27
F - 6 - 1 CTI Engineering Internationa Co., Ltd. Nippon Koei Co., Ltd THE STUDY ON COMPREHENSIVE FLOOD MITIGATION FOR CAVITE LOWLAND AREA Fig. 6.1 Location of Transfer Station and Sanitary Landfill Sites for New Solid Waste Management System in Cavite Province

THE STUDY ON COMPREHENSIVE FLOOD MITIGATION ...NIA Canal 2 1 3 Yla ng- la River San Juan River Pasong Kastila Dam 4 Ilang-Ilang Bridge Panamitan River 6 Bayan D ivers on Dam Diversion

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  • F - 6 - 1

    CTI Engineering Internationa Co., Ltd. Nippon Koei Co., Ltd

    THE STUDY ON COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA

    Fig. 6.1 Location of Transfer Station and Sanitary Landfill Sites for New Solid Waste Management System in

    Cavite Province

  • THE STUDY ON Fig. 8.1COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd.

    Longitudinal Profile and Channel Width of Imus River (Present Condition)

    F - 8 - 1

    Longitudinal Profile of Imus River (Existing)

    -10

    -5

    0

    5

    10

    15

    20

    25

    30

    35

    40

    0 2000 4000 6000 8000 10000 12000 14000

    Distance from Rivermouth (m)

    Ele

    vation (m

    in M

    SL)

    Deepest Riverbed

    Mean Riverbed

    Left Bank

    Right BankA

    guin

    aldo

    Hig

    hw

    ay

    NIA

    Can

    al

    Riverbed Slope

    Nat

    ional

    Rd. B

    ridge

    Anab

    uD

    am

    Channel Width of Imus River (Existing)

    200

    150

    100

    50

    0

    50

    100

    150

    200

    0 2000 4000 6000 8000 10000 12000 14000

    Distance from Rivermouth (m)

    Wid

    th (m

    in t

    ota

    l)

    Width if River Channel

    Steep River Gradient Gentle River Gradient

    Agu

    inal

    do H

    ighw

    ay

    Nat

    ional

    Rd. B

    r.

    NIA

    Can

    al

    Anab

    uD

    am

  • THE STUDY ON Fig. 8.2COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd.

    Longitudinal Profile and Channel Width of Julian River (Present Condition)

    F - 8 - 2

    Longitudinal Profile of Julian River (Existing)

    -10.000

    -5.000

    0.000

    5.000

    10.000

    15.000

    20.000

    25.000

    30.000

    35.000

    40.000

    0 2000 4000 6000 8000 10000 12000

    Distance from Imus River (m)

    Ele

    vation (

    m in M

    SL)

    Deepest Riverbed

    Mean Riverbed

    Left Bank

    Right Bank

    Sta

    .0+450 B

    ridg

    e (

    EL+4.6

    )

    Bucan

    dala

    Dam

    ImusRiver

    Sta

    .1+430 B

    ridg

    e (

    EL+6.3

    )

    Sta

    .1+950 B

    ridg

    e (

    EL+7.6

    )

    Sta

    .4+520

    Bridg

    e (

    EL+13.6

    )

    Sta

    .4+850

    Jul

    ian

    Bridge

    (EL+16.6

    )

    Sta

    .8+930

    Bridg

    e (

    EL+32.2

    )

    Channel Width of Julian River (Existing)

    200

    150

    100

    50

    0

    50

    100

    150

    200

    0 2000 4000 6000 8000 10000 12000

    Distance from Rivermouth (m)

    Wid

    th (

    m in t

    ota

    l)

    Width of River Channel

    Bridge & Dam

    NIA

    Can

    al

  • THE STUDY ON Fig. 8.3COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd.

    Longitudinal Profile and Channel Width of Bacoor River (Present Condition)

    F - 8 - 3

    Longitudinal Profile of Bacoor River (Existing)

    -10

    -5

    0

    5

    10

    15

    20

    25

    30

    35

    40

    0 1000 2000 3000 4000 5000 6000 7000 8000

    Distance from Rivermouth (m)

    Ele

    vation (m

    in M

    SL)

    Deepest Riverbed

    Mean Riverbed

    Left Bank

    Right Bank

    Nat

    ional

    Rd. B

    ridge

    Bridge

    SMBacoor

    Pan

    apaa

    nB

    ridge

    Agu

    inal

    doH

    .W.

