CN216894422U - Rich water stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures - Google Patents

Rich water stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures Download PDF

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Publication number
CN216894422U
CN216894422U CN202220734904.7U CN202220734904U CN216894422U CN 216894422 U CN216894422 U CN 216894422U CN 202220734904 U CN202220734904 U CN 202220734904U CN 216894422 U CN216894422 U CN 216894422U
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plugging
point
protective layer
elevation
water
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CN202220734904.7U
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郭宇航
李朝成
段武全
魏辉
刘军
吕岩
闫明
乔文件
蔡龙
李娴
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Fifth Engineering Co Ltd of China Railway 20th Bureau Group Co Ltd
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Fifth Engineering Co Ltd of China Railway 20th Bureau Group Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

The utility model discloses a water-rich stratum shield segment circumferential seam leaking stoppage construction structure which comprises a protective layer assembly and a plugging timber pile; the protective layer assembly comprises a cement mortar protective layer and an epoxy resin layer, wherein the cement mortar protective layer is arranged on the inner side of the shield segment and arranged between an elevation plugging point and a low-lift plugging point, the epoxy resin layer is arranged on the outer side of the cement mortar protective layer, and an exhaust hole is formed in the cement mortar protective layer. According to the utility model, the cement mortar protective layer is arranged to perform early plugging on the area where the leakage point is located, the end part of the area where the leakage point is located is plugged by using the plugging timber pile, and finally, the epoxy resin layer is combined to perform internal filling, so that the sealing effect is achieved, the construction efficiency is greatly improved, and the problem of repeated leakage is reduced.

