Suitable for laying method under high flow rate

Abstract

The present invention relates to the field of underwater engineering technology, and in particular to a method for laying a layout under high flow rates; comprising the following steps: S1, rolling up; S2, preparatory work before laying; S3, hoisting the layout roll to a construction location; S4, laying; S5, laying completion; the layout of the technical solution has a first ballast member and a second ballast member fixed at both ends when rolling up, so that during underwater laying, the two ends of the layout are pressed into mud to prevent displacement or floating of the two ends of the layout under high flow rates, thereby enhancing resistance to water flow and wave impact, reducing the time for later adjustment and correction, improving the stability, safety and efficiency of underwater laying, and reducing maintenance costs and environmental impacts.

Description

Technical Field

[0001] The invention relates to the technical field of underwater engineering, and in particular to an arrangement and laying method suitable for use under high flow rates. Background Art

[0002] In the current underwater laying technology of the arrangement, the two ends are usually ballasted separately, or one end is ballasted and the other end is fixed with heavy objects such as stones; because the arrangement itself is light in weight and has a large plane size, the laying work is usually carried out during the low tide period or when the flow rate is low to reduce the impact of the water flow on the stability of the arrangement. However, this method has many limitations and disadvantages, especially under high flow conditions, the construction difficulty is significantly increased, affecting the laying quality and engineering stability.

[0003] Firstly, due to the limitation of water flow conditions, the laying time window is short and the construction efficiency is low. As the existing laying method relies on low flow conditions, when the water is deep, fast or the flow direction is turbulent, it is easy to cause tearing due to the water flow, and it is impossible to carry out efficient operations under the conditions of higher flow rates or rapid tidal changes, resulting in a limited construction period and difficulty in meeting the urgent construction period requirements.

[0004] Secondly, the existing ballasting method has poor stability under high flow conditions. When the water flow rate is high, heavy objects such as stones are used for ballasting, but the stones are difficult to quickly and accurately fix and arrange. The arrangement may drift or even be lifted or flipped by the water flow, causing the laying position to shift and affecting the overall stability. At the same time, due to the directionality and variability of the water flow, the stone ballasting method easily leads to concentrated force in certain areas, while other areas are under-stressed, causing local bulges or tears, thus affecting the laying effect. Moreover, under high flow conditions, the arrangement is easily affected by complex hydrodynamic effects such as turbulence and backflow during the laying process, making it difficult to maintain a stable deployment, increasing the difficulty of adjustment, and may even lead to the need for re-laying, further extending the construction period.

[0005] Therefore, there is an urgent need for an improved laying technology that can adapt to high flow rate environments in order to improve laying efficiency, enhance layout stability, and ensure project quality and safety. Summary of the invention

[0006] In view of the deficiencies existing in the above-mentioned prior art, the present invention provides a layout and laying method suitable for high flow rates without the need for secondary ballasting at both ends of the layout and with high construction efficiency.

[0007] The present invention provides a method for laying out a structure under high flow rate, comprising the following steps:

[0008] S1. Reel:

[0009] Before the arrangement is rolled up, a first ballast member is connected and fixed to the edge of one end of the arrangement, and the end of the arrangement fixed with the first ballast member is used as the starting end of the roll, and the roll is wound on the reel. Before the winding is completed, a second ballast member is fixed to the edge of the other end of the arrangement, and the arrangement continues to be rolled up to form an arrangement roll;

[0010] S2. Preparation work before laying out:

[0011] The arrangement roll after the arrangement in step S1 is transferred to the arrangement ship, the arrangement roll is connected to the sling on the arrangement ship by using a sling, and traction ropes are respectively fixed to the two ends of the roll, and the other ends of the traction ropes are fixed to the traction columns at the two ends of the arrangement ship;

[0012] S3. Hoist the layout roll to the construction location:

[0013] When the laying ship arrives at the construction site, the lifting device first lifts the laying roll off the laying ship and then lowers it to the underwater laying position, and then releases the connection between the lifting rope and the laying roll;

[0014] S4. Arrangement:

[0015] After the laying ship is moved for a certain distance, the traction rope is tightened, the laying ship continues to move, the traction rope pulls the drum to move and rotate at the same time, and the arrangement begins to be laid. One end of the arrangement fixed with the second ballast piece is used as the starting end of the laying. The second ballast piece is pressed into the mud and fixed to prevent the end of the arrangement from being lifted up by the water flow during the laying process;

[0016] S5, layout completed:

[0017] The laying vessel continues to move, and when the first ballast member is detached from the drum and pressed into the mud under the rolling action of the drum, the laying of the arrangement is completed.