    Flat

    Steep

    FishPond Sub-Division

    Channel Width of Bacoor River (Existing)

    200

    150

    100

    50

    0

    50

    100

    150

    200

    0 1000 2000 3000 4000 5000 6000 7000 8000

    Distance from Rivermouth (m)

    Ele

    vation (

    m in M

    SL)

    Width if River Channel

    Fishpond Area SubdivisionAguinaldoHighway

    SMBacoor

    : Main Bridge

  • THE STUDY ON Fig. 8.4COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd.

    Longitudinal Profile and Channel Width of San Juan River (Present Condition)

    F - 8 - 4

    Longitudinal Profile of San Juan River (Existing)

    -10.000

    -5.000

    0.000

    5.000

    10.000

    15.000

    20.000

    25.000

    30.000

    35.000

    40.000

    0 2000 4000 6000 8000 10000 12000 14000 16000

    Distance from Rivermouth (m)

    Ele

    vation (

    m in M

    SL)

    Deepest Riverbed

    Mean Riverbed

    Left Bank

    Right Bank

    Left Dike

    Right Dike

    Merging withYlang-Ylang River

    Bay

    an D

    am

    NIA

    Can

    al

    Nove

    reta

    Div

    ers

    ion B

    r.

    Nove

    reta

    Br.

    Yla

    ng-

    Yla

    ng

    Br.

    Flat

    Steep

    Flat

    Channel Width of San Juan River (Existing)

    200

    150

    100

    50

    0

    50

    100

    150

    200

    0 2000 4000 6000 8000 10000 12000 14000 16000

    Distance from Rivermouth (m)

    Wid

    th (m

    in t

    ota

    l)

    Width of River Channel

    Bay

    an D

    am

    NIA

    Can

    al

    Nove

    reta

    Div

    ers

    ion B

    r.

    Nove

    reta

    Br.

    Yla

    ng-

    Yla

    ng

    Br.

    Ylang-Ylang River

  • THE STUDY ON Fig. 8.5COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd.

    Longitudinal Profile and Channel Width of Ylang-Ylang River (Present Condition)

    F - 8 - 5

    Longitudinal Profile of San Juan - Ylang-Ylang River (Existing)

    -10.000

    -5.000

    0.000

    5.000

    10.000

    15.000

    20.000

    25.000

    30.000

    35.000

    40.000

    0 2000 4000 6000 8000 10000 12000 14000 16000

    Distance from Rivermouth (m)

    Ele

    vation (

    m in M

    SL)

    Deepest Riverbed

    Mean Riverbed

    Left Bank

    Right Bank

    Left Dike

    Right Dike

    Merging withSan Juan River

    NIA

    Can

    al

    Nove

    reta

    Div

    ers

    ion B

    r.

    Nove

    reta

    Br.

    Yla

    ng-

    Yla

    ng

    Br.

    Flat

    Steep

    Channel Width of San Juan - Ylang-Ylang River (Existing)

    200

    150

    100

    50

    0

    50

    100

    150

    200

    0 2000 4000 6000 8000 10000 12000 14000 16000

    Distance from Rivermouth (m)

    Wid

    th (m

    in t

    ota

    l)

    Width if River Channel

    Nove

    reta

    Div

    ers

    ion B

    r.

    Nove

    reta

    Br.

    Yla

    ng-

    Yla

    ng

    Br.

    NIA

    Can

    al

    San Juan River Ylang-Ylang River

    San Juan River

  • THE STUDY ON Fig. 8.6COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd.

    Longitudinal Profile and Channel Width of Canas River (Present Condition)

    F - 8 - 6

    Longitudinal Profile of Canas River (Existing)

    -10

    -5

    0

    5

    10

    15

    20

    25

    30

    35

    40

    0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

    Distance from Rivermouth (m)

    Ele

    vation (

    m in M

    SL)

    Deepest Riverbed

    Mean Riverbed

    Left Bank

    Right Bank

    Left Dike

    Right Dike

    Road Surface Elevation along Left Bank

    Road Surface Elevation along Left Bank

    NIA

    Can

    al

    Plu

    cena

    Dam

    Teje

    ro B

    r.

