CN116519222A - Waterproof detection device and waterproof detection method for duct piece of shield tunnel - Google Patents

Abstract

The present disclosure provides a segment waterproof detection device and waterproof detection method for a shield tunnel, the waterproof detection device comprising: the sealing assembly is detachably arranged at the outer side of a gap formed by a plurality of adjacent duct pieces, a water filling groove matched with the shape of the covered gap is formed in the surface of the sealing assembly, which faces the duct pieces, so that a water filling cavity sealed with the outside is formed between the water filling groove and the duct pieces, and a water filling hole communicated with the water filling groove is formed in the sealing assembly so as to fill water into the water filling groove; the water filling groove is constructed into 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 arranged by the sealing assemblies is suitable for the length of the extending direction of the gap so as to cover the detection position of the gap.

Description

Waterproof detection device and waterproof detection method for duct piece of shield tunnel

Technical Field

At least one embodiment of the present disclosure relates to the technical field of shield tunnel engineering, and more particularly, to a segment waterproof detection device and a waterproof detection method for a shield tunnel.

Background

The shield tunnel is widely applied to subway construction, underground engineering construction, river crossing and other city construction, and in the construction and use process of the shield tunnel, the waterproof performance of the shield tunnel relates to the safety of the structure and the operation safety, so that the detection is needed.

Because the application scene of the shield tunnel is underground, the existing waterproof detection of the shield tunnel is mostly concentrated in the design stage, and the waterproof performance of the shield tunnel applying the rubber sealing gasket is evaluated mainly by verifying the waterproof performance of the rubber sealing gasket at the segment joint of the shield tunnel. The common detection method is to simulate the segment by a steel plate or a concrete member in a test scene so as to build a local simulation structure, and design a sealing structure matched with the length and the shape of the detection position of the simulation structure so as to apply a certain water pressure to the joint position of the simulation structure through the sealing structure to detect whether the rubber sealing gasket leaks or not.

Therefore, the waterproof detection of the shield tunnel in the actual application scene cannot be performed at present, and the detection requirements in different scenes cannot be met by designing a uniform sealing structure because the diversity of detection positions required to be detected in the actual shield tunnel, such as the shape and/or the size of a gap of each detection position, are different.

Disclosure of Invention

To solve at least one technical problem of the foregoing and other aspects in the prior art, the present disclosure provides a segment waterproof detection device and a waterproof detection method for a shield tunnel. The sealing assemblies with the water filling grooves in different shapes are spliced and installed on the pipe piece of the shield tunnel, so that the requirements of gaps in different detection positions, different shapes and different lengths of the shield tunnel can be met, and the water filling and pressing device is assembled on the gap to be detected for detection.

The embodiment of the disclosure provides a waterproof detection device for a segment of a shield tunnel, comprising: a sealing assembly detachably mounted outside a gap formed by a plurality of adjacent duct pieces, wherein a water filling groove matched with the shape of the covered gap is formed on the surface of the sealing assembly facing the duct pieces, so that a water filling cavity sealed with the outside is formed between the water filling groove and the duct pieces, and a water filling hole communicated with the water filling groove is formed in the sealing assembly so as to fill water into the water filling groove; wherein, the water filling tank is constructed into any one of a straight line, a cross shape and a T shape, and at least two adjacent sealing components can be spliced and connected, so that the water filling tank arranged by the sealing components is adapted to the length of the extending direction of the gap so as to cover the detection position of the gap.

According to an embodiment of the present disclosure, the waterproof detection device further includes a connection assembly adapted to mount the sealing assembly on the tube sheet.

According to an embodiment of the present disclosure, the sealing assembly includes a first cover plate provided with the in-line water filling tank, and at least one end of the first cover plate, located in the longitudinal direction of the in-line water filling tank, is provided with a connection port adapted to be connected to or sealed by the water filling tank formed by the other sealing assembly in a state in which the first cover plate is combined with the other sealing assembly.

