Anti-scouring solidified soil pouring device

Abstract

The present invention relates to the technical field of offshore grouting, and specifically to an anti-scouring solidified soil grouting device, which includes a mobile grouting barrel coaxially installed on a steel pipe column, the mobile grouting barrel is in a circular ring shape, and a grouting cavity is arranged inside the mobile grouting barrel; a grouting connection port connected to the grouting cavity is arranged on the upper side of the mobile grouting barrel, the grouting connection port is connected to one end of a pumping pipeline, and the pumping pipeline is connected to the output end of a solidified soil pumping device; a plurality of spraying pipes connected to the grouting cavity are arranged below the mobile grouting barrel, and a control valve is arranged on the spraying pipe; a connecting ring is provided on the outer wall of the mobile grouting barrel, the connecting ring is connected to one end of a chain, and the other end of the chain is connected to the working end of a reeling and unwinding device. The reeling and unwinding device of this technical solution drives the mobile grouting barrel to move down along the steel pipe column to the mud surface on the seabed, and the solidified soil enters the grouting cavity through the pumping pipeline and naturally settles to the target pumping area around the bottom side of the steel pipe column through the spraying pipe.

Description

Technical Field

[0001] The invention relates to the technical field of offshore grouting, in particular to an anti-scouring solidified soil grouting device. Background Art

[0002] Offshore building foundations are susceptible to scouring due to seabed surges, leading to the loss of surrounding sediment and potentially compromising the foundation's stability. From a foundation consolidation technology perspective, anti-scouring protection is necessary, and one such technology is known as soil consolidation. During construction, soil consolidation must be pumped from a construction vessel. However, the target area for this pumping is around the submarine pile foundation. The distance from the vessel's deck to the seabed is typically tens to dozens of meters. With the development of deep-sea wind power, the water depth is also increasing, making construction increasingly difficult. Existing soil consolidation construction techniques typically involve mixing the soil aboard a construction vessel and then pumping it directly to the designated area. To fully cover the foundation with soil consolidation, the typical construction method involves a construction vessel sailing around a jacket on the sea surface. A pumping pipe connected to the vessel's pumping equipment is then rotated and cast around the pile foundation. This construction method requires the construction vessel to move extensively across the sea surface, consuming significant manpower and resources. Furthermore, the pumping pipe fluctuates with the seawater, making it difficult to control the uniformity of the soil consolidation. Summary of the Invention

[0003] In view of the above problems, it is necessary to provide an anti-scouring solidified soil pouring device to address the existing technical problems.

[0004] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0005] An anti-scouring solidified soil grouting device, the grouting device is installed on a steel pipe column vertically extending to the mud surface of the seabed, the grouting device includes a mobile grouting barrel coaxially installed on the steel pipe column, the grouting mobile grouting barrel is annular, and a grouting cavity is arranged inside the mobile grouting barrel; a grouting connection port communicating with the grouting cavity is arranged on the upper side of the mobile grouting barrel, the grouting connection port is connected to one end of a pumping pipeline, and the pumping pipeline is connected to the output end of the solidified soil pumping device; a plurality of spraying pipes communicating with the grouting cavity are arranged below the mobile grouting barrel, and the spraying pipes are connected to the grouting cavity. The chains are distributed at equal angles around the axis of the mobile grouting barrel, and a control valve is provided at the spraying pipe; a connecting ring is provided on the outer wall of the mobile grouting barrel, the connecting ring is connected to one end of the chain, and the other end of the chain is connected to the working end of the reeling device, which is installed on the top of the steel pipe column or on the platform or on the construction ship; the reeling device drives the mobile grouting barrel to move down along the axis of the steel pipe column to the mud surface on the seabed, and the solidified soil enters the grouting cavity through the pumping pipeline and naturally settles to the target pumping area around the bottom of the steel pipe column through the spraying pipe.

[0006] Preferably, a movable bottom plate is coaxially arranged in the grouting chamber of the movable grouting barrel, the circumferential side of the movable bottom plate is in contact with the inner wall of the grouting chamber, and the movable bottom plate divides the lower part of the grouting chamber into an air inlet chamber, and an air supply pipe is arranged on one side of the air inlet chamber, and the air inlet chamber is connected to the air pipe and the air source through the air supply pipe; a discharge port is arranged on the movable bottom plate at the same position as the axis of the spraying pipe, and a discharge pipe is arranged below the discharge port, and the discharge pipe is inserted into the spraying pipe.

