Waterproof board for tunnel

Abstract

The utility model provides a waterproof board for tunnel, including the board body, the board body is a plurality of, and the side of each board body and its adjacent side all are equipped with the water stop board, and the opposite side of each board body with water stop board all are equipped with the connecting groove that supplies the water stop board of another board body inserts, and the groove wall of each connecting groove all is equipped with the water -swelling material, and the side wall of each board body to the tunnel inner wall all is equipped with a plurality of protruding, and it has solved the leakage problem that the joint of the protective board assembly exists in prior art.

Description

Technical Field

[0001] This utility model relates to the field of tunnel waterproofing technology, and in particular to a waterproofing membrane for tunnels. Background Technology

[0002] With the expansion of underground engineering projects and the increasing complexity of construction environments, tunnel water leakage has become a core issue threatening structural safety and shortening service life. Groundwater infiltration easily leads to concrete corrosion, steel reinforcement rust, and frost heave damage, while also causing mechanical and electrical equipment failures and a surge in operating costs. Modern waterproofing systems, through a strategy of "combining prevention and drainage, and multiple layers of protection," form a synergistic protection system of structural self-waterproofing, flexible waterproofing layers, and drainage systems, becoming a key technical support for ensuring the safety of tunnels throughout their entire life cycle.

[0003] Waterproof membrane is the core material of flexible waterproof layer. It is mostly made of high molecular polymers (EVA, HDPE, ECB) and has the characteristics of high strength, corrosion resistance and puncture resistance. It is laid without nails or suspended with concealed fasteners and closely attached to the initial support surface to form a continuous and sealed barrier to block the seepage path of groundwater.

[0004] However, during the initial splicing of the waterproof membrane, due to the seams between the protective panels and the misalignment of the seams caused by various factors such as materials and geological environment, leakage is likely to occur at the seams. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a waterproof membrane for tunnels, which solves the problem of leakage at the joints of the protective membranes in existing technologies.

[0006] According to an embodiment of the present invention, a waterproof membrane for tunnels includes a plate body, which is composed of several pieces. Each plate body has a water-stop plate on one side and its adjacent side. Each plate body has a connecting groove on the side opposite to the water-stop plate for inserting the water-stop plate of another plate body. Each connecting groove has a water-swellable material on its groove wall. Each plate body has several protrusions on its side wall facing the inner wall of the tunnel.

[0007] Compared with the prior art, this utility model has the following beneficial effects: By setting water-stop plates on the adjacent sides of the plate body and opening connecting grooves on the opposite sides of the water-stop plates, multiple plates are connected and assembled through the concave-convex structure of the water-stop plates and the connecting grooves. Due to the presence of the water-stop plates, the flow path of seepage water is extended, thus playing a waterproof role. At the same time, due to the presence of water-swellable material in the connecting grooves, water that seeps into the connecting grooves through the joints between the plates is absorbed by the water-swellable material, thereby expanding and sealing the gaps in the connecting grooves, limiting further seepage of water, and ensuring the stable operation of the entire waterproof system.

[0008] Furthermore, each plate has several water guide channels on the side facing the inner wall of the tunnel.

[0009] Furthermore, each water guide channel is arranged along the diagonal direction of the plate.

[0010] Furthermore, each water channel has a permeable membrane on the side facing away from the main body.

[0011] Furthermore, the end of each connecting groove furthest from the plate is folded inward to form a binding edge.

[0012] Furthermore, each plate has a connection hole on the side near the connection groove, and each waterstop plate has an insertion hole corresponding to the countersunk hole.

[0013] Furthermore, the water guide grooves on each plate are connected to the water guide grooves on the other plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0015] Figure 2 This is an overall structural diagram from another perspective of an embodiment of the present utility model.

[0016] Figure 3 This is a side view of an embodiment of the present utility model.

[0017] Figure 4 This is a partial enlarged view of an embodiment of the present utility model.

[0018] In the above attached figures: 1. Plate; 2. Waterstop plate; 3. Water-swellable material; 4. Protrusion; 5. Water guide groove; 6. Permeable membrane; 7. Edge binding; 8. Connecting hole; 9. Insertion hole. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 3As shown in the figure, this utility model embodiment proposes a waterproof membrane for tunnels, including a plate body 1, which is composed of several pieces. Each plate body 1 has a water-stop plate 2 on one side and its adjacent side. Each plate body 1 has a connecting groove on the side opposite to the water-stop plate 2 for inserting the water-stop plate 2 of another plate body 1. Each connecting groove has a water-swellable material 3 on its groove wall. Each plate body 1 has several protrusions 4 on its side wall facing the inner wall of the tunnel. During the installation of the waterproof membrane, the tunnel inner wall has already undergone initial lining. The side of the membrane 1 with the protrusion 4 is tightly pressed against the tunnel lining surface. The protrusion 4 increases the friction between the membrane 1 and the lining surface, restricting displacement and ensuring the stability of the membrane 1 after installation. Specifically, the protrusion 4 can be of various structures such as arc-shaped or cylindrical. When assembling multiple membrane 1s, the waterstop 2 on the side of one membrane 1 is inserted into the connecting groove of another membrane 1. This process is repeated for several membrane 1s, end to end. The waterstop 2 on each membrane 1 is then inserted into the connecting groove of adjacent membrane 1s, thus sealing the joint between the two membrane 1s during assembly. The sealing method extends the water penetration path through a physical barrier, effectively preventing water seepage even under high water pressure. Specifically, the waterstop 2 can be made of steel or rubber. After installation, if water seepage occurs at the joints of the board 1 due to aging of the waterproof board or geological reasons, the seeping water will be absorbed by the water-swellable material 3. The water-swellable material 3 expands to several times its own size to form a dense waterstop barrier, further preventing groundwater seepage. Specifically, the water-swellable material 3 can be selected from existing materials, such as water-swellable rubber, superabsorbent resin, etc., thereby effectively preventing water seepage at the joints and ensuring the stable operation of the entire waterproof system.

