An underwater anchoring foundation construction apparatus and method

Abstract

The application provides a construction equipment and method of underwater anchoring foundation, which comprises a penetrating power head, a shell connected with the penetrating power head, an isolation film connected with the shell, a pressure-resistant hose connected with the penetrating power head through the shell, a water injection part connected with the pressure-resistant hose, a grouting part connected with the pressure-resistant hose, and an anchor cable wrapped outside the pressure-resistant hose. The water injection part, the jet sand conveying channel and the jet sand flushing nozzle cooperate to form a jet flow. The jet flow and the high-frequency vibration of the vibration motor work together to fluidize the seabed sand around the penetrating power head, so that the whole equipment penetrates into the seabed by gravity. The grouting part injects the slurry with consolidation effect to consolidate the sand around the penetrating power head, the shell, the anchor cable and the isolation film together to form the underwater anchoring foundation. The application realizes the controllable penetrating posture and depth in the seabed and forms a vertical anchoring foundation.

Description

Technical Field

[0001] This invention relates to the field of anchorage technology in the field of water conservancy and marine engineering, specifically to a construction equipment and method for underwater anchoring foundations. Background Technology

[0002] Anchoring systems are crucial for the safety and stability of moored objects. Besides ships, floating platforms, buoys, underwater monitoring systems, deep-sea aquaculture cages, suspended tunnels, and pipelines all require stable positioning in the ocean, necessitating the construction of underwater anchoring foundations for mooring. The reliability of these anchoring systems is key to ensuring their normal and safe operation in their designated positions. The holding power of traditional anchors is primarily determined by their structure and weight. Traditional anchors, such as high-holding-power anchors, rely on the weight of the anchor chain and the anchor itself to provide restoring force, limiting the movement of the moored object. However, in strong winds or high waves, insufficient anchor chain length or anchor weight can lead to insufficient anchoring force, resulting in anchor dragging and endangering the normal operation of the moored object and the safety of its surrounding environment. With the continuous development of marine resources, there is a need to develop new underwater anchoring technologies and equipment to meet the demands of modern marine engineering.

[0003] A review of existing information reveals relatively little research on underwater anchoring technology and equipment. Chinese patent application number 201210550429.9, entitled "A Gravity Anchor and its Manufacturing Method," includes an anchor body, an upper lifting ring, and a lateral stabilizing device. The upper lifting ring is fixed to the top of the anchor body, and the lateral stabilizing device is fixed to the bottom. Its key feature is that the lower part of the gravity anchor adopts an inverted conical structure, allowing it to easily penetrate the mud at the bottom, thus providing a large holding force in the vertical direction. The lateral stabilizing device fixed to the anchor body prevents significant lateral displacement. Both the upper and side lifting rings are embedded in the anchor body, ensuring a secure connection and increasing the anchor's service life. Its main drawbacks are the limited self-weight power of the gravity anchor, the inability to completely bury the anchor in the soil, and the insufficient vertical holding force provided solely by the lower inverted conical structure.

[0004] Chinese patent application number 201210153612.5, publication number 102673737A, entitled "A Consolidated Anchor with a High Gravity-to-Grip Ratio and its Installation Method," provides a consolidated anchor with a high gravity-to-grip ratio. The anchor is characterized by primarily consisting of a shell, a container inside the shell, a nozzle, an anchor ring, an expansion material, and a solidifying material. A movable partition divides the container cavity into upper and lower storage chambers, which respectively contain the expansion material and the solidifying material capable of consolidating with the soil. A nozzle connected to the container is located on the outer wall of the anchor body. However, since the anchor's specific gravity can only approach 7.8 tons per cubic meter, its kinetic energy during penetration is still limited by its gravity. To achieve sufficient penetration depth, adequate water depth is required during anchoring operations, making it unsuitable for near-shore or shallow water conditions.