[0018] In the present technical solution, the first ballast member and the second ballast member are fixed at both ends of the arrangement when it is rolled up, so that during underwater laying, the two ends of the arrangement are pressed into the mud to prevent displacement or floating at high flow rates, thereby enhancing resistance to water flow and wave impact, reducing the time for later adjustments and corrections, and improving the stability, safety and efficiency of underwater laying, while reducing maintenance costs and impact on the environment.

[0019] In some embodiments of the present application, in step S4, before the layout roll is hoisted to the underwater laying position, the layout roll is adjusted so that the second ballast member is located close to the laying vessel, so that when the roll starts to rotate for laying, the second ballast member can be crushed by the layout roll, and the second ballast member is pressed into the mud under the action of the gravity of the layout roll, thereby fixing the starting end of the layout during laying and preventing the starting end from being lifted up by the water flow.

[0020] In some embodiments of the present application, in order to further increase the ability of both sides of the arrangement to resist the impact of large water flows, in step S4, during the arrangement laying process, a pressure plate assembly is used to press both sides of the laid arrangement into the mud, so that during the laying process, the starting end and both sides of the arrangement are pressed into the mud and fixed, effectively preventing the arrangement from floating under the impact of large water flows and affecting the laying quality.

[0021] In some embodiments of the present application, the pressure plate assembly has two groups, which are respectively arranged at the two ends of the reel, and its structure includes:

[0022] A pressing plate, which is arranged near one side of the arrangement roll, and whose plane is perpendicular to the axis of the roll, and can press the side of the arrangement roll into the mud during laying;

[0023] A rotating shaft is arranged at the center of the pressing plate, and the outer end of the rotating shaft is connected to the end of the reel through a connecting rod;

[0024] A counterweight block is fixed at one end of the connecting rod close to the pressure plate. The pressure plate presses the side edges of the arrangement into the mud with the cooperation of the counterweight block, thereby improving the ability of the two side edges of the arrangement to resist the erosion of large water flows. The counterweight of the counterweight block can be adjusted according to different geological conditions, so that the pressure plate can still be pressed into the mud to an appropriate depth under different geological conditions to stably fix the side edges of the arrangement.

[0025] In some embodiments of the present application, the two pressure plate assemblies are mirror-imaged relative to the central axis of the arrangement, and the pressure plate and its adjacent side edge of the arrangement are located 5-15 cm apart, so that when the drum drives the pressure plate to move, the pressure plate can press the side edge of the arrangement into the mud, thereby preventing the pressure plate from being too far away from the side edge of the arrangement and failing to provide good ballast for the side of the arrangement, which can cause the side of the arrangement to be easily lifted up by high-velocity water flow, which can cause tearing in severe cases.

[0026] In some embodiments of the present application, the pressure plate is a disc-shaped structure, the rotation of the reel drives the rotation shaft to rotate through the connecting rod, and the rotation shaft drives the pressure plate to rotate;

[0027] During the laying process of step S4, the pressure plate assembly is located behind the arrangement roll, the traction rope pulls the drum to move and rotate at the same time, and the connecting rod drives the rotating shaft to move and rotate synchronously. During the arrangement laying process, the pressure plate then presses the two side edges of the laid arrangement into the mud.

[0028] In some embodiments of the present application, in order to further prevent the arrangement from floating under the action of a large water flow, a pressure roller is provided between the two pressure plate assemblies, and the two ends of the pressure roller are respectively connected to the two rotating shafts;

[0029] During the arrangement and laying process in step S4, the traction rope pulls the drum to move and rotate at the same time, and the connecting rod drives the rotating shaft to move and rotate synchronously. During the arrangement and laying process, the pressure plate then presses the two side edges of the laid arrangement into the mud, and at the same time the pressure roller presses the middle part of the arrangement to fit the mud surface. Even under the action of a large water flow, since the end of the arrangement is fixed by the second ballast piece pressed into the mud, the two side edges are pressed into the mud, and the middle part is pressed to fit the mud surface, the arrangement fits tightly on the mud surface and will not float.

