Sealing structure of the dewatering well in the foundation slab

Abstract

The present invention belongs to the technical field of drainage well sealing, and discloses a drainage well sealing structure in a foundation bottom plate, including a steel cylinder adjusting assembly, a concrete bottom plate is arranged on the outer side of the steel cylinder adjusting assembly, the steel cylinder adjusting assembly includes a lower steel cylinder inserted into the concrete bottom plate, an upper steel cylinder is sleeved inside the lower steel cylinder, and the bottom end of the steel cylinder adjusting assembly also includes a bottom water stop assembly; the bottom water stop assembly includes a fixed water stop plate 1 welded to the bottom of the concrete bottom plate, a screw rod 2 structure in the bottom water stop assembly can directly pass through all structural layers of the bottom water stop assembly, and pull it to be positioned on the outer side of the screw rod 2 to complete the traction limiting, while maintaining a close contact state, improving the close connection between the bottom water stop assembly and the foundation cushion layer, reducing subsequent water leakage caused by insufficient water stop sealing, and maintaining the normal progress of the bottom sealing treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of drainage well sealing, and in particular relates to a drainage well sealing structure in a foundation bottom plate. Background Art

[0002] The sealing structure of the precipitation well in the foundation slab is an important part of the construction project. Its purpose is to ensure the ideal sealing effect, prevent leakage, and facilitate construction. Sealing the well does not change the stress and use function of the original structure. The steel bars cut off by the sealing casing must be designed and reinforced to apply stable and lasting pressure and constraints to the outside of the precipitation well, gradually reduce the water pressure, and keep the groundwater level at the required position. At present, the most efficient and most commonly used well sealing method is to use prefabricated waterproof steel casing for rapid sealing. However, the installation convenience of the foundation cushion layer and the functional layer above is poor, and layered installation is required.

[0003] At the same time, the drainage well sealing structure and its construction method with application number 202310476702.6, ", comprises a concrete bottom plate and a drainage well pipe arranged through the concrete bottom plate, wherein a casing is buried in the concrete bottom plate and is sleeved on the drainage well pipe, and the upper end height is lower than the upper surface height of the concrete bottom plate, the upper surface of the concrete bottom plate is provided with a groove including the upper end of the casing, and the casing is sleeved with a water stop ring buried in the concrete bottom plate; the inner cavity of the casing forms a plugging cavity for plugging the drainage well pipe, and the plugging cavity is provided with a well pipe filled with micro-expansion concrete , a cover plate which is sealed with the casing is provided at the upper end of the casing, and the groove is filled with micro-expansive concrete for sealing the bottom plate pipe well which covers the cover plate"; During the use of the above-mentioned precipitation well sealing structure, since the bottom foundation cushion layer is not easy to install inside the foundation bottom plate, it is only tightened and fixed by multiple screws, which requires construction workers to tighten repeatedly. However, the setting progress of the functional layer structure will slow down the subsequent progress of the sealing structure inside the precipitation well, and it is also easy for multiple functional layer structures to be tilted when connected to each other, resulting in a general water-stopping effect, affecting subsequent construction operations.

[0004] Therefore, in order to solve the above problems, a sealing structure of the drainage well in the foundation slab is proposed. Summary of the invention

[0005] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a sealing structure for a drainage well in the foundation slab, which has the advantage of directly positioning multiple structural layers with long screws for use, thereby reinforcing the stability of the overall structure and avoiding the formation of gaps between the structural layers, which affects the water-stopping effect.

[0006] To achieve the above object, the present invention provides the following technical solution: a sealing structure for a precipitation well in a foundation bottom plate, comprising a steel cylinder adjustment assembly, a concrete bottom plate is arranged outside the steel cylinder adjustment assembly, the steel cylinder adjustment assembly comprises a lower steel cylinder inserted into the concrete bottom plate, an upper steel cylinder is sleeved inside the lower steel cylinder, and the bottom end of the steel cylinder adjustment assembly further comprises a bottom water stop assembly;

[0007] The bottom water stop assembly includes a fixed water stop plate 1 welded to the bottom of the concrete bottom plate, a movable ring steel plate is fitted on the bottom end of the fixed water stop plate 1, a rubber gasket 1 is fitted on the bottom end of the movable ring steel plate, a waterproof layer is fitted on the bottom end of the rubber gasket 1, a rubber gasket 2 is fitted on the bottom end of the waterproof layer, a basic cushion layer cast with the concrete bottom plate is fitted on the bottom end of the rubber gasket 2, a support ring is suspended inside the top end of the basic cushion layer, a universal seat is fixedly provided on the top end of the support ring, a screw 2 that penetrates the bottom water stop assembly is rotatably provided inside the top end of the universal seat, and a middle water stop assembly is also provided at the middle position inside the lower steel cylinder;

[0008] The middle water stop assembly includes two fixed water stop plates attached to the inner wall of the lower steel cylinder.

