System for preventing water bottom sediment deposition of jetty type wharf berths in riverway

Abstract

The utility model relates to a system for preventing water bottom sediment deposition of a jetty type wharf berth in a riverway, a row of wharf stand columns are arranged on each of two sides of a jetty type wharf, the system further comprises a set of water bottom sediment deposition devices located on each of two sides of the jetty type wharf, and each water bottom sediment deposition device comprises an underwater jet flow water supply main pipe, a pump room and a water suction pipe; the underwater water supply header pipe is in an L shape and comprises a vertical section and a horizontal section which are communicated with each other, the vertical section vertically and downwards extends into a river channel from the outer side of the wharf stand column, and the horizontal section extends outwards and is lower than the ship bottom berthed at the maximum design draft; the horizontal section is provided with a nozzle for spraying towards the periphery; the pump room is communicated with the water suction pipe and the underwater water supply main pipe; and the water suction pipe downwards extends into the river channel. According to the jetty type wharf, the flushing pipe networks are arranged on the two sides of the jetty type wharf, the flushing degree is thorough, and secondary deposition caused by the fact that water flow carries silt again to a cleaned area can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of prevent riverway in embankment type wharf berth water bottom silt accumulation systems, belong to wharf silt accumulation processing technical field. BACKGROUND

[0002] The wharf berth located in riverway, with the sedimentation of silt in river water, the thickness of water bottom silt increases continuously, so that the draught depth on berth reduces, which will lead to the ship parked on berth to be stranded when water level is low, even berth cannot normally berth ship. Especially the riverbank wharf berth located in the lower reaches of Yangtze River near the estuary area, due to the slowing down of river flow and the influence of tide, the silt-laden water of Yangtze River is more likely to deposit, and the problem of berth siltation is more serious.

[0003] Periodically using professional dredging equipment dredger to excavate or suck the silt at wharf berth and transport it away from wharf area to achieve the purpose of water bottom dredging. Dredger usually has the functions of silt excavation, transportation and discharge, and can be divided into cutter suction type, rake suction type and grab type dredger according to different working methods and technical principles. The disadvantages of using dredger for dredging are as follows: regular dredging, berth needs to be interrupted for ship berthing; the effect of dredging is general. During the process of dredging, water flow will carry silt to the area that has been cleaned, which is easy to cause "secondary siltation"; the cost of dredging is high. The design and construction cost of dredger is high, and the maintenance and use cost is also high.

[0004] Therefore, the prior art has a means of arranging pipe network near wharf for flushing to remove the silt around wharf, which has the following problems:

[0005] 1) The pipe network is arranged at the slope surface of wharf or along the slope surface of wharf, which can only remove the silt at the bottom of river close to wharf, the range of silt removal is small, the dredging is not thorough, and it cannot be applied to embankment type wharf.

[0006] 2) The silt prevention surface is limited by the size of ship body for berthing and the impact force on dock bottom when berthing;

[0007] 3) It is limited to high-pile wharf facilities on slope bank, and the silt flushing capacity for ship bottom is insufficient by laying pipe network on silt surface on slope bank.

[0008] For example, the existing patents are:

[0009] Chinese patent document "Multi-silt river wharf silt prevention method and multi-silt river wharf" with publication date of June 7, 2022 and publication number of CN114592474A; and

[0010] Chinese patent document "Power pipe network for removing silt under wharf" with publication date of August 15, 2012 and publication number of CN202380440U. SUMMARY

[0011] The utility model discloses a prevent the system of riverway wharf berth water bottom siltation, is arranged the washing pipe network at the both sides of the spur dyke wharf, and the washing pipe network is designed as L shape structure, and first downward again transversely stretches into the bottom plate below the ship, and the anti-silt surface is not limited to the ship size of the berthing ship, avoids the impact force to the dock bottom when berthing, can more thoroughly wash the siltation of the ship bottom, can not depend on high pile wharf facilities simultaneously, and " secondary siltation " caused by the water flow can avoid carrying the silt to the area that has cleaned over again.

