Anti-seepage plugging structure of foundation pit dewatering well

Abstract

The utility model provides an anti-seepage plugging structure of a foundation pit dewatering well, which belongs to the field of anti-seepage plugging structures of dewatering wells and comprises a well casing, the well casing is hollow, an annular plate is sleeved on the outer side wall of the well casing, the annular plate is made of stainless steel, and a water seepage pipe is fixedly connected to the bottom of the well casing and comprises a settling section and a water seepage section. The bottom of the water seepage pipe is sealed, a water stop plate is welded to the top of the well casing and seals the top of the well casing, a plurality of fixing grooves are formed in the inner side wall of the well casing, a water retaining ring is arranged on the inner side of the well casing, the water retaining ring is annularly arranged, and a sealing layer is arranged between the water retaining ring and the well casing. The sealing layer is fixedly connected with the water retaining ring, the bottom of the water retaining ring is fixedly connected with a wall cleaning device, the wall cleaning device is attached to the inner side wall of the water seepage section, and a pushing assembly is arranged on the inner side wall of the well casing.

Description

Technical Field

[0001] This utility model relates to the field of seepage prevention and sealing structure for dewatering wells, and more specifically, to a seepage prevention and sealing structure for a foundation pit dewatering well. Background Technology

[0002] Dewatering wells for foundation pits are temporary facilities installed in construction projects, especially when building basements or other underground structures, to lower the groundwater level and ensure construction is carried out under dry conditions. Their main function is to control groundwater through pumping, preventing water accumulation in the foundation pit and ensuring construction safety and quality.

[0003] During the sealing of dewatering wells, the problem of groundwater continuously seeping into the well is often encountered. This is mainly due to the higher water pressure in the aquifer outside the well compared to the pressure inside. Even during the sealing phase, groundwater continues to seep into the well through tiny gaps between the filter pipe and the well wall. This continuous seepage not only increases the difficulty of construction but can also severely affect the setting effect of the concrete inside the well. Specifically, the continuously flowing groundwater dilutes the concrete mixture, altering its water-cement ratio, thereby reducing the strength and durability of the concrete. In addition, the water flow may carry away some fine particles and cement paste, leading to porosity and inhomogeneity in the concrete structure, further weakening its overall performance.

[0004] How to invent a seepage-proof sealing structure for foundation pit dewatering wells to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a seepage prevention and sealing structure for foundation pit dewatering wells, aiming to improve the problems mentioned in the background.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a seepage prevention and sealing structure for a foundation pit dewatering well, including a well pipe, which is hollow. An annular plate, made of stainless steel, is fitted onto the outer wall of the well pipe. A seepage pipe is fixedly connected to the bottom of the well pipe, comprising a sedimentation section and a seepage section, with the seepage section located at the bottom of the sedimentation section. The bottom of the seepage pipe is sealed. A water-stop plate is welded to the top of the well pipe, sealing the top of the well pipe. Multiple fixing grooves are provided on the inner wall of the well pipe. A water-blocking ring, annular in shape, is provided on the inner side of the well pipe. A sealing layer is provided between the water-blocking ring and the well pipe, and the sealing layer is fixedly connected to the water-blocking ring. A wall cleaner is fixedly connected to the bottom of the water-blocking ring, fitting snugly against the inner wall of the seepage section. A pushing component is provided on the inner wall of the well pipe.

[0008] Preferably, the outer wall of the seepage section is provided with a plurality of seepage holes, which are evenly distributed in a circle on the outer wall of the seepage section.

[0009] Preferably, the inner wall of the well pipe is provided with multiple stabilizing grooves, the stabilizing grooves extend to the bottom end of the seepage pipe, and the outer wall of the water-blocking ring is fixedly connected with multiple protrusions, the protrusions being slidably arranged inside the stabilizing grooves.

[0010] Preferably, the bottom end of the wall cleaner is set at an acute angle, and the sealing layer is made of rubber.

[0011] Preferably, the pushing assembly includes multiple sets of stabilizing sleeves fixedly connected to the inner wall of the well pipe, and a thrust rod is movably disposed on each of the multiple sets of stabilizing sleeves. The thrust rod includes multiple empty pipe sections and screw sections. Multiple threaded sleeves are fixedly connected to the inner wall of the well pipe, and the threaded sleeves are engaged with the screw sections. Multiple push platforms are fixedly connected to the inner wall of the water-blocking ring.

