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...

    • for the distribution of the stochastic parameters of the Detailed check (LogNormal instead of Deterministic/Normal)
    • 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.

 

For case I, the same input as case H is used except that the Detailed check is not performed.

 

Benchmarks results

For each cases, the Global and Detailed checks are worked out in an Excel spreadsheet.

...

Overall check: Global passes and Detailed checks fails, that's not logical, so a warning message is displayed in the Overall check. 

D-Flow Slide results

D-FLOW SLIDE results are in accordance with the results by hand as show in the tables below.

Results of benchmark 3-1 for case A:

 

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]

 

No

30.000

15.000

-10.000

 

No

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

6

 

No

6

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

6

Yes

 

Yes

6

Yes

 

OK

0.00 %

OK

Result of the Global check

Pass

Pass

OK

Fictive channel depth Hr [m]19.08719.087 0.00 %
Fictive slope cotan αr  [-]23.00023.000 0.00 % 
Max. allowable retrogression length Lallowable [m]150.000150.0000.00%
Probability of occurence P(ZV) [/km/year] 2.92 × 10-72.92 × 10-70.00 %
Reliability index critical length β-39.999 -
Probability P(L > Lallowable)0.000.000.00 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]0.000.000.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK 
Overall resultWarningWarningOK 
 
Results of benchmark 3-1 for case B: 

 

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

30.000

15.000

-10.000

 

Yes

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?YesYesOK

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

6

 

No

6

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

6

Yes

 

Yes

6

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]21.57121.5710.00 %
Fictive slope cotan αr10.510.50.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 3.95 × 10-73.95 × 10-70.00 %
Reliability index β-1.712-
P(L > Lallowable)4.34 × 10-24.34 × 10-20.23 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]1.72× 10-81.72 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK 
Overall resultFailFailOK
 
Results of benchmark 3-1 for case C:

 

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

28.016

15.000

-10.331

 

Yes

28.016

15.000

-10.331

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

Step 1d:

Flow slide possible based on criteria "steepest slope aver 5m" ?

Average slope over a height of at least 5 m [1:xxx]

 

Yes

3.901

 

Yes

3.901

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

7.395

Yes

 

Yes

7.395

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]23.79123.7910.00 %
Fictive slope cotan αr8.4138.4130.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 5.63 × 10-85.63 × 10-80.00 %
Reliability index β--1.334 -
P(L > Lallowable)9.09 × 10-19.09 × 10-10.00 % 
Probability of flood damage by liquefaction P(falen|ZV) [/year]5.12 × 10-85.12 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK
Overall resultFailFailOK
 
Results of benchmark 3-1 for case D: 

 

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

30.000

15.000

-10.000

 

Yes

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

6

 

No

6

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

6

No

 

Yes

6

No

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]21.57125.5710.00 %
Fictive slope cotan αr10.50010.5000.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 3.92 × 10-73.92 × 10-70.00 %
Reliability index β-1.712 -
P(L > Lallowable)4.34 × 10-24.34 × 10-20.00 % 
Probability of flood damage by liquefaction P(falen|ZV) [/year]1.70 × 10-81.70 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK
Overall resultPassPassOK
 
Results of benchmark 3-1 for case E:

 

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

30.000

15.000

-10.000

 

Yes

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

5.000

 

No

5.000

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

5.000

Yes

 

Yes

5.000

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]25.14325.1430.00 %
Fictive slope cotan αr14140.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 1.44 × 10-61.44 × 10-60.00 %
Reliability index β-0-
P(L > Lallowable)5.00 × 10-15.00 × 10-10.23 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]7.18 × 10-7 7.18 × 10-70.18 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

Pass

Pass

OK 
Overall resultWarning

Warning

OK 

 

Results of benchmark 3-1 for case F:

 

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

25.352

15.000

-10.775

 

Yes

25.352

15.000

-10.775

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

7.099

 

No

7.100

 

OK

0.01 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

7.100

Yes

 

Yes

7.100

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]25.87425.8740.00 %
Fictive slope cotan αr6.6416.6410.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 2.67 × 10-72.67 × 10-70.00 %
Reliability index β-0.974-
P(L > Lallowable)1.65 × 10-11.65 × 10-10.10 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]4.40 × 10-8 4.40 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK 
Overall resultWarningWarningOK 

 

Results of benchmark 3-1 for case G:

 

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

25.352

15.000

-10.775

 

Yes

25.352

15.000

-10.775

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

7.099

 