[0007] Preferably, the discharge port is in the shape of a cone with the opening gradually increasing upwards.

[0008] Preferably, the bottom opening of the air supply pipe is located at the bottom of the grouting cavity, and the bottom opening of the air supply pipe is arranged vertically upward; the top end of the air supply pipe extends to the top of the movable grouting barrel, and the air supply pipe is fixedly installed on the top of the air inlet cavity.

[0009] Preferably, the movable grouting barrel is provided with a surrounding variable weight cavity on the peripheral side of the grouting cavity, and a plurality of water outlets are provided on the top of the variable weight cavity, and the water outlets are distributed at equal intervals around the axis of the movable grouting barrel; a piston ring is coaxially provided in the variable weight cavity, and the peripheral side of the piston ring is in contact with the inner wall of the variable weight cavity, and the piston ring moves along the axis of the movable grouting barrel to change the water content in the variable weight cavity.

[0010] Preferably, a plurality of connecting rods are provided on the peripheral side of the movable bottom plate, the connecting rods are fixedly connected to the bottom end of the piston ring, and the piston ring and the movable bottom plate move synchronously; the connection between the air intake chamber and the variable weight chamber is provided with waist-shaped holes with the same number as the connecting rods, the waist-shaped holes extend along the moving path of the connecting rods, the connecting rods are located in the waist-shaped holes and move in a limited manner, and the movable bottom plate blocks the waist-shaped holes.

[0011] Preferably, the inner wall of the grouting cavity is provided with a surrounding first limit block, and when the upper side of the movable bottom plate is in contact with the bottom of the first limit block, the piston ring is in contact with the upper end of the variable weight cavity to discharge all the water in the variable weight cavity.

[0012] Preferably, a plurality of balls are installed on the inner wall of the movable grouting tube, and the balls are distributed at equal intervals around the axis of the movable grouting tube, and the balls fit the outer wall of the steel pipe column.

[0013] Preferably, a plurality of limiting grooves are provided on the steel pipe column, the limiting grooves extending along the axis of the steel pipe column, the limiting grooves being evenly spaced around the axis of the steel pipe column, and the balls moving within the limiting grooves.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First, the present invention drives the pumping pipeline down to the mud surface on the seabed by the mobile grouting barrel, and pumps the solidified soil into the grouting cavity of the mobile grouting barrel. The solidified soil in the grouting cavity flows out from the spraying pipes evenly distributed around the bottom of the mobile grouting barrel and naturally settles to the target pumping area. The spraying pipes are distributed at equal angles around the axis of the mobile grouting barrel, ensuring that the solidified soil is evenly distributed after settlement, and the influence of seawater movement is greatly reduced.

[0016] Secondly, the present invention uses a reel-and-wind device in conjunction with a chain to pull the mobile grouting barrel to move on the steel pipe column, so that workers can install pumping pipelines above the water surface without the need for divers to dive to the seabed for operation, which is convenient and quick. The movable bottom plate slidably installed in the grouting chamber can drive the piston ring to move downward when the mobile grouting barrel moves downward, so that the variable weight chamber of the mobile grouting barrel is filled with more seawater, increasing the mass of the mobile grouting barrel and moving the mobile grouting barrel downward faster. When the mobile grouting barrel moves upward, the gas filled in the air intake chamber can drive the movable bottom plate to move upward and discharge the water in the variable weight chamber, reducing the mass of the mobile grouting barrel, and cooperating with the buoyancy to make the mobile grouting barrel move upward quickly, thereby reducing the pressure on the working end of the reel-and-wind device.

