Transcript Dia 1 - VATT

Pori 1/250 virtaama
1400
1200
Virtaama (m3/s)
1000
800
600
400
200
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Vuorokausi
Ka 1/250 1971-2000
Ka 1/250 2020-2049
21
22
23
24
25
26
27
28
29
Hydraulic simulations
• Model used
– HEC-RAS 4.0b
– 1D model
• Boundary conditions
– Upper: Discharge hydrograph
– Lower: Constant sea levels [N + 0.50…2.50 m]
60
• Water elevations to Excel (numeric results)
and ArcGIS (graphic results)
– Output interval: 12 hours (enough?)
2.7
2.6
2.5
W Luotsinmäen haara [N60+m]
2.4
Luotsimäenhaara
2.3
2.2
2.1
2
1.9
1.8
1.7
1.6
1.5
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
W Raumanjuovan haara [N60+m]
Maximum difference: 0.12 m.
Raumanjuopa
2.7
Vedenkorkeus [N60+m]
3.50
3.00
2.50
2.00
1.50
0
5
10
15
20
Paalu
Q1243m³/s, yksinkertaistettu
Q1243m³/s, mallinnettu
Q1104m³/s, yksinkertaistettu
Q1104m³/s, mallinnettu
Q950m³/s, yksinkertaistettu
Q950m³/s, mallinnettu
Q950m³/s, yksinkertaistettu
Q707m³/s, mallinnettu
Q656m³/s, yksinkertaistettu
Q656m³/s, mallinnettu
25
Binding RHR and water levels
Pori_TOLER ATE
.04
P lan: TOLER ATE_uns 3/3_20-49_1. 5m
.02
7/20/2007
.04
12
Legend
WS Max WS
10
Ground
Ineff
8
Bank Sta
Elevation (m)
6
4
2
0
-2
-4
-6
0
500
1000
1500
2000
Station (m)
2500
3000
3500
4000
Flood mapping process
Initial conditions [650 m³/s, 1.50 m]
Maximum water level [1243 m³/s, 1.50 m]
Suggestion for output of results
• Simulations for discharge-sea level –scenarios
• HQ 250, 100, 50, 30
• N60+ 0.5, 1.0, 1.5, 2.0 m
• Water levels in main reach cross sections in every 12 hours
• Top levels of embankments included in the results
Comments, suggestions? Shall I calculate the rest of the
scenariosand deliver the results to VATT?