No

7.100

 

OK

0.01 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

No

7.100

No

 

No

7.100

No

 

OK

0.00 %

OK

Result of the Global check

Pass

Pass

OK

Fictive channel depth Hr [m]25.87425.8740.00 %
Fictive slope cotan αr6.6416.6410.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 2.65 × 10-72.65 × 10-70.00 %
Reliability index β-0.974-
P(L > Lallowable)1.65 × 10-11.65 × 10-10.00 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]4.38 × 10-84.38 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

Pass

Pass

OK 
Overall result

Pass

Pass

OK 

 

 

Results of benchmark 3-1 for case H:

 

Case I:

Global check : idem case H => Global check passes.

Detailed check: Results not available.

Overall check: the Global check passes and the Detailed check is not available. Therefore, the Overall check passes and no warning is given about illogical results.

 

Case J:

Global check : idem case B => Global check fails.

Detailed check: Results not available.

Overall check: the Global check fails and the Detailed check is not available. Therefore, the Overall result is not available, a detailed check is needed.

 

D-Flow Slide results

D-FLOW SLIDE results are in accordance with the results by hand as show in the tables below.

Results of benchmark 3-1 for case A:

 

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]

 

No

30.000

15.000

-10.000

 

No

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

6

 

No

6

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

6

Yes

 

Yes

6

Yes

 

OK

0.00 %

OK

Result of the Global check

Pass

Pass

OK

Fictive channel depth Hr [m]19.08719.087 0.00 %
Fictive slope cotan αr  [-]23.00023.000 0.00 % 
Max. allowable retrogression length Lallowable [m]150.000150.0000.00%
Probability of occurence P(ZV) [/km/year] 2.92 × 10-72.92 × 10-70.00 %
Reliability index critical length β-39.999 -
Probability P(L > Lallowable)0.000.000.00 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]0.000.000.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK 
Overall resultWarningWarningOK 
 
Results of benchmark 3-1 for case B: 

 

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

30.000

15.000

-10.000

 

Yes

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?YesYesOK

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

6

 

No

6

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

6

Yes

 

Yes

6

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]21.57121.5710.00 %
Fictive slope cotan αr10.510.50.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 3.95 × 10-73.95 × 10-70.00 %
Reliability index β-1.712-
P(L > Lallowable)4.34 × 10-24.34 × 10-20.23 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]1.72× 10-81.72 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK 
Overall resultFailFailOK
 
Results of benchmark 3-1 for case C:

 

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

28.016

15.000

-10.331

 

Yes

28.016

15.000

-10.331

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

Step 1d:

Flow slide possible based on criteria "steepest slope aver 5m" ?

Average slope over a height of at least 5 m [1:xxx]

 

Yes

3.901

 

Yes

3.901

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

7.395

Yes

 

Yes

7.395

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]23.79123.7910.00 %
Fictive slope cotan αr8.4138.4130.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 5.63 × 10-85.63 × 10-80.00 %
Reliability index β--1.334 -
P(L > Lallowable)9.09 × 10-19.09 × 10-10.00 % 
Probability of flood damage by liquefaction P(falen|ZV) [/year]5.12 × 10-85.12 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK
Overall resultFailFailOK
 
Results of benchmark 3-1 for case D: 

 

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

30.000

15.000

-10.000

 

Yes

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

6

 

No

6

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

6

No

 

Yes

6

No

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]21.57125.5710.00 %
Fictive slope cotan αr10.50010.5000.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 3.92 × 10-73.92 × 10-70.00 %
Reliability index β-1.712 -
P(L > Lallowable)4.34 × 10-24.34 × 10-20.00 % 
Probability of flood damage by liquefaction P(falen|ZV) [/year]1.70 × 10-81.70 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK
Overall resultPassPassOK
 
Results of benchmark 3-1 for case E:

 

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

30.000

15.000

-10.000

 

Yes

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

5.000

 

No

5.000

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

5.000

Yes

 

Yes

5.000

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]25.14325.1430.00 %
Fictive slope cotan αr14140.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 1.44 × 10-61.44 × 10-60.00 %
Reliability index β-0-
P(L > Lallowable)5.00 × 10-15.00 × 10-10.23 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]7.18 × 10-7 7.18 × 10-70.18 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

Pass

Pass

OK 
Overall resultWarning

Warning

OK 

 

Results of benchmark 3-1 for case F:

 

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

25.352

15.000

-10.775

 

