Underground pipe gallery end plugging structure
By using a sealing structure that combines a waterstop strip with a plain concrete protective block at the end of the underground utility tunnel, the problems of water and soil pressure and waterproofing were solved, enabling convenient removal and effective sealing, and enhancing the waterproofing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-31
AI Technical Summary
Existing technologies cannot meet the water and soil pressure requirements at the ends of underground utility tunnels, and the sealing structure is prone to water seepage. Furthermore, the sealing is difficult to remove when the utility tunnel is reconnected later, resulting in poor waterproofing performance.
The sealing structure combines waterstops with plain concrete protective blocks, including bending and connecting parts. It has plain concrete protective blocks on the outside and deformable sealing walls on the inside. The sealing walls consist of a waterproof mortar layer, a brick wall layer, a leveling layer and a waterproof membrane layer, forming a four-layer waterproof barrier. Protruding rings are set in the pipe gallery body to enhance the waterproof effect.
This design achieves the goal of meeting water and soil pressure requirements while facilitating the removal of the sealing structure, ensuring effective sealing and waterproofing at the ends of the utility tunnel, reducing the risk of water seepage, and improving the convenience of continuing the utility tunnel connection.
Smart Images
Figure CN224063507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of underground utility tunnel technology, and in particular to an end sealing structure for underground utility tunnels. Background Technology
[0002] In metallurgical engineering, the construction of an entire plant area is often carried out in phases. Therefore, underground utility tunnels housing pipelines within the plant area frequently need to be extended and reconnected later. If the ends of the early-constructed underground utility tunnels are sealed with cast-in-place reinforced concrete as per the standard design, removing the reinforced concrete during later extensions presents difficulties. Furthermore, the junction between the new and old utility tunnels after excavation is prone to groundwater seepage. If the ends of the early-constructed underground utility tunnels are not sealed with cast-in-place reinforced concrete as per the standard design, ensuring the structural integrity and waterproofing of the sealed ends during the first few years of use, and guaranteeing waterproofing during later extensions, becomes a significant challenge.
[0003] Currently, in addition to sealing with cast-in-place reinforced concrete, steel plates are also commonly used for sealing, with the plates being removed and the tunnel extended later when the tunnel is reconnected. However, metallurgical tunnels are generally buried at a depth of about 8 meters underground, where the water and soil pressure on the outer surface is high. Even with reinforcement measures, the steel plate sealing will gradually deform under the water and soil pressure, which can easily cause cracks and water seepage at the welds. At the same time, the steel plates are prone to corrosion in the groundwater environment, leading to water seepage at the welds. Utility Model Content
[0004] The purpose of this utility model is to provide an end-sealing structure for underground utility tunnels, which solves the problems that existing end-sealing technologies cannot simultaneously meet the water and soil pressure requirements on the outer surface and prevent water seepage, make the end-sealing easy to remove when continuing to build the utility tunnel, and ensure good waterproofing at the junction of the continued utility tunnel and the old utility tunnel.
[0005] The above-mentioned objectives of this utility model can be achieved by the following technical solutions:
[0006] This utility model provides an end sealing structure for an underground utility tunnel, comprising: a utility tunnel body; a waterstop strip having a bent portion and a first connecting portion and a second connecting portion connected to both sides of the bent portion, the first connecting portion being embedded in the wall panel of the utility tunnel body, and plain concrete protective blocks being provided outside the bent portion and the second connecting portion, the plain concrete protective blocks being connected to the wall panel of the utility tunnel body; and a sealing wall having a first sealing portion and a second sealing portion connected to each other, the first sealing portion being connected to the interior of the utility tunnel body, and the second sealing portion being connected to the end of the utility tunnel body, both the first sealing portion and the second sealing portion being made of a material with a certain degree of deformability.
[0007] Preferably, each wall panel of the pipe gallery body extends inward to form a protruding ring, and the protruding ring is embedded in the first sealing part.
[0008] Preferably, the protruding ring extends at least 200 mm from the end of the tube gallery body.
