A mobile high-precision underwater layered sand control construction method and equipment

Abstract

The present invention relates to the technical field of underwater sand laying, and specifically to a mobile high-precision underwater layered sand laying control construction method and equipment. The present invention provides a sand box, a sliding groove, a fixed pipe, a supporting pipe, a partition rod, a tooth plate, a spring, a stirring plate, a water pump, a water inlet hole, and a nozzle, so that when a belt sand ship supplies sand to the inside of the sand box, the sand entering the sand box can be evenly spread inside the sand box, and the sand evenly spread in the sand box can be evenly spread in layers in the sand box to the bottom of the construction area, thereby reducing the probability of the problem that the uniformity of the laid sand layer is low and the uniform sand laying cannot be achieved when the underwater sand laying is carried out.

Description

Technical Field

[0001] The invention relates to the technical field of underwater sand spreading, in particular to a mobile high-precision underwater layered sand spreading control construction method and equipment. Background Art

[0002] Underwater sand laying is a new type of construction technology in the water transport industry. The role of sand cushion layer in various projects is different, and the main content of the design is also different. The sand cushion layer is laid on the top surface of the soft soil layer, which mainly plays the role of shallow horizontal drainage and accelerates the drainage and consolidation of the soft soil layer. The drainage surface provided by the sand cushion layer can not only quickly dissipate the pore water pressure under the foundation to avoid plastic damage of the foundation soil, but also accelerate the consolidation and strength improvement of the soft soil under the sand cushion layer. The sand cushion layer is directly laid in layers on the original mud surface of the silt bottom to prevent the silt from arching up to form silt bags. In the construction of deep cement agitator board composite foundation, the sand cushion layer can provide a covering layer for the deep cement agitator board piles to prevent the mud from directly overflowing during the piling process.

[0003] The difficulty of underwater sand laying is that the construction machinery is either ships or supported and carried by ships. In the prior art, when sand is laid underwater, the uniformity of the laid sand layer is low and uniform sand laying cannot be achieved.

[0004] Therefore, it is urgent to invent a mobile high-precision underwater layered sand control construction method and equipment to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides the following technical solutions: a mobile high-precision underwater layered sand laying control construction method, the method comprising the following steps;

[0006] Step 1: Construction preparation: Plan the construction area in different zones and layers;

[0007] Step 2: Route planning: Plan the movement route of the sand paving equipment in the construction area and the construction parameters of the construction equipment;

[0008] Step 3: Equipment in place: The sand-laying equipment moves into the construction area and drops anchor. The sand-laying equipment includes a belt sand ship, a paving ship and a positioning flat barge;

[0009] Step 4, construction: start the sand spreading equipment and run it according to the operating parameters set in the above step 3. The belt sand ship supplies sand to the paving ship, the paving ship spreads sand underwater, and the positioning flat barge positions and fixes the paving ship. The paving ship spreads sand for 8 minutes;

[0010] Step 5: Ship moving and construction: After the paving ship has finished paving sand in step 4, the positioning flat barge is anchored and moves along the moving route planned in step 2 in cooperation with the paving ship. The paving ship and the positioning flat barge can sail in narrow waterways and shallow waterways to avoid the paving ship from running aground, and the work efficiency is greatly increased. At the same time, the belt sand ship is moved and followed up. After the positioning flat barge moves to the next sand paving area planned in step 1, the positioning flat barge is anchored and step 3 is repeated. This cycle is repeated until all the construction areas are paved with sand.

[0011] Step 6. Inspection: Inspect the thickness and flatness of the sand layer laid in step 5 above. If qualified, it can be delivered. If unqualified, it is necessary to readjust the moving route of the sand-laying equipment and the construction equipment parameters for re-paving.

[0012] Preferably, when the belt sand ship supplies sand to the paving ship in step three, the stern of the belt sand ship is the center of the circle, so that the sand outlet swings back and forth at a uniform speed in a fan shape, thereby achieving uniform paving of the sand in the sand paving equipment.

