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Port Development & Logistics
Dredging the Banjarmasin Port Access Channel
by
Van Oord Dredging & Marine Contractors bv
Peter van der Hulst 10 Oct 2011
Introduction
•Project Location
•Why to dredge the Barito River Access Channel
•Design Considerations
•Channel lay-out
•Result Capital Dredging
South Kalimantan
Banjarmasin
Project Location / Description
• Located at Barito River Mouth, Banjarmasin
• Channel very shallow, with high siltation rate
• Channel difficult to navigate
Requirement:
• Channel 15 km long; 100mtr wide; 6mtr deep
• Volume to be dredged: 6,000,000 cub mtr
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Why dredge the Barito River AccessChannel?
• Busiest water passage for commodity transportation inSouth Kalimantan
• Many delays experienced by transport barges
• High unnecessary consumption of fuel
• Only access during high tide (depth < 3mtr at low tide)
• Only one-way traffic for 6-8 hrs/day
• In-efficient use of available transport capacity
• Improve future throughput capacity
Design Considerations
• Siltation
– Estimated at 5,000,000m3 yr
– 80% occurs during monsoon
– Coming from upstream channel
– Encroaching Western bank
• Capacity of Channel
– Before; some 40 million tonnes / year
– Desired capacity 120 million tonnes / year
Design Considerations
• Barge Sizes
– Barges upto 12,500 dwt
– Draft of barges upto 6.1 mtr
• Channel dimensions
– Base width of 100mtr allows two-way traffic flow
– Depth of -6.0mtr LAT allows vessels to navigatechannel in all tidal conditions
Channel lay-out options
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Design Considerations – Cross Section Results Capital Dredging
• A straight channel, allowing easier navigation
• Channel completed on time and within budget
• New two-lane channel will allow vessel access 24hrsper day
• Larger vessels will be able to pass through channel
• First successful trial with barges before handover
Convoy with first barges on 15th Oct 2008
Thank You
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