Silt prevention system behind and below the wharf with control device

Abstract

A silt prevention system for the rear and below of a wharf in the field of dredging engineering technology, comprising a movable plate, an upper fixing body, a movable rotating body, a lower support body, a high-pressure flushing pipeline, high-pressure nozzles, a high-pressure water tank, a high-pressure flexible pipe, a high-pressure water pump, a flow velocity meter, a control system, and a sand collector; the upper fixing body is connected to the lower support body, the lower support body is located at the lower end of the upper fixing body, and the movable plate is connected to the upper fixing body through the movable rotating body; a plurality of high-pressure water tanks are installed on the movable plate, and a plurality of high-pressure nozzles are arranged on each high-pressure water tank; the flow velocity meter and the sand collector are both arranged in the harbor basin of the target wharf; the flow velocity meter, the sand collector, and the high-pressure water pump are all connected to the control system through wire harnesses. The present invention is based on the theory of fluid mechanics and the mechanism of sediment movement mechanics, fundamentally solves the problem of sediment deposition behind and below the wharf, and at the same time assists in automatically controlling the high-pressure flushing system to more quickly and efficiently solve the problem of wharf silt prevention.

Description

Technical Field

[0001] The present invention relates to a silt prevention system in the field of dredging engineering technology, and particularly to a silt prevention system behind and below a wharf with a control device based on the theory of fluid mechanics and the mechanism of sediment movement mechanics. Background Art

[0002] With the rapid development of the world economy and trade, the construction and application of wharves have received unprecedented attention. As an important part of a port, a wharf is a hydraulic structure for ships to dock, load and unload goods, and embark and disembark passengers. A wharf usually consists of an upper structure and a pile group. Among them, the pile group of the wharf, as a water-blocking structure, often causes a decrease in the local flow velocity within the pile group below the wharf, greatly reducing the sediment-carrying capacity of the water flow, resulting in serious sediment deposition in the port basin between and behind the pile groups below the wharf, which will cause great harm to the wharf.

[0003] At present, the traditional methods for solving the problem of sediment deposition behind and below the wharf include the diversion dike sediment prevention method, the cutter suction dredger silt cleaning method, the trailing suction hopper dredger silt cleaning method, the mechanical ship dragging silt dredging method, etc. The diversion dike sediment prevention method is only applicable to the initial stage of wharf construction and has a high construction cost. The other three methods all require the use of dredgers. Due to the action of the tidal current, the dredging space below the wharf is usually limited, the dredging environment is very harsh, and the pile groups below the wharf are relatively dense, which is not suitable for the construction of larger dredgers. At the same time, the use of dredgers to clean silt requires regular silt cleaning treatment behind and below the wharf, and cannot fundamentally solve the problem of silt deposition of the wharf.

[0004] Therefore, it is urgent to design a new type of silt prevention system for fundamentally solving the problem of sediment deposition behind and below the wharf. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a silt prevention system behind and below a wharf with a control device, which can prevent sediment deposition in the port basin behind the wharf and between the pile groups below the wharf, and fundamentally solve the problem of sediment deposition behind and below the wharf.

[0006] The present invention is realized through the following technical solutions. The present invention includes a movable plate, an upper fixing body, a movable rotating body, a lower supporting body, a high-pressure flushing water pipeline, a high-pressure nozzle, a high-pressure water tank, a high-pressure flexible pipe, a high-pressure water pump, a flow velocity meter, a control system, and a sand collector. The upper fixing body is connected to the lower supporting body. The lower supporting body is located at the lower end of the upper fixing body and is inserted into the bottom of the port basin. The movable plate is connected to the upper fixing body through the movable rotating body. The water inlet of the high-pressure water pump is arranged in the water area outside the port basin, and the high-pressure water pump is installed on the high-piled wharf. A plurality of high-pressure water tanks are installed on the movable plate, and a plurality of high-pressure nozzles are arranged on each high-pressure water tank. The high-pressure flexible pipe is arranged at the movable rotating body, and the high-pressure flushing water pipeline is arranged on the upper fixing body. The water outlet of the high-pressure water pump is connected to the water inlet of the high-pressure flushing water pipeline, the water inlet of the high-pressure flexible pipe is connected to the water outlet of the high-pressure flushing water pipeline, and the water outlet of the high-pressure flexible pipe is connected to the water inlet of the high-pressure water tank. The flow velocity meter and the sand collector are both arranged in the port basin of the target wharf. The flow velocity meter, the sand collector, and the high-pressure water pump are all connected to the control system through wire harnesses.

