The basic of the program is the Surface line.
The user has to create a surface line with ascending x-value from channel side of the embankment till the dike top at the polder side.
The riverside has to be on the left as shown in the figure below.
The original surface line as used in DAM or Ringtoets (WTI) contains a whole set of characteristics points. Flow Slide needs a subset.
Please enter your Surface line by using points B, C, D, G and J
The following 5 characteristics points are obligated in D-FlowSlide with increasing x-value.
- Bottom river channel (B)
- Insert river channel (C)
- Dike toe at river (D)
- Dike top at river (G)
- Dike top at polder (J)
Input screen for the coordinates L and Z and the characteristic points
You may, of course add additional points to describe the real surface line.
By clicking on the table header L(enght) of Z(height level), you can only filter the points, but not order them.
The program checks on a malformed surface.
Messages will be displayed in the window "Validation messages".
D-Flow Slide is developed specifically for geotechnical engineers. It is a tool to perform a (semi-probabilistic) global and (probabilistic) detailed safety assessment on flow sliding in submerged slopes in front of flood defences. Moreover, it includes two advanced calculation models for analyzing static liquefaction and breach flow, that can be used for a tailor-made safety assessment, if the global and detailed assessments fail.
The graphical interfaces requires just a short training period, allowing users to focus their skill directly on the input of the geotechnical data and the subsequent evaluation of the calculated results.
Please double check always your input data of the advanced carefully and discuss the results with @Dick Mastbergen or @Geeralt van den Ham (Deltares)
In this paragraph the major input screens and windows are explained on the basis of a Tutorial (bm-1-1).
The input file can also be downloaded, if you have a legal version of the program.
Main Window: The Cross Section of the problem
All input windows can be found at the Menu bar.
Project contains all input windows for the different models. Only the soil parameters per layer has to be added in the Soil table
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In this tutorial we start with the three standard models
The Soil table for the Global and Detailed models (check the filter) contains several parameters.
The description of all these parameters can be found on the page Input parameters.
Add a soilprofile by using de soillayers from the Soil Table.
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Add a surface line.
The 5 characteristics point are obligated
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The description of these parameters can be found on the page Input parameters.
Add some additional parameters for the models.
| The detailed model needs some extra parameters. The probabilistic parameters are fixed, Only the Mean "Area ratio" can be changed.
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When all parameters have been inserted, you can start the calculation.
If one of the parameters are out of range, a validation message will be given in the table window
When no errors are found, the results are presented. In this case both the global and the detailed model fail.
In this case both standard models fail and the user have to use the advanced models.
The global results:
The detailed results can be found in two different windows:
The advanced models.
In case the global and detailed models both fail, we have to perform an analysis with the advanced models for static liquefaction and/or breach flow.
Select the Advanced models for static liquefaction (Sliq2D) and breach flow (HMBreach) at Project Info and 5 Charts will be shown.
Check the addional soil table parameters for liquefaction: (Set the filter in the soil table on Advanced Liquefaction)
Check the addional soil table parameters for breach flow: (Set the filter in the soil table on Advanced Breaching)
Additional parameters for liquefaction
Additional parameters for breach flow
Restart the calculation. In this case the advanced models indicate no failure of the embankment (both are green).
Download the file of this tutorial to check your legal version.