[0030] In some embodiments of the present application, in order to make the arrangement rolls neat and tight in step S1 so as to facilitate the smooth subsequent laying, a strip groove extending along the axial direction is provided on the surface of the roll;

[0031] In step S1, after the first ballast member is fixed at one end of the arrangement, the first ballast member is placed in the groove of the reel, and the first ballast member is fixed on the reel as the starting end of the reel to start reeling.

[0032] In some embodiments of the present application, in step S1, after the arrangement is completed, the arrangement roll is tied with a slipknot rope so that the second ballast member and the arrangement roll form a whole, and the arrangement roll will not be dispersed during the subsequent transfer and hanging process.

[0033] In some embodiments of the present application, the diameter of the pressure plate and the weight of the counterweight block are configured according to the geological conditions of the construction area, so that the pressure plate can press the two side edges of the arrangement into the mud to a depth of 10-15 cm to ensure that the side edges of the arrangement will not be washed out by the water flow when pressed into the mud, and can resist the erosion of large water flows.

[0034] Based on the above technical solution, the first ballast member and the second ballast member are fixed at both ends of the arrangement when it is rolled up, so that during underwater laying, the two ends of the arrangement are pressed into the mud to prevent the two ends of the arrangement from displacement or floating under high flow rate, thereby enhancing the resistance to water flow and wave impact, reducing the time for later adjustment and correction, improving the stability, safety and efficiency of underwater laying, and reducing maintenance costs and environmental impact;

[0035] The setting of the pressing plate assembly enables the two sides of the arrangement to be pressed into the mud while being laid, thereby improving the ability of the two sides of the arrangement to resist the scouring of large water flows, avoiding lateral deviation of the arrangement, ensuring that the laying axis is consistent with the designed position, and being able to complete positioning and fixing simultaneously, shortening the construction period and reducing the cost of repeated adjustments;

[0036] The pressure rollers set between the pressure plates can press the middle area of ​​the layout to fit the mud surface, so that the layout fits tightly on the mud surface, avoiding floating or kinking of the layout due to uneven buoyancy, keeping the laying surface flat, further increasing the layout's ability to resist the impact of large water flows, and reducing the need for subsequent adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0038] Figure 1 It is a left side view of the arrangement roll and the pressing plate assembly according to an embodiment of the present invention;

[0039] Figure 2 A top view of an arrangement roll and a pressing plate assembly according to an embodiment of the present invention;

[0040] Figure 3 It is a left view of the paving vessel after the sling, the paving roll and the pressing plate assembly are connected in the embodiment of the present invention;

[0041] Figure 4 It is a top view of the connection between the spreader of the laying ship, the laying roll and the pressing plate assembly in the embodiment of the present invention;

[0042] Figure 5 It is a left view of the embodiment of the present invention in which the slinger slings the arrangement roll and the pressing plate assembly above the mud surface;

[0043] Figure 6 It is a top view of the lifting device in the embodiment of the present invention lifting the arrangement roll and the pressing plate assembly above the mud surface;

[0044] Figure 7 It is a left view of the embodiment of the present invention when the lifting device is lifting the arrangement roll and the pressing plate assembly to the mud surface;

[0045] Figure 8 It is a top view of the embodiment of the present invention when the lifting device lifts the arrangement roll and the pressing plate assembly to the mud surface;

[0046] Fig. 9 It is a left view of the embodiment of the present invention when the traction rope pulls the arrangement roll and the pressing plate assembly to start laying;

[0047] Fig.10It is a top view of the embodiment of the present invention when the traction rope pulls the arrangement roll and the pressing plate assembly to start laying;

[0048] Fig.11 It is a left view of the embodiment of the present invention when the traction rope pulls the arrangement roll and the pressing plate assembly to lay out;

[0049] Fig.12 for Fig.11 A magnified view of part A;

[0050] Fig.13 It is a top view of the traction rope pulling the arrangement roll and the pressing plate assembly to lay the cloth in the embodiment of the present invention;

[0051] Fig.14 is a schematic structural diagram of the first ballast member in an embodiment of the present invention when it is about to separate from the reel;

[0052] Fig.15 It is a schematic diagram of the structure when the first ballast member is separated from the reel in an embodiment of the present invention;

[0053] Fig.16 A top view of an arrangement roll and a pressing plate assembly with a pressing roller according to another embodiment of the present invention.

