Drainage grouting device

Abstract

The invention relates to a drainage grouting device which comprises a cylindrical pipe column, a connecting rod is fixedly connected in the cylindrical pipe column, the connecting rod is in sliding connection with a lifting rod, the lifting rod is connected with a traction sleeve, the traction sleeve is arranged on the outer wall of the cylindrical pipe column in a sleeving mode, and a positioning sleeve is fixedly connected to the outer wall of the cylindrical pipe column. The positioning sleeve is located above the traction sleeve, a plurality of water collecting and grouting structures are connected between the positioning sleeve and the traction sleeve, the lifting rod and the traction sleeve are both connected with the driving unit, the driving unit is used for driving the lifting rod to move upwards, and the lifting rod moves upwards to pull the lower ends of the sleeve and the water collecting and grouting structures to move upwards. And after the traction sleeve moves upwards to a set position, the driving unit is also used for driving the traction sleeve to rotate. The drainage grouting device is easy to operate and does not need to consume a large number of manpower resources; and after drainage, grouting can be directly carried out without replacing extra equipment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of soft soil foundation treatment, and particularly relates to a drainage grouting device. BACKGROUND

[0002] Soft soil foundation has the disadvantages of low strength and poor stability, and has obvious rheological property, so the existence of soft soil foundation has a direct impact on the quality of municipal engineering, for example, the existence of soft soil foundation can cause pipeline sinking and fracture, road surface sinking, collapse and cracks, etc.

[0003] At present, based on the technical thought of combination method, a new composite foundation treatment technology is formed by combining the advantages of two or more treatment methods on the basis of traditional foundation treatment methods, such as grouting broken stone pile, concrete core sandstone pile, permeable concrete pile, casing drainage pile, etc., which shows strong vitality in the field of soft foundation treatment; however, the current composite foundation treatment technology is complex and cumbersome, and the cost is extremely high, which is not conducive to investment control, so in the process of treating soft soil foundation, a technology that can simplify the process flow and control the investment cost is urgent. SUMMARY

[0004] In order to solve all or part of the above problems, the present application aims to provide a drainage grouting device, which can be used for drainage and grouting two processes, and is simple to operate without consuming a large amount of human resources.

[0005] According to one aspect of the present application, a drainage grouting device is provided, which comprises a cylindrical pipe column, a connecting rod is fixedly connected in the cylindrical pipe column, the connecting rod is in sliding connection with a lifting rod, the lifting rod is connected with a traction sleeve, the traction sleeve is sleeved on the outer wall of the cylindrical pipe column, the outer wall of the cylindrical pipe column is fixedly connected with a positioning sleeve, the positioning sleeve is located above the traction sleeve, a plurality of water collecting and grouting structures are connected between the positioning sleeve and the traction sleeve, the lifting rod is connected with a driving unit, the driving unit is used to drive the lifting rod to move upward, the lower end of the traction sleeve and the water collecting and grouting structure moves upward with the lifting rod moving upward, and after the traction sleeve moves upward to a set position, the lifting rod is fixedly connected with the connecting rod, the driving unit starts to drive the water collecting and grouting structure to rotate through the lifting rod and the connecting rod, the rotation of the water collecting and grouting structure can make the underground water in the soil enter the cylindrical pipe column through the water collecting and grouting structure, and the rotation of the water collecting and grouting structure can also make the cement slurry in the cylindrical pipe column enter the soil.

[0006] Further, the positioning sleeve is fixed on the outer wall of the cylindrical pipe column through a first connecting pin, and the first connecting pin is connected with the upper end of the water collecting and grouting structure.

[0007] Further, the traction sleeve is connected with the outer wall of the cylindrical pipe column through a second connecting pin, and the outer wall of the cylindrical pipe column is provided with a sliding groove, and the second connecting pin can slide up and down in the sliding groove.

[0008] Further, the outer wall of the cylindrical pipe column is provided with a communication hole, and the water collecting and grouting structure can make the groundwater in the soil enter into the cylindrical pipe column through the water collecting and grouting structure and the communication hole, and can make the cement slurry in the cylindrical pipe column enter into the soil through the communication hole and the water collecting and grouting structure.

[0009] Further, the lower end of the cylindrical pipe column is connected with a conical head, and the driving unit is arranged in the conical head.

