1. The utility model provides a tunnel waterproof construction, its characterized in that, including shield structure section of jurisdiction, surface drainage pipe, concrete layer, waterproof layer and track ballast bed of having seted up a plurality of apertures, drainage pipe follows the axial direction of shield structure section of jurisdiction arranges and lays in the medial surface of shield structure section of jurisdiction, concrete layer covers drainage pipe is in order to fix it the medial surface of shield structure section of jurisdiction, drainage pipe with concrete layer's top has been laid the waterproof layer, track ballast bed vertically locates the waterproof layer top.

2. The waterproof tunnel structure of claim 1, wherein the shield segment is of an arc sheet structure, and the drainage pipeline is disposed at the lowest position of the inner side surface of the shield segment.

3. The tunnel waterproof structure of claim 2, wherein a positioning groove is formed on the inner side surface of the shield segment, a small hole is formed in the lower portion of the drainage pipeline, the cross section of the drainage pipeline is in an inverted U shape, and the lower portion of the drainage pipeline is mounted in the positioning groove.

4. The tunnel waterproof structure of claim 1, wherein a plurality of the drainage pipelines are sequentially arranged along the axial direction of the shield segment, a first end surface of each drainage pipeline is provided with a convex purlin, a second end surface far away from the first end surface is provided with a concave purlin, two adjacent drainage pipelines are arranged, and the convex purlin of one drainage pipeline is embedded in the concave purlin of the other drainage pipeline so as to connect the two adjacent drainage pipelines.

5. The tunnel waterproofing structure according to claim 4, wherein the convex purlin protrudes from the first end surface and is located at a middle position of the first end surface, and a middle position of the second end surface is recessed toward a middle axial section of the drainage pipeline to form a concave purlin engaged with the convex purlin.

6. The tunnel waterproofing structure according to claim 1, wherein both ends of the drainage pipeline are respectively provided with a manhole communicating with the inside of the drainage pipeline.

7. A construction method for manufacturing the tunnel waterproofing structure according to any one of claims 1 to 6, comprising the steps of:

s1, drawing up the length and the number of drainage pipelines according to the diameter of the shield segment and geological conditions;

s2, installing the drainage pipeline on the inner side surface of the shield segment;

s3, paving a concrete layer above the drainage pipeline;

s4, paving a waterproof layer above the concrete layer;

and S5, paving a track bed above the waterproof layer.

8. The construction method according to claim 7, wherein the step of S1 further includes:

and S11, arranging a positioning groove on the inner side surface of the shield segment.

9. The construction method according to claim 8, wherein the step of S2 further includes:

s21, embedding the drainage pipelines in the positioning grooves, and sequentially laying and connecting the adjacent drainage pipelines along the axial direction of the shield segment;

and S22, laying a concrete layer above the drainage pipeline to fix the drainage pipeline on the inner side surface of the shield segment.

10. The construction method according to claim 7, further comprising the steps of:

and S5, opening an access well communicated with the drainage pipeline above the drainage pipeline.

Background

With the increase of urban population pressure, urban underground rail transit is developed vigorously to solve the urban traffic problem. In the design and construction of subway rails, a waterproof system is an important component, and the operation and safety of the whole subway system are related. Along with the increase of the service life of the tunnel in the interval of partial cities, the problem of water leakage occurs in the underground engineering of partial tunnels due to comprehensive factors such as tunnel construction errors and the like, so that water seeps into the track bed, the track bed is deformed and floats upwards, and the subway operation is influenced.

Disclosure of Invention

The invention provides a tunnel waterproof structure and a construction method thereof, which are used for solving the problem of water seepage caused by poor waterproof performance of a subway rail.

In order to solve the technical problems, a first aspect of the present invention provides a tunnel waterproof structure, including a shield segment, a drainage pipeline having a plurality of small holes formed on a surface thereof, a concrete layer, a waterproof layer, and a track bed, wherein the drainage pipeline is arranged along an axial direction of the shield segment and laid on an inner side surface of the shield segment, the concrete layer covers the drainage pipeline to fix the drainage pipeline on the inner side surface of the shield segment, the waterproof layer is laid above the drainage pipeline and the concrete layer, and the track bed is longitudinally arranged above the waterproof layer.

Preferably, the shield segment is of an arc sheet structure, and the drainage pipeline is arranged at the lowest position of the inner side surface of the shield segment.

Preferably, the inner side surface of the shield segment is provided with a positioning groove, the lower part of the drainage pipeline is provided with a through small hole, the cross section of the drainage pipeline is in an inverted U shape, and the lower part of the drainage pipeline is arranged in the positioning groove.