[0009] Preferably, casting grooves are provided on both sides of the bottom end of the foundation cushion layer, and the inside of the casting groove is arranged as an inclined landslide.

[0010] Preferably, a rotating shaft plugged into the base cushion layer is fixedly provided on the outer side of the support ring, and a spring 1 fixed to the base cushion layer is fixedly provided on the bottom end of the support ring.

[0011] Preferably, the outer spiral of the second screw rod is provided with a second fastening screw sleeve whose top is in contact with the fixed water stop plate.

[0012] Preferably, a welding column that fits the inner wall of the lower steel cylinder is fixedly provided on the top end of the fixed water stop plate, and the welding column adopts an iron welding rod.

[0013] Preferably, UEA concrete is poured from 100 mm below the foundation cushion layer to the top of the upper steel cylinder, and the UEA concrete is UEA expansive concrete with a strength grade of C45.

[0014] Preferably, a screw rod 1 is fixedly provided at the edge position where the lower steel cylinder and the upper steel cylinder are sleeved, and a fastening screw sleeve 1 that passes through the edge position of the upper steel cylinder is spirally provided on the outer side of the screw rod 1.

[0015] Preferably, an annular groove is formed inside the lower steel cylinder and the upper steel cylinder, the fixed water stop plate 2 is located inside the annular groove, a cross groove is opened at the bottom end of the fixed water stop plate 2, and a plug plate located inside the annular groove is slidably arranged inside the cross groove of the fixed water stop plate 2.

[0016] Preferably, a transverse axis is provided inside the plug plate, a conical head is provided at the other end of the transverse axis, and a screw rod three which is spirally arranged with the fixed water stop plate two is fixed at the top end of the conical head.

[0017] Preferably, a spring 1 which fits with the second fixed water stop plate is sleeved on the outer side of the plug plate, and the other end of the transverse axis fits with the conical head, and a guide shaft which slides with the second fixed water stop plate is fixedly arranged on the outer side of the plug plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention can directly pass through all the structural layers in the bottom water-stop assembly through the screw rod 2 structure in the bottom water-stop assembly, pull and position it on the outside of the screw rod 2 to complete the traction limit, while maintaining a close contact state, improving the close connection between the bottom water-stop assembly and the base cushion layer, reducing subsequent water leakage caused by insufficient water-stop sealing, and maintaining the normal progress of the bottom sealing process.

[0020] 2. The present invention can continuously adjust the support ring to different positions inside the foundation cushion layer through the structural design of the support ring, guide and limit the upper functional structure layer inside the support ring, and strengthen the connection between the foundation cushion layer and the structural protection layer.

[0021] 3. The present invention controls the movement of the screw rod 3 through the plug plate structure design in the middle water stop assembly, pushes the conical head downward, and can directly clamp the popped-open plug plate structure in the annular groove gap between the lower steel cylinder and the upper steel cylinder through the transverse axis to complete rapid fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional installation structure of the lower steel cylinder of the present invention;

[0024] Figure 3 It is a schematic diagram of the installation structure of the bottom water stop assembly of the present invention;

[0025] Figure 4 It is a schematic diagram of the installation structure of the support ring of the present invention;

[0026] Figure 5 It is a schematic diagram of the installation structure of the second fastening screw sleeve of the present invention;

[0027] Figure 6 It is a schematic diagram of the installation structure of the middle water stop assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the installation structure of the plug board of the present invention.

[0029] In the figure: 1. Concrete base plate;

[0030] 2. Steel cylinder adjustment assembly; 21. Lower steel cylinder; 22. Upper steel cylinder; 23. Fastening screw sleeve 1; 24. Screw rod 1;

[0031] 3. Foundation cushion;

[0032] 4. Bottom water stop assembly; 41. Fixed water stop plate 1; 42. Movable ring steel plate; 43. Rubber gasket 1; 44. Waterproof layer; 45. Rubber gasket 2; 46. Welding column; 47. Universal seat; 48. Screw 2; 49. Fastening screw sleeve 2; 410. Support ring; 411. Spring 1; 412. Rotating shaft;

[0033] 5. Casting notch;

[0034] 6. Middle water stop assembly; 61. Fixed water stop plate 2; 62. Insert plate; 63. Horizontal axis; 64. Spring 2; 65. Conical head; 66. Screw 3; 67. Guide shaft;

[0035] 7. Annular groove.