[0010] Further, the water collecting and grouting structure is a hollow tubular structure, and the upper side of the upper water collecting and grouting structure and the upper side of the lower water collecting and grouting structure are provided with water collecting structures, which are used for connecting the inside of the water collecting and grouting structure and the soil outside the water collecting and grouting structure.

[0011] Further, the water collecting structure comprises a water-permeable mud-separating layer at the outermost layer, a water collecting layer at the middle part and a water-separating mud-separating layer at the innermost layer, the water-separating mud-separating layer is provided with a water-permeable hole, and the water in the soil enters into the inside of the water collecting and grouting structure through the water-permeable mud-separating layer, the water collecting layer and the water-permeable hole in sequence.

[0012] Further, the cross section of any one of the water collecting and grouting structures perpendicular to the axial direction is a fan-shaped structure formed by two circular rings and two outer common tangents of the two circular rings, and the radius of the front circular shape is smaller than the radius of the rear circular shape along the rotation direction of the water collecting and grouting structure.

[0013] Further, the cylindrical pipe column is provided with a water collecting and grouting groove and a drainage and grouting pipe, the groundwater entering into the cylindrical pipe column is located in the water collecting and grouting groove, and the drainage and grouting pipe is used for being connected with a water pump to pump out the groundwater in the water collecting and grouting groove.

[0014] Further, six water collecting and grouting structures are connected between the positioning sleeve and the traction sleeve.

[0015] From the above technical solution, the drainage and grouting device provided by the application has the following beneficial effects:

[0016] The drainage and grouting device of the application is simple to operate and does not need to consume a large amount of human resources, and after drainage, the device can directly perform grouting without the need for additional equipment. The device of the application can simplify the soft soil foundation treatment process and improve the bearing capacity of the soft soil foundation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the drainage grouting device according to an embodiment of the present invention, assuming the drive unit has not yet been started.

[0018] Figure 2 This is a front view of the drainage grouting device according to an embodiment of the present invention, before the drive unit is started.

[0019] Figure 3 This is a cross-sectional view of the drainage grouting device according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the drainage grouting device according to an embodiment of the present invention when the drive unit is started;

[0021] Figure 5 This is a schematic diagram of the drainage grouting device according to an embodiment of the present invention when the drive unit is started;

[0022] Figure 6 This is a schematic diagram of a water collection grouting structure;

[0023] Figure 7 This is a schematic diagram of the drive unit. Detailed Implementation

[0024] To better understand the purpose, structure, and function of this invention, a drainage grouting device of this invention will be described in further detail below with reference to the accompanying drawings.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown in the figure, it shows a drainage grouting device of the embodiment of the present application, which comprises a cylindrical pipe column 1, a connecting rod 6 fixedly connected in the cylindrical pipe column 1, a lifting rod 5 slidably connected with the connecting rod 6, a traction sleeve 25 connected with the lifting rod 5, the traction sleeve 25 sleeved on the outer wall of the cylindrical pipe column 1, a positioning sleeve 21 fixedly connected on the outer wall of the cylindrical pipe column 1, the positioning sleeve 21 located above the traction sleeve 25, a plurality of water collecting and grouting structures 23 connected between the positioning sleeve 21 and the traction sleeve 25, a driving unit 4 connected with the lifting rod 5, the driving unit 4 used for driving the lifting rod 5 to move upward, the lifting rod 5 moving upward, the lower end of the traction sleeve 25 and the water collecting and grouting structure 23 moving upward, and the lifting rod and the connecting rod 6 fixedly connected after the traction sleeve 25 moving upward to the set position, the driving unit 4 driving the water collecting and grouting structure 23 to rotate through the lifting rod 5 and the connecting rod 6, the water collecting and grouting structure 23 rotating to enable the underground water in the soil to enter the cylindrical pipe column 1 through the water collecting and grouting structure 23, and the water collecting and grouting structure 23 rotating to enable the cement slurry in the cylindrical pipe column 1 to enter the soil.

[0026] Specifically, the drainage grouting device of the embodiment comprises a cylindrical pipe column 1, a positioning sleeve fixed on the outer wall of the cylindrical pipe column 1, a traction sleeve 25 sleeved on the outer wall of the cylindrical pipe column 1, one end of a plurality of water collecting and grouting structures 23 connected with the positioning sleeve 21, the other end connected with the traction sleeve 25, the traction sleeve 25 connected with the lifting rod, and the lifting rod connected with the driving unit 4.