[0012] Preferably, a connecting rod is provided between the plurality of empty pipe sections, and cylindrical pins are rotatably connected to both ends of the connecting rods, with the cylindrical pins rotatably connected to the ends of the empty pipe sections.

[0013] Preferably, the pusher is located directly below the screw section, and a slot is provided on the top of the topmost empty tube section.

[0014] The beneficial effects of this utility model are as follows: by rotating multiple thrust rods in the same direction through the slot at the top of the empty pipe section, the water-blocking ring and sealing layer move downward, so that the sealing layer blocks multiple seepage holes and prevents water from continuing to enter the dewatering well. At the same time, the water-blocking ring also drives the wall cleaner to move downward, removing clay, stones and other particles accumulated on the inner wall of the seepage section, preventing impurities between the sealing layer and the seepage section from affecting the sealing effect, and improving the sealing performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a seepage prevention and sealing structure for a foundation pit dewatering well provided by an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the location of the stabilizing trench of the seepage prevention and sealing structure of a foundation pit dewatering well provided by an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of a well pipe for preventing seepage and sealing a foundation pit dewatering well, provided by an embodiment of this utility model.

[0019] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0020] Figure 5 yes Figure 3 Enlarged view of point A in the middle;

[0021] Figure 6 yes Figure 3 Enlarged view of point C in the middle.

[0022] In the diagram: 1. Well casing; 2. Annular plate; 3. Sedimentation section; 4. Seepage section; 5. Waterstop plate; 6. Fixing groove; 7. Water-retaining ring; 8. Stabilizing groove; 9. Threaded sleeve; 10. Empty pipe section; 11. Screw section; 12. Pushing platform; 13. Sealing layer; 14. Wall cleaner; 15. Cylindrical pin; 16. Connecting rod; 17. Seepage hole; 18. Stabilizing sleeve. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Example, refer to Figures 1-6A seepage-proof sealing structure for a foundation pit dewatering well includes a well pipe 1, which is hollow. An annular plate 2, made of stainless steel, is fitted onto the outer wall of the well pipe 1. A seepage pipe is fixedly connected to the bottom of the well pipe 1. The seepage pipe includes a sedimentation section 3 and a seepage section 4, with the seepage section 4 located at the bottom of the sedimentation section 3. The bottom of the seepage pipe is sealed. A water-stop plate 5 is welded to the top of the well pipe 1, sealing the top of the well pipe 1. The inner wall of the well pipe 1 is... There are multiple fixed grooves 6. A water-blocking ring 7 is provided on the inner side of the well pipe 1. The water-blocking ring 7 is arranged in a ring shape. A sealing layer 13 is provided between the water-blocking ring 7 and the well pipe 1. The sealing layer 13 is fixedly connected to the water-blocking ring 7. A wall cleaner 14 is fixedly connected to the bottom of the water-blocking ring 7. The wall cleaner 14 is fitted against the inner wall of the seepage section 4. A pushing component is provided on the inner wall of the well pipe 1. Multiple seepage holes 17 are opened on the outer wall of the seepage section 4. The well casing 1 has multiple stabilizing grooves 8 evenly distributed around its circumference. These grooves extend to the bottom of the seepage pipe. Multiple protruding strips are fixedly connected to the outer wall of the water-blocking ring 7, sliding within the stabilizing grooves 8. The bottom of the wall cleaner 14 is angled. The sealing layer 13 is made of rubber. The pushing assembly includes multiple sets of stabilizing sleeves 18 fixedly connected to the inner wall of the well casing 1. Thrust rods are movably mounted on each set of stabilizing sleeves 18, and each thrust rod includes multiple empty pipe sections 10. The screw section 11 and the inner wall of the well pipe 1 are fixedly connected with multiple threaded sleeves 9, which are engaged with the screw section 11. The inner wall of the water baffle ring 7 is fixedly connected with multiple pushers 12. A connecting rod 16 is provided between multiple empty pipe sections 10. The two ends of the connecting rod 16 are rotatably connected with cylindrical pins 15, which are rotatably connected to the ends of the empty pipe sections 10. The pusher 12 is located directly below the screw section 11, and a slot is provided on the top of the topmost empty pipe section 10.

