D-Geo Stability



For The Netherlands the safety and stability of the primary sea and driver dikes is essential since over half the population lives below sea level. In total, 3,500 kilometres of primary dikes and over 100,000 kilometres of other embankments protect the country from flooding. Over the past 75 years, the stability of the majority of the dikes and embankments has been checked using methods and tools developed by Deltares, the leading Dutch Institute in this field. Through Deltares systems these tools are available in English for the International GeoEngineering community. Deltares systems tools come with a comprehensive manual and extensive validation and verification reports.

General

D-Geo Stability is a slope stability package for soft soils. Previous releases of D-Geo Stability were named MStab. Deltares systems tools follow best practice, and are developed according to modern software standards; therefore they are user-friendly and easy to learn.

1107Bishop slip circle with shear stresses

Besides features generally found in other slope stability packages, D-Geo Stability offers several specific features for the design of river dikes and road embankments:

Integration with other Deltares products
Integration with the suite of other Deltares systems products. For example, settlements can be introduced using the D-Settlement program. In this way, safety analyses for various (settled) construction stages can be performed.

1114Settled geometry can be imported from D-Settlement

  • The Reliability analyses module
    The reliability module supports the Eurocode 7, allowing for the input of partial safety factors. A stochastic distribution of parameters allows for semi-probabilistic analysis as well as probabilistic analyses. Using the model default parameters for stochastic properties, the user can easily switch from a standard safety analysis to a reliability analysis without additional input data.

1109Influencing factors, resulting from a reliability analysis

  • Probabilistic Random Field method
    Experts in probabilistic analysis can use the Bishop Probabilistic Random Field module, allowing users to take into account spatial variation of parameters.
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  • Uplift calculation
    The Uplift module allows for the safety analysis of river embankments under the influence of changing water levels in aquifers. This may result in the uplift of the hinterland, a mechanism causing numerical difficulties in most FEM approaches.

1115Uplift failure mechanism for river embankments

  • Integration with Watex
    The movement of rising water levels as a result of extensive rainfall events is an important issue for river embankments. The Deltares Watex program allows for fast analysis, resulting in time dependant water pressure distributions that can be imported into D-Geo Stability .

How to get D-Geo Stability?

The latest fully validated release is D-Geo Stability 16.2. This version is available via our Service packages. You can easily order one of our Service packages via software@deltares.nl and then download the software via our Download portal. Our sales team will provide you the instructions on how to install the license file and license manager.