CN209892242U - Tunnel portal emergency sealing water-stopping device of shield tunnel - Google Patents
Tunnel portal emergency sealing water-stopping device of shield tunnel Download PDFInfo
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- CN209892242U CN209892242U CN201920044936.2U CN201920044936U CN209892242U CN 209892242 U CN209892242 U CN 209892242U CN 201920044936 U CN201920044936 U CN 201920044936U CN 209892242 U CN209892242 U CN 209892242U
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- shield
- sealing water
- stopping device
- tunnel
- tunnel portal
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Abstract
The utility model discloses a tunnel portal emergency sealing water-stop device of a shield tunnel, which comprises an annular external member and an injection pipe which are pre-buried on a main body structure, wherein a shield machine passes through the inner annular soil body of the annular external member for tunneling; the annular external member includes the body, the embedding on the body major structure is provided with the opening orientation the recess of shield structure machine, orientation in the recess the shield structure machine is provided with the sack, the one end intercommunication of ascending pipe sets up in the recess, the other end of ascending pipe stretches out major structure is in order to connect outside grouting equipment. The emergency sealing water-stopping device for the tunnel portal can rapidly achieve a good water-stopping effect, and is simple in structure, low in cost and convenient to install.
Description
Technical Field
The utility model belongs to the technical field of the shield constructs the construction, concretely relates to shield tunnel's emergent sealing water stop device in portal.
Background
In the starting and receiving process of the shield, in order to prevent muddy water from entering a shield working well from an annular building gap formed by a tunnel portal ring and a shield shell in a large amount and influencing the muddy water pressure of the excavation surface of the shield machine, the stability of the soil body of the excavation surface and the construction in the shield, a sealing water stop piece with good performance is required to be arranged at the tunnel portal before the starting and receiving of the shield.
Although the existing rubber curtain cloth plate sealing element is simple in structure and easy to install, due to the fact that the overall performance of the rubber curtain cloth is relatively hard, a welding seam is formed on a shield machine object in the assembling and debugging process of the shield machine, the rubber curtain cloth which is lapped on the shield machine cannot form a seamless foundation with the shield machine object, a tiny water seepage channel is formed, and construction is inconvenient. In addition, after a period of use, the rubber curtain may be forced to fall off or torn, and the sealing may be failed.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a shield tunnel's emergent sealing water stop device in portal can realize good stagnant water effect fast, and simple structure, low cost, simple to operate.
The utility model adopts the following technical scheme:
the shield tunneling machine comprises an annular external member and an injection pipe which are pre-buried on a main body structure, wherein the shield tunneling machine penetrates through an inner annular soil body of the annular external member to tunnel;
the annular external member includes the body, the embedding on the body major structure is provided with the opening orientation the recess of shield structure machine, orientation in the recess the shield structure machine is provided with the sack, the one end intercommunication of ascending pipe sets up in the recess, the other end of ascending pipe stretches out major structure is in order to connect outside grouting equipment.
Further, the number of the injection pipes is not less than 4.
Furthermore, the groove is a rectangular groove with a rectangular longitudinal section.
Further, the size of the rectangular groove is 30cm by 30 cm.
Furthermore, the two ends of the body are connected with side plates, each side plate comprises a first side plate close to the foundation pit and a second side plate close to the soil body, and a rubber curtain water stopping device capable of extending into a gap between the annular sleeve and the shield tunneling machine is arranged on each second side plate.
Further, the rubber curtain water stopping device comprises a folding plate and one end of the rubber curtain cloth are fixedly connected to the second side plate through a connecting piece, and the other end of the folding plate extends into the gap and is in lap joint with the shield machine shell.
Further, the connecting structure is a bolt connecting piece.
Furthermore, grouting equipment for connecting the free end of the injection pipe is arranged outside the hole door.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an emergent sealing water stop device in entrance to a cave, when entrance to a cave department appear gushing water, gush critical situation such as sand, the accessible injection tube pours into foaming polyurethane and water into rapidly in the recess, can select wherein several to pour into apart from the nearest injection tube in water position among the this in-process, and remaining slip casting is then can be used to the atmospheric pressure of balanced filling process. The injected foamed polyurethane rapidly expands to form a foam through a curing reaction with air or water in contact therewith. The generated foaming body can be expanded continuously until the whole groove with the cloth bag is filled, the gap between the pre-annular external member and the shield machine shell is filled, polyurethane to be foamed is solidified to form an annular water stop ring, the annular water stop ring is tightly embedded between the shield and the annular external member, and the gap is blocked, so that water, mud and sand can be prevented from flowing into the gap effectively.