[0054] In the figure:

[0055] 10. Arrangement; 11. First ballast member; 12. Second ballast member; 20. Reel; 21. Groove; 22. Reel shaft; 30. Pressure plate assembly; 31. Pressure plate; 311. Rotating shaft; 32. Connecting rod; 33. Counterweight; 34. Pressure roller; 40. Laying vessel; 41. Lifting rope; 42. Lifting device; 43. Towing rope; 44. Towing column; 50. Mud surface. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only 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 making creative work are within the scope of protection of the present invention.

[0057] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 should not be understood as a limitation on the present invention.

[0058] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] The arrangement and laying method of this embodiment is applicable to high flow rate, and specifically includes the following steps:

[0061] S1. Reel:

[0062] Before the arrangement 10 is rolled up, the first ballast member 11 is connected and fixed to one end edge of the arrangement 10, and the end of the arrangement 10 fixed with the first ballast member 11 is used as the starting end of the roll, and the roll is wound on the reel 20;

[0063] In order to make the arrangement 10 neat and compact, so as to facilitate the subsequent laying, a strip groove 21 extending along its axial direction is provided on the surface of the roll 20. After the first ballast member 11 is fixed on one end of the arrangement 10, the first ballast member 11 is placed in the groove 21 of the roll. Figure 1 As shown, one end of the arrangement with the first ballast member 11 fixed thereto is fixed on the reel 20, and the reel is wound using the end as the starting end of the reel; the groove 21 is provided on the surface of the reel 20 to facilitate the reeling of the arrangement 10, and the first ballast member 11 does not occupy the reel space, so that the reeling of the arrangement of a larger length can be achieved;

[0064] Before the arrangement 10 is wound, a second ballast member 12 is fixed to the other end edge of the arrangement 10 as the starting end of the arrangement 10, and then the arrangement 10 continues to be wound on the reel 20 to form a complete arrangement roll;

[0065] In this embodiment, the first ballast member 11 and the second ballast member 12 are block structures, which are convenient for pressing into the mud, and their length is consistent with the width of the arrangement 10, or the first ballast member 11 and the second ballast member 12 are composed of a plurality of block structures, and the block structures are evenly distributed along the width direction of the arrangement, so that both ends of the arrangement can be pressed into the mud;

[0066] After the arrangement is completed, the arrangement roll is tied with a slipknot rope (not shown in the figure) so that the second ballast member 12 and the arrangement roll form a whole, which is convenient for the subsequent transfer and hanging of the arrangement roll to remain intact and will not fall apart;

[0067] In order to facilitate the rolling of the arrangement roll during the subsequent underwater laying, a drum shaft 22 is provided at both ends of the drum 20. The drum shaft 22 drives the drum 20 to move and rotate synchronously, and the arrangement roll rotates synchronously for laying. In order to achieve stable ballasting at the ends and both sides of the arrangement 10 after laying, the drum 20 of this embodiment is also connected to a pressure plate assembly 30 that can press both sides of the arrangement into the mud. The pressure plate assembly 30 has two groups, which are respectively arranged at the two ends of the drum 20, such as Figure 1-Figure 2 As shown, the structure of the pressure plate assembly 30 includes:

[0068] The pressing plate 31 is a disc-shaped structure, and is disposed close to one side of the arrangement roll. The plane where the pressing plate 31 is located is perpendicular to the axis of the roll 20, so that the pressing plate 31 can press the side of the arrangement 10 into the mud during laying;

[0069] A rotating shaft 311 is disposed at the center of the pressure plate 31. The outer end of the rotating shaft 311 is connected to the reel shaft 22 of the reel 20 via a connecting rod 32. The reel shaft 22 drives the rotating shaft 311 to move via the connecting rod 32, so that the pressure plate 31 moves synchronously with the reel 20.

[0070] The counterweight block 33 is fixed at one end of the connecting rod 32 close to the pressure plate 31. The pressure plate 31 presses the side of the arrangement 10 into the mud under the cooperation of the gravity of the counterweight block 33, thereby improving the ability of the two sides of the arrangement to resist the scouring of large water flows. The counterweight of the counterweight block 33 can be adjusted according to different geological conditions, so that the pressure plate 31 can still be pressed into the mud to a suitable depth under different geological conditions to stably fix the side of the arrangement 10, thereby avoiding the need for stone ballast in the conventional paving process under high flow conditions, and the block stone is difficult to quickly and accurately fix the arrangement, and the arrangement may drift or even be lifted or turned over by the water flow, resulting in the displacement of the laying position, affecting the overall stability.

