CN219774131U - Sectional indwelling type shield tunnel portal sealing device - Google Patents
Sectional indwelling type shield tunnel portal sealing device Download PDFInfo
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- CN219774131U CN219774131U CN202320857789.7U CN202320857789U CN219774131U CN 219774131 U CN219774131 U CN 219774131U CN 202320857789 U CN202320857789 U CN 202320857789U CN 219774131 U CN219774131 U CN 219774131U
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- steel ring
- ring
- steel
- shield
- tunnel portal
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- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 154
- 239000010959 steel Substances 0.000 claims abstract description 154
- 239000004744 fabric Substances 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 15
- 230000014759 maintenance of location Effects 0.000 claims description 9
- 239000004519 grease Substances 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 6
- 239000004576 sand Substances 0.000 abstract description 6
- 230000000977 initiatory effect Effects 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a segmented indwelling type shield tunnel portal sealing device, which comprises an embedded steel ring, wherein the embedded steel ring is arranged along the circumferential direction of a lining wall and is L-shaped in cross section, the embedded steel ring is connected with a first steel ring, the first steel ring is connected with a second steel ring, the first steel ring and the second steel ring are respectively provided with a first grouting hole and a second grouting hole, and the second steel ring is connected with a rubber curtain cloth and a rolling shutter plate; the inner sides of the first steel ring and the embedded steel ring are respectively provided with a sealing brush in a circumferential direction, the sealing brush, the rubber curtain cloth and the rolling shutter are all in butt joint with the outer sides of the ring shield segments, and the contact ends of the sealing brush, the rubber curtain cloth, the rolling shutter and the ring shield segments incline towards the inside of the holes relative to the respective connection ends. According to the segmented indwelling type shield tunnel portal sealing device disclosed by the utility model, through the multi-channel waterproof device, higher safety of shield initiation in a water-rich sand layer can be ensured, and meanwhile, the rubber curtain cloth is far away from the enclosure structure in the construction stage, so that the rubber curtain cloth is prevented from being damaged when a shield machine passes through the enclosure structure.
Description
Technical Field
The utility model belongs to the technical field of building construction, and particularly relates to a sealing device for a segmented indwelling shield tunnel portal.
Background
At present, shield initiation in a water-rich sand layer is a heavy difficulty of shield construction, and how to stop water is a key of shield initiation in the water-rich stratum, if a tunnel portal water seepage path cannot be effectively plugged, tunnel portal water and sand are easily caused, so that surrounding stratum is driven to subside, and serious people even possibly cause whole earth surface collapse, so that great economic loss and great social influence are caused.
In order to solve the problems, the utility model aims to ensure the effectiveness and the safety of sealing the tunnel portal by the common tunnel portal sealing water stopping measure when the shield is started to be positioned in the water-rich sand layer or the pebble layer, and can ensure the water stopping effect at the periphery of the tunnel portal to the greatest extent, thereby providing safety guarantee for the shield process, and simultaneously keeping the rubber curtain apart from the enclosure structure to avoid damaging the rubber curtain when the shield machine passes through the enclosure structure.
Disclosure of Invention
The utility model provides a segmented retention type shield tunnel portal sealing device aiming at the defects of the prior art, so as to solve the problem of tunnel portal sealing water stop in the shield launching process.
The utility model realizes the aim through the following technical scheme:
the utility model provides a section is kept somewhere formula shield tunnel portal sealing device, includes the pre-buried steel ring that arranges along inside lining wall hoop, pre-buried steel ring's cross section is L shape, pre-buried steel ring is connected with first steel ring, first steel ring is connected with the second steel ring, first steel ring and second steel ring are equipped with first slip casting hole and second slip casting hole respectively, the second steel ring is connected with rubber curtain cloth and rolls up curtain board;
the first steel ring and the inner side of the embedded steel ring are respectively and annularly provided with a sealing brush, the rubber curtain cloth and the rolling shutter turning plate are all in butt joint with the outer side of the ring shield segment, and the contact ends of the sealing brush, the rubber curtain cloth and the rolling shutter turning plate and the ring shield segment incline towards the inside of the hole relative to the respective connecting ends.
Further, the first steel ring is connected with the second steel ring, the second steel ring is connected with the rubber curtain cloth and the rolling shutter turning plate through bolts, and the circumferential distance of the bolts is 5 degrees.
Further, rib plates are welded on the second steel ring, and the circumferential spacing of the rib plates is 10 degrees.
Further, the number of the first grouting holes and the second grouting holes is 8, and the first grouting holes and the second grouting holes are uniformly distributed along the annular direction of the door.