[0013] A mobile high-precision underwater layered sand paving equipment comprises a sand box, which is arranged outside a paving ship and is used to receive sand transported by a belt sand ship. The inner wall of the sand box is evenly provided with symmetrically arranged sliding grooves, and the bottom inner wall of the sliding groove is symmetrically fixedly connected with a fixed pipe, and the other end of the fixed pipe penetrates the box wall of the sand box to the top of the sand box, and the outer wall of the fixed pipe is sealed and slidably connected with a support pipe, and the outer wall of the support pipe is evenly rotatably connected with a partition rod, one end of the partition rod penetrates one end of the support pipe to the other end thereof, and the partition rods are synchronized by gear meshing. Step transmission, the bottom inner wall of the sliding groove is fixedly connected with a tooth plate, and the tooth plate meshes with the gear on the partition rod 5 for transmission, the bottom inner wall of the sliding groove is fixedly connected with a spring, and the other end of the spring is fixedly connected to the bottom of the support tube, the inside of the support tube is connected through a pipeline, the outer ring wall of the partition rod is evenly fixedly connected with a stirring plate, the outer wall of the sand box is fixedly connected with a water pump, and the water outlet of the water pump is connected with the inside of the support tube through a pipeline, the lower outer wall of the fixed tube is provided with a water inlet hole, and the top of the fixed tube is fixedly connected with a nozzle inclined toward the partition rod.

[0014] Preferably, the inner wall of the sand box is evenly slidably connected with a symmetrically arranged baffle, the baffle covers the sliding groove, and the baffle is penetrated by the partition rod, and the inner wall of the baffle penetrated is sealed and rotatably connected with the outer ring wall of the partition rod.

[0015] Preferably, a sealing tube is symmetrically fixedly connected to the inner wall of the bottom of the support tube, the sealing tube sleeves the fixed tube, and the inner ring wall of the sealing tube is sealingly and slidingly connected to the outer ring wall of the fixed tube.

[0016] Preferably, a rotating joint is provided in the middle of the nozzle, the rotating joint divides the nozzle, and an impeller is fixedly connected to the inner wall of the lower half of the nozzle.

[0017] Preferably, the bottom of the sand box is retractable.

[0018] Preferably, a pressure relief valve is provided on the outer wall of the water outlet of the water pump.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention provides a sand box, a sliding groove, a fixed pipe, a supporting pipe, a partition rod, a tooth plate, a spring, a stirring plate, a water pump, a water inlet hole and a nozzle, so that when the belt sand ship supplies sand into the sand box, the sand entering the sand box can be evenly spread inside the sand box, and the sand evenly spread in the sand box can be evenly spread in layers in the sand box to the bottom of the construction area, thereby reducing the probability of the problem that the uniformity of the laid sand layer is low and the sand cannot be evenly spread when laying sand underwater.

[0021] 2. The present invention provides a sealing tube to prevent the water inlet hole from being completely covered when the support tube slides down and moves up to reset, causing water to enter the interior of the fixed tube from the water inlet hole and then spray out from the water inlet hole, resulting in no water entering the nozzle.

[0022] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a stereogram of the present invention;

[0025] Figure 2 yes Figure 1 A local enlarged view of point A in FIG.

[0026] Figure 3 is a partial cross-sectional view of the present invention;

[0027] Figure 4 yes Figure 3 A local enlarged view of point B in FIG.

[0028] Figure 5 It is the internal structure diagram of the support tube in the present invention;

[0029] Figure 6 It is the internal structure diagram of the nozzle in the present invention.

[0030] In the figure: 1. sand box; 2. sliding groove; 3. fixed pipe; 4. supporting pipe; 5. partition rod; 6. tooth plate; 7. spring; 8. stirring plate; 9. water pump; 10. water inlet hole; 11. nozzle; 12. baffle; 13. sealing pipe; 14. rotating joint; 15. impeller; 16. pressure relief valve. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0033] A mobile high-precision underwater layered sand-laying control construction method, the method comprising the following steps;

[0034] Step 1: Construction preparation: Plan the construction area in different zones and layers;

[0035] Step 2: Route planning: Plan the movement route of the sand paving equipment in the construction area and the construction parameters of the construction equipment;

[0036] Step 3: Equipment in place: The sand-laying equipment moves into the construction area and drops anchor. The sand-laying equipment includes a belt sand ship, a paving ship and a positioning flat barge;

[0037] Step 4, construction: start the sand spreading equipment and run it according to the operating parameters set in the above step 3. The belt sand ship supplies sand to the paving ship, the paving ship spreads sand underwater, and the positioning flat barge positions and fixes the paving ship. The paving ship spreads sand for 8 minutes;

[0038] Step 5: Ship moving and construction: After the paving ship has finished paving sand in step 4, the positioning flat barge is anchored and moves along the moving route planned in step 2 in cooperation with the paving ship. The paving ship and the positioning flat barge can sail in narrow waterways and shallow waterways to avoid the paving ship from running aground, and the work efficiency is greatly increased. At the same time, the belt sand ship is moved and followed up. After the positioning flat barge moves to the next sand paving area planned in step 1, the positioning flat barge is anchored and step 3 is repeated. This cycle is repeated until all the construction areas are paved with sand.