    Flat

    Steep

    Flat

    Channel Width of Canas River (Existing)

    200

    150

    100

    50

    0

    50

    100

    150

    200

    0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

    Distance from Rivermouth (m)

    Wid

    th (

    m in t

    ota

    l)

    Width if River Channel

    Teje

    ro B

    r.

    NIA

    Can

    al

    Plu

    cena

    Dam

  • F - 8 - 7

    THE STUDY ON

    COMPREHENSIVE FLOOD MITIGATION FOR CAVITE LOWLAND AREA

    CTI Engineering International Co., Ltd. Nippon Koei Co., Ltd

    Fig. 8.7 Targeted River Stretch for River Channel Improvement for 20-year Return Period Flood

  • F - 8 - 8

    THE STUDY ON COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd

    Fig. 8.8

    Proposed Sites for Off-site Flood Retarding Basins and On-site Retention Ponds

  • F - 8 - 9

    THE STUDY ON COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd

    Fig. 8.9

    Proposed Alignment of San Juan Diversion Channel

    w/ on-site w/o on-site2-year 0 605-year 200 27010-year 430 48020-year 670 700

    Design Discharge (m3/s)

  • F - 8 - 10

    THE STUDY ON COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd

    Fig. 8.10

    Conceived Structural Measures against Inland Flood based on Coastal Dike with Tidal Gates

    (Alternative D-1 : Full Protection)

  • F - 8 - 11

    THE STUDY ON COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd

    Fig. 8.11

    Conceived Structural Measures against Inland Flood based on Ring Dike System (Alternative D-2 : Full Protection)

  • F - 8 - 12

    THE STUDY ON COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd

    Fig. 8.12

    Conceived Structural Measures against Inland Flood based on Coastal Dike with Tidal Gates

    (Alternative D-1 : Partial Protection)

  • F - 8 - 13

    THE STUDY ON COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd

    Fig. 8.13

    Conceived Structural Measures against Inland Flood based on Ring Dike System

    (Alternative D-2 : Partial Protection)

  • Design Discharge Distribution of Imus RiverBasin

    Fig. 8.14

    F - 8 - 14

    THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA

    CTI Engineering International Co., Ltd.Nippon Koei Co., Ltd

    Bacoor Bay

    10

    Island CoveBridge

    8

    Daan BukidCreek

    Habay Bridge

    Bacoor River

    Imus River

    Palico Bridge

    7

    Muntino Bridge

    Banalo Bridge9

    Balsahan Bridge Imus Bridge

    Taclong II Bridge

    Julian River

    1

    NIA Canal

    4 3

    AnabuDam

    2

    5

    6

    Triburary

    Triburary

    Triburary

    7u8u8d

    9u

    4u

    5u

    3-2 3-1

    1d

    Retarding Basin

    2-year 5-year 10-year 20-year 2-year 5-year 10-year 20-year1 310 430 500 600 250 350 430 550

    1d 190 250 280 350 160 210 250 3002 280 380 440 520 230 320 390 4703 130 160 170 190 90 120 140 160

    3-1 170 180 180 180 150 180 180 1803-2 100 130 140 140 70 110 130 1404u 110 130 140 150 70 110 130 140

    4 85 120 130 130 55 95 120 1305u 30 35 35 35 25 35 35 35

    5 15 15 15 15 15 15 15 156 350 450 520 540 290 400 470 530

    7u 80 100 110 130 70 90 100 1207 25 45 55 60 20 40 50 60

    8u 75 75 75 75 70 75 75 758 50 50 50 50 50 50 50 50

    8d 35 45 55 60 35 45 50 559u 65 65 65 75 65 65 65 70

    9 50 75 95 110 50 70 80 10010 370 450 520 560 320 400 470 550

    Point No.