According to an embodiment of the disclosure, the sealing assembly includes a second cover plate provided with the cross-shaped water filling tank, each end of the second cover plate located in the cross-shaped water filling tank is provided with a connection port, and the second cover plate is adapted to be communicated with the water filling tank formed by the other sealing assembly and sealed by the other sealing assembly in a state that the second cover plate is spliced with the other sealing assembly.

According to an embodiment of the disclosure, the sealing assembly includes a third cover plate provided with the T-shaped water filling tank, each end of the third cover plate located in the T-shaped water filling tank is provided with a connection port, and the third cover plate is adapted to be sealed by another sealing assembly in a state that the third cover plate is spliced with another sealing assembly, and is communicated with the water filling tank formed by the other sealing assembly.

According to an embodiment of the present disclosure, the first cover plate, the second cover plate, and the third cover plate each include a body configured in a plate-like structure, including: a protruding part protruding from the surface of the body, which is away from the duct piece, wherein the water filling tank is arranged in the protruding part; and the assembly part is arranged at the two sides of the protruding part of the body and is suitable for being assembled with the connecting component so as to fix the sealing component on the duct piece; wherein, the water injection hole is arranged on the convex part.

According to an embodiment of the present disclosure, the protruding portion is further provided with an exhaust hole adapted to exhaust the gas in the water filling tank, and a pressure measuring hole adapted to install an external detecting device, so as to detect the water pressure in the water filling cavity.

According to an embodiment of the present disclosure, the sealing assembly further includes a fourth cover plate having a thickness configured to be greater than or equal to a depth of the water filling tank, and adapted to be assembled on a side of the other sealing assembly where the connection port is provided, so as to seal the connection port.

According to an embodiment of the disclosure, the sealing component is provided with an arc surface adapted to the radian of the outer surface of the segment, so that the sealing component is tightly attached to the outer side of the segment through the arc surface.

The embodiment of the disclosure also provides a waterproof detection method based on the waterproof detection device, which is characterized by comprising the following steps: selecting a target segment to be detected in an area defined by the intermediate well; pushing the shield machine through a station in an empty mode so that a hollow area is formed below the target duct piece; selecting a plurality of sealing components which are matched with each other according to the shape and/or the length of a gap to be detected formed by the target duct piece; a plurality of sealing assemblies are spliced and fixed on the outer sides of the gaps, so that a sealed water injection cavity is formed between a water filling tank arranged in the sealing assemblies and the target duct piece; and injecting water into the water injection cavity so as to detect whether water leakage occurs in the gap under preset water pressure.

According to the disclosure, a segment waterproof detection device and a segment waterproof detection method for a shield tunnel are provided. The sealing assembly with the water filling grooves in the shape of a Chinese character ' Yi ', a cross and a T ' is spliced and installed on the segment of the shield tunnel, so that the requirements of gaps with different detection positions, different shapes and different lengths of the shield tunnel can be met, and the water injection and the pressure application on the gap to be detected can be assembled for detection.

Drawings

Fig. 1 is a perspective view of a waterproof detection device according to the present disclosure, wherein a of fig. 1 shows a first cover plate, B of fig. 1 shows a second cover plate, C of fig. 1 shows a third cover plate, and D of fig. 1 shows a fourth cover plate;

fig. 2 is a side view of a watertight detection device according to an embodiment of the present disclosure from an axial perspective along a segment tunnel;

fig. 3 is a use state diagram of the waterproof detection device shown in fig. 1 applied to a duct piece with a cross slit;

fig. 4 is a use state diagram of the waterproof detection device shown in fig. 1 applied to a duct piece with a T-shaped slit;

fig. 5 is a use state diagram of the waterproof detection device shown in fig. 1 applied to a duct piece with a slit; and

fig. 6 is a flow chart of a waterproof detection method according to the present disclosure.

