Waterproof detection device and waterproof detection method for shield tunnel segments

Abstract

The present disclosure provides a segment waterproof detection device and a waterproof detection method for a shield tunnel. The waterproof detection device includes: a sealing component that can be detachably installed on the outside of a gap formed by a plurality of adjacent segments; a surface of the sealing component facing the segment is provided with a water filling groove that is adapted to the shape of the covered gap, so that a water injection cavity that is sealed from the outside is formed between the water filling groove and the segment; the sealing component is provided with a water injection hole connected to the water filling groove to inject water into the water filling groove; wherein the water filling groove is constructed in any one of a straight line shape, a cross shape and a T shape, and at least two adjacent sealing components can be spliced ​​and connected so that the water filling groove provided in the sealing component is adapted to the length of the extension direction of the gap to cover the detection position of the gap.

Description

Technical Field

[0001] At least one embodiment of the present disclosure relates to the technical field of shield tunnel engineering, and more specifically, to a segment waterproof detection device and a segment waterproof detection method for a shield tunnel. Background Art

[0002] Shield tunnels are widely used in subway construction, underground engineering construction, and urban construction such as river crossings. During the construction and use of shield tunnels, the waterproof performance of shield tunnels is related to structural safety and operational safety, so they need to be tested.

[0003] Since shield tunnels are used underground, existing waterproof testing for shield tunnels is mostly focused on the design phase. This primarily involves verifying the waterproof performance of rubber gaskets at the joints of the shield tunnel segments to evaluate the waterproof performance of the shield tunnel using these rubber gaskets. Common testing methods often involve simulating segments in a test scenario using steel plates or concrete components to build a local simulation structure. A sealing structure is then designed that matches the length and shape of the test location on the simulation structure. This sealing structure then applies a certain amount of water pressure to the joints of the simulation structure to detect whether the rubber gasket is leaking. This testing method can theoretically test the performance of the rubber gasket, but it clearly cannot simulate the complex environment of an actual shield tunnel.

[0004] It can be seen from this that it is currently impossible to perform waterproof testing on shield tunnels in actual application scenarios, and due to the diversity of detection positions that need to be tested in actual shield tunnels, such as the shape and / or size of the gaps at each detection position are also different, it is impossible to design a unified sealing structure to adapt to the detection requirements in different scenarios. Summary of the Invention

[0005] To address at least one of the aforementioned and other technical issues in the prior art, the present disclosure provides a shield tunnel segment waterproofing detection device and method. By assembling and installing sealing assemblies with water-filled grooves of varying shapes on shield tunnel segments, the device can meet the requirements of different inspection locations, gaps of varying shapes, and lengths in shield tunnels. Water is then injected into the gap to be inspected and pressure is applied for testing.

[0006] An embodiment of the present disclosure provides a waterproof detection device for pipe segments of a shield tunnel, comprising: a sealing assembly that can be detachably installed on the outside of a gap formed by a plurality of adjacent pipe segments, a surface of the sealing assembly facing the pipe segment being provided with a water filling groove that is adapted to the shape of the covered gap, so that a water injection cavity that is sealed from the outside is formed between the water filling groove and the pipe segment, and the sealing assembly being provided with a water injection hole connected to the water filling groove for injecting water into the water filling groove; wherein the water filling groove is constructed in any one of a straight line shape, a cross shape and a T shape, and at least two adjacent sealing assemblies can be spliced ​​and connected so that the water filling groove provided by the sealing assembly is adapted to the length of the extension direction of the gap to cover the detection position of the gap.

[0007] According to an embodiment of the present disclosure, the waterproof detection device further includes a connecting assembly, which is suitable for installing the above-mentioned sealing assembly on the above-mentioned pipe segment.

[0008] According to an embodiment of the present disclosure, the above-mentioned sealing assembly includes a first cover plate provided with the above-mentioned water filling groove in the shape of a straight line, and a connecting port is provided at at least one end of the above-mentioned first cover plate located in the long direction of the above-mentioned water filling groove in the shape of a straight line, which is suitable for being connected to the above-mentioned water filling groove formed by the other above-mentioned sealing assembly or being sealed by the other above-mentioned sealing assembly when the above-mentioned first cover plate and the other above-mentioned sealing assembly are assembled.