[0005] Chinese Patent Application No. CN202211416367, Patent Title: A Method for Underwater Anchor Bolt Construction in Sandy Soils. The specific steps of the construction method are as follows: (1) Install a water-stop curtain around the foundation pit; (2) Drill holes in the water-stop curtain; (3) Drill holes in the sandy soil using a casing follow-up process, while simultaneously injecting wall-protecting mud into the holes until the designed hole depth is reached; (4) After drilling, inject primary sand-washing mud into the holes for sand washing. After sand washing is completed, continue injecting primary sand-washing mud while gradually pulling out the inner casing of the drilling rig; (5) Insert the anchor bolt into the outer casing while simultaneously lowering the grouting pipe, injecting grouting fluid from the bottom of the anchor bolt, and then pulling out the outer casing section by section after completion. This invention patent solves the problem of water and sand inrush during anchor bolt support in sandy soils by drilling holes at the water-stop curtain, thereby enabling anchor bolt support to be used in sandy soils. Its main drawback is that it requires the installation of casing for underwater drilling operations, resulting in high construction costs and a long construction period. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide construction equipment for underwater anchoring foundations, comprising:

[0007] The power head is inserted, and its interior is equipped with a vibrating motor, a jet sand conveying channel, and a jet sand flushing nozzle;

[0008] The outer casing, which is connected to the penetration power head;

[0009] An isolation membrane is connected to the outer casing;

[0010] A pressure-resistant hose that penetrates the housing and is connected to the penetration power head;

[0011] The water injection component is connected to the pressure-resistant hose;

[0012] Grouting component, which is connected to the pressure-resistant hose;

[0013] An anchor cable, which is wrapped around the pressure-resistant hose;

[0014] The water injection component, together with the jet sand conveying channel and the jet sand flushing nozzle, forms a jet. The jet, in conjunction with the high-frequency vibration of the vibrating motor, fluidizes the seabed sediment around the penetration power head, allowing the entire equipment to penetrate the seabed by its own weight.

[0015] The grouting component injects grout with a consolidating effect to solidify the mud and sand near the penetrating power head, outer shell, anchor cable, and isolation membrane together to form an underwater anchoring foundation.

[0016] Preferably, the penetration head is conical and divided into a gravity chamber and an empty chamber from bottom to top, and the vibration motor is located inside the gravity chamber; the jet sand conveying channel connects the empty chamber to the interior of the outer shell; the jet sand flushing nozzle penetrates the gravity chamber and connects the empty chamber to the outside.

[0017] Preferably, the inner wall of the housing is further provided with a tilt sensor, which is perpendicular to the inner wall of the housing and is used to sense whether the housing is tilted;

[0018] A counterweight is fixed to the inner wall of the gravity chamber by a spring. Electromagnetic coils are arranged around the counterweight to increase the gravity of the penetration head and adjust the penetration direction of the penetration head.

[0019] When the tilt sensor detects that the outer shell is tilted, the gravity chamber adjusts the position of the counterweight block through the electromagnetic field of the electromagnetic coil, thereby changing the center of gravity of the gravity chamber and changing the penetration direction.

[0020] Preferably, the jet sand conveying channel is a channel connected to the empty chamber, and there are multiple channels, which are evenly distributed around the top of the empty chamber to spray fluid at high speed.

[0021] The jet nozzle is a channel connected to the empty chamber, used to spray fluid downwards at high speed.

[0022] Preferably, the outer shell is a cavity that forms a flow channel and provides support for the installation of the penetration power head.

[0023] Preferably, the separator is a columnar film used to block fluid erosion and form a transport channel.

[0024] Preferably, the water injection component and the grouting component are connected to the pressure-resistant hose via a tee; wherein:

[0025] The water injection component includes:

[0026] A water injection valve is installed on the tee;

[0027] A high-pressure water pump is connected to the tee.

[0028] The water inlet pipe is connected at one end to the high-pressure water pump and at the other end to an external water source;

[0029] The grouting component includes:

[0030] The grouting valve is installed on the tee;

[0031] The grouting pump is connected to the tee via a pipeline;

[0032] The grout mixer is connected to the grouting pump via a pipeline to mix the underwater consolidation masterbatch and the underwater consolidation auxiliary agent.

[0033] Preferably, the tee is connected to the pressure-resistant hose via a plug.

