CN215635445U

CN215635445U - Interim block structure of underground works

Info

Publication number: CN215635445U
Application number: CN202120920851.3U
Authority: CN
Inventors: 张新涛; 崔秀峰; 王志新; 赵东方; 王丽翠
Original assignee: China Construction Fifth Bureau Third Construction Co Ltd
Current assignee: China Construction Fifth Bureau Third Construction Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-01-25
Anticipated expiration: 2031-04-29

Abstract

A temporary plugging structure for underground engineering comprises a rigid waterproof sleeve, wherein the rigid waterproof sleeve comprises a steel pipe poured on a wall body of an underground structure and a first wing ring welded at one end of the steel pipe; the first threaded connecting piece is arranged on the first wing ring; the end cover and the annular sealing gasket sequentially penetrate through the first threaded connecting piece; part of the structure of the end cover can be inserted into the steel pipe to seal the gap between the inner wall of the steel pipe and the end cover; an annular gasket is sandwiched between the first wing ring and the end cap, the annular gasket being configured to seal a gap between the end cap and the first wing ring; a second threaded connector threadably connectable to the first threaded connector to secure the end cap and the first wing ring. The utility model solves the problems of untight plugging and leakage or leakage of the temporary plugging structure of the preformed hole on the wall body of the underground engineering in the prior art.

Description

Interim block structure of underground works

Technical Field

The utility model relates to the technical field of underground structural engineering construction, in particular to a temporary plugging structure for underground engineering.

Background

Because the problem of connection between an internal pipeline and an external formal pipeline after an underground project (such as an underground garage) is finished needs to be considered, the formal pipeline needs to penetrate through a wall body to be connected with the internal pipeline during installation, and therefore a reserved hole for the formal pipeline to penetrate through needs to be reserved on the wall body in the underground project construction process.

Before formal pipelines are installed, water exists in a soil layer structure on the outer side of a wall body of underground engineering, or when the underground engineering is in a rain and snow environment, the water can enter the soil layer structure, the water can enter the underground engineering from a reserved hole due to the reasons, the wall body and the inside of the underground engineering are soaked, installation of the formal pipelines is affected, and in severe places, the wall body needs to be maintained for many times, so that engineering cost is increased.

In general, in the underground construction process, the prepared hole is formed by arranging a rigid waterproof sleeve with a wing plate in a wall body, and after pouring, the rigid waterproof sleeve is embedded into the wall body for installing a formal pipeline.

Before the formal pipeline is installed, in order to prevent water in the soil layer structure from entering the underground engineering through the reserved hole, an opening at one end of the reserved rigid waterproof casing is generally plugged by a plugging head. Specifically, the plugging head is of a T-shaped structure, and flax is wound on the periphery of one end, inserted into the rigid waterproof sleeve, of the plugging head and is in interference fit with the rigid waterproof sleeve, so that temporary plugging of the reserved hole is achieved. And when the formal pipeline is installed, the plugging head is detached.

The plugging mode leads to untight plugging of the plugging head due to reasons such as inconsistent operation level of workers, and the like, and the problem of leakage or leakage is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model solves the defects of the prior art and provides the temporary plugging structure for the underground engineering, which has good plugging effect and no leakage or leakage risk.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the temporary plugging structure comprises a rigid waterproof sleeve 1, wherein the rigid waterproof sleeve 1 comprises a steel pipe 11 poured in a wall 10 of an underground structure, a first wing ring 12 welded at one end of the steel pipe 11, a plurality of first threaded connectors 2 arranged on the first wing ring 12, an end cover 3 and an annular sealing gasket 4, through holes matched with the first threaded connectors 2 in position and size are formed in the end cover 3 and the annular sealing gasket 4, the end cover 3 is hermetically arranged on the first wing ring 12 through the annular sealing gasket 4, and the first threaded connectors 2 penetrate through the through holes and are connected to the second threaded connectors 5 on the first threaded connectors 2 through threads to tightly press and fasten the end cover 3, the annular sealing gasket 4 and the first wing ring 12; and one side of the end cover 3 facing the first wing ring 12 is provided with an annular part 32 which is matched with the inner diameter of the steel pipe 11 and can extend into the inner cavity of the steel pipe 11 to be hermetically connected with the inner wall of the steel pipe 11.

