Shallow sludge foundation drainage device

Abstract

The invention relates to the technical field of foundation treatment, in particular to a shallow sludge foundation drainage device which comprises a laying frame, a plurality of water suction pipes are arranged in the laying frame, a grid screen and a drainage plate are sequentially arranged on the inner side of the laying frame and located on the outer sides of the water suction pipes from top to bottom, and a drainage pipe is arranged at the top end of each water suction pipe. A water suction pipe is arranged in the water drainage pipe, a vacuum device is arranged at one end of the water drainage pipe, the vacuum device is used for pumping out water in the sludge foundation, the water suction pipe comprises a movable pipe, the outer side of the movable pipe is sleeved with a plurality of positioning pipes, and the positioning pipes are fixedly connected with the surfaces of the water drainage pipe, the grid screen and the water drainage plate correspondingly. Due to the fact that the movable pipe is in threaded fit with the positioning pipe, the overall length of the water suction pipe is adjusted, the position of a water suction opening of a pipeline can be adjusted according to the actual silt layer depth, it is ensured that drainage operation is accurate and efficient, and the foundation treatment effect is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of foundation treatment, in particular to a shallow mud foundation drainage device. Background Art

[0002] Shallow silt foundation is a special type of geological structure, widely found in rivers, lakes and coastal areas. Its high water content and low strength characteristics pose significant challenges to engineering construction. In the foundation treatment of infrastructure construction such as roads, bridges and buildings, effective drainage is crucial to improve the bearing capacity and stability of the foundation. Among them, the vacuum preloading method is the most widely used treatment method. The vacuum preloading method is to lay a sealing membrane on the surface of the foundation, use a special vacuum equipment to draw a vacuum, lay drainage boards and drainage channels on the foundation, and continuously pump out air and water to form a negative pressure in the sand cushion layer under the sealing membrane and the vertical drainage channel in the soil, accelerate the discharge of pore water, thereby causing the foundation to settle, the foundation soil to gradually consolidate, and improve the foundation strength.

[0003] When dealing with the drainage of shallow mud foundations, existing drainage devices generally use fixed-length drainage pipes. The drainage position is fixed and cannot be adjusted according to the position change of the mud layer. Reinstalling long pipes is cumbersome, and as the drainage operation continues, as the water in the mud layer is extracted, the geological structure will also change. These changes are often accompanied by the redistribution of soil stress. The installed pipes are easily deformed by pressure, resulting in pipe damage and deformation, which affects the drainage effect. Summary of the invention

[0004] The object of the present invention is to provide a shallow mud foundation drainage device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A shallow mud foundation drainage device, comprising A laying frame, wherein a number of water suction pipes are arranged inside the laying frame, a mesh screen and a drainage board are arranged in sequence from top to bottom on the inner side of the laying frame and located outside the water suction pipe, a drainage pipe is arranged at the top of the water suction pipe, and a vacuum device is arranged at one end of the drainage pipe, and the vacuum device is used to extract moisture from the silt foundation; The water suction pipe includes a movable pipe, a plurality of positioning pipes are sleeved on the outer side of the movable pipe, and the positioning pipes are respectively fixedly connected to the surface of the drain pipe, the mesh screen and the drain board, a plurality of water suction ports are opened on the outer side of the movable pipe, and a filter screen for filtering silt is provided at each of the water suction ports, an installation groove is opened at the connection between the outer side of the movable pipe and the positioning pipe, and a supporting mechanism is installed in the inner cavity of the installation groove, and the supporting mechanism is used to support the movable pipe.

[0006] Preferably, the support mechanism comprises a mounting seat, the inner cavity of the mounting seat is provided with a support frame, the inner cavity of the mounting seat is located at one end of the support frame and a push plate is provided, and one end of the push plate is provided with a spring.

[0007] Preferably, the inner cavity of the mounting seat is also provided with a limiting ring, the inner wall of the limiting ring is provided with a plurality of clamping blocks, the outer side of the push plate is provided with clamping grooves the same number as the clamping blocks and adapted to each other, one side of the limiting ring is also provided with mutually meshing racks, one side of the rack is provided with a second magnetic ring, the interior of the positioning tube is provided with a first magnetic ring, and the corresponding surfaces of the second magnetic ring and the first magnetic ring attract each other.