This emergent sealing water stop device in hole door provides the product institute of solidification for foaming polyurethane through setting up the recess, reduces the loss of foaming polyurethane filling in-process. Meanwhile, the cloth bag is arranged in the groove, and the cloth bag is wrapped after the foaming polyurethane is filled, so that on one hand, a product for curing the foaming polyurethane is provided, and the loss in the curing process is reduced; on the other hand, the cloth bag can also enhance the strength of the solidified foamed polyurethane. The emergency sealing water-stopping device for the tunnel portal is simple in structure and convenient to operate, and can rapidly treat water leakage and sand leakage under emergency conditions.
Drawings
The technology of the present invention will be further described in detail with reference to the accompanying drawings and detailed description:
fig. 1 is a schematic view of the emergency sealing and water stopping device for tunnel portal according to the present invention;
FIG. 2 is a schematic view of plane A-A;
FIG. 3 is a schematic diagram of the emergency sealing and water stopping device for the tunnel door after injecting foamed polyurethane in an emergency state;
fig. 4 is a schematic structural diagram of the rubber curtain water stopping device of the present invention after installation.
Description of the labeling:
1. a body structure; 2. a shield machine; 3. a ring-shaped sleeve member; 31. a first side plate; 32. a second side plate; 33. a body; 34. a groove; 4. a cloth bag; 5. an injection pipe; 6. a rubber curtain water stopping device; 61. a folding plate; 62. rubber cord fabric; 63. a connecting structure; 7. a foamed polyurethane;
in FIG. 3
Indicating the direction of the mud flow.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
The utility model discloses a tunnel portal emergency sealing water-stopping device of a shield tunnel, as shown in figures 1-4,
the shield tunneling machine comprises an annular external member 3 and an injection pipe 5 which are pre-buried on a main body structure 1, wherein the shield tunneling machine 2 penetrates through the inner ring of the annular external member 3 and tunnels towards a soil body;
annular external member 3 includes body 33, embedding on the body 33 major structure 1 is provided with the opening orientation the recess 34 of shield structure machine 2, the orientation is provided with cloth bag 4 in the recess 34 the shield structure machine, the one end intercommunication of filling tube 5 sets up in the recess 34, the other end of filling tube 5 stretches out major structure 1 is in order to connect outside grouting equipment. When water leakage occurs, water leakage can be avoided
Wherein, the groove 34 is a rectangular groove 34 with a rectangular longitudinal section. The rectangular recess 34 has a dimension of 30cm by 30 cm.
The cloth bag 4 is made of high-strength fibers, is annular, has the diameter of 500mm, and is annularly and orderly stacked along the groove 34.
Based on above-mentioned structural design, when the critical conditions such as gushing water, gushing sand appear in portal department, accessible injection pipe 5 injects foaming polyurethane 7 and water into recess 34 rapidly, can select wherein several injection pipes 5 that are nearest apart from water position to fill among the process, and remaining slip casting then can be used to the atmospheric pressure of balanced filling process. The injected foamed polyurethane 7 is rapidly expanded to be cured and reacted with air or water in contact therewith to form a foam. The generated foaming body can be expanded continuously until the whole groove 34 provided with the cloth bag 4 is filled, the gap between the pre-annular external member 3 and the shell of the shield machine 2 is filled, the polyurethane 7 to be foamed is solidified to form an annular water stop ring, the annular water stop ring is tightly embedded between the shield machine and the annular external member 3, the gap is blocked, and water, mud and sand can be effectively prevented from flowing into the gap. When no water leakage occurs, the cloth bag 4 is only stacked in the groove 34 without injecting the foaming polyurethane 7.
This emergent sealing water stop device in hole door is through setting up recess 34, for foaming polyurethane 7 provides the product of solidification, reduces the loss of foaming polyurethane 7 filling in-process. Meanwhile, the cloth bag 4 is arranged in the groove 34, and the cloth bag 4 is wrapped by the filled foamed polyurethane 7, so that on one hand, the product of curing the foamed polyurethane 7 is provided, and the loss in the curing process is reduced; on the other hand, the cloth bag 4 can also reinforce the strength of the foamed polyurethane 7 after curing. The emergency sealing water-stopping device for the tunnel portal is simple in structure and convenient to operate, and can rapidly treat water leakage and sand leakage under emergency conditions.