[0009] According to an embodiment of the present disclosure, the above-mentioned sealing assembly includes a second cover plate provided with the above-mentioned cross-shaped water filling groove, and each end of the above-mentioned second cover plate located at the above-mentioned cross-shaped water filling groove is provided with a connecting port, which is suitable for being connected to the above-mentioned water filling groove formed by the other above-mentioned sealing assembly and sealed by the other above-mentioned sealing assembly when the above-mentioned second cover plate is assembled with the other above-mentioned sealing assembly.

[0010] According to an embodiment of the present disclosure, the above-mentioned sealing assembly includes a third cover plate provided with the above-mentioned T-shaped water filling groove, and each end of the above-mentioned T-shaped water filling groove of the above-mentioned third cover plate is provided with a connecting port, which is suitable for being connected to the above-mentioned water filling groove formed by the other above-mentioned sealing assembly and sealed by the other above-mentioned sealing assembly when the above-mentioned third cover plate is assembled with the other above-mentioned sealing assembly.

[0011] According to an embodiment of the present disclosure, the above-mentioned first cover plate, the above-mentioned second cover plate and the above-mentioned third cover plate all include a main body constructed as a plate-like structure, including: a protrusion, which protrudes from the surface of the above-mentioned main body away from the above-mentioned pipe segment, and the above-mentioned water filling groove is arranged in the above-mentioned protrusion; and an assembly part, which is arranged on the parts of the above-mentioned main body located on both sides of the above-mentioned protrusion, and is suitable for assembly with the above-mentioned connecting assembly so that the above-mentioned sealing assembly is fixed on the above-mentioned pipe segment; wherein the above-mentioned water injection hole is arranged on the above-mentioned protrusion.

[0012] According to an embodiment of the present disclosure, the protrusion is further provided with an exhaust hole suitable for discharging the gas in the water tank, and a pressure measuring hole suitable for installing an external detection device to detect the water pressure in the water injection cavity.

[0013] According to an embodiment of the present disclosure, the above-mentioned sealing assembly also includes a fourth cover plate, the thickness of which is constructed to be greater than or equal to the depth of the water filling tank, and is suitable for being assembled on the side of the other above-mentioned sealing assembly where the above-mentioned connection port is provided to seal the above-mentioned connection port.

[0014] According to an embodiment of the present disclosure, the sealing assembly is provided with a curved surface adapted to the curvature of the outer surface of the pipe segment, so that the sealing assembly can be tightly fitted to the outer side of the pipe segment through the curved surface.

[0015] An embodiment of the present disclosure also provides a waterproof detection method based on a waterproof detection device, which is characterized in that it includes: selecting a target pipe segment to be detected within the area defined by the intermediate well; pushing the shield machine empty through the station to form a hollow area below the above-mentioned target pipe segment; selecting a plurality of corresponding sealing components according to the shape and / or length of the gap to be detected formed by the above-mentioned target pipe segment; splicing and fixing the plurality of the above-mentioned sealing components to the outside of the above-mentioned gap to form a sealed water injection cavity between the water filling tank provided in the above-mentioned sealing component and the above-mentioned target pipe segment; and injecting water into the water injection cavity to detect whether the above-mentioned gap is leaking under a preset water pressure.

[0016] The present invention provides a shield tunnel segment waterproof detection device and method. By assembling and installing a sealing assembly with straight, cross, and T-shaped water-filled grooves on a shield tunnel segment, the device can meet the requirements of different detection locations, gaps of different shapes, and lengths in the shield tunnel. Water is injected into the gap to be tested and pressure is applied for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional diagram of a waterproof detection device according to the present disclosure, wherein: Figure 1 A shows the first cover plate, Figure 1 B shows the second cover plate, Figure 1 C shows the third cover plate, Figure 1 D shows the fourth cover plate;

[0018] Figure 2 is a side view of a waterproof detection device according to an embodiment of the present disclosure taken along the axial perspective of a segment tunnel;

[0019] Figure 3 yes Figure 1 A diagram showing the waterproof detection device being used on a pipe segment with a cross gap;

[0020] Figure 4 yes Figure 1 A diagram showing the waterproof detection device being used on a pipe segment with a T-shaped gap;

[0021] Figure 5 yes Figure 1 A diagram showing the waterproof detection device being used on a pipe segment with a straight gap; and

[0022] Figure 6 It is a flow chart of a waterproof detection method according to the present disclosure.