[0009] Preferably, the sealing wall comprises a waterproof mortar layer, a brick wall layer, a leveling layer, and a rolled waterproof membrane layer arranged sequentially. The waterproof mortar layer and the brick wall layer are connected to form the first sealing part, and the leveling layer and the rolled waterproof membrane layer are connected to form the second sealing part.
[0010] Preferably, the waterproof mortar layer is provided with an orthogonal steel mesh, which is fixed to the wall panel of the pipe gallery body by anchoring.
[0011] Preferably, the waterproof membrane is adhered to the leveling layer, and the waterproof membrane is anchored to the leveling layer by anchors.
[0012] Preferably, the thickness of the leveling layer is 20mm to 30mm.
[0013] Preferably, the plain concrete protective block is made of C20 plain concrete.
[0014] Preferably, the shortest distance from the outer wall of the plain concrete protective block to the waterstop is not less than 100mm.
[0015] Preferably, the connecting portion pre-embedded in the wall panel of the pipe gallery body is located at the center of the wall thickness of the wall panel of the pipe gallery body.
[0016] The features and advantages of this utility model are as follows: The underground utility tunnel end sealing structure provided by this utility model protects the waterstop by setting up plain concrete protective blocks, while also taking into account the ease of dismantling. Furthermore, by setting up a sealing wall with a first sealing part and a second sealing part, it meets the water and soil pressure requirements on the outside of the sealing wall while facilitating dismantling, thus ensuring the effective sealing of the end of the utility tunnel body. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of the underground utility tunnel end sealing structure provided in this embodiment of the present invention in the sealing state;
[0019] Figure 2 for Figure 1 Sectional view along direction AA.
[0020] Figure 3 This is a partial structural diagram of the underground utility tunnel end sealing structure provided in this embodiment of the present invention in a sealed state;
[0021] Figure 4 This is a schematic diagram of the underground utility tunnel end sealing structure provided in this embodiment of the present invention, under the condition of removing the sealing wall and plain concrete protective block;
[0022] Figure 5 This is a schematic diagram of the structure of the pipe gallery body after splicing provided in the embodiment of this utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the waterstop provided in the embodiment of this utility model.
[0024] Explanation of icon numbers:
[0025] 1. Utility tunnel body; 11. Top slab; 12. Side walls; 13. Floor slab;
[0026] 2. Waterstop strip; 21. Bending part; 22. First connecting part; 23. Second connecting part;
[0027] 3. Sealing wall; 31. Waterproof mortar layer; 32. Brick wall layer; 33. Leveling layer; 34. Rolled waterproof membrane layer;
[0028] 4. Plain concrete protective block;
[0029] 5. Protruding ring. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] like Figures 1 to 3 As shown, this utility model provides an end-sealing structure for an underground utility tunnel, including a tunnel body 1, a waterstop 2, and a sealing wall 3. See also... Figure 6As shown, the waterstop 2 has a bent portion 21 and a first connecting portion 22 and a second connecting portion 23 connected to both sides of the bent portion 21. The first connecting portion 22 is embedded in the wall panel of the pipe gallery body 1. Plain concrete protective blocks 4 are provided outside the bent portion 21 and the second connecting portion 23, and the plain concrete protective blocks 4 are connected to the wall panel of the pipe gallery body 1. The sealing wall 3 has a first sealing portion and a second sealing portion connected to each other. The first sealing portion is connected to the interior of the pipe gallery body 1, and the second sealing portion is connected to the end of the pipe gallery body 1. Both the first sealing portion and the second sealing portion are made of a material with a certain degree of deformability, such as bricks that are relatively softer than reinforced concrete, so as to facilitate the removal of the sealing wall 3 when continuing the pipe gallery. Preferably, the second sealing portion is connected to the plain concrete protective block 4 to improve the overall stability of the sealing structure at the end of the underground pipe gallery. In this embodiment, the first connecting portion 22 and the second connecting portion 23 of the waterstop 2 are symmetrically arranged about the bent portion 21 to ensure that the joint section can obtain a better waterproof effect when continuing the pipe gallery.
