Tunnel anti-seepage plugging structure

Abstract

The utility model discloses a tunnel anti-seepage plugging structure, which relates to the technical field of tunnel anti-seepage, and comprises a first template and a second template, the port of the first template is provided with a first connecting groove, and the port of the second template is connected with a first inserting plate; the first inserting plate and the first connecting groove are assembled to enable the first formwork and the second formwork to form a pouring mold, a grouting pipe is arranged on the side face of the first formwork, geotechnical cloth is arranged in the pouring mold, a daub layer adheres to the face, opposite to the pouring mold, of the geotechnical cloth, and a plurality of abutting nails are evenly arranged on the pouring mold in a penetrating mode. The ends of the abutting nails abut against the surface of the daub layer, fastening bolts are arranged at the four corners of the pouring mold in a penetrating mode, and the fastening bolts are of hollow structures. The first formwork and the second formwork are assembled through the first inserting plate and the first connecting groove to form the pouring mold, so that the sealing performance and the forming accuracy of the pouring mold can be guaranteed, targeted water seepage prevention plugging construction in a tunnel is facilitated, and the plugging effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel water seepage prevention, in particular to a tunnel water seepage prevention blocking structure. Background Art

[0002] Water seepage is a key problem that needs to be solved during the construction and use of tunnels. Due to the complex geological environment of tunnels, abundant groundwater, and numerous joints and weak links in the tunnel structure, the traditional anti-seepage measures that rely solely on the waterproof layer have limited waterproof effects. When affected by factors such as water pressure, changes in stratum stress, and deformation of tunnel structures for a long time, the waterproof layer is easily damaged, resulting in water seepage.

[0003] Chinese utility model CN221481940U discloses a tunnel anti-seepage plugging structure. When a wall crack that fits the tunnel wall is covered by a plugging plate, a grouting pipe is inserted into the top end of the wall crack. Since the bottom of the grouting pipe is a rubber hose, it has a plastic shape and can change its shape according to the mouth of the top wall crack. Then, the mortar used for repairing is poured into the crack. When the mortar in the wall crack solidifies, the base plate and the supporting structure are removed together with the plugging plate to complete the sealing and repair of the wall crack. The mortar used for repairing and plugging has waterproof and shrinkage resistance, so after the wall crack is repaired, it will have the effect of anti-seepage and firm sealing.

[0004] Traditionally, tunnel water seepage is mostly treated by grouting, but after the repair, only the cracks can be sealed to avoid the risk of water seepage. However, if the repair effect is not ideal, all gaps cannot be sealed and water seepage problems still exist. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In order to solve the problems raised in the above background technology, the utility model adopts the following technical solutions.

[0007] A tunnel anti-seepage plugging structure comprises a first template and a second template, wherein a first connecting groove is provided at a port of the first template, a first plug plate is connected to a port of the second template, and the first plug plate is assembled with the first connecting groove so that the first template and the second template form a casting mold, and a grouting pipe is provided on a side of the first template;

[0008] The tunnel anti-seepage sealing structure also includes a geotextile, a clay layer is adhered to the side of the geotextile opposite to the casting mold, a plurality of resistance nails are penetrated through the casting mold, the ends of the resistance nails abut against the surface of the clay layer, and fastening bolts are penetrated through the four corners of the casting mold, and the fastening bolts are hollow structures.

[0009] Furthermore, the fastening bolt is composed of an expansion tube and a countersunk bolt inserted therein, and the countersunk bolt is a hollow structure used for injecting plugging slurry.

[0010] Furthermore, a plurality of nail holes are evenly formed on the geotextile, wall nails are inserted into the nail holes, and nail caps are provided at one end of the wall nails, so that the geotextile is fixed at the water seepage place through the nail caps.

[0011] Furthermore, a plurality of accommodating grooves are equidistantly arranged in a circular shape in the middle of the wall nail, and a retaining bar is rotatably connected in the accommodating groove via a torsion spring.

