CN212508314U - Shield tail plugging device in shield construction - Google Patents
Shield tail plugging device in shield construction Download PDFInfo
- Publication number
- CN212508314U CN212508314U CN201922311909.XU CN201922311909U CN212508314U CN 212508314 U CN212508314 U CN 212508314U CN 201922311909 U CN201922311909 U CN 201922311909U CN 212508314 U CN212508314 U CN 212508314U
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- shield
- water
- water stop
- ring
- tail
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Abstract
A shield tail plugging device in shield construction comprises a shield tail of a shield machine and a shield segment, wherein a water stop ring is arranged at the tail end of the shield segment, the cross section of the water stop ring is L-shaped, and two sides of the inner side of the water stop ring are respectively coated at the tail end of the shield segment and the inner side of the shield segment; water-stopping rubber is arranged on two sides of the inner side of the water-stopping ring, and a pushing oil cylinder capable of pushing the water-stopping ring to the tail end of the shield segment and a pushing oil cylinder capable of pushing the water-stopping ring outwards are arranged on two sides of the outer side of the water-stopping ring; a plurality of grouting ports are formed in the water stop ring and used for injecting polyurethane water stop and injecting double-liquid slurry for backfilling. The utility model discloses when the shield tail leaks, can carry out the full ring shutoff fast to backfill the department of leaking, ensure no longer to leak, have simple structure, convenient operation's advantage, can effectively improve the security when the shield constructs the construction, reduce the loss that the shield tail leaked and caused, be favorable to the development of china's shield construction technique.
Description
Technical Field
The utility model relates to a carry out the device of leaking stoppage when leaking, specific saying so one kind is arranged in the shield tunnel construction, when the shield tail leaks, can quick leaking stoppage device.
Background
In shield construction, shield tail water leakage is easily caused due to failure of the shield tail brush, and shield tail grease can be filled and polyurethane can be filled for plugging when small water leakage occurs. When the shield machine is in a water-rich section and the shield tail brush deforms to a certain degree, injected polyurethane can be taken away quickly along with gushed water, and the water blocking effect can not be achieved through foaming. At the moment, the water flow channel needs to be plugged firstly, and the conventional plugging method can only be used for local plugging. Because the shield tail and the duct piece are circumferential channels, other water leakage channels can be formed after local plugging.
Disclosure of Invention
An object of the utility model is to the defect and not enough of above-mentioned prior art, provide a shield tail plugging device that can carry out the full ring shutoff fast when the shield tail leaks for people.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the shield tail leakage stopping device in shield construction comprises a shield tail of a shield machine and a shield segment, wherein a water stopping ring is arranged at the tail end of the shield segment, the cross section of the water stopping ring is L-shaped, and two sides of the inner side of the water stopping ring are respectively coated at the tail end of the shield segment and the inner side of the shield segment; water-stopping rubber is arranged on two sides of the inner side of the water-stopping ring, and a pushing oil cylinder capable of pushing the water-stopping ring to the tail end of the shield segment and a pushing oil cylinder capable of pushing the water-stopping ring outwards are arranged on two sides of the outer side of the water-stopping ring; a plurality of grouting ports are formed in the water stop ring and used for injecting polyurethane water stop and injecting double-liquid slurry for backfilling.
The water stop ring consists of six annularly and uniformly distributed water stop strips, and two adjacent water stop strips are connected through a connector and a bolt.
And a sealing gasket is arranged at the joint of the two adjacent water stop bars.
The middle of the shield tail is provided with a connector, and the pushing oil cylinders are all arranged on the connector.
The pushing oil cylinder is installed on the connector in a radiation mode.
The utility model discloses when the shield tail leaks, can carry out the full ring shutoff fast to backfill the department of leaking, ensure no longer to leak, have simple structure, convenient operation's advantage, can effectively improve the security when the shield constructs the construction, reduce the loss that the shield tail leaked and caused, be favorable to the development of china's shield construction technique.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the outside structural schematic diagram of the water stop ring of the present invention.
