CN111058861A

CN111058861A - Hole structure

Info

Publication number: CN111058861A
Application number: CN201911261802.7A
Authority: CN
Inventors: 陈健; 李克金; 王剑; 徐传东; 郭栋; 王志康; 耿本涛; 高洪吉; 孙伟; 张曦; 胡少华; 王北北
Original assignee: Chian Railway 14th Bureau Group Corp Tunnel Engineering Co ltd; China Railway 14th Bureau Group Co Ltd
Current assignee: Chian Railway 14th Bureau Group Corp Tunnel Engineering Co ltd; China Railway 14th Bureau Group Co Ltd; China Railway 14th Bureau Group Tunnel Engineering Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-04-24

Abstract

The invention provides a hole structure, which is suitable for tunnel hole construction, and comprises: the embedded assembly is arranged around the opening; the sealing assembly is arranged on the embedded assembly; the waterproof device is connected with the sealing assembly; wherein, seal assembly's at least part and watertight fittings's at least part all set up in the entrance to shelter from the at least part of entrance to a cave respectively, watertight fittings is used for being connected with the shield structure section of jurisdiction in the entrance to a cave and seals up the entrance to a cave. The tunnel opening structure solves the problem that the tunnel opening in the prior art is easy to collapse.

Description

Hole structure

Technical Field

The invention relates to the technical field of tunnel construction, in particular to a hole structure.

Background

At present, with the rapid development of urban rail transit, shield construction gradually becomes a main construction method for urban subway construction. The shield method is to advance the shield machine in the ground, prevent the collapse of the tunnel by the shield shell and the surrounding rock wall supported by the duct piece, simultaneously excavate the soil body by the cutting device in front of the excavation face, and transport the soil out of the tunnel by the unearthing machine. In the construction of tunnel, the entrance to a cave department in tunnel is one of the position that takes place to collapse most easily, and the entrance to a cave in tunnel not only stress is concentrated relatively, and its entrance to a cave department still permeates water easily, and current entrance to a cave reinforcing apparatus receives the problem of infiltration after long-time use, not only takes place to warp easily, still can lead to reinforcing apparatus inoperative, causes the problem that the entrance to a cave collapses.

Disclosure of Invention

The invention mainly aims to provide an opening structure to solve the problem that an opening of a tunnel in the prior art is easy to collapse.

In order to achieve the above object, according to one aspect of the present invention, there is provided an opening structure suitable for tunnel opening construction, the opening structure comprising: the embedded assembly is arranged around the opening; the sealing assembly is arranged on the embedded assembly; the waterproof device is connected with the sealing assembly; wherein, seal assembly's at least part and watertight fittings's at least part all set up in the entrance to shelter from the at least part of entrance to a cave respectively, watertight fittings is used for being connected with the shield structure section of jurisdiction in the entrance to a cave and seals up the entrance to a cave.

Further, the waterproof device includes: the first waterproof board assembly is connected with the sealing assembly; the second waterproof board assembly is rotatably connected with the first waterproof board assembly and arranged in the hole to be used for shielding at least part of the hole.

Further, the second flashing member includes: the waterproof boards are arranged on the first waterproof board assembly at intervals and are connected with the first waterproof board assembly in a rotating mode.

Further, the seal assembly includes: the first sealing part is arranged between the embedded component and the first waterproof board component; second sealing part the second sealing part is rotationally connected with first sealing part, and the second sealing part sets up in the entrance to be used for being connected with the shield structure section of jurisdiction.

Further, the first sealing part is made of waterproof materials.

Further, the second sealing part is made of elastic materials.

Further, the second sealing portion is the rubber slab, and the one end that first sealing portion was kept away from to the rubber slab is equipped with sealed head, and sealed head setting is close to the one side of shield structure section of jurisdiction at the rubber slab.

Further, the opening structure further comprises: and the supporting device is arranged on the embedded component and used for installing the sealing component.

Further, the supporting device includes: the connecting plate is connected with the embedded assembly and fixed on the edge of the opening; the epitaxial plate, the epitaxial plate is connected with the connecting plate, and the epitaxial plate sets up along the axis direction of entrance to a cave, and seal assembly is connected with the one end that the connecting plate was kept away from to the epitaxial plate.