[0008] Preferably, a pressing plate is further provided on the top of the support frame, and the top of the pressing plate is configured as an inclined surface.

[0009] Preferably, the inner wall of the positioning tube is provided with spiral patterns, the outer side of the movable tube is provided with spiral grooves matching the spiral patterns on the inner wall of the positioning tube, and the top of the movable tube is connected with a regulating valve.

[0010] Preferably, a dredging seat is respectively provided inside the mesh screen and the drain plate, a cleaning groove is provided on the top of the dredging seat, the suction pipe passes through the cleaning groove, a dredging mechanism for cleaning the filter screen is provided on the inner wall of the cleaning groove, and the dredging mechanism includes a driven gear, at least three displacement grooves are provided on the surface of the driven gear, a linkage frame is provided on the inner wall of the displacement groove, a dredging plate is provided at one end of the linkage frame, and a driving gear which is rotated by a servo motor is also provided on one side of the driven gear, and the outer edge of the driving gear is meshed with the outer edge of the driven gear.

[0011] Preferably, an anti-slip block is provided at the bottom end of the linkage frame, and the diameter of the anti-slip block is larger than the widest distance inside the displacement groove.

[0012] Preferably, a plurality of pressure sensors are provided on the inner wall of the drain pipe, and the pressure value inside the drain pipe can be monitored in real time through the pressure sensors.

[0013] Preferably, the inner cavity of the water suction pipe adopts a gradual diameter design, specifically, expansion pipes are provided at the connection between the water suction pipe and the drain pipe and at the bend of the water suction pipe, and the diameter of the expansion pipe is larger than the diameter of the water suction pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the movable pipe is controlled to rotate by a regulating valve. Due to the threaded cooperation between the movable pipe and the positioning pipe, the overall length of the water suction pipe is adjusted, so that the position of the water suction port of the pipeline can be adjusted according to the actual depth of the silt layer, ensuring accurate and efficient drainage operations and significantly improving the foundation treatment effect; 2. In the present invention, by providing a support mechanism, when the overall length of the suction pipe is extended, the support mechanism can automatically pop out the support structure to stabilize and support the pipe, effectively resist the pressure caused by geological changes, prevent the pipe from deformation and damage, and ensure the continuity and stability of the drainage operation; 3. In the present invention, the pressure change in the pipeline is detected in real time by a pressure sensor, and the filter blockage condition is judged according to the pressure change. Once a blockage signal is detected, the sewage discharge device is immediately started to automatically clean the filter to ensure that the drainage channel is unobstructed, thereby improving the automation level and operation efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the overall structure of the middle water suction pipe; Figure 3 For the present invention Figure 2 Explosion diagram of the overall structure of the middle water suction pipe; Figure 4 For the present invention Figure 3 Schematic diagram of the overall structure of the middle support mechanism; Figure 5 For the present invention Figure 1 Schematic diagram of the overall structure of the middle dredging seat; Figure 6 For the present invention Figure 5 Schematic diagram of the overall structure of the central dredging mechanism; Figure 7 For the present invention Figure 6 Schematic diagram of the finishing structure of the driven gear. In the figure: 1. laying frame; 11. drainage pipe; 12. pressure sensor; 13. expansion pipe; 14. regulating valve; 2. water suction pipe; 21. movable pipe; 22. positioning pipe; 221. first magnetic circle; 23. filter screen; 24. mounting groove; 25. supporting mechanism; 251. mounting seat; 252. supporting frame; 253. push plate; 2531. slot; 254. limiting ring; 2541. block; 255. rack; 256. second magnetic circle; 257. spring; 258. pressing plate; 3. mesh screen; 4. drainage board; 5. silt removal seat; 51. cleaning groove; 52. servo motor; 521. driving gear; 53. dredging mechanism; 531. driven gear; 532. displacement groove; 533. linkage frame; 534. silt removal plate; 535. anti-drop block; 6. vacuum equipment. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] See also Figure 1-7 , the present invention provides a technical solution: A shallow mud foundation drainage device, comprising A laying frame 1, wherein a plurality of water suction pipes 2 are arranged inside the laying frame 1, a mesh screen 3 and a drainage board 4 are arranged in sequence from top to bottom on the inner side of the laying frame 1 and located outside the water suction pipe 2, a drainage pipe 11 is arranged at the top of the water suction pipe 2, and a vacuum device 6 is arranged at one end of the drainage pipe 11, and the vacuum device 6 is used to extract moisture from the silt foundation; The water suction pipe 2 includes a movable pipe 21, and a plurality of positioning pipes 22 are sleeved on the outer side of the movable pipe 21, and the positioning pipes 22 are respectively fixedly connected to the surfaces of the drain pipe 11, the mesh screen 3, and the drain board 4. A plurality of water suction ports are opened on the outer side of the movable pipe 21, and a filter screen 23 for filtering sludge is provided at each water suction port. An installation groove 24 is opened at the connection between the outer side of the movable pipe 21 and the positioning pipe 22, and a support mechanism 25 is installed in the inner cavity of the installation groove 24, and the support mechanism 25 is used to support the movable pipe 21.