Fig. 3 is a schematic diagram of the inner side structure of the water stop ring of the present invention.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, the utility model relates to a shield tail plugging device in shield construction, it includes shield tail 1 and the shield of shield structure machine section of jurisdiction 2, the end of shield structure section of jurisdiction 2 be provided with seal ring 3, this seal ring 3 cross-section is the L type, its inboard both sides cladding respectively in the end of shield structure section of jurisdiction 2 and the inboard of shield structure section of jurisdiction 2. And the two sides of the inner side of the water stop ring 3 are provided with water stop rubbers 4, and the two sides of the outer side of the water stop ring 3 are provided with a pushing oil cylinder 5 capable of pushing the water stop ring 3 to the tail end of the shield segment 2 and a pushing oil cylinder 6 capable of pushing the water stop ring 3 outwards. The propulsion oil cylinder 5 is fixed with the shield tail 2 and can propel the water stop ring 3 to the tail end of the shield segment 2. The water stopping rubber 4 can fill the gap between the water stopping ring 3 and the shield segment 2 after being extruded and deformed to achieve the function of water stopping. The water stop ring 3 consists of six annularly and uniformly distributed water stop strips 3.1, and two adjacent water stop strips 3.1 are connected through a connector 3.2 and a bolt 3.3. The pushing oil cylinder 6 is installed on the connector 8 in a radiation mode, the water stop strip 3.1 is pushed outwards, and the inner side face of the water stop strip 3.1 is made to be attached to the shield segment 2. And a sealing gasket 3.4 is arranged at the joint of the two adjacent water stop strips 3.1 to prevent the joint from leaking water.
A plurality of grouting openings 7 are formed in the water stop ring 3, polyurethane can be injected into the grouting openings 7, and leakage points can be blocked after polyurethane foaming. After the leakage point is blocked, double-slurry is injected to the direction of the leakage point for backfilling, namely, the water glass and the calcium chloride solution are alternately injected into the shield tail 1, the two solutions react rapidly to generate silica gel and calcium silicate gel, the functions of cementing and filling pores are achieved, and the strength and the bearing capacity of the shield tail 1 are improved.
The utility model discloses when shield tail 1 leaks, can carry out the full ring shutoff fast to backfill the department of leaking, ensure no longer to leak, have simple structure, convenient operation's advantage, can effectively improve the security when the shield constructs the construction, reduce the loss that shield tail 1 leaked and caused, be favorable to the development of china's shield construction technique.
Claims (5)
1. A shield tail plugging device in shield construction comprises a shield tail (1) of a shield machine and a shield segment (2), and is characterized in that a water stop ring (3) is arranged at the tail end of the shield segment (2), the section of the water stop ring (3) is L-shaped, and two sides of the inner side of the water stop ring are respectively coated at the tail end of the shield segment (2) and the inner side of the shield segment (2); water-stopping rubber (4) is arranged on two sides of the inner side of the water-stopping ring (3), and a pushing oil cylinder (5) capable of pushing the water-stopping ring (3) to the tail end of the shield segment (2) and a pushing oil cylinder (6) capable of pushing the water-stopping ring (3) outwards are arranged on two sides of the outer side of the water-stopping ring (3); and a plurality of grouting ports (7) are formed in the water stop ring (3) and are used for injecting polyurethane water stop and injecting double-liquid slurry for backfilling.
2. The shield tail plugging device in shield construction according to claim 1, wherein the water stop ring (3) is composed of six annularly and uniformly distributed water stop strips (3.1), and two adjacent water stop strips (3.1) are connected through a connector (3.2) and a bolt (3.3).
3. The shield tail plugging device in shield construction according to claim 2, wherein a sealing gasket (3.4) is arranged at the joint of two adjacent water stop strips (3.1).
4. The shield tail plugging device in shield construction according to claim 1, 2 or 3, wherein a connector (8) is arranged in the middle of the shield tail (1), and the jacking cylinders (6) are all mounted on the connector (8).
5. The shield tail plugging device in shield construction according to claim 4, wherein the jacking cylinder (6) is installed on the connector (8) in a radiation manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922311909.XU CN212508314U (en) | 2019-12-20 | 2019-12-20 | Shield tail plugging device in shield construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922311909.XU CN212508314U (en) | 2019-12-20 | 2019-12-20 | Shield tail plugging device in shield construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212508314U true CN212508314U (en) | 2021-02-09 |
Family
ID=74385873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922311909.XU Active CN212508314U (en) | 2019-12-20 | 2019-12-20 | Shield tail plugging device in shield construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212508314U (en) |
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2019
- 2019-12-20 CN CN201922311909.XU patent/CN212508314U/en active Active
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