An umbrella-shaped assembled recyclable grouting device and a grouting method thereof

Abstract

The present application relates to the technical field of grouting, in particular to a kind of umbrella-shaped assembled recyclable grouting equipment, including grouting blade, soil breaking cone, connecting steel ring, movable rod piece, pusher, grouting main rod, grouting pipe, umbrella-shaped grouting assembly module, grouting main rod buckle insertion tip.The soil breaking cone is connected with grouting main rod;The grouting main rod can be used according to length sequentially end-to-end lap joint, one end of the pusher is fixed on the grouting main rod, and the other end is connected with the connecting steel ring;The grouting blade is connected with the connecting steel ring, and the pusher will drive grouting blade to open when pushing.The present application can accurately reach specified position and grout in a large range in a short time, form reliable water-stopping barrier, can participate in rescue and disaster relief under certain conditions, save a lot of manpower and material resources.

Description

Technical Field

[0001] This invention relates to the field of grouting technology, and more particularly to an umbrella-shaped, assembled, recyclable grouting device and its grouting method. Background Technology

[0002] With urbanization, the conflict between population and land has become increasingly prominent. Therefore, to alleviate this conflict, the development of underground space has become increasingly intensive. Grouting technology, as a key reinforcement method in geotechnical engineering and underground engineering, focuses on injecting grout into stratum pores or structural cracks to achieve reinforcement, water plugging, and seepage prevention. However, traditional grouting equipment struggles to handle complex strata (such as high-pressure water-rich faults and karst areas), limiting grout diffusion and leading to uneven reinforcement or water plugging effects. Inadequate grouting pipe joint design can cause grout backflow or blockage, requiring frequent shutdowns for cleaning and reducing construction efficiency. Furthermore, traditional grouting equipment is often disposable or difficult to fully recycle, resulting in material waste and increased construction costs.

[0003] In summary, this application proposes an umbrella-shaped, assembled, recyclable grouting device and its grouting method, which improves the aforementioned technical problems. Summary of the Invention

[0004] In order to improve the slurry diffusion range, avoid slurry backflow or blockage, and realize the recyclability and reuse of the equipment, the present invention provides an umbrella-shaped assembled recyclable grouting device and its grouting method.

[0005] The technical implementation of this invention is as follows: an umbrella-shaped, assembled, recyclable grouting device, comprising at least one grouting main rod; and at least one umbrella-shaped grouting component module, wherein the umbrella-shaped grouting component module includes a plurality of grouting blades, connecting steel rings, a plurality of movable rods, and a plurality of pushers; the connecting steel rings are divided into two, with the upper connecting steel ring fixed to the outer surface of the grouting main rod; the plurality of pushers are all fixed to the grouting main rod and each is connected to the lower connecting steel ring via a push rod; the plurality of grouting blades are connected to the upper connecting steel ring; the plurality of movable rods are all connected to the lower connecting steel ring; the... Several movable rods are connected to corresponding grouting blades, and the number of movable rods and grouting blades is the same. When the pusher is working, it drives the push rod to extend and retract. The extension and retraction of the push rod causes the lower connecting steel ring connected to it to move along the axial direction of the grouting main rod. The movement of the lower connecting steel ring is converted into hinged motion through the movable rods, thereby pushing the grouting blade to rotate around its hinge point with the upper connecting steel ring, realizing radial expansion or contraction. Several grouting pipes are connected to the grouting blade. The grouting blade has a hollow cavity inside, which forms a grout flow channel and is connected to the grouting pipes.

[0006] More preferably, a conical block is fixed to the side of each grouting blade away from the grouting main rod; a U-shaped frame is fixed to the side of each grouting blade facing the grouting main rod, and the grouting pipe passes through the U-shaped frame.

[0007] More preferably, each grouting blade is connected to a baffle; each baffle is directly opposite a grouting pipe; each baffle has several through holes at the part facing the grouting pipe; each grouting pipe is connected to a U-shaped frame; the baffle and the U-shaped frame are slidably connected.

[0008] More preferably, each grouting blade is welded with two connecting rods, and all connecting rods on the same grouting blade are connected to the baffle through pins. By adjusting the position of the pins, the distance between the baffle and the bottom surface of the U-shaped frame can be changed, thereby adjusting the size of the horizontal diffusion channel of the grout.