[0039] Step 6. Inspection: Inspect the thickness and flatness of the sand layer laid in step 5 above. If qualified, it can be delivered. If unqualified, it is necessary to readjust the moving route of the sand-laying equipment and the construction equipment parameters for re-paving.

[0040] When the belt sand ship supplies sand to the paving ship in the step 3, the stern of the belt sand ship is the center of the circle, so that the sand outlet swings back and forth at a uniform speed in a fan shape, so as to achieve uniform paving of the sand in the sand paving equipment.

[0041] like Figures 1 to 6 As shown; a mobile high-precision underwater layered sand paving equipment, including a sand box 1, the sand box 1 is arranged outside the paving ship, the sand box 1 is used to receive sand transported by a belt sand ship, and is characterized in that: the inner wall of the sand box 1 is evenly opened with symmetrically arranged sliding grooves 2, the bottom inner wall of the sliding groove 2 is symmetrically fixedly connected with a fixed pipe 3, the other end of the fixed pipe 3 penetrates the box wall of the sand box 1 to the top of the sand box 1, the outer wall of the fixed pipe 3 is sealed and slidably connected with a support pipe 4, the outer wall of the support pipe 4 is evenly rotatably connected with a partition rod 5, one end of the partition rod 5 penetrates one end of the support pipe 4 to the other end thereof, and the partition rods 5 are engaged by gears. The bottom inner wall of the sliding groove 2 is fixedly connected with a tooth plate 6, and the tooth plate 6 is meshed with the gear on the partition rod 5 for transmission. The bottom inner wall of the sliding groove 2 is fixedly connected with a spring 7, and the other end of the spring 7 is fixedly connected with the bottom of the support tube 4. The inside of the support tube 4 is connected through a pipeline. The outer ring wall of the partition rod 5 is evenly fixedly connected with a stirring plate 8. The outer wall of the sand box 1 is fixedly connected with a water pump 9, and the water outlet of the water pump 9 is connected with the inside of the support tube 4 through a pipeline. The lower outer wall of the fixed tube 3 is provided with a water inlet hole 10, and the top of the fixed tube 3 is fixedly connected with a nozzle 11 inclined toward the partition rod 5;