Preferably, the drainage pipelines are sequentially arranged along the axial direction of the shield segment, a first end face of each drainage pipeline is provided with a convex purlin, a second end face far away from the first end face is provided with a concave purlin, the adjacent two drainage pipelines are arranged, one of the convex purlins of one drainage pipeline is embedded in the other concave purlin of the drainage pipeline, and therefore the convex purlins of the adjacent two drainage pipelines are connected.

Preferably, the convex purlin protrudes from the first end face and is located at the middle position of the first end face, and the middle position of the second end face is recessed towards the middle shaft section of the drainage pipeline to form a concave purlin matched with the convex purlin.

Preferably, both ends of the drainage pipeline are respectively provided with an access well communicated with the inside of the drainage pipeline.

A second aspect of the present invention provides a construction method for manufacturing the tunnel waterproofing structure as described above, comprising the steps of:

s1, drawing up the length and the number of drainage pipelines according to the diameter of the shield segment and geological conditions;

s2, installing the drainage pipeline on the inner side surface of the shield segment;

s3, paving a concrete layer above the drainage pipeline;

s4, paving a waterproof layer above the concrete layer;

and S5, paving a track bed above the waterproof layer.

Preferably, the step of S1 further includes:

and S11, arranging a positioning groove on the inner side surface of the shield segment.

Preferably, the step of S2 further includes:

s21, embedding the drainage pipelines in the positioning grooves, and sequentially laying and connecting the adjacent drainage pipelines along the axial direction of the shield segment;

and S22, laying a concrete layer above the drainage pipeline to fix the drainage pipeline on the inner side surface of the shield segment.

Preferably, the method further comprises the following steps:

and S5, opening an access well communicated with the drainage pipeline above the drainage pipeline.

Compared with the prior art, the tunnel waterproof structure and the construction method thereof have the beneficial effects that:

through arranging drainage pipe on the shield segment, and through concrete layer with its fixed mounting on the medial surface of shield segment, consequently can make the infiltration from shield segment lower part infiltration enter into in the drainage pipe through the aperture of drainage pipe to take out the infiltration in the drainage pipe through subsequent pumping device. In addition, the waterproof layer is laid on the concrete layer, and the track bed is further laid on the waterproof layer, so that water seepage below the waterproof layer is prevented from entering the track bed, deformation and floating of the track bed are caused, and subway operation is influenced.

Drawings

FIG. 1 is a schematic top view of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of a male purlin;

FIG. 4 is a schematic view of a connection structure of a male purlin and a female purlin;

FIG. 5 is a schematic view showing an installation structure of the drain duct.

Fig. 2 is a schematic sectional view of the track bed 5 before it is constructed.

In the figure, the position of the upper end of the main shaft,

1. shield constructs section of jurisdiction, 2, drainage pipe, 3, concrete layer, 4, waterproof layer, 5, track ballast bed, 6, positioning groove, 7, protruding purlin, 8, concave purlin, 9, access well.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

With reference to fig. 1, 2 and 5, a first aspect of the embodiment of the present invention provides a tunnel waterproof structure, including a shield segment 1, a drainage pipeline 2 with a plurality of small holes (not shown) formed on the surface thereof, a concrete layer 3, a waterproof layer 4 and a track bed 5, wherein the drainage pipeline 2 is arranged along the axial direction of the shield segment 1 and laid on the inner side surface of the shield segment 1, the concrete layer 3 covers the drainage pipeline 2 to fix the drainage pipeline on the inner side surface of the shield segment 1, the waterproof layer 4 is laid above the drainage pipeline 2 and the concrete layer 3, and the track bed 5 is longitudinally covered above the waterproof layer 4.

Based on the technical scheme, the tunnel waterproof structure provided by the first aspect of the embodiment of the invention can enable the seepage water in the shield segment 1 to enter the drainage pipeline 2 to be discharged by arranging the drainage pipeline 2 on the shield segment 1 and fixedly installing the drainage pipeline on the shield segment 1 through the concrete layer 3. In addition, the waterproof layer 4 is laid on the concrete layer 3, and the track bed 5 is further laid on the waterproof layer 4, so that seepage water is prevented from entering the track bed 5, and the track bed is prevented from deforming and floating.

It should be noted that the present invention performs drainage with respect to the seepage water oozed from the bottom of the shield segment 1, and the present invention does not consider to treat it because the seepage water oozed from both sides of the shield segment 1 is small. In actual engineering, the whole tunnel is subjected to full-wrap waterproof design, and the invention aims at the problem that the existing full-wrap waterproof design fails for a long service life, particularly the bottom part of the shield segment 1. In addition, the concrete layer 4 is a water permeable concrete layer, and the water permeable concrete layer can penetrate through the concrete layer and flow into the drainage pipeline 2.

