Sand Bypassing Projects
Ecuador Iron Sand Recovery Systems, Ecuador
A concept study commissioned by South American Iron and Steel Limited to investigate iron sand recovery from two proposed sand bypassing systems.
Adelaide’s Living Beaches Sand Transfer Infrastructure, Australia
Design direction and assistance commissioned by McConnell Dowell Constructors for the design the sand transfer infrastructure project for Adelaide’s Living Beaches Project. The project includes two sections of underground pipeline to pump sand south to restore eroded areas.
Sand recovered from two source beaches using mobile equipment will be slurried using a mobile sand collection unit and pumped to a range of outlets located in eroding areas. The 300mm diameter pipeline includes five underground pump stations. Water for the sand collection unit is supplied from two water pump stations attached to existing structures. The system can transfer sand with a mean diameter up to 1.00mm and includes a sediment analyser to control the operation; the control system will automatically vary the pumped slurry density to maximise the throughput for the sediment being pumped.
Esmeraldas Sediment Recovery System, Ecuador
A concept study commissioned by South American Iron and Steel Limited to investigate recovery of iron sands from deep coastal and alluvial deposits.
Acu Sand Bypassing System, Brazil
A study commissioned by LLX Açu to undertake a concept design of a sand bypassing system to maintain the shoreline adjacent to a new offshore bulk products port and adjacent inland general products port that are under construction at Açu in Rio de Janeiro State, Brazil. The shoreline where the ports are being constructed is unstable with ongoing shore erosion issues in the existing coastal townships.
The proposed sand bypassing system will transfer sand along the shoreline in either direction over a length of 9.5km. Sand recovered from accumulating areas using mobile equipment will be slurried using portable sand collection units and pumped by the proposed sand bypassing system to outlets located in eroding areas. The system will be able to recover sand or deposit sand at any point along the length of the pipeline.
Apart from the mobile sand collection units, the system will comprise three permanent booster pump stations located along the pipeline. A separate pipeline will supply water to the sand collection units for the process, pumped from the inland port. The system will have the capacity to transfer at up to 120,000m3 per month of insitu sand.
Fukude Fishing Port, Japan
A concept design of a sand bypassing system, design of a jet pump for the system, supply and demonstration testing of a jet pump and numerical modeling of littoral movements around Fukude Port.
Jimmy’s Beach, New South Wales
A conceptual design for the Great Lakes Shire Council for a sand restoration system to provide beach nourishment.
A number of alternatives ranging from a conventional dredge to an automated jet pump system were investigated.
The conventional dredging option at intervals of several years was recommended by Cardno and implemented by Council.
Gold Coast Back Passing System, Australia
Assistance to the Gold Coast City Council in the preliminary design of a permanent back passing facility that would pump sand recovered by the Gold Coast Seaway sand bypassing system 8km south through the streets of Gold Coast City to replenish Surfers Paradise Beaches.
The proposed system will comprise a 400mm diameter pipeline and two underground booster pump stations. The first booster pump station will be equipped to accept sand slurry from a dredger undertaking maintenance dredging in the Broadwater. Sand will be discharged through several outlets along the last 1km of pipeline.
Wanganui Port, New Zealand
A feasibility study of a sand bypassing system for the port to control a sand bar which had built up across the entrance and was limiting the port usage.
The study covered the feasibility, layout, construction cost and operating cost of a suitable fixed sand bypassing system.
Barra do Furado, Brazil
A concept design commissioned by Quissama and Campos Counties for a sand bypassing system at the Barra do Furado Entrance in Brazil. The system is being designed and constructed at present.
The system will comprise a 360m long jetty supporting 9 jet pumps, a high pressure pumping station, low pressure pumping station and a submarine pipeline under the entrance discharging onto the beach on the updrift side.
Gold Coast Seaway (Nerang River Entrance) Sand Bypassing System
The concept design and construction supervision of the sand bypassing system consisting of a 490 metre long jetty across the beach into the ocean containing 10 jet pumps, a high pressure pump station, low pressure pump station and a submarine pipeline under the Gold Coast Seaway discharging into the northern beach.
Murray River Mouth Sand Bypassing System, Australia
A concept study of a proposed sand bypassing system to stabilize the mouth of the Murray River.
Pondicherry Port Sand Bypassing System, India
A pre-feasibility study for the inclusion of a sand bypassing system in the design for a proposed new port at Pondicherry, India.
This study showed that inclusion of a sand bypassing system would improve the port operations. This project will proceed when the Indian economy improves.
Tweed River Sand Bypassing System
The concept design, detail design and certification of construction of the sand bypassing system including 450m long jetty across the beach to the ocean, eleven (11) jet pumps, intake pump station and distribution pipeline under the Tweed River discharging to the Gold Coast beaches. The project was designed to provide a manageable entrance into Tweed River.
The project was implemented under a 25 year BOOT (Build, Own, Operate and Transfer) contract with the Governments of Queensland and New South Wales.
The construction cost was approximately $25 million.
Port of Portland, Victoria
A review for the Port of Portland Pty Ltd of the existing situation at the port of Portland and to advise on the options for construction of a permanent sand bypassing system.
Several options ranging from a portable sand shifter to a fixed trestle jetty carrying a series of jet pumps were investigated. A permanent sand bypassing system was recommended and the feasibility, layout and construction cost of a suitable fixed sand bypassing system determined.