[0036] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0039] like Figures 1 to 7 As shown, the present invention provides a sealing structure for a drainage well in a foundation bottom plate, including a steel cylinder adjustment component 2, a concrete bottom plate 1 is arranged on the outer side of the steel cylinder adjustment component 2, the steel cylinder adjustment component 2 includes a lower steel cylinder 21 inserted into the concrete bottom plate 1, an upper steel cylinder 22 is sleeved inside the lower steel cylinder 21, the lower steel cylinder 21 cooperates with the upper steel cylinder 22 structure to be sleeved and slid with each other, and the height of the steel cylinder structure can be adjusted, so that the redundant structure is sunk into the drainage well port, and no cutting operation is required, and the bottom end of the steel cylinder adjustment component 2 also includes a bottom water stop component 4;

[0040] The bottom water stop assembly 4 includes a fixed water stop plate 41 welded to the bottom of the concrete bottom plate 1, the bottom end of the fixed water stop plate 41 is fitted with a movable ring steel plate 42, the bottom end of the movable ring steel plate 42 is fitted with a rubber gasket 43, the bottom end of the rubber gasket 43 is fitted with a waterproof layer 44 for waterproofing to prevent water overflow, the bottom end of the waterproof layer 44 is fitted with a rubber gasket 2 45, the rubber gasket 1 43 and the rubber gasket 2 45 are clamped to both sides of the waterproof layer 44 to seal it, and the bottom end of the rubber gasket 2 45 is fitted with The foundation cushion layer 3 is cast with the concrete bottom plate 1. The casting of the foundation cushion layer 3 protects the functional layer structure above. A support ring 410 is suspended inside the top of the foundation cushion layer 3. A universal seat 47 is fixedly provided at the top of the support ring 410. A screw rod 48 that penetrates the bottom water stop assembly 4 is rotatably provided inside the top of the universal seat 47. The rotatable screw rod 48 structure is adjusted inside the universal seat 47. The screw rod 48 is inserted into the functional layer of the structure. The middle position inside the lower steel cylinder 21 also includes a middle water stop assembly 6.

[0041] The middle water-stop assembly 6 includes a second fixed water-stop plate 61 attached to the inner wall of the lower steel cylinder 21 , and the second fixed water-stop plate 61 performs water-stopping in the middle.

[0042] Specifically, casting grooves 5 are opened on both sides of the bottom end of the foundation cushion layer 3, and the inside of the casting grooves 5 is set as an inclined landslide. UEA concrete is poured from 100 mm below the foundation cushion layer 3 to the top of the upper steel cylinder 22, and the UEA concrete uses UEA expansive concrete with a strength grade of C45. The gaps are filled through the casting groove 5 structure, and when pouring cement, it can be directly connected with the concrete base plate 1.

[0043] The outer side of the support ring 410 is fixedly provided with a rotating shaft 412 which is plugged into the base cushion layer 3, and the bottom end of the support ring 410 is fixedly provided with a spring 411 which is fixed to the base cushion layer 3. The spring 411 supports the support ring 410 and can cooperate with the rotating shaft 412 to provide auxiliary support to the support ring 410. The outer side of the screw rod 48 is spirally provided with a fastening screw sleeve 49 whose top is fitted with the fixed water stop plate 41, and the top of the fixed water stop plate 41 is fixedly provided with a welding column 46 which is fitted with the inner wall of the lower steel cylinder 21. The welding column 46 adopts an iron welding rod, which can directly provide welding materials for welding operations without the need to use welding rods separately for welding.

