challenges of the panama canal expansion dredging...
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Challengesof the
Panama Canal ExpansionDredging Plan
ChallengesChallengesofof thethe
PanamaPanama Canal Canal ExpansionExpansionDredgingDredging PlanPlan
Will Quinby, P.E., Program Management Advisor
Dredging/Dry Excavation
20 May 2008
Will Quinby, P.E., Program Management Advisor
Dredging/Dry Excavation
20 May 2008
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A Unique ProgramA Unique ProgramCutting a new channel through hills to a new
set of LocksDredging through the Continental Divide
Cutting a new channel through hills to a new set of Locks
Dredging through the Continental Divide
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Expansion Program Dredging ScopeEntrance Channels
PacificAtlantic
Freshwater DredgingGatun LakePacific Access Channel/Dry ExcavationGaillard/Culebra Cut
Lessons
Expansion Program Dredging ScopeEntrance Channels
PacificAtlantic
Freshwater DredgingGatun LakePacific Access Channel/Dry ExcavationGaillard/Culebra Cut
Lessons
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PACIFIC ENTRANCE CHANNELPACIFIC ENTRANCE CHANNEL
Total dredging volume = 9.1 M m3
Pacific southern approach channel = 2.5 M m3
Pacific entrance deepening andwidening = 6.6 M m3
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PACIFIC ENTRANCE CHANNEL DESCRIPTION
PACIFIC ENTRANCE CHANNEL DESCRIPTION
Widening from 192 m to a minimum 225 mDeepening from -14.2 m to -15.5 m MLWSTotal est. volume: 9.1 M m3 Length 14.4 KmAward: 31 March 2008Estimated Start: July 2008Duration: 4 years
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PACIFIC SOUTH APPROACH CHANNEL
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PACIFIC ENTRANCE DREDGINGNORTHEN SECTOR
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PACIFIC ENTRANCE DREDGINGSOUTHERN SECTOR
PACIFIC ENTRANCE DREDGINGSOUTHERN SECTOR
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PACIFIC ENTRANCE CHANNELDREDGED MATERIAL DISPOSALPACIFIC ENTRANCE CHANNEL
DREDGED MATERIAL DISPOSAL
8,652,588TORTOLITA SOUTH(Open Water)
7,313,678TORTOLITA (Open Water)
1,492,811PALO SECO(Open Water)
3,657,280FARFAN(Upland)
2,294,000VELASQUEZ(Upland)
CapacityArea/Type
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ATLANTIC ENTRANCE CHANNEL
Total estimated Atlantic Dredgingvolume 26.6 to 30.7 M m3
Atlantic NorthernAnchoragedeepening
12.6 to 16.7 M m3
Atlantic Northernaccess channel =
7 M m3
Atlantic Entrancedeepening and
widening = 7 M m3
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Atlantic Entrance1 Contract
• Widening from 192 m to a minimum 225 m• Deepen: -14.2 m MLW. to -15.5 m MLW.• Dredging = 14 M m3• Dry excavation = 1 M m3• Total:15 Mm3 (Million cubic meters)• Material: mud, silt, clay and sand
•Approach Channel: Hardness <15 Mpa.
Atlantic Entrance1 Contract
• Widening from 192 m to a minimum 225 m• Deepen: -14.2 m MLW. to -15.5 m MLW.• Dredging = 14 M m3• Dry excavation = 1 M m3• Total:15 Mm3 (Million cubic meters)• Material: mud, silt, clay and sand
•Approach Channel: Hardness <15 Mpa.