[0012] The utility model discloses the following technical scheme:

[0013] A prevent the system of riverway spur dyke wharf berth water bottom siltation, and the both sides of the spur dyke wharf each are equipped with a row of wharf column 6, still include the water bottom siltation device of each set of both sides of the spur dyke wharf, the water bottom siltation device includes underwater jet flow water supply main pipe 7, pump house, water suction pipe 8, the underwater jet flow water supply main pipe 7 is L-shaped, includes the vertical section and horizontal section that intercommunication, the vertical section from the outside of wharf column 6 vertically downward stretches into the riverway interior, the horizontal section extends to the outside and is below the maximum design draught depth berthing ship bottom, be equipped with the spout 701 that sprays to all around on the horizontal section, the pump house with water suction pipe 8, underwater jet flow water supply main pipe 7 intercommunication, water suction pipe 8 downward stretches into the riverway interior.

[0014] Preferably, the bottom of the vertical section of the underwater jet flow water supply main pipe 7 is provided with the spout 701 facing the downstream direction.

[0015] Further, the height of the spout 701 is lower than the bottom of the maximum design draught depth berthing ship.

[0016] Preferably, the underwater jet flow water supply main pipes 7 located on the same side of the wharf are parallel to each other.

[0017] Preferably, it further includes a water supply main pipe 9, the pump house is communicated with the water supply main pipe 9 on both sides of the wharf, the side wall of the water supply main pipe 9 is communicated with the upper end of the vertical section of each underwater jet flow water supply main pipe 7, and the length of the water supply main pipe 9 covers the range of the underwater jet flow water supply main pipe 7.

[0018] Preferably, a shut-off valve 10 is arranged between each underwater jet flow water supply main pipe 7 and the water supply main pipe 9.

[0019] The utility model has the advantages of:

[0020] 1) The flushing pipe network is arranged on both sides of the spur-dike wharf, and the flushing pipe network is designed as an L-shaped structure, which is first downward and then transversely extends into the bottom plate of the ship, the anti-silt surface is not limited to the size of the hull of the berthed ship, the impact force on the dock bottom during berthing is avoided, the silt accumulation on the ship bottom can be more thoroughly flushed, the flushing degree is thorough, and the water flow can be avoided to carry the silt to the already cleaned area to cause "secondary deposition";

[0021] 2) The anti-silt function can be realized without damaging the existing wharf infrastructure;

[0022] 3) The underwater vertical flushing is combined with the lateral drainage to improve the silt removal and deposition prevention effect;

[0023] 4) The cutoff valve is arranged between each underwater jet flow water supply main pipe and the water supply main pipe, the failure / maintenance of a single branch pipe (underwater jet flow water supply main pipe) will not affect the system, and the system reliability and redundancy are high. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a plan view of the system for preventing silt accumulation in the water bottom of the spur-dike wharf in the river channel.

[0025] Figure 2 is an elevation front view of the system for preventing silt accumulation in the water bottom of the spur-dike wharf in the river channel.

[0026] Figure 3 is a partial enlarged view of Figure 2 .

[0027] Figure 4 is an elevation side view of the system for preventing silt accumulation in the water bottom of the spur-dike wharf in the river channel.

[0028] Figure 5 is a partial enlarged view of Figure 4 .

[0029] In the figure, 1. First berthed ship, 2. Second berthed ship, 3. First pump house, 4. Second pump house, 5. Wharf, 6. Wharf column, 7. Underwater jet flow water supply main pipe, 8. Water suction pipe, 9. Water supply main pipe, 10. Cutoff valve. DETAILED DESCRIPTION

[0030] The utility model will be further described below in combination with the drawings and specific embodiments.

[0031] Referring to Figures 1-5The application discloses a system for preventing water bottom sediment accumulation of a spur-dike wharf berth in a river channel, wherein each side of the spur-dike wharf is provided with a row of wharf columns 6, and further comprises a set of water bottom sediment accumulation devices arranged on each side of the spur-dike wharf, wherein the water bottom sediment accumulation devices comprise an underwater jet flow water supply main pipe 7, a pump house and a water suction pipe 8; the underwater jet flow water supply main pipe 7 is in an L shape and comprises a vertical section and a horizontal section which are communicated with each other, the vertical section vertically extends downwards from the outer side of the wharf column 6 into the river channel, and the horizontal section extends to the outer side and is lower than the bottom of a ship with a maximum designed water depth; a jet nozzle 701 which sprays in all directions is arranged on the horizontal section; the pump house is communicated with the water suction pipe 8 and the underwater jet flow water supply main pipe 7; and the water suction pipe 8 extends downwards into the river channel.

