CN211874508U - Plugging device and plugging structure used in subway tunnel invert lining repairing operation - Google Patents

Plugging device and plugging structure used in subway tunnel invert lining repairing operation Download PDF

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Publication number
CN211874508U
CN211874508U CN202020328942.3U CN202020328942U CN211874508U CN 211874508 U CN211874508 U CN 211874508U CN 202020328942 U CN202020328942 U CN 202020328942U CN 211874508 U CN211874508 U CN 211874508U
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China
Prior art keywords
plugging
plugging plate
plate
subway tunnel
inverted arch
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CN202020328942.3U
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Chinese (zh)
Inventor
王帆
武旭
尚新民
孙景来
余逸隆
王新灵
李明书
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Fujian Junchi Engineering Technology Co ltd
Beijing Municipal Engineering Research Institute
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Fujian Junchi Engineering Technology Co ltd
Beijing Municipal Engineering Research Institute
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Abstract

The utility model provides a plugging device and block structure that use in subway tunnel invert lining restoration operation relates to underground tunnel engineering seepage and administers technical field, has solved the drilling drill way mouth of a river of restoration usefulness and has easily leaked the technical problem of thick liquid. The blocking device used in the subway tunnel inverted arch lining repairing operation comprises a first blocking plate, a second blocking plate, a grouting pipe and an exhaust slurry return pipe, wherein the first blocking plate and the second blocking plate are arranged in a stacked mode and are connected in a gluing mode; the specification of the second plugging plate is smaller than that of the first plugging plate, and the grouting pipe and the exhaust slurry return pipe respectively sequentially penetrate through the second plugging plate and the first plugging plate and then extend to a to-be-repaired area; the plugging structure comprises a first shrinkage-free cement mortar layer, a water-based epoxy resin layer, an asphalt layer, a plugging device and a second shrinkage-free cement mortar layer which are sequentially arranged from bottom to top. The utility model is used for carry out the shutoff to the drilling drill way and prevent that the slip casting thick liquid from mixing from top to bottom, guarantee slip casting work normal clear simultaneously.