[0009] More preferably, the movable rod is configured as an elastic telescopic rod, preferably a spring telescopic rod. When individual grouting blades encounter resistance during the unfolding or retraction process, the elastic telescopic rod can adaptively compress or stretch to avoid affecting the normal operation of other blades.

[0010] More preferably, the bottom of the umbrella-shaped grouting component module is connected to a detachable soil-breaking cone.

[0011] More preferably, the grouting main rod is multi-sectioned, and the multi-section grouting main rods are detachably connected end to end by a snap-fit ​​structure.

[0012] More preferably, the buckle structure includes an outer buckle pin of the grouting main rod at one end and an inner buckle of the grouting main rod at the other end. The buckle structure is an axial insertion type, and tool-free separation can be achieved by rotation or lifting operation after the grouting main rod is exposed to the ground surface.

[0013] More preferably, the umbrella-shaped grouting component module is detachably connected to the grouting main rod via a snap-fit ​​structure.

[0014] More preferably, when the grouting blade is retracted, its outer edge is basically flush with or smoothly transitions to the outer wall of the grouting main rod, so as to reduce the resistance when pulling out of the soil layer.

[0015] More preferably, the hinge points connecting the movable rod to the grouting blade and the connecting steel ring are all equipped with seals to prevent grout intrusion.

[0016] More preferably, the grouting blade and the upper connecting steel ring are detachably connected by a shear pin.

[0017] More preferably, a method for grouting using an umbrella-shaped, assembled, recyclable grouting device includes the following steps: S1. Press the umbrella-shaped grouting component module with the soil-breaking cone into the soil layer; S2. According to the predetermined grouting depth, connect the main grouting rod or additional umbrella-shaped grouting component modules in sequence, and press the entire equipment into the designated position; S3. Start the jacking device to deploy the grouting blades; S4. Grouting operations are carried out through the grouting pipes and grouting tubes inside the grouting equipment; S5. After grouting is completed, immediately start the reverse drive of the pusher before the grout initially sets, so that the pusher rod retracts and drives the lower connecting steel ring to move in the opposite direction. The moving rod pulls the grouting blade to retract and reset. S6. Using the reverse lifting function of the static pressure equipment, the grouting main rod is pulled out section by section, and after each section of the main rod is exposed to the ground, it is disassembled section by section through the buckle structure. S7. Separate the umbrella-shaped grouting component module from the grouting main rod, dismantle the soil-breaking cone, and complete the equipment recovery.

[0018] More preferably, when the retraction and resetting of step S5 cannot be completed before the initial setting of the grout, the shear pin is broken by lifting the grouting main rod in the reverse direction, the grouting blade is separated from the upper connecting steel ring, the grouting main rod and the pusher are pulled out and recycled separately, and the grouting blade is left in the stratum as a permanent reinforcement structure.

[0019] The beneficial effects of this invention are as follows: This invention, through its unique umbrella-shaped deployment, modular assembly, and fully recyclable design, comprehensively solves a series of core pain points in traditional grouting technology, such as small grouting range, low construction efficiency, poor geological adaptability, and serious material waste. After the grouting blades are deployed, they can achieve large-area uniform grouting, forming a reliable water-stopping barrier. After grouting, the blades are retracted by a reverse-driven pusher, and the main rod and grouting components are disassembled section by section using a snap-fit ​​structure, achieving complete recycling and reuse of the equipment. When recycling cannot be completed before initial setting, the main rod and blades are separated by shear pin breakage, ensuring that core components such as the main rod and pusher can be recycled and reused. This invention combines outstanding technological advancement, significant economic benefits, and good environmental value, and is particularly suitable for rapid grouting and disaster relief scenarios under complex geological conditions. Attached Figure Description

[0020] Figure 1 This is a diagram showing the effect of freely assembling the various components of this invention; Figure 2 This is a top view of the construction of this invention patent; Figure 3 This is a module diagram of the umbrella-shaped grouting component; Figure 4 This invention patent constructs a side view; Figure 5This is a detailed drawing of the grouting main rod; Figure 6 This is a detailed drawing of the jacking device; Figure 7 These are cross-sectional views of the conical block and the baffle. Figure 8 This is a top view of the U-shaped frame and the baffle; Figure 9 This is a side view of the U-shaped frame and the baffle.