[0032] In this embodiment, referring to Figure 5 , a section of the bottom of the vertical section of the underwater jet flow water supply main pipe 7 is provided with the jet nozzle 701 which faces the downstream direction.

[0033] In this embodiment, referring to Figure 4 and 5 , the height of the jet nozzle 701 is lower than the bottom of the ship with the maximum designed water depth.

[0034] In this embodiment, the underwater jet flow water supply main pipes 7 arranged on the same side of the wharf are parallel to each other. The accompanying drawings do not show this.

[0035] In this embodiment, referring to Figures 4-5 , a water supply main pipe 9 is further arranged, the pump house is communicated with the water supply main pipe 9 on both sides of the wharf, the side wall of the water supply main pipe 9 is communicated with the upper end of the vertical section of each underwater jet flow water supply main pipe 7, and the length of the water supply main pipe 9 covers the range of the underwater jet flow water supply main pipe 7.

[0036] In this embodiment, referring to Figure 2 and 3 , a cut-off valve 10 is arranged between each underwater jet flow water supply main pipe 7 and the water supply main pipe 9.

[0037] The utility model uses the method of hydrodynamic improvement, is applied to the water bottom of wharf berth area in river channel, lays underwater scour system. Through the pump house arranged on the wharf inhales the river water as the water source of scour system, through the scour pipeline and water flow injection system, the water bottom sediment is stirred up, prevents the sediment deposition, cooperates the underwater drainage system, forms the water bottom flow field with the relatively calm water of berth area, carries away the sediment.

[0038] At a certain depth of the water bottom of the berth, such as a water depth of 10 meters, a plurality of scouring pipes are pre-buried, and a certain number of nozzles are installed on each pipe. The scouring pipes are perpendicular to the edge of the wharf with a spacing of 3-5 meters per pipe. The material of the pipe is corrosion-resistant and can withstand pressure, so that when the ship runs aground and presses on the pipe, the bottom of the ship will not be damaged, such as using a PE pipe. These parts laid on the water bottom like floor heating pipes are called scouring pipes and water jet systems.

[0039] In addition, we arrange a row of nozzles on the edge of the wharf at a certain height from the water bottom (such as 2-3 meters above the water bottom). The nozzles are on the inside of the outside columns of the wharf and will not hit the parked ships. The nozzles are uniformly directed downstream, and the high-pressure water jet drives the water in the berth to form a flow field flowing downstream, carrying away the stirred-up water bottom sediment.

[0040] A pump house is provided on the wharf to pump out high-pressure water from the river water with a low sediment content at the water surface as the water source of the scouring system.

[0041] The method of using water power improvement is applied to the water bottom of the wharf berth area in the river channel to lay the underwater scouring system. The river water is pumped into the pump house on the wharf as the water source of the scouring system, and the water bottom sediment is stirred up through the scouring pipe and water flow jet system to prevent sediment deposition; the relatively calm water in the berth area is formed into a water bottom flow field to carry away the sediment with the help of the underwater drainage system.

[0042] At a certain depth of the water bottom of the berth, such as a water depth of 10 meters, a plurality of scouring pipes are pre-buried, and a certain number of nozzles are installed on each pipe. The scouring pipes are perpendicular to the edge of the wharf with a spacing of 3-5 meters per pipe. The material of the pipe is corrosion-resistant and can withstand pressure, so that when the ship runs aground and presses on the pipe, the bottom of the ship will not be damaged, such as using a PE pipe. These parts laid on the water bottom like floor heating pipes are called scouring pipes and water jet systems. After reaching the equilibrium state, the horizontal section of the underwater jet supply pipe is at the position of the river bottom soil surface.