[0023] In the drawings, the meanings of the reference numerals are as follows:

[0024] 1. Sealing components;

[0025] 11. First cover plate;

[0026] 111. first protrusion;

[0027] 112. The first ontology;

[0028] 113. First assembly department;

[0029] 12. Second cover plate;

[0030] 121, second protrusion;

[0031] 122. Second entity;

[0032] 123. Second assembly department;

[0033] 13. The third cover;

[0034] 131, third protrusion;

[0035] 132. The third entity;

[0036] 133. The third assembly department;

[0037] 14. Fourth cover;

[0038] 141, Fourth Assembly Department;

[0039] 142. The fourth entity;

[0040] 2. Segments;

[0041] 21. Prefabricated holes;

[0042] 3. Connect components;

[0043] 31. Bolts; and

[0044] 32. Nut. DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0046] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise," "include," etc. used herein indicate the presence of the features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0047] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0048] When expressions such as “at least one of A, B, and C, etc.” are used, they should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art. For example, “a system having at least one of A, B, and C” should include but is not limited to systems having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, and C, etc. When expressions such as “at least one of A, B, or C, etc.” are used, they should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art. For example, “a system having at least one of A, B, or C” should include but is not limited to systems having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, and C, etc.

[0049] Figure 1 is a three-dimensional diagram of a waterproof detection device according to the present disclosure, wherein: Figure 1 A shows the first cover plate, Figure 1 B shows the second cover plate, Figure 1 C shows the third cover plate, Figure 1 D shows the fourth cover plate.

[0050] According to the present disclosure, the waterproof detection device for shield tunnel segments is provided. Figure 1The device shown includes a sealing assembly 1. The sealing assembly 1 can be detachably mounted on the outside of the gap formed by a plurality of adjacent tube segments 2. The surface of the sealing assembly 1 facing the tube segments 2 is provided with a water filling groove adapted to the shape of the gap to be covered, so that a water injection cavity sealed from the outside is formed between the water filling groove and the tube segments 2. The sealing assembly 1 is provided with a water injection hole connected to the water filling groove to inject water into the water filling groove. The water filling groove is constructed in any one of a straight line, a cross, and a T shape. At least two adjacent sealing assemblies 1 can be spliced ​​and connected so that the water filling groove provided in the sealing assembly 1 adapts to the length of the gap in the extension direction to cover the detection position of the gap.

[0051] In such an embodiment, by providing a sealing assembly with I-shaped, cross-shaped and T-shaped water-filled grooves and assembling them and installing them on the pipe segments of the shield tunnel, the requirements of different detection positions, gaps of different shapes and lengths of the shield tunnel can be met, so as to cover the gaps to be detected and perform detection by injecting water into the water injection cavity and applying pressure.

[0052] Figure 2 It is a side view of the waterproof detection device according to an embodiment of the present disclosure along the axial perspective of the segment tunnel.

[0053] According to the embodiments of the present disclosure, Figure 2 As shown, the sealing assembly further includes a connecting assembly 3. The sealing assembly 3 is suitable for installing the sealing assembly 1 on the pipe segment 2.

[0054] In an illustrative embodiment, Figure 2 As shown, the sealing component 1 is constructed into an arc-shaped plate-like structure. In detail, the lower surface of the sealing component 1 is constructed into an arc-shaped surface (such as Figure 2 Furthermore, the curvature and length of the curved surface are adapted to (e.g., substantially the same as) the curvature of the outer surface of the shield tunnel formed by the segment 2.

[0055] According to the embodiments of the present disclosure, Figure 2 As shown, the sealing assembly 1 is provided with an arcuate surface adapted to the curvature of the outer surface of the tube segment 2 , so that the sealing assembly 1 is closely fitted to the outer side of the tube segment 2 through the arcuate surface.

[0056] In an illustrative embodiment, Figure 2 As shown, the connection assembly 3 includes a bolt 31 and a nut. In detail, the plurality of segments 2 spliced ​​together to form the shield tunnel are provided with prefabricated holes 21 for the bolt 31 to pass through the sealing assembly and the prefabricated holes 21, and then through the nut 32 from the surface of the segment opposite to the sealing assembly (such as Figure 2 The lower surface shown in FIG. 1 is mounted on the bolts 31 to fix the sealing assembly 1 on the pipe segment.