Description

Plugging device and plugging structure used in subway tunnel invert lining repairing operation
Technical Field
The utility model belongs to the technical field of the technique is administered in the underground tunnel engineering seepage and specifically relates to a plugging device and block structure that use in subway tunnel invert lining restoration operation are related to.
Background
The inverted arch of the subway tunnel is a reverse arch structure arranged at the bottom of the tunnel for improving the stress condition of an upper supporting structure, and is one of main components of the tunnel structure. The inverted arch effectively transmits the stratum pressure at the upper part of the tunnel to the underground through the side wall structure of the tunnel and resists the stratum counter force at the lower part of the tunnel. The tunnel inverted arch and the secondary lining form a whole tunnel, and the structural stability is improved. The integrity of the inverted arch is an important factor for ensuring the stability of the whole structure of the subway tunnel in the long-term operation process. The subway station with the largest buried depth in the opened subway in China is 94m, the urban subway engineering is located in the shallow part of the earth surface, most rock strata are silt, clay, sandy soil and the like, atmospheric precipitation and shallow underground water have obvious influence on soil bodies around the tunnel, and potential stability hazards are caused to the tunnel structure. The grouting filling and soil body reinforcing improvement are needed for the soil layer or soft soil layer containing holes, so that the safety and stability of the long-term operation of the subway are ensured. Soil body improvement and slip casting filling operation under the existing subway inverted arch need pass the lining cutting structure through the drilling, produce the damage to existing tunnel structure, in order to furthest resume lining cutting structural integrity, guarantee the stress balance state of inverted arch lining cutting, carry out hot pitch-cement mortar restoration operation to the drilling, in the repair process, the drilling drill hole mouth appears slip casting thick liquid overflow easily and leaks mixing from top to bottom, influences slip casting work and normally goes on.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a plugging device and block structure that use in subway tunnel invert lining restoration operation to solve the drilling drill way mouth of the restoration usefulness that exists among the prior art and easily leak the technical problem of thick liquid.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a plugging device that uses in subway tunnel invert lining restoration operation, including first shutoff board, second shutoff board, slip casting pipe and exhaust back flow pipe, first shutoff board with the second shutoff board is folded and is set up, and the veneer is connected between the two; the specification of the second plugging plate is smaller than that of the first plugging plate, and the grouting pipe and the exhaust slurry return pipe respectively penetrate through the second plugging plate and the first plugging plate in sequence and then extend to a region to be repaired.
As a further improvement, the first plugging plate is made of rubber material, and the second plugging plate is made of stainless steel material.
As a further improvement of the utility model, first shutoff board thickness is 5mm, second shutoff board thickness is 2 mm.
As a further improvement of the present invention, the grouting pipe and the exhaust slurry return pipe are connected by welding between the second plugging plates.
As a further improvement of the present invention, the grouting pipe and the exhaust slurry return pipe are along the first plugging plate circumferential direction is set, and the included angle between the two is 120 °.
As a further improvement, the exhaust slurry return pipe stretches out first shutoff board face distance is less than the slip casting pipe stretches out first shutoff board face distance.
As a further improvement, the first plugging plate is provided with a bell-mouth-shaped check ring along the whole circle, and the check ring is made of rubber materials.
The utility model provides a pair of block structure, include in proper order from the first no shrink cement mortar layer, waterborne epoxy layer, the pitch layer that upwards set up down plugging device, second no shrink cement mortar layer.
As a further improvement of the utility model, the plugging device is located 5cm above the waterproof layer.
As a further improvement of the utility model, the distance between the second non-shrink cement mortar layer top and the drilling drill way is 2 cm.
Compared with the prior art, the utility model following beneficial effect has:
the utility model provides a plugging device and block structure that use in subway tunnel invert lining cutting repair operation, at the repair process, carry out effective shutoff to the drilling drill way, not only prevent the upper and lower mixture of slip casting thick liquid, guarantee slip casting work normal clear simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of the plugging device used in the repairing operation of the inverted arch lining of the subway tunnel of the present invention;
fig. 2 is a top view of the plugging device used in the repairing operation of the inverted arch lining of the subway tunnel of the present invention;
fig. 3 is a cross-sectional view of the plugging structure of the present invention.
In the figure 1, a first plugging plate; 2. a second plugging plate; 3. a grouting pipe; 4. an exhaust slurry return pipe; 5. a retainer ring; 6. a first non-shrink cement mortar layer; 7. a waterborne epoxy resin layer; 8. a plugging device; 9. and the second non-shrinkage cement mortar layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a plugging device used in the inverted arch lining repair operation of a subway tunnel, which comprises a first plugging plate 1, a second plugging plate 2, a grouting pipe 3 and an exhaust slurry return pipe 4, wherein the first plugging plate 1 and the second plugging plate 2 are arranged in a stacking way and are connected with each other in a gluing way; the specification of the second plugging plate 2 is smaller than that of the first plugging plate 1, and the grouting pipe 3 and the exhaust slurry return pipe 4 sequentially penetrate through the second plugging plate 2 and the first plugging plate 1 respectively and then extend to a region to be repaired.
As an alternative embodiment, the first plugging plate 1 is made of rubber material and the second plugging plate 2 is made of stainless steel material.
It should be noted that, in the utility model discloses, 1 thickness of first shutoff board is 5mm, and 2 thicknesses of second shutoff board are 2 mm.
In order to improve the stability during grouting repair, the grouting pipe 3, the exhaust slurry return pipe 4 and the second plugging plate 2 are connected in a welding mode.
As shown in fig. 2, in an alternative embodiment of the present invention, the grouting pipe 3 and the exhaust slurry return pipe 4 are disposed along the circumferential direction of the first plugging plate 1, and the included angle therebetween is 120 °.
Considering the exhaust needs, the distance that exhaust slurry return pipe 4 stretches out first shutoff board 1 face is less than the distance that slip casting pipe 3 stretches out first shutoff board 1 face, and preferably, exhaust slurry return pipe 4 end slightly exceeds the first shutoff board 1 lower limb of rubber, is convenient for arrange the air completely.