[0044] A screw 24 is fixedly provided at the edge position where the lower steel cylinder 21 and the upper steel cylinder 22 are sleeved, and a fastening screw sleeve 23 that penetrates the edge position of the upper steel cylinder 22 is spirally provided on the outer side of the screw 24. An annular groove 7 is formed inside the lower steel cylinder 21 and the upper steel cylinder 22. By rotating the fastening screw sleeve 23, it can be tightened to the outer side of the screw 24 to adjust the height of the upper steel cylinder 22. The fixed water stop plate 61 is located inside the annular groove 7. A cross groove is provided at the bottom end of the fixed water stop plate 61. The cross groove guides the inside of the plug plate 62 to keep it stably inserted into the platform of the annular groove 7 to complete the limiting. The plug plate located inside the annular groove 7 is slidably provided inside the cross groove of the fixed water stop plate 61 62, the plug plate 62 is provided with a plug plate 62 inside, and the other end of the plug plate 62 is fitted with a conical head 65, and the top of the conical head 65 is fixedly provided with a screw three 66 spirally arranged with the fixed water stop plate 61, and the conical head 65 can push the horizontal axis 63 down, and push the surrounding plug plates 62 outward, and the outer side of the plug plate 62 is sleeved with a spring two 64 fitted with the fixed water stop plate 61, and the other end of the spring two 64 is fitted with the conical head 65, and the outer side of the plug plate 62 is fixedly provided with a guide shaft 67 slidably arranged with the fixed water stop plate 61, and the guide shaft 67 structure can be pushed by the outer spring two 64 to press the plug plate 62 against the step inside the annular groove 7 for positioning.

[0045] The working principle of the technical solution provided by the present invention is as follows:

[0046] When the construction workers are sealing the dewatering well, they need to hoist the steel cylinder structure for construction. First, they should increase the dewatering intensity around the well to reduce the water level in the well pipe to be sealed to the lowest level for plugging. The specific sealing sequence and time for the final plugging should be determined according to on-site observations and design requirements. The complete construction process is as follows: According to the engineering drawings and geological conditions, the dewatering plan is designed in combination with the actual project situation. The outer water-stop ring is welded. The outer water-stop ring is located in the middle of the height of the waterproof casing. The inner water-stop ring is bolted and welded. A foundation cushion layer 3 is placed in the concrete bottom plate 1 to prevent displacement and provide a basic environment for subsequent construction. Then put the fixed water stop plate 1 41, movable ring steel plate 42, rubber gasket 1 43, waterproof layer 44 and rubber gasket 2 45 in the bottom water stop assembly 4 into the outside of the screw 2 48 at the top of the support ring 410. After the insertion and limiting are completed, the gravity of the above structure can be used to press the support ring 410 inside the foundation cushion 3 and rotate it by the rotating shaft 412. The squeezing spring 1 411 is pressed and kept in position to reduce the gap between the foundation cushion 3 and the bottom water stop assembly 4, thereby improving the water stop effect. Finally, the welding column 46 is directly welded to the inner wall of the lower steel cylinder 21 to complete the construction and assembly. Fill the 100mm below the bottom of the steel cylinder with graded sand and gravel, and pour UEA concrete from 100mm below the bottom of the foundation cushion layer inside the steel cylinder to the top of the steel cylinder. During construction, a steel cylinder with a thickness of more than 3mm and a diameter of 400mm is fixed at the wellhead, and the installation height is 50mm higher than the top surface of the bottom plate. When closing the wellhead, first take out the water pump, and pour graded sand and gravel from the bottom of the sand-free pipe to 100mm below the foundation cushion layer 3 inside the steel cylinder, and pour UEA concrete from 100mm below the foundation cushion layer 3 inside the steel cylinder to 150mm from the upper mouth of the upper steel cylinder 22. Finally, weld a circular sealing steel plate 150mm away from the mouth of the upper steel cylinder 22. The circular sealing steel plate is connected to the The steel cylinder is fully welded and sealed, and the upper steel cylinder 22 is hammered to sink it to the outside of the lower steel cylinder 21. The practical fastening screw sleeve 23 and the screw rod 24 are used to connect and position them. The remaining part is poured with UEA concrete of the same strength and vibrated to make it dense. At the same time, as the middle water stop component 6, the fixed water stop plate 2 61 needs to be sunk in advance between the annular groove 7 of the lower steel cylinder 21 and the upper steel cylinder 22, and the fixed water stop plate 2 61 pushes the conical head 65 into the interior by turning the screw rod 3 66, pushes the horizontal axis 63, and inserts the plug plate 62 into the annular groove 7 to complete the clamping and positioning. At the same time, the plug plate 62 is pressed tightly to prevent it from falling off, and the overall construction progress is faster.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drainage well sealing structure in a foundation bottom plate, comprising a steel cylinder adjustment component (2), wherein a concrete bottom plate (1) is arranged outside the steel cylinder adjustment component (2), and characterized in that: The steel cylinder adjustment assembly (2) comprises a lower steel cylinder (21) inserted into the concrete bottom plate (1), an upper steel cylinder (22) is sleeved inside the lower steel cylinder (21), and the bottom end of the steel cylinder adjustment assembly (2) further comprises a bottom water stop assembly (4); The bottom water stop assembly (4) comprises a fixed water stop plate (41) welded to the bottom of the concrete bottom plate (1); a movable ring steel plate (42) is fitted on the bottom end of the fixed water stop plate (41); a rubber gasket (43) is fitted on the bottom end of the movable ring steel plate (42); a waterproof layer (44) is fitted on the bottom end of the rubber gasket (43); a rubber gasket (45) is fitted on the bottom end of the waterproof layer (44); and a rubber gasket (46) is fitted on the bottom end of the rubber gasket (46). The bottom end of (45) is fitted with a foundation cushion layer (3) cast with the concrete bottom plate (1), a support ring (410) is suspended inside the top of the foundation cushion layer (3), a universal seat (47) is fixedly provided at the top of the support ring (410), a screw rod (48) penetrating the bottom water stop assembly (4) is rotatably provided inside the top of the universal seat (47), and a middle water stop assembly (6) is also included in the middle position inside the lower steel cylinder (21); The middle water stop assembly (6) comprises a second fixed water stop plate (61) which is attached to the inner wall of the lower steel cylinder (21).

