CN219621838U

CN219621838U - Plugging device

Info

Publication number: CN219621838U
Application number: CN202320996629.0U
Authority: CN
Inventors: 陈松柏; 杨煌伟; 王晓燕; 徐畅; 付甲强
Original assignee: Tengda Construction Group Co Ltd
Current assignee: Tengda Construction Group Co Ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-09-01
Anticipated expiration: 2033-04-27

Abstract

The utility model relates to the technical field of foundation pit construction and discloses a plugging device. The plugging device comprises a plugging structure and a sealing cover structure, the plugging structure comprises a plugging air bag and a waterproof mortar layer, the plugging air bag is used for plugging the bottom wall opening or the side wall opening of the exploration pipe, the waterproof mortar layer is arranged in the exploration pipe, and the waterproof mortar layer is arranged between the top opening of the exploration pipe and the plugging air bag; the sealing cover structure comprises a concrete layer and a grouting layer, wherein the concrete layer is sealed and covered on the top opening of the exploration pipe, and the grouting layer is arranged on the periphery side of the exploration pipe. The utility model has good waterproof effect, and can effectively prevent underground water from entering the foundation pit structure through the exploration pipe, thereby avoiding water leakage accidents and endangering the safety of the foundation pit.

Description

Plugging device

Technical Field

The utility model relates to the technical field of foundation pit construction, in particular to a plugging device.

Background

The leakage of the exploratory hole is a common engineering disease phenomenon in the foundation pit excavation process, and if the excavation depth of the foundation pit is large, the leakage can seriously threaten the stability of the soil body at the bottom of the pit, thereby endangering the overall safety of the foundation pit.

In exploration operations, an exploration pipe is typically disposed within an exploration bore. Because the exploration hole is an unknown hole, the exploration pipe cannot be pre-plugged after the exploration operation is finished, and the exploration pipe is usually plugged in a simple way in foundation pit construction, such as mortar filling, so that the waterproof effect is poor, and water leakage accidents are easy to occur to some exploration pipes communicated with underground water, so that the safety of the foundation pit is endangered.

Disclosure of Invention

Based on the problems, the utility model aims to provide the plugging device which can plug the exploration pipe, has a good waterproof effect and can avoid water leakage accidents to endanger the safety of a foundation pit.

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

an occlusion device comprising:

the plugging structure comprises a plugging air bag and a waterproof mortar layer, wherein the plugging air bag is used for plugging the bottom wall opening or the side wall opening of the exploration pipe, the waterproof mortar layer is arranged in the exploration pipe, and the waterproof mortar layer is positioned between the top opening of the exploration pipe and the plugging air bag;

the sealing cover structure comprises a concrete layer and a grouting layer, wherein the concrete layer is sealed and covered on the top opening of the exploration pipe, and the grouting layer is arranged on the outer peripheral side of the exploration pipe.

As an alternative to the plugging device of the present utility model, the plugging structure further comprises a water-stop glue layer, which is arranged between the waterproof mortar layer and the plugging air bag.

As an alternative to the plugging device of the present utility model, the plugging structure further includes an air inlet pipe, which is communicated with the plugging air bag and extends into the water-stop glue layer.

As an alternative to the plugging device according to the utility model, the capping structure further comprises a grouting pipe penetrating the concrete layer and extending into the grouting layer.

As an alternative scheme of the plugging device, the middle part of the grouting pipe is provided with a water stop steel ring.

As an alternative scheme of the plugging device, the top of the grouting pipe is provided with a water-swelling water stop ring.

As an alternative of the plugging device of the present utility model, the plugging device further comprises an outer sleeve, wherein the outer sleeve is arranged on the outer peripheral side of the exploration pipe, and the outer sleeve is positioned between the exploration pipe and the grouting layer.

As an alternative to the plugging device of the utility model, a water stop ring is arranged in the middle of the outer sleeve.

As an alternative of the plugging device of the present utility model, the contact surface between the waterproof mortar layer and the concrete layer is a concave-convex surface.

As an alternative to the plugging device according to the utility model, it further comprises an additional layer of waterproofing, which is arranged on the outer circumferential side of the concrete layer.

The beneficial effects of the utility model are as follows:

according to the plugging device provided by the utility model, the bottom wall opening or the side wall opening of the exploration pipe is plugged through the plugging air bag, the bottom wall opening or the side wall opening can be plugged after the plugging air bag is inflated, the underground water and the exploration pipe are initially isolated, a drying convenient condition is provided for subsequent construction, mortar is poured into the exploration pipe to form a waterproof mortar layer, the waterproof mortar layer is positioned between the top opening of the exploration pipe and the plugging air bag, the underground water can be effectively prevented from entering a foundation pit structure through the exploration pipe, the top opening of the exploration pipe is sealed with a concrete layer, and the grouting layer is poured into the periphery side of the exploration pipe, so that the plugging waterproof effect of the plugging device is further improved, and the foundation pit safety is prevented from being endangered due to water leakage accidents.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic view of a plugging device according to an embodiment of the present utility model when plugging an opening in a bottom wall of a survey pipe;

FIG. 2 is a schematic structural view of a plugging device according to an embodiment of the present utility model when plugging a bottom wall opening and a side wall opening of a survey pipe;

fig. 3 is a schematic view of the structure of the capping structure and the waterproof additional layer in the plugging device according to the embodiment of the present utility model.

