CN115306453A - Water-stopping sealing device for shield tunnel portal - Google Patents
Water-stopping sealing device for shield tunnel portal Download PDFInfo
- Publication number
- CN115306453A CN115306453A CN202211145764.0A CN202211145764A CN115306453A CN 115306453 A CN115306453 A CN 115306453A CN 202211145764 A CN202211145764 A CN 202211145764A CN 115306453 A CN115306453 A CN 115306453A
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- China
- Prior art keywords
- steel wire
- water
- curtain cloth
- rubber curtain
- sealing
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
Abstract
The invention relates to the technical field of tunnel construction, in particular to a water-stopping sealing device of a shield tunnel door, which comprises a rubber curtain cloth plate and a steel wire brush, wherein the rubber curtain cloth plate and the steel wire brush are arranged in a coaxial ring shape; the rubber curtain cloth plate and the steel wire brush are sequentially arranged along the first direction, and the steel wire brush can be pressed on the rubber curtain cloth plate under the action of external force, so that the rubber curtain cloth plate is tightly attached to the shell of the shield machine, and the water-stopping sealing effect of the rubber curtain cloth plate is improved.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a water-stopping sealing device for a shield tunnel portal.
Background
The shield construction method is widely applied to underground engineering construction, the shield construction technology is not influenced by conditions such as ground traffic, river channels, climate and the like, and the safe construction of the tunnel can be economically and reasonably ensured; the shield can realize automation, intellectualization and construction remote control informatization, such as propelling, unearthing, lining splicing and the like, the tunneling speed is high, the construction labor intensity is low, and the construction safety is high; in the soil or soft rock stratum, tunneling long-distance tunnel engineering has the advantages of economy, technology, safety and the like.
When the water content of the stratum in the construction range is large, the stratum is disturbed in the starting and receiving processes of the shield machine, a seepage passage of underground water is easily formed between the tunnel portal and the shield machine shell, and accidents such as water burst and sand burst are induced by the outflow of the underground water with mud and sand, so that water is required to be stopped at the tunnel portal, and the shield machine is ensured to be started and received smoothly. The water-stopping sealing device for the tunnel portal commonly used in the industry generally comprises two steel wire brushes and a rubber curtain board, wherein the rubber curtain board is compressed by a folding pressing board to realize the sealing effect, but the fitting degree of the rubber curtain board, a shield body of a shield machine and the folding pressing board is not high, the phenomena of water leakage and slurry leakage are easily generated, and particularly, when the underground water pressure is higher, the risk of water burst/sand burst is higher.
Disclosure of Invention
The invention aims to provide a water-stopping sealing device for a shield tunnel portal, which can effectively enhance the water-stopping effect of a rubber curtain cloth plate and ensure the orderly construction of a shield.
In order to achieve the purpose, the invention adopts the following technical scheme:
the water-stopping sealing device of the shield tunnel portal comprises a rubber curtain cloth plate and a steel wire brush, wherein the rubber curtain cloth plate and the steel wire brush are coaxial and annular, the rubber curtain cloth plate and the steel wire brush are sequentially arranged along a first direction, and when the shield tunnel portal penetrates through the tunnel portal, the steel wire brush can be pressed on the rubber curtain cloth plate.
Optionally, the number of the steel wire brushes is two, a sealing cavity is formed between the two steel wire brushes, and grease can be filled in the sealing cavity.
Optionally, the axial section of the steel wire brush is annular, two steel wire brushes are connected with each other to form an infinity-shaped structure, and a grease injection hole is formed at the joint of the infinity-shaped structure.
Optionally, the tunnel cave further comprises a filler sealing assembly, wherein the filler sealing assembly is arranged on one side, far away from the tunnel cave door, of the rubber curtain cloth plate and the steel wire brush.
Optionally, the packing seal assembly includes a bottom plate, a pressing plate and a sealing packing, the bottom plate, the pressing plate and the sealing packing are all annular, the bottom plate and the pressing plate are axially arranged at an interval along the hole door and form a clamping area, the sealing packing is located in the clamping area, and a gap of the clamping area is adjustable in size and can be limited, locked and squeezed.
Optionally, the bottom plate further includes an annular limit connection portion, and the limit connection portion is attached to an outer peripheral side of the sealing filler and can limit deformation of the outer peripheral side of the sealing filler.
Optionally, the packing seal assembly further comprises an annular gland, the gland being screwed onto the base plate, the gland abutting the pressure plate.
Optionally, the water-stopping sealing device of the shield tunnel portal further comprises an extension steel ring, the steel wire brush is mounted on the inner wall of the extension steel ring, and the rubber curtain cloth plate is arranged on the end face of the extension steel ring.