[0017] Thirdly, the present invention converts the sliding friction between the mobile grouting barrel and the steel pipe column into rolling friction by moving the balls on the inner wall of the grouting barrel, thereby making the movement of the mobile grouting barrel along the steel pipe column smoother, and the balls move in a limited manner in the limit groove on the surface of the steel pipe column. The limit groove ensures that the mobile grouting barrel will not rotate when moving in the vertical direction, thereby preventing the pumping pipeline from being entangled with the steel pipe column due to the fluctuation of sea water during the process of the mobile grouting barrel driving the pumping pipeline to move down, which affects the subsequent upward movement of the mobile grouting barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of an anti-scour solidification soil pouring device in a first working state;

[0019] Figure 2 It is a top view of an anti-scour solidified soil pouring device;

[0020] Figure 3 This is a main view of an anti-scour solidification soil pouring device in a first working state;

[0021] Figure 4 yes Figure 3 Cross-sectional view at AA of FIG;

[0022] Figure 5 yes Figure 4 A partial enlarged view of point B;

[0023] Figure 6 yes Figure 4 A partial enlarged view of point C;

[0024] Figure 7 This is a main view of an anti-scour solidification soil pouring device in the second working state;

[0025] Figure 8 yes Figure 7 Cross-sectional view at DD of ;

[0026] Figure 9 yes Figure 8 A local enlarged view of point E;

[0027] Figure 10 yes Figure 8 A partial enlarged view of point F.

[0028] The numbers in the figure are: 1. Steel pipe column; 11. Limiting groove; 2. Movable grouting cylinder; 21. Grouting chamber; 211. Grouting connection port; 212. First limiting block; 22. Spraying pipe; 221. Control valve; 23. Connecting ring; 231. Chain; 24. Movable bottom plate; 241. Feeding port; 242. Feeding pipe; 243. Piston ring; 244. Connecting rod; 25. Air inlet chamber; 251. Air supply pipe; 26. Variable weight chamber; 261. Water outlet; 262. Waist-shaped hole; 27. Ball; 3. Pumping pipeline; 4. Rewinding and unwinding device. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 10 :

[0031] An anti-scour solidified soil grouting device is installed on a steel pipe column 1 that extends vertically to the mud surface of the seabed. The grouting device includes a mobile grouting barrel 2 coaxially installed on the steel pipe column 1. The grouting mobile grouting barrel 2 is annular, and a grouting cavity 21 is provided inside the mobile grouting barrel 2; a grouting connection port 211 connected to the grouting cavity 21 is provided on the upper side of the mobile grouting barrel 2, and the grouting connection port 211 is connected to one end of a pumping pipeline 3, and the pumping pipeline 3 is connected to the output end of the solidified soil pumping device; a plurality of spraying pipes 22 connected to the grouting cavity 21 are provided below the mobile grouting barrel 2, and the spraying pipes 22 are provided below the mobile grouting barrel 2. The pipes 22 are distributed at equal angles around the axis of the mobile grouting barrel 2, and a control valve 221 is provided at the spraying pipe 22; a connecting ring 23 is provided on the outer wall of the mobile grouting barrel 2, the connecting ring 23 is connected to one end of the chain 231, and the other end of the chain 231 is connected to the working end of the rewinding device 4, and the rewinding device 4 is installed on the top of the steel pipe column 1; the rewinding device 4 drives the mobile grouting barrel 2 to move down along the axis of the steel pipe column 1 to the mud surface on the seabed, and the solidified soil enters the grouting cavity 21 through the pumping pipeline 3 and naturally settles to the target pumping area around the bottom of the steel pipe column 1 through the spraying pipe 22.