[0025] The working principle of this anti-seepage sealing structure for foundation pit dewatering wells is as follows: First, multiple layers of gravel are placed into the excavated dewatering well in descending order of particle size. Then, the well pipe 1 is placed into the dewatering well and fixed, completing the installation of the well pipe 1. Water in the aquifer is filtered through the multiple layers of gravel and seeps into the interior of the well pipe 1 through the seepage holes 17, preventing the seepage holes 17 from becoming clogged. When it is necessary to seal the seepage well, multiple thrust rods are rotated in the same direction through the slots at the top of the empty pipe section 10. Due to the pressure on the thrust rods... The screw section 11 engages with the threaded sleeve 9. The screw section 11 moves downward, which drives the water-blocking ring 7 and the sealing layer 13 to move downward through the pusher 12. This causes the sealing layer 13 to block multiple seepage holes 17, preventing water from continuing to enter the dewatering well. At the same time, the water-blocking ring 7 also drives the wall cleaner 14 to move downward, removing clay, stones and other particles accumulated on the inner wall of the seepage section 4, keeping the inner wall of the seepage section 4 clean, preventing impurities from getting trapped between the sealing layer 13 and the seepage section 4, affecting the sealing effect, and improving the sealing performance.

[0026] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seepage prevention and sealing structure for a foundation pit dewatering well, comprising a well pipe (1), characterized in that, The well pipe (1) is hollow, and an annular plate (2) is fitted on the outer wall of the well pipe (1). The annular plate (2) is made of stainless steel. A seepage pipe is fixedly connected to the bottom of the well pipe (1). The seepage pipe includes a sedimentation section (3) and a seepage section (4). The seepage section (4) is located at the bottom of the sedimentation section (3). The bottom of the seepage pipe is sealed. A water-stop plate (5) is welded to the top of the well pipe (1). The water-stop plate (5) seals the top of the well pipe (1). (1) The inner wall is provided with multiple fixing grooves (6), the inner side of the well pipe (1) is provided with a water baffle ring (7), the water baffle ring (7) is arranged in a ring shape, a sealing layer (13) is provided between the water baffle ring (7) and the well pipe (1), the sealing layer (13) is fixedly connected to the water baffle ring (7), a wall cleaner (14) is fixedly connected to the bottom of the water baffle ring (7), the wall cleaner (14) is fitted to the inner wall of the seepage section (4), and a pushing component is provided on the inner wall of the well pipe (1).

2. The seepage prevention and sealing structure for a foundation pit dewatering well according to claim 1, characterized in that, The outer wall of the seepage section (4) is provided with a plurality of seepage holes (17), which are evenly distributed in a circle on the outer wall of the seepage section (4).

3. The seepage prevention and sealing structure for a foundation pit dewatering well according to claim 1, characterized in that, The inner wall of the well pipe (1) is provided with multiple stabilizing grooves (8), which extend to the bottom of the seepage pipe. The outer wall of the water-blocking ring (7) is fixedly connected with multiple protrusions, which slide inside the stabilizing grooves (8).

4. The seepage prevention and sealing structure for a foundation pit dewatering well according to claim 1, characterized in that, The bottom of the wall cleaner (14) is set at an acute angle, and the sealing layer (13) is made of rubber.

5. The seepage prevention and sealing structure for a foundation pit dewatering well according to claim 1, characterized in that, The pushing assembly includes multiple sets of stabilizing sleeves (18) fixedly connected to the inner wall of the well pipe (1). Thrust rods are movably arranged on the multiple sets of stabilizing sleeves (18). The thrust rods include multiple empty pipe sections (10) and screw sections (11). Multiple threaded sleeves (9) are fixedly connected to the inner wall of the well pipe (1). The threaded sleeves (9) are engaged with the screw sections (11). Multiple push platforms (12) are fixedly connected to the inner wall of the water baffle ring (7).

6. The seepage prevention and sealing structure for a foundation pit dewatering well according to claim 5, characterized in that, A connecting rod (16) is provided between multiple empty pipe sections (10), and a cylindrical pin (15) is rotatably connected to both ends of the connecting rod (16), and the cylindrical pin (15) is rotatably connected to the end of the empty pipe section (10).

7. The seepage prevention and sealing structure for a foundation pit dewatering well according to claim 5, characterized in that, The pusher (12) is located directly below the screw section (11), and a slot is provided on the top of the empty tube section (10) at the very top.

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