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- for the distribution of the stochastic parameters of the Detailed check (LogNormal instead of Deterministic/Normal)
- for the channel slope which is 1:6.6 instead of 1:6.
- for the state parameter which is equal to -0.06 instead of -0.03
- for the grain diameters:
- for Calais sand : D50 = 230 μm (instead of 180) and D15 = 130 μm (unchanged)
- for Compacted sand : D50 = 210 μm (instead of 160) and D15 = 110 μm (unchanged)
- for the Detailed check, the required probability of failure is 1 per 40000 years instead of 1 per 4000 years and the migration velocity is 0.5m/year instead of 10 mm /year.
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| Benchmark | D-FLOW SLIDE | Relative error |
|---|---|---|---|
Step 1a: Would flow slide lead to damage on levee? Marge [m] Slope [1:xxx] Assessment level [m + NAP] |
Yes 2527.352280 15.000 -10.775453 |
Yes 2527.352280 15.000 -10.775453 |
OK 0.00 % 0.00 % 0.00 % |
| Step 1c: Artificially underwater installed and non-compacted sandy foreshore? | No | No | OK |
Step 1d: Flow slide possible based on criteria "steepest slope aver 5m" ? Average slope over a height of at least 5 m [1:xxx] |
No 76.099596 |
No 76.100596 |
OK 0.01 02 % |
Step 1e: Flow slide possible based on average geometry only? Total inclination of the channel slope [1:xxx] Is breaching possible? |
No 76.100600 No |
No 76.100600 No |
OK 0.00 % OK |
Result of the Global check | Pass | Pass | OK |
| Fictive channel depth Hr [m] | 2519.87403825 | 19.874038 | 0.00 % |
| Fictive slope cotan αr | 610.6415006 | 10.641500 | 0.00 % |
| Max. allowable retrogression length Lallowable [m] | 60 | 60 | 0.00 % |
| Probability of preventing a liquefaction P(ZV) [/km/year] | 64.66 64 × 10-46 | 4.66 64 × 10-4 | 0.00 % |
| Reliability index β | - | 01.974285 | - |
| P(L > Lallowable) | 19.65 95 × 10-121 | 9.65 95 × 10-12 | 0.00 % |
| Probability of flood damage by liquefaction P(falen|ZV) [/year] | 14.10 62 × 10-5 | 41.10 62 × 10-45 | 0.00 % |
| Allowable probability of failure [/year] | 2.50 × 10-7 | 2.50 × 10-7 | 0.00 % |
Result of the Detailed check | Fail | Fail | OK |
| Overall result | Warning | Warning | OK |
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