[0057] According to the embodiments of the present disclosure, Figure 1As shown, the first, second, and third cover plates 11, 12, and 13 each comprise a plate-like body with a protrusion and a mounting portion formed thereon. The protrusion projects from the surface of the body facing away from the tube segment 2, and the surface of the protrusion facing the tube segment 2 is provided with an inwardly recessed water-filling groove. The mounting portion is located on the outside of the protrusion and is adapted to assemble with the connecting assembly 3 to secure the sealing assembly 1 to the tube segment 2. Water injection holes are provided on the protrusion.

[0058] According to the embodiments of the present disclosure, Figure 1 As shown, the protrusion is also provided with an exhaust hole suitable for discharging the gas in the water tank, and a pressure measuring hole suitable for installing external detection equipment to detect the water pressure in the water injection cavity.

[0059] In an illustrative embodiment, Figure 1 As shown, the protrusion is provided with water injection holes, exhaust holes, and pressure measuring holes at intervals. Specifically, the water injection holes are adapted to connect to an external water source to inject water into the water injection chamber; the exhaust holes are adapted to connect to a drain pipe and / or a drain valve to allow water injected from the water injection holes to flow out through the exhaust holes during water injection, thereby exhausting and sealing the air in the water injection chamber; and the pressure measuring hole is adapted to connect to an external water pressure gauge to monitor the water pressure in the water injection chamber.

[0060] According to the embodiments of the present disclosure, Figure 1 As shown in A, the sealing component 1 includes a first cover plate 11 provided with a straight water filling groove, and a connecting port is provided at at least one end of the first cover plate 11 in the long direction of the straight water filling groove, which is suitable for being connected to the water filling groove formed by the other sealing component 1 or being sealed by the other sealing component 1 when the first cover plate 11 and the other sealing component 1 are assembled.

[0061] In an illustrative embodiment, Figure 1 As shown in FIG. 1A , the first body 112 of the first cover plate 11 is configured as a substantially rectangular structure. Specifically, the middle portion of the first body 112 is provided with a longitudinal direction of the first body 112 (eg Figure 1 A first protrusion 111 extending from the lower left to the upper right (described in A).

[0062] In an illustrative embodiment, Figure 1 As shown in FIG. 1A , the water filling groove is configured to be arranged along the extension direction of the first protrusion 111 and formed on the surface of the first protrusion 111 facing the tube sheet 2 (as shown in FIG. Figure 1 Furthermore, one end of the water tank (such as Figure 1 The upper end shown in the figure) is open to form a connection port for assembling other sealing components 1.

[0063] In an illustrative embodiment, Figure 1As shown in Figure A, the first body 112 is provided with strip-shaped holes on both sides of the first protruding portion 111 to serve as the first assembly portion 113 of the first cover plate 11. In detail, the strip-shaped holes are configured to be substantially parallel to the extension direction of the first protruding portion 111. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0064] For example, the first assembly portion 113 may be configured to include a plurality of through holes spaced apart along the longitudinal direction of the first body 112 to accommodate the bolts 31 of the connection assembly 3 to pass therethrough and be assembled on the pipe segment 2 .

[0065] In such an embodiment, since the outer surface of the shield tunnel formed by splicing the pipe segments 2 is arc-shaped, the use of strip holes as the first assembly portion 113 is conducive to the processing of the strip holes, and there is no need to set the inner diameter of the hole according to the curvature difference between the inner surface and the outer surface of the first cover plate; and the use of strip holes is conducive to setting the connection position of the bolts 31 of the connecting assembly and the first cover plate 11 (such as arranging different numbers of bolts according to the length and installation position of the first cover body), so that the first cover plate 11 fits tightly against the outer side of the pipe segment 2 to define a sealed cavity between the pipe segment 2.

[0066] In an illustrative embodiment, Figure 1 As shown in FIG. 1B , the second body 122 of the second cover plate 12 includes but is not limited to a structure configured as a substantially square. In detail, the middle portion of the second body 122 is provided with a longitudinal direction of the second body 122 (eg Figure 1 B's left and right directions) and width direction (such as Figure 1 The second protrusions 121 extend in the upper and lower directions of B respectively, so that the second protrusions 121 form a cross structure.