[0021] The above-mentioned attached drawings include the following reference numerals: 1. Grouting blade, 101. Conical block, 102. U-shaped frame, 103. Baffle, 10301. Through hole, 104. Connecting rod, 2. Soil-breaking cone, 3. Connecting steel ring, 4. Movable rod, 5. Push rod, 6. Grouting main rod, 7. Pusher, 8. Grouting pipe, 9. Umbrella-shaped grouting component module, 10. Outer buckle pin of grouting main rod, 11. Inner buckle of grouting main rod. Detailed Implementation

[0022] The invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art. Example

[0023] An umbrella-shaped, modular, recyclable grouting device includes at least one grouting main rod 6; at least one umbrella-shaped grouting component module 9, the umbrella-shaped grouting component module 9 including a plurality of grouting blades 1, connecting steel rings 3, a plurality of movable rods 4, and a plurality of pushers 7; the connecting steel rings 3 are divided into two parts, the upper connecting steel ring 3 being fixed to the outer surface of the grouting main rod 6; the plurality of pushers 7 are all fixed to the grouting main rod and each is connected to the lower connecting steel ring 3 through a pusher rod 5; the plurality of grouting blades 1 are connected to the upper connecting steel ring 3; the plurality of movable rods 4 are all connected to the lower connecting steel ring 3; the plurality of movable rods 4 are all connected to the lower connecting steel ring 3; the plurality of movable rods 5 are all connected to the upper connecting steel ring 3; the plurality of movable rods 6 are all connected to the lower connecting steel ring 3; the plurality of movable rods 6 ... The movable rod 4 is connected to the corresponding grouting blade 1, and the number of movable rods 4 and grouting blades 1 is the same. When the pusher 7 is working, it drives the push rod 5 to extend and retract. The extension and retraction of the push rod 5 drives the lower connecting steel ring 3 connected to it to move along the axial direction of the grouting main rod 6. The movement of the lower connecting steel ring 3 is converted into a hinged motion through the movable rod 4, which in turn pushes the grouting blade 1 to rotate around its hinge point with the upper connecting steel ring 3, so as to achieve radial expansion or contraction. Several grouting pipes 8 are connected to the grouting blade 1. The grouting blade 1 has a hollow cavity inside, which forms a grout flow channel and is connected to the grouting pipes 8.

[0024] Each grouting blade 1 has a conical block 101 welded to the side away from the grouting main rod 6; each grouting blade 1 has a U-shaped frame 102 welded to the side facing the grouting main rod 6, and the grouting pipe 8 passes through the U-shaped frame 102.

[0025] Each grouting blade 1 is connected to a baffle 103; each baffle 103 is directly opposite a grouting pipe 8; each baffle 103 has several through holes 10301 at the part facing the grouting pipe 8; each grouting pipe 8 is connected to a U-shaped frame 102; the baffle 103 and the U-shaped frame 102 are slidably connected.

[0026] Two connecting rods 104 are welded on each grouting blade 1. All connecting rods 104 on the same grouting blade 1 are connected to the baffle 103 by pins. By adjusting the position of the pins, the distance between the baffle 103 and the bottom surface of the U-shaped frame 102 can be changed, thereby adjusting the size of the horizontal diffusion channel of the grout to adapt to soil layers with different permeability.

[0027] The movable rod 4 is set as a spring telescopic rod. When an individual grouting blade 1 encounters obstacles such as hard rocks during the unfolding or retraction process, the corresponding spring telescopic rod can adaptively compress or stretch to avoid affecting the normal operation of other grouting blades 1, and at the same time assist the grouting blade 1 in resetting after the obstacle is removed.

[0028] The bottom of the umbrella-shaped grouting component module 9 is connected to a detachable soil-breaking cone 2.

[0029] The grouting main rod 6 is multi-sectioned, and the multi-section grouting main rod 6 is detachably connected end to end by a snap-fit ​​structure; the pusher 7 is fixed to the grouting main rod 6 by annular welding; the snap-fit ​​structure includes an outer snap-fit ​​pin 10 of the grouting main rod 6 at one end and an inner snap-fit ​​pin 11 of the grouting main rod at the other end. The snap-fit ​​structure is an axial insertion type, and after the grouting main rod 6 is exposed on the ground surface, it can be separated without tools by rotation or lifting operation.

[0030] The umbrella-shaped grouting component module 9 is detachably connected to the grouting main rod 6 via a snap-fit ​​structure.