[0034] According to a second aspect of the present invention, a method for constructing an underwater anchoring foundation is provided, employing the underwater anchoring foundation construction equipment described in any one of the claims, characterized in that it comprises:

[0035] Start the water injection components and vibration motor, and the power head vibrates at high frequency, and the water is sprayed out at high speed from the jet sand nozzle;

[0036] The mud and sand entering the lower part of the power head are transformed into slurry under the combined action of high-frequency oscillating shear fluidization of the power head and high-speed jet flushing at the outlet of the jet flushing nozzle. Due to its own weight, the power head displaces the slurry below it and continues to penetrate downwards.

[0037] The outlet of the jet sand conveying channel forms a low-pressure zone. The mud that is squeezed to both sides below the power head accelerates upward under the pressure difference and mixes with the jet at the outlet of the jet sand conveying channel to form a fluid with a lower density than the mud. This fluid flows upward in the isolation membrane until it reaches the bottom surface.

[0038] Once the penetration depth reaches the specified depth, the water injection component is closed and the grouting component is opened.

[0039] The consolidation slurry is injected into the bottom of the penetration head, and the consolidation slurry continuously pushes the mud upwards, gradually wrapping the anchor cable and isolation membrane inside the penetration head, shell, and bed.

[0040] Stop grouting and close the grouting components once the solidified grout reaches the designated elevation.

[0041] After a set time, the penetrating power head, outer shell, anchor cable, and isolation membrane are solidified together with the surrounding mud and sand to form an underwater anchoring foundation.

[0042] Preferably, when the tilt sensor detects that the outer shell is tilted due to deviation from verticality, the center of gravity of the gravity chamber is adjusted to keep the outer shell in a vertical insertion posture.

[0043] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0044] The underwater anchoring foundation construction equipment and method in this embodiment of the invention can consolidate the anchor cable and isolation membrane inserted into the power head, outer shell, and bottom bed with the surrounding mud and sand to form an underwater anchoring foundation with strong pull-out resistance.

[0045] The underwater anchoring foundation construction equipment and method in this embodiment of the invention achieves controllable penetration attitude and penetration depth within the substrate, and can form a vertical anchoring foundation.

[0046] The underwater anchoring foundation construction equipment and method in this embodiment of the invention do not require large and complex installation equipment, nor do they require large floating cranes or ship facilities. The construction period is short, the risk is low, and the cost is low.

[0047] The underwater anchoring foundation construction equipment and method in this embodiment of the invention are suitable for both shallow and deep water, and are simple to implement and operate. They can provide a safe, reliable, simple to implement and maintain, and low-cost anchoring measure for the development and utilization of marine resources. Attached Figure Description

[0048] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0049] Figure 1 This is a schematic diagram of the construction method and equipment for underwater anchoring foundations in an embodiment of the present invention;

[0050] In the diagram: 1-Penetration power head, 2-Gravity chamber, 3-Empty chamber, 4-Jet sand conveying channel, 5-Jet sand flushing nozzle, 6-Pressure-resistant hose, 7-Anchor cable, 8-Vibration motor, 9-Plug-in head, 10-Outer shell, 11-Support, 12-Tee, 131-Water injection valve, 132-Grouting valve, 14-High-pressure water pump, 15-Water inlet pipe, 16-Grouting pump, 17-Pipeline, 18-Mixer, 19-Underwater consolidation masterbatch, 20-Underwater consolidation auxiliary agent, 21-Cable, 22-Isolation membrane, 23-Tilt sensor. Detailed Implementation

[0051] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention. Parts not described in detail in the following embodiments can be implemented using existing technology.

[0052] See Figure 1 This invention provides an embodiment of underwater anchoring foundation construction equipment, including a penetration power head 1, a shell 10, a separation membrane 22, a pressure-resistant hose 6, a water injection component, a grouting component, and an anchor cable 7. The penetration power head 1 is equipped with a vibration motor 8, which has a jet sand conveying channel 4 and a jet sand flushing nozzle 5; the shell 10 is connected to the penetration power head 1; the separation membrane 22 is connected to the shell 10; the pressure-resistant hose 6 penetrates the shell 10 and is connected to the penetration power head 1; the water injection component is connected to the pressure-resistant hose 6; the grouting component is connected to the pressure-resistant hose 6; and the anchor cable 7 is wrapped around the pressure-resistant hose 6.