[0032] The solidified soil grouting device in the present application is suitable for pile-type offshore wind power foundation construction. When working at sea, the workboat drives the steel pipe column 1 to move to the pile foundation mud surface position where solidified soil needs to be laid, and then the steel pipe column 1 is vertically inserted into the seabed mud surface, and the mobile grouting tube 2 is installed on the steel pipe column 1 from the top, and the grouting connection port 211 above the mobile grouting tube 2 is connected to the pumping pipeline 3, and the control valve 221 at the spraying pipe 22 below the mobile grouting tube 2 is closed. The control valve 221 can be an electric control switch such as a solenoid valve, and then the mobile grouting tube 2 moves down along the steel pipe column 1. The pumping pipeline 3 moves downward synchronously with the mobile grouting barrel 2. When the mobile grouting barrel 2 moves down to the mud surface on the seabed, the solidified soil pumping device is started to pump the solidified soil into the grouting cavity 21 of the grouting barrel 2. At this time, the control valve 221 opens the spraying pipe 22, and the solidified soil in the grouting cavity 21 flows out from the spraying pipes 22 evenly distributed around the bottom of the mobile grouting barrel 2 and naturally settles to the target pumping area. The spraying pipes 22 are distributed at equal angles around the axis of the mobile grouting barrel 2 to ensure that the solidified soil is evenly distributed after settlement, and the influence of seawater movement is greatly reduced. In this embodiment, the mobile grouting barrel 2 is annular and can The grouting tube 2 is a circular ring-embracing structure with a connecting shaft on one side and the other side of the device being openable and closed and locked by two upper and lower bolts. It can also be an annular tube with an opening on the upper part, which is sealed by a cover with bolts and a sealing ring on the upper side to ensure the airtightness of the internal grouting chamber 21. When the mobile grouting tube 2 moves down along the steel pipe column 1, after ensuring the airtightness of the connection between the pumping pipeline 3 and the grouting connection port 211, the solidified soil pumped into the pumping pipeline 3 can enter the sealed grouting chamber 21 and naturally settle through the control valve 221. In this embodiment, a connecting ring 23 can be provided on the outside of the mobile grouting tube 2. 23 connects the chain 231, and the chain 231 is connected to the reeling device 4 installed on the top of the steel pipe column 1. The reeling device 4 can be a winch or other device. The reeling device 4 can directly or cooperate with the pulley group to pull the mobile grouting barrel 2, so as to lower the mobile grouting barrel 2 to the mud surface on the seabed, and can also pull the mobile grouting barrel 2 out of the sea after the grouting is completed. In this embodiment, the movable mobile grouting barrel 2 allows the staff to install the pumping pipeline 3 above the water surface, and then lower the pumping pipeline 3 through the reeling device 4 in cooperation with the chain 231, without the need for divers to dive to the seabed for operation, which is convenient and quick.

[0033] In order to solve the problem of how to facilitate the rapid upward movement of the grouting barrel 2 under the pressure of the seabed, the following features are specifically set:

[0034] A movable bottom plate 24 is coaxially arranged in the grouting chamber 21 of the movable grouting barrel 2, and the circumferential side of the movable bottom plate 24 is in contact with the inner wall of the grouting chamber 21. The movable bottom plate 24 divides the lower part of the grouting chamber 21 into an air intake chamber 25, and the air intake chamber 25 is connected to the air pipe and the air source through the air supply pipe 251; a discharge port 241 is provided on the movable bottom plate 24, and the axial position of the spraying pipe 22 is the same, and a discharge pipe 242 is provided below the discharge port 241, and the discharge pipe 242 is inserted into the spraying pipe 22.

[0035] The movable bottom plate 24 is arranged on the grouting chamber 21 of the movable grouting tube 2 in this embodiment. The movable bottom plate 24 separates the lower part of the grouting chamber 21 into a sealed air intake chamber 25. The air intake chamber 25 is connected to the air source through the air supply pipe 251. When the movable grouting tube 2 is located on the water surface, the solidified soil pumping device can pump a certain amount of solidified soil into the grouting chamber 21 of the movable grouting tube 2. The solidified soil enters the grouting chamber 21 and exerts pressure on the movable bottom plate 24, causing the movable bottom plate 24 to move downward. The downward movement of the movable bottom plate 24 can increase the volume of the grouting chamber 21 and discharge the air in the air intake chamber 25. The weight of the movable grouting tube 2 is increased, making it easier to move down along the steel pipe column 1 into the seabed. When the grouting is completed, the air source on the transport ship transports gas to the air intake chamber 25 through the air supply pipe 251. After the gas is input into the air intake chamber 25, the movable bottom plate 24 will be lifted, so that more gas can enter. The length of the discharge pipe 242 and the spraying pipe 22 should ensure that the discharge pipe 242 will not separate from the spraying pipe 22 when the movable bottom plate 24 moves upward.

[0036] In order to solve the problem of how to ensure that the solidified soil in the grouting cavity 21 can be discharged through the spraying pipe 22, the following features are specifically set:

[0037] The discharge opening 241 is in a tapered shape with its opening gradually increasing upwards.