[0019] In this embodiment, please refer to Figure 3-4 The support mechanism 25 includes a mounting seat 251, and a support frame 252 is provided in the inner cavity of the mounting seat 251. A push plate 253 is provided at one end of the inner cavity of the mounting seat 251 located at the support frame 252, and a spring 257 is provided at one end of the push plate 253. In this embodiment, when the movable tube 21 moves downward, the support mechanism 25 leaves the inner cavity of the positioning tube 22. At this time, the support frame 252 is no longer blocked by the inner wall of the positioning tube 22, so that the spring 257 loses pressure and pushes the push plate 253 to move forward. Since the positioning tube 22 has a mesh screen 3 and a drainage board 4 to provide support force, when the movable tube 21 moves downward, the pressure on the pipeline increases due to the lengthening, and the movable tube 21 lacks support, and the support frame 252 is pushed forward by the push plate 253, so that the support frame 252 contacts the inner wall of the foundation, and the support force is provided by the spring 257 to prevent the soil stress from causing damage to the movable tube 21.

[0020] In this embodiment, please refer to Figure 4The inner cavity of the mounting seat 251 is also provided with a limiting ring 254, and the inner wall of the limiting ring 254 is provided with a plurality of blocks 2541. The outer side of the push plate 253 is provided with a card slot 2531 of the same number as the blocks 2541 and adapted to each other. A rack 255 meshing with each other is also provided on one side of the limiting ring 254, and a second magnetic ring 256 is provided on one side of the rack 255. A first magnetic ring 221 is provided inside the positioning tube 22, and the second magnetic ring 256 and the corresponding surface of the first magnetic ring 221 attract each other. In this embodiment, when the movable tube 21 moves downward, due to the mutual attraction between the first magnetic ring 221 and the second magnetic ring 256, before the supporting mechanism 25 completely leaves the inner cavity of the positioning tube 22, the second magnetic ring 256 is on the first magnetic ring 221. Under the action of suction, the position moves upward relative to the limiting ring 254, so that in the process of the support mechanism 25 moving downward, the limiting ring 254 is driven to rotate by the rack 255, and the position of the block 2541 is changed by the rotation of the limiting ring 254. When the position of the block 2541 corresponds to the slot 2531, under the elastic force of the spring 257, the push plate 253 passes through the limiting ring 254 and pushes the support frame 252 out. At the same time, as the limiting ring 254 continues to rotate, the position of the block 2541 and the slot 2531 no longer correspond, and the push plate 253 is locked in front of the limiting ring 254, locking the position of the support frame 252 to prevent the support frame 252 from moving backward due to the foundation pressure, thereby ensuring that the support frame 252 provides sufficient supporting force.

[0021] In this embodiment, please refer to Figure 4 A pressure plate 258 is also provided on the top of the support frame 252, and the top of the pressure plate 258 is set as an inclined surface. In this embodiment, when the movable tube 21 is controlled to move upward, the pressure plate 258 contacts the bottom outer edge of the positioning tube 22. Since the pressure plate 258 is set as an inclined surface, a backward thrust is generated on the support frame 252, causing the support frame 252 to move backward, and as the movable tube 21 moves upward, the limiting ring 254 is rotated again through the mutual attraction between the first magnetic circle 221 and the second magnetic circle 256. When the block 2541 and the slot 2531 are adapted to each other again, under the thrust of the pressure plate 258, the push plate 253 passes through the limiting ring 254 and is located behind it, and the support frame 252 is locked in the inner cavity of the mounting seat 251 again.