[0007] Further, in the present invention, the upper fixing body and the lower supporting body are of an integral structure.

[0008] Furthermore, in the present invention, the plurality of high-pressure water tanks are arranged in parallel, and the high-pressure nozzles on each high-pressure water tank are arranged in a single row.

[0009] Furthermore, in the present invention, the anti-silting system is installed on both sides in the port basin of the target wharf and is installed at a certain angle with the high-piled wharf and the shore.

[0010] Furthermore, in the present invention, during high tide, the movable plate rotates inward around the movable rotating body to form an open basin; during low tide, the movable plate adheres to the lower supporting body to form an integral plane with the upper fixing body. The control system automatically turns on the high-pressure water pump according to the low tide time of the day, and controls the rotation speed and flow rate of the high-pressure water pump according to the sediment particle size obtained by the sand collector, the flow velocity in the port basin measured by the flow velocity meter, and the relationship between the sediment particle size and the settling velocity.

[0011] Compared with the prior art, the present invention has the following beneficial effects: First, the structure of the present invention is simple, and the manufacturing and installation are convenient and reliable; Second, the present invention can automatically control the opening and closing of the anti-silting system through the impact of water flow, and fundamentally solve the problem of sediment deposition behind and below the wharf according to the principle of fluid mechanics; Third, the present invention can automatically control the high-pressure flushing system according to the flood and ebb tide time of the target wharf, the flow velocity in the harbor basin and the sediment particle size. While the high-pressure flushing water ejected from the high-pressure nozzles agitates the sediment inside the harbor basin, it increases the ebb tide flow velocity in the harbor basin, greatly increasing the sediment-carrying capacity of the ebb tide flow, playing a role in preventing siltation. At the same time, under the condition of meeting the minimum flow velocity condition required for sediment agitation in the harbor basin of the target wharf, the energy consumption of the high-pressure flushing system is controlled to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The figure shows a schematic structural diagram of an existing high-pile wharf;

[0013] Figure 2 The figure shows a schematic inner structure diagram of the anti-silting system provided by an embodiment of the present invention;

[0014] Figure 3 The figure shows a schematic outer structure diagram of the anti-silting system provided by an embodiment of the present invention;

[0015] Figure 4 The figure shows a schematic structural diagram of a high-pile wharf installed with the anti-silting system provided by an embodiment of the present invention;

[0016] Figure 5 The figure shows a schematic diagram of the high-pressure flushing control system provided by an embodiment of the present invention;

[0017] Figure 6 The figure shows a relationship diagram of sediment particle size and sedimentation velocity obtained from experimental measurements;

[0018] DESCRIPTION OF REFERENCE NUMERALS:

[0019] 1. Movable plate, 2. Upper fixed body, 3. Movable rotating body, 4. Lower support body, 5. High-pressure flushing pipeline, 6. High-pressure nozzle, 7. High-pressure water tank, 8. High-pressure flexible pipe, 9. High-pressure water pump, 10. Flow velocity meter, 11. Control system, 12. Sand sampler, 13. Approach bridge, 14. High-pile wharf, 15. Pile group. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following detailed description of the embodiments of the present invention is given on the premise of the technical solution of the present invention, with detailed implementation manners and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0021] Embodiment

[0022] Reference Figure 1 As shown in Figure 1 , both ends of the approach bridge 13 are respectively connected to the high-pile wharf 14 and the shore. The pile group 15 under the high-pile wharf 14 is a water-blocking structure. Due to the damping effect of the pile group 15 of the high-pile wharf, the local flow velocity within the pile group under the wharf often decreases, greatly reducing the sediment-carrying capacity of the water flow, resulting in serious sediment deposition between the pile groups under the high-pile wharf and in the port basin behind, which poses a great harm to the high-pile wharf.