Further, the ring shield segment comprises a ring shield segment A and a ring shield segment B connected with the ring shield segment A, a back-coated steel plate is arranged on the outer side of the ring shield segment B, and a part of the back-coated steel plate protrudes towards one end of the tunnel portal relative to the first steel ring.
Further, grease material is filled between the two sealing brushes.
In addition to the scheme, the utility model also provides another technical scheme:
the utility model provides a segmentation is kept somewhere formula shield tunnel portal sealing device, includes the pre-buried steel loop of following inside lining wall hoop arrangement, pre-buried steel loop's cross section is L shape, pre-buried steel loop is connected with first steel loop, be equipped with first slip casting hole in the middle of the first steel loop, first steel loop with pre-buried steel loop inboard has arranged the sealing brush in the hoop respectively, sealing brush and the outside butt of ring shield segment B, sealing brush and ring shield segment B outside contact end are relative sealing brush with first steel loop, pre-buried steel loop's link slopes towards in the hole;
the outside of the ring shield segment B is provided with a back-coated steel plate, one end of the back-coated steel plate, which faces the hole, is partially protruded relative to the first steel ring, the back-coated steel plate is connected with an arc steel plate, the other end of the arc steel plate is connected with the first steel ring, the arc steel plate is provided with a grouting ball valve, grease materials are filled between two sealing brushes, and grouting materials are filled between the arc steel plate and the sealing brushes.
Further, the arc steel plate is welded with the first steel ring and the back-coated steel plate.
Furthermore, the circular arc steel plate is uniformly provided with 4 grouting ball valves in the circumferential direction.
Further, the first steel ring is provided with a portal ring beam towards the portal side, and the portal ring beam and the first steel ring are poured into a whole.
Compared with the prior art, the utility model has the following beneficial effects:
1. through the multichannel watertight fittings, can ensure to shield and originate in the water-rich sand layer has higher security.
2. The rubber curtain cloth is far away from the enclosure structure, so that the rubber curtain cloth is prevented from being damaged when the shield machine passes through the enclosure structure.
3. By placing the first steel ring and the shield tunnel portal ring beam together, the risk of detaching the tunnel portal steel ring during construction of the shield tunnel portal ring beam is reduced, and the safety during detaching the shield tunnel portal steel ring is ensured.
Drawings
FIG. 1 is a top cross-sectional view of a first embodiment of the utility model;
fig. 2 is a top cross-sectional view of a second embodiment of the present utility model.
The components in the figures are labeled as follows:
the novel grouting material comprises the following components of a 1-ring shield segment A, a 2-ring shield segment B, a 3-lining wall, a 4-enclosure structure, a 5-embedded steel ring, a 6-rolling shutter turning plate, 7-rubber curtain cloth, 8-sealing brushes, 9-bolts, 10-first grouting holes, 11-rib plates, 12-second grouting holes, 13-first steel rings, 14-second steel rings, 15-back steel plates, 16-circular arc steel plates, 17-grouting ball valves, 18-portal ring beams, 19-grouting materials and 20-grease materials.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
Example 1
A first embodiment of the present utility model will be described with reference to fig. 1 with respect to a seal device for a segmented retaining type shield tunnel portal.
As shown in figure 1, the sectional indwelling type shield tunnel portal sealing device is characterized in that an embedded steel ring 5 is arranged along an inner lining wall 3, the section of the embedded steel ring 5 is L-shaped and is propped against an enclosure structure 4, the embedded steel ring 5 is connected with a first steel ring 13 with the length of 200mm, the first steel ring 13 is connected with a second steel ring 14 with the length of 400mm, the second steel ring 14 is connected with a rubber curtain cloth 7 with the length of 530mm and a rolling shutter plate 6 with the thickness of 10mm and the length of 360mm, the first steel ring 13 is connected with the embedded steel ring 5 and the second steel ring 14 by M24 bolts 9, the rolling shutter plate 6, the rubber curtain cloth 7 and the second steel ring 14 are convenient to assemble and disassemble, and the annular distance between the bolts 9 is 5 degrees. Two sealing brushes 8 are fixed on the inner sides of the first steel ring 13 and the embedded steel ring 5, and the rolling shutter turning plate 6, the rubber rolling shutter 7 and the sealing brushes 8 are abutted against the ring shield segments and incline towards the inside of the holes relative to the fixed ends of the sealing brushes. In order to ensure the stability of the second steel ring 14, rib plates 11 with the thickness of 10mm are adopted for reinforcement, the circumferential spacing is 10 degrees, and the rib plates 11 are connected with the second steel ring 14 by welding seams with the thickness of not less than 8 mm. The first steel ring 13 and the second steel ring 14 are respectively and uniformly provided with 8 first grouting holes 10 and second grouting holes 12 along the annular direction of the tunnel portal. The ring shield segment B2 protrudes towards the direction of the hole by 100mm relative to the first steel ring 13, a back-covered steel plate 15 is arranged on the outer side of the ring shield segment B2, the back-covered steel plate 15 also protrudes towards the direction of the hole relative to the first steel ring 13, and the ring shield segment B is externally connected with an extended ring shield segment A1. The rolling shutter turning plate 6, the rubber curtain 7 and the second steel ring 14 can be disassembled and reused, so that the construction cost is reduced.