In this embodiment, the first wing ring 12 is embedded in the wall 10, and the outer surface of the first wing ring 12 is flush with the inner wall surface of the wall 10.

In the present embodiment, the first threaded connector 2 is a stud disposed along the axial direction of the steel pipe 11, and the stud is welded to the first wing ring 12.

In this embodiment, the first threaded connectors 2 are symmetrically and uniformly distributed on the first wing ring 12 with the steel pipe 11 as the center.

In the present embodiment, the thickness of the annular seal 4 ranges from 5mm to 10 mm.

In the present embodiment, the inner diameter of the steel pipe 11 is 50mm to 400 mm.

In the present embodiment, the end cap 3 includes a disk portion 31 and an annular portion 32 connected to the disk portion 31; the disc part 31 is provided with a through hole corresponding to the first threaded connecting piece 2, and the annular sealing gasket 4 is matched with the disc part 31 in size; the annular sealing gasket 4 is sleeved outside the annular part 32 and is in contact with the disc part 31, a groove 321 is formed in the outer side surface of the annular part 32 along the circumferential direction, and a sealing ring 6 used for sealing a gap between the steel pipe 11 and the annular part 32 is arranged in the groove 321.

In the present embodiment, at least one of the grooves 321 is provided in the axial direction of the annular portion 32.

In this embodiment, the annular sealing gasket 4 is made of rubber or silica gel, and the sealing ring 6 is made of rubber or silica gel.

In this embodiment, at least one second wing ring 13 is disposed below the first wing ring 12 on the steel pipe 11, a preset interval is formed between the second wing ring 13 and the first wing ring 12, and the second wing ring 13 is poured in the wall 10.

The utility model has the beneficial effects that: the temporary plugging structure for underground engineering is characterized in that a first wing ring is additionally arranged on the basis of an original rigid waterproof sleeve, a first threaded connecting piece is arranged on the first wing ring, and an end cover is fastened on the first wing ring by utilizing the threaded connection effect of a second threaded connecting piece and the first threaded connecting piece. In addition, an annular gasket is provided between the end cover and the first wing ring, and the gap between the end cover and the first wing ring is sealed by the pressing action of the end cover and the first wing ring on the annular gasket therebetween. After the installation, the partial structure of end cover inserts the inside of steel pipe to the clearance between the inner wall of sealed steel pipe and the end cover realizes double seal, increases the reliability of shutoff, realizes the shutoff to rigid waterproof sleeve pipe through above-mentioned structure.

Compared with the plugging mode in the prior art, the temporary plugging structure for the underground engineering is convenient to install, and the problem of plugging leakage or leakage caused by the influence of the technical level of workers in the installation process is basically avoided, so that the maintenance work amount of the wall body is reduced. Simultaneously, compare the mode of twineing among the prior art and covering flax, only need fasten first threaded connection spare and second threaded connection spare in this embodiment and can realize the end cover to the shutoff of rigidity waterproof casing, reduced workman's work load by a wide margin, improved work efficiency.

Moreover, the temporary plugging structure for the underground engineering is simple in integral structure and low in cost. After the end cover is installed on the formal pipeline and is disassembled, the end cover can be repeatedly used, and the engineering cost is further reduced.

Drawings

Fig. 1 is an exploded view of the present invention in a location on a wall.

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a front view of the present invention mounted to a wall;

fig. 4 is a sectional view taken along line a-a of fig. 3 of the present invention.