[0021] like Figures 1 to 4 As shown, furthermore, each plate 1 has several water-guiding grooves 5 on the side facing the inner wall of the tunnel. In this embodiment, when water seeps into the surrounding rock of the inner wall of the tunnel during use, the seepage water will enter the water-guiding grooves 5 and be guided to a predetermined location (such as a reserved water collection groove or a drainage groove), thereby preventing the seepage water from accumulating between the main body and the inner wall of the tunnel and corroding the plate 1. In this way, the long-term stable operation of the tunnel waterproofing system is ensured by "draining".

[0022] like Figure 1 As shown, each water guide channel 5 is further arranged along the diagonal direction of the plate 1. Specifically, after the plate 1 is installed, the water guide channel 5 is in an inclined state, which can quickly drain the seepage water entering the guide channel to the predetermined position, reduce the residence time of seepage water, avoid seepage water from corroding the plate 1, and extend the service life of the plate 1.

[0023] like Figures 1 to 4As shown, furthermore, each water channel 5 is provided with a permeable membrane 6 on the side opposite to the main body. The permeable membrane 6 can be pre-embedded in the water channel 5 during the fabrication of the slab 1. Specifically, the permeable membrane 6 can be selected from existing technologies, such as permeable geomembrane or permeable geotextile. The presence of the permeable membrane 6 allows seepage water from the surrounding rock to enter the water channel 5 and be discharged to the predetermined location, while the soil in the surrounding rock cannot enter the water channel 5, thus ensuring the smooth flow of the water channel 5 and preventing seepage water in the water channel 5 from being blocked by soil.

[0024] like Figure 4 As shown, furthermore, the end of each connecting groove furthest from the plate is folded inward to form an edge 7. The edge 7 covers the water-swellable material 3 inside the connecting groove, restricting the displacement of the water-swellable material and preventing it from coming out of the connecting groove, reducing unnecessary trouble during installation, and also achieving better water absorption later.

[0025] like Figures 1 to 2 As shown, each plate has a connecting hole 8 on the side near the connecting groove, and each waterstop plate 2 has an insertion hole 9 corresponding to the countersunk hole. To improve the stability of the connection between the plates, after the waterstop plate 2 of one plate is inserted into the connecting groove of the other half, the insertion hole 9 on the waterstop plate 2 corresponds to the connecting hole 8. A bolt can be inserted into the insertion hole 9 of the waterstop plate 2 through the connecting hole 8, which serves to position the waterstop plate 2 and improve the connection strength between the two plates 1. Preferably, the connecting hole 8 is a threaded hole.

[0026] Furthermore, the water guide groove 5 on each plate 1 is connected to the water guide groove 5 on another plate 1. By arranging the water guide grooves 5 on the plates, the water guide grooves 5 on adjacent plates can be connected to form a continuous groove structure, which helps to quickly drain the seepage water to the predetermined point.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A waterproof membrane for tunnels, characterized in that, include: The plate (1) consists of several pieces. Each plate (1) has a water-stop plate (2) on one side and its adjacent side. Each plate (1) has a connecting groove on the opposite side to the water-stop plate (2) for the water-stop plate (2) of another plate (1) to be inserted. Each connecting groove has a water-swellable material (3) on its groove wall. Each plate (1) has several protrusions (4) on its sidewall facing the inner wall of the tunnel.

2. The waterproof membrane for tunnels as described in claim 1, characterized in that: Each plate (1) has several water guide channels (5) on the side facing the inner wall of the tunnel.

3. A waterproof membrane for tunnels as described in claim 2, characterized in that: Each water channel (5) is arranged along the diagonal of the plate (1).

4. A waterproof membrane for tunnels as described in claim 2, characterized in that: Each water channel (5) has a permeable membrane (6) on the side away from the main body.

5. A waterproof membrane for tunnels as described in claim 1, characterized in that: Each connecting groove has its end away from the plate folded inward to form a binding edge (7).

6. A waterproof membrane for tunnels as described in claim 1, characterized in that: Each plate has a connecting hole (8) on the side near the connecting groove, and each waterstop plate (2) has an insertion hole (9) corresponding to the countersunk hole.

7. A waterproof membrane for tunnels as described in claim 2, characterized in that: The water guide groove (5) on each plate (1) is connected to the water guide groove (5) on the other plate (1).

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