[0067] In an illustrative embodiment, Figure 1 As shown in FIG. 1B , the surface of the second protrusion 121 facing the tube sheet 2 (as shown in FIG. Figure 1 The surface facing the paper shown in B of FIG) is provided with a cross-shaped water filling groove. In detail, the water filling groove is confined in the second protrusion 121 and is provided at the four ends of the second protrusion 121 (such as Figure 1 The upper end, lower end, left end and right end (as shown in B) form four connection ports respectively.

[0068] In an illustrative embodiment, Figure 1 As shown in Figure B, four groups of grooves are provided at the four corners of the second body 122 located outside the second protruding portion 121, respectively, to serve as the second assembly portion 123 of the second cover plate 12. Furthermore, the two grooves in each group are provided on the two sides forming the corner. It should be understood that the embodiments of the present disclosure are not limited to this.

[0069] For example, the second assembly portion 123 may be configured as a plurality of through holes to accommodate the bolts 31 of the connection assembly 3 to pass therethrough and be assembled on the pipe segment 2 .

[0070] In such an embodiment, the second body is constructed into a roughly square structure, the second protrusion is arranged in the middle of the second body, and the second assembly part is arranged at the four corners of the second body, which is conducive to dispersing the force at various parts of the second body when assembling with the bolts, so that the second body is tightly assembled on the outside of the pipe segment to define a water injection cavity between the pipe segment.

[0071] In an illustrative embodiment, Figure 1 As shown in FIG. 1 , the first body 132 of the third cover plate 13 is configured as a substantially square structure. Specifically, the middle portion of the third body 132 is provided with a longitudinal direction of the third body 132 (eg, Figure 1 The left and right directions of C) and the width direction (such as Figure 1 The third protrusion 131 extends on one side (upper and lower directions) of the C, so that the third protrusion 131 forms a T-shaped structure.

[0072] In an illustrative embodiment, Figure 1 As shown in C, the surface of the third protrusion 131 facing the tube sheet 2 (as shown in Figure 1 A water filling groove is provided on the surface facing the paper shown in C. In detail, the water filling groove is defined in the third protrusion 131, and a connection port is formed at the upper end of the third protrusion 131.

[0073] In an illustrative embodiment, Figure 1 As shown in FIG. 1 , a plurality of grooves are provided at the four corners of the third body 132 located outside the third protruding portion 131 to serve as the third assembly portion 133 of the third cover plate 13. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0074] For example, the third assembly portion 133 may be configured as a plurality of through holes to accommodate the bolts 31 of the connection assembly 3 to pass therethrough and be assembled on the tube segment 2 .

[0075] In such an embodiment, the third body is constructed into a roughly square structure, the third protrusion is arranged in the middle of the third body, and the third assembly part is arranged at the four corners of the third body, which is conducive to dispersing the force at various parts of the third body when assembling with the bolts, so that the third body is tightly assembled on the outside of the pipe segment to define the water injection cavity with the pipe segment.

[0076] In an illustrative embodiment, Figure 1As shown in FIG. 1 , the fourth body 141 of the fourth cover plate 14 is configured as a strip-shaped rectangular structure. Specifically, two grooves are provided on one side of the fourth body 141 to serve as a fourth assembly portion of the fourth cover plate 14 .

[0077] In an exemplary embodiment, the connection ports of the sealing components (i.e., the second cover plate 12, the third cover plate 13, and the fourth cover plate 14) can be equipped with sealing components (such as sealing rings or sealing gaskets). When two adjacent sealing components are assembled, the connection ports are sealed.

[0078] In an illustrative embodiment, Figure 1 As shown, the distance between the two strip holes provided in the first cover plate 11 is adapted to the spacing between at least two grooves provided in the second cover plate 12, the third cover plate 13 and the fourth cover plate 14, so that when the first cover plate 11 is in a state where other sealing components (i.e., the second cover plate 12, the third cover plate 13 and the fourth cover plate 14) are assembled, the openings of the strip holes provided in the first cover plate 11 and the grooves provided in the other sealing components are opposite to each other, and can be assembled through a common connecting component 3 (such as the connection position of two adjacent sealing components is limited by a bolt crimping) to be fixed to the pipe segment 2; or when multiple other sealing components (i.e., the second cover plate 12, the third cover plate 13 and the fourth cover plate 14) are assembled, the grooves provided in two adjacent sealing components 1 are assembled with each other to be fixed to the pipe segment 2 by multiple bolts 31.