Further, the embedded assembly comprises; the embedded nut is embedded in the edge of the opening, and the connecting plate is detachably connected with the embedded nut so as to be fixed to the edge of the opening.

The tunnel portal structure applying the technical scheme of the invention is mainly applied to tunnels or other building portals, and has the characteristics of easy sealing and rainwater prevention. The opening structure is arranged at an initial opening or a final opening of a tunnel, and comprises a pre-buried assembly, a sealing assembly and a waterproof device, wherein the pre-buried assembly is pre-buried around the opening when the opening is poured so as to facilitate the subsequent installation of the sealing assembly or the waterproof device, the sealing assembly and the waterproof device both play roles of sealing and waterproofing, when the structure is specifically arranged, the sealing assembly is arranged on the pre-buried assembly so as to be detachably connected with the pre-buried assembly, the waterproof device is arranged at one side of the sealing assembly, which is far away from the pre-buried assembly, the waterproof device is made of waterproof materials so as to prevent rainwater or sundries outside the opening from entering the tunnel, the sealing assembly is made of elastic or flexible materials so as to enable a shield machine to enter and simultaneously stop the rainwater outside the opening, and the sealing assembly, the waterproof device and a shield sheet dug and laid with the tunnel are matched so as to prevent the rainwater from permeating into concrete, thereby effectively preventing the problem of cave entrance collapse of the tunnel.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a cross-sectional view of an embodiment of an opening configuration according to the invention;

FIG. 2 shows a schematic view of the connection of the opening structure of the present invention to a shield segment;

fig. 3 is a partial structural schematic view of an embodiment of the waterproof device of the opening structure of the present invention.

Wherein the figures include the following reference numerals:

10. pre-burying the assembly; 11. pre-burying a nut; 20. a seal assembly; 21. a first seal portion; 22. a second seal portion; 221. a sealing head; 30. a waterproof device; 31. a first flashing member; 32. a second flashing member; 321. a waterproof sheet; 40. a support device; 41. a connecting plate; 42. an epitaxial plate; 50. a connecting bolt; 60. mounting a plate; 70. and (4) shield segments.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The present invention provides a tunnel portal structure, which is suitable for tunnel portal construction, please refer to fig. 1 to 3, wherein the tunnel portal structure comprises: the embedded assembly 10 is arranged around the opening of the hole, and the embedded assembly 10 is arranged around the opening of the hole; the sealing assembly 20 is arranged on the embedded assembly 10; the waterproof device 30, the waterproof device 30 is connected with the sealing assembly 20; wherein, at least part of seal assembly 20 and at least part of watertight fittings 30 all set up in the entrance to shelter from at least part of entrance to a cave respectively, watertight fittings 30 are used for being connected with the shield of entrance to a cave section of jurisdiction 70 and seal the entrance to a cave.

The invention provides a design of a tunnel portal structure, which is mainly applied to tunnels or other building portals, and has the characteristics of easy sealing and rainwater prevention. The opening structure is arranged at an initial opening or a final opening of a tunnel, and comprises a pre-buried component 10, a sealing component 20 and a waterproof device 30, wherein the pre-buried component 10 is pre-buried around the opening when the opening is poured so as to facilitate the subsequent installation of the sealing component or the waterproof device, the sealing component and the waterproof device both have sealing and waterproof functions, when the structure is specifically arranged, the sealing component 20 is arranged on the pre-buried component 10 so as to be detachably connected with the pre-buried component, the waterproof device 30 is arranged at one side of the sealing component far away from the pre-buried component, the waterproof device is made of waterproof materials so as to prevent rainwater or sundries outside the opening from entering the tunnel, the sealing component is made of elastic or flexible materials so as to enable a shield machine to enter and stop the rainwater outside the opening, and the sealing component, the waterproof device and a shield sheet dug and provided with a tunnel mat are matched so as to prevent the rainwater from permeating into concrete poured at the opening, thereby effectively preventing the problem of cave entrance collapse of the tunnel.

The waterproof device 30 includes: a first waterproof plate assembly 31, the first waterproof plate assembly 31 being connected to the sealing assembly 20; a second flashing member 32, the second flashing member 32 being rotatably connected to the first flashing member 31, the second flashing member 32 being arranged in the opening for covering at least part of the opening. The second flashing member 32 includes: a plurality of waterproof boards 321, the plurality of waterproof boards 321 being arranged on the first waterproof board assembly 31 at intervals to be respectively rotatably connected with the first waterproof board assembly 31.