[0031] When the grouting blade 1 is retracted, its outer edge is basically flush with or smoothly transitions to the outer wall of the grouting main rod 6 to reduce resistance when pulling out of the soil layer; the hinge points connecting the movable rod 4 with the grouting blade 1 and the connecting steel ring 3 are all equipped with sealing sleeves to prevent grout intrusion, so as to prevent the grout from solidifying and affecting the flexibility of the movable parts.

[0032] The grouting blade 1 and the upper connecting steel ring 3 are detachably connected by a shear pin. The strength design of the shear pin should meet the following requirements: it should not break during normal deployment and retraction; after the grouting blade 1 is solidified and wrapped by the grout, when the grouting main rod 6 is lifted in the reverse direction by a static pressure device, the shear pin should break under a predetermined load, thereby achieving the separation of the grouting blade 1 and the grouting main rod 6.

[0033] The specific operation process is as follows: After confirming the required grouting depth, the soil-breaking cone 2 is installed on the umbrella-shaped grouting component module 9 using a snap-fit ​​connection. The combination of the soil-breaking cone 2 and the umbrella-shaped grouting component module 9 is then pressed into the soil using a static pressure device until the grouting main rod 6 protrudes 10cm above the ground surface.

[0034] Based on the previously obtained required grouting depth, select the grouting main rod 6 or the umbrella-shaped grouting component module 9 and connect it to the grouting main rod 6 slot that is 10cm above the ground surface. Then, use a static pressure device to press the entire grouting equipment down into the soil until the grouting main rod is exposed 10cm above the ground surface again. Then, select the grouting main rod 6 or the umbrella-shaped grouting component module 9 and connect it to the grouting main rod 6 slot that is 10cm above the ground surface. Continue in this manner until the entire grouting equipment reaches the predetermined grouting position.

[0035] After the grouting equipment reaches the designated position, each pusher 7 is activated. After each pusher 7 is working, the pusher rod 5 will gradually rise. The gradual rise of the pusher rod 5 will drive the lower connecting steel ring 3 and the movable rod 4 to rise, thereby pushing the grouting blade 1 to slowly unfold like an umbrella. The grouting pipe 8 is located on the back of the grouting blade 1. During the unfolding process, if an individual grouting blade 1 encounters an obstacle such as a hard rock, the corresponding movable rod 4 with a spring telescopic rod will adaptively compress. After the obstacle is broken by the blade cone block 101, the spring telescopic rod will automatically reset, allowing the grouting blade 1 to continue unfolding, ensuring that the overall unfolding effect is not affected.

[0036] After each umbrella-shaped grouting component module 9 is deployed to the designated position, the grout is uniformly, multi-layeredly and over a wide area injected and reinforced to the target position through the grouting pipe inside the grouting equipment and the grouting pipe 8 located on the back of the grouting blade 1, so as to achieve the purpose of rapid water stoppage.

[0037] A conical block 101 is welded to the side of each grouting blade 1 away from the grouting main rod 6. In this way, when the grouting blade 1 slowly unfolds like an umbrella, the grouting blade 1 can smoothly break through the soil with the help of the conical block 101, thus unfolding smoothly.

[0038] A baffle 103 is installed on the grouting pipe 8, directly opposite the grouting pipe 8. The grout injected from the grouting pipe 8 will spray onto the baffle 103, which allows the grout to flow to both sides, thus spreading more evenly. This guiding effect helps the grout to be distributed more evenly around the target soil, forming a complete and dense grout body, thereby improving the reinforcement and water-stopping effect. After the grout injected from the grouting pipe 8 sprays onto the baffle 103, a large portion of the grout is directly and vertically reflected, with only a small portion flowing to both sides. This results in poor diffusion effect. Therefore, a U-shaped frame 102 is set between the grouting pipe 8 and the baffle 103. The U-shaped frame 102 restricts the reflected grout, so that the grout can only flow to both sides, thereby ensuring the diffusion effect of the grout. In addition, several through holes 10301 are opened in the part of the baffle 103 opposite to the grouting pipe 8. Some grout can penetrate vertically into the target soil above the baffle 103 through the through holes 10301, thereby making the grout filling range wider and improving the reinforcement and water-stopping effect.