2. The sealing structure of the drainage well in the foundation floor according to claim 1 is characterized by: Casting notches (5) are provided on both sides of the bottom end of the foundation cushion layer (3), and the interior of the casting notches (5) is arranged to be an inclined landslide.

3. The sealing structure of the drainage well in the foundation floor according to claim 1 is characterized by: A rotating shaft (412) plugged into the base cushion layer (3) is fixedly arranged on the outer side of the support ring (410), and a spring 1 (411) fixed to the base cushion layer (3) is fixedly arranged on the bottom end of the support ring (410).

4. The sealing structure of the drainage well in the foundation floor according to claim 1 is characterized in that: The outer spiral of the second screw rod (48) is provided with a second fastening screw sleeve (49) whose top is in contact with the first fixed water stop plate (41).

5. The sealing structure of the drainage well in the foundation slab according to claim 1 is characterized by: A welding column (46) is fixedly provided at the top end of the fixed water stop plate 1 (41) and is in contact with the inner wall of the lower steel cylinder (21). The welding column (46) is made of an iron welding rod.

6. The sealing structure of the drainage well in the foundation slab according to claim 1 is characterized by: UEA concrete is poured from 100 mm below the foundation cushion layer (3) to the top of the upper steel cylinder (22), and the UEA concrete is UEA expansive concrete with a strength grade of C45.

7. The sealing structure of the drainage well in the foundation slab according to claim 1 is characterized by: A screw rod (24) is fixedly provided at the edge where the lower steel cylinder (21) and the upper steel cylinder (22) are sleeved, and a fastening screw sleeve (23) is spirally provided on the outer side of the screw rod (24) and passes through the edge of the upper steel cylinder (22).

8. The sealing structure of the drainage well in the foundation floor according to claim 1 is characterized by: An annular groove (7) is formed inside the lower steel cylinder (21) and the upper steel cylinder (22), and the second fixed water stop plate (61) is located inside the annular groove (7). A cross groove is provided at the bottom end of the second fixed water stop plate (61), and a plug plate (62) located inside the annular groove (7) is slidably provided inside the cross groove of the second fixed water stop plate (61).

9. The sealing structure of the drainage well in the foundation floor according to claim 8, characterized in that: The insert plate (62) is internally plugged with a transverse axis (63), the other end of the transverse axis (63) is fitted with a conical head (65), and the top end of the conical head (65) is fixedly provided with a screw rod (66) which is spirally arranged with the second fixed water stop plate (61).

10. The sealing structure of the drainage well in the foundation floor according to claim 9, characterized in that: The outer side of the transverse axis (63) is sleeved with a second spring (64) which is in contact with the second fixed water stop plate (61), and the other end of the second spring (64) is in contact with the conical head (65). The outer side of the plug plate (62) is fixedly provided with a guide shaft (67) which is slidably arranged with the second fixed water stop plate (61).

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