As shown in fig. 1, the waterproof device 30 in this embodiment includes a first waterproof board assembly 31 and a second waterproof board assembly 32, the first waterproof board assembly 31 is disposed around the opening, the first waterproof board assembly 31 preferably includes an annular steel plate and is fixed at the opening edge, the second waterproof board assembly 32 includes a plurality of waterproof boards 321, the plurality of waterproof boards 321 are uniformly distributed at the edge of the opening, the waterproof boards 321 adopt trapezoidal boards, the narrower one side of the trapezoidal boards is rotatably connected with the annular steel plate, the specific trapezoidal boards are hinged with the first waterproof board assembly through a pin shaft, and the wider one side of the trapezoidal boards is shielded in the opening.

The seal assembly 20 includes: the first sealing part 21, the first sealing part 21 is arranged between the embedded component 10 and the first waterproof board component 31; second seal 22 the second seal 22 is rotatably connected to the first seal 21, the second seal 22 being disposed within the opening for connection to a shield segment 70. The first sealing portion 21 is made of a waterproof material. The second seal portion 22 is made of an elastic material.

The sealing assembly 20 comprises a first sealing part 21 and a second sealing part 22, the first sealing part 21 and the second sealing part 22 are made of waterproof materials, preferably, the first sealing part 21 is tightly wound by circumferential cotton yarns, the second sealing part 22 is tightly wound by radial nylon threads, the circumferential direction is arranged around the tunnel, the radial direction is the radial direction of the cross section of the tunnel portal, the first sealing part and the second sealing part are flexibly connected, the second sealing part can bend and swing relative to the first sealing part, when the shield tunneling machine moves from the outside to the tunnel, the second sealing part is firstly contacted with a waterproof plate and then pushed to rotate towards the inside of the tunnel, then the second sealing part is pushed to swing relative to the first sealing part by the waterproof plate, and the second sealing part is flexibly and tightly contacted with the shield tunneling machine or the shield piece to prevent water from flowing into the tunnel along the outside of the shield piece.

The second sealing portion 22 is a rubber plate, a sealing head 221 is arranged at one end, away from the first sealing portion 21, of the rubber plate, and the sealing head 221 is arranged at the end portion of the rubber plate and located on one side, in the same advancing direction, of the rubber plate and the shield tunneling machine.

Preferably, the second sealing portion in this embodiment is made of a rubber material, the rubber material not only has elasticity but also can prevent water, and a sealing head 221 is further disposed at one end of the rubber plate away from the first sealing portion, and the sealing head is disposed at one side of the rubber plate close to the shield segment 70.

The opening structure further comprises: and the supporting device 40 is arranged on the embedded assembly 10, and is used for installing the sealing assembly 20. The supporting device 40 includes: the connecting plate 41 is connected with the embedded component 10 so as to be fixed on the edge of the opening; and the extension plate 42 is connected with the connecting plate 41, the extension plate 42 is arranged along the axial direction of the hole, and the sealing assembly 20 is connected with one end of the extension plate 42, which is far away from the connecting plate 41.

As shown in fig. 1, the opening structure in this embodiment is further provided with a supporting device 40, and the supporting device 40 extends the sealing assembly and the waterproof assembly to the opening for a certain distance to mount, so as to prevent rainwater from directly entering the concrete at the opening through the sealing assembly or the waterproof assembly, which causes the problem of water seepage and collapse at the opening. Specifically, the supporting device 40 includes a connecting plate 41 and an extending plate 42, the supporting device is welded with the mounting plate 60 to form a groove-shaped structure, the connecting plate 41 is parallel to the cross section of the tunnel opening, the extending plate 42 is perpendicular to the connecting plate and extends outwards along the tunnel opening, the sealing assembly is fixed on the mounting plate 60 through a connecting bolt 50, and the mounting plate 60 is connected with the supporting device so as to be fixed at the tunnel opening.

The embedded component 10 comprises; the embedded nuts 11 are embedded in the edge of the hole, and the connecting plate 41 is detachably connected with the embedded nuts 11 to be fixed on the edge of the hole.