[0027] Specifically in use, the driving unit 4 drives the lifting rod 5 to move upward relative to the connecting rod 6, the lifting rod 5 moving upward, the lower end of the traction sleeve 25 and the water collecting and grouting structure 23 moving upward, at this time the plurality of water collecting and grouting structures 23 begin to open outward, the lifting rod 5 and the connecting rod 6 forming an integral whole after the traction sleeve 25 moving upward to the set position, at this time the driving unit 4 drives the lifting rod 5 and the connecting rod 6 to rotate, so that the water collecting and grouting structure 23 begins to rotate, and a pressure difference is formed between the cylindrical pipe column 1 and the soft soil foundation; when it is needed to extract the underground water in the soft soil foundation, the water collecting and grouting structure 23 rotates, the underground water in the soft soil foundation enters the cylindrical pipe column 1 through the water collecting and grouting structure 23 and the cylindrical pipe column 1, and then the underground water in the cylindrical pipe column 1 can be extracted through the water pump; when the underground water in the soft soil foundation is extracted to be able to grout, the cement slurry is injected into the cylindrical pipe column 1, the water collecting and grouting structure 23 continues to rotate through the driving unit, and the cement slurry is injected into the stratum through the cylindrical pipe column 1 and the water collecting and grouting structure 23.

[0028] For the driving unit 4, as shown in the figure, it comprises a motor 41, a rotating shaft 42 connected with the motor 41, a rotating plate 43 connected with the rotating shaft 42, a rotating rod 44 connected with the rotating plate 43, and a rotating sleeve 45 connected with the rotating rod 44. Figure 7As shown, it comprises a driving motor, a motor shaft of the driving motor is fixedly connected with a driving gear, the driving gear is engaged with a driven gear 10, and the driving motor rotates to drive the driven gear 10 to rotate. In order to realize the upward movement of the lifting rod 5 relative to the connecting rod 6, the lifting rod can be connected with the gear shaft of the driven gear as the nut of the screw-nut pair, and the gear shaft of the driven gear is fixedly connected with the driven gear. Therefore, the rotation of the driven gear 10 drives the gear shaft of the driven gear to rotate, the gear shaft of the driven gear acts as the screw of the screw-nut pair, and the gear shaft of the driven gear rotates to drive the lifting rod connected therewith to move upward, thereby achieving the purpose of upward movement of the lifting rod. The upper end of the lifting rod is provided with a thread, and the corresponding position of the connecting rod is provided with a threaded hole. When the lifting rod moves upward to the position where the thread is in contact with the threaded hole, it is equivalent to starting to screw the thread. When the traction sleeve 25 moves upward to the set position, the thread of the lifting rod cooperates with the threaded hole of the connecting rod to make the lifting rod start to form an integral body with the connecting rod. At this time, the lifting rod moves upward to the upper limit position, that is, the lifting rod cannot continue to move upward. At this time, the driving motor continues to rotate, the driven gear 10 rotates, the gear shaft of the driven gear rotates, the lifting rod starts to rotate, the lifting rod starts to rotate to drive the connecting rod to rotate, and the connecting rod rotates to drive the traction sleeve 25, the positioning sleeve 21 and the plurality of water collecting and grouting structures 23 to rotate. Secondly, engagement gears 9 can be arranged between the driving gear and the driven gear 10 as needed.

[0029] The drainage grouting device of the embodiment of the application is simple to operate and does not need to consume a large amount of human resources. After drainage, grouting can be directly performed without the need for replacing additional equipment. The device of the embodiment of the application simplifies the soft soil foundation treatment process and improves the bearing capacity of the soft soil foundation.

[0030] In specific implementation, according to the water content of the soft soil foundation, a plurality of overall systems formed by the positioning sleeves 21, the traction sleeves 25 and the water collecting and grouting structures 23 can be arranged outside the cylindrical pipe column 1, so as to accelerate the efficiency of water entering the cylindrical pipe column 1 in the soft soil foundation. Generally, two overall systems can meet the requirements for a soft soil layer of 3-4 m, and three overall systems can meet the requirements for a soft soil layer of 4-6 m. Figure 4 and Figure 5 Both the first aspect and the second aspect are provided with two overall systems formed by the positioning sleeves 21, the traction sleeves 25 and the water collecting and grouting structures 23.