[0071] Continue to see Figure 2 , two pressing plate assemblies 30 are mirror-imaged relative to the central axis of the arrangement 10, and two pressing plates 31 are arranged opposite to each other. In this embodiment, the distance between the pressing plate 31 and the side edge of the adjacent arrangement 10 is 5-15 cm, so that when the reel 20 drives the pressing plate 31 to move, the pressing plate 31 can press the side edge of the arrangement 10 into the mud, so as to avoid the pressure plate 31 being too far away from the side edge of the arrangement 10 and failing to play a good ballast role on the side of the arrangement 10, and the side of the arrangement is easily lifted by the high-speed water flow or even causes tearing of the arrangement;

[0072] In order to avoid interference of the pressing plate assembly 30 during winding, in this embodiment, after the arrangement of the cloth roll is completed and tied with a slipknot rope, the connecting rod 32 of the pressing plate assembly 30 is connected to the drum shaft 22 of the drum 20, and the arrangement roll and the pressing plate assembly 30 are integrated;

[0073] S2. Preparation work before laying out:

[0074] The layout roll and the press plate assembly 30 which have been combined into a whole in step S1 are transferred to the layout ship 40, such as Figure 3 As shown, the slings 41 are used to connect the arrangement roll and the pressing plate assembly 30 to the slings 42 on the laying ship 40, and the outer ends of the connecting rods 32 of the two pressing plate assemblies 30 are fixed with traction ropes 43, and the other ends of the traction ropes 43 are fixed to the traction columns 44 at both ends of the laying ship 40, as shown in FIG. Figure 4 As shown;

[0075] S3. Hoist the layout roll to the construction location:

[0076] When the laying vessel 40 arrives at the construction site, the lifting device 42 first lifts the laying roll and the pressing plate assembly 30 from the laying vessel and then slowly lowers them to the underwater laying position. Figure 5-Figure 6 As shown;

[0077] like Figure 7-Figure 8 As shown, when the lifting rope 41 continues to lower the cloth arrangement roll and the pressing plate assembly 30 until they are in contact with the mud surface 50, the connection between the lifting rope 41 and the cloth arrangement roll and the pressing plate assembly 30 is released, and the binding of the slipknot rope to the cloth arrangement roll is released. At this time, the traction rope 43 is in a relaxed state. After the lifting rope 41 is released, the sling 42 turns around.

[0078] S4. Arrangement:

[0079] After moving the laying ship 40 positions for a certain distance, Figure 9-10 As shown, the traction rope 43 is tightened, the laying ship continues to move, the traction rope 43 pulls the connecting rod 32, and the connecting rod drives the reel and the pressing plate 31 to move and rotate at the same time, and the laying of the arrangement begins;

[0080] In this embodiment, one end of the arrangement 10 fixed with the second ballast member 12 is used as the starting end during laying. In order to better ballast and fix the starting end, that is, the second ballast member 12 can be better pressed into the mud, before the arrangement roll is hoisted to the underwater laying position, the arrangement roll is adjusted so that the second ballast member 12 is located close to the laying ship, so that when the drum 20 starts to rotate for laying, the second ballast member 12 can be rolled by the arrangement roll, and the second ballast member 12 is pressed into the mud under the action of the gravity of the arrangement roll, fixing the starting end of the arrangement 10 during laying, and preventing the starting end from being lifted by the water flow;

[0081] The pressing plate assembly 30 of this embodiment is located behind the arrangement roll, and the traction rope 43 is enough to pull the reel 20 to roll through the connecting rod 32, and at the same time, the connecting rod 32 drives the pressing plate 31 to roll synchronously. During the laying process of the arrangement 10, the pressing plate 31 then presses the two sides of the laid arrangement 10 into the mud. Figure 11-13 As shown, during the laying process, the starting end and both sides of the arrangement 10 are pressed into the mud and fixed, which effectively prevents the starting end and both sides of the arrangement 10 from floating under the impact of large water flow, affecting the laying quality;

[0082] The counterweight of the counterweight block 33 can be adjusted according to different geological conditions, so that the pressing plate 31 can still be pressed into the mud to a suitable depth under different geological conditions, so as to stably fix the side of the arrangement 10, thereby avoiding the need for stone riprap during conventional paving under high flow conditions, and the block stone is difficult to be quickly and accurately fixed and arranged, and the arrangement may drift, or even be lifted or turned over by the water flow, resulting in the displacement of the paving position, affecting the overall stability;

[0083] S5, layout completed:

[0084] The laying ship 40 continues to move, as Fig.14 As shown in FIG. 1 , the first ballast member 11 is about to be separated from the drum 20. The laying ship continues to move, and the first ballast member 11 is separated from the groove 21 of the drum. Fig.15 As shown, when the first ballast member 11 is subsequently pressed into the mud under the rolling action of the drum 20, the laying of the arrangement is completed.

