High-Piled Wharf Dredging Control Using Tidal Jet Disturbance
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Solution Overview
Problem
Current sediment dredging methods in port terminals, particularly in high-piled wharfs, face challenges such as difficulty in controlling dredging accuracy, significant impact on the surrounding water environment, inadaptability to deep siltation, and high maintenance costs.
Innovation Solution
An intelligent dredging system that employs a decentralized high-pressure water disturbance subsystem and an intelligent monitoring-decision control subsystem. The system uses high-pressure flushing devices to suspend and remove sediment before it consolidates, leveraging tidal flows for efficient sediment removal and integrating advanced monitoring and control systems for precise operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional dredging methods (cutter suction dredges, diving suction equipment) are used to remove sediment after consolidation, then sediment removal is achieved, but dredging accuracy cannot be controlled and environmental impact is significant
Solution Approach 1:
The system performs sediment flushing before consolidation occurs, using high-pressure water jets to suspend and remove sediment particles during the early flocculation stage when they are still loose and easily removable. This preliminary action prevents the need for later aggressive dredging operations that cause environmental damage.
Solution Approach 2:
The invention replaces mechanical dredging systems (cutter suction dredges, diving equipment) with a high-pressure water jet system that uses fluid dynamics to suspend and transport sediment. This substitution eliminates the need for heavy mechanical equipment that causes disturbance and environmental harm.
2Adaptability or versatility
If forced disturbance and pumping methods are used to remove consolidated sediment, then sediment removal is achieved, but the method is not adaptable to deep siltation and steep slopes
Solution Approach 1:
The system employs dynamic high-pressure water jets that can adjust their flow characteristics to adapt to varying sediment depths and slope conditions. The water jets dynamically suspend sediment particles and leverage tidal currents to transport them away, making the system adaptable to deep siltation and steep slopes where static mechanical methods fail.
Solution Approach 2:
The invention uses high-pressure hydraulic jets to fluidize and suspend sediment particles, converting solid sediment into a fluid-like slurry that can be easily transported by water currents. This hydraulic approach overcomes the limitations of mechanical methods in deep and steep environments.
3Productivity
If small cutter suction dredging platforms are used, then high dredging efficiency per hour and large excavation depth are achieved, but effective operation time is short and cost is high
Solution Approach 1:
By flushing sediment during the early flocculation stage before consolidation, the system prevents severe siltation from developing, thereby maintaining consistent dredging efficiency over extended periods. This eliminates the cyclical pattern of intensive dredging followed by idle time, maximizing effective operation time.
Solution Approach 2:
The system leverages natural tidal currents to transport suspended sediment away from the wharf area, eliminating the need for energy-intensive pumping operations. This self-service approach using natural water flow extends operational continuity and reduces costs.
4Loss of substance
If dredging is performed after sediment consolidation, then sediment removal is achieved, but maintenance cost is expensive
Solution Approach 1:
The system performs preventive flushing during the early flocculation stage, stopping sediment accumulation before it consolidates and requires expensive removal. This preliminary intervention dramatically reduces maintenance frequency and costs by preventing severe siltation from developing in the first place.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves accurate, efficient, and cost-effective sediment removal with minimal environmental impact, enabling preventive active dredging rather than reactive passive dredging, thus reducing maintenance costs and enhancing ecological benefits.
Implementation Method 1
uses a distributed high-pressure flushing device to suspend the silted sediment
Implementation Method 2
utilizing the natural flow of rising and falling tides
Data Source
AI summary
An intelligent dredging system for a high-piled wharf and a control method thereof are provided, and the system includes an intelligent monitoring-decision control subsystem and a decentralized high-pressure water disturbance subsystem. The intelligent monitoring-decision control subsystem is composed of a high-precision pile-foundation sediment siltation warning device, a tidal monitoring device and a control terminal. The decentralized high-pressure water disturbance subsystem is composed of a water spraying device, a cable and a multi-loop power distribution device.