In the drawings, the reference numerals have the following meanings:

1. a seal assembly;

11. a first cover plate;

111. a first projection;

112. a first body;

113. a first fitting portion;

12. a second cover plate;

121. a second projection;

122. a second body;

123. a second fitting portion;

13. a third cover plate;

131. a third projection;

132. a third body;

133. a third fitting portion;

14. a fourth cover plate;

141. a fourth fitting portion;

142. a fourth body;

2. a segment;

21. prefabricating holes;

3. a connection assembly;

31. a bolt; and

32. and (3) a nut.

Detailed Description

For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and/or the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

All terms, including technical and scientific terms, used herein have the meaning commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be construed to have meanings consistent with the context of the present specification and should not be construed in an idealized or overly formal manner.

Where expressions like at least one of "A, B and C, etc. are used, the expression" system having at least one of A, B and C "shall be construed, for example, in general, in accordance with the meaning of the expression as commonly understood by those skilled in the art, and shall include, but not be limited to, systems having a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc. Where a formulation similar to at least one of "A, B or C, etc." is used, such as "a system having at least one of A, B or C" shall be interpreted in the sense one having ordinary skill in the art would understand the formulation generally, for example, including but not limited to systems having a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.

Fig. 1 is a perspective view of a waterproof detection device according to the present disclosure, wherein a of fig. 1 shows a first cover plate, B of fig. 1 shows a second cover plate, C of fig. 1 shows a third cover plate, and D of fig. 1 shows a fourth cover plate.

The waterproof detection device for the segment of the shield tunnel provided by the disclosure comprises a sealing assembly 1 as shown in fig. 1. The sealing component 1 is detachably arranged on the outer side of a gap formed by a plurality of adjacent duct pieces 2, a water filling groove matched with the shape of the covered gap is formed on the surface of the sealing component 1 facing the duct pieces 2, so that a water filling cavity sealed with the outside is formed between the water filling groove and the duct pieces 2, and a water filling hole communicated with the water filling groove is formed in the sealing component 1 so as to fill water into the water filling groove. The water filling tank is constructed in any one of a straight shape, a cross shape and a T shape, and at least two adjacent sealing assemblies 1 can be spliced and connected so that the water filling tank arranged on the sealing assemblies 1 is adapted to the length of the extending direction of the gap to cover the detection position of the gap.

In the embodiment, the sealing components provided with the water filling grooves in the shape of a Chinese character 'Yi', a cross and a T are spliced and installed on the pipe piece of the shield tunnel, so that the requirements of gaps with different detection positions, different shapes and different lengths of the shield tunnel can be met, the gaps to be detected are covered, and the water is injected into the water injection cavity to apply pressure for detection.

Fig. 2 is a side view of a waterproof detection device according to an embodiment of the present disclosure from an axial perspective along a segment tunnel.

According to an embodiment of the present disclosure, the sealing assembly further comprises a connection assembly 3, as shown in fig. 2. The seal assembly 3 is adapted to mount the seal assembly 1 on the tube sheet 2.

In an exemplary embodiment, as shown in fig. 2, the sealing assembly 1 is constructed as an arcuate plate-like structure. In detail, the lower surface of the seal assembly 1 is configured as an arc-shaped surface (lower surface as shown in fig. 2). Further, the radian and arc length of the arc surface are adapted (e.g. approximately the same) to the radian of the outer surface of the shield tunnel formed by the segment 2.

According to the embodiment of the present disclosure, as shown in fig. 2, the sealing assembly 1 is provided with an arc surface adapted to the arc of the outer surface of the segment 2, so that the sealing assembly 1 is tightly attached to the outer side of the segment 2 through the arc surface.

In an exemplary embodiment, as shown in fig. 2, the connection assembly 3 includes a bolt 31 and a nut. In detail, the prefabricated holes 21 are provided on the plurality of segments 2 spliced to form the shield tunnel, so that the bolts 31 pass through the sealing assembly and the prefabricated holes 21, and then the surface (the lower surface as shown in fig. 2) of the segment opposite to the sealing assembly is mounted on the bolts 31 through the nuts 32 to fix the sealing assembly 1 on the segment.