[0085] Specifically, the diameter of the pressing plate 31 and the weight of the counterweight 33 are configured according to the geological conditions of the construction area, so that the pressing plate 31 can press the two side edges of the arrangement into the mud to a depth of 10-15 cm to ensure that the side edges of the arrangement will not be washed out by the water flow when pressed into the mud, and can resist the erosion of large water flows.

[0086] In order to further prevent the arrangement from floating under the action of a large water flow, in another embodiment, a pressure roller 34 is arranged between the two pressure plate assemblies 30. Fig.16 As shown; both ends of the pressure roller 34 are connected to two rotating shafts 311 respectively; in the step S4 arrangement laying process, the traction rope 43 pulls the connecting rod 32, the connecting rod 32 drives the reel to roll, and the connecting rod drives the rotating shaft to rotate at the same time, during the laying process of the arrangement 10, the pressure plate 31 then presses the two side edges of the laid arrangement 10 into the mud, and at the same time the pressure roller 34 presses the middle part of the arrangement to fit the mud surface, even under the action of a larger water flow, because the starting end of the laying of the arrangement 10 is fixed by the second ballast piece 12 pressed into the mud, the two side edges are pressed into the mud, and the arrangement fits tightly on the mud surface, avoiding floating or kinking of the arrangement due to uneven buoyancy, keeping the laying surface flat, further increasing the ability of the arrangement to resist the impact of large water flows, and reducing the need for subsequent adjustments.

[0087] Based on the above technical solution, the first ballast member and the second ballast member are fixed at both ends of the arrangement when it is rolled up, so that during underwater laying, the two ends of the arrangement are pressed into the mud to prevent the two ends of the arrangement from displacement or floating under high flow rate, thereby enhancing the resistance to water flow and wave impact, reducing the time for later adjustment and correction, improving the stability, safety and efficiency of underwater laying, and reducing maintenance costs and environmental impact;

[0088] The setting of the pressing plate assembly enables the two sides of the arrangement to be pressed into the mud while being laid, thereby improving the ability of the two sides of the arrangement to resist the scouring of large water flows, avoiding lateral deviation of the arrangement, ensuring that the laying axis is consistent with the designed position, and being able to complete positioning and fixing simultaneously, shortening the construction period and reducing the cost of repeated adjustments;

[0089] The pressure rollers set between the pressure plates can press the middle area of ​​the layout to fit the mud surface, so that the layout fits tightly on the mud surface, avoiding floating or kinking of the layout due to uneven buoyancy, keeping the laying surface flat, further increasing the layout's ability to resist the impact of large water flows, and reducing the need for subsequent adjustments.

[0090] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0091] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for laying out materials under high flow rates, characterized in that: The steps include: S1. Reel: Before the arrangement is rolled up, a first ballast member is connected and fixed to the edge of one end of the arrangement, and the end of the arrangement fixed with the first ballast member is used as the starting end of the roll, and the roll is wound on the reel. Before the winding is completed, a second ballast member is fixed to the edge of the other end of the arrangement, and the arrangement continues to be rolled up to form an arrangement roll; S2. Preparation work before laying out: The arrangement roll after the arrangement in step S1 is transferred to the arrangement ship, the arrangement roll is connected to the sling on the arrangement ship by using a sling, and traction ropes are respectively fixed to the two ends of the roll, and the other ends of the traction ropes are fixed to the traction columns at the two ends of the arrangement ship; S3. Hoist the layout roll to the construction location: When the laying ship arrives at the construction site, the lifting device first lifts the laying roll off the laying ship and then lowers it to the underwater laying position, and then releases the connection between the lifting rope and the laying roll; S4. Arrangement: After the laying ship is moved for a certain distance, the traction rope is tightened, the laying ship continues to move, the traction rope pulls the drum to move and rotate at the same time, and the arrangement begins to be laid. One end of the arrangement fixed with the second ballast piece is used as the starting end of the laying. The second ballast piece is pressed into the mud and fixed to prevent the end of the arrangement from being lifted up by the water flow during the laying process; S5, layout completed: The laying vessel continues to move, and when the first ballast member is detached from the drum and pressed into the mud under the rolling action of the drum, the laying of the arrangement is completed.