    Peak Discharge for Each Return Period (m3/s)with On-Site

    F_I.3without On-Site

    F_I.2

    BucandalaDam

  • Design Discharge Distribution of San Juan RiverBasin

    Fig. 8.15

    F - 8 - 15

    THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA

    CTI Engineering International Co., Ltd.Nippon Koei Co., Ltd

    Bacoor Bay

    San JuanBridge

    5

    Panamitan Bridge

    NIA Canal

    2 1

    3

    Ylang-Ylang River

    San Juan River

    Pasong KastilaDam

    4

    Ilang-IlangBridge

    Panamitan River

    6

    BayanDamDiversion

    Diversionpoint

    3d

    1d

    4u

    Retarding Basin

    2-year 5-year 10-year 20-year 2-year 5-year 10-year 20-year1 160 230 350 470 130 220 340 460

    1d 120 130 140 160 120 130 140 1602 180 240 270 300 170 230 260 2903 270 370 490 620 220 300 430 580

    3d 200 220 250 320 190 210 240 3004u 220 260 290 350 200 240 280 330

    4 170 210 260 350 170 200 240 3305 330 420 485 610 310 410 460 5806 330 420 485 610 310 410 460 580

    Point No.

    Peak Discharge for Each Return Period (m3/s)with On-Site

    F_S.5Rwithout On-Site

    F_S.2

  • Design Discharge Distribution of San Juan RiverBasin

    Fig. 8.16

    F - 8 - 16

    THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA

    CTI Engineering International Co., Ltd.Nippon Koei Co., Ltd

    Bacoor Bay

    San JuanBridge

    5

    Panamitan Bridge

    NIA Canal

    2 1

    3

    Ylang-Ylang River

    San Juan River

    Pasong KastilaDam

    4

    Ilang-IlangBridge

    Panamitan River

    6

    BayanDamDiversion

    Diversionpoint 7

    Proposed Diversion Channel

    2-year 5-year 10-year 20-year 2-year 5-year 10-year 20-year1 160 230 350 470 130 220 340 4602 220 340 460 600 190 320 450 5803 270 370 490 620 220 300 430 5804 280 390 510 640 220 330 460 6005 350 400 400 400 340 400 400 4006 350 400 400 400 340 400 400 4007 60 270 480 700 0 200 430 670

    Point No.

    Peak Discharge for Each Return Period (m3/s)with On-Site

    F_S.5Dwithout On-Site

    F_S.3

  • Design Discharge Distribution of San Juan RiverBasin

    Fig. 8.17

    F - 8 - 17

    THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA

    CTI Engineering International Co., Ltd.Nippon Koei Co., Ltd

    Bacoor Bay

    San JuanBridge

    5

    Panamitan Bridge

    NIA Canal

    2 1

    3

    Ylang-Ylang River

    San Juan River

    Pasong KastilaDam

    4

    Ilang-IlangBridge

    Panamitan River

    6

    BayanDamDiversion

    Diversionpoint

    3d

    1

    4u

    Retarding Basin

    7

    Proposed Diversion Channel

    2-year 5-year 10-year 20-year 2-year 5-year 10-year 20-year1 160 230 350 470 130 220 340 460

    1d 150 210 250 270 120 190 240 2602 170 320 370 390 170 290 370 3903 270 370 490 620 220 300 430 580

    3d 260 350 410 450 190 290 380 4404u 270 370 440 480 200 320 400 470

    4 260 330 390 420 190 280 360 4105 350 400 400 400 320 400 400 4006 350 400 400 400 320 400 400 4007 40 200 250 300 0 150 250 300

    with On-SitePoint No.

    Peak Discharge for Each Return Period (m3/s)

    F_S.4withwithout On-Site

    F_S.4wo

  • F - 8 - 18

    THE STUDY ON COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREA CTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd

    Fig. 8.18

    Design Discharge Distribution for Inland Drainage Channel

    (with On-site Retention Pond)

  • THE STUDY ON Fig. 8.19COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd.

    Design Longitudinal Profile of Imus and Bacoor/Julian River

    F - 8 - 19

    Longitudinal Profile of Imus River(Improvement Plan)

    -10

    -5

    0

    5

    10

    15

    20

    25

    30

    35

    40

    0 2000 4000 6000 8000 10000 12000 14000

    Distance from Rivermouth (m)

    Ele

    vation (m

    in M

    SL)

    Deepest Riverbed

    Left Bank

    Right Bank

    Design High Water Level

    Design Dike Level

    Design Riverbed

    Bac

    oor

    Riv

    er

    Agu

    inal

    do H

    ighw

    ay

    NIA

    Can

    al

    Nat

    ional

    Rd.

    Br.