[0053] The aforementioned water injection components, together with the jet sand conveying channel 4 and the jet sand flushing nozzle 5, form a jet. This jet, in conjunction with the high-frequency vibration of the vibrating motor 8, can fluidize the seabed sediment around the power head 1, allowing the entire equipment to penetrate the seabed by its own weight. The grouting components inject a grout with a consolidating effect (such as a grout formed by mixing underwater consolidation masterbatch and underwater consolidation auxiliary agent) to consolidate the sediment near the power head 1, the outer shell 10, the anchor cable 7, and the isolation membrane 22 together to form an underwater anchoring foundation.

[0054] In a preferred embodiment of the present invention, the penetration head 1 is a cone-shaped body, which serves to fluidize the surrounding soil, and the tip of the cone-shaped body serves as the penetration point for the entire device. Specifically, the penetration head 1 can be made of steel, with a diameter of 30cm and a height of 60cm.

[0055] Furthermore, the interior of the penetrating power head 1 is equipped with a gravity chamber 2, an empty chamber 3, a jet sand-flushing nozzle 5 that penetrates the gravity chamber 2, and a jet sand-carrying channel 4 that penetrates the empty chamber 3.

[0056] In one specific embodiment, the gravity chamber 2 can be made of lead-zinc alloy material, and its function is to increase the gravity of the penetrating power head. A counterweight block is fixed to its inner wall by springs, and electromagnetic coils are arranged around the counterweight block to increase the gravity of the penetrating power head and adjust its penetration direction. The empty chamber 3 is a cavity formed inside the penetrating power head 1 and connected to the pressure-resistant hose 6, and its function is to transport fluid. The jet sand conveying channel 4 can be made of steel and is a channel connected to the cavity. For example, the diameter of the jet sand conveying channel 4 can be selected as φ20mm, with 8 channels evenly distributed around the top of the empty chamber 3, and its function is to eject the fluid at high speed from it. The jet sand flushing nozzle 5 can also be made of steel and connected to the cavity. The diameter of the jet sand flushing nozzle 5 can be selected as φ20mm, and its function is to eject the fluid downwards (underwater) at high speed from it. Of course, in other embodiments, other materials can be used, and other parameters can be selected, depending on the actual engineering situation.

[0057] In a preferred embodiment of this invention, the tilt sensor 23 is vertically disposed on the inner wall of the housing 10 to sense the angle of the housing 10. It is typically a dual-axis tilt sensor, capable of simultaneously measuring the levelness in both horizontal and vertical directions. When the tilt sensor 23 detects a tilt in the housing 10, the gravity chamber 2 can attract a counterweight using the magnetic force of its internal electromagnetic coil. Adjusting the position of the counterweight within the gravity chamber 2 changes the center of gravity of the gravity chamber 2, thereby changing the penetration direction and maintaining a vertical penetration posture.

[0058] In a preferred embodiment of the present invention, the pressure-resistant hose 6 can be a flexible pipe made of high-pressure steel wire braided tubing, capable of withstanding 25 atmospheres of pressure, with a diameter of φ80mm and a length of 200m, and its function is to transport fluid. The anchor cable 7 can be made of ultra-high molecular weight polyethylene fiber material, with an outer diameter of φ120mm and a length of 200m, and its function is to provide a mooring line. Of course, in other embodiments, other materials can be used and other parameters can be selected.

[0059] In a preferred embodiment of the present invention, the vibration motor 8 is made of an eccentric block and an electric motor with a power of 1500W, and its function is to provide high-frequency vibration at a frequency of 80Hz. Of course, in other embodiments, other decoupled vibration motors 8 can also be used, and other operating parameters can be selected according to engineering requirements.