Optionally, the curtain fabric further comprises a folding flap, and the folding flap is arranged on one side, back to the steel wire brush, of the rubber curtain fabric board.
Optionally, a protruding portion is arranged at the tail of one end, attached to the steel wire brush, of the rubber curtain cloth plate.
The invention has the beneficial effects that: the water-stopping sealing device for the shield tunnel portal is arranged on the inner side or the outer side of the tunnel portal when in use, the rubber curtain cloth plate and the steel wire brush are coaxially arranged with the tunnel portal along the inner side circumference of the tunnel portal, the steel wire brush and the rubber curtain cloth plate are arranged along the advancing direction of the shield machine, when the shield machine passes through the tunnel portal, the rubber curtain cloth plate is extruded on the steel wire brush under the extrusion action of the shield machine shell, namely the steel wire brush not only can play a water-stopping sealing effect, but also can be pressed on the rubber curtain cloth plate to extrude the rubber curtain cloth plate, so that the rubber curtain cloth plate is more tightly attached to the shield machine, and the water-stopping effect of the rubber curtain cloth plate is enhanced.
Drawings
FIG. 1 is a schematic structural diagram of a water-sealing device installed at an originating tunnel door according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a water-stopping sealing device installed at a receiving cavity door according to an embodiment of the present invention;
fig. 3 is a schematic view of a portion of a stuffing seal assembly according to an embodiment of the present invention.
In the figure: 11. a rubber cord fabric sheet; 12. a steel wire brush; 121. a grease injection hole; 13. a packing seal assembly; 131. a base plate; 131a and a limit connecting part; 132. pressing a plate; 133. sealing the filler; 134. a gland; 135. a gland bolt; 14. a folding flap; 15. extending the steel ring; 2. a tunnel portal; 3. a portal steel ring; 31. an axial steel ring; 32. a radial steel ring; 4. a shield machine.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
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 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 embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The invention provides a water-stopping sealing device for a shield tunnel portal, which is mainly applied to water-stopping sealing in the shield construction process, is particularly arranged on an initial shield tunnel portal and/or a receiving shield tunnel portal, and can be abutted against a rubber curtain fabric plate when a shield machine passes through the tunnel portal by changing the form of a steel wire brush, so that the water-stopping sealing effect of the rubber curtain fabric plate is enhanced.
Referring to fig. 1 to 3, the water-stop sealing device for a shield tunnel portal according to this embodiment is installed on a portal steel ring 3 pre-buried in a portal 2, and includes a rubber curtain cloth plate 11 and a steel wire brush 12, the rubber curtain cloth plate 11 and the steel wire brush 12 are sequentially arranged along a first direction (in this embodiment, the traveling direction of the shield machine 4) and respectively serve as a first re-sealing assembly and a second re-sealing assembly, the rubber curtain cloth plate 11 and the steel wire brush 12 are annular and coaxial with the portal 2, and when the shield machine 4 passes through the portal 2, the steel wire brush 12 close to the rubber curtain cloth plate 11 can abut against the rubber curtain cloth brush 11.
When the shield machine 4 passes through the tunnel portal 2, the steel wire brush 12 close to the rubber cord fabric plate 11 can extrude the outer surface of the rubber cord fabric brush 11 due to the elasticity of the steel wire brush, so that the steel wire brush is more tightly attached to the shield machine 4 to form a first heavy seal, and a good water stop sealing effect is achieved.
The steel wire brushes 12 are arranged twice and arranged along the first direction, grease can be filled between the steel wire brushes 12 to form sealing, the water stopping effect of the whole water stopping sealing device is enhanced, and the phenomena of water leakage and slurry leakage are avoided.
Optionally, the axial cross-section of steel brush sets up to the annular, simultaneously for reducing the space that whole stagnant water sealing device occupy, twice steel brush 12 interconnect is "∞" shape, and the handing-over department of twice steel brush 12 is equipped with a plurality of notes fat holes 121 along steel brush 12's circumference interval, and each notes fat hole 121 is through corresponding notes fat pipe and grease distributing valve intercommunication, can pour into the sealed chamber that forms between twice steel brush 12 with the grease into, plays the sealed effect of stagnant water.
Specifically, the steel brush 12 includes steel wire and spring leaf, and wherein the spring leaf parcel is in the periphery of steel wire to improve whole steel brush 12's elasticity, thereby when guaranteeing that shield constructs machine 4 and passes through portal 2, steel brush 12 closely laminates with rubber curtain cloth board 11, and steel brush 12's loop configuration can be based on the steel brush 12 structure among the prior art and bend and form.