In the figure:

1. a plugging structure; 2. a capping structure; 3. an outer sleeve; 4. a water stop ring; 5. a waterproof additional layer;

11. plugging the air bag; 12. a waterproof mortar layer; 13. a water-stop adhesive layer; 14. an air inlet pipe;

21. a concrete layer; 22. grouting layer; 23. grouting pipe; 24. a water-stopping steel ring; 25. water-swellable

A water stop ring;

100. a prospecting tube; 200. a structural backing layer; 300. a structural bottom plate.

Detailed Description

In order to make the technical problems solved by the present utility model, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, the present embodiment provides a plugging device, which includes a plugging structure 1 and a capping structure 2, the plugging structure 1 includes a plugging balloon 11 and a waterproof mortar layer 12, the plugging balloon 11 is used for plugging a bottom wall opening or a side wall opening of a survey pipe 100, the waterproof mortar layer 12 is disposed in the survey pipe 100, and the waterproof mortar layer 12 is located between a top opening of the survey pipe 100 and the plugging balloon 11. The capping structure 2 includes a concrete layer 21 and a grouting layer 22, the concrete layer 21 capping the top opening of the survey tube 100, and the grouting layer 22 being disposed on the outer circumferential side of the survey tube 100.

The bottom wall opening or the side wall opening of the exploration pipe 100 is plugged through the plugging air bag 11, the plugging air bag 11 can plug the bottom wall opening or the side wall opening after being inflated and expanded, the underground water and the exploration pipe 100 are initially isolated, a drying convenient condition is provided for subsequent construction, mortar is poured into the exploration pipe 100 to form a waterproof mortar layer 12, the waterproof mortar layer 12 is positioned between the top opening of the exploration pipe 100 and the plugging air bag 11, the waterproof mortar layer 12 can effectively prevent underground water from entering a foundation pit structure through the exploration pipe 100, the top opening of the exploration pipe 100 is plugged with the concrete layer 21, the grouting layer 22 is poured into the periphery side of the exploration pipe 100, the plugging waterproof effect of the plugging device is further improved, and the occurrence of water leakage accidents is avoided to endanger the safety of a foundation pit.

To further improve the waterproof effect, the plugging structure 1 optionally further comprises a water-stop glue layer 13, wherein the water-stop glue layer 13 is arranged between the waterproof mortar layer 12 and the plugging air bag 11. The water-stop glue layer 13 can be formed by filling water-swelling water-stop glue, if the plugging air bag 11 leaks air or the plugging is not firm, underground water enters the exploration pipe 100 along the plugging air bag 11, the water-stop glue layer 13 reacts with water to swell and deform, the exploration pipe 100 can be fully filled, and because the water-stop glue layer 13 is provided with the water-proof mortar layer 12 above, the water-stop glue layer 13 swells basically only downwards, thereby filling the gap between the plugging air bag 11 and the exploration pipe 100, and the water-stop glue layer 13 swelled locally upwards can plug the gap of the water-proof mortar layer 12, so that the water-stop effect is more reasonable. To facilitate inflation of the plugging balloon 11, the plugging structure 1 optionally further comprises an air inlet pipe 14, the air inlet pipe 14 being in communication with the plugging balloon 11 and extending into the water-stop glue layer 13.

To facilitate grouting, the capping structure 2 optionally further comprises a grouting pipe 23, the grouting pipe 23 extending through the concrete layer 21 and into the grouting layer 22. The concrete layer 21 can be in a reverse bowl shape and cover at the top opening of the exploration pipe 100, and after the concrete layer 21 reaches the strength, grouting treatment is carried out to form a grouting layer 22, grouting slurry can be double-liquid slurry or cement mortar, and the reverse bowl-shaped concrete layer 21 can ensure that the grouting slurry is not scattered randomly and can avoid water from overflowing out of the exploration pipe 100. To further enhance the waterproof effect, the middle of the grouting pipe 23 is optionally provided with a water stop steel ring 24. Optionally, the top of grouting pipe 23 is provided with a water-swellable water stop 25. The water-swelling water stop ring 25 is made of polymer inorganic water-swelling material and rubber by refining, and can stop water when meeting water, and is more convenient to transport and store.