When the shield construction is tunneled and assembled to the 5 th ring shield segment away from the hole, the 2 nd ring shield segment and the 3 rd ring shield segment drag out the tail of the shield, at the moment, grease materials 20 are injected between the two sealing brushes 8 through the first grouting holes 10, grouting materials 19 such as cement paste are injected through the second grouting holes 12, and gaps between the ring shield segment and the steel ring of the hole are blocked. And when the shield is tunneled to the 8 th ring shield segment which is away from the hole, hoop grouting is carried out on the inside of the 2 nd to 5 th ring shield segments, and the grouting is utilized again to block the gap between the segment and the hole gate.
Example two
A second embodiment of the present utility model will be described with reference to fig. 2.
When the construction of the portal ring beam is carried out, the first grouting holes 10 and the second grouting holes 12 are opened first to check the back grouting condition, and secondary grouting is carried out if necessary, so that the steel ring is ensured to be dismantled under the condition of no water leakage and sand leakage. And then the second steel ring 14, the rolling shutter turning plate 6 and the rubber curtain cloth 7 are removed in a segmented mode according to the circumferential direction of 20 degrees, dregs between the first steel ring 13 and the ring shield segment A1 are rapidly removed, the first steel ring 13 is welded with a back-coated steel plate 15 on the outer side of the ring shield segment B2 by using a circular arc steel plate 16 with the thickness of 5mm immediately, and 4 grouting ball valves 17 are uniformly arranged on the circular arc steel plate 16 along the periphery of a tunnel portal. After the arc steel plate 16 is welded and sealed, the tissue immediately performs proper secondary grouting on the ring shield segment in the hole, and the gap between the reinforcing area and the ring shield segment is blocked. And then removing the ring shield segment A1, constructing the portal ring beam 18, and pouring the first steel ring 13 and the portal ring beam 18 into a whole.
As shown in fig. 2, a sealing device for a segmented indwelling shield tunnel portal is characterized in that an embedded steel ring 5 is arranged along a lining wall 3, the cross section of the sealing device is L-shaped and is propped against an enclosure structure 4, the embedded steel ring 5 is connected with a first steel ring 13 with the length of 200mm, the first steel ring 13 is connected with an embedded steel plate 5 through M24 bolts 9, and the annular distance between the bolts 9 is 5 degrees. Two sealing brushes 8 are fixed on the inner sides of the first steel ring 13 and the embedded steel ring 5, and the sealing brushes 8 are abutted with the ring shield segments and incline towards the inside of the hole relative to the fixed end. The first steel rings 13 are uniformly provided with 8 first grouting holes 10 along the annular direction of the door. The ring shield segment B2 protrudes towards the direction of the hole by 100mm relative to the first steel ring 13, a back-coated steel plate 15 is arranged on the outer side of the ring shield segment B2, the back-coated steel plate 15 protrudes towards the direction of the hole relative to the first steel ring 13, a 5mm thick arc steel plate 16 is welded and connected with the back-coated steel plate 15 on the outer side of the first steel ring 13 and the ring shield segment B2 respectively, and 4 grouting ball valves 17 are arranged on the arc steel plate 16 along the circumferential direction of the hole. A filled grease material 20 is arranged between the two sealing brushes 8, and a filled grouting material 19 such as cement paste is arranged between the circular arc steel plate 16 and the sealing brushes 8. The first steel ring 13 is provided with a portal ring beam 18 towards the side of the portal, and the first steel ring 13 and the portal ring beam 18 are poured into a whole.