Furthermore, the tail of one end of the rubber curtain cloth plate 11, which is attached to the steel wire brush 12, is provided with a protruding part, so that the rubber curtain cloth plate can be better attached to the steel wire brush 12, and the sealing effect is ensured.
Referring to fig. 1 and 2, the portal steel ring 3 pre-buried in the portal 2 has an L-shaped axial cross section with a thickness of about 10mm, and includes an axial steel ring 32 pre-buried in the inner wall of the portal 2 and a radial steel ring 31 pre-buried in the end face of the portal 2, and the axial steel ring 32 and the radial steel ring 31 are separately arranged.
As shown in figure 1, the water-stopping sealing device for the shield tunnel portal installed at the starting tunnel portal is characterized in that a rubber curtain cloth plate 11 is fixed on a radial steel ring 31 through a fixing bolt, a steel wire brush 12 is installed on the inner wall of an axial steel ring 32, when a shield machine 4 advances towards the tunnel portal 2, the rubber curtain cloth plate 11 is spread, the rubber curtain cloth plate 11 deforms towards the direction of the steel wire brush 12 in the tunnel portal 2, the steel wire brush 12 is pressed against the rubber curtain cloth plate 11, and the elasticity of the steel wire brush acts on the rubber curtain cloth plate 11 to enable the rubber curtain cloth plate 11 to be tightly attached to the shell of the shield machine 4, so that the water-stopping sealing effect is achieved.
As shown in fig. 2, the water-stop sealing device for a shield tunnel portal installed at a receiving tunnel portal further comprises an extension steel ring 15, a rubber curtain cloth plate 11 is installed on a radial steel ring 31 through a fixing bolt, a steel wire brush 12 is arranged on the inner wall of the extension steel ring 15 installed on one side of the rubber curtain cloth facing away from the radial steel ring 31, the extension steel ring 15 and the tunnel portal 2 are coaxially arranged, when the rubber curtain cloth plate 11 is installed, the extension steel ring 15 and the rubber curtain cloth plate 11 are fixed through the same fixing bolt, that is, the rubber curtain cloth plate 11 is arranged on the end face of the extension steel ring 15 connected with the radial steel ring 31, when the shield machine 4 drives away from the tunnel portal 2, the rubber curtain cloth plate 11 is spread, the rubber curtain cloth plate 11 deforms towards the direction of the steel wire brush 12 outside the tunnel portal 2, and the steel wire brush 12 presses on the rubber curtain cloth plate 11 to enable the rubber curtain cloth plate to be tightly attached to the shield machine 4 shell; rubber curtain cloth 11 still is provided with the board 14 of turning over of folding paper towards one side of shield structure machine 4, turns over the board 14 of folding paper including fixing the mounting panel on radial steel ring 31 and with the mounting panel rotation connection's returning face plate, at shield structure machine 4 propulsion in-process, the returning face plate can take place the upset under shield structure machine 4 advancing action to withstand rubber curtain cloth 11, avoid appearing the place ahead and lead to the situation appearance of the reverse upset of rubber curtain cloth 11 because of soil and water pressure is too big.
Referring to fig. 2-3, the water-stop sealing device for the shield tunnel portal in this embodiment further includes a third triple sealing assembly, which is a packing sealing assembly 13, and includes a bottom plate 131, a pressing plate 132 and a sealing packing 133, wherein the bottom plate 131, the pressing plate 132 and the sealing packing 133 are all of an annular structure coaxial with the tunnel portal 2, the bottom plate 131 and the pressing plate 132 are arranged at intervals along the extending direction of the tunnel portal 2 and form a clamping area, the sealing packing 133 is located in the clamping area, an initial gap of the clamping area is consistent with the thickness of the sealing packing 133, so as to prevent the sealing packing 133 from separating from the clamping area, the size of the gap of the clamping area is adjustable, and the sealing packing 133 can be uniformly squeezed by reducing the gap between the bottom plate 131 and the pressing plate 132, so that the thickness of the sealing packing 133 is reduced, and deformation in the radial direction is generated, thereby achieving the effects of close fitting with the shield machine 4 and water-stop sealing.
