Filtering and filling device on longitudinal blind pipe at waterproof and drainage side wall of tunnel
By using shrinkable plastic mesh and crushed stone to replace no-fines concrete in tunnel waterproofing and drainage, combined with support and fixing structures, the problem of no-fines concrete prefabrication was solved, achieving efficient and stable tunnel waterproofing and drainage.
Patent Information
- Application Number
- CN202423233094.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The shape of the precast, sand-free concrete above the longitudinal blind pipe in existing tunnel waterproofing and drainage systems is difficult to control, resulting in a messy structure, inconsistent dimensions, and difficulty in controlling the mix ratio. The pass rate is low, and precasting requires a large number of molds and sites, making transportation and installation inconvenient and easily damaging to the waterproof membrane.
Shrinkable plastic mesh and crushed stone are used instead of no-fines concrete. They are fixed to the blind pipe by a support mechanism and an anchoring mechanism. The plastic mesh and crushed stone are used to filter impurities and seep water. The blind pipe fixing structure prevents displacement and reduces the need for precast concrete.
It reduces costs, improves construction efficiency and quality, avoids damage to concrete edges and corners, ensures that the waterproof membrane is not damaged, and makes construction more stable and efficient.
Smart Images

Figure CN223923087U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel waterproofing and drainage, and in particular to a filter filling device on a longitudinal blind pipe at the sidewall of a tunnel waterproofing and drainage system. Background Technology
[0002] With the rapid development of infrastructure projects such as high-speed railways in my country, tunnel engineering is becoming increasingly common. Tunnel waterproofing and drainage is a crucial process for ensuring the quality of tunnel construction and its subsequent operation. In existing tunnel waterproofing and drainage systems, a layer of no-fines concrete needs to be laid on top of the longitudinal blind pipes to filter out debris and prevent water seepage into the blind pipes. Currently, no-fines concrete is prefabricated outside the tunnel during construction. However, the shape of prefabricated no-fines concrete is difficult to control, resulting in a chaotic structure, inconsistent dimensions, and difficulty in controlling the mix ratio, leading to a low pass rate. Furthermore, prefabrication requires a large number of molds and a prefabrication and storage area, making transportation and installation inconvenient. The concrete edges are easily damaged, and the waterproofing membrane is easily damaged. Therefore, this application proposes a filter filling device for the longitudinal blind pipes at the tunnel waterproofing and drainage sidewalls. Utility Model Content
[0003] The purpose of this utility model is to address the problems in the background technology that precast sand-free concrete has difficulty in controlling its shape, has a messy structure, inconsistent dimensions, difficulty in controlling the mix ratio, low qualification rate, and requires a large number of molds and a precast and storage site, making transportation and installation inconvenient, and the concrete edges and corners are easily damaged, and the waterproof membrane is easily damaged. The present invention proposes a filter filling device on the longitudinal blind pipe at the tunnel drainage sidewall.
[0004] The technical solution of this utility model is: a filter filling device on a longitudinal blind pipe at the sidewall of a tunnel, including a side plate and a support mechanism fixed to the inner wall of the side plate. The support mechanism includes a through rod fixed to one side of two side plates. Multiple through plates pass through the outer walls of multiple through rods. A filter filling structure is provided at the top of multiple through rods.
[0005] A central support plate is fixedly connected to one side of the top of each of the multiple through plates, and an end support plate is fixedly connected to the top of two of the central support plates. An anchoring mechanism is provided between the central support plate and the end support plate.
[0006] Both side plates are fixedly connected to the bottom end of each side plate, and a through shaft runs through one side of each of the two connecting blocks. A blind tube fixing structure is provided on the outer wall of the through shaft.
[0007] Optionally, the filter filling mechanism includes multiple plastic mesh belts placed on a through rod, each plastic mesh belt being made of plastic mesh cut into sections of 30-60 cm in length, the diameter of which can be reduced to five to twelve millimeters.
[0008] Optionally, the inner walls of multiple plastic mesh belts are filled with crushed stone, which is made from stones with a diameter of two to three centimeters selected from the mixing plant.
[0009] Optionally, the anchoring mechanism includes connecting blocks fixed to one side of the end support plate and the