In the description of this specification, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (10)
1. The utility model provides a section is kept somewhere formula shield tunnel portal sealing device which characterized in that: the embedded steel ring (5) is arranged along the circumferential direction of the lining wall (3), the cross section of the embedded steel ring (5) is L-shaped, the embedded steel ring (5) is connected with a first steel ring (13), the first steel ring (13) is connected with a second steel ring (14), the first steel ring (13) and the second steel ring (14) are respectively provided with a first grouting hole (10) and a second grouting hole (12), and the second steel ring (14) is connected with a rubber curtain cloth (7) and a rolling shutter plate (6);
the sealing brush (8) is annularly arranged on the inner side of the first steel ring (13) and the inner side of the embedded steel ring (5), the sealing brush (8) is in contact with the outer side of the ring shield segment by the aid of the rubber curtain cloth (7) and the rolling shutter turning plate (6), and the sealing brush (8) is in contact with the rubber curtain cloth (7) and the rolling shutter turning plate (6) and the contact ends of the ring shield segment are inclined towards the inside of the hole relative to the respective connecting ends.
2. The segmented retention shield tunnel portal sealing device of claim 1, wherein: the first steel ring (13) is connected with the second steel ring (14), the second steel ring (14) is connected with the rubber curtain cloth (7) and the rolling shutter turning plate (6) through bolts, and the circumferential distance between the bolts (9) is 5 degrees.
3. The segmented retention shield tunnel portal sealing device of claim 1, wherein: the second steel ring (14) is welded with rib plates (11), and the circumferential spacing of the rib plates (11) is 10 degrees.
4. The segmented retention shield tunnel portal sealing device of claim 1, wherein: the number of the first grouting holes (10) and the second grouting holes (12) is 8, and the first grouting holes and the second grouting holes are uniformly distributed along the annular direction of the door.
5. The segmented retention shield tunnel portal sealing device of claim 1, wherein: the ring shield segment comprises a ring shield segment A (1) and a ring shield segment B (2) connected with the ring shield segment A (1), a back-covered steel plate (15) is arranged on the outer side of the ring shield segment B (2), and part of the back-covered steel plate (15) protrudes towards one end of the tunnel portal relative to the first steel ring (13).
6. The segmented retention shield tunnel portal sealing device of claim 1, wherein: and a grease material (20) is filled between the two sealing brushes (8).
7. The utility model provides a section is kept somewhere formula shield tunnel portal sealing device which characterized in that: the embedded steel ring (5) is arranged along the annular direction of the lining wall (3), the cross section of the embedded steel ring (5) is L-shaped, the embedded steel ring (5) is connected with a first steel ring (13), a first grouting hole (10) is formed in the middle of the first steel ring (13), sealing brushes (8) are respectively arranged on the inner sides of the first steel ring (13) and the embedded steel ring (5) in an annular direction, the sealing brushes (8) are abutted to the outer sides of ring shield segments B (2), and the contact ends of the sealing brushes (8) and the outer sides of the ring shield segments B are inclined towards the inside of a hole relative to the sealing brushes (8) and the connection ends of the first steel ring (13) and the embedded steel ring (5);
the circular shield constructs section of jurisdiction B (2) outside has back of body to cover steel sheet (15), back of body cover steel sheet (15) towards entrance to a cave one end for first steel ring (13) leave partial protrusion, back of body covers steel sheet (15) and is connected with circular arc steel sheet (16), circular arc steel sheet (16) other end with first steel ring (13) are connected, circular arc steel sheet (16) are equipped with slip casting ball valve (17), twice fill grease material (20) between sealing brush (8), circular arc steel sheet (16) with fill slip casting material (19) between sealing brush (8).
8. The segmented retention shield tunnel portal sealing device of claim 7, wherein: the arc steel plate (16) is welded with the first steel ring (13) and the back steel plate (15).
9. The segmented retention shield tunnel portal sealing device of claim 7, wherein: the circular arc steel plate (16) is uniformly provided with 4 grouting ball valves (17) in the circumferential direction.
10. A segmented retention type shield tunnel portal sealing device according to any one of claims 7-9, wherein: the first steel ring (13) is provided with a portal ring beam (18) towards the portal side, and the portal ring beam (18) and the first steel ring (13) are poured into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320857789.7U CN219774131U (en) | 2023-04-18 | 2023-04-18 | Sectional indwelling type shield tunnel portal sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320857789.7U CN219774131U (en) | 2023-04-18 | 2023-04-18 | Sectional indwelling type shield tunnel portal sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219774131U true CN219774131U (en) | 2023-09-29 |
Family
ID=88108862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320857789.7U Active CN219774131U (en) | 2023-04-18 | 2023-04-18 | Sectional indwelling type shield tunnel portal sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219774131U (en) |
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2023
- 2023-04-18 CN CN202320857789.7U patent/CN219774131U/en active Active
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