[0079] In such an embodiment, the sealing components can be assembled with the pipe segments through the assembly parts provided by the multiple sealing components, and when the pipe segments are assembled, adjacent sealing components can be spliced ​​together to meet the assembly requirements of gaps of different sizes and / or shapes formed by the multiple pipe segments.

[0080] Figure 3 yes Figure 1 The waterproof detection device is applied to a pipe segment with a cross gap.

[0081] In an illustrative embodiment, Figure 3 As shown, the sealing assembly 1 includes but is not limited to four first cover plates 11 and one second cover plate 12. In detail, the cross-shaped water-filling groove formed in the second cover plate 12 is arranged at the detection position of the gap to be detected. Furthermore, the four first cover plates 11 are arranged around the second cover plate 12, so that the straight-line water-filling groove provided on each first cover plate 11 is tightly against one end of the cross-shaped water-filling groove of the second cover plate 12, so that the water-filling grooves provided on the first cover plate 11 and the second cover plate 12 jointly define a connected water injection cavity, which completely covers the detection position of the cross-shaped gap formed by splicing multiple pipe segments 2 to meet the waterproof detection requirements.

[0082] Figure 4 yes Figure 1 The waterproof detection device is applied to a pipe segment with a T-shaped gap.

[0083] In an illustrative embodiment, Figure 4 As shown, the sealing assembly 1 includes but is not limited to three first cover plates 11 and one third cover plate 13. In detail, the T-shaped water filling groove formed in the third cover plate 13 is set at the detection position of the gap to be detected. Furthermore, the three first cover plates 11 are arranged around the third cover plate 13, so that the I-shaped water filling groove set in each first cover plate 11 respectively abuts against one end of the T-shaped water filling groove of the third cover plate 13, so that the water filling grooves set in the first cover plate 11 and the third cover plate 13 jointly define a connected water injection cavity, which completely covers the detection position of the T-shaped gap formed by splicing multiple pipe segments 2 to meet the waterproof detection requirements.

[0084] Figure 5 yes Figure 1 The waterproof detection device is applied to a pipe segment with a straight gap.

[0085] In an illustrative embodiment, Figure 5 As shown, the sealing assembly 1 includes, but is not limited to, a first cover plate 11 and a fourth cover plate 14. Specifically, a straight-line water-filling groove formed in the first cover plate 11 is positioned at the detection location of the gap to be inspected. Furthermore, the fourth cover plate 14 abuts against the connection port of the water-filling groove of the first cover plate 11 to seal the water-filling groove provided in the first cover plate, thereby defining a straight-line water-filling cavity. This cavity completely covers the detection location of the straight-line gap formed by the splicing of the multiple segments 2, thereby meeting the waterproofing inspection requirements.

[0086] It should be understood that the embodiments of the present disclosure are not limited thereto. The sealing assembly 1 may further include a plurality of cover plates of the same type.

[0087] For example, two first cover plates may be included, and the connection ports provided on the two first cover plates are arranged relative to each other and spliced ​​to form a longer straight-line water injection cavity.

[0088] For another example, two second cover plates may be included, and the connection ports of the two second cover plates are relatively arranged and spliced ​​to form an irregular water injection cavity to meet the waterproof detection requirements of gaps of different shapes formed in adjacent areas on multiple pipe segments.

[0089] Figure 6 It is a flow chart of a waterproof detection method according to the present disclosure.

[0090] According to the waterproof detection method based on the waterproof detection device provided by the present disclosure, Figure 6As shown, it includes: step S210 to step S250.

[0091] Step S210: selecting a target segment to be inspected within the area defined by the middle well;

[0092] Step S220: Push the shield machine through the station empty to form a hollow area below the target segment;

[0093] Step S230: selecting a plurality of sealing assemblies that are suitable for the shape and / or length of the gap to be inspected formed in the target segment;

[0094] Step S240: assembling and fixing a plurality of sealing components to the outside of the gap so that a sealed water injection cavity is formed between the water filling grooves provided in the sealing components and the target segment;

[0095] Step S250: injecting water into the water injection chamber to detect whether water leakage occurs in the gap under a preset water pressure.