Optionally, the plugging device further comprises an outer sleeve 3, the outer sleeve 3 being arranged on the outer circumferential side of the investigation tube 100, the outer sleeve 3 being located between the investigation tube 100 and the grouting layer 22. Before the exploration pipe 100 is plugged, the exploration pipe 100 higher than the structural cushion layer 200 should be completely cut off, so that groundwater is prevented from entering the foundation pit structure through the exploration pipe 100 to cause water leakage, the outer sleeve 3 is sleeved on the outer peripheral side of the exploration pipe 100 left after cutting off, the connection mode of the outer sleeve 3 and the exploration pipe 100 is determined according to the material of the exploration pipe 100, for example, when the exploration pipe 100 is a PVC pipe, the outer sleeve 3 is also a PVC pipe, and the outer sleeve 3 and the exploration pipe 100 are connected by adopting hot melting. If the exploration pipe 100 is a steel pipe, the outer sleeve 3 is also a steel pipe, and the outer sleeve 3 and the exploration pipe 100 are connected by electric welding and full welding. Whichever connection is used, it is ensured that the probe 100 is tightly connected to the outer sleeve 3 and that no water leaks. In order to prevent groundwater from flowing upwards along the pipe wall of the outer sleeve 3, optionally the middle part of the outer sleeve 3 is provided with a water stop ring 4. The water stop ring 4 can be integrally formed with the outer sleeve 3, and can also be spliced into an integral structure, so that the installation is convenient.

Alternatively, the contact surface of the waterproof mortar layer 12 and the concrete layer 21 is a concave-convex surface. The top surface of the waterproof mortar layer 12 can be roughened to form a concave-convex surface, so that the contact surface area of the waterproof mortar layer 12 and the concrete layer 21 is increased, and the connection strength of the waterproof mortar layer 12 and the concrete layer 21 is enhanced.

To further enhance the waterproofing effect, the plugging device may optionally further comprise a waterproofing additional layer 5, the waterproofing additional layer 5 being provided on the outer peripheral side of the concrete layer 21. The structural cushion layer 200 and the structural bottom plate 300 of the foundation pit can be normally constructed above the waterproof additional layer 5, the waterproof additional layer 5 can be made of waterproof coiled materials, and the waterproof coiled materials are coiled sheet waterproof materials, so that the construction is convenient.

According to the plugging device provided by the embodiment, the bottom wall opening or the side wall opening of the exploration pipe 100 is plugged through the plugging air bag 11, the bottom wall opening or the side wall opening can be plugged after the plugging air bag 11 is inflated, the underground water and the exploration pipe 100 are initially isolated, the drying convenience condition is provided for subsequent construction, mortar is poured into the exploration pipe 100 to form the waterproof mortar layer 12, the waterproof mortar layer 12 is positioned between the top opening of the exploration pipe 100 and the plugging air bag 11, the waterproof mortar layer 12 can effectively prevent the underground water from entering the foundation pit structure through the exploration pipe 100, the concrete layer 21 is plugged at the top opening of the exploration pipe 100, the grouting layer 22 is poured at the peripheral side of the exploration pipe 100, the plugging waterproof effect of the plugging device is further improved, and the occurrence of water leakage accidents is avoided, so that the safety of the foundation pit is endangered.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. The plugging device is characterized by comprising:

the plugging structure (1) comprises a plugging air bag (11) and a waterproof mortar layer (12), wherein the plugging air bag (11) is used for plugging a bottom wall opening or a side wall opening of a exploration pipe (100), the waterproof mortar layer (12) is arranged in the exploration pipe (100), and the waterproof mortar layer (12) is positioned between a top opening of the exploration pipe (100) and the plugging air bag (11);

the sealing structure (2) comprises a concrete layer (21) and a grouting layer (22), wherein the concrete layer (21) is sealed to the top opening of the exploration pipe (100), and the grouting layer (22) is arranged on the outer periphery side of the exploration pipe (100).

2. The plugging device according to claim 1, wherein the plugging structure (1) further comprises a water-stop glue layer (13), the water-stop glue layer (13) being arranged between the water-stop mortar layer (12) and the plugging balloon (11).

3. Plugging device according to claim 2, wherein the plugging structure (1) further comprises an air inlet pipe (14), the air inlet pipe (14) being in communication with the plugging balloon (11) and extending into the water-stop glue layer (13).

4. The plugging device according to claim 1, wherein the capping structure (2) further comprises a grouting pipe (23), the grouting pipe (23) penetrating the concrete layer (21) and extending into the grouting layer (22).

5. Plugging device according to claim 4, wherein the grouting pipe (23) is provided with a water stop steel ring (24) in the middle.

6. Plugging device according to claim 4, wherein the top of the grouting pipe (23) is provided with a water-swellable water stop ring (25).

7. The plugging device according to claim 1, further comprising an outer sleeve (3), the outer sleeve (3) being arranged on the outer circumferential side of the exploration tube (100), the outer sleeve (3) being located between the exploration tube (100) and the grouting layer (22).

8. Plugging device according to claim 7, wherein the central part of the outer sleeve (3) is provided with a water stop ring (4).

9. Plugging device according to claim 1, wherein the contact surface of the waterproof mortar layer (12) and the concrete layer (21) is a concave-convex surface.

10. The plugging device according to claim 1, further comprising an additional layer of waterproofing (5), the additional layer of waterproofing (5) being arranged on the peripheral side of the concrete layer (21).