[0043] In addition, we arrange a row of nozzles on the edge of the wharf at a certain height from the water bottom (such as 2-3 meters above the water bottom). The nozzles are on the inside of the outside columns of the wharf and will not hit the parked ships. The nozzles are uniformly directed downstream, and the high-pressure water jet drives the water in the berth to form a flow field flowing downstream, carrying away the stirred-up water bottom sediment.

[0044] A pump house is provided on the wharf to pump out high-pressure water from the river water with a low sediment content at the water surface as the water source of the scouring system.

[0045] The system has a simple structure, low cost, one-time investment, continuous use, low maintenance cost, and good anti-silt effect.

[0046] The utility model discloses a flushing pipe network is arranged on both sides of the spur-dyke wharf, and the flushing pipe network is designed as L-shaped structure, and then stretches into the bottom plate below the ship horizontally, and the flushing degree is thorough, and relative to the prior art of two articles of prior art cited in the background, the anti-silt surface is not limited to the size of the ship body of the berthing ship, the impact force on the dock bottom when berthing is avoided, the siltation of the ship bottom can be washed more thoroughly, and meanwhile, the high-pile wharf facilities can not be relied on, and the "secondary siltation" caused by the water flow carrying the silt to the cleaned area again can be avoided, the anti-silt function can be realized without destroying the existing wharf infrastructure, the underwater vertical direction flushing is combined with the lateral drainage, the silt removing and deposition preventing effect is improved, the cutoff valve is arranged between each underwater jet flow water supply main pipe and the water supply main pipe, the failure of the single underwater jet flow water supply main pipe does not affect the system, and the system reliability and redundancy are high.

[0047] The above is the preferred embodiment of the present application, and various transformations or improvements can be made by those skilled in the art on the basis of the present application, and these transformations or improvements should belong to the scope of the present application without departing from the general concept of the present application.

Claims

1. A system for preventing underwater sediment accumulation at a spur-dike wharf berth in a river, the spur-dike wharf having a row of wharf columns (6) on each side thereof, characterized in that: it further comprises a set of underwater sediment accumulation devices on each side of the spur-dike wharf, the underwater sediment accumulation devices comprising an underwater jet flow water supply main (7), a pump house, and a water suction pipe (8); the underwater jet flow water supply main (7) is L-shaped, comprising a vertical section and a horizontal section that are in communication with each other, the vertical section extends vertically downward from the outside of the wharf column (6) into the interior of the river, and the horizontal section extends outward and is lower than the bottom of a ship with a maximum designed draft; the horizontal section is provided with a plurality of nozzles (701) that jet in all directions; the pump house is in communication with the water suction pipe (8) and the underwater jet flow water supply main (7); the water suction pipe (8) extends downward into the interior of the river; a section of the bottom of the vertical section of the underwater jet flow water supply main (7) is provided with the nozzles (701) that face the downstream direction; the height of the nozzles (701) is lower than the bottom of a ship with a maximum designed draft; the underwater jet flow water supply mains (7) on the same side of the wharf are parallel to each other; it further comprises a water supply main pipe (9), the pump house is in communication with the water supply main pipe (9) on each side of the wharf, the side wall of the water supply main pipe (9) is in communication with the upper end of the vertical section of each underwater jet flow water supply main (7), and the length of the water supply main pipe (9) covers the range of the underwater jet flow water supply main (7); a shut-off valve (10) is arranged between each underwater jet flow water supply main (7) and the water supply main pipe (9). ​ ​ ​ ​ 2. The system for preventing water bottom sediment deposition in the abutment type wharf berth in the river channel according to claim 1, characterized in that: ​ 3. The system for preventing water bottom sediment deposition in the abutment type wharf berth in the river channel according to claim 2, characterized in that: ​ 4. The system for preventing water bottom sediment deposition in the abutment type wharf berth in the river, according to claim 1, wherein: ​ 5. The system for preventing water bottom sediment deposition in the abutment type wharf berth in the river, according to claim 1, wherein: ​ 6. The system for preventing water bottom sediment deposition in the abutment type wharf berth in a river, according to claim 1, wherein: ​

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