In order to further improve the plugging and sealing effect, the lower edge of the first plugging plate 1 is provided with a bell-mouth-shaped check ring 5 along the whole circle, and the check ring 5 is made of rubber materials.
As shown in fig. 3, the utility model provides a pair of block structure, include in proper order from the first no shrink cement mortar layer 6, waterborne epoxy layer 7, pitch layer, plugging device 8, the no shrink cement mortar layer 9 of second of upwards setting down.
It should be noted that, in the present invention, the plugging device 8 is located 5cm above the waterproof layer.
It should be noted that, in the present invention, the distance between the top of the second non-shrinkage cement mortar layer 9 and the drilling hole opening is 2 cm.
The grouting pipe 3 and the exhaust and slurry return pipe 4 are located on one side of the second plugging plate 2, the pipes need to be connected through joints for length, after the use is finished, the pipes above the joints are detached, and the pipes below the joints and the pipes below the plugging devices are buried in the plugging structure.
The utility model provides a plugging device and block structure that use in subway tunnel invert lining cutting repair operation, at the repair process, carry out effective shutoff to the drilling drill way, not only prevent the upper and lower mixture of slip casting thick liquid, guarantee slip casting work normal clear simultaneously.
The construction method comprises the following steps:
before the plugging device 8 is installed, non-shrinkage cement is used for filling and plugging soil layer holes to form a first non-shrinkage cement mortar layer 6 with a certain thickness, and then a water-based epoxy resin layer 7 with a certain thickness is poured on the first non-shrinkage cement mortar layer 6 for plugging; after the water-based epoxy resin layer 7 is poured and reaches the designed strength, installing a plugging device 8, wherein a first plugging plate 1 in the plugging device 8 is made of a rubber plate, a second plugging plate 2 is made of a stainless steel plate, and the two plugging plates are bonded together; above the plugging device 8, a second non-shrinking cement mortar layer 9 is poured in the area 2cm below the drill hole opening. The plugging device 8 is installed 5cm above the waterproof layer. The hot asphalt grouting pipe 3 and the exhaust slurry return pipe 4 are welded on the second plugging plate 2 made of the stainless steel plate, so that the stability of the grouting pipe 3 and the plugging plate in the grouting process is ensured. The diameter of the first plugging plate 1 of rubber is the same as the diameter of a grouting drill hole, the circular arc part with the complete hole wall is installed, the circular arc part is tightly attached to the hole wall, the phenomenon that slurry overflows and the abrasion of the sealing plate in the long-term use process is reduced in the grouting process is avoided, the service life is prolonged, the slurry overflows for further placement, the bell-mouth-shaped check ring 5 is arranged on the lower edge of the first plugging plate 1, and the check ring 5 is also made of rubber materials. The utility model discloses in, 2 specifications of second shutoff board are less than and are less than 1 specifications of the first shutoff board of rubber, avoid producing wearing and tearing with pore wall direct contact, improve the bulk strength of shrouding simultaneously, guarantee the stability of slip casting in-process shutoff board structure.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The plugging device used in the inverted arch lining repairing operation of the subway tunnel is characterized by comprising a first plugging plate, a second plugging plate, a grouting pipe and an exhaust back grouting pipe, wherein the first plugging plate and the second plugging plate are stacked and are in glued connection; the specification of the second plugging plate is smaller than that of the first plugging plate, and the grouting pipe and the exhaust slurry return pipe respectively penetrate through the second plugging plate and the first plugging plate in sequence and then extend to a region to be repaired.
2. The plugging device for repairing the inverted arch lining of the subway tunnel according to claim 1, wherein the first plugging plate is made of rubber material, and the second plugging plate is made of stainless steel material.
3. The plugging device for repairing an inverted arch lining of a subway tunnel according to claim 2, wherein said first plugging plate has a thickness of 5mm and said second plugging plate has a thickness of 2 mm.
4. The plugging device for repairing the inverted arch lining of the subway tunnel according to claim 1, wherein the grouting pipe and the exhaust and return pipe are welded to the second plugging plate.
5. The plugging device for repairing an inverted arch lining of a subway tunnel according to claim 1, wherein said grouting pipe and said exhaust slurry return pipe are arranged along the circumferential direction of said first plugging plate, and the included angle between the grouting pipe and the exhaust slurry return pipe is 120 °.
6. The plugging device for repairing the inverted arch lining of the subway tunnel according to claim 1, wherein the distance of the exhaust slurry return pipe extending out of the first plugging plate surface is smaller than the distance of the grouting pipe extending out of the first plugging plate surface.
7. The blocking device used in the repairing operation of the inverted arch lining of the subway tunnel according to claim 1, wherein a bell-mouth-shaped check ring is arranged on the lower edge of the first blocking plate along the whole circle, and the check ring is made of rubber materials.
8. Plugging structure, characterized in that it comprises a first non-shrink cement mortar layer, a water-based epoxy resin layer, an asphalt layer, a plugging device according to any one of claims 1 to 7, a second non-shrink cement mortar layer, arranged in this order from bottom to top.
9. The plugging structure of claim 8, wherein said plugging device is located 5cm above the waterproof layer.
10. The plugging structure of claim 8, wherein the distance between the top of the second non-shrink cement mortar layer and the borehole opening is 2 cm.
CN202020328942.3U 2020-03-16 2020-03-16 Plugging device and plugging structure used in subway tunnel invert lining repairing operation Active CN211874508U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020328942.3U CN211874508U (en) 2020-03-16 2020-03-16 Plugging device and plugging structure used in subway tunnel invert lining repairing operation

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Application Number Priority Date Filing Date Title
CN202020328942.3U CN211874508U (en) 2020-03-16 2020-03-16 Plugging device and plugging structure used in subway tunnel invert lining repairing operation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114182746A (en) * 2021-12-22 2022-03-15 北京建工集团有限责任公司 Self-plugging device for dewatering well and installation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114182746A (en) * 2021-12-22 2022-03-15 北京建工集团有限责任公司 Self-plugging device for dewatering well and installation method thereof

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