[0096] In an illustrative embodiment, step S210 selects target segments to be inspected within the area defined by the intermediate well, including: selecting some segments to be inspected as target segments in a shield tunnel with multiple rings already spliced ​​together based on historical experience or calculated data.

[0097] In an illustrative embodiment, step S230 selects a plurality of sealing components that are suitable for the shape and / or length of the gap to be detected formed by the target pipe segment, including: selecting a sealing component suitable for the above data (including shape and length) of the gap formed between the target pipe segments (so that the shape formed by the assembled sealing component is compatible with the shape of the above gap and can cover the area of ​​the above gap); then, providing a through mounting hole at the position of the pipe segment for installing the sealing component.

[0098] In an illustrative embodiment, step S240 assembles and fixes multiple sealing components to the outside of the gap to form a sealed water injection cavity between the water filling tank set in the sealing component and the target pipe segment, including: pre-assembling and covering the multiple sealing components on the outside of the gap; passing multiple bolts through the mounting parts of the sealing components and the mounting holes set in the pipe segment in sequence, and then tightening and fixing them with nuts to keep the multiple sealing components in the pre-assembled position.

[0099] In an illustrative embodiment, step S250 injects water into the water injection chamber to detect whether water leakage occurs in the gap under a preset water pressure, including: connecting the water injection hole to an external water source and installing a water pressure gauge in the pressure measuring hole; injecting water into the water injection chamber through the water injection hole until water flows out of the exhaust hole, and then cutting off the exhaust hole (such as closing a valve, etc.); continuing to inject water into the water injection chamber until the preset water pressure is reached, then stabilizing the pressure for a period of time to observe whether the gap leaks; continuing to inject water into the water injection chamber until the next higher preset water pressure is reached, then stabilizing the pressure for a period of time to observe whether the gap leaks, until the gap formed by the pipe segment leaks, and then recording the target water pressure value that causes the leakage (that is, the maximum pressure that the pipe segment can withstand by the preset opening amount and displacement amount).

[0100] In an exemplary embodiment, the waterproof detection method further includes removing the waterproof detection device after the target water pressure value is reached, and detecting the next gap according to the above steps S210 to S250.

[0101] In an exemplary embodiment, the waterproof detection method further includes sealing the mounting holes prefabricated on the pipe segments to maintain the sealing of the pipe segments.

[0102] It should also be noted that directional terms such as "upper," "lower," "front," "back," "left," and "right" mentioned in the embodiments are merely references to the directions in the accompanying drawings and are not intended to limit the scope of protection of this disclosure. Throughout the drawings, identical elements are represented by identical or similar reference numerals. Conventional structures or configurations will be omitted where they may cause confusion in understanding this disclosure.

[0103] The embodiments of the present disclosure are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although each embodiment has been described separately above, this does not mean that the measures in each embodiment cannot be used in combination to advantage. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A waterproof detection device for shield tunnel segments, characterized in that: include: A sealing assembly (1) is detachably mounted on the outside of a gap formed by a plurality of adjacent tube segments (2); a surface of the sealing assembly (1) facing the tube segment (2) is provided with a water filling groove adapted to the shape of the gap to be covered, so that a water filling cavity sealed from the outside is formed between the water filling groove and the tube segment (2); and the sealing assembly (1) is provided with a water injection hole connected to the water filling groove for injecting water into the water filling groove; The water filling groove is configured in any one of a straight line shape, a cross shape and a T shape, and at least two adjacent sealing components (1) can be connected in a spliced ​​manner so that the water filling groove provided in the sealing component (1) is adapted to the length of the extension direction of the gap, so as to cover the detection position of the gap; It also includes a connecting component (3) suitable for installing the sealing component (1) on the pipe segment (2), the sealing component (1) including a first cover plate (11) provided with a water-filling groove in the shape of a straight line, the first cover plate (11) being provided with a connecting port at at least one end in the longitudinal direction of the water-filling groove in the shape of a straight line, suitable for being connected to the water-filling groove formed by the other sealing component (1) or being sealed by the other sealing component (1) when the first cover plate (11) and the other sealing component (1) are assembled, the sealing component (1) also including a second cover plate (12) provided with a water-filling groove in the shape of a cross, the second cover plate (12) being provided with a connecting port at each end in the water-filling groove in the shape of a cross, suitable for being connected to the water-filling groove formed by the other sealing component (1) or being sealed by the other sealing component (1) when the second cover plate (12) and the other sealing component (1) are assembled; The first cover plate (11) and the second cover plate (12) both comprise a body configured as a plate-shaped structure, the body comprising: A protrusion protrudes from a surface of the body that is away from the tube sheet (2), wherein the water filling tank is provided in the protrusion; and An assembly portion, provided on the body at both sides of the protruding portion, suitable for assembly with the connecting assembly (3) so that the sealing assembly (1) is fixed to the pipe segment (2); Wherein, the water injection hole is arranged on the protruding portion.

