Oeverinscharing zandwinput Bergweg, Overijssel, 1997
This document contains the requirements and functional design for a software kernel that computes the safety assessment of the failure mode flow slide.
Requirements
The functional requirements for D-FlowSlide are:
...
- Every computation by D-FlowSlide deals with one surface level and a 1D Soil profile.
- The original surface line as used in DAM or Ringtoets (WTI) contains a whole set of characteristics points. D-FlowSlide needs only a subset.
- The safety assessment consists of passing through different phases:
- A
- A Global
check - check according to the global assessment rules
as given in the VTV-2006 and Handreiking Voorland Zettingsvloeiingen of Deltares:- A Global check for liquefaction
- given in Toetsmethode zettingsvloeiing (versie 2, 22 februari 2016) ; A Global assessment is solely based on geometric characteristics of under water slope and levee,
- A Detailed check
A Global check for breaching- according to the probabilistic assessment method described
in the Handreiking Voorland Zettingsvloeiingen;- in Toetsmethode zettingsvloeiing (versie 2, 22 februari 2016); In the detailed check also soil properties are taken into account.
- An Advanced check
, using two - is usingthe two advanced programs of Deltares
, that give no direct assessment result (approved, disapproved, etc), but can be used for further advanced (probabilistic) analysis- :
SLIQ2D for the - :
- ;HMBreach/HMTurb for the
- , using the original program Sliq2D
- Advanced check for breach flow, using the original program HMBreach.
A Detailed check
In the folowing paragraphs the functional design for D-FlowSlide has been explained. Detailed documentes can be found in the literature list
The definition of the symbols used in this Background section can be found in the Symbols sub-section.the Symbols list.
Assessment scheme D-Flow Slide
The figure below shows the assessment scheme for D-Flow Slide, which largely corresponds with the steps in the safety assessment in WBI2017.
Figure 1: Assessment scheme for D-Flow Slide