[0042] When in use, the staff starts the water pump 9. When the sand outlet of the belt sand ship transports sand to the inside of the sand box 1 in a fan-shaped uniform reciprocating manner, the sand entering the sand box 1 will accumulate on the partition rod 5 and the stirring plate 8. A part of the sand will slide down evenly from the gap between the partition rod 5 and the stirring plate 8, and the other part of the sand will accumulate on the partition rod 5 and the stirring plate 8. At this time, the partition rod 5 will drive the support pipe 4 to squeeze the spring 7 under the gravity of the sand, so that the support pipe 4 slides downward along the outer wall of the fixed pipe 3. The water pump 9 runs to continuously pump water in the construction river into the inside of the support pipe 4. The support pipes 4 are connected by pipes, so water will enter the inside of all the support pipes 4. As the support pipes 4 move downward, the support pipes 4 The pipe 4 will cover the water inlet hole 10 opened on the fixed pipe 3. After the supporting pipe 4 covers the water inlet hole 10, the water in the supporting pipe 4 will enter the interior of the fixed pipe 3 from the water inlet hole 10. As more and more water enters the interior of the fixed pipe 3, the water in the fixed pipe 3 will enter the interior of the nozzle 11 fixedly connected to the top thereof. The water entering the nozzle 11 will be sprayed from the nozzle 11 to the sand on the partition rod 5 and the stirring plate 8, so that the sand remaining on the partition rod 5 and the stirring plate 8 will slide down evenly along the gap between the partition rod 5 and the stirring plate 8, and only when the supporting pipe 4 is squeezed downward by the sand, the nozzle 11 corresponding to the supporting pipe 4 will spray water, so that the water pump 9 can draw water into the supporting pipe 4 can be concentratedly sprayed to increase the uniformity of the sand sliding down from the gap between the partition rod 5 and the stirring plate 8, and while the support tube 4 drives the partition rod 5 to slide downward, because the tooth plate 6 fixedly connected to the inner wall of the bottom of the sliding groove 2 is meshed with the gear on the partition rod 5, when the partition rod 5 moves downward, the partition rod 5 will rotate, and the rotation of the partition rod 5 drives the stirring plate 8 to rotate, and the rotation of the stirring plate 8 stirs the sand accumulated on the partition rod 5 and the stirring plate 8, so that the sand can slide down evenly from the gap between the partition rod 5 and the stirring plate 8, and because the partition rods 5 are meshed with gears, the rotation directions of the two adjacent gears of the gear transmission are opposite, so the two adjacent partition rods 5 The rotation directions between the two adjacent partition bars 5 are opposite, so that the rotation directions of the stirring plates 8 on the two adjacent partition bars 5 are opposite, thereby increasing the stirring effect of the stirring plates 8 on the sand accumulated on the partition bars 5 and the stirring plates 8, so that when the sand slides down from the gap between the partition bars 5 and the stirring plates 8, it slides more evenly, and the sand that slides down evenly from the gap between the partition bars 5 and the stirring plates 8 will slide in layers evenly on the bottom of the water in the construction area inside the sand box 1, and be evenly laid on the bottom of the water in the construction area, thereby increasing the uniformity of underwater sand laying. When all the sand on the partition bars 5 evenly slides to the bottom of the water in the construction area, the partition bars 5 are no longer squeezed, and at this time the support tube 4 will reset and slide under the thrust of the spring 7 to prepare for the next sand laying;

[0043] At the same time, because the sand outlet of the belt sand ship moves in a fan shape to supply sand to the inside of the sand box 1, after the belt sand ship moves to supply sand to the upper part of the partition rod 5 and the stirring plate 8 on the first section support pipe 4, as the belt sand ship moves, the belt sand ship will supply sand to the upper part of the partition rod 5 and the stirring plate 8 on the second section support pipe 4, and circulate until it reaches the upper part of the partition rod 5 and the stirring plate 8 on the last section support pipe 4, and then supply sand from the upper part of the partition rod 5 and the stirring plate 8 on the last section support pipe 4 to the upper part of the partition rod 5 and the stirring plate 8 on the first section support pipe 4 in the reverse direction, so that the sand supplied by the belt sand ship to the sand box 1 can be evenly spread in the sand box 1, thereby increasing the uniformity of the sand when it is laid from the inside of the sand box 1 to the bottom of the water in the construction area.

[0044] like Figures 1 to 4 As shown; the inner wall of the sand box 1 is evenly slidably connected with a symmetrically arranged baffle 12, the baffle 12 covers the sliding groove 2, and the baffle 12 is penetrated by the partition rod 5, and the inner wall of the baffle 12 penetrated is sealed and rotatably connected with the outer ring wall of the partition rod 5;

[0045] During use, in order to prevent sand from entering the sliding groove 2, the sand in the sliding groove 2 adheres to the gear on the partition rod 5 and the toothed plate 6 fixedly connected to the inner wall at the bottom of the sliding groove 2, causing the toothed plate 6 and the gear on the partition rod 5 to be stuck with each other, resulting in the partition rod 5 being unable to rotate, thereby making the partition rod 5 lose the effect of driving the stirring plate 8 to rotate and making the sand slide evenly. Therefore, a baffle 12 is sealingly and slidably connected to the inner wall of the sand box 1. The baffle 12 covers and seals the sliding groove 2, and when the partition rod 5 moves up and down, the baffle 12 will be pushed by the partition rod 5 moving up and down, causing the baffle 12 to move up and down, and the baffle 12 is sealed and rotatably connected to the inner wall of the penetration point and the outer ring wall of the partition rod 5, so that when the baffle 12 covers and seals the sliding groove 2, the baffle 12 will not affect the normal rotation and up and down movement of the partition rod 5.