As shown in fig. 1, the embedded assembly 10 in this embodiment includes a plurality of embedded nuts 11, the embedded nuts 11 are disposed around the edge of the opening at intervals, and the connecting plate is detachably fixed to the edge of the opening through embedded bolts that are matched with the embedded nuts.

From the above description, it can be seen that one embodiment of the above-described opening structure of the present invention is as follows:

the mounting plate pre-buried at the working well portal of the shield tunneling machine is a circular plate structure with the design width of 1m, and the diameter of the inner side surface of the steel ring is 9.6 m. The ring surface of the mounting plate is vertical to the design axis of the shield tunneling machine. The steel ring is vertically buried in the major structure, and the steel ring outside sets up the anchor bar and buries in the major structure.

And the installation arrangement of the sealing ring is carried out after the shield machine is assembled and debugged in the well.

The sealing assembly adopts rubber curtain cloth, the second waterproof plate assembly adopts a fan-shaped pressing plate, and when the hole door sealing device is installed, the installation directions of the rubber curtain cloth and the fan-shaped pressing plate need to be noticed. The sealing head 221 of the rubber curtain cloth end is the same as the shield tunneling direction.

Before entering the reserved hole, the shield tunneling machine coats lubricating oil on the peripheral cutter head and the outer side of the cord fabric rubber plate so as to prevent the cutter head of the shield tunneling machine from being hung on the cord fabric rubber plate to influence the sealing effect.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an entrance to a cave structure, is applicable to tunnel entrance to a cave construction, its characterized in that, the entrance to a cave structure includes:

the embedded component (10), the embedded component (10) is arranged around the opening;

the sealing assembly (20), the sealing assembly (20) is arranged on the embedded assembly (10);

a water-proofing device (30), said water-proofing device (30) being connected with said sealing assembly (20);

at least part of the sealing assembly (20) and at least part of the waterproof device (30) are arranged in the cave so as to respectively shield at least part of the cave, and the waterproof device (30) is used for being connected with a shield segment (70) in the cave to seal the cave.

2. The hole structure according to claim 1, characterized in that said waterproofing means (30) comprise:

a first flashing assembly (31), the first flashing assembly (31) being connected to the sealing assembly (20);

a second flashing member (32), the second flashing member (32) being rotatably connected with the first flashing member (31), the second flashing member (32) being arranged within the aperture for covering at least part of the aperture.

3. The opening structure according to claim 2, characterized in that said second flashing member (32) comprises:

a plurality of waterproof boards (321), a plurality of the waterproof boards (321) are arranged on the first waterproof board assembly (31) at intervals so as to be respectively connected with the first waterproof board assembly (31) in a rotating way.

4. The hole structure according to claim 2, characterized in that said sealing assembly (20) comprises:

the first sealing part (21), the first sealing part (21) is arranged between the embedded component (10) and the first waterproof board component (31);

second seal portion (22) the second seal portion (22) is rotatably connected with the first seal portion (21), the second seal portion (22) is disposed within the bore for connection with a shield segment (70).

5. The hole structure according to claim 4, characterized in that said first sealing portion (21) is made of a waterproof material.

6. Hole structure according to claim 4, characterized in that said second sealing portion (22) is made of an elastic material.

7. The hole structure according to claim 6, characterized in that the second sealing portion (22) is a rubber plate, and a sealing head (221) is arranged at one end of the rubber plate far away from the first sealing portion (21), and the sealing head (221) is arranged at one side of the rubber plate close to the shield segment (70).

8. The opening structure according to claim 1, characterized in that it further comprises:

a support device (40), the support device (40) being arranged on the embedded assembly (10) for installing the sealing assembly (20).

9. The portal structure according to claim 8, characterized in that said support means (40) comprise:

the connecting plate (41), the connecting plate (41) is connected with the embedded component (10) to be fixed on the edge of the opening;

epitaxial plate (42), epitaxial plate (42) with connecting plate (41) are connected, epitaxial plate (42) are followed the axis direction of entrance to a cave sets up, seal assembly (20) with epitaxial plate (42) is kept away from the one end of connecting plate (41) is connected.

10. The hole structure according to claim 9, characterized in that said pre-buried assembly (10) comprises;

the embedded nut (11), embedded nut (11) is pre-buried in the border of entrance to a cave, connecting plate (41) with embedded nut (11) detachably connects to fix the border of entrance to a cave.