PWP
values used in the analysis.
With this comprehensive range of features, SLOPE/W can be used to analyze almost any slope stability problem you will encounter in
your geotechnical, civil, and mining engineering projects.
SLOPE/W effectively analyzes both simple and complex problems for a variety of slip surface shapes,
pore-water pressure conditions, soil properties, analysis methods and loading conditions.
Eurocode Design CaseSLOPE/W can be used to complete a stability analysis with the objective
being to check an ultimate limit state in accordance with various limit state
design approaches such as Eurocode 7, Norwegian Standard NS 3480,
and British Standard 8006. The stability analysis is completed with partial
factors applied to characteristic loads and soil strength parameters.
Stability of an MSE WallMechanically stabilized earth (MSE) walls are structures for
retaining the earth under bridges, highways, and waterfront
properties, to name a few. Designing a MSE wall requires
consideration of the geometric configuration and reinforcement
requirement to ensure both internal and external stability.
Reinforcement with Soil NailsThe purpose of this illustrative example is to show how soil nails can
be used to improve the stability of a slope. Features of this simulation
include: Morgenstern-Price analysis method, homogenous material using
the Mohr Coulomb soil model, a dry slope with no pore-water pressure,
four sloping soil nails, and the entry and exit slip surface option.
James Bay Case HistoryThis article looks at the SLOPE/W probabilistic analysis capabilities
relative to the James Bay hydroelectric project. It required the
construction of fifty kilometers of dykes on soft and sensitive clay.
Divergent views were prevalent regarding the selection of safety
factors and strength properties. The project has consequently
become an important and often-cited case history.
SEEP/W results in SLOPE/W
Using SEEP/W finite element pore-water
pressures in SLOPE/W makes it possible to deal
with complex saturated/ unsaturated conditions
or transient pore-water pressure conditions.
From a transient analysis, we know the pore-
water pressure conditions at various points
in time. Using these time- varying pore-water
pressure results in SLOPE/W makes it possible
to look at the changes in stability with time.
SIGMA/W stresses in SLOPE/W
There are many geotechnical cases where it
is desirable to not only perform a deformation
analysis, but also to look at stability. In other
instances, a SLOPE/W limit equilibrium stability
analysis alone is inadequate. For cases like this,
the SIGMA/W computed stresses can be used
in SLOPE/W to compute the safety factors.
VADOSE/W results in SLOPE/W
Using VADOSE/W computed pore-
water pressures in SLOPE/W makes it
possible to model the effects of climate-
controlled, net infiltration on stability.
QUAKE/W results in SLOPE/W
Earthquake shaking of ground structures
creates inertial forces that may affect the
stability of the structures. The shaking may also
generate excess pore-water pressures. Both the
dynamic stress conditions and the generated
pore-water pressures can be taken into
SLOPE/W to study how an earthquake affects
the earth structure stability and deformation.
SLOPE/W can model a comprehensive range of stability problems
SLOPE/W offers simple but powerful analytical capabilities when used in combination with other GeoStudio products.
Create problem workspace and analysis properties
navigatedownDraw or import domain regions from a CAD program
navigatedownDefine material properties and pore-water pressure
navigatedownDefine loading conditions and reinforcement
navigatedownDefine a set of trial slip surfaces
navigatedownSolve your analyses
navigatedownDisplay computed slip surfaces as a color map
navigatedownView slip surface details, generate plots and reports
SLOPE/W’s intuitive modeling workflow