Width: 225m (740´) ▶Width: 225m (740´) ▶
THE ATLANTIC ENTRANCE AND NORTH APPROACH CHANNEL
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ATLANTIC ENTRANCEATLANTIC ENTRANCE
15.52184NORTH APPROACHCHANNEL
15.5225 / 2609.80ATLANTICENTRANCE
DESIGN DEPTH (m)
CHANNELWIDTH
(m)
LENGTH (km)SECTION
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Freshwater DredgingFreshwater Dredging
Gatun Lake
Pacific Access Channel Dredging
Gaillard/Culebra Cut
Gatun Lake
Pacific Access Channel Dredging
Gaillard/Culebra Cut
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FRESHWATER DREDGING VOLUMES
13 MSubtotal0.4Intermediate Plug (Pacific Locks)0.5North Plug (Pacific Locks)3.2Pacific Access Channel (FFP contract)3.8Charter Option (Equipment Rental)5.1Gatún Lake North (FFP contract)
CONTRACTS14 MSubtotal3.3Gaillard Cut10.7Gatún LakeM m3ACP RESOURCES
Grand Total Freshwater Dredging 27 M m3
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Gatún Lake
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Fixed Price Contract:
• 5 M m3, from Gatún to Buena Vista Reach.
• Option: 2.5M m3 Mechanical Dredging in other reaches• Includes island removal, drilling & blasting, dry excavation
Estimated Award : February 2009Estimated Start: June 2009Estimated Completion: October 2013
Gatún Gatún LakeLake
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PacificPacific Access Access ChannelChannel
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Dry ExcavationDry Excavation
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Pacific Access ChannelSequence of Excavation
PAC. No.5
PAC. No.2
PAC. No.4
PAC. No.3
PAC. No.1
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FixedFixed PricePrice Contract: Contract: •• 3.2 M m3.2 M m33, , northnorth endend ofof thethe Access Access ChannelChannel toto thethe PacificPacific LocksLocks
•• EstimatedEstimated AwardAward : Feb 2009: Feb 2009•• EstEst. . StartStart: : JuneJune 20092009•• EstEst CompletionCompletion: May 2011: May 2011
Pacific Access Channel Dredging
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The Gaillard/Culebra CutThe Gaillard/Culebra Cut
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Dredging in the CutDredging in the CutSignificant operating restrictionsLimited disposal areas for hydraulic dredging: ACP’s New Cutter
Suction Dredge maximum operating rangeDisposal Elevation above water level ranges from 10 to 130 m. ANAM (Environmental Requirements)Cycle times for mechanical dredging range from 2 to 6 hours
UXO Cucaracha
Bas ObispoN
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SlidesSlides
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SlidesSlides
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SlidesSlides
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Dredging Lessons Dredging Lessons Programs must be viewed as Programs – Not a collection of independent Projects
- Master Program Schedule
Dredged Material Disposal Areas are not the sexiest part of an Authority’s portfolio
Nevertheless, a competent party must be assigned the responsibility to survey, permit, maintain, and manage these resources
Programs must be viewed as Programs – Not a collection of independent Projects
- Master Program Schedule
Dredged Material Disposal Areas are not the sexiest part of an Authority’s portfolio
Nevertheless, a competent party must be assigned the responsibility to survey, permit, maintain, and manage these resources
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Dredging Lessons Dredging Lessons Marshalling the resources to execute a major program takes time. Start early acquiring:
Geophysical investigations/SurveysDredging EquipmentSupport Equipment and Personnel (Pilots, tug captains)
Contract Scopes of Work, Bidding Time, MobilizationPartnering with Pilots, Port Interests, Environmental Agencies, Contractors can have significant beneficial impacts to a dredging program. Interference = RiskImpacts of Fuel Prices, Foreign Exchange, and the world dredging market can pose significant risks
Marshalling the resources to execute a major program takes time. Start early acquiring:
Geophysical investigations/SurveysDredging EquipmentSupport Equipment and Personnel (Pilots, tug captains)
Contract Scopes of Work, Bidding Time, MobilizationPartnering with Pilots, Port Interests, Environmental Agencies, Contractors can have significant beneficial impacts to a dredging program. Interference = RiskImpacts of Fuel Prices, Foreign Exchange, and the world dredging market can pose significant risks
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CONCLUSIONCONCLUSION
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QUESTIONS?QUESTIONS?