[0039] Construction workers can fine-tune the distance between the baffle 103 and the inner bottom surface of the U-shaped frame 102 as needed, thereby changing the size of the horizontal diffusion channel of the grout to adapt to soil layers with different permeability: for compact soil, the horizontal diffusion channel of the grout is reduced, and according to Bernoulli's principle, the diffusion speed of the grout increases, making it easier to diffuse into the soil; for loose soil, the horizontal diffusion channel of the grout is reduced to slow down the diffusion speed of the grout and avoid excessive grout speed that could damage the soil structure. The specific operation for adjusting the distance between the baffle 103 and the inner bottom surface of the U-shaped frame 102 is as follows: first, remove the pin between the connecting rod 104 and the baffle 103, then adjust the distance between the baffle 103 and the inner bottom surface of the U-shaped frame 102. After adjustment, insert the pin between the connecting rod 104 and the baffle 103 back in to fix it.

[0040] The recovery process after grouting is as follows: After the grouting operation is completed, the jacking device 7 should be started in reverse immediately before the grout initially sets, so that the jacking rod 5 retracts and drives the lower connecting steel ring 3 to move downward. The movable rod 4 pulls the grouting blade 1 to retract and reset around the hinge point. At this time, the grout has not yet solidified, so the wrapping force on the grouting blade 1 is weak and the retraction resistance is small, which will not damage the grouting structure. If individual grouting blades 1 fail to retract completely due to the resistance of grout or soil, the spring extension and contraction of the corresponding movable rod 4 can provide an auxiliary reset force to ensure that the grouting blade 1 is retracted as a whole.

[0041] After all the grouting blades 1 of the umbrella-shaped grouting component modules 9 are retracted, the grouting main rod 6 is lifted in the reverse direction using a static pressure device. When the first section of the grouting main rod 6 protrudes 10 to 15 cm above the ground, the buckle connection between it and the next section of the main rod is released by rotation or lifting, and the first section of the main rod is removed. Repeat the above steps to pull each section of the grouting main rod 6 and the umbrella-shaped grouting component modules 9 out of the ground in sequence. Finally, the soil breaking cone 2 is disassembled to complete the overall recovery of the equipment.

[0042] If recycling cannot be completed before initial setting due to construction needs, a separate recycling method can be adopted: the grouting main rod 6 is lifted in reverse by a static pressure device, causing the shear pin between the grouting blade 1 and the upper connecting steel ring 3 to break. The grouting main rod 6 and the pusher 7 are then pulled out and recycled separately, while the grouting blade 1 remains in the stratum as a permanent reinforcement structure. Since the outer edge of the grouting blade 1 is basically flush with the outer wall of the grouting main rod 6 after it is retracted, and each hinge point is equipped with a sealing sleeve to prevent the grout from solidifying and affecting its mobility, the recycling process has low resistance and smooth operation, and each component can be completely recycled for future use.

[0043] When a grouting blade 1 encounters a large, hard rock in the soil during its deployment, the rock will hinder its deployment. The pusher 7 continues to push the push rod 5 to deploy the remaining grouting blades 1 for grouting operations. At this time, the movable rod 4 with spring extension corresponding to the obstructed grouting blade 1 will be compressed, thus avoiding affecting the deployment of other grouting blades 1. It should be noted that the spring in the spring extension rod can only be compressed under a large force. Therefore, when the grouting equipment is pressed down into a soil layer without hard rocks, the spring extension rod will not be compressed, and thus will not affect the deployment of the grouting blades 1.

[0044] The technical principles of the embodiments of the present invention have been described above with reference to specific examples. These descriptions are merely for explaining the principles of the embodiments of the present invention and should not be construed as limiting the scope of protection of the embodiments of the present invention in any way. Based on the explanation herein, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the embodiments of the present invention.

Claims

1. An umbrella-shaped, assembled, recyclable grouting device, comprising at least one grouting main rod (6). Its features are: It also includes at least one umbrella-shaped grouting component module (9), which includes several grouting blades (1), connecting steel rings (3), several movable rods (4) and several pushers (7). The connecting steel ring (3) is divided into two parts. The upper connecting steel ring (3) is fixedly connected to the outer surface of the grouting main rod (6); the lower connecting steel ring (3) is slidably sleeved on the outer surface of the grouting main rod (6). The plurality of pushers (7) are all fixed on the grouting main rod (6) and connected to the lower connecting steel ring (3) through the pusher rod (5); One end of each of the plurality of grouting blades (1) is hinged to the upper connecting steel ring (3); The two ends of the plurality of movable rods (4) are respectively hinged to the lower connecting steel ring (3) and the corresponding grouting blade (1), and the number of movable rods (4) and grouting blades (1) is the same; When the pusher (7) is working, it drives the pusher rod (5) to extend and retract; the extension and retraction of the pusher rod (5) causes the lower connecting steel ring (3) connected to it to move along the axial direction of the grouting main rod (6); the movement of the lower connecting steel ring (3) is converted into hinge motion through the movable rod (4), which in turn pushes the grouting blade (1) to rotate around its hinge point with the upper connecting steel ring (3), so as to achieve radial expansion or contraction; The grouting blade (1) has a hollow cavity inside, and the grouting blade (1) is connected to a number of grouting pipes (8).