[0032] The underground utility tunnel end sealing structure provided by this utility model protects the waterstop 2 with plain concrete protective blocks 4 and also ensures easy dismantling. It also provides a sealing wall 3 with a first sealing part and a second sealing part to meet the water and soil pressure requirements on the outside of the sealing wall 3 while facilitating dismantling, thus ensuring effective sealing of the end of the utility tunnel body 1.
[0033] Specifically, such as Figures 1 to 3 As shown, the wall panels of the utility tunnel body 1 include a top plate 11, side walls 12, and a bottom plate 13. A waterstop 2 is pre-embedded around the perimeter of the top plate 11, side walls 12, and bottom plate 13 at the front edge of the end of the utility tunnel body 1 formed by concrete pouring. The first connecting part 22 of the waterstop 2 is embedded inside the utility tunnel body 1, while the second connecting part 23 and the intermediate bend 21 of the waterstop 2 are exposed. Then, plain concrete is used to wrap the exposed portion of the waterstop 2 to form a plain concrete protective block 4, protecting the exposed portion of the waterstop 2 from corrosion and damage by groundwater and soil, thereby ensuring that the waterstop 2 still has good waterproof performance when the utility tunnel is subsequently connected. Preferably, the waterstop 2 is a stainless steel plate waterstop 2 to ensure its service life.
[0034] According to a preferred embodiment of this utility model, to facilitate the removal of the plain concrete protective block 4 during the connection of the pipe corridor, the plain concrete protective block 4 is made of C20 plain concrete. This ensures both the strength of the plain concrete protective block 4 and its removability.
[0035] According to a preferred embodiment of this utility model, to balance good demolition performance and protective effect, the shortest distance from the outer wall of the plain concrete protective block 4 to the waterstop 2 is not less than 100mm. In this embodiment, the shortest distance from the outer wall of the plain concrete protective block 4 wrapped around the waterstop 2 to the waterstop 2 is 100mm, that is, the wrapping thickness of the plain concrete protective block 4 is 100mm, so as to effectively isolate the waterstop 2 from contact with groundwater and soil, and protect the exposed part of the waterstop 2 from corrosion and damage by groundwater and soil. When it is necessary to reconnect the pipe gallery later, the C20 plain concrete can be removed and cleaned with a small hammer to expose the originally exposed part of the waterstop 2.
[0036] According to a preferred embodiment of the present invention, such as Figure 3 As shown, the sealing wall 3 includes a waterproof mortar layer 31, a brick wall layer 32, a leveling layer 33, and a rolled waterproof membrane layer 34 arranged sequentially. The waterproof mortar layer 31 and the brick wall layer 32 are connected to form the first sealing part, and the leveling layer 33 and the rolled waterproof membrane layer 34 are connected to form the second sealing part. By setting the waterproof mortar layer 31, the brick wall layer 32, the leveling layer 33, and the rolled waterproof membrane layer 34, a four-layer waterproof barrier sealing structure is formed, which effectively blocks water and soil on the outside of the end of the pipe gallery body 1, while taking into account the convenience of construction and demolition. In this embodiment, the thickness of the brick wall layer 32 is 490mm to effectively withstand the water and soil pressure on the outside of the end of the pipe gallery body 1.
[0037] Specifically, the cast-in-place reinforced concrete sealing is quite difficult to cut and chisel due to its hardness, and the impact force during chiseling can easily cause cracks in the wall panels of the pipe gallery body 1 that are connected to it. In contrast, the sealing wall 3, which is composed of a waterproof mortar layer 31, a brick wall layer 32, a leveling layer 33, and a rolled waterproof layer 34, is relatively softer than reinforced concrete, making it easier to cut and chisel. Moreover, the impact force generated during cutting and chiseling is smaller and will not affect the wall panels of the pipe gallery body 1.