[0022] In this embodiment, please refer to Figure 3 The inner wall of the positioning tube 22 is provided with a spiral pattern, the outer side of the movable tube 21 is provided with a spiral groove matched with the spiral pattern of the inner wall of the positioning tube 22, and the top of the movable tube 21 is connected to the regulating valve 14. In this embodiment, the rotation of the regulating valve 14 is controlled by an external force, and by controlling the rotation direction of the regulating valve 14, the movable tube 21 can be controlled to move upward or downward along the inner wall of the positioning tube 22, thereby adjusting the position of the water suction port on the outer side of the movable tube 21.

[0023] In this embodiment, please refer to Figure 6-7 , the mesh screen 3 and the drain plate 4 are respectively provided with a dredging seat 5, the top of the dredging seat 5 is provided with a cleaning groove 51, the suction pipe 2 passes through the cleaning groove 51, and the inner wall of the cleaning groove 51 is provided with a dredging mechanism 53 for cleaning the filter screen 23, and the dredging mechanism 53 includes a driven gear 531, and the surface of the driven gear 531 is provided with at least three displacement grooves 532, and the inner wall of the displacement groove 532 is provided with a linkage frame 533, and one end of the linkage frame 533 is provided with a dredging plate 534, and one side of the driven gear 531 is also provided with a driving gear 521 that is powered by a servo motor 52 to rotate, and the outer edge of the driving gear 521 is meshed with the outer edge of the driven gear 531. In this embodiment, the servo motor 5 Power is given to control the driving gear 521 to rotate, and the driven gear 531 is driven to rotate through the driving gear 521. When the driven gear 531 rotates, the position of the displacement groove 532 moves, and a thrust is generated on the linkage frame 533, so that the linkage frame 533 moves along the inner wall of the displacement groove 532. By controlling the rotation direction of the driven gear 531, when the linkage frame 533 moves along the driving gear 521 toward the center direction of the driven gear 531, the plurality of silt-clearing plates 534 are brought closer to each other at the same time. At this time, the position of the movable pipe 21 is adjusted to move the filter screen 23 to the inner side of the silt-clearing plate 534, so that the silt-clearing spikes provided on the inner side of the silt-clearing plate 534 pass through the filter holes of the filter screen 23 to clean the filter holes of the filter screen 23.

[0024] In this embodiment, please refer to Figure 6 An anti-slip block 535 is provided at the bottom end of the linkage frame 533, and the diameter of the anti-slip block 535 is larger than the widest distance inside the displacement groove 532. In this embodiment, the anti-slip block 535 is provided to prevent the linkage frame 533 from escaping from the inner wall of the displacement groove 532 when the linkage frame 533 moves along the inner wall of the displacement groove 532.

[0025] In this embodiment, please refer to Figure 1 A plurality of pressure sensors 12 are provided on the inner wall of the drain pipe 11, and the pressure value inside the drain pipe 11 can be monitored in real time through the pressure sensor 12. In this embodiment, the pressure sensor 12 is provided to detect the pressure value inside the drain pipe 11 in real time, and the vacuum equipment 6 absorbs moisture in the foundation mud, while the drain pipe 11 is continuously in a negative pressure state. When the movable pipe 21 is blocked and affects the absorption of moisture, the negative pressure in the drain pipe 11 increases rapidly. At this time, the servo motor 52 is started through the control system to clean the filter holes of the filter screen 23.

[0026] In this embodiment, please refer to Figure 1The inner cavity of the suction pipe 2 adopts a gradual diameter design. Specifically, an expansion pipe 13 is provided at the connection between the suction pipe 2 and the drain pipe 11 and at the turning point of the suction pipe 2. The diameter of the expansion pipe 13 is larger than the diameter of the suction pipe 2. In this embodiment, the diameter of the suction pipe 2 is increased at the intersection or turning point, which effectively slows down the water flow speed, thereby reducing the direct impact of the water flow on the pipe wall and the intersection, extending the service life of the pipe, and at the same time, preventing silt from being easily blocked at the bending point of the suction pipe 2.