[0038] In this embodiment, the movable bottom plate 24 has a certain thickness. The discharge port 241 on the movable bottom plate 24 is conical and the opening gradually increases upward, thereby ensuring that the solidified soil entering the grouting cavity 21 enters the discharge port 241 under pressure and enters the discharge pipe 242 opening at the lower axis along the inner wall of the discharge port 241. The conical shape of the discharge port 241 ensures that the solidified soil can be discharged smoothly, reducing the dead corners in the grouting cavity 21.

[0039] In order to ensure that the gas can smoothly enter the air inlet cavity 25, the following features are specifically set:

[0040] The bottom opening of the air supply pipe 251 is located at the bottom of the grouting chamber 21, and the bottom opening of the air supply pipe 251 is set vertically upward; the top of the air supply pipe 251 extends to the top of the mobile grouting cylinder 2, and the air supply pipe 251 is fixedly installed on the top of the air inlet chamber 25.

[0041] The bottom opening of the air supply pipe 251 in this embodiment is set at the bottom end of the air inlet chamber 25 and remains open upward. The air supply pipe 251 can be a cavity opened in the grouting tube 2 or an air pipe installed in the mobile grouting tube 2. The bottom opening of the air supply pipe 251 remains upward. When a certain mass of solidified soil is filled in the grouting chamber 21, the movable bottom plate 24 moves down due to the weight of the solidified soil and fits the bottom opening of the air supply pipe 251. When the air source transports gas into the air supply pipe 251, the gas in the air supply pipe 251 pushes up the movable bottom plate 24 under the action of pressure and enters the air inlet chamber 25. The air supply pipe 251 or the pipe that transports gas to the air supply pipe 251 can be directly connected to the pumping pipeline 3 by a cable tie.

[0042] In order to solve the problem of how to accelerate the speed of the grouting barrel 2 moving toward the seabed mud surface, the following features are specifically set:

[0043] The movable grouting tube 2 is provided with a surrounding variable weight chamber 26 on the peripheral side of the grouting chamber 21, and a plurality of water outlets 261 are provided on the top of the variable weight chamber 26. The water outlets 261 are distributed at equal intervals around the axis of the movable grouting tube 2; a piston ring 243 is coaxially provided in the variable weight chamber 26, and the peripheral side of the piston ring 243 is in contact with the inner wall of the variable weight chamber 26. The piston ring 243 moves along the axis of the movable grouting tube 2 to change the water content in the variable weight chamber 26.

[0044] When the movable grouting tube 2 needs to move up, the piston ring 243 can move up in the variable weight chamber 26, and discharge the seawater in the variable weight chamber 26 to the outside through the water outlet 261, thereby reducing the mass of the movable grouting tube 2, accelerating the speed of the movable grouting tube 2 moving up along the steel pipe column 1, and reducing the pressure on the working end of the reeling device 4.

[0045] In order to achieve the purpose of the piston ring 243 controlling the synchronous linkage of water inlet and drain in the variable weight chamber 26 and air inlet and exhaust in the air inlet chamber 25, the following features are specifically set:

[0046] A number of connecting rods 244 are provided around the movable bottom plate 24, and the connecting rods 244 are fixedly connected to the bottom end of the piston ring 243, and the piston ring 243 and the movable bottom plate 24 move synchronously; the connection between the air intake chamber 25 and the variable weight chamber 26 is provided with waist-shaped holes 262 with the same number as the connecting rods 244, and the waist-shaped holes 262 extend along the moving path of the connecting rods 244, and the connecting rods 244 are located in the waist-shaped holes 262 for limited movement, and the movable bottom plate 24 blocks the waist-shaped holes 262.

