Tunnel portal water stop device

Abstract

The utility model relates to the technical field of underground pipe gallery construction, in particular to a tunnel portal water stopping device which comprises a plurality of tunnel portal water stopping device single bodies arranged in series, each tunnel portal water stopping device single body comprises an annular sealing frame and a plurality of water stopping structures, and the annular sealing frames are connected with the tunnel wall of a tunnel portal. The multiple water stop structures are arranged in the circumferential direction of the annular sealing frame and spliced with one another to form a jacking station used for pipe joint jacking. The water stopping structure comprises an elastic plate and a pressing plate, and the elastic plate is detachably connected to the annular sealing frame through the pressing plate. In the embodiment of the utility model, a plurality of sealing and water stopping structures are provided through the plurality of tunnel portal water stopping device single bodies which are connected in series, so that the sealing reliability of the tunnel portal water stopping device is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to underground pipe gallery construction technical field, concretely relates to a hole door water stop device. BACKGROUND

[0002] In the pipe jacking construction process, there is a certain gap between the pipe joint and the hole wall, groundwater and slurry are extremely easy to leak into the starting well, and even may cause accidents such as hole collapse due to unbalanced excavation face pressure. At present, in the underground pipe gallery (pipe jacking machine, pipe curtain machine and the like) construction field, hole door water stop mainly adopts sleeve sealing brush plus grease injection and the like, and the water stop effect is not ideal for high water pressure working conditions, and the sleeve sealing brush plus grease injection form has higher cost, and the construction is also more inconvenient.

[0003] In view of the above, it is urgent to provide a hole door water stop device to solve the problems in the prior art. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a hole door water stop device, and the specific technical scheme is as follows:

[0005] A hole door water stop device, comprising a plurality of hole door water stop device monomers arranged in series, the hole door water stop device monomer comprising an annular sealing frame and a plurality of water stop structures, the annular sealing frame being connected with the hole wall of the hole door, the plurality of water stop structures being arranged in the circumferential direction of the annular sealing frame, and the plurality of water stop structures being mutually spliced to form a jacking station for pipe joint jacking.

[0006] The water stop structure comprises an elastic plate and a pressing plate, and the elastic plate is detachably connected to the annular sealing frame through the pressing plate.

[0007] Further, the elastic plate comprises a flat portion and an inclined portion, and the flat portion is connected with the inclined portion; the flat portion is detachably connected to the annular sealing frame through the pressing plate, and the inclined portion is arranged outside the annular sealing frame and extends into the jacking station.

[0008] Further, the included angle α between the flat portion and the inclined portion is 110°±10°.

[0009] Further, the pressing plate is arranged outside the annular sealing frame, and one end of the pressing plate extending to the jacking station is not lower than the connecting point of the flat portion and the inclined portion.

[0010] Further, the elastic plate is a rubber plate.

[0011] Further, a grouting pipeline is arranged on the annular sealing frame in the radial direction.

[0012] Further, the pressing plate has a fan-shaped structure, the pressing plate is provided with a waist-shaped hole in the radial direction, and the waist-shaped hole is used for adjusting the distance between the pressing plate and the pipe joint.

[0013] Further, a seal is arranged between the annular sealing frame and the hole wall.

[0014] Further, the seal is an annular rubber plate.

[0015] The technical scheme of the utility model has the following beneficial effects:

[0016] (1) The utility model provides a hole door water stop device, including a plurality of series connection setting hole door water stop device monomer, the hole door water stop device monomer includes annular sealing frame and a plurality of water stop structure, the annular sealing frame is connected with the hole wall of hole door, a plurality of water stop structure is perpendicularly arranged along annular sealing frame, and a plurality of water stop structure mutually splices and forms the jacking station for pipe section jacking;The elastic plate is detachably connected on the annular sealing frame through the pressing plate, and the elastic plate includes the straight portion and the inclined portion, the straight portion is connected with the inclined portion, the straight portion is detachably connected on the annular sealing frame through the pressing plate, and the inclined portion extends to the jacking station.

[0017] (2) In the utility model, the elastic plate includes the straight portion and the inclined portion, the straight portion is connected with the inclined portion, the straight portion is detachably connected on the annular sealing frame through the pressing plate, and the inclined portion extends to the jacking station.

[0018] (3) The hole door water stop device provided by the utility model, the hole door water stop device monomer includes annular sealing frame and a plurality of water stop structure, and the plurality of water stop structures are spliced and assembled, so that the structure is simple, easy to disassemble and reuse, and the cost of hole door water stop is reduced.