Description

Rich water stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures
Technical Field
The utility model belongs to the technical field of tunnel construction, and particularly relates to a shield segment circumferential seam leakage stoppage construction structure for a water-rich stratum.
Background
In the shield construction process, the problem of duct piece water leakage often occurs, the problem is particularly common in water-rich strata, the leakage stoppage construction is a long process, when the duct piece is plugged by adopting the prior art, epoxy resin is injected into a duct piece gap through oblique multiple drilling, the construction process has multiple drilling conditions in the construction process, the damage to the duct piece is more, and the epoxy resin is easy to flow on the duct piece after being injected and is not easy to clean; and the probability of repeated water leakage in the middle and later stages of the shield segment construction process is high, and the blocking is usually required for multiple times and repeated. Therefore, in order to solve the problems, the water-rich stratum shield segment circumferential weld leaking stoppage construction structure is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the defects in the prior art are overcome, and the water-rich stratum shield segment circumferential weld leaking stoppage construction structure is provided.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a rich water stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures which characterized in that: the device comprises a protective layer assembly arranged between an elevation plugging point and a low-elevation plugging point and used for plugging a leakage point, and plugging wooden piles arranged on two sides of the protective layer assembly and used for plugging the protective layer assembly;
the protective layer assembly comprises a cement mortar protective layer and an epoxy resin layer, wherein the cement mortar protective layer is arranged on the inner side of the shield segment and arranged between an elevation plugging point and a low-rise plugging point, the epoxy resin layer is arranged on the outer side of the cement mortar protective layer, an exhaust hole is formed in the cement mortar protective layer, and the exhaust hole is arranged on one side close to the elevation plugging point.
Foretell water-rich stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures, its characterized in that: the vertical distance between the elevation plugging point and the bottom surface of the tunnel is greater than the vertical distance between the leakage point and the bottom surface of the tunnel; the vertical distance between the low-range plugging point and the bottom surface of the tunnel is smaller than the vertical distance between the leakage point and the bottom surface of the tunnel; the circumferential distance between the elevation plugging point and the leakage point and the circumferential distance between the low-range plugging point and the leakage point are not less than 1.5 m.
Foretell water-rich stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures, its characterized in that: the plugging timber pile is inserted between two adjacent shield segments from inside to outside, and the insertion end of the plugging timber pile is abutted against the elastic sealing gasket of the shield segments; one of the plugging timber piles is arranged on the elevation plugging point, and the other plugging timber pile is arranged on the low-range plugging point.
Foretell water-rich stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures, its characterized in that: the tangent line of the elevation plugging point is perpendicular to the plugging timber pile inserted on the elevation plugging point, and the tangent line of the low-range plugging point is perpendicular to the plugging timber pile inserted on the low-range plugging point.
Foretell water-rich stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures, its characterized in that: two water-stopping needle heads are arranged on the cement mortar protective layer, and one water-stopping needle head is arranged at one side close to the elevation plugging point; the other water-stopping needle head is arranged at one side close to the low-range plugging point.
Foretell water-rich stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures, its characterized in that: and the cement mortar protective layer is provided with a mounting hole for mounting the water stopping needle head, and the mounting hole is arranged along the length direction of the plugging timber pile.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the cement mortar protective layer is arranged to perform early plugging on the area where the leakage point is located, the end part of the area where the leakage point is located is plugged by using the plugging wooden pile, and finally, the epoxy resin layer is combined for internal filling, so that the sealing effect is formed, the construction efficiency is greatly improved, and the problem of repeated leakage is reduced.
2. According to the utility model, two plugging points are selected in the area where the leakage point is located, so that the area where the leakage point is located can be conveniently and integrally plugged, the plugging effect is enhanced, and the defect of repeated plugging is reduced.
3. The vent hole is reserved on one side close to the elevation plugging point, so that the epoxy resin layer can be conveniently observed in the later period of epoxy resin layer pouring, and the pouring compactness of the epoxy resin mixture is ensured.
4. According to the utility model, the plugging wooden piles are inserted into the end parts of the elevation plugging points and the end parts of the low-range plugging points, so that gaps among shield segments can be prevented from overflowing in the injection process of the epoxy resin mixture, and the construction efficiency of plugging is improved.
In conclusion, the cement mortar protective layer is arranged to perform early plugging on the area where the leakage point is located, the end of the area where the leakage point is located is plugged by using the plugging wooden pile, and finally the epoxy resin layer is combined to perform internal filling, so that the sealing effect is achieved, the construction efficiency is greatly improved, and the problem of repeated leakage is solved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic diagram showing the positional relationship of an elevation plugging point, an exhaust hole and a low-elevation plugging point according to the present invention.
Fig. 2 is a schematic diagram of the position relationship among the plugging timber pile, the water-stopping needle head and the shield segment.
Fig. 3 is an enlarged view of fig. 2 at a.
Fig. 4 is a schematic diagram of the position relationship between the plugging timber pile and the elastic sealing gasket according to the utility model.
FIG. 5 is a schematic diagram showing the positional relationship among the protective layer of cement mortar, the epoxy resin layer and the plugging timber pile.
FIG. 6 is a diagram showing the use of the potting epoxy resin admixture of the present invention.
Description of reference numerals:
1-shield segment; 2, plugging the wooden piles; 3-an elastic sealing gasket;
4-water stopping needle head; 5-high pressure grouting machine; 6, tunneling;
7-leakage point; 8, surrounding rock; 9-connecting pipe;
10-exhaust hole; 11-elevation plugging points; 12-low-range plugging point;
13-cement mortar protective layer; 14-epoxy resin layer.
Detailed Description