Preferably, the shield segment 1 is an arc sheet structure, the drainage pipeline 2 is arranged at the lowest position of the inner side surface of the shield segment 1, specifically, the inner side surface of the shield segment 1 is provided with a positioning groove 6, the lower part of the drainage pipeline 2 is provided with a through small hole and the cross section of the small hole is in an inverted U shape, and the lower part of the drainage pipeline 2 is arranged in the positioning groove 6. Therefore, the drainage pipeline 2 can be accurately and stably arranged at the lowest position of the arc sheet structure of the shield segment 1, so that seepage water can easily enter the cavity of the drainage pipeline 2 through the small holes on the surface of the drainage pipeline 2, and finally the seepage water is discharged out of the tunnel through the guiding effect of the drainage pipeline 2. Although this method still leaves a small amount of seepage water in the tunnel, it does not cause the deformation of the track bed 5 to float upward.

With reference to fig. 3-4, preferably, the plurality of drainage pipelines 2 are sequentially arranged along the axial direction of the shield segment 1, the first end surface of each drainage pipeline 2 is provided with a convex purlin 7, the second end surface far away from the first end surface is provided with a concave purlin 8, and two adjacent drainage pipelines 2 are arranged, wherein the convex purlin 7 of one drainage pipeline 2 is embedded in the concave purlin 8 of the other drainage pipeline, so as to connect the two adjacent drainage pipelines 2. Namely, through the cooperation of the concave purlins 8 and the convex purlins 7, the plurality of drainage pipelines 2 can be mutually connected and matched and laid along the axial direction of the shield segment 1.

Specifically, protruding purlin 7 is outstanding in the intermediate position that first terminal surface set up and be located first terminal surface, and the intermediate position of second terminal surface is sunken in order to form with protruding purlin 7 complex concave purlin 8 to drainage pipe 2's middle shaft section direction, consequently, during the use, with protruding purlin 7 embedding concave purlin 8 in, can accomplish adjacent drainage pipe 2's connection, convenient and fast, and connect effectively.

Preferably, the two ends of the drainage pipeline 2 are respectively provided with a maintenance well 9 communicated with the inside of the drainage pipeline 2, so that when accumulated water or unsmooth drainage occurs in the drainage pipeline 2, the drainage pipeline can be maintained through the maintenance wells 9.

With reference to fig. 1 to 4, a second aspect of the present invention provides a construction method for manufacturing the tunnel waterproofing structure provided by the first aspect, including the steps of:

s1, drawing up the length and the number of the drainage pipelines 2 according to the diameter and the geological conditions of the shield segment 1;

s2, installing a drainage pipeline 2 on the inner side surface of the shield segment 1;

s3, laying a concrete layer 3 above the drainage pipeline 2;

s4, paving a waterproof layer 4 above the concrete layer 3;

and S5, paving the track bed 5 above the waterproof layer 4.

Specifically, the step S1 further includes: and S11, arranging a positioning groove 6 on the inner side surface of the shield segment 1. The step of S2 further includes: s21, embedding the drainage pipelines 2 in the positioning groove 6, and sequentially laying and connecting the adjacent drainage pipelines 2 along the axial direction of the shield segment 1; and S22, laying a concrete layer 3 above the drainage pipeline 2 so as to fix the drainage pipeline 2 on the inner side surface of the shield segment 1.

Further, the construction method further comprises the following steps:

and S5, an inspection well 9 communicated with the drainage pipeline 2 is arranged above the drainage pipeline 2.

Based on the scheme, the construction method provided by the second aspect of the invention is that the prefabricated drainage pipeline 2 is hoisted into the tunnel, is positioned and installed on the inner side surface of the shield segment 1 through the positioning groove 6, is connected with the adjacent drainage pipeline 2 through the matching of the convex purlin 7 and the concave purlin 8, repeats the processes and is connected with the drainage pipeline 2 along the longitudinal direction. When the drainage pipeline 2 is installed, concrete layers 3 on two sides of the drainage pipeline 2 need to be poured, a waterproof layer 4 is applied above the drainage pipeline 2 and the concrete layers 3, and finally a track bed 5 is poured in place and an inspection well 9 is arranged.

Above work progress, it should be noted that the waterproof layer 4 can be laid longitudinally only after the concrete layer 3 reaches a certain strength.

In summary, the embodiment of the present invention provides a tunnel waterproof structure and a construction method for constructing the same, which can effectively discharge the seepage water in the shield segment 1 into the drainage pipe 2, and effectively prevent the seepage water from entering the track bed 5 due to the application of the waterproof layer 4. In addition, the maintenance well 9 is arranged, so that convenience is brought to maintenance personnel to regularly maintain the interior of the drainage pipeline 2.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.