In the figure:

10. a wall body;

1. a rigid waterproof sleeve; 11. a steel pipe; 12. a first wing ring; 13. a second wing ring;

2. a first threaded connection;

3. an end cap; 31. a disk portion; 32. an annular portion; 321. a groove;

4. an annular seal;

5. a second threaded connection; 6. and (5) sealing rings.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the present invention, the directional terms such as "upper", "lower", "left", "right", "inner" and "outer" are used for easy understanding without making a contrary explanation, and thus do not limit the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In order to solve the problems in the prior art, as shown in fig. 1 to 4, the present embodiment provides a temporary plugging structure for underground engineering, which includes a rigid waterproof casing 1, a first threaded connector 2, an end cap 3, an annular sealing gasket 4, and a second threaded connector 5.

The rigid waterproof casing 1 comprises a steel pipe 11 poured in a wall 10 of an underground structure and a first wing ring 12 welded at one end of the steel pipe 11, and the first wing ring 12 is provided with a first threaded connecting piece 2. The end cover 3 and the annular sealing gasket 4 sequentially penetrate through the first threaded connecting piece 2, and the annular sealing gasket 3 is arranged inside the steel pipe 11 and is not inserted into the steel pipe 11 so as to seal a gap between the inner wall of the steel pipe 11 and the end cover 3. The annular seal 4 is interposed between the first wing ring 12 and the end cover 3, and the annular seal 4 is configured to seal a gap between the end cover 3 and the first wing ring 12. The second threaded connector 5 can be screwed to the first threaded connector 2 to fasten the end cap 3 and the first wing ring 12. Specifically, the annular seal gasket 4 and the end cover 3 can be sequentially threaded through the first threaded connection member 2, and the second threaded connection member 5 is screwed into the first threaded connection member 2 to fasten the end cover 3 and the first wing ring 12, and the second threaded connection member 5 is located outside the end cover 3. Specifically, in the present embodiment, the first wing ring 12 has a circular ring shape.

In this embodiment, the temporary plugging structure for underground engineering is formed by adding the first wing ring 12 on the basis of the original rigid waterproof casing 1, arranging the first threaded connector 2 on the first wing ring 12, and fastening the end cap 3 to the first wing ring 12 by using the threaded connection between the second threaded connector 5 and the first threaded connector 2. Further, an annular packing 4 is provided between the end cover 3 and the first wing ring 12, and a gap between the end cover 3 and the first wing ring 12 is sealed by a pressing action of the end cover 3 and the first wing ring 12 on the annular packing 4 therebetween. After installation, part of the structure of the end cover 3 is inserted into the steel pipe 11 to seal the gap between the inner wall of the steel pipe 11 and the end cover 3, so that double sealing is realized, the plugging reliability is improved, and the rigid waterproof sleeve 1 is plugged through the structure. When the formal pipeline is installed, the end cover 3 is detached, the formal pipeline penetrates through the rigid waterproof sleeve 1, and the space between the formal pipeline and the rigid waterproof sleeve 1 is filled and sealed, which is not described in detail herein.

Further preferably, in order to ensure the structural stability of the rigid waterproof jacket 1 in the wall 10, the rigid waterproof jacket 1 further includes at least one second wing ring 13 disposed along the axial direction of the steel pipe 11, the second wing ring 13 is spaced from the first wing ring 12 by a second preset distance, and the second wing ring 13 is poured in the wall 10. In this embodiment, as shown in fig. 1, there is one second wing ring 13. The number and size of the second wing rings 13 are determined according to the inner diameter size of the steel pipe 11 and the length thereof.

Preferably, in this embodiment, the inner diameter of the steel pipe 11 of the rigid waterproof jacket 1 ranges from 50mm to 400 mm. Because the diameter is less than 50mm, the size of the annular sealing gasket 4 is small, and the problem of untight plugging is easy to occur. After above-mentioned diameter is greater than 400mm, because of above-mentioned end cover 3 size is great, in order to guarantee the fastening back of end cover 3, the annular seal 6 atress is balanced, does not appear revealing, need set up a plurality of first threaded connection spare 2, and fastening nut is too much, leads to work load big, influences work efficiency.

