design of logitudinal profile of san juan diversion channel · design of logitudinal profile of san...
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F - 8 - 29
Design of Logitudinal Profile of San Juan Diversion Channel
-4
-2
0
2
4
6
8
10
0 500 1000 1500 2000 2500
Distance from the Sea (m)
Ele
vation (
m in M
.S.L
.)Ground Level
Design Riverbed Level
Design Water Level
Design Dike Level
Fish Pond Area
THE STUDY ON COMPREHENSIVE FLOOD MITIGATION
FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.
Nippon Koei Co., Ltd
Fig. 8.29 Longitudinal Profile and Standard Cross Section of
Proposed San Juan Diversion Channel
F - 8 - 30
THE STUDY ON COMPREHENSIVE FLOOD MITIGATION
FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.
Nippon Koei Co., Ltd
Fig. 8.30 Standard Cross Sections for
Drainage Improvement
F - 8 - 32
THE STUDY ON COMPREHENSIVE FLOOD MITIGATION
FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.
Nippon Koei Co., Ltd
Fig. 8.32 Typical Plan and Elevation of Large Dimension
Tidal Gate Structure for Inland Drainage Improvement
F - 8 - 33
THE STUDY ON COMPREHENSIVE FLOOD MITIGATION
FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.
Nippon Koei Co., Ltd
Fig. 8.33 Typical Drawing of Tidal Gate Leaf and
Flap Gate for Inland Drainage Improvement
THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION
FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd
Nippon Koei Co., Ltd
Fig. 8.34
Typical Drainage Channel Improvement andStructures
F - 8 - 34
Leveling Concrete
Wet Stone Masonry (t=200~350mm)Top Concrete (t=100mm)
Backfill Gravel
4003.000400 2.700 400
500
2.40
040
0
5.9002.400 2.400 400
2.10
030
0
500
2.00
0
6.000
400
2.40
050
0
4002.70040040
02.
400
500
3.000300
3.000400
7.10040
02.
500
500
400
400300
500
2.40
040
0
300
2.10
0
400
Box CulvertQ=5m3/sI=1/1500B=3.0mx 1nos.B=2.7mx 1nos.
I=1/1000Q=5m3/sBox Culvert
Q=10m3/sBox Culvert Box Culvert
Q=10m3/sI=1/1500B=3mx 2nos.B=3mx 2nos.
I=1/2000 Open ChannelQ=10m3/sI=1/2000B=6m
Box CulvertQ=5m3/sI=1/1000B=2.7mx 1nos.
Base Concrete
Revetment(Slope Protection)
Ground Level
Concrete Pile 350mm [email protected]
Parapet Wall
Parapet Wall for Overtopping Flood
Typical Section of Box Culvert and Open Channelfor Drainage Main and Inter Ceptor
Typical Cross Section of Bank Slope Protection
F - 8 - 35
Relation of Cost between Diversion and Retarding Basin(5-year)
0
200
400
600
800
1000
1200
0 50 100 150 200 250
Peak Cut Discharge at Ilang-Ilang Bridge by Diversion (m3/s)
Con
str
uction
Cost
(mil. P
)
Cost by Diversion alone
Retarding Basin alone
Total Cost by Combination of Diversion & Retarding Basin
Peaj Cut Discharge at Ilang-Ilang Bridge by Retarding Basin (m3/s)
250 200 150 100 100 0
Relation of Cost between Diversion and Retarding Basin(10-year)
0
200
400
600
800
1000
1200
1400
0 50 100 150 200 250 300 350 400 450
Peak Cut Discharge at Ilang-Ilang Bridge by Diversion (m3/s)
Cons
truct
ion
Cos
t (m
il. P
)
Cost by Diversion alone
Retarding Basin alone
Total Cost by Combination of Diversion & Retarding Basin
Peaj Cut Discharge at Ilang-Ilang Bridge by Retarding Basin (m3/s)
450 400 350 300 250 200 150 100 50 0
Relation of Cost between Diversion and Retarding Basin(20-year)
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0 100 200 300 400 500 600 700
Peak Cut Discharge at Ilang-Ilang Bridge by Diversion (m3/s)
Cons
truc
tion
Cos
t (m
il. P
)
Cost by Diversion alone
Retarding Basin alone
Total Cost by Combination of Diversion & Retarding Basin
Peaj Cut Discharge at Ilang-Ilang Bridge by Retarding Basin (m3/s)700 600 500 400 300 200 100 0
THE STUDY ON COMPREHENSIVE FLOOD MITIGATION
FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.
Nippon Koei Co., Ltd
Fig. 8.35 Combination Cost between
Retarding Basin and Diversion Channel
F - 8 - 36
Star
t of W
ater
Del
iver
y
Late
Sta
rt of
Pr
epar
atio
n
Late
Ter
min
al D
rain
age
Late
Pla
ntin
gEa
rly S
tart
Of L
and
Pr
epar
atio
n
Early
Pla
ntin
gEa
rly T
erm
inal
Dra
inag
e
Proj
ectio
n of
Cro
ppin
g Pa
tter
n B
ased
on
Tra
nspl
antin
g an
d H
arve
stin
g of
Pal
ay
June
May
Nov
embe
rO
ctob
erSe
ptem
ber
Aug
ust
July
Proj
ectio
n of
Cro
ppin
g Pa
tter
n B
ased
on
Star
t and
Cut
-off
Dat
e of
Wat
er D
eliv
ery
CTI Engineering International Co., Ltd. Nippon Koei Co., Ltd
THE STUDY ON COMPREHENSIVE FLOOD MITIGATION
FOR CAVITE LOWLAND AREA
Fig.8.36 Cropping Pattern of Palay in Cavite Province
(2nd Crops)