[0023] Reference Figure 2 and Figure 3 As shown in Figure 2 and Figure 3 , the present invention mainly includes a movable plate 1, an upper fixing body 2, a movable rotating body 3, a lower supporting body 4, a high-pressure flushing pipeline 5, a high-pressure nozzle 6, a high-pressure water tank 7, a high-pressure flexible pipe 8, a high-pressure water pump 9, a flow velocity meter 10, a control system 11, and a sand sampler 12.

[0024] The lower supporting body 4 and the upper fixing body 2 are integrated. The lower supporting body 4 is inserted into the bottom of the port basin to support the entire anti-silting system, and the movable plate 1 is connected to the upper fixing body 2 through the movable rotating body 3.

[0025] The high-pressure flushing pipeline 5, the high-pressure nozzle 6, the high-pressure water tank 7, the high-pressure flexible pipe 8, and the high-pressure water pump 9 constitute the entire high-pressure flushing system. One end of the high-pressure flushing pipeline 5 is connected to the water outlet of the high-pressure water pump 9. The water inlet of the high-pressure water pump 9 is placed in the water area outside the port basin to pump high-pressure water from the water area outside the port basin. The high-pressure water pump 9 is installed on the wharf. The high-pressure water in the high-pressure flushing pipeline 5 enters the high-pressure water tank 7 through the high-pressure flexible pipe 8. A plurality of high-pressure water tanks 7 are installed on the movable plate 1, and a plurality of high-pressure nozzles 6 are arranged on the high-pressure water tank 7. The high-pressure water in the high-pressure flushing pipeline 5 enters the high-pressure water tank 7 and sprays out from the high-pressure nozzles 6 to stir the sediment in the port basin and increase the water flow velocity in the port basin, thereby increasing the sediment-carrying capacity of the ebb tide water flow.

[0026] Reference Figure 4 As shown in Figure 4 , the anti-silting system provided in the embodiment of the present invention is installed on both sides in the target wharf port basin and is installed at a certain angle with the high-pile wharf and the shore.

[0027] Reference Figure 5 and Figure 6, an embodiment of the present invention provides a control system 11, which consists of a current meter 10, a sand sampler 12, and a control algorithm; the current meter 10 is installed in the harbor basin of the target wharf to collect and monitor the current velocity in the harbor basin in real time, and the sand sampler 12 periodically takes sand from the sediment in the harbor basin of the target wharf and analyzes the sediment particle size in the harbor basin of the target wharf; the data collected by the current meter 10 and the sand sampler 12 are input into the control system 11 in real time; the control algorithm of the control system 11 is compiled according to the ebb and flow time of the target wharf and the relationship between the sediment particle size and the settling velocity; through experimental research on the settling characteristics of sediments with different particle sizes, the relationship between the sediment particle size and the settling velocity is obtained.

[0028] During the flood tide, the tidal current surges from the sea area towards the high-piled wharf and the harbor basin. Under the action of the tidal current, the movable plate 1 of the silt prevention system opens inward around the movable body 3, forming an open basin. At this time, due to the open basin and the relatively large flow-through area, the flow velocity of the water entering the harbor basin is relatively low, and the sediment-carrying capacity is limited. During this period, the control system 11 closes the entire high-pressure flushing system according to the flood tide time of the day.

[0029] During the ebb tide, the tidal current flows from the harbor basin towards the sea area. Under the action of the tidal current, the movable plate 1 of the silt prevention system automatically closes, that is, the movable plate 1 adheres to the lower support body 4 and forms an integral plane with the upper fixed body 2. The two sides of the harbor basin are closed, and all the water in the harbor basin cannot flow out through the silt prevention systems on both sides. It can only flow along the silt prevention system towards the high-piled wharf and flow into the sea area through the pile groups of the high-piled wharf. At this time, the flow-through area of the basin in the harbor basin is greatly reduced. According to the relevant knowledge of fluid mechanics, the flow velocity of the basin will inevitably increase, which will be conducive to carrying away the sediment in the harbor basin and between the pile groups under the wharf; at the same time, during the ebb tide, the control system 11 automatically turns on the high-pressure water pump 9 according to the ebb tide time of the day, and controls the rotation speed and flow rate of the high-pressure water pump 9 according to the sediment particle size obtained by the sand sampler 12, the flow velocity in the harbor basin measured by the current meter 10, and the relationship between the sediment particle size and the settling velocity. Under the condition of meeting the minimum flow velocity required for sediment agitation in the harbor basin of the target wharf, the energy consumption of the high-pressure flushing system is controlled to the greatest extent, thereby fundamentally solving the problem of sediment deposition behind and under the wharf.