According to an embodiment of the present disclosure, as shown in fig. 1, each of the first cover plate 11, the second cover plate 12, and the third cover plate 13 includes a body configured in a plate-like structure, on which a protruding portion and an assembling portion are formed. The bulge is protruded from the surface of the body, which is away from the duct piece 2, and the surface of the bulge, which faces the duct piece 2, is provided with an inward concave water filling groove. The fitting portion is provided at a portion of the body located outside the protruding portion, and is adapted to be fitted with the connection assembly 3 so that the seal assembly 1 is fixed to the segment 2. The water injection hole is arranged on the protruding part.

According to the embodiment of the present disclosure, as shown in fig. 1, the protrusion is further provided with an exhaust hole adapted to exhaust the gas in the water filling tank, and a pressure measuring hole adapted to install an external detecting device to detect the water pressure in the water filling chamber.

In an exemplary embodiment, as shown in fig. 1, water injection holes, air discharge holes and pressure measuring holes are formed on the protruding portion at intervals. In detail, the water injection hole is suitable for communicating with an external water source to inject water into the water injection cavity; the gas vent is suitable for connecting a drain pipe and/or a drain valve so as to enable water injected by the water injection hole to flow out along the gas vent in a water injection state, so that gas in the water injection cavity is exhausted and sealed; the pressure measuring hole is suitable for being externally connected with a water pressure meter so as to detect the water pressure in the water injection cavity.

According to the embodiment of the present disclosure, as shown in a of fig. 1, the sealing assembly 1 includes a first cover plate 11 provided with a linear water filling tank, and at least one end of the first cover plate 11 located in the longitudinal direction of the linear water filling tank is provided with a connection port adapted to be communicated with a water filling tank formed by another sealing assembly 1 or sealed by another sealing assembly 1 in a state that the first cover plate 11 is spliced with the other sealing assembly 1.

In one illustrative embodiment, as shown in fig. 1 a, the first body 112 of the first cover plate 11 is configured in a generally rectangular structure. In detail, the first body 112 is provided at a central portion thereof with a first protrusion 111 extending in a longitudinal direction of the first body 112 (from bottom left to top right as illustrated in a of fig. 1).

In an exemplary embodiment, as shown in a of fig. 1, the water-filled tank is configured to be disposed along the extending direction of the first projecting portion 111, formed on the surface of the first projecting portion 111 facing the segment 2 (the surface facing away from the paper as shown in fig. 1). Further, one end (the upper end as shown in fig. 1) of the water filling tank is opened, and a connection port for other sealing components 1 is formed.

In an exemplary embodiment, as shown in a of fig. 1, both sides of the first body 112 located at the first protrusion 111 are provided with bar-shaped holes to serve as the first fitting portions 113 of the first cover plate 11. In detail, the bar-shaped hole is configured to be substantially parallel to the extending direction of the first protrusion 111. It should be understood that embodiments of the present disclosure are not limited thereto.

For example, the first fitting portion 113 may be configured to include a plurality of through holes spaced apart in the longitudinal direction of the first body 112 to accommodate the bolts 31 of the connection assembly 3 therethrough and to be fitted to the segment 2.

In such an embodiment, since the outer surface of the shield tunnel formed by splicing the segments 2 is arc-shaped, the strip-shaped hole is used as the first assembly portion 113, which is beneficial to processing the strip-shaped hole, and the inner diameter of the hole does not need to be set according to the radian difference between the inner surface and the outer surface of the first cover plate; moreover, the strip-shaped holes are beneficial to setting the combination positions of the bolts 31 of the connecting assembly and the first cover plate 11 (such as different numbers of bolts are arranged according to the length and the installation position of the first cover body), so that the first cover plate 11 is tightly attached to the outer side of the duct piece 2, and a sealing cavity is defined between the first cover plate and the duct piece 2.