[0027] Working principle of the present invention: Step 1, rotate the regulating valve 14 by external force, and drive the movable tube 21 to rotate by the rotation of the regulating valve 14, and make the movable tube 21 rotate along the inner wall of the positioning tube 22. Since the outer side of the movable tube 21 is provided with a thread, and the inner wall of the positioning tube 22 is provided with a thread groove which is adapted to the outer thread of the movable tube 21, the movable tube 21 can be moved downward along the inner wall of the positioning tube 22 by controlling the rotation direction. Since the overall length of the water suction pipe 2 is lengthened and the position of the movable tube 21 is moved, the water pumping position of the water suction pipe 2 is adjusted. At the same time, as the movable tube 21 moves downward, the supporting mechanism 25 leaves the inner wall of the positioning tube 22, and since the second magnetic ring 256 is aligned with the first magnetic ring 221 provided on the inner wall of the positioning tube 22, the movable tube 21 is moved downward. The second magnetic ring 256 attracts each other, so when the movable tube 21 moves downward, the second magnetic ring 256 is attracted by the first magnetic ring 221 and its position is kept fixed, so that the position of the rack 255 is fixed. Since the rack 255 and the limiting ring 254 are meshed with each other, when the movable tube 21 moves downward, the limiting ring 254 rotates. When the limiting ring 254 rotates, the position of the clamping block 2541 changes. When it corresponds to the clamping groove 2531 provided on the outer side of the push plate 253, the spring 257 loses pressure and rebounds. Therefore, under the elastic force of the spring 257, the push plate 253 passes through the limiting ring 254, and the support frame 252 is pushed forward. Under the elastic force of the spring 257, the support frame 252 is fixed in the underground pipe wall where the movable tube 21 is installed. Step 2: A filter screen 23 is provided at the water suction port of the movable pipe 21. The filter screen 23 can block pollutants with larger particle sizes from entering the inner cavity of the movable pipe 21, so as to prevent the water suction pipe 2 and the drain pipe 11 from being blocked by pollutants when vacuum pumping is performed. At the same time, the pressure value inside the drain pipe 11 is detected in real time by the pressure sensor 12. When the filter holes of the filter screen 23 are blocked and the vacuum equipment 6 is still continuously performing the pumping operation, the negative pressure generated inside the drain pipe 11 is higher than the standard value, and it is determined that a more serious blockage has occurred at the filter screen 23. At this time, power is given by the servo motor 52 to control the rotation of the driving gear 521. Since the outer edge of the driving gear 521 is meshed with the outer edge of the driven gear 531, the rotation of the driving gear 521 drives the driven gear 531 to rotate. Since a plurality of displacement grooves 532 are provided on the surface of the driven gear 531, when the driven gear 531 rotates The position of the displacement groove 532 changes. As the position of the displacement groove 532 changes, the linkage frame 533 moves along the inner wall of the displacement groove 532, and by controlling the rotation direction of the driven gear 531, the linkage frame 533 can be moved along the inner wall of the displacement groove 532 toward the outside of the driven gear 531. By reversing the driven gear 531, the linkage frame 533 can be controlled to move along the inner wall of the displacement groove 532 toward the center direction of the driven gear 531, so that by controlling the rotation of the driven gear 531, the linkage frame 533 can drive the silt-clearing plate 534 to move closer to the movable pipe 21. When the filter screen 23 is moved to the inner side of the silt-clearing plate 534, multiple silt-clearing plates 534 simultaneously move closer to the filter screen 23, so that the multiple silt-clearing thorns provided on the surface of the silt-clearing plate 534 penetrate into the filter holes of the filter screen 23, remove the pollutants in the filter holes, and enable the filter screen 23 to maintain the filtering effect while avoiding blockage.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shallow mud foundation drainage device, characterized in that: include A laying frame (1), wherein a plurality of water suction pipes (2) are arranged inside the laying frame (1), a mesh screen (3) and a drainage board (4) are arranged in order from top to bottom on the inner side of the laying frame (1) and outside the water suction pipe (2), a drainage pipe (11) is arranged at the top of the water suction pipe (2), and a vacuum device (6) is arranged at one end of the drainage pipe (11), and the vacuum device (6) is used to extract moisture from the silt foundation; The water suction pipe (2) comprises a movable pipe (21), a plurality of positioning pipes (22) are sleeved on the outer side of the movable pipe (21), and the positioning pipes (22) are respectively fixedly connected to the surface of the drainage pipe (11), the mesh screen (3), and the drainage board (4); a plurality of water suction ports are provided on the outer side of the movable pipe (21), and a filter screen (23) for filtering sludge is provided at each of the water suction ports; a mounting groove (24) is provided at the connection between the outer side of the movable pipe (21) and the positioning pipe (22), and a support mechanism (25) is installed in the inner cavity of the mounting groove (24), and the support mechanism (25) is used to support the movable pipe (21).