[0046] like Figure 6 As shown; a rotary joint 14 is provided in the middle of the nozzle 11, the rotary joint 14 separates the nozzle 11, and an impeller 15 is fixedly connected to the inner wall of the lower half of the nozzle 11;

[0047] When in use, the rotating joint 14 separates the nozzle 11 into two ends, so the divided lower half of the nozzle 11 can rotate, and the impeller 15 is fixedly connected to the inner wall of the lower half of the nozzle 11, so when water flows from the inside of the nozzle 11, the water flow will impact the impeller 15, causing the impeller 15 to rotate. The rotation of the impeller 15 drives the lower half of the nozzle 11 to rotate, so that the nozzle 11 rotates to spray the sand on the partition rod 5 and the stirring plate 8, thereby increasing the effect of water impacting the sand, increasing the uniformity of the sand sliding down from the gap between the partition rod 5 and the stirring plate 8, and increasing the uniformity of sand laying on the bottom of the construction area.

[0048] like Figure 4 and Figure 5 As shown; the bottom inner wall of the support tube 4 is symmetrically fixedly connected with a sealing tube 13, the sealing tube 13 sleeves the fixed tube 3 inside, and the inner wall of the sealing tube 13 is sealed and slidably connected with the outer wall of the fixed tube 3;

[0049] During use, in order to prevent the water inlet hole 10 from being unable to be fully covered when the support tube 4 slides down and moves up to reset, resulting in water entering the interior of the fixed tube 3 from the water inlet hole 10 and then spraying out from the water inlet hole 10, resulting in no water entering the nozzle 11, thereby spraying towards the upper part of the partition rod 5 and the stirring plate 8, a sealing plate is fixedly connected to the bottom of the support tube 4, and the sealing plate moves up and down with the support tube 4. When the support tube 4 cannot cover the water inlet hole 10 completely, the sealing plate will cover and seal the part of the water inlet hole 10 that is not covered by the support tube 4, so that the water that enters the fixed tube 3 from the water inlet hole 10 cannot flow out from the part of the water inlet hole 10 that is not covered by the support tube 4.

[0050] like Figure 1 and Figure 3 As shown; the bottom of the sand box 1 is retractable;

[0051] When in use, the bottom of the sand box 1 is retractable, so that when dealing with different water depths in different construction areas, the sand box 1 can be extended and shortened to make the bottom of the sand box 1 closest to the bottom of the water in the construction area, so that the sand can be evenly laid on the bottom of the water in the construction area inside the sand box 1, thereby preventing the sand from sliding out of the sand box 1 while there is a large distance between the sand and the bottom of the water in the construction area, so that when the sand slides down over this distance, it is dispersed by the surging water flow on the bottom of the water in the construction area, resulting in a low uniformity of the sand layer after laying.

[0052] like Figure 1 As shown; a pressure relief valve 16 is provided on the outer wall of the water outlet of the water pump 9;

[0053] During use, in order to prevent the water pumped by the water pump 9 from entering the interior of the support pipe 4, due to the delay in sand supply from the belt sand ship or the delay in closing the water pump 9 after the sand laying on the bottom of the construction area is completed, the water inside the support pipe 4 is not discharged from the nozzle 11 in time, and the water pumped by the water pump 9 cannot enter the interior of the support pipe 4, resulting in the water in the water pump 9 cannot be discharged in time, and the kinetic energy of the motor of the water pump 9 is converted into thermal energy, so that the temperature inside the water pump 9 continues to increase, thereby causing the water pump 9 to burn out. Therefore, a pressure relief valve 16 is provided on the outer wall of the water outlet of the water pump 9. When the water pumped by the water pump 9 cannot be discharged into the interior of the support pipe 4, due to the increase in the pressure at the water outlet of the water pump 9, the pressure valve will open at this time, so that the water pumped by the water pump 9 is discharged from the pressure valve, thereby preventing the water pump 9 from burning out.

[0054] Working principle of the present invention:

