Excavation Self-elevating Platform

Shandong Haiding Shipbuilding Co., Ltd. is an experienced China factory, manufacturer, and global supplier of Excavation Self-elevating Platform, serving international buyers for many years. HAIDING SHIPYARD  Excavation Self-elevating Platform is a heavy-duty excavation equipment designed for 3-100m marine water depth, with spud leg design length of 10-90m and total platform load capacity of 3000 tons. It is core-equipped with a 200-ton class full-hydraulic underwater excavator, focusing on four tasks: deep-sea waterway dredging, seabed earth-rock excavation, artificial island foundation leveling, and seabed obstacle clearance. Aiming at the pain points of marine excavation such as "difficult depth control, low operation accuracy, and strong interference from complex sea conditions", it realizes stable excavation operations from shallow sea to deep sea through high-precision excavation positioning (±0.3m), full-automatic platform leveling (±0.1°), and wind-wave resistant excavation system (Grade 11 wind resistance). The daily excavation volume reaches 5000m³, with efficiency 30% higher than traditional dredgers, providing a "high-precision, high-efficiency, high-stability" excavation solution for marine engineering.

Core Advantages

Heavy-duty Excavation Equipment Integration, High Operation Efficiency

200-ton Class Underwater Excavator: HAIDING SHIPYARD  Excavation Self-elevating Platform equipped with a full-hydraulic rotating underwater excavator (maximum excavation radius 18m, bucket capacity 8-12m³), which can realize 360° all-round excavation, with maximum underwater excavation depth ≥30m, adapting to complex geology such as clay layers and sand-gravel layers; the excavator adopts a dual-pump confluence hydraulic system, with excavation force up to 350kN, single excavation volume ≥10m³, and daily earth-rock excavation volume up to 5000m³;

Excavation-Transfer Integration: The platform is equipped with 2 material transfer cabins (total volume 500m³), and the earth and rock excavated by the excavator can be directly transferred to the cabins. After the cabins are full, they are transferred by transport ships, reducing the waiting time for excavation-transfer, and the operation efficiency is 25% higher than the traditional "dredger + transport ship" combination.

High-precision Control, High Excavation Accuracy

3D Excavation Positioning: HAIDING SHIPYARD  Excavation Self-elevating Platform equipped with GPS+Beidou dual positioning system (positioning accuracy ≤0.5m) and underwater sonar depth detector (accuracy ±0.1m), real-time monitoring the position of the excavator bucket teeth and excavation depth, ensuring the flatness error of the excavation surface ≤0.3m, meeting the precise excavation needs of artificial island foundations and waterway slopes;

Platform Stability Compensation: HAIDING SHIPYARD  Excavation Self-elevating Platform adopts a dual-axis inclination sensor (accuracy ±0.05°), when the platform tilts due to wind and waves, the full-automatic leveling system adjusts the spud leg lifting in real time (adjustment accuracy ±0.1m), ensuring the platform level error ≤0.1° during the excavator operation, avoiding excavation depth deviation caused by platform shaking.

Full Water Depth Adaptation, High Tolerance to Complex Geology & Sea Conditions

Spud Leg & Excavation Adaptation: HAIDING SHIPYARD  Excavation Self-elevating Platform adopts 3 sectional truss spud legs (diameter 2.5-3.0m) with customizable length of 10-90m, adapting to 3-100m water depth: 10-30m short legs for shallow sea (3-20m), 30-60m medium legs for medium sea (20-50m), 60-90m long legs for deep sea (50-100m); spud cans adopt anti-slip design (contact area ≥60㎡) to prevent sliding on sandy seabeds;

Harsh Environment Protection: The platform has Grade 11 wind resistance, ≤5m wave resistance height, and ≤2 knots current resistance speed. The excavator is equipped with a waterproof sealing system (protection grade IP68) and anti-clogging device, which can operate in sea areas with high sediment content such as the Yangtze River Estuary and Pearl River Estuary, and can also continue excavation during the South China Sea monsoon period to ensure project progress.