[0019] (4) In the utility model, the included angle α between the straight portion and the inclined portion of the elastic plate is 110°±10°, so that the inclined portion is combined with the outer wall of pipe section A after jacking, and the elastic plate is prevented from being torn and damaged.

[0020] (5) In the utility model, the pressing plate is provided with a waist-shaped hole in the radial direction, and the waist-shaped hole is used for adjusting the distance between the pressing plate and the pipe section to meet the construction requirement.

[0021] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a front view of the tunnel door water-stopping device in the embodiment of the utility model;

[0024] Figure 2 yes Figure 1 Side view of;

[0025] Figure 3 This is a schematic diagram of the working status of the tunnel gate water-stop device;

[0026] Figure 4 is a structural diagram of an elastic plate;

[0027] Among them, 1. annular sealing frame, 1.1. grouting pipeline, 2. water-stop structure, 2.1. elastic plate, 2.1.1. straight part, 2.1.2. inclined part, 2.2. pressure plate, 3. sealing part. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0031] Example

[0032] A tunnel gate water-stop device, comprising a plurality of tunnel gate water-stop device units arranged in series, see Figure 1 and Figure 2In the embodiment, two hole sealing devices in series are taken as examples, which are a first hole sealing device (located at the left side in Figure 2 ) and a second hole sealing device (located at the right side in Figure 2 ).

[0033] The first hole sealing device and the second hole sealing device each include an annular sealing frame 1 and a plurality of sealing structures 2. The annular sealing frame 1 is connected to the hole wall of the hole, and the plurality of sealing structures 2 are circumferentially arranged along the annular sealing frame 1. The sealing structures 2 are detachably connected to the annular sealing frame 1. The plurality of sealing structures 2 are spliced to form a jacking station B for jacking the pipe section A.

[0034] Referring to Figure 2 , the sealing structure 2 includes an elastic plate 2.1 and a pressing plate 2.2. The elastic plate 2.1 is detachably connected to the annular sealing frame 1 through the pressing plate 2.2. The elastic plate 2.1 is preferably a rubber plate and has a certain amount of stretch, tensile strength, and hardness.

[0035] Referring to Figure 4 , the elastic plate 2.1 includes a flat portion 2.1.1 and an inclined portion 2.1.2. The flat portion 2.1.1 is connected to the inclined portion 2.1.2. After a plurality of elastic plates 2.1 are spliced, the whole has a horn-shaped structure. The flat portion 2.1.1 is detachably connected to the annular sealing frame 1 through the pressing plate 2.2. The inclined portion 2.1.2 extends out of the annular sealing frame 1 and extends into the jacking station B. Preferably, the included angle α between the flat portion 2.1.1 and the inclined portion 2.1.2 is 110°±10°, which ensures that the inclined portion 2.1.2 is in close contact with the outer wall of the pipe section A after jacking, and at the same time, avoids the elastic plate 2.1 from being torn and damaged.

[0036] Referring to Figure 3 , when the pipe section A is jacked into the jacking station B, the inclined portion 2.1.2 is deformed into a flat state and is in close contact with the outer wall of the pipe section A.

[0037] As another preferred technical solution, the elastic plates circumferentially arranged along the annular sealing frame 1 can also be an integral structure, so as to reduce the splicing operation of the elastic plates.

[0038] In the embodiment, referring to Figure 2 and Figure 3 , the pressing plate 2.2 extends out of the annular sealing frame 1. One end of the pressing plate 2.2 extending into the jacking station is not lower than the connection point of the flat portion 2.1.1 and the inclined portion 2.1.2. On the one hand, the pressing plate 2.2 does not affect the jacking operation of the pipe jacking, and on the other hand, the pressing plate 2.2 provides sufficient pressure support for the elastic plate 2.1.

[0039] Referring to Figure 1The pressing plate 2.2 is in a fan-shaped structure, and the pressing plate 2.2 is provided with a waist-shaped hole in a radial direction, which is used for adjusting the distance between the pressing plate 2.2 and the pipe section, and the size and the number of the pressing plate 2.2 can be adjusted according to the size of the pipe section, so as to adapt to the size of the pipe section, reduce the joint gap of the pressing plate, and reduce the leakage point.

[0040] In the embodiment, the annular sealing frame 1 is a ring structure welded by a steel plate, and the annular sealing frame 1 is provided with a grouting pipe 1.1 in a radial direction. When the pipe section A is pushed in, the pipe section A cooperates with the annular sealing frame 1 and the elastic plate 2.1 to form a sealing cavity with a certain volume, and grouting is performed in the sealing cavity through the grouting pipe 1.1, so as to improve the sealing effect.