[0031] In specific implementation, six water collecting and grouting structures 23 are arranged between each positioning sleeve 21 and the corresponding traction sleeve 25.

[0032] The connecting rod 6 has the function of a sliding groove, and the lifting rod 5 can slide up and down in the connecting rod 6. The lifting rod 5 is connected with the traction sleeve 25, and the upward and downward sliding movement of the lifting rod 5 can drive the traction sleeve 25 to move upward and downward, so as to expand and gather the water collecting and grouting structures 23.

[0033] The positioning sleeve 21 is fixed to the outer wall of the cylindrical pipe column 1 by a first connecting pin 22, and the first connecting pin 22 is connected to the upper end of the water collecting and grouting structure 23.

[0034] The traction sleeve 25 is connected to the outer wall of the cylindrical pipe column 1 by a second connecting pin 24, and the outer wall of the cylindrical pipe column 1 is provided with a sliding groove, the second connecting pin 24 can slide up and down in the sliding groove, and the second connecting pin 24 is connected to the lower end of the water collecting and grouting structure 23.

[0035] The outer wall of the cylindrical pipe column 1 is provided with a communication hole, and the rotation of the water collecting and grouting structure 23 can make the underground water in the soil enter the cylindrical pipe column 1 through the water collecting and grouting structure 23 and the communication hole, and the cement slurry in the cylindrical pipe column 1 can enter the soil through the communication hole and the water collecting and grouting structure 23.

[0036] The sliding groove is provided for cooperation with the second connecting pin 24, so that the second connecting pin 24 can slide up and down in the sliding groove, and the traction sleeve 25 can follow the up and down movement of the lifting rod 5, and the upward movement of the traction sleeve 25 is used to unfold the water collecting and grouting structure 23.

[0037] The outer wall of the cylindrical pipe column 1 is provided with a communication hole, and the rotation of the water collecting and grouting structure 23 can make the underground water in the soil enter the cylindrical pipe column 1 through the water collecting and grouting structure 23 and the communication hole, and the cement slurry in the cylindrical pipe column 1 can enter the soil through the communication hole and the water collecting and grouting structure 23.

[0038] The lower end of the cylindrical pipe column 1 is connected with a conical head 3, and the driving unit 4 is arranged in the conical head. In specific implementation, the conical head can be arranged as a closed structure to separate the driving unit 4 from water or cement slurry.

[0039] The water collecting and grouting structure 23 is a hollow tubular structure, and the middle part of the water collecting and grouting structure 23 in the length direction is taken as a demarcation line, the upper side of the upper water collecting and grouting structure 23 and the upper side of the lower water collecting and grouting structure 23 are both provided with a water collecting structure, and the water collecting structure is used to connect the inside of the water collecting and grouting structure 23 and the soil outside the water collecting and grouting structure 23.

[0040] For the underground water in the soft soil foundation, it penetrates from top to bottom under its own gravity in a pressureless state; after the traction sleeve moves to the set position, the water collecting and grouting structure 23 is in the shape of unfolding outward in the middle, for example, the water collecting and grouting structure 23 on the left side of the cylindrical pipe column 1 unfolds outward to form a "<" shape, in order to make the water flow smoothly into the water collecting and grouting structure 23, the upper side of the upper water collecting and grouting structure 23 and the upper side of the lower water collecting and grouting structure 23 are both provided with water collecting structures, so that the water flows into the water collecting and grouting structure 23 through the water collecting structures; in specific implementation, for example, the upper side of the upper water collecting and grouting structure 23 and the upper side of the lower water collecting and grouting structure 23 are both provided with windows for water flow, and the water collecting structures are connected at the windows.

[0041] As shown in Figure 6 The water collecting structure includes the outermost water-permeable mud barrier layer 231, the middle water collecting layer 233 and the innermost water-proof mud barrier layer 234, the water-proof mud barrier layer 234 is provided with water-permeable holes 232, and the water in the soil enters the inside of the water collecting and grouting structure 23 through the water-permeable mud barrier layer 231, the water collecting layer 233 and the water-permeable holes 232 in sequence.