As shown in fig. 1 to 6, the utility model comprises a protective layer assembly arranged between an elevation plugging point 11 and a low-rise plugging point 12 and used for plugging a leakage point 7, and plugging timber piles 2 arranged on two sides of the protective layer assembly and used for plugging the protective layer assembly;
the protective layer assembly comprises a cement mortar protective layer 13 and an epoxy resin layer 14, wherein the cement mortar protective layer 13 is arranged on the inner side of the shield segment 1 and arranged between an elevation plugging point 11 and a low-rise plugging point 12, the epoxy resin layer 14 is arranged on the outer side of the cement mortar protective layer 13, an exhaust hole 10 is formed in the cement mortar protective layer 13, and the exhaust hole 10 is arranged on one side close to the elevation plugging point 11.
During the in-service use, carry out the shutoff in earlier stage to the region of leaking point 7 through setting up cement mortar inoxidizing coating 13, recycle shutoff stake 2 and carry out the leaking stoppage to the tip in region of leaking point 7, combine epoxy layer 14 to carry out inside packing at last, the three combines to form sealed leaking stoppage effect that reaches, has greatly improved the efficiency of construction, reduces the problem of leaking repeatedly.
Two plugging points are selected in the area where the leakage point 7 is located, so that the area where the leakage point 7 is located can be plugged integrally, the plugging effect is enhanced, and the defect of repeated plugging is overcome.
Wherein, reserve exhaust hole 10 in one side of being close to elevation shutoff point 11, when the later stage of being convenient for pours epoxy layer 14, observe epoxy layer 14's the condition of pouring, ensure the closely knit nature that the epoxy admixture poured.
In addition, the end parts of the elevation plugging points 11 and the end parts of the low-range plugging points 12 are inserted into the plugging timber piles 2, so that gaps among the shield segments 1 can be prevented from overflowing in the epoxy resin mixture injection process, and the plugging construction efficiency is improved.
As shown in fig. 6, a water-stopping needle 4 is installed in the second mounting hole, a high-pressure grouting machine 5 is connected with the water-stopping needle 4 in the second mounting hole, the high-pressure grouting machine 5 is started, and an epoxy resin mixture is poured into the water-stopping needle 4 in the second mounting hole; observing the exhaust hole 10 until the exhaust hole 10 continuously emits the epoxy resin mixture, and closing the high-pressure grouting machine 5; installing a water stopping needle head 4 in the first mounting hole, connecting a high-pressure grouting machine 5 with the water stopping needle head 4 in the first mounting hole, starting the high-pressure grouting machine 5, and pouring an epoxy resin mixture into the water stopping needle head 4 in the first mounting hole; observing the exhaust hole 10 until the exhaust hole 10 continuously emits the epoxy resin mixture, and closing the high-pressure grouting machine 5; an epoxy resin layer 14 is formed on the inner side of the cement mortar protective layer 13.
Particularly, the cement mortar protective layer 13 is coated by using cement mortar prepared by using quick-setting cement, cement and A2 durable thin-layer repairing material according to the mass ratio of 3:5: 3; the epoxy resin layer 14 is made of epoxy resin: and (3) pouring the epoxy resin mixture prepared by the curing agent according to the mass ratio of 5: 1.
In the embodiment, as shown in fig. 1, the vertical distance between the elevation plugging point 11 and the bottom surface of the tunnel is greater than the vertical distance between the leakage point 7 and the bottom surface of the tunnel; the vertical distance between the low-range plugging point 12 and the bottom surface of the tunnel is smaller than the vertical distance between the leakage point 7 and the bottom surface of the tunnel; the circumferential distance between the elevation plugging point 11 and the leakage point 7 and the circumferential distance between the low-range plugging point 12 and the leakage point 7 are not less than 1.5 m.
In the embodiment, as shown in fig. 4, the plugging timber pile 2 is inserted between two adjacent shield segments 1 from inside to outside, and the insertion end of the plugging timber pile 2 abuts against the elastic sealing gasket 3 of the shield segment 1; one plugging timber pile 2 is arranged on the elevation plugging point 11, and the other plugging timber pile 2 is arranged on the low-range plugging point 12.
In actual use, the main function of the plugging timber pile 2 is to plug the epoxy resin mixture and prevent the epoxy resin mixture from overflowing during pouring, and the plugging timber pile is arranged at two ends of the epoxy resin layer 14 to play a plugging role.
In this embodiment, the tangent of the elevation plugging point 11 is perpendicular to the plugging timber pile 2 inserted in the elevation plugging point 11, and the tangent of the low-range plugging point 12 is perpendicular to the plugging timber pile 2 inserted in the low-range plugging point 12.
In actual use, in order to ensure that the plugging timber pile 2 has a plugging effect on the epoxy resin mixture, the plugging timber pile 2 needs to be vertically inserted from the inside of the tunnel 6 to the direction of the surrounding rock 8.
As shown in fig. 2, in this embodiment, two water-stopping needles 4 are disposed on the cement mortar protective layer 13, and one water-stopping needle 4 is disposed at a side close to the elevation plugging point 11; the other water-stopping needle head 4 is arranged at one side close to the low-range plugging point 12.
In this embodiment, the cement mortar protective layer 13 is provided with a mounting hole for mounting the water-stopping needle 4, and the mounting hole is arranged along the length direction of the plugging timber pile 2.
In practical use, the main function of the water-stopping needle head 4 is to fill an epoxy resin mixture to form an epoxy resin layer 14, so that a mounting hole needs to be formed in the cement mortar protective layer 13 for mounting the water-stopping needle head 4, and the water-stopping needle head 4 can be detached and plugged after the epoxy resin layer 14 is filled in a later stage, so that the tightness of plugging is ensured.
When the method is used, firstly, leakage points 7 among gaps of shield segments are determined, an elevation plugging point 11 and a low-range plugging point 12 are determined in an area where the leakage points 7 are located, cement mortar is smeared between the elevation plugging point 11 and the low-range plugging point 12, and a cement mortar protective layer 13 is formed on the inner side surface of a tunnel 6; inserting plugging wooden piles 2 on the elevation plugging points 11 and the low-range plugging points 12 until the insertion ends of the plugging wooden piles 2 abut against the elastic sealing gaskets 3 of the shield segment 1, and stopping inserting the plugging wooden piles 2; pouring an epoxy resin mixture into the outer side of the cement mortar protective layer 13 by using the water-stopping needle heads 4 arranged on the cement mortar protective layer 13, respectively pouring the epoxy resin mixture into the two water-stopping needle heads 4 during pouring, and stopping pouring the epoxy resin mixture after observing that the vent holes 10 continuously emit the epoxy resin mixture; forming an epoxy resin layer 14 on the inner side of the cement mortar protective layer 13; and finally, the water stopping needle head 4 can be removed, the mounting hole and the exhaust hole 10 are plugged by cement mortar, and the plugging construction of the leakage point 7 is completed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (6)