In order to conveniently adjust the distance between the bottom plate 131 and the pressing plate 132, when in specific use, the packing seal assembly 13 is arranged outside the tunnel portal 2, and is specifically arranged at the outermost end of the water stop sealing device of the whole shield tunnel portal, namely, at one side of the rubber curtain cloth plate 11 and the steel wire ring away from the tunnel portal 2. For example, if the whole device is installed at the originating door, the stuffing seal assembly 13 is installed at the side of the rubber curtain cloth plate 11 facing away from the door 2, specifically, the bottom plate 131 is installed at the radial steel ring 31, if the whole device is installed at the receiving door, the stuffing seal assembly 13 is installed at the side of the steel wire brush 12 facing away from the door 2, specifically, the bottom plate 131 is installed at the extension steel ring 15, and the bottom plate 131 may be integrally formed with the extension steel ring 15 to form a "Z" shape or a "U" shape structure, in this embodiment, in order to reduce the volume of the steel wire brush 12, a "Z" shape is formed between the bottom plate 131 and the extension steel ring 15.
Optionally, in order to make the sealing filler 133 deform inward as much as possible during radial deformation to tightly attach to the shield machine housing, the bottom plate 131 further includes an annular limiting connection portion 131a coaxial with the tunnel door 2, the limiting connection portion 131a is attached to the outer peripheral side of the sealing filler 133, when the bottom plate 131 and the pressing plate 132 press the sealing filler 133, the limiting connection portion 131a prevents the sealing filler 133 from deforming in the direction of the outer peripheral side, and the sealing filler 133 is tightly attached to the shield machine 4 housing.
In order to apply force to the pressing plate 132 conveniently, the packing seal assembly 13 further comprises an annular pressing cover 134 coaxial with the hole door 2, the pressing cover 134 is connected with the bottom plate 131 through a pressing cover bolt 135 and is particularly connected with a limiting connecting portion 131a of the bottom plate 131, the axial cross section of the limiting connecting portion 131a is in an L shape, the axial cross section of the pressing cover 134 is in an L shape consistent with the opening direction of the limiting connecting portion 131a, the pressing plate 132 can be pushed by one end, axially consistent, of the pressing cover 134 and the hole door 2, one end, radially consistent, of the pressing cover 134 and the hole door 2 is connected with the limiting connecting portion 131a through the pressing cover bolt 135, and a gap in a clamping area can be reduced by tightening the pressing cover bolt 135, so that the packing seal 133 is radially deformed. In this embodiment, the packing 133 is made of butter packing, which has good self-lubricity, low friction coefficient, and wear resistance.
The pressing plate 132 may be slidably mounted on the limit connection portion 131a of the bottom plate 131, or may be mounted on an end portion of the pressing cover 134, and is not particularly limited as long as an axis of the pressing plate 132 is aligned with an axis of the tunnel door 2.
It can be understood that, in the water-stopping sealing device for the shield tunnel portal installed at the starting tunnel portal, since the bottom plate 131 is installed at the side of the rubber curtain cloth 11 facing away from the tunnel portal 2, the bottom plate 131 can function as the folding flap 14, so that the folding flap 14 can be omitted when the whole water-stopping sealing device for the shield tunnel portal is installed at the starting tunnel portal.
The invention also comprises an installation method of the water-stopping sealing device of the shield tunnel portal, which takes installation at a receiving tunnel portal as an example (the water-stopping sealing device of the shield tunnel portal comprises a packing sealing assembly 13).
S1, screwing one end of a fixing bolt into a radial steel ring 31 of a pre-embedded portal steel ring 3, then sequentially installing a folding turnover plate 14, a rubber curtain cloth plate 11, an extension steel ring 15 and a steel wire brush 12, welding the folding turnover plate, the rubber curtain cloth plate 11, the extension steel ring 15 and the steel wire brush 12 on the extension steel ring 15 in advance, and then sleeving a nut on the fixing bolt and screwing the nut;
s2, the sealing filler 133 and the pressure plate 132 are sequentially arranged on the axial outer side of the bottom plate 131, so that the sealing filler 133 is positioned in a clamping area formed by the pressure plate 132 and the bottom plate 131, and the sealing filler 133 is in a relaxed state without being compressed.
When the shield machine 4 passes through the rubber curtain cloth plate 11, because the inner diameter of the rubber curtain cloth plate 11 is smaller than the outer diameter of the shell of the shield machine 4, the shield machine 4 opens the rubber curtain cloth plate 11, the rubber curtain cloth plate 11 wraps and compresses one of the steel wire brushes 12, the reaction force of the steel wire brushes 12 and the elasticity of the rubber curtain cloth plate 11 make the rubber curtain cloth plate 11 closely attached to the shell of the shield machine 4, and a first heavy water sealing effect is achieved.
When the shield machine 4 passes through the two steel wire brushes 12, grease is injected into a sealing cavity formed by the steel wire brushes 12 through the grease injection holes 121, and the grease and the steel wire brushes 12 jointly play a second role in water sealing.
