Pan Hlaing River Integrated Development Plan - gwp.org · require flushing/maintenance dredging ... April 2016 • Feasibility study • PHRIDP and recommendation sluice location

Pan Hlaing River Integrated Development Plan Global Water Partnership, Yangon

Alwin Commandeur 1 June 2017 Open

Pan Hlaing River Integrated Development Plan | 1 June 2017

RHDHV in Myanmar

Experience working on maritime, industry and water projects in Myanmar since 1986. 30+

years

Through project experience and due to majority local team.

Reputation

Re- established a branch office in Yangon in 2013 and formed a legal entity in 2015. 4 years

Strong and energetic local team working from office and on various construction sites. 30 people

Unrivalled local track record, reputation and network in Myanmar.

Local knowledge

Pan Hlaing River Integrated Development Plan | 1 June 2017 3

Sluice gate


Feasibility Study of Pan Hlaing Sluice Pan Hlaing River Integral Development Plan (PHRIDP) Flood protection Water supply for agriculture and irrigation Socio-economical developments Pan Hlaing River area Sluice complex sketch design in the Pan Hlaing River

In close collaboration with stakeholders Supervise Geotechnical Investigation work Capacity Building at local Universities

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Site visit May 2015

Pan Hlaing River Integrated Development Plan | 1 June 2017 5 Cofferdam

375 m

Pan Hlaing Bridge

upstream

Meazli Sluice

mouth

Kokowa river

downstream

Pan Hlaing River Overview


Interest and Future Developments

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Challenges and Sluice gate locations

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Sluice gate Locations?


Approach

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• Help practitioners with implementing comparable projects

• Describe tools and approaches that can be used

• Describe lessons learnt • Approaches and tools

illustrated by application of Learning-by-Doing projects

• Links to sources for more information

Fact-sheets & Co-design approach


Fact-sheets & Co-design approach Graduate students Yangon Technological University and

Myanmar Maritime University help with filling the factsheet, based on guest lectures and excursion.

Motivation: Maximize knowledge uptake by Myanmar partners Promote understanding of used tools, approaches Exposure to practice for students to increase popularity IWRM

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View of Pan Hlaing River in dry season

Silt deposition in Pan Hlaing River at U/S of highway bridge (Low tide)

Silt deposition in Pan Hlaing River at U/S of highway bridge (Low tide)

Sedimentation Processes


La Mu

Sedimentation in the middle of the reach


February 2003 January 2010

December 2010 February 2014

Sedimentation in the middle of the reach


Salinity front (maximum 2013-2014)

Low river flow (March)

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Salt intrusion Relevant parameters for saltwater wedge: Water depth (large depth, further intrusion) Fresh water discharge (pushes back salt wedge) Estuarine mixing

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Sedimentation processes at salt wedge

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(image courtesy of Dong Yoon Lee, Virginia Commonwealth University)


Sedimentation processes

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Pan Hlaing River sediments

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Mud deposits (50% clay + 50% silt)


Excavations by IWUMD

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1D SOBEK Model

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October 2015

Closure of the channel for passage

Made use of a basic model to explain why this sedimentation happened


1D SOBEK Model

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Lateral inflow (irrigation/drainage)


Model Outcomes

-4

-3

-2

-1

0

1

2

3

4

0 0.5 1 1.5 2 2.5 3 3.5 4

Wat

er le

vel (

m)

Time (days)

Tides

Tides dominant force “Sediment pumping” by tides Reduced tidal damping (floods)

Considerations Impacts of sluices (opening and closing) Input of sediment from Kokowa River / or

flushing of deposited sediments


Natural system Significant sedimentation (significant

salt intrusion) Limited fresh water in dry season Significant limitations for agriculture,

residential and industry Improve above for Yangon’s ambitions

in agriculture and city development

Salt intrusion / sedimentation • Can be addressed by sluice • Sedimentation in front of sluice may

require flushing/maintenance dredging • Gate location preferred close to river

mouth Water balance aspects

• Estimated water demand may just be met • Water supply important • Increased water supply will be challenging • Large retention area preferred sluice

closer to river mouth Drainage

• Controlled water levels expected to limit flood events

• Drainage capacity sufficient • Large retention area preferred sluice

closer to river mouth


Stakeholder Analysis

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Irrigation Department (ID) river section designed under the scope of

irrigation and drainage functions

suggests that by-pass channel and pipe

pumping (to Hlaing River) for waste water

discharging from industrial zones

supply the fresh water for agricultural

development scheme and Industrial zone

prevent the sea water intrusion (saline

water) and siltation problem

Hlaing Thar Yar Industrial Zone want to use Pan Hlaing River as

transport route until PH bridge worry about water quality with the lack of

proper treatment system from the zone want to have fresh water supply propose to locate the sluice gate near

the Pan Haling Bridge with navigability

Pan Hlaing Golf Course Estate Concern that existing free board of

the flood gate would be insufficient later

the best location of public access should be at the location of existing coffer dam.