[0060] In a preferred embodiment of the present invention, the outer shell 10 can be a cylindrical structure made of steel, extending vertically, serving to form a flow channel and provide support for the installation of the penetration head 1. The isolation membrane 22 can be a columnar thin film made of PU material, 0.2 mm thick, with uniformly distributed small holes of φ2 mm and a porosity of 0.3, serving to block fluid erosion and form a conveying channel. The outer shell 10 and the isolation membrane 22 are interconnected, with the isolation membrane 22 being a flexible outer shell extending from the end of the outer shell 10. The outer shell 10 is rigid and is used to penetrate the soil together with the penetration head 1 to form a channel. The isolation membrane 22 is a flexible outer shell surrounding the inner wall of the formed channel. During the water injection and penetration stage, the isolation membrane 22 confines the mud flowing back into the channel formed by the penetration power head 1 within a certain range, preventing it from eroding and collapsing the penetration channel. During the grouting and consolidation stage, the isolation membrane 22 confines the consolidation grout in the channel above the penetration power head 1, consolidating the penetration power head 1, outer shell 10, anchor cable 7, and isolation membrane 22 together to form a large-sized underwater foundation. The isolation membrane 22 has small pores with a certain porosity, which allows a small amount of consolidation grout to diffuse through the isolation membrane 22 into the surrounding soil, filling the gaps between the isolation membrane 22 and the soil, consolidating the isolation membrane 22 with the nearby silt, and enhancing the pull-out resistance of the foundation. Of course, in other embodiments, other materials can be used and other parameters can be selected, and the choice is not limited to the above-described embodiments.

[0061] In a preferred embodiment of the present invention, the penetration head 1 is fixedly connected to the outer shell 10 via a support 11. The support 11 can be a fixing plate made of steel, and the setting of the support 11 does not affect the entry of mud or solidified slurry on both sides of the penetration head 1 into the flow channel formed by the outer shell 10.

[0062] In a preferred embodiment of the present invention, the water injection component and the grouting component are connected to the pressure-resistant hose 6 via a tee 12. The tee 12 can be made of steel with a diameter of φ80mm, and its function is to provide a channel for fluid movement. Of course, in other embodiments, other materials can be used, and other parameters can be selected; the choice is not limited to the above.

[0063] Furthermore, a plug-in head 9 made of steel is used to connect the tee to the pressure-resistant hose 6, which facilitates pipe connection and disconnection.

[0064] In a preferred embodiment of the present invention, the water injection component includes a water injection valve 131, a high-pressure water pump 14, and a water inlet pipe 15. The water injection valve 131 is made of 316 stainless steel, φ80mm, and its function is to regulate the flow rate. The high-pressure water pump 14 is a centrifugal water pump with a head of 150m, φ80mm, and its function is to drive the fluid to move at high speed. The water inlet pipe 15 is a pipe made of PU material, φ120mm, and its function is to introduce water into the high-pressure water pump. The function of the water injection component is to enhance the cutting of the substrate sediment by the high-speed jet and carry the cut sediment back to the substrate surface, ensuring the stable penetration of the anchor body. The grouting component includes a grouting valve 132, a grouting pump 16, a pipe 17, and a grout mixer 18; the grouting valve 132 here is the same as the water injection valve 131. The grouting pump 16 is a slurry pump with a head of 200m, φ80mm, and its function is to drive the slurry movement under high pressure. Pipe 17 is a channel made of 316 stainless steel, φ80mm in diameter, and its function is to transport fluid. Mixer 18 is a 1000L component made of 316 stainless steel, and its function is to thoroughly mix the underwater solidification masterbatch and underwater solidification aid into a slurry. Of course, this is only one embodiment of the invention; in other embodiments, other materials and parameters may be used, and the invention is not limited to the above-described embodiment.

[0065] Among them, the underwater consolidation masterbatch 19 is a self-leveling, self-compacting, waterproof, and anti-dispersion underwater cement, which encapsulates and solidifies mud, sand, and structures together. The underwater consolidation auxiliary agent 20 is water, which promotes the grouting performance of the underwater consolidation masterbatch 19.

[0066] In other embodiments of the invention, a wired cable 21 is used to power the vibration motor 8. The wired cable 21 is a cable made of copper conductive material completely wrapped with insulating plastic material.

[0067] In this embodiment, the tilt sensor 23 senses the attitude of the outer shell 10, enabling controllable penetration attitude within the substrate and ensuring it remains vertical. The wired cable 21 measures the depth of the penetration head 1 into the water and controls the opening and closing of the vibration motor 8 in the penetration head 1, thus enabling controllable anchor penetration depth and forming a vertical anchoring foundation.