When the shield machine 4 continues to pass through the packing seal assembly 13, the gland 134 drives the pressing plate 132 to uniformly extrude the seal packing 133, the thickness of the seal packing 133 is reduced, the seal packing deforms in the radial direction, the seal packing is tightly attached to the shield machine 4, and a third water-stopping sealing effect is achieved.
Different from the receiving portal, when the shield machine 4 passes through the starting portal, the gland 134 drives the pressing plate 132 to uniformly extrude the sealing filler 133 through the filler sealing assembly, the sealing filler 133 generates radial deformation and is tightly attached to the shield machine 4, and the first heavy water sealing effect is achieved.
When the shield machine 4 passes through the rubber curtain cloth plate 11, the rubber curtain cloth plate 11 is tightly attached to the steel wire brush, and a second water-stopping sealing effect is achieved.
When the shield machine 4 continues to pass through the two steel wire brushes 12, the sealed cavity filled with grease has a third water-stopping and sealing effect.
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. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. 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 (10)
1. Shield constructs stagnant water sealing device at portal which characterized in that includes:
the rubber curtain cloth plate (11) is arranged in a ring shape;
the steel wire brush (12) is arranged in a ring shape coaxial with the rubber curtain cloth plate (11);
the rubber curtain cloth plate (11) and the steel wire brush (12) are sequentially arranged along a first direction, and the steel wire brush (12) can be pressed against the rubber curtain cloth plate under the action of external force.
2. The water-stopping sealing device for the shield tunnel portal according to claim 1, wherein the number of the steel wire brushes (12) is two, a sealing cavity is formed between the two steel wire brushes (12), and grease can be filled in the sealing cavity.
3. The water-stop sealing device for the shield tunnel portal according to claim 2, wherein the axial section of the steel wire brush is annular, two steel wire brushes (12) are connected with each other to form an infinity shape, and a grease injection hole (121) is formed at the joint of the infinity structure.
4. The water-stop sealing device of the shield tunnel portal according to claim 1, further comprising a packing sealing assembly (13), wherein the packing sealing assembly (13) is configured to be arranged on one side of the rubber curtain cloth plate (11) and the steel wire brush (12) far away from the tunnel portal (2).
5. The water-stop sealing device for the shield tunnel portal according to claim 4, wherein the packing seal assembly (13) comprises a bottom plate (131), a pressing plate (132) and a sealing packing (133), the bottom plate (131), the pressing plate (132) and the sealing packing (133) are all in a ring shape, the bottom plate (131) and the pressing plate (132) are arranged at intervals in the axial direction of the water-stop sealing device and form a clamping area, the sealing packing (133) is located in the clamping area, and the size of a gap of the clamping area is adjustable and can be used for limiting, locking and extruding the sealing packing (133).
6. The shield tunnel portal water-stop sealing device according to claim 5, wherein the bottom plate (131) further comprises an annular limit connecting part (131 a), and the limit connecting part (131 a) is attached to the outer peripheral side of the sealing filler (133) and can limit the deformation of the outer peripheral side of the sealing filler (133).
7. The water-stop sealing device for the shield tunnel portal according to claim 5, wherein the packing seal assembly (13) further comprises an annular gland (134), the gland (134) is screwed on the bottom plate (131), and the gland (134) is abutted with the pressure plate (132).
8. The water-stopping sealing device of the shield tunnel portal according to claim 1, further comprising an extension steel ring (15), wherein the steel wire brush (12) is installed on the inner wall of the extension steel ring (15), and the rubber curtain cloth plate (11) is arranged on the end face of the extension steel ring (15).
9. The water-stopping sealing device of the shield tunnel door according to claim 1, further comprising a folding flap (14), wherein the folding flap (14) is arranged on one side of the rubber curtain cloth plate (11) facing away from the steel wire brush (12).
10. The water-stopping sealing device for the shield tunnel portal according to claim 1, wherein a protruding part is arranged at the tail part of one end of the rubber curtain cloth plate (11) jointed with the steel wire brush (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211145764.0A CN115306453A (en) | 2022-09-20 | 2022-09-20 | Water-stopping sealing device for shield tunnel portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211145764.0A CN115306453A (en) | 2022-09-20 | 2022-09-20 | Water-stopping sealing device for shield tunnel portal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115306453A true CN115306453A (en) | 2022-11-08 |
Family
ID=83866719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211145764.0A Pending CN115306453A (en) | 2022-09-20 | 2022-09-20 | Water-stopping sealing device for shield tunnel portal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115306453A (en) |
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2022
- 2022-09-20 CN CN202211145764.0A patent/CN115306453A/en active Pending
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