[0041] In the embodiment, the annular sealing frame 1 is provided with a sealing element 3 between the annular sealing frame 1 and the hole wall. The sealing element 3 is an annular rubber plate, as shown in Figure 2 and Figure 3 , the sealing element 3 is arranged at the left end of the annular sealing frame 1 of the first hole sealing device monomer. The sealing element 3 has a certain amount of stretching, tensile strength and hardness, and fills the gap between the hole wall and the annular sealing frame 1, and plays a sealing role.

[0042] In the embodiment, when the hole sealing device is in a non-working state, the pressing plate 2.2 can move outward in a radial direction, so as to provide space for the main machine and the pipe section starting excavation. At this time, the elastic plate 2.1 is in a horn shape, as shown in Figure 2 ; when the hole sealing device is in a working state, the pressing plate 2.2 moves inward in a radial direction, and a small gap is left between the pressing plate 2.2 and the pipe section A. The elastic plate 2.1 is attached to the outer wall of the pipe section A, as shown in Figure 3 ; grouting is performed in the sealing cavity, so that the elastic plate 2.1 is tightly attached to the surface of the pipe section, and in the excavation process, the elastic plate 2.1 is pressed more tightly to the pipe section as the underground water pressure increases, so as to adapt to the high water pressure working condition.

[0043] In the embodiment, the first hole sealing device monomer and the second hole sealing device monomer are connected in series, so as to form two sealing water-stopping effects, and improve the hole sealing effect. The device structure is simple, and is convenient to assemble, so as to reduce the cost of the hole sealing.

[0044] As a preferred technical solution, in the embodiment, the first hole sealing device monomer and the second hole sealing device monomer connected in series. After the elastic plate is installed on the first annular sealing frame in the first hole sealing device monomer, the elastic plate in the first hole sealing device monomer can be fixed and pressed by the second annular sealing frame in the second hole sealing device monomer connected in series, so as to reduce the use of the pressing plate, and further reduce the cost.

[0045] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A portal waterstop, characterized in that, The utility model provides a tunnel portal water stop device, which comprises a plurality of tunnel portal water stop device units arranged in series, wherein each tunnel portal water stop device unit comprises a ring-shaped sealing frame (1) connected to a tunnel wall of a tunnel portal and a plurality of water stop structures (2) arranged circumferentially along the ring-shaped sealing frame (1), and the plurality of water stop structures (2) are spliced with each other to form a jacking station for jacking a pipe section. The water stop structure (2) comprises an elastic plate (2.1) and a pressing plate (2.2), and the elastic plate (2.1) is detachably connected to the ring-shaped sealing frame (1) through the pressing plate (2.2).

2. A device according to claim 1, wherein The elastic plate (2.1) comprises a flat portion (2.1.1) and an inclined portion (2.1.2), and the flat portion (2.1.1) is connected to the inclined portion (2.1.2); the flat portion (2.1.1) is detachably connected to the ring-shaped sealing frame (1) through the pressing plate (2.2), and the inclined portion (2.1.2) is arranged to protrude from the ring-shaped sealing frame (1) and extend into the jacking station.

3. A device according to claim 2, wherein The included angle (α) between the flat portion (2.1.1) and the inclined portion (2.1.2) is 110°±10°.

4. A device according to claim 2, wherein The pressing plate (2.2) is arranged to protrude from the ring-shaped sealing frame (1), and one end of the pressing plate (2.2) extending into the jacking station is not lower than the connection point of the flat portion (2.1.1) and the inclined portion (2.1.2). The elastic plate (2.1) is a rubber plate.

5. A portal waterstop according to claim 1, characterized in that The ring-shaped sealing frame (1) is provided with a grouting pipeline (1.1) arranged in a radial direction.

6. A portal waterstop according to claim 1, characterized in that The pressing plate (2.2) has a fan-shaped structure, and the pressing plate (2.2) is provided with a waist-shaped hole arranged in a radial direction, and the waist-shaped hole is used for adjusting the distance between the pressing plate (2.2) and the pipe section.

7. A portal waterstop according to claim 1, characterized in that The ring-shaped sealing frame (1) is provided with a sealing element (3) between the ring-shaped sealing frame (1) and the tunnel wall.

8. A device according to any one of claims 1 to 7, wherein The sealing element (3) is a ring-shaped rubber plate.

9. A device according to claim 8, wherein ​

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