Yangon City Development Committee (YCDC) has a conceptual new town plan on

4,745 hectares defined by boundaries between Pan Hlaing River, Twante Canal and Hlaingtharyar -Twante Road.

Water supply for this new city from Pan Hlaing River - potential solution.

to add bridge in sluice design to link the new town with existing Yangon city

Farmers and Residents living along the River generally satisfied with the excavation works continuous access to fresh water improves their

well-being worried about flood & drainage willing to continue to use the river for

transportation after the project want to get fresh water for drinking and

domestic uses increase their agricultural production

Other Stakeholders General Administration Department

Settlement and Land Record

Department (Htantapin)

concerned of degradation of land and

pollution of the Pan Hlaing River

water, leading to reduction of fish

production.

Stakeholder Analysis


Overview PHRIDP

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Overview PHRIDP


Sluice location options


Sluice location recommendation


Myanmar & Water

“Water symbolizes purity, clarity and calmness, and reminds us to cleanse our minds and attain the state

of purity” (Buddism)

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http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCKDp4s64tcgCFQu_cgodR_wPjA&url=http://www.airpano.com/360Degree-VirtualTour.php?3D=shwedagon-pagoda-myanmar&bvm=bv.104615367,d.bGQ&psig=AFQjCNG9V6dNH2idWcoTxlUkmOunXWru5g&ust=1444481909797290


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http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCND-gvyotcgCFcirGgodez0OOg&url=http://www.frenchmoments.eu/grande-arche-de-la-defense/&bvm=bv.104615367,d.bGQ&psig=AFQjCNH7odY0vu6aXdThNp_x_Dobpu2HZg&ust=1444477675280068

http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCKDp4s64tcgCFQu_cgodR_wPjA&url=http://www.airpano.com/360Degree-VirtualTour.php?3D=shwedagon-pagoda-myanmar&bvm=bv.104615367,d.bGQ&psig=AFQjCNG9V6dNH2idWcoTxlUkmOunXWru5g&ust=1444481909797290

https://upload.wikimedia.org/wikipedia/commons/a/a3/Shanghai_oriental_pearl_tower.JPG


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http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCKD4uKjsvcgCFYHbGgodrl4PuQ&url=http://ngm.nationalgeographic.com/2011/12/city-solutions/city-solutions-photography&bvm=bv.104819420,d.d2s&psig=AFQjCNGJBUehXfWCD4SegSJjCcLRIvoigg&ust=1444770621428137



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http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCKqfqrvxvcgCFcW4GgodBzAJpQ&url=http://www.minimalisti.com/architecture/01/minimalist-architect-tadao-ando.html&bvm=bv.104819420,d.bGg&psig=AFQjCNH_8iFx6qKE9AJGf5RkWji5j6a9iA&ust=1444772030488279

http://www.google.nl/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRxqFQoTCMb5oIf0vcgCFcHbGgodhLYHsA&url=http://theprosaictraveller.com/tag/parkbench/&psig=AFQjCNHk9sa5FqTXs99ZdSsPehjVhGovXA&ust=1444772741504938


Sluice design and construction phases (initial planning)

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Aug. 2015 April 2016

• Feasibility study • PHRIDP and recommendation sluice location

April 2016 Febr. 2017

• Investigations; • Bathymetrical, topographic, geotechnical, • Water, flow and sedimentation measurements

• Final & detailed design • Tender documents

Febr. 2017 End 2019

• Contracting • Construction phase

This project


linkedin.com/company/royal-haskoningdhv

@RHDHV

facebook.com/RoyalHaskoningDHV

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Thank you for your attention! For more info, please contact me: [email protected]

Pan Hlaing River Integrated Development Plan Global Water Partnership, Yangon Alwin Commandeur 1 June 2017 Open

Documents

Pan Hlaing River Integrated Development Plan - gwp.org · require flushing/maintenance dredging ... April 2016 • Feasibility study • PHRIDP and recommendation sluice location