In one illustrative embodiment, as shown in FIG. 1B, the second body 122 of the second cover plate 12 includes, but is not limited to, a structure configured to be substantially square. In detail, the second body 122 is provided at a middle portion thereof with second protrusions 121 respectively extending in a longitudinal direction (e.g., a left and right direction of B of fig. 1) and a width direction (e.g., an upper and lower direction of B of fig. 1) of the second body 122 such that the second protrusions 121 form a cross-shaped structure.

In an exemplary embodiment, as shown in B of fig. 1, the surface of the second protrusion 121 facing the tube sheet 2 (the surface facing the paper surface as shown in B of fig. 1) is provided with a cross-shaped water charging groove. In detail, the water filling tank is defined in the second protrusion 121, and four connection ports are formed at four ends (upper, lower, left and right ends as shown in B of fig. 1) of the second protrusion 121, respectively.

In an exemplary embodiment, as shown in fig. 1B, four sets of grooves are provided at four corner positions of the second body 122 located outside the second protrusion 121, respectively, to serve as the second fitting portion 123 of the second cap plate 12. Further, the two grooves in each set are respectively arranged on two sides forming an angle. It should be understood that embodiments of the present disclosure are not limited thereto.

For example, the second fitting portion 123 may be configured as a plurality of through holes to accommodate the bolts 31 of the connection assembly 3 therethrough and to be fitted with the segment 2.

In such an embodiment, the second body is configured to have a substantially square structure, the second protruding portion is disposed in the middle of the second body, and the second assembling portion is disposed at four corners of the second body, so that the second body is easily dispersed from being stressed when assembled with the bolt, so that the second body is tightly assembled on the outer side of the duct piece, and a water injection cavity is defined between the second body and the duct piece.

In one illustrative embodiment, as shown in fig. 1C, the first body 132 of the third cover 13 is configured in a generally square configuration. In detail, the third body 132 is provided at a middle portion thereof with third protrusions 131 extending along one side of the third body 132 in a longitudinal direction (e.g., left and right directions of C in fig. 1) and a width direction (e.g., up and down directions of C in fig. 1), respectively, such that the third protrusions 131 form a T-shaped structure.

In an exemplary embodiment, as shown in fig. 1C, the surface of the third protrusion 131 facing the duct piece 2 (the surface facing the paper surface as shown in fig. 1C) is provided with a water charging groove. In detail, the water charging groove is defined in the third protrusion 131, and a connection port is formed at an upper end of the third protrusion 131.

In an exemplary embodiment, as shown in fig. 1C, the third body 132 is provided with a plurality of grooves at four corner positions outside the third protrusion 131 to serve as the third fitting portion 133 of the third cap plate 13. It should be understood that embodiments of the present disclosure are not limited thereto.

For example, the third fitting portion 133 may be configured as a plurality of through holes to accommodate the bolts 31 of the connection assembly 3 therethrough and to be fitted with the segment 2.

In such an embodiment, the third body is configured to have a substantially square structure, the third protruding portion is disposed in the middle of the third body, and the third assembling portion is disposed at four corners of the third body, so that the third body is easily dispersed from being stressed when assembled with the bolt, so that the third body is tightly assembled on the outer side of the segment, and defines the water injection cavity with the segment.

In an exemplary embodiment, as shown in D of fig. 1, the fourth body 141 of the fourth cover plate 14 is configured in a bar-shaped rectangular-like structure. In detail, two grooves are provided on one side of the fourth body 141 to serve as a fourth fitting portion of the fourth cap plate 14.