[0068] The above embodiments do not require large and complex installation equipment, nor do they require the use of large floating cranes or ship facilities. The construction period is short, the risk is low, and the cost is low.

[0069] Based on the same inventive concept, in other embodiments of the present invention, a method for constructing an underwater anchoring foundation is provided, which is implemented using the aforementioned underwater anchoring foundation construction equipment, and the process includes:

[0070] S1, start the water injection component and vibration motor 8, the power head 1 vibrates at high frequency, and the water is sprayed out at high speed from the jet sand nozzle;

[0071] S2, the mud and sand entering the lower part of the power head 1 are formed into mud under the combined action of high-frequency oscillation shear fluidization of the power head 1 and high-speed jet flushing at the outlet of the jet flushing nozzle 5. Due to its own weight, the power head 1 displaces the mud below it and continues to penetrate downwards.

[0072] S3, according to Bernoulli's equation, the outlet of the jet sand conveying channel 4 forms a low-pressure zone due to its high flow velocity. The mud that is squeezed to both sides below the power head 1 accelerates upward under the action of pressure difference and mixes with the jet at the outlet of the jet sand conveying channel 4 to form a fluid with lower density. It flows upward in the isolation membrane 22 until it reaches the bottom surface.

[0073] S4. When the penetration depth reaches the specified depth of 25m, the water injection component is turned off and the grouting component is started. The grouting component continuously injects the solidified grout into the bottom of the penetration power head 1.

[0074] S5, since the specific gravity of the injected slurry is higher than that of the fluidized mud, the continuously injected slurry will continuously push the mud upward and gradually wrap the anchor cable 7 and the isolation membrane 22 that penetrate into the power head 1, the outer shell 10, and the bed.

[0075] S6, after the solidified grout reaches the specified elevation, stop grouting, shut down mixer 18, and close the grouting components.

[0076] S7, over time, the anchor cable 7 and the isolation membrane 22 that penetrate into the power head 1, the outer shell 10, and the bottom bed are solidified together with the surrounding mud and sand to form a strong underwater anchoring foundation.

[0077] In a preferred embodiment of the present invention, the start-up process of the grouting component is as follows:

[0078] Open the grouting valve 132 and start the mixer 18. In the mixer 18, inject the underwater solidification masterbatch 19 and the underwater solidification auxiliary agent 20 in proportion, and the mixer 18 mixes them into a solidified slurry.

[0079] In a preferred embodiment of the present invention, when the tilt sensor 23 detects that the outer shell 10 deviates from vertical and tilts, the center of gravity of the gravity chamber is adjusted so that the outer shell 10 maintains a vertical insertion posture.

[0080] Existing anchors rely solely on their shape resistance to provide pull-out resistance. Under the same anchor weight and size, the anchoring capacity of this invention is far greater than that of ordinary vertical anchors. In the above embodiment, the water injection component, outer shell 10, and isolation membrane 22, under the action of the consolidation grout, within the enclosure of the isolation membrane 22, consolidate the penetrating power head 1, outer shell 10, anchor cable 7, and the surrounding soil together. This allows the construction of an underwater anchoring foundation with a pull-out resistance of approximately 600 tons at a water depth of 100m. Furthermore, this invention is simple to construct and inexpensive.

[0081] Therefore, this invention is suitable for both shallow and deep water, and can provide a safe, reliable, simple to implement and maintain, and low-cost anchoring measure for the development and utilization of marine resources.

[0082] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention. The above preferred features can be used in any combination without conflict.

