Views: 0 Author: Site Editor Publish Time: 2025-10-23 Origin: Site
The iTECH Dredger 200 is a compact cutter suction dredger (CSD) designed for a range of inland and near-shore dredging projects. Engineered for efficiency and operational simplicity, this model serves applications in land reclamation, river maintenance, pond cleanup, and sand mining in areas with limited accessibility. This document provides a technical overview of its key components, performance parameters, and typical use cases, supported by relevant data.
1. Design Philosophy and Primary Applications
The Dredger 200 is built around the principle of providing a balanced combination of dredging depth, production capacity, and mobility. Its modular design allows for relatively straightforward transport and assembly on-site. Primary applications include:
River Widening and Desilting: Removing sediment to restore watercourse capacity and improve navigation.
Land Reclamation: Providing fill material for coastal and inland development projects.
Reservoir and Pond Maintenance: Excavating accumulated silt and organic matter to maintain storage volume and water quality.
Sand and Gravel Mining: Extracting aggregate materials from designated deposits.
2. Key Components and Technical Specifications
A cutter suction dredger operates by using a mechanically driven cutter head to loosen underwater material, which is then transported as a slurry via a centrifugal pump through a pipeline to a discharge area.
Main Dredge Pump:
The heart of the Dredger 200 is its robust centrifugal dredge pump.
Type: Centrifugal, gravel/sand lined for abrasion resistance.
Inlet/Outlet Diameter: 200 mm
Drive Power: Typically powered by a 150 kW diesel engine or an electric motor of equivalent power.
Cutter Head:
The cutter head is designed to fragment the in-situ material.
Type: Available in various configurations (e.g., standard, ripper, california) to match soil conditions from loose sand to compacted clay.
Drive Power: Independently powered by a 45 kW hydraulic system.
Swing Speed: Variable, controlled for optimal cutting efficiency.
Ladder and Dredging Depth:
Maximum Dredging Depth: Adjustable, with a standard maximum depth of 6 meters. Custom ladder lengths can be engineered for specific requirements.
Spud System and Swing Mechanism:
The dredger uses a spud system for advancement and a swing mechanism to cover the dredging width.
Swin System: Hydraulically operated, using wire ropes and winches.
Spuds: Typically two spuds (a working spud and a walking spud) allow the dredger to pivot and advance through the work area.
3. Performance Parameters
The production capacity of the Dredger 200 is highly dependent on the material being dredged, the pumping distance, and the lift required. The following table provides estimated production ranges under specific conditions.
Table 1: Estimated Production Capacity of iTECH Dredger 200
(Based on a mixture of sand and water with a specific gravity of 1.2, and a total pipeline length of < 500m)
| Material Type | Approximate In-Situ Density (kg/m³) | Estimated Production Range (m³/hr) |
|---|---|---|
| Sand | 1,800 - 2,000 | 80 - 120 |
| Sandy Silt | 1,600 - 1,800 | 70 - 100 |
| Soft Clay | 1,700 - 1,900 | 50 - 80 |
Note: These figures are for reference. Actual production can vary significantly based on actual material density, pipeline configuration, and operational skill.
4. Auxiliary Systems and Operational Features
Winches: A set of hydraulic winches control the positioning of the cutter head, the swing wires, and the spuds.
Control System: The Dredger 200 can be equipped with a basic manual control station or an optional centralized PLC-based control system for improved operational control and monitoring.
Flotation: The main hull and pontoons provide stable flotation, typically constructed from carbon steel with reinforced internal structures.
5. Conclusion
The iTECH Dredger 200 represents a practical and efficient solution for small to medium-scale dredging operations. Its design prioritizes reliability and ease of operation in diverse material conditions. With a standard dredging depth of up to 6 meters and a production capacity that can exceed 100 cubic meters per hour in favorable conditions, it is a suitable asset for contractors and project developers requiring a dedicated, mobile dredging unit. The specific performance and configuration can be tailored to meet the precise requirements of a given project.
Reference
Bray, R. N. (2008). Environmental Aspects of Dredging. Taylor & Francis.
Turner, T. M. (1996). Fundamentals of Hydraulic Dredging. ASCE Press.
iTECH Dredging Solutions. (2023). Dredger 200 Series Technical Manual.
International Association of Dredging Companies (IADC). (2020). Dredging for Development. IADC/CEDA.