On the premise of meeting design requirements, the structural size of the waterproof rigid sleeve 10 needs to be reduced as much as possible, so that the material of the rigid waterproof sleeve 1 is saved to the greatest extent, the cost is reduced, and meanwhile, in order to ensure the overall attractiveness of the structure after plugging, the engineering acceptance and handover is facilitated. Further preferably, the first wing ring 12 is embedded in the wall 10, and the first wing ring 12 is flush with the inner wall surface of the wall 10.

Further preferably, to save installation time, in this embodiment, the first threaded connector 2 is a stud welded to the first wing ring 12. In particular, in this embodiment, the rigid waterproofing sleeve 1 and the first threaded connector 2 are prefabricated at the factory. In addition, also can reuse the welding machine to weld first threaded connection spare 2 after rigid waterproof sleeve 1 pours and accomplishes, because of first threaded connection spare 2 is small-size, welding speed is fast, can not influence the installation effectiveness of the interim block structure of underground works.

Because the first threaded connector 2 is welded to the rigid waterproof casing 1, after the formal pipeline is installed, the redundant first threaded connector 2 is selected to be continuously reserved or cut according to the plugging structure form between the rigid waterproof casing 1 and the formal pipeline.

In other embodiments, after the rigid waterproof sleeve 1 is installed, one end of the rigid waterproof sleeve close to the cavity 10 may also protrude out of the inner wall surface of the wall 10, and after the rigid waterproof sleeve 1 is installed, the first wing ring 12 is spaced from the inner wall surface of the wall 10 by a first preset distance, in this embodiment, the first wing ring 12 is provided with a through hole through which the first threaded connector 2 is inserted, and the first threaded connector 2 is disposed in the through hole. Preferably, in the present embodiment, the first threaded connector 2 is a bolt, and the bolt is inserted into the through hole, so as to fasten the end cover 3 and the first wing ring 12. In this embodiment, the bolts, the second threaded connector 5 and the end cap 3 are all removable and reusable when the official pipe is installed.

Preferably, the second threaded connector 2 is a nut, or a wing nut.

Further preferably, in order to balance the stress on the annular seal 4 between the end cap 3 and the first wing ring 12, the first threaded connectors 2 are circumferentially and uniformly distributed on the first wing ring 12 around the steel pipe 11. Further preferably, the first threaded connectors 2 are arranged in a group along the same diameter in the circumferential direction of the first wing ring 12, and the number of the groups of the first threaded connectors 2 arranged on the first wing ring 12 is determined according to the inner diameter of the steel pipe 11 and the size of the annular seal 4, and the larger the size is, the larger the number of the groups is.

Further preferably, the end cap 3 includes a disc portion 31 and an annular portion 32 connected to the disc portion 31; the disc part 31 is provided with a through hole corresponding to the first threaded connecting piece 2, and the annular sealing gasket 4 is matched with the disc part 31 in size; the annular sealing gasket 4 is sleeved outside the annular part 32 and is in contact with the disc part 31, a groove 321 is formed in the outer side surface of the annular part 32 along the circumferential direction, and a sealing ring 6 used for sealing a gap between the steel pipe 11 and the annular part 32 is arranged in the groove 321.

In the present embodiment, as shown in fig. 1, the disk portion 31 is a circular plate, and the annular portion 32 is circular. By means of double sealing of the annular sealing gasket 4 and the sealing ring 6, the influence of factors of operation errors of workers in the installation process is further reduced, and the reliability of plugging is greatly improved. And the annular part 32 is provided with the groove 321, so that the structure is simple, the processing is convenient and the cost is low.

In other embodiments, a rubber ring may be fitted around the outer periphery of the annular portion 32, and when the end cap 3 is attached, the annular portion 32 is inserted into the steel pipe 11, and the rubber ring seals a gap between the inner wall of the steel pipe 11 and the annular portion 32. Specifically, the size of the rubber ring can be calculated according to actual needs. In addition, the end cover 3 can be a plastic piece, so that the weight of the end cover 3 is reduced, and the workload is reduced.