2. The umbrella-shaped, assembled, recyclable grouting device according to claim 1, characterized in that: A conical block (101) is fixed to the side of the grouting blade (1) away from the grouting main rod (6); a U-shaped frame (102) is fixed to the side of the grouting blade (1) facing the grouting main rod (6), and the grouting pipe (8) passes through the U-shaped frame (102).

3. The umbrella-shaped, assembled, recyclable grouting device according to claim 2, characterized in that: The grouting blade (1) is also provided with a baffle (103); the baffle (103) is slidably connected to the U-shaped frame (102), and the baffle (103) has several through holes (10301) at the part facing the grouting pipe (8); the baffle (103) is adjustablely connected to the connecting rod (104) on the grouting blade (1) by a pin, and the distance between the baffle (103) and the inner bottom surface of the U-shaped frame (102) can be changed by adjusting the position of the pin, thereby adjusting the size of the horizontal diffusion channel of the grout.

4. The umbrella-shaped, assembled, recyclable grouting device according to claim 1, characterized in that: The movable rod (4) is an elastic telescopic rod.

5. The umbrella-shaped, assembled, recyclable grouting device according to claim 1, characterized in that: The grouting main rod (6) is multi-sectioned, and the multi-sectioned grouting main rod (6) is detachably connected end to end by a snap-fit ​​structure; the umbrella-shaped grouting component module (9) is also detachably connected to the grouting main rod (6) by a snap-fit ​​structure.

6. The umbrella-shaped, assembled, recyclable grouting device according to claim 5, characterized in that: The buckle structure is an axial insertion type.

7. The umbrella-shaped, assembled, recyclable grouting device according to claim 1, characterized in that: When the grouting blade (1) is retracted, its outer edge is basically flush with or smoothly transitions to the outer wall of the grouting main rod (6) to reduce the resistance when pulling out the soil layer; the movable rod (4) is provided with a sealing sleeve to prevent grout intrusion at the connection hinge point with the grouting blade (1) and the connecting steel ring (3).

8. The umbrella-shaped, assembled, recyclable grouting device according to claim 1, characterized in that: The grouting blade (1) and the upper connecting steel ring (3) are detachably connected by a shear pin.

9. A method for grouting using an umbrella-shaped, assembled, recyclable grouting device as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1. Press the umbrella-shaped grouting component module (9) with the soil-breaking cone (2) into the soil layer; S2. According to the predetermined grouting depth, connect the grouting main rod (6) or additional umbrella-shaped grouting component module (9) in sequence, and press the entire equipment into the designated position; S3. Start the jacking device (7) to unfold the grouting blade (1); S4. Grouting operation is carried out through the grouting pipe and grouting tube (8) inside the grouting equipment; S5. After grouting is completed, immediately start the pusher (7) in reverse drive before the grout sets, so that the pusher rod (5) retracts and drives the lower connecting steel ring (3) to move in reverse. The moving rod (4) pulls the grouting blade (1) to retract and reset. S6. Using the reverse lifting function of the static pressure equipment, the grouting main rod (6) is pulled up section by section, and after each section of the main rod is exposed to the ground, it is disassembled section by section through the buckle structure. S7. Separate the umbrella-shaped grouting component module (9) from the grouting main rod (6), disassemble the soil breaking cone (2), and complete the equipment recovery.

10. The method according to claim 9, characterized in that: When the retraction and resetting of step S5 cannot be completed before the initial setting of the grout, the shear pin described in claim 8 is broken by lifting the grouting main rod (6) in the reverse direction, the grouting blade (1) is separated from the upper connecting steel ring (3), the grouting main rod (6) and the pusher (7) are pulled out and recycled separately, and the grouting blade (1) is left in the stratum as a permanent reinforcement structure.

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