In the above embodiment, as shown in fig. 1 to 4, the number of the injection pipes 5 is not less than 4. In one embodiment, the number of injection pipes 5 is set to 6. And a grouting device for connecting the free end of the injection pipe 5 is arranged outside the tunnel door. During emergency treatment, 3 injections can be selected, and the remaining 3 injections can be used to balance the air pressure.
In the above embodiment, as shown in fig. 1 to 4, the two ends of the main body 33 are connected with side plates, the side plates include a first side plate 31 adjacent to the foundation pit and a second side plate 32 adjacent to the soil body, and the second side plate 32 is provided with a rubber curtain water stopping device 6 capable of extending into a gap between the annular sleeve 3 and the shield tunneling machine 2.
Rubber curtain watertight fittings 6 includes folded plate 61, rubber curtain 62 and connection structure 63, folded plate 61 passes through with the one end of rubber curtain 62 the connecting piece rigid coupling in on the second curb plate 32, the other end stretches into in the space and with the casing overlap joint of shield structure machine 2.
In order to facilitate the assembly, disassembly and replacement of the rubber curtain water stopping device 6, the connecting structure 63 is a bolt connecting piece.
Other contents of the emergent sealing water stop device in shield tunnel's portal see prior art, no longer describe herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a shield tunnel's emergent sealing water stop device in portal which characterized in that:
the shield tunneling machine comprises an annular external member and an injection pipe which are pre-buried on a main body structure, wherein the shield tunneling machine penetrates through an inner annular soil body of the annular external member to tunnel;
the annular external member includes the body, the embedding on the body major structure is provided with the opening orientation the recess of shield structure machine, orientation in the recess the shield structure machine is provided with the sack, the one end intercommunication of ascending pipe sets up in the recess, the other end of ascending pipe stretches out major structure is in order to connect outside grouting equipment.
2. The emergency sealing water-stopping device for tunnel portal according to claim 1, wherein: the number of the injection pipes is not less than 4.
3. The emergency sealing water-stopping device for tunnel portal according to claim 1, wherein: the groove is a rectangular groove with a rectangular longitudinal section.
4. The emergency sealing water-stopping device for tunnel portal according to claim 3, wherein: the size of the rectangular groove is 30cm by 30 cm.
5. The emergency sealing water-stopping device for tunnel portal according to claim 1, wherein: the two ends of the body are connected with side plates, each side plate comprises a first side plate close to the foundation pit and a second side plate close to the soil body, and a rubber curtain water stopping device capable of extending into a gap between the annular sleeve and the shield tunneling machine is arranged on each second side plate.
6. The emergency sealing water-stopping device for tunnel portal according to claim 5, wherein: the rubber curtain water stop device comprises a folding plate, a rubber curtain cloth and a connecting structure, wherein the folding plate is fixedly connected with one end of the rubber curtain cloth through the connecting structure and fixedly connected to the second side plate, and the other end of the folding plate extends into the gap and is in lap joint with the shield machine shell.
7. The emergency sealing water-stopping device for tunnel portal according to claim 6, wherein: the connecting structure is a bolt connecting piece.
8. The emergency sealing water-stopping device for tunnel portal according to claim 1, wherein: and grouting equipment for connecting the free end of the injection pipe is arranged outside the hole door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920044936.2U CN209892242U (en) | 2019-01-10 | 2019-01-10 | Tunnel portal emergency sealing water-stopping device of shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920044936.2U CN209892242U (en) | 2019-01-10 | 2019-01-10 | Tunnel portal emergency sealing water-stopping device of shield tunnel |
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| Publication Number | Publication Date |
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| CN209892242U true CN209892242U (en) | 2020-01-03 |
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| CN201920044936.2U Active CN209892242U (en) | 2019-01-10 | 2019-01-10 | Tunnel portal emergency sealing water-stopping device of shield tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922612A (en) * | 2021-03-02 | 2021-06-08 | 北京建工土木工程有限公司 | Shield tunneling machine starting tunnel portal sealing and water stopping device and construction method thereof |
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2019
- 2019-01-10 CN CN201920044936.2U patent/CN209892242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922612A (en) * | 2021-03-02 | 2021-06-08 | 北京建工土木工程有限公司 | Shield tunneling machine starting tunnel portal sealing and water stopping device and construction method thereof |
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