[0038] According to a preferred embodiment of this utility model, an orthogonal steel mesh is provided within the waterproof mortar layer 31, and the orthogonal steel mesh is fixed to the wall panel of the pipe gallery body 1 by rebar anchoring. This ensures the structural strength of the waterproof mortar layer 31. Preferably, the orthogonal steel mesh is disposed in contact with the brick wall layer 32 to improve the overall structural strength of the sealing wall 3. In this embodiment, the orthogonal steel mesh is formed by orthogonally connecting Φ12@150 steel bars, and the thickness of the waterproof mortar layer 31 is 45mm to 50mm to protect the orthogonal steel mesh.
[0039] According to a preferred embodiment of the present invention, the roll waterproofing layer 34 is adhered to the leveling layer 33, and the roll waterproofing layer 34 is anchored to the leveling layer 33 by anchors to enhance the connection stability between the roll waterproofing layer 34 and the leveling layer 33. Preferably, the roll waterproofing layer 34 has self-adhesive for easy construction.
[0040] According to a preferred embodiment of the present invention, the thickness of the leveling layer 33 is 20mm to 30mm to ensure the connection stability between the second sealing part and the first sealing part, thereby ensuring the overall connection performance of the sealing wall 3.
[0041] For example, the construction process of the sealing wall 3 is as follows: The orthogonal steel mesh in the waterproof mortar layer 31 is tied, and holes are drilled around the mesh to anchor the reinforcing bars to the top slab 11, side walls 12, and bottom slab 13 of the pipe gallery body 1; a 490mm thick brick wall layer 32 is built on the outside of the orthogonal steel mesh; a 20mm-30mm thick waterproof mortar layer 33 is applied to the outside of the brick wall layer 32 to form a leveling layer 33; a self-adhesive waterproof membrane 34 is laid on the outside of the leveling layer 33; and a 45mm thick waterproof mortar layer 31 is applied to the innermost steel mesh to form a waterproof mortar layer 31. When the pipe gallery needs to be reconnected later, the sealing wall 3 can be removed and cleaned.
[0042] According to a preferred embodiment of the present invention, such as Figures 1 to 3 As shown, each wall panel of the utility tunnel body 1 extends inward to form a protruding ring 5, which is embedded in the first sealing section. By setting the protruding ring 5 inside the utility tunnel body 1, external groundwater is effectively prevented from seeping in along the contact surface between the inner wall of the utility tunnel body 1 and the sealing wall 3, adding a seepage barrier to the utility tunnel sealing. In this embodiment, the protruding ring 5 is embedded in the brick wall layer 32 to effectively prevent external groundwater from seeping in along the contact surface between the inner wall of the utility tunnel body 1 and the brick wall layer 32.
[0043] According to a preferred embodiment of this utility model, the protruding ring 5 extends at least 200mm from the end of the pipe rack body 1 to achieve a better waterproofing enhancement effect. In this embodiment, a 120mm×120mm cross-section protruding ring 5 is cast around the top plate 11, side wall 12, and bottom plate 13 at a distance of 200mm from the end of the pipe rack body 1. The protruding ring 5 and the pipe rack body 1 are made of the same grade of concrete and are cast simultaneously. The protruding ring 5 is anchored in the wall panel of the pipe rack body 1 by 8mm diameter steel bars. Since the protruding ring 5 is small in size, it has little impact on the internal space of the pipe rack body 1 and will not hinder the subsequent pipeline layout. Therefore, when the pipe rack needs to be continued later, the protruding ring 5 does not need to be removed.
[0044] According to a preferred embodiment of the present invention, the connecting portion embedded in the wall panel of the pipe gallery body 1 is located at the center of the wall thickness of the wall panel of the pipe gallery body 1. This provides better connection stability.
[0045] For example, the construction process for continuing the pipe gallery is as follows: remove the plain concrete protective block 4 and clean it; remove the sealing wall 3 and clean it; pour the continuing pipe gallery closely against the existing pipe gallery body 1, ensuring that there are waterstops 2 at the junctions of the side walls 12, top slab 11, and bottom slab 13 of the old and new pipe galleries. A schematic diagram of the structure after removing the sealing wall 3 and plain concrete protective block 4 at the end of the underground pipe gallery can be found here. Figure 4 As shown, see the structural schematic diagram of the pipe gallery body 1 after continuation. Figure 5 As shown.