    Anab

    uD

    am

    EL+0.8m

    EL+2.40m(Sta.4+000)

    EL+28.5EL+25.4m

    (Sta.12+000)

    1/2,500

    1/250

    1/250

    1/750

    Longitudinal Profile of Bacoor River(Applicable Max. Improvement Plan)

    -10

    -5

    0

    5

    10

    15

    0 1000 2000 3000 4000 5000 6000 7000 8000

    Distance from Rivermouth (m)

    Ele

    vation (m

    in M

    SL)

    Deepest Riverbed

    Left Bank

    Right Bank

    Design H.W.L.

    Design Dike Level

    Design Riverbed

    Nat

    ional

    Rd.

    Bridg

    e

    Bridg

    e

    SM

    Bacoor

    Pan

    apaa

    nB

    ridg

    e

    Agu

    inal

    doH

    .W.

    Flat

    Steep

    Fish

    Pond Sub-Division

    Longitudinal Profile of Julian River (Plan)

    -10.000

    -5.000

    0.000

    5.000

    10.000

    15.000

    20.000

    25.000

    30.000

    35.000

    40.000

    0 2000 4000 6000 8000 10000 12000

    Distance from Imus River (m)

    Ele

    vation (m

    in M

    SL)

    Deepest Riverbed

    Left Bank

    Right Bank

    Design H.W.L.

    Design Dike Level

    Design Riverbed

    Sta

    .0+450 B

    ridg

    e (

    EL+4.6

    )

    Bucan

    dala

    Dam

    Imus

    River

    Sta

    .1+430 B

    ridg

    e (

    EL+6.3

    )

    Sta

    .1+950 B

    ridg

    e (

    EL+7.6

    )

    Sta

    .4+520

    Bridg

    e (

    EL+13.6

    )

    Sta

    .4+850

    Julia

    n B

    ridg

    e(E

    L+16.6

    )

    Sta

    .8+930

    Bridg

    e (

    EL+32.2

    )

  • THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd

    Nippon Koei Co., Ltd

    Fig. 8.20Typical River Channel ImprovementPlan of Imus River

    F - 8 - 20

    2+700 3+200

    3+000

    30m for 5-year return period

    35m for 10-year return period

    40m for 20-year return period

    MSL+0.00MSL+0.00

    MSL+0.00

    Existing Cross-Section Line

    Existing Cross-Section Line

    Standard Cross-Section LineStandard Cross-Section LineExisting Cross-Section Line

    Standard Cross-Section Line

    -4.00

    +1.73

    +1.73~3.84

    -4.0~-1.83

    D.H.W.L

    3000

    BasicallyNo need to ImproveNo Need to Improve

    Dredging

    4000 50,000~100,000 4000

    2000

    30,000

    Raising of Existing Road Step Revetment

    H:B=1:3.0 H:B=1:2.0 H:B=1:2.0

    H:B=1:3.0

    1000

    5730

    300024,500

    800

    5700

    ~~6

    500

    28002800 4000 400010,000

    2000

    Riprap Filling

    1:2.01:2.0

    Installation ofParapet Wall/Embankmentwhen needed

    Installation ofParapet Wall/Embankmentwhen needed

    Standard Cross-Section Linefor 20-year return period with on-site

    Standard Cross-Section Linefor 10-year return period with on-site

    Installation ofParapet Wall/Embankmentwhen needed

    Excavation/Dredging

    Standard Cross Section (Sta.0+000~Sta.2+000:Rivermouth to Binakayan Bridge):400m3/s(For All Alternatives)

    Standard Cross Section (Sta.2+000~Sta.3+200:Binakayan Bridge to Merging with Julian R.):400m3/s(For Partial Improvement: F_I.2 and F.I.3)

    (Typical)

    (Typical)

    Typical Cross Section for Full-Scaled Improvement : 660, 810 and 970m3/s(For Partial Improvement: F_I.2 and F.I.3)

  • THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd

    Nippon Koei Co., Ltd

    Fig. 8.21

    Typical River Channel Improvement Plan of Bacoor River

    F - 8 - 21

    21,000

    3000 3000

    Existing Cross-Section Line

    Standard Cross-Section Line0+800

    Embankment Embankment

    Existing Cross-Section Line

    EmbankmentEmbankmentExcavation /

    Dredging

    2+800

    4+600

    Existing Cross-Section LineInstallation ofParapet Wall / EmbankmentWhen needed

    Steel Sheet Pile/Wet Stone Masonry Revetment

    Excavation /Dredging

    Excavation /Dredging

    Existing Cross-Section Line

    Standard Cross Section (Sta.0+000~Sta.3+000:Rivermouth to Fishpond Area: 100~135m3/s)

    2500 1700

    600

    46,2003,000 3,000

    (Typical)

    Standard Cross Section (Sta.4+000~Sta.5+000:SM Bacoor to Aguinaldo H.W.)

    For Full Scaled ImprovementQ=125m3/s

    For Partial ImprovementQ=65m3/s

    3000 3000

    15,000

    2800

    600

    600

    36,800

    2800

    ~4158

    4+600

    (Typical)

    Partial Full Scaled

    D.H.W.L

    Standard Cross-Section Line

    D.H.W.L D.H.W.L

    Standard Cross-Section Line

  • THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd

    Nippon Koei Co., Ltd

    Fig. 8.22Typical River Channel ImprovementPlan of Julian River

    F - 8 - 22

    1:0.

    5

    1:0.5

    H.W.L

    15.700

    2.0009.0002.000

    0.60

    02.

    100

    2.50

    0

    4.500

    8.600

    3.50

    00.

    600

    1:0.

    5

    1:0.5

    H.W.L1:0.5

    1:0.

    5

    10.300

    6.000

    5-year : 120m3/s2-year : 90m3/s

    2.000 13.000 2.000

    19.700

    H.W.L1:0.5

    Sta.0+000-Sta.4+800(Bucandala Dam)

    5-year return period : 200m3/s

    12.100

    8.000

    3.50

    00.

    600

    H.W.L

    1:0.5 1:0.

    5

    2-year : 90m3/s 5-year : 120m3/s

    H.W.L

    Sta.8+000-Sta.10+000Sta.4+800-Sta.8+000

    2-year return period : 140m3/s

    0.60

    03.

    500

    2.50

    02.

    100

    0.60

    0

    1:0.

    5

    1:0.

    51:0.5

    H.W.L

    0.60

    03.

    500

    6.000

    10.100

    H.W.L

    2-year: No Improvement for Lower Channel with Dike of Upper Channel5-year: Widening and Dike

    H.W.L

    2-year: No Improvement5-year: Widening is required.

    H.W.L H.W.L

    2-year: No Improvement5-year: No Improvement

    1+400 2+200

    4+400 6+600

    2-year: Widening / Dike5-year: Widening / Dike

    Standard Cross Section of Julian River : 2-year (140m3/s) (Partial) and 5-year return period (200m3/s) (Full Scaled)

    Existing Cross-Section Line

    Standard Cross-Section Linefor 2-year return period

    Standard Cross-Section Linefor 5-year return period

  • THE STUDY ON Fig. 8.23COMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd.

    Nippon Koei Co., Ltd.

    Design Longitudinal Profile of San Juan and Ylang-Ylang River

    F - 8 - 23

    Longitudinal Profile of San Juan River(For All Scaled River Improvement)

    -10.000

    -5.000

    0.000

    5.000

    10.000

    15.000

    20.000

    25.000

    30.000

    35.000

    40.000

    0 2000 4000 6000 8000 10000 12000 14000 16000

    Distance from Rivermouth (m)

    Ele

    vati

    on (m

    in M

    SL)

    Deepest Riverbed

    Left Bank

    Right Bank

    Desing H.W.L

    Desing Dike Level

    Design Riverbed

    Merging with

    Ylang-Ylang River

    Bay

    an D

    am

    NIA

    Can

    al

    EL+0.8m

    EL+5.8m(Sta.6+000)

    EL+18.375EL+20.643m(Sta.10+550)

    1/1,200

    1/500

    1/400

    Novere

    ta D

    ivers

    ion B

    r.

    Novere

    ta B

    r.

    Yla

    ng-Yla

    ng B

    r.