[0055] Refer to the instruction manual Figure 1-6 , the staff starts the water pump 9. When the sand outlet of the belt sand ship reciprocates at a uniform speed in a fan shape to transport sand to the inside of the sand box 1, the sand entering the sand box 1 will accumulate on the partition rod 5 and the stirring plate 8. A part of the sand will slide down evenly from the gap between the partition rod 5 and the stirring plate 8, and the other part of the sand will accumulate on the partition rod 5 and the stirring plate 8. At this time, the partition rod 5 will drive the support pipe 4 to squeeze the spring 7 under the gravity of the sand, so that the support pipe 4 slides downward along the outer wall of the fixed pipe 3. The water pump 9 runs to continuously pump the water in the construction river into the inside of the support pipe 4. The support pipes 4 are connected by pipes, so the water will enter the inside of all the support pipes 4. As the support pipes 4 move downward, the support pipes 4 The water inlet hole 10 opened on the fixed pipe 3 will be set inside. After the support pipe 4 sets the water inlet hole 10 inside, the water in the support pipe 4 will enter the interior of the fixed pipe 3 from the water inlet hole 10. As more and more water enters the interior of the fixed pipe 3, the water in the fixed pipe 3 will enter the interior of the nozzle 11 fixedly connected to the top thereof. The water entering the nozzle 11 will be sprayed from the nozzle 11 to the sand on the partition rod 5 and the stirring plate 8, so that the sand remaining on the partition rod 5 and the stirring plate 8 will slide down evenly along the gap between the partition rod 5 and the stirring plate 8, and only when the support pipe 4 is squeezed downward by the sand, the nozzle 11 corresponding to the support pipe 4 will spray water, so that the water pump 9 can draw water into the support pipe 4. The water inside can be sprayed in a concentrated manner to increase the uniformity of the sand sliding down from the gap between the partition rod 5 and the stirring plate 8. When the support tube 4 drives the partition rod 5 to slide downward, because the tooth plate 6 fixedly connected to the inner wall at the bottom of the sliding groove 2 is meshed with the gear on the partition rod 5, when the partition rod 5 moves downward, the partition rod 5 will rotate, and the rotation of the partition rod 5 drives the stirring plate 8 to rotate. The rotation of the stirring plate 8 stirs the sand accumulated on the partition rod 5 and the stirring plate 8, so that the sand can slide down evenly from the gap between the partition rod 5 and the stirring plate 8. Because the partition rods 5 are meshed with gears, the rotation directions of the two adjacent gears of the gear transmission are opposite, so the two adjacent partition rods 5 The rotation directions between the two adjacent partition bars 5 are opposite, so that the rotation directions of the stirring plates 8 on the two adjacent partition bars 5 are opposite, thereby increasing the stirring effect of the stirring plates 8 on the sand accumulated on the partition bars 5 and the stirring plates 8, so that when the sand slides down from the gap between the partition bars 5 and the stirring plates 8, it slides more evenly, and the sand that slides down evenly from the gap between the partition bars 5 and the stirring plates 8 will slide in layers evenly on the bottom of the water in the construction area inside the sand box 1, and be evenly laid on the bottom of the water in the construction area, thereby increasing the uniformity of underwater sand laying. When all the sand on the partition bars 5 evenly slides to the bottom of the water in the construction area, the partition bars 5 are no longer squeezed, and at this time the support tube 4 will reset and slide under the thrust of the spring 7 to prepare for the next sand laying;

[0056] At the same time, because the sand outlet of the belt sand ship moves in a fan shape to supply sand to the inside of the sand box 1, after the belt sand ship moves to supply sand to the upper part of the partition rod 5 and the stirring plate 8 on the first section support pipe 4, as the belt sand ship moves, the belt sand ship will supply sand to the upper part of the partition rod 5 and the stirring plate 8 on the second section support pipe 4, and circulate until it reaches the upper part of the partition rod 5 and the stirring plate 8 on the last section support pipe 4, and then supply sand from the upper part of the partition rod 5 and the stirring plate 8 on the last section support pipe 4 to the upper part of the partition rod 5 and the stirring plate 8 on the first section support pipe 4 in the reverse direction, so that the sand supplied by the belt sand ship to the sand box 1 can be evenly spread in the sand box 1, thereby increasing the uniformity of the sand when it is laid from the inside of the sand box 1 to the bottom of the water in the construction area.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile high-precision underwater layered sand paving equipment, comprising a sand box (1), wherein the sand box (1) is arranged outside a paving ship, and the sand box (1) is used to receive sand transported by a belt sand ship, and is characterized in that: The inner wall of the sand box (1) is evenly provided with symmetrically arranged sliding grooves (2); the bottom inner wall of the sliding groove (2) is symmetrically fixedly connected with a fixed tube (3); the other end of the fixed tube (3) penetrates the box wall of the sand box (1) to the top of the sand box (1); the outer wall of the fixed tube (3) is sealingly and slidably connected with a support tube (4); the outer wall of the support tube (4) is evenly and rotatably connected with a partition rod (5); one end of the partition rod (5) penetrates one end of the support tube (4) to the other end thereof; the partition rods (5) are synchronously driven by gear meshing; the bottom inner wall of the sliding groove (2) is fixedly connected with a toothed plate (6); the toothed plate (6) is connected to the support tube (4) and the toothed plate (6) is connected to the support tube (4). The gears on the partition rod (5) are meshed for transmission, a spring (7) is fixedly connected to the inner wall at the bottom of the sliding groove (2), the other end of the spring (7) is fixedly connected to the bottom of the support tube (4), the interior of the support tube (4) is connected via a pipeline, an agitator (8) is evenly fixedly connected to the outer wall of the partition rod (5), a water pump (9) is fixedly connected to the outer wall of the sand box (1), the water outlet of the water pump (9) is connected to the interior of the support tube (4) via a pipeline, a water inlet hole (10) is provided on the lower outer wall of the fixed tube (3), and a nozzle (11) inclined toward the partition rod (5) is fixedly connected to the top of the fixed tube (3).