Claims

1. A construction equipment for underwater anchoring foundations, characterized in that, include: The power head is inserted, and its interior is equipped with a vibrating motor, a jet sand conveying channel, and a jet sand flushing nozzle; The outer casing, which is connected to the penetration power head; An isolation membrane is connected to the outer casing; A pressure-resistant hose that penetrates the housing and is connected to the penetration power head; The water injection component is connected to the pressure-resistant hose; Grouting component, which is connected to the pressure-resistant hose; An anchor cable, which is wrapped around the pressure-resistant hose; The water injection component, together with the jet sand conveying channel and the jet sand flushing nozzle, forms a jet. The jet, in conjunction with the high-frequency vibration of the vibrating motor, fluidizes the seabed sediment around the penetration power head, allowing the entire equipment to penetrate the seabed by its own weight. The grouting component injects grout with a consolidating effect to consolidate the mud and sand near the penetrating power head, outer shell, anchor cable, and isolation membrane together to form an underwater anchoring foundation. The penetration head is conical and is divided into a gravity chamber and an empty chamber from bottom to top. The vibration motor is located inside the gravity chamber. The jet sand conveying channel connects the empty chamber to the inside of the outer shell. The jet sand-flushing nozzle penetrates the gravity chamber, connecting the empty chamber to the outside world; The jet sand conveying channel is a channel connected to the empty chamber. There are multiple channels, which are evenly distributed around the top of the empty chamber and are used to eject fluid at high speed. The jet nozzle is a channel connected to the empty chamber, used to spray fluid downwards at high speed.

2. The construction equipment for an underwater anchoring foundation according to claim 1, characterized in that, The inner wall of the housing is also provided with a tilt sensor, which is perpendicular to the inner wall of the housing and is used to sense whether the housing is tilted. A counterweight is fixed to the inner wall of the gravity chamber by a spring. Electromagnetic coils are arranged around the counterweight to increase the gravity of the penetration head and adjust the penetration direction of the penetration head. When the tilt sensor detects that the outer shell is tilted, the gravity chamber adjusts the position of the counterweight block through the electromagnetic field of the electromagnetic coil, thereby changing the center of gravity of the gravity chamber and changing the penetration direction.

3. The construction equipment for an underwater anchoring foundation according to claim 1, characterized in that, The outer shell is a cavity that forms a flow channel and provides support for the installation of the penetration power head.

4. The construction equipment for an underwater anchoring foundation according to claim 1, characterized in that, The isolation membrane is a columnar thin film used to block fluid erosion and form a transport channel.

5. The construction equipment for an underwater anchoring foundation according to claim 1, characterized in that, The water injection component and the grouting component are connected to the pressure-resistant hose via a tee; wherein: The water injection component includes: A water injection valve is installed on the tee; A high-pressure water pump is connected to the tee. The water inlet pipe is connected at one end to the high-pressure water pump and at the other end to an external water source; The grouting component includes: The grouting valve is installed on the tee; The grouting pump is connected to the tee via a pipeline; The grout mixer is connected to the grouting pump via a pipeline to mix the underwater consolidation masterbatch and the underwater consolidation auxiliary agent.

6. The construction equipment for an underwater anchoring foundation according to claim 5, characterized in that, The tee is connected to the pressure-resistant hose via a plug.

7. A method for constructing an underwater anchoring foundation, using the underwater anchoring foundation construction equipment described in any one of claims 1-6, characterized in that, include: Start the water injection components and vibration motor, and the power head vibrates at high frequency, and the water is sprayed out at high speed from the jet sand nozzle; The mud and sand entering the lower part of the power head are transformed into slurry under the combined action of high-frequency oscillating shear fluidization of the power head and high-speed jet flushing at the outlet of the jet flushing nozzle. Due to its own weight, the power head displaces the slurry below it and continues to penetrate downwards. The outlet of the jet sand conveying channel forms a low-pressure zone. The mud that is squeezed to both sides below the power head accelerates upward under the pressure difference and mixes with the jet at the outlet of the jet sand conveying channel to form a fluid with a lower density than the mud. This fluid flows upward in the isolation membrane until it reaches the bottom surface. Once the penetration depth reaches the specified depth, the water injection component is closed and the grouting component is opened. The consolidation slurry is injected into the bottom of the penetration head, and the consolidation slurry continuously pushes the mud upwards, gradually wrapping the anchor cable and isolation membrane inside the penetration head, shell, and bed. Stop grouting and close the grouting components once the solidified grout reaches the designated elevation. After a set time, the penetrating power head, outer shell, anchor cable, and isolation membrane are solidified together with the surrounding mud and sand to form an underwater anchoring foundation.

8. The construction method of an underwater anchoring foundation according to claim 7, characterized in that, When the tilt sensor detects that the outer shell is tilted and deviates from vertical, the center of gravity of the gravity chamber is adjusted to keep the outer shell in a vertical insertion posture.

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