[0030] Compared with the prior art, the innovation and advantages of the present invention are as follows:

[0031] First, the structure of the present invention is simple, and the manufacturing and installation are convenient and reliable.

[0032] Second, the present invention automatically controls the opening and closing of the silt prevention system through the impact of water flow, and can fundamentally solve the problem of sediment deposition behind and under the wharf according to the fluid principle and the mechanism of sediment movement mechanics.

[0033] Third, the present invention can automatically control the high-pressure flushing system according to the ebb and flow time of the target wharf, the flow velocity in the harbor basin, and the sediment particle size. While the high-pressure water jet ejected from the high-pressure nozzle agitates the sediment inside the harbor basin, it increases the ebb flow velocity in the harbor basin, greatly enhancing the sediment-carrying capacity of the ebb flow, playing a role in preventing siltation. At the same time, under the condition of meeting the minimum flow velocity required for sediment agitation in the harbor basin of the target wharf, the energy consumption of the high-pressure flushing system is controlled to the greatest extent.

[0034] It should be noted that the above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. The technical features described in the embodiments of the present invention or the combination of technical features should not be considered isolated. They can be combined with each other to achieve better technical effects. Technologies, methods, and equipment known to those of ordinary skill in the relevant field are not discussed in detail, but in appropriate cases, the said technologies, methods, and equipment should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A silt prevention system behind and below a dock with a control device, characterized in that, It includes a movable plate, an upper fixing body, a movable rotating body, a lower support body, a high-pressure flushing water pipeline, a high-pressure nozzle, a high-pressure water tank, a high-pressure flexible pipe, a high-pressure water pump, a current meter, a control system, and a sand sampler; The upper fixing body is connected to the lower support body. The lower support body is located at the lower end of the upper fixing body and is inserted into the bottom of the port basin. The movable plate is connected to the upper fixing body through the movable rotating body; The water inlet of the high-pressure water pump is arranged in the water area outside the port basin, and the high-pressure water pump is installed on the high-piled wharf; Multiple high-pressure water tanks are installed on the movable plate, and multiple high-pressure nozzles are arranged on each high-pressure water tank; The high-pressure flexible pipe is arranged at the movable rotating body, and the high-pressure flushing water pipeline is arranged on the upper fixing body; The water outlet of the high-pressure water pump is connected to the water inlet of the high-pressure flushing water pipeline, the water inlet of the high-pressure flexible pipe is connected to the water outlet of the high-pressure flushing water pipeline, and the water outlet of the high-pressure flexible pipe is connected to the water inlet of the high-pressure water tank; The current meter and the sand sampler are both arranged in the port basin of the target wharf; The current meter, the sand sampler, and the high-pressure water pump are all connected to the control system through wire harnesses; During high tide, the movable plate rotates inward around the movable rotating body to form an open water area; During low tide, the movable plate adheres to the lower support body to form an integral plane with the upper fixing body.

2. The anti-silting system behind and below the wharf with a control device according to claim 1, wherein The upper fixing body and the lower support body are of an integral structure.

3. The anti-silting system behind and below the wharf with a control device according to claim 1, characterized in that The multiple high-pressure water tanks are arranged in parallel, and the high-pressure nozzles on each high-pressure water tank are arranged in a single row.

4. The anti-silting system behind and below the wharf with a control device according to claim 1, characterized in that The anti-silting system is installed on both sides in the port basin of the target wharf and is installed at a certain angle with the high-piled wharf and the shore.

5. The silt prevention system behind and below the wharf with a control device according to claim 4, characterized in that The control system automatically turns on the high-pressure water pump according to the low tide time of the day, and controls the rotation speed and flow rate of the high-pressure water pump according to the sediment particle size obtained by the sand sampler, the flow rate in the port basin measured by the current meter, and the relationship between the sediment particle size and the settling velocity.

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