2. According to claim 1, a mobile high-precision underwater layered sand-laying device is characterized by: The inner wall of the sand box (1) is evenly and slidably connected with a symmetrically arranged baffle (12), the baffle (12) covers the sliding groove (2), and the baffle (12) is penetrated by the partition rod (5), and the inner wall of the baffle (12) penetrated is sealed and rotatably connected with the outer ring wall of the partition rod (5).

3. According to claim 2, a mobile high-precision underwater layered sand-laying device is characterized in that: A sealing tube (13) is symmetrically fixedly connected to the inner wall of the bottom of the support tube (4), the sealing tube (13) sleeves the fixed tube (3) inside, and the inner wall of the sealing tube (13) is sealingly and slidably connected to the outer wall of the fixed tube (3).

4. According to claim 3, a mobile high-precision underwater layered sand-laying device is characterized in that: A rotating joint (14) is provided in the middle of the spray head (11), the rotating joint (14) divides the spray head (11), and an impeller (15) is fixedly connected to the inner wall of the lower half of the spray head (11).

5. According to claim 4, a mobile high-precision underwater layered sand-laying device is characterized in that: The bottom of the sand box (1) is retractable.

6. The mobile high-precision underwater layered sand-laying equipment according to claim 5 is characterized by: A pressure relief valve (16) is provided on the outer wall of the water outlet of the water pump (9).

7. The control construction method of a mobile high-precision underwater layered sand-laying equipment according to claim 1 is characterized by: The method comprises the following steps: Step 1: Construction preparation: Plan the construction area in different zones and layers; Step 2: Route planning: Plan the movement route of the sand paving equipment in the construction area and the construction parameters of the construction equipment; Step 3: Equipment in place: The sand-laying equipment moves into the construction area and drops anchor. The sand-laying equipment includes a belt sand ship, a paving ship and a positioning flat barge; Step 4, construction: start the sand spreading equipment and run it according to the operating parameters set in the above step 3. The belt sand ship supplies sand to the paving ship, the paving ship spreads sand underwater, and the positioning flat barge positions and fixes the paving ship. The paving ship spreads sand for 8 minutes; Step 5: Ship moving and construction: After the paving ship has finished paving sand in step 4, the positioning flat barge is anchored and moves along the moving route planned in step 2 in cooperation with the paving ship. The paving ship and the positioning flat barge can sail in narrow waterways and shallow waterways to avoid the paving ship from running aground, and the work efficiency is greatly increased. At the same time, the belt sand ship is moved and followed up. After the positioning flat barge moves to the next sand paving area planned in step 1, the positioning flat barge is anchored and step 3 is repeated. This cycle is repeated until all the construction areas are paved with sand. Step 6. Inspection: Inspect the thickness and flatness of the sand layer laid in step 5 above. If qualified, it can be delivered. If unqualified, it is necessary to readjust the moving route of the sand-laying equipment and the construction equipment parameters for re-paving.

8. The control construction method of a mobile high-precision underwater layered sand-laying equipment according to claim 7 is characterized by: When the belt sand ship supplies sand to the paving ship in the step 3, the stern of the belt sand ship is the center of the circle, so that the sand outlet swings back and forth at a uniform speed in a fan shape, so as to achieve uniform paving of the sand in the sand paving equipment.

Images