[0012] Furthermore, a boss structure is provided at one end of the abutment pin that contacts the mastic layer, and the boss structure is used to increase the contact surface between the abutment pin and the mastic layer.

[0013] Furthermore, the inner surfaces of the first template and the second template are provided with convex strips, and wire mesh is provided on the convex strips.

[0014] Furthermore, the area of ​​the geotextile is smaller than that of the clay layer, the area of ​​the clay layer is smaller than the area of ​​the inner cavity of the casting mold, and the clay layer is made of a hardenable material.

[0015] Furthermore, an extended template is added between the first template and the second template, and the area of ​​the casting mold is increased by the added extended template. A second plug plate is provided at one end of the extended template connected to the first template, and a second connecting groove is opened at one end of the extended template connected to the second template.

[0016] Furthermore, the extension template is provided with round holes for installing fastening bolts and abutment pins.

[0017] Furthermore, the ports of the first template, the second template and the extended template are provided with installation grooves, and rubber sealing pads are embedded in the installation grooves.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] (1) In the utility model, the first template and the second template are assembled to form a casting mold, which can ensure the sealing and molding accuracy of the casting mold, and is conducive to targeted anti-seepage and plugging construction in the tunnel. An extended template can be added, and the area of ​​the casting mold can be conveniently increased through the design of the second plug plate and the second connecting groove to adapt to leakage areas of different sizes, making the structure more flexible and applicable to tunnel anti-seepage projects of various sizes.

[0020] (2) In the present utility model, the fastening bolt adopts a structure of combining an expansion tube with a hollow countersunk bolt and is threadedly connected to a nut. The hollow countersunk bolt can inject plugging slurry, and the plugging slurry can be supplemented and injected when needed to enhance the anti-seepage effect. The wire meshes on the inner surfaces of the first template and the second template increase its strength when injecting anti-leakage mortar into the casting mold through the grouting pipe, effectively preventing cracking and causing secondary water seepage. Description of the Drawings

[0021] Figure 1 is the three-dimensional structure of the plugging structure in the present utility model Figure 1 。

[0022] Figure 2 is the three-dimensional structure of the plugging structure in the present utility model Figure 2 。

[0023] Figure 3 is the side view of the plugging structure in the present utility model.

[0024] Figure 4 is the rear view of the plugging structure in the present utility model.

[0025] Figure 5 is the explosion of the plugging structure in the present utility model Figure 1 。

[0026] Figure 6 is Figure 5 the enlarged view of the structure at A in

[0027] Figure 7 is the explosion of the plugging structure in the present utility model Figure 2 。

[0028] Figure 8 is the decomposition of the template in the present utility model Figure 1 。

[0029] Figure 9 is the decomposition of the template in the present utility model Figure 2 。

[0030] Figure 10 is Figure 9 the enlarged view of the structure at B in

[0031] The corresponding relationship between the labels of each component in the figure and the component names is as follows:

[0032] 1. First template; 11. First connecting groove; 12. Grouting pipe; 2. Second template; 21. First plugboard; 3. Extension template; 31. Second plugboard; 32. Second connecting groove; 4. Rubber gasket; 5. Geotextile; 51. Water diversion strip; 52. Nail hole; 6. Wall nail; 61. Nail head; 62. Baffle strip; 7. Clay layer; 8. Contact nail; 9. Expansion tube; 91. Countersunk bolt; 10. Wire mesh; 13. Rib. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0036] Figures 1 - 3 Schematic diagram of the tunnel anti-seepage plugging structure in this embodiment. The plugging structure in this embodiment includes a first template 1 and a second template 2. Figure 8 as well as Figure 9 As shown, a first connection groove 11 is provided at the port of the first template 1, a first plug plate 21 is integrally connected to the port of the second template 2, and the first plug plate 21 is assembled with the first connection groove 11 so that the first template 1 and the second template 2 form a casting mold, and a grouting pipe 12 is provided on the side of the first template 1, and concrete is poured into the casting mold by the grouting pipe 12, and the water seepage surface is fully blocked by the concrete, as shown in FIG. Figures 2 - 5 As shown, the tunnel anti-seepage blocking structure in this embodiment also includes a geotextile 5, which has a water-absorbing function, and one end of the geotextile 5 is connected to a water diversion strip 51, which extends to the outside of the casting mold. The water absorbed by the geotextile 5 is guided out through the water diversion strip 51 to avoid the problem of water accumulation. A clay layer 7 is adhered to one side of the geotextile 5 relative to the casting mold. The clay layer 7 is made of a hardenable material. In this embodiment, the clay layer 7 can further block the water seepage channel after hardening, and the area of ​​the geotextile 5 is smaller than the surface of the clay layer 7. The area of ​​the accumulation and cement layer 7 is smaller than the inner cavity area of ​​the casting mold. A plurality of resistance nails 8 are evenly penetrated on the casting mold. The ends of the resistance nails 8 abut against the surface of the cement layer 7. The resistance nails 8 effectively fix the cement layer to prevent it from shifting. Fastening bolts are penetrated at the four corners of the casting mold. On the one hand, the fastening bolts can fix the casting mold at the water seepage place. On the other hand, the fastening bolts are inserted into the gaps at the water seepage places. The fastening bolts are hollow structures and can inject plugging slurry into the gaps to fill the internal cracks in the water seepage area and enhance the anti-water seepage effect.

[0037] Refer to Figure 5 , in this embodiment, the fastening bolt is composed of an expansion tube 9 and a countersunk head bolt 91 inserted therein. The countersunk head bolt 91 is a hollow structure for injecting leak-stopping mortar. A nut is threadedly connected to the countersunk head bolt 91. In this embodiment, by rotating the nut on the countersunk head bolt 91, the countersunk head bolt 91 moves outward. During the movement of the countersunk head bolt 91, the expansion tube 9 is expanded, so that the casting mold composed of the first template 1 and the second template 2 is firmly fixed in the water seepage area. The hollow countersunk head bolt 91 can inject leak-stopping mortar, and the leak-stopping mortar can be supplemented and injected when needed to enhance the anti-seepage effect.

[0038] Refer to Figure 5 and Figure 6 , in this embodiment, a plurality of nail holes 52 are evenly formed in the geotextile 5, and wall nails 6 are inserted into the nail holes 52. The geotextile 5 is tightly fixed in the water seepage area by using the wall nails 6. Further, a nail cap 61 is provided at one end of the wall nail 6, and the nail cap 61 can effectively fix the geotextile 5 in the water seepage area. Still further, in this embodiment, a plurality of receiving grooves are formed in a circumferential and equidistant manner in the middle of the wall nail 6, and a retaining strip 62 is connected to the receiving grooves through a torsion spring. After the wall nail 6 is inserted into the wall, the friction force is increased by the retaining strip 62, ensuring the stability of the wall nail 6, thereby improving the fixing effect of the geotextile 5.

[0039] Refer to Figure 5 and Figure 7 , a convex platform structure is provided at one end of the abutting nail 8 in contact with the clay layer 7. The abutting nail 8 uses the convex platform structure to increase the contact surface with the clay layer 7, thereby increasing the contact surface between the abutting nail 8 and the clay layer 7 and further enhancing the stability of the clay layer 7.

[0040] Refer to Figure 4 , Figure 9 and Figure 10 , in this embodiment, convex strips 13 are provided on the inner surfaces of the first template 1 and the second template 2, and wire meshes 10 are provided on the convex strips 13. When injecting anti-leakage mortar into the casting mold through the grouting pipe 12, the strength is increased through the wire meshes, effectively preventing cracking and causing secondary water seepage. To ensure the casting effect, a space is left between the convex strips 13 and the clay layer 7 for concrete to fill and wrap the wire meshes 10.