2. A shallow mud foundation drainage device according to claim 1, characterized in that: The support mechanism (25) comprises a mounting seat (251), the inner cavity of the mounting seat (251) being provided with a support frame (252), the inner cavity of the mounting seat (251) being provided with a push plate (253) at one end of the support frame (252), and one end of the push plate (253) being provided with a spring (257).

3. A shallow mud foundation drainage device according to claim 2, characterized in that: The inner cavity of the mounting seat (251) is also provided with a limiting ring (254), the inner wall of the limiting ring (254) is provided with a plurality of clamping blocks (2541), the outer side of the push plate (253) is provided with clamping grooves (2531) the same number as the clamping blocks (2541) and mutually adapted, one side of the limiting ring (254) is also provided with a mutually meshing rack (255), one side of the rack (255) is provided with a second magnetic ring (256), the interior of the positioning tube (22) is provided with a first magnetic ring (221), and the corresponding surfaces of the second magnetic ring (256) and the first magnetic ring (221) attract each other.

4. A shallow mud foundation drainage device according to claim 3, characterized in that: A pressing plate (258) is also provided on the top of the support frame (252), and the top of the pressing plate (258) is configured as an inclined surface.

5. A shallow mud foundation drainage device according to claim 1, characterized in that: The inner wall of the positioning tube (22) is provided with a spiral pattern, the outer side of the movable tube (21) is provided with a spiral groove that matches the spiral pattern of the inner wall of the positioning tube (22), and the top of the movable tube (21) is connected to a regulating valve (14).

6. A shallow mud foundation drainage device according to claim 1, characterized in that: A dredging seat (5) is provided inside the mesh screen (3) and the drainage plate (4), respectively. A cleaning groove (51) is provided on the top of the dredging seat (5). The water suction pipe (2) passes through the cleaning groove (51). A dredging mechanism (53) for cleaning the filter screen (23) is provided on the inner wall of the cleaning groove (51). The dredging mechanism (53) comprises a driven gear (531). At least three displacement grooves (532) are provided on the surface of the driven gear (531). A linkage frame (533) is provided on the inner wall of the displacement groove (532). A dredging plate (534) is provided at one end of the linkage frame (533). A driving gear (521) is provided on one side of the driven gear (531) and is rotated by power provided by a servo motor (52). The outer edge of the driving gear (521) meshes with the outer edge of the driven gear (531).

7. A shallow mud foundation drainage device according to claim 6, characterized in that: An anti-slip block (535) is provided at the bottom end of the linkage frame (533), and the diameter of the anti-slip block (535) is greater than the widest distance inside the displacement groove (532).

8. A shallow mud foundation drainage device according to claim 1, characterized in that: The inner wall of the drainage pipe (11) is provided with a plurality of pressure sensors (12), and the pressure value inside the drainage pipe (11) can be monitored in real time via the pressure sensors (12).

9. A shallow mud foundation drainage device according to claim 1, characterized in that: The inner cavity of the water suction pipe (2) adopts a gradually changing pipe diameter design, specifically, an expansion pipe (13) is provided at the connection between the water suction pipe (2) and the drainage pipe (11) and at the turning point of the water suction pipe (2), and the pipe diameter of the expansion pipe (13) is larger than the pipe diameter of the water suction pipe (2).

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