[0046] Based on the above description, the underground utility tunnel end sealing structure provided by this utility model embodiment has the following beneficial effects:
[0047] The underground utility tunnel end sealing structure provided in this embodiment of the utility model uses plain concrete protective blocks 4 to protect the waterstop 2 while ensuring ease of dismantling. It also includes a sealing wall 3 with a first sealing section and a second sealing section to meet the water and soil pressure requirements on the outside of the sealing wall 3, ensuring effective sealing of the end of the utility tunnel body 1 while facilitating dismantling. The sealing wall 3 comprises a waterproof mortar layer 31, a brick wall layer 32, a leveling layer 33, and a rolled waterproof layer 34 arranged sequentially, forming a four-layer waterproof barrier sealing structure. This effectively blocks water and soil on the outside of the end of the utility tunnel body 1 while ensuring ease of construction and dismantling. Furthermore, by setting protruding rings 5 inside the utility tunnel body 1, it effectively prevents external groundwater from seeping in along the contact surface between the inner wall of the utility tunnel body 1 and the sealing wall 3, adding another layer of seepage prevention barrier to the utility tunnel sealing.
[0048] The above descriptions are merely a few embodiments of this utility model. Those skilled in the art can make various modifications or variations to the embodiments of this utility model based on the content disclosed in the application documents without departing from the spirit and scope of this utility model.
Claims
1. An underground pipe gallery end plugging structure, characterized by, The utility model relates to a pipe gallery structure, comprising: a pipe gallery body; a water stop belt having a bent part and a first connecting part and a second connecting part connected to both sides of the bent part, the first connecting part is embedded in the wallboard of the pipe gallery body, the bent part and the second connecting part are externally provided with concrete protection blocks, and the concrete protection blocks are connected with the wallboard of the pipe gallery body; a sealing wall having a first sealing part and a second sealing part connected, the first sealing part is connected to the inside of the pipe gallery body, the second sealing part is connected to the end of the pipe gallery body, and the first sealing part and the second sealing part are both made of a material with a certain degree of deformability.
2. The underground pipe rack end plugging structure according to claim 1, characterized in that, Each wallboard of the pipe gallery body extends inwardly to form a protruding ring, and the protruding ring is embedded in the first sealing part.
3. The underground pipe rack end plugging structure according to claim 2, characterized in that, The protruding ring is at least 200 mm from the end of the pipe gallery body.
4. The underground tunnel jacking end plug structure of claim 1, wherein, The sealing wall comprises a waterproof mortar layer, a brick wall layer, a leveling layer and a coiled material waterproof layer arranged in sequence, the waterproof mortar layer and the brick wall layer are connected to form the first sealing part, and the leveling layer and the coiled material waterproof layer are connected to form the second sealing part.
5. The underground pipe rack end plugging structure according to claim 4, characterized in that, The waterproof mortar layer is provided with a perpendicular steel mesh, and the perpendicular steel mesh is fixed on the wallboard of the pipe gallery body by means of anchoring.
6. The underground pipe rack end plugging structure according to claim 4, characterized by, The coiled material waterproof layer is adhered to the leveling layer, and the coiled material waterproof layer is anchored and connected with the leveling layer by means of an anchor.
7. The underground pipe rack end plugging structure according to claim 5, characterized by, The thickness of the leveling layer is 20-30 mm.
8. The underground tunnel jacking end plug structure as described in claim 1, wherein, The concrete protection blocks are made of C20 concrete.
9. The underground pipe rack end plugging structure according to claim 1 or 8, characterized by, The shortest distance from the outer wall of the concrete protection block to the water stop belt is not less than 100 mm.
10. The underground tunnel jacking end plug structure as described in claim 1, wherein, The connecting part embedded in the wallboard of the pipe gallery body is located at the wall thickness center of the wallboard of the pipe gallery body.