In an exemplary embodiment, the sealing members (e.g., a seal ring or gasket) are assembled at the connection port positions of the sealing members (i.e., the second cover plate 12, the third cover plate 13 and the fourth cover plate 14), and the connection port portions are sealed in a state where the adjacent two sealing members are assembled

In an exemplary embodiment, as shown in fig. 1, the space between two strip-shaped holes provided in the first cover plate 11 is matched with the space 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 in a state that the first cover plate 11 is spliced by other sealing components (i.e., the second cover plate 12, the third cover plate 13 and the fourth cover plate 14), the openings of the strip-shaped 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 by a common connecting component 3 (such as a connecting position of two adjacent sealing components is limited by a bolt in a crimping manner) so as to be fixed on the duct piece 2; or in a state that a plurality of other sealing components (namely, the second cover plate 12, the third cover plate 13 and the fourth cover plate 14) are spliced, grooves formed by two adjacent sealing components 1 are spliced with each other so as to be fixed on the duct piece 2 through a plurality of bolts 31.

In such an embodiment, the plurality of seal assemblies are provided with the assembling portions, so that the seal assemblies and the duct piece can be assembled, and adjacent seal assemblies can be spliced with each other in the duct piece assembled state, so as to meet the assembling requirements of gaps with different sizes and/or shapes formed by the plurality of duct pieces.

Fig. 3 is a use state diagram of the waterproof detection device shown in fig. 1 applied to a duct piece with a cross slit.

In an exemplary embodiment, as shown in fig. 3, the sealing assembly 1 includes, but is not limited to, four first cover plates 11 and one second cover plate 12. In detail, a cross-shaped water filling tank formed in the second cover plate 12 is provided at a detection position of the slit to be detected. Further, the four first cover plates 11 are arranged around the second cover plate 12, so that the straight water filling groove arranged on each first cover plate 11 is tightly abutted against one end of the cross water filling groove of the second cover plate 12, so that a water filling cavity communicated with each other is defined in the water filling grooves arranged on the first cover plate 11 and the second cover plate 12, and the water filling cavity completely covers the detection position of the cross-shaped gap formed by splicing the plurality of segments 2, thereby meeting the waterproof detection requirement.

Fig. 4 is a use state diagram of the waterproof detection device shown in fig. 1 applied to a duct piece with a T-shaped slit.

In an exemplary embodiment, as shown in fig. 4, the sealing assembly 1 includes, but is not limited to, three first cover plates 11 and one third cover plate 13. In detail, a T-shaped water filling tank formed in the third cover plate 13 is provided at a detection position of the slit to be detected. Further, the three first cover plates 11 are arranged around the third cover plate 13, so that the linear water filling grooves arranged on each first cover plate 11 respectively lean against one end of the T-shaped water filling groove of the third cover plate 13, so that a water filling cavity communicated with each other is defined in the water filling grooves arranged on the first cover plate 11 and the third cover plate 13, and the water filling cavity completely covers the detection position of the T-shaped gap formed by splicing the plurality of segments 2, thereby meeting the waterproof detection requirement.

Fig. 5 is a use state diagram of the waterproof detection device shown in fig. 1 applied to a duct piece with a slit.

In an exemplary embodiment, as shown in fig. 5, the seal assembly 1 includes, but is not limited to, a first cover plate 11 and a fourth cover plate 14. In detail, the in-line water filling tank formed in the first cover plate 11 is provided at the detection position of the slit to be detected. Further, the fourth cover plate 14 abuts against the connection port of the water filling tank of the first cover plate 11 to seal the water filling tank arranged on the first cover plate to define a linear water filling cavity, so that the detection position of the linear gap formed by splicing the water filling cavity and the plurality of duct pieces 2 is completely covered, and the waterproof detection requirement is met.

It should be understood that embodiments of the present disclosure are not limited thereto. A plurality of cover plates of the same type may also be included in the seal assembly 1.

For example, the water filling device can comprise two first cover plates, wherein the connecting ports formed by the two first cover plates are oppositely arranged for splicing so as to form a longer in-line water filling cavity.