Further preferably, the outer diameter of the annular portion 32 and the axial dimension thereof are adjusted correspondingly to each other, depending on the inner diameter of the steel pipe 11. To further ensure the reliability of the seal, at least one groove 321 is provided in the outer periphery of the annular portion 32. The distance between the adjacent two grooves 321 in the axial direction of the annular portion 32 can be determined according to actual requirements.

Further preferably, the annular seal 4 is made of rubber or silicone, and the seal ring 6 is made of rubber or silicone.

Further preferably, the thickness of the annular seal 4 is in the range of 5mm to 10 mm.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a temporary block structure of underground works, its characterized in that, includes rigidity waterproof jacket pipe (1), rigidity waterproof jacket pipe (1) including pour steel pipe (11) in wall body (10) of underground structure, welding first wing ring (12) of the one end of steel pipe (11), set up in a plurality of first threaded connection spare (2) and end cover (3) and the annular is sealed to fill up (4) on first wing ring (12), be equipped with on end cover (3) and the annular is sealed to fill up (4) with first threaded connection spare (2) position, size assorted through-hole, end cover (3) are through annular is sealed to fill up (4) seal and are installed on first wing ring (12), and first threaded connection spare (2) pass the through-hole, through second threaded connection spare (5) of threaded connection on first threaded connection spare (2) with end cover (3), The annular sealing gasket (4) and the first wing ring (12) are mutually pressed and fastened; and one side of the end cover (3) facing the first wing ring (12) is provided with an annular part (32) which is matched with the inner diameter of the steel pipe (11) in size and can extend into the inner cavity of the steel pipe (11) to be hermetically connected with the inner wall of the steel pipe (11).

2. Temporary plugging structure for underground works according to claim 1, characterized in that said first wing ring (12) is embedded in said wall (10) and the outer surface of said first wing ring (12) is flush with the inner wall surface of said wall (10).

3. Temporary plugging structure for underground works according to claim 1, characterized in that said first threaded connection (2) is a stud running axially along a steel pipe (11) welded to said first wing ring (12).

4. The temporary plugging structure of underground engineering according to claim 1, wherein said first threaded connectors (2) are symmetrically and uniformly distributed on said first wing ring (12) with steel pipe (11) as center.

5. Temporary plugging structure for underground works according to claim 1, characterized in that said annular gasket (4) has a thickness ranging from 5mm to 10 mm.

6. Temporary plugging structure for underground works according to claim 1, characterized in that the inner diameter of the steel pipe (11) is 50mm-400 mm.

7. An underground working temporary blocking structure according to claim 1, wherein the end cap (3) comprises a disc portion (31) and an annular portion (32) connected to the disc portion (31); the disc part (31) is provided with a through hole corresponding to the first threaded connecting piece (2), and the annular sealing gasket (4) is matched with the disc part (31) in size; annular seal pad (4) suit is in annular portion (32) outer and disc portion (31) contact, the lateral surface of annular portion (32) is provided with recess (321) along circumference, be provided with in recess (321) and be used for sealing steel pipe (11) with sealing washer (6) in the clearance between annular portion (32).

8. Temporary plugging structure for underground works according to claim 7, wherein said grooves (321) are provided with at least one in the axial direction of the ring-shaped portion (32).

9. Temporary plugging structure for underground works according to claim 7, characterized in that said annular sealing gasket (4) is made of rubber or silicone and said sealing ring (6) is made of rubber or silicone.

10. Temporary plugging structure for underground works according to any one of claims 1 to 9, wherein at least one second wing ring (13) is arranged on the steel pipe (11) below the first wing ring (12), the second wing ring (13) is arranged at a preset interval from the first wing ring (12), and the second wing ring (13) is poured in the wall body (10).