[0047] In this embodiment, the piston ring 243 in the variable weight chamber 26 and the movable bottom plate 24 in the grouting chamber 21 are fixedly connected by a plurality of connecting rods 244. The connecting rods 244 are connected to the bottom of the piston ring 243. When the mobile grouting tube 2 moves downward, solidified soil can be pumped into the grouting chamber 21 to drive the movable bottom plate 24 to move downward. The downward movement of the movable bottom plate 24 drives the piston ring 243 to move downward synchronously in the variable weight chamber 26, and the seawater is sucked into the variable weight chamber 26. The weight of the seawater and the solidified soil ensures that the mobile grouting tube 2 moves down quickly to the seabed mud surface in the target area to start the grouting work. During the downward movement of the piston ring 243, the connecting rod 244 connecting the piston ring 243 and the movable bottom plate 24 is in the variable weight chamber 26. The movable bottom plate 24 moves in the discharge pipe 242 on one side of the bottom, and the movable bottom plate 24 moves downward to block the waist-shaped hole 262 to prevent solidified soil from entering the air inlet chamber 25 and the variable weight chamber 26; when the movable grouting tube 2 completes its work, the gas source sends high-pressure gas into the air inlet chamber 25 through the air delivery pipe 251, and the gas can enter the variable weight chamber 26 through the waist-shaped hole 262, and push the movable bottom plate 24 and the piston ring 243 upward synchronously under the movable bottom plate 24 and the piston ring 243, thereby expanding the capacity of the gas in the air inlet chamber 25 while discharging the water in the variable weight chamber 26 from the water outlet 261, reducing the weight of the movable grouting tube 2, and facilitating the reeling device 4 to pull the movable grouting tube 2 upward through the chain 231.

[0048] In order to prevent excessive air pressure from damaging the internal structure of the mobile grouting tube 2, the following features are specifically set:

[0049] The inner wall of the grouting chamber 21 is provided with a surrounding first limit block 212 . When the upper side of the movable bottom plate 24 is in contact with the bottom of the first limit block 212 , the piston ring 243 is in contact with the upper end of the variable weight chamber 26 to discharge all the water in the variable weight chamber 26 .

[0050] The inner wall of the grouting chamber 21 in this embodiment is provided with a first limit block 212. When gas enters the air inlet chamber 25, the movable bottom plate 24 gradually moves upward. When the movable bottom plate 24 moves to the top and fits the bottom of the first limit block 212, the movable bottom plate 24 stops moving. At this time, the discharge pipe 242 of the movable bottom plate 24 has not separated from the spraying pipe 22, and the piston ring 243 also fits the upper end of the variable weight chamber 26 to discharge all the seawater in the variable weight chamber 26, thereby reducing the weight of the movable grouting tube 2. The presence of the first limit block 212 reduces the pressure on the connecting rod 244, thereby preventing the air pressure in the air inlet chamber 25 from being too high, causing the piston ring 243 to be unable to move, and then the movable bottom plate 24 continues to move upward, causing the connecting rod 244 to bend or break.

[0051] In order to solve the problem of how to quickly move the mobile grouting barrel 2 along the steel pipe column 1, the following features are specifically set:

[0052] A plurality of balls 27 are installed on the inner wall of the movable grouting tube 2 . The balls 27 are evenly spaced around the axis of the movable grouting tube 2 , and the balls 27 fit the outer wall of the steel pipe column 1 .

[0053] In this embodiment, a number of movable balls 27 are embedded in the inner wall of the mobile grouting tube 2. The balls 27 are evenly spaced around the axis of the mobile grouting tube 2 and fit into the outer wall of the steel pipe column 1, ensuring that the axis of the mobile grouting tube 2 and the axis of the steel pipe column 1 are in the same straight line. The balls 27 can also be rollers. The balls 27 convert the sliding friction between the mobile grouting tube 2 and the steel pipe column 1 into rolling friction, thereby making the movement of the mobile grouting tube 2 along the steel pipe column 1 smoother.

[0054] In order to solve the problem of how to prevent the mobile grouting barrel 2 from rotating when moving along the steel pipe column 1, causing the pumping pipeline 3 to be entangled with the steel pipe column 1, the following features are specifically set:

[0055] The steel pipe column 1 is provided with a plurality of limiting grooves 11 , which extend along the axis of the steel pipe column 1 and are evenly spaced around the axis of the steel pipe column 1 . The balls 27 are limited and move in the limiting grooves 11 .

[0056] In this embodiment, when the mobile grouting tube 2 moves along the steel pipe column 1, the ball 27 on the inner wall of the mobile grouting tube 2 moves in a limited position in the limiting groove 11 on the surface of the steel pipe column 1. The limiting groove 11 ensures that the mobile grouting tube 2 does not rotate when moving in the vertical direction, thereby preventing the pumping pipeline 3 from being entangled with the steel pipe column 1 due to the fluctuation of sea water during the process of the mobile grouting tube 2 driving the pumping pipeline 3 to move downward, affecting the subsequent upward movement of the mobile grouting tube 2.