For another example, the water injection device can comprise two second cover plates, and the connecting ports arranged on the two second cover plates are oppositely arranged for splicing to form a special-shaped water injection cavity so as to meet the waterproof detection requirements of gaps with different shapes formed by adjacent areas on a plurality of duct pieces.

Fig. 6 is a flow chart of a waterproof detection method according to the present disclosure.

According to the waterproof detection method based on the waterproof detection device provided by the disclosure, as shown in fig. 6, the waterproof detection method comprises the following steps: step S210 to step S250.

Step S210: selecting a target segment to be detected in an area defined by the intermediate well;

step S220: pushing the shield machine through the station in an empty mode so that a hollow area is formed below the target duct piece;

step S230: selecting a plurality of sealing components which are matched according to the shape and/or the length of a gap to be detected formed by the target duct piece;

step S240: a plurality of sealing components are spliced and fixed on the outer side of the gap, so that a sealed water injection cavity is formed between a water filling tank arranged in the sealing components and the target duct piece;

step S250: and injecting water into the water injection cavity so as to detect whether water leakage occurs in the gap under preset water pressure.

In an exemplary embodiment, step S210 selects a target tubular segment to be inspected within an area defined by the intermediate well, including: and selecting a plurality of segments to be detected from the shield tunnel with the spliced multiple rings as target segments through historical experience or calculation data.

In an exemplary embodiment, step S230 selects a plurality of sealing assemblies according to the shape and/or length of the gap to be detected formed by the target segment, including: selecting a sealing component (the shape formed by the spliced sealing components is matched with the shape of the gap and the area capable of covering the gap) suitable for the data according to the data (including the shape and the length) of the gap formed between the target duct pieces; and then, arranging a through mounting hole at the position of the duct piece where the sealing assembly is mounted.

In an exemplary embodiment, step S240 includes assembling and fixing a plurality of seal assemblies on an outer side of the slit, so that a sealed water injection cavity is formed between a water filling tank and a target segment in the seal assemblies, including: pre-splicing and covering a plurality of sealing assemblies on the outer sides of the gaps; after sequentially penetrating through the installation part of the sealing assembly and the installation holes of the duct piece, the bolts are locked and fixed through nuts, so that the sealing assemblies are kept at the pre-splicing positions.

In an exemplary embodiment, step S250 of injecting water into the water injection cavity to detect whether water leakage occurs in the gap under a preset water pressure includes: the water injection hole is communicated with an external water source, and a water pressure gauge is arranged in the pressure measurement hole; the water is injected into the water injection cavity through the water injection hole until the water flows out of the air exhaust hole, and the air exhaust hole is cut off (such as closing a valve and the like); continuously injecting water into the water injection cavity until the preset water pressure is reached, stabilizing the pressure for a period of time, and observing whether the gap is leaked or not; and continuously injecting water into the water injection cavity until the next higher preset water pressure is reached, stabilizing the pressure for a period of time to observe whether the gap is leaked or not, and recording a target water pressure value (namely the preset opening amount of the segment and the maximum pressure which can be borne by the staggered amount) which causes leakage after the gap formed by the segment is leaked.

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 steps S210 to S250.

In an exemplary embodiment, the waterproof detection method further includes plugging the mounting hole prefabricated on the duct piece to maintain the tightness of the duct piece.

It should be further noted that, the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, and are not intended to limit the scope of the present disclosure. Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may cause confusion in understanding the present disclosure.

The embodiments of the present disclosure are described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the embodiments cannot be used advantageously in combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be made by those skilled in the art without departing from the scope of the disclosure, and such alternatives and modifications are intended to fall within the scope of the disclosure.