[0041] When the water seepage area is large, in this embodiment, the area of the casting mold is expanded to improve the anti-seepage effect. Specifically, as Figure 8 and Figure 9As shown, an extension template 3 is provided between the first template 1 and the second template 2. The pouring mold increases its area through the added extension template 3. One end of the extension template 3 connected to the first template 1 is provided with a second plug board 31, and one end of the extension template 3 connected to the second template 2 is provided with a second connection groove 32. Through the second plug board 31 and the second connection groove 32, the extension template 3 can be docked with the first template 1 and the second template 2, increasing the area of the pouring mold, adapting to leakage areas of different sizes, and can be used for tunnel anti-seepage projects of various scales.

[0042] Refer to Figure 8 and Figure 9 , in this embodiment, round holes for installing fastening bolts and abutting nails 8 are provided on the extension template 3. Rubber gaskets 4 are embedded on the first template 1, the second template 2, and the extension template 3, and the rubber gaskets 4 are used to seal the gap between the pouring mold and the water seepage surface.

[0043] The above content is a further detailed description of the present invention in combination with specific implementation manners. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope determined by the claims submitted for the present invention.

Claims

1. A tunnel anti-seepage plugging structure, comprising a first template (1) and a second template (2), characterized in that: A first connecting groove (11) is provided at the end of the first template (1), a first plug plate (21) is connected to the end of the second template (2), and the first plug plate (21) is assembled with the first connecting groove (11) so that the first template (1) and the second template (2) form a casting mold, and a grouting pipe (12) is provided on the side of the first template (1); The tunnel anti-seepage plugging structure also includes a geotextile (5), a clay layer (7) being adhered to a surface of the geotextile (5) opposite to the casting mold, a plurality of abutment pins (8) being provided through the casting mold, the ends of the abutment pins (8) being in contact with the surface of the clay layer (7), and fastening bolts being provided through the four corners of the casting mold, and the fastening bolts being of a hollow structure.

2. The tunnel anti-seepage plugging structure according to claim 1, characterized in that: The fastening bolt is composed of an expansion tube (9) and a countersunk bolt (91) inserted therein; the countersunk bolt (91) is a hollow structure used for injecting plugging slurry.

3. The tunnel anti-seepage plugging structure according to claim 2, characterized in that: The geotextile (5) is evenly provided with a plurality of nail holes (52), wall nails (6) are inserted into the nail holes (52), and a nail cap (61) is provided at one end of the wall nail (6), and the geotextile (5) is fixed at the water seepage location by means of the nail cap (61).

4. The tunnel anti-seepage plugging structure according to claim 3, characterized in that: The middle part of the wall nail (6) is provided with a plurality of accommodating grooves at equal intervals in a circular shape, and a retaining bar (62) is rotatably connected in the accommodating groove via a torsion spring.

5. The tunnel anti-seepage plugging structure according to claim 1, characterized in that: One end of the abutment pin (8) that contacts the mastic layer (7) is provided with a boss structure, and the abutment pin (8) increases the contact surface with the mastic layer (7) by utilizing the boss structure.

6. The tunnel anti-seepage plugging structure according to claim 5, characterized in that: The inner surfaces of the first template (1) and the second template (2) are provided with convex strips (13), and wire meshes (10) are provided on the convex strips (13).

7. The tunnel anti-seepage plugging structure according to claim 1, characterized in that: The area of ​​the geotextile (5) is smaller than the area of ​​the clay layer (7), the area of ​​the clay layer (7) is smaller than the area of ​​the inner cavity of the casting mold, and the clay layer (7) is made of a hardenable material.

8. The tunnel anti-seepage plugging structure according to claim 1, characterized in that: An extension template (3) is added between the first template (1) and the second template (2); the area of ​​the casting mold is increased by the added extension template (3); a second plug plate (31) is provided at one end of the extension template (3) connected to the first template (1); and a second connection groove (32) is provided at one end of the extension template (3) connected to the second template (2).

9. The tunnel anti-seepage plugging structure according to claim 8, wherein: The extension template (3) is provided with round holes for installing fastening bolts and abutment pins (8).

10. The tunnel anti-seepage plugging structure according to claim 8, characterized in that: The ports of the first template (1), the second template (2) and the extended template (3) are provided with mounting grooves, and rubber sealing pads (4) are embedded in the mounting grooves.

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