[0057] When the grouting line 22 is lowered to the bottom of the tank, the grouting line 22 is opened, and the grouting line 22 is opened, and the grouting line 22 is opened.

[0058] The above embodiments merely represent one or several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An anti-scour solidification soil pouring device, the pouring device is installed on a steel pipe column extending vertically to the seabed mud surface, characterized in that: The grouting device includes a movable grouting cylinder coaxially mounted on the steel pipe column, the movable grouting cylinder is annular, and a grouting cavity is provided inside the movable grouting cylinder; A grouting connection port communicating with the grouting cavity is provided on the upper side of the mobile grouting cylinder. The grouting connection port is connected to one end of a pumping pipeline, and the pumping pipeline is connected to the output end of the solidified soil pumping device. Several spray pipes connected to the grouting chamber are provided below the mobile grouting cylinder. The spray pipes are distributed at equal angles around the axis of the mobile grouting cylinder. Control valves are provided on the spray pipes. A connecting ring is provided on the outer wall of the mobile grouting cylinder, the connecting ring is connected to one end of the chain, and the other end of the chain is connected to the working end of the reeling device, which is installed on the top of the steel pipe column; The reeling device drives the mobile grouting barrel to move down along the axis of the steel pipe column to the seabed mud surface. The solidified soil enters the grouting cavity through the pumping pipeline and naturally settles to the target pumping area around the bottom of the steel pipe column through the spraying pipe. A movable bottom plate is coaxially arranged in the grouting chamber of the movable grouting cylinder, and the circumferential side of the movable bottom plate is in contact with the inner wall of the grouting chamber. The movable bottom plate divides the lower part of the grouting chamber into an air inlet chamber, and an air supply pipe is arranged on one side of the air inlet chamber. The air inlet chamber is connected to the air pipe and the air source through the air supply pipe. The movable bottom plate is provided with a discharge port at the same position as the axis of the spraying pipe, and a discharge pipe is provided below the discharge port, and the discharge pipe is inserted into the spraying pipe; The movable grouting tube is provided with a surrounding variable weight cavity on the circumference of the grouting cavity, and a plurality of water outlets are provided on the top of the variable weight cavity. The water outlets are distributed at equal intervals around the axis of the movable grouting tube; A piston ring is coaxially arranged in the variable weight cavity, and the circumference of the piston ring is in contact with the inner wall of the variable weight cavity. The piston ring moves along the axis of the movable grouting tube to change the water content in the variable weight cavity; Several connecting rods are provided around the movable bottom plate, which are fixedly connected to the bottom end of the piston ring, and the piston ring and the movable bottom plate move synchronously; The connection between the air intake cavity and the variable weight cavity is provided with waist-shaped holes with the same number as the connecting rods. The waist-shaped holes extend along the moving path of the connecting rods. The connecting rods are located in the waist-shaped holes and move in a limited manner. The movable bottom plate blocks the waist-shaped holes.

2. The anti-scour solidification soil pouring device according to claim 1, characterized in that: The discharge opening is a cone with an opening gradually increasing upwards.

3. The anti-scour solidified soil pouring device according to claim 1, characterized in that: The bottom opening of the air supply pipe is located at the bottom of the grouting cavity, and the bottom opening of the air supply pipe is arranged vertically upward; The top of the air supply pipe extends to the top of the movable grouting barrel, and the air supply pipe is fixedly installed on the top of the air inlet cavity.

4. The anti-scour solidified soil pouring device according to claim 1, characterized in that: The inner wall of the grouting cavity is provided with a surrounding first limit block. When the upper side of the movable bottom plate is in contact with the bottom of the first limit block, the piston ring is in contact with the upper end of the variable weight cavity to discharge all the water in the variable weight cavity.

5. The anti-scour solidified soil pouring device according to claim 1, characterized in that: A number of balls are installed on the inner wall of the mobile grouting tube. The balls are evenly distributed around the axis of the mobile grouting tube and fit the outer wall of the steel pipe column.

6. The anti-scour solidified soil pouring device according to claim 5, characterized in that: The steel pipe column is provided with a plurality of limit grooves, which extend along the axis of the steel pipe column and are evenly spaced around the axis of the steel pipe column. The balls move within the limit grooves.

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