Modular Deployment, Convenient Operation & Maintenance

Sectional Transportation & Assembly: The platform of the HAIDING SHIPYARD  Excavation Self-elevating Platform is split into 5-7 sections (main platform section, spud leg section, excavator unit section) with maximum single section weight ≤100 tons, which can be transported to global sea areas by ocean-going barges and semi-submersible ships; on-site assembly is completed with flanges + high-strength bolts, and can be finished in 8-12 days with marine floating cranes, 40% shorter than the deployment cycle of traditional dredgers;

Modular Maintenance of Excavation Equipment: The excavator hydraulic pump and arm cylinder adopt modular design, which can be disassembled and replaced as a whole in case of failure, reducing maintenance time to 10 hours/time; the spud leg rack is made of NM500 wear-resistant steel (hardness ≥500HB) with a service life ≥20 years in deep-sea environment, without frequent replacement.

Detailed Technical Parameters

Core Application Scenarios

Deep-sea Waterway Dredging

In the main channels of the Bohai Bay and the coastal areas of the Yangtze River Delta, excavate the silting layers on the slopes and bottoms of waterways with a depth of 15-30 meters. Ensure the water depth meets the navigation requirements of 100,000-ton cargo ships through high-precision depth control. The anti-silting device of the excavator can handle silting layers with a sand content of ≥30%, achieving a daily dredging volume of 4000m³.

For the branch channels of the Yangtze River and the Pearl River Delta, excavate navigable channels with a width of 20-50 meters. The shallow draft design of the platform (1.0-2.0 meters when unloaded) allows it to access shallow-water branches, and the excavation precision ensures that the slope gradient error of the channel is ≤1:5.

Artificial Island Construction

During the construction of artificial islands in the South China Sea and the East China Sea, excavate foundation pits on the seabed with a depth of 10-20 meters, with a flatness error ≤0.3m, providing a flat foundation for land reclamation of artificial islands. The excavated earth and rock can be directly filled into the island area, realizing the "excavation - backfilling" recycling and reducing project costs.

Excavate the foundation trench at the bottom of the breakwater of the artificial island (depth 5-15 meters), ensuring that the flatness and depth of the trench meet the design requirements, providing an accurate foundation for the installation of breakwater caissons and preventing caisson tilting.

Seabed Obstacle Clearance

Remove abandoned piles (diameter 1-3 meters, buried depth 5-10 meters) in ports and waterways. The excavator of the HAIDING SHIPYARD  Excavation Self-elevating Platform is equipped with a hydraulic breaker to crush concrete piles before excavation and removal, capable of removing 5-8 piles per day.

Clear the wreckage of sunken ships (weighing 50-200 tons) in the sea area. The excavator uses multi-point hoisting in conjunction with excavation to break up the wreckage and transfer it to a transport ship, ensuring the navigational safety of the waterway.

Marine Engineering Foundation Excavation

During the construction of cross-sea bridges such as the Qiongzhou Strait Bridge and the Hangzhou Bay Bridge, excavate pile foundation pits with a diameter of 8-15 meters and a depth of 10-25 meters. The excavation precision ensures that the verticality deviation of the foundation pit is ≤0.5‰, providing an accurate space for bridge pile foundation pouring.

For the single-pile foundations of offshore wind turbines, excavate foundation pits with a diameter of 6-10 meters and a depth of 5-15 meters. The stable working surface of the platform avoids wind and wave interference, ensuring that the foundation pit dimensions meet the installation requirements.

Customization Services

Parameter & Function Customization: Adjust spud leg length (up to 90m) and excavator configuration (e.g., upgrading to 300-ton class excavator, adding hydraulic breaker) according to operation scenarios; add spud leg ice-breaking devices and platform insulation systems for polar sea areas; upgrade excavator bucket tooth material (using wear-resistant alloy) for high-hardness rock formations;

Value-Added Services: Assist in handling international classification certification (ABS/CCS/DNV) and marine excavation operation permits for the platform; provide excavation plan design (e.g., foundation pit excavation path planning, geological adaptation suggestions); connect with marine engineering construction teams to provide "platform + excavation + transportation" integrated services, ensuring efficient completion of excavation tasks.