Yes

25.352

15.000

-10.775

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

7.099

 

No

7.100

 

OK

0.01 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

7.100

Yes

 

Yes

7.100

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Fictive channel depth Hr [m]25.87425.8740.00 %
Fictive slope cotan αr6.6416.6410.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 2.67 × 10-72.67 × 10-70.00 %
Reliability index β-0.974-
P(L > Lallowable)1.65 × 10-11.65 × 10-10.10 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]4.40 × 10-8 4.40 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

PassPassOK 
Overall resultWarningWarningOK 

 

Results of benchmark 3-1 for case G:

 

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

25.352

15.000

-10.775

 

Yes

25.352

15.000

-10.775

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

7.099

 

No

7.100

 

OK

0.01 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

No

7.100

No

 

No

7.100

No

 

OK

0.00 %

OK

Result of the Global check

Pass

Pass

OK

Fictive channel depth Hr [m]25.87425.8740.00 %
Fictive slope cotan αr6.6416.6410.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 2.65 × 10-72.65 × 10-70.00 %
Reliability index β-0.974-
P(L > Lallowable)1.65 × 10-11.65 × 10-10.00 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]4.38 × 10-84.38 × 10-80.00 %
Allowable probability of failure [/year]2.50 × 10-6 2.50 × 10-60.00 %

Result of the Detailed check 

Pass

Pass

OK 
Overall result

Pass

Pass

OK 

 

 

Results of benchmark 3-1 for case H:

 

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

25.352

15.000

-10.775

 

Yes

25.352

15.000

-10.775

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

7.099

 

No

7.100

 

OK

0.01 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

No

7.100

No

 

No

7.100

No

 

OK

0.00 %

OK

Result of the Global check

Pass

Pass

OK

Fictive channel depth Hr [m]25.87425.8740.00 %
Fictive slope cotan αr6.6416.6410.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 6.66 × 10-46.66 × 10-40.00 %
Reliability index β-0.974-
P(L > Lallowable)1.65 × 10-11.65 × 10-10.00 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]1.10 × 10-41.10 × 10-40.00 %
Allowable probability of failure [/year]2.50 × 10-7 2.50 × 10-70.00 %

Result of the Detailed check 

FailFailOK 
Overall result

Warning

Warning

OK 

 

Results of benchmark 3-1 for case I:

 

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

25.352

15.000

-10.775

 

Yes

25.352

15.000

-10.775

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

7.099

 

No

7.100

 

OK

0.01 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

No

7.100

No

 

No

7.100

No

 

OK

0.00 %

OK

Result of the Global check

Pass

Pass

OK

Result of the Detailed check 

Not availableNot availableOK 
Overall result

Pass

Pass

OK 

 

 

Results of benchmark 3-1 for case J: 

 

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

30.000

15.000

-10.000

 

Yes

30.000

15.000

-10.000

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?YesYesOK

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

6

 

No

6

 

OK

0.00 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

Yes

6

Yes

 

Yes

6

Yes

 

OK

0.00 %

OK

Result of the Global check

Fail

Fail

OK

Result of the Detailed check 

Not availableNot availableOK 
Overall resultFailFailOK

 

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

25.352

15.000

-10.775

 

Yes

25.352

15.000

-10.775

 

OK

0.00 %

0.00 %

0.00 %

Step 1c: Artificially underwater installed and non-compacted sandy foreshore?NoNoOK

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

7.099

 

No

7.100

 

OK

0.01 %

Step 1e:

Flow slide possible based on average geometry only?

Total inclination of the channel slope [1:xxx]

Is breaching possible?

 

No

7.100

No

 

No

7.100

No

 

OK

0.00 %

OK

Result of the Global check

Pass

Pass

OK

Fictive channel depth Hr [m]25.87425.8740.00 %
Fictive slope cotan αr6.6416.6410.00 % 
Max. allowable retrogression length Lallowable [m]60600.00 %
Probability of preventing a liquefaction P(ZV) [/km/year] 6.66 × 10-46.66 × 10-40.00 %
Reliability index β-0.974-
P(L > Lallowable)1.65 × 10-11.65 × 10-10.00 %
Probability of flood damage by liquefaction P(falen|ZV) [/year]1.10 × 10-41.10 × 10-40.00 %
Allowable probability of failure [/year]2.50 × 10-7 2.50 × 10-70.00 %

Result of the Detailed check 

FailFailOK 
Overall result

Warning

Warning

OK