[0042] For the underground water in the soft soil foundation, the water first enters the water-permeable mud barrier layer 231 and then enters the water collecting layer 233, in this process, the water can enter the water collecting layer 233 while the mud is intercepted outside due to the blocking of the water-permeable mud barrier layer 231, and the water-proof mud barrier layer 234 prevents the water from seeping downward, so that the water collecting and grouting structure 23 is approximately in a 90° bending state, the water enters the water-permeable holes 232 along the water collecting layer 233 and then enters the water collecting and grouting structure 23, and finally the water enters the cylindrical pipe column 1 through the water-permeable holes 232, for example, one water-permeable hole 232 is provided at every interval.

[0043] For the water collecting and grouting structure 23: the cross section of any water collecting and grouting structure 23 perpendicular to the axial direction is a fan-shaped structure formed by two circular rings and two outer common tangents of the two circular rings, and the radius of the front circular shape is smaller than the radius of the rear circular shape in the rotation direction of the water collecting and grouting structure 23; the middle part of the water collecting and grouting structure 23 is flexibly arranged so that it can bend in the middle part.

[0044] The cylindrical pipe column 1 is provided with a water collecting and grouting groove 8 and a drainage and grouting pipe 7, the underground water entering the cylindrical pipe column 1 is located in the water collecting and grouting groove 8, and the drainage and grouting pipe 7 is used to be connected with a water pump to pump out the underground water in the water collecting and grouting groove 8.

[0045] The working principle of the drainage and grouting device according to the embodiment of the application is as follows:

[0046] During the drainage construction, first, the pile driving equipment is used to drive the cylindrical pipe column 1 into the soft soil foundation, and then the driving unit 4 is started, as shown in Figures 4-5As shown, the transmission device in the driving unit 4 will lift the lifting rod 5 in the cylindrical pipe pile 1, the traction sleeve 25 connected with the lifting rod 5 will be lifted, and the water collecting and grouting structure 23 connected therewith will be unfolded in the soft soil foundation until the water collecting and grouting structure 23 forms a 45° angle with the axis of the cylindrical pipe pile 1, and the effective range of the water collecting and grouting structure 23 in the soft soil foundation is 1 m; according to the actual water content of the soft soil foundation, the rotation rate of the driving unit 4 is set, and the air in the water collecting and grouting groove 8 is also discharged, and the pressure difference between the cylindrical pipe pile 1 and the soft soil foundation is formed, so that the water in the soft soil foundation enters the water collecting layer 233 through the water permeable isolation layer 231, the water in the water collecting layer 233 enters the water collecting and grouting structure 23 through the water permeable hole 232, and the water in the water collecting and grouting structure 23 flows into the water collecting and grouting groove 8 in the cylindrical pipe pile 1, and when the water in the water collecting and grouting groove 8 reaches a certain volume, it will be extracted from the drainage and grouting pipe 7 together, so as to realize the purpose of drainage of the soft soil foundation.

[0047] During grouting construction, when the water in the soft soil foundation is discharged to the point that grouting can be performed, the drainage construction is stopped, the driving unit 4 is started again, the cement slurry is injected from the drainage and grouting pipe 7, the cement slurry enters the water collecting and grouting groove 8 along the drainage and grouting pipe 7, then enters the drainage and grouting structure 23, and finally the cement slurry enters the soft soil foundation through the water permeable hole 232; during grouting, the rate of the cement slurry entering the circular pipe pile 1 is reasonably controlled, and then the rate of the cement slurry entering the soft soil foundation is controlled, and at the same time of injecting the cement slurry, the water collecting and grouting structure 23 is rotated at a set speed, so that the cement slurry is fully combined with the soft soil foundation, and the bearing capacity of the soft soil foundation is increased; after grouting is completed, the driving motor is controlled to reverse to drive the lifting rod 5 in the cylindrical pipe pile 1 to descend, the traction sleeve 25 connected with the lifting rod 5 will descend to drive the water collecting and grouting structure 23 to gather in the soft soil foundation and integrate with the cylindrical pipe pile 1.

[0048] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by the skilled person in the field to which the present application belongs.