Claims (10)

1. Waterproof detection device for section of jurisdiction in shield tunnel, its characterized in that includes:

the sealing assembly (1) is detachably arranged outside a gap formed by a plurality of adjacent duct pieces (2), a water filling groove matched with the shape of the covered gap is formed on the surface of the sealing assembly (1) facing the duct pieces (2), so that a water filling cavity sealed with the outside is formed between the water filling groove and the duct pieces (2), and a water filling hole communicated with the water filling groove is formed in the sealing assembly (1) so as to fill water into the water filling groove;

the water filling tank is constructed into any one of a straight line shape, a cross shape and a T shape, and at least two adjacent sealing assemblies (1) can be spliced and connected, so that the water filling tank arranged by the sealing assemblies (1) is adapted to the length of the gap in the extending direction so as to cover the detection position of the gap.

2. The device according to claim 1, further comprising a connection assembly (3) adapted to mount the sealing assembly (1) on the tube sheet (2).

3. The device according to claim 2, characterized in that the sealing assembly (1) comprises a first cover plate (11) provided with the in-line water filling tank, at least one end of the first cover plate (11) located in the long direction of the in-line water filling tank is provided with a connecting port, and the connecting port is suitable for being communicated with the water filling tank formed by the other sealing assembly (1) or being sealed by the other sealing assembly (1) in the state that the first cover plate (11) is spliced with the other sealing assembly (1).

4. A device according to claim 3, characterized in that the sealing assembly (1) further comprises a second cover plate (12) provided with a cross-shaped water filling tank, each end of the second cover plate (12) located in the cross-shaped water filling tank being provided with a connecting port adapted to be sealed by the other sealing assembly (1) in connection with the water filling tank formed by the other sealing assembly (1) in a state in which the second cover plate (12) is spliced with the other sealing assembly (1).

5. The device according to claim 4, characterized in that the sealing assembly (1) further comprises a third cover plate (13) provided with the T-shaped water filling tank, each end of the third cover plate (13) located in the T-shaped water filling tank is provided with a connecting port, and the connecting port is suitable for being sealed by the other sealing assembly (1) when the third cover plate (13) is combined with the other sealing assembly (1) and communicated with the water filling tank formed by the other sealing assembly (1).

6. The device according to claim 5, characterized in that the first cover plate (11), the second cover plate (12) and the third cover plate (13) each comprise a body configured as a plate-like structure, comprising:

the convex part is protruded from the surface of the body, which is away from the duct piece (2), and the water filling groove is arranged in the convex part; and

the assembling parts are arranged at the parts of the body, which are positioned at the two sides of the protruding parts, and are suitable for being assembled with the connecting component (3) so that the sealing component (1) is fixed on the duct piece (2);

wherein, the water injection hole is arranged on the protruding part.

7. The apparatus of claim 6, wherein the protrusion is further provided with a vent hole adapted to vent the gas in the water filling tank, and a pressure measuring hole adapted to install an external measuring device to measure the water pressure in the water filling chamber.

8. The device according to any one of claims 3 to 5, 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 filling tank, adapted to fit on the side of the other sealing assembly (1) provided with the connection port, so as to seal the connection port.

9. The device according to any one of claims 1 to 8, wherein the sealing assembly (1) is provided with an arcuate surface adapted to the curvature of the outer surface of the tube piece (2) so that the sealing assembly (1) is tightly attached to the outer side of the tube piece (2) by means of the arcuate surface.

10. A waterproof detection method based on the waterproof detection apparatus according to any one of claims 1 to 9, characterized by comprising:

selecting a target segment to be detected in an area defined by the intermediate well;

pushing the shield machine through a station in an empty mode so that a hollow area is formed below the target duct piece;

selecting a plurality of sealing components which are matched according to the shape and/or the length of a gap to be detected formed by the target duct piece;

a plurality of sealing assemblies are spliced and fixed on the outer sides of the gaps, so that a sealed water injection cavity is formed between a water filling tank arranged in the sealing assemblies and the target duct piece; and

and injecting water into the water injection cavity so as to detect whether water leakage occurs in the gap under preset water pressure.