    Longitudinal Profile of San Juan - Ylang-Ylang River (Plan)

    -10.000

    -5.000

    0.000

    5.000

    10.000

    15.000

    20.000

    25.000

    30.000

    35.000

    40.000

    0 2000 4000 6000 8000 10000 12000 14000 16000

    Distance from Rivermouth (m)

    Ele

    vation (

    m in M

    SL)

    Deepest Riverbed

    Left Bank

    Right Bank

    Design H.W.L

    Design Dike Level

    Design RiverbedMerging with

    San Juan River

    Nov

    ere

    ta D

    iver

    sio

    n B

    r.

    Nov

    ere

    ta B

    r.

    Yla

    ng-

    Yla

    ng B

    r.

    1/1,000

    1/270

    EL+0.8m

    EL+6.00m(Sta.6+000)

    EL+30.444m(Sta.12+600)

    NIA

    Can

    al

  • THE STUDY ONCOMPREHENSIVE FLOOD MITIGATION

    FOR CAVITE LOWLAND AREACTI Engineering International Co., Ltd

    Nippon Koei Co., Ltd

    Fig. 8.24

    Typical River Channel ImprovementPlan of San Juan River

    F - 8 - 24

    3,50

    0~4

    ,000

    2.00

    0

    3.000 7.500~8.000

    5.000 4.000 25.000 4.000 5.000 3.0007.500~8.000

    3.000 43.000~45.000 3.000

    3.000 4.000 25.000 4.000 3.000

    2.00

    04.

    367

    2+300

    Standard Cross-Section Linefor 20-year return period with on-site

    Standard Cross-Section Linefor 10-year return period with on-site

    Standard Cross-Section Line

    Excavation/Dredging

    Excavation/Dredging

    Embankment

    Embankment

    Standard Cross Section (Sta.0+000~Sta.1+700:Rivermouth Area : 400m3/s)(For All Alternatives)

    Standard Cross Section (Sta.1+700~Sta.4+800:Brgy. Sta. Isabel~Merging P.) : 600, 810 and 1050m3/s(For : Full Scaled Improvement)

    0+900

    (for 5-year return period)

    (Typical)

    (Typical)

  • Figures6.1 Location of Transfer Station and Sanitary Landfill Sites forNew Solid Waste Management System in Cavite Province8.1 Longitudinal Profile and Channel Width of Imus River (Present Condition)8.2 Longitudinal Profile and Channel Width of Julian River (Present Condition)8.3 Longitudinal Profile and Channel Width of Bacoor River(Present Condition8.4 Longitudinal Profile and Channel Width of San Juan River(Present Condition)8.5 Longitudinal Profile and Channel Width of Ylang-Ylang River(Present Condition)8.6 Longitudinal Profile and Channel Width of Canas River (Present Condition)8.7 Targeted River Stretch of River Channel Improvementfor 20-year Return Period Flood8.8 Proposed Sites for Off-site Flood Retarding Basins andOn-site Retention Ponds8.9 Proposed Alignment of San Juan Diversion Channel8.10 Conceived Structural Measures against Inland Flood based onCoastal Dike with Tidal Gates (Alternative D-1 : Full Protection)8.11 Conceived Structural Measures against Inland Flood based onRing Dike System (Alternative D-2 : Full Protection)8.12 Conceived Structural Measures against Inland Flood based onCoastal Dike with Tidal Gates (Alternative D-1 : Partial Protection)8.13 Conceived Structural Measures against Inland Flood based onRing Dike System (Alternative D-2 : Partial Protection)8.14 Design Discharge Distribution of Imus River Basin8.15 Design Discharge Distribution of San Juan River Basin8.16 Design Discharge Distribution of San Juan River Basin8.17 Design Discharge Distribution of San Juan River Basin8.18 Design Discharge Distribution for Inland Drainage Channel8.19 Design Longitudinal Profile of Imus and Bacoor/Julian River8.20 Typical River Channel Improvement Plan of Imus River8.21 Typical River Channel Improvement Plan of Bacoor River8.22 Typical River Channel Improvement Plan of Julian Ri8.23 Design Longitudinal Profile of San Juan and Ylang-Ylang River8.24 Typical River Channel Improvement Plan of San Juan River8.25 Layout Plan of Retarding Basin and Retention Pond (1/4)- in Imus River Basin8.26 Layout Plan of Retarding Basin and Retention Pond (2/4)- in/sround Imus River Basin