1. The utility model provides a water-rich stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures which characterized in that: the device comprises a protective layer assembly and blocking wooden piles (2), wherein the protective layer assembly is arranged between an elevation blocking point (11) and a low-elevation blocking point (12) and is used for blocking a leakage point (7), and the blocking wooden piles are arranged on two sides of the protective layer assembly and are used for blocking the protective layer assembly;
the protective layer subassembly is in including setting up in shield constructs section of jurisdiction (1) inboard and laying cement mortar inoxidizing coating (13) between elevation shutoff point (11) and low range shutoff point (12) and setting epoxy layer (14) in the cement mortar inoxidizing coating (13) outside, exhaust hole (10) have been seted up on cement mortar inoxidizing coating (13), exhaust hole (10) are laid and are being close to one side of elevation shutoff point (11).
2. The water-rich stratum shield segment circumferential weld leaking stoppage construction structure as recited in claim 1, characterized in that: the vertical distance between the elevation plugging point (11) and the bottom surface of the tunnel is larger than the vertical distance between the leakage point (7) and the bottom surface of the tunnel; the vertical distance between the low-range plugging point (12) and the bottom surface of the tunnel is smaller than the vertical distance between the leakage point (7) and the bottom surface of the tunnel; the circumferential distance between the elevation plugging point (11) and the leakage point (7) and between the low-range plugging point (12) and the leakage point (7) is not less than 1.5 m.
3. The water-rich stratum shield segment circumferential weld leaking stoppage construction structure as recited in claim 1, characterized in that: the plugging timber pile (2) is inserted between two adjacent shield segments (1) from inside to outside, and the insertion end of the plugging timber pile (2) abuts against an elastic sealing gasket (3) of each shield segment (1); one plugging timber pile (2) is arranged on the elevation plugging point (11), and the other plugging timber pile (2) is arranged on the low-range plugging point (12).
4. The water-rich stratum shield segment circumferential weld leaking stoppage construction structure as recited in claim 3, characterized in that: the tangent of the elevation plugging point (11) is perpendicular to the plugging timber pile (2) inserted on the elevation plugging point (11), and the tangent of the low-range plugging point (12) is perpendicular to the plugging timber pile (2) inserted on the low-range plugging point (12).
5. The water-rich stratum shield segment circumferential weld leaking stoppage construction structure as recited in claim 1, characterized in that: two water-stopping needle heads (4) are arranged on the cement mortar protective layer (13), and one water-stopping needle head (4) is arranged at one side close to the elevation plugging point (11); the other water-stopping needle head (4) is arranged at one side close to the low-range plugging point (12).
6. The water-rich stratum shield segment circumferential weld leaking stoppage construction structure as recited in claim 5, characterized in that: and the cement mortar protective layer (13) is provided with a mounting hole for mounting the water stopping needle head (4), and the mounting hole is distributed along the length direction of the plugging timber pile (2).
CN202220734904.7U 2022-03-28 2022-03-28 Rich water stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures Active CN216894422U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220734904.7U CN216894422U (en) 2022-03-28 2022-03-28 Rich water stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220734904.7U CN216894422U (en) 2022-03-28 2022-03-28 Rich water stratum shield constructs section of jurisdiction circumferential weld leaking stoppage construction structures

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Publication Number Publication Date
CN216894422U true CN216894422U (en) 2022-07-05

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ID=82193816

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Country Status (1)

Country Link
CN (1) CN216894422U (en)

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