2. A waterproof detection device for shield tunnel segments, characterized in that: include: A sealing assembly (1) is detachably mounted on the outside of a gap formed by a plurality of adjacent tube segments (2); a surface of the sealing assembly (1) facing the tube segment (2) is provided with a water filling groove adapted to the shape of the gap to be covered, so that a water filling cavity sealed from the outside is formed between the water filling groove and the tube segment (2); and the sealing assembly (1) is provided with a water injection hole connected to the water filling groove for injecting water into the water filling groove; The water filling groove is constructed in any one of a straight line, a cross and a T-shape, and at least two adjacent sealing components (1) can be connected in a spliced ​​manner so that the water filling groove provided in the sealing component (1) is adapted to the length of the extension direction of the gap to cover the detection position of the gap; and further comprises a connecting component (3) suitable for installing the sealing component (1) on the pipe segment (2), the sealing component (1) comprising a first cover plate (11) provided with the straight line water filling groove, at least one end of the first cover plate (11) located in the long direction of the straight line water filling groove is provided with a connecting port suitable for When the first cover plate (11) is in a state of being assembled with the other sealing component (1), it is connected to the water filling groove formed by the other sealing component (1) or is sealed by the other sealing component (1). The sealing component (1) further comprises a third cover plate (13) provided with the T-shaped water filling groove. Each end of the T-shaped water filling groove of the third cover plate (13) is provided with a connecting port, which is suitable for being connected to the water filling groove formed by the other sealing component (1) or being sealed by the other sealing component (1) when the third cover plate (13) is in a state of being assembled with the other sealing component (1). The first cover plate (11) and the third cover plate (13) both comprise a body configured as a plate-shaped structure, the body comprising: A protrusion protrudes from a surface of the body that is away from the tube sheet (2), wherein the water filling tank is provided in the protrusion; and An assembly portion, provided on the body at both sides of the protruding portion, suitable for assembly with the connecting assembly (3) so that the sealing assembly (1) is fixed to the pipe segment (2); Wherein, the water injection hole is arranged on the protruding portion.

3. The device according to claim 1 or 2, characterized in that The protrusion is also provided with an exhaust hole suitable for discharging the gas in the water filling tank, and a pressure measuring hole suitable for installing an external detection device to detect the water pressure in the water injection cavity.

4. The device according to claim 1 or 2, characterized in that The sealing assembly (1) further comprises a fourth cover plate (14), the thickness of the fourth cover plate (14) being configured to be greater than or equal to the depth of the water tank, and being suitable for being assembled on a side of the other sealing assembly (1) where the connection port is provided, so as to seal the connection port.

5. The device according to claim 1 or 2, characterized in that The sealing component (1) is provided with an arcuate surface adapted to the curvature of the outer surface of the tube segment (2), so that the sealing component (1) is tightly fitted to the outer side of the tube segment (2) through the arcuate surface.

6. A waterproof detection method based on the waterproof detection device according to any one of claims 1 to 5, characterized in that: include: Select the target segment to be inspected within the area defined by the middle well; Pushing the shield machine through the station empty so as to form a hollow area below the target segment; Selecting a plurality of sealing assemblies that are suitable for the shape and / or length of the gap to be detected formed by the target segment; Assembling and fixing a plurality of the sealing assemblies on the outside of the gap so that a sealed water injection cavity is formed between the water filling groove provided in the sealing assemblies and the target segment; as well as Water is injected into the water injection chamber to detect whether water leakage occurs in the gap under a preset water pressure.

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