[0049] In addition, the terms "one", "two" and the like are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0050] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and the like should be construed broadly and can be either fixed connections or detachable connections, or integral; can be mechanical or electrical connections; can be direct connections, or indirect connections via intermediate media, or internal communication or interaction between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0051] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A drainage grouting device, characterized by, The utility model provides a kind of water collecting and grouting structure, including cylindrical pipe column (1), connecting rod (6) is fixedly connected in the cylindrical pipe column (1), connecting rod (6) is slidably connected with lifting rod (5), lifting rod (5) is connected with traction sleeve (25), traction sleeve (25) is sleeved on the outer wall of the cylindrical pipe column (1), the outer wall of the cylindrical pipe column (1) is fixedly connected with positioning sleeve (21), positioning sleeve (21) is located above traction sleeve (25), positioning sleeve (21) and traction sleeve (25) are connected with several water collecting and grouting structures (23), lifting rod (5) is connected with drive unit (4), drive unit (4) is used to drive lifting rod (5) to move upwards, lifting rod (5) moves upwards, and the lower end of traction sleeve (25) and water collecting and grouting structure (23) moves upwards along with it, and after traction sleeve (25) moves upwards to set position, lifting rod and connecting rod (6) are fixedly connected, drive unit (4) starts to drive water collecting and grouting structure (23) to rotate by lifting rod (5) and connecting rod (6), water collecting and grouting structure (23) rotates can make groundwater in soil into the cylindrical pipe column (1) by water collecting and grouting structure (23), and water collecting and grouting structure (23) rotates can also make cement slurry in the cylindrical pipe column (1) into soil.

2. The drain grouting device according to claim 1, characterized in that Positioning sleeve (21) is fixed on the outer wall of the cylindrical pipe column (1) by first connecting pin (22), and the first connecting pin (22) is connected with the upper end of water collecting and grouting structure (23).

3. The drain grouting device according to claim 1, characterized in that Traction sleeve (25) is connected with the outer wall of the cylindrical pipe column (1) by second connecting pin (24), and the outer wall of the cylindrical pipe column (1) is provided with a sliding groove, and the second connecting pin (24) can slide up and down in the sliding groove.

4. The drain grouting device according to claim 3, characterized in that The outer wall of the cylindrical pipe column (1) is provided with a communication hole, and the water collecting and grouting structure (23) rotates can make groundwater in soil into the cylindrical pipe column (1) by water collecting and grouting structure (23) and the communication hole, and can make cement slurry in the cylindrical pipe column (1) into soil by the communication hole and water collecting and grouting structure (23).

5. The drain grouting device according to claim 1, wherein The lower end of the cylindrical pipe column (1) is connected with a tapered head (3), and the drive unit is arranged in the tapered head.

6. The drain grouting device according to claim 1, characterized by The water collecting and grouting structure (23) is a hollow tubular structure, and the upper side of the water collecting and grouting structure (23) above the middle and the upper side of the water collecting and grouting structure (23) below the middle are provided with water collecting structures for connecting the inside of the water collecting and grouting structure (23) and the soil outside the water collecting and grouting structure (23).

7. The drain grouting device according to claim 6, characterized in that The water collecting structure comprises an outermost water-permeable mud barrier layer (231), a middle water collecting layer (233) and an innermost water-proof mud barrier layer (234), the water-proof mud barrier layer (234) is provided with water-permeable holes (232), and water in the soil enters the inside of the water collecting and grouting structure (23) through the water-permeable mud barrier layer (231), the water collecting layer (233) and the water-permeable holes (232) in sequence.

8. The drain grouting device according to claim 6, characterized in that Any one of the water collecting and grouting structures (23) is a fan-shaped structure formed by two circular rings and two outer common tangents of the two circular rings in the direction perpendicular to the axis of the water collecting and grouting structure (23), and the radius of the front circular shape is smaller than the radius of the rear circular shape in the rotating direction of the water collecting and grouting structure (23).

9. The drain grouting device according to claim 1, characterized by The cylindrical pipe column (1) is provided with a water collecting and grouting groove (8) and a drainage and grouting pipe (7), underground water entering the cylindrical pipe column (1) is located in the water collecting and grouting groove (8), and the drainage and grouting pipe (7) is used to be connected with a water pump to pump out the underground water in the water collecting and grouting groove (8).

10. The drain grouting device according to claim 1, characterized in that Six water collecting and grouting structures (23) are connected between the positioning sleeve (21) and the traction sleeve (25).

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