2. The arrangement and laying method suitable for high flow rate according to claim 1 is characterized in that: In step S4, before the laying roll is hoisted to the underwater laying position, the laying roll is adjusted so that the second ballast member is located close to the laying vessel, so that when the roll starts to rotate for laying, the second ballast member can be crushed by the laying roll, and the second ballast member is pressed into the mud under the action of the gravity of the laying roll.

3. The arrangement and laying method suitable for high flow rate according to claim 1, characterized in that: In step S4, during the arrangement laying process, a pressing plate assembly is used to press both sides of the laid arrangement into the mud, so that during the laying process, the starting end and both sides of the arrangement are pressed into the mud and fixed.

4. The arrangement and laying method suitable for high flow rate according to claim 3 is characterized in that: The pressure plate assembly has two groups, which are respectively arranged at the two ends of the reel, and its structure includes: A pressing plate, which is arranged near one side of the arrangement roll, and whose plane is perpendicular to the axis of the roll, and can press the side of the arrangement roll into the mud during laying; A rotating shaft is arranged at the center of the pressing plate, and the outer end of the rotating shaft is connected to the end of the reel through a connecting rod; A counterweight block is fixed to one end of the connecting rod close to the pressure plate. The pressure plate presses the side edges of the arrangement into the mud with the cooperation of the counterweight block, thereby improving the ability of the two sides of the arrangement to resist the scouring of large water flows.

5. The arrangement and laying method suitable for high flow rate according to claim 4 is characterized in that: The two pressure plate assemblies are mirror-imaged relative to the central axis of the arrangement, and the distance between the pressure plate and the adjacent side edge of the arrangement is 5-15 cm, so that when the drum drives the pressure plate to move, the pressure plate can press the side edge of the arrangement into the mud.

6. The arrangement and laying method suitable for high flow rate according to claim 5, characterized in that: The pressure plate is a disc-shaped structure, the rotation of the reel drives the rotation shaft to rotate through the connecting rod, and the rotation shaft drives the pressure plate to rotate; During the laying process of step S4, the pressure plate assembly is located behind the arrangement roll, the traction rope pulls the drum to move and rotate at the same time, and the connecting rod drives the rotating shaft to move and rotate synchronously. During the arrangement laying process, the pressure plate then presses the two side edges of the laid arrangement into the mud.

7. The arrangement and laying method suitable for high flow rate according to claim 4, characterized in that: A pressing roller is arranged between the two pressing plate assemblies, and two ends of the pressing roller are respectively connected to the two rotating shafts; During the arrangement and laying process of step S4, the traction rope pulls the drum to move and rotate at the same time, and the connecting rod drives the rotating shaft to move and rotate synchronously. During the arrangement and laying process, the pressure plate then presses the two side edges of the laid arrangement into the mud, and at the same time the pressure roller presses the middle part of the arrangement to fit the mud surface. Even under the action of water flow, since the end of the arrangement is fixed by the second ballast piece pressed into the mud, the two side edges are pressed into the mud, and the middle part is pressed to fit the mud surface, the arrangement fits tightly on the mud surface and will not float.

8. The arrangement and laying method suitable for high flow rate according to claim 1, characterized in that: In order to make the arrangement rolls neat and tight in step S1 so as to facilitate the subsequent laying, a strip groove extending along the axial direction is provided on the surface of the roll; In step S1, after the first ballast member is fixed at one end of the arrangement, the first ballast member is placed in the groove of the reel, and the first ballast member is fixed on the reel as the starting end of the reel to start reeling.

9. The arrangement and laying method suitable for high flow rate according to claim 8, characterized in that: In step S1, after the arrangement is completed, the arrangement roll is tied with a slipknot rope so that the second ballast member and the arrangement roll form a whole, and the arrangement roll will not be scattered during the subsequent transfer and hanging process.

10. The arrangement and laying method suitable for high flow rate according to claim 4, characterized in that: The diameter of the pressing plate and the weight of the counterweight are configured according to the geological conditions of the construction area, so that the pressing plate can press the two sides of the arrangement into the mud to a depth of 10-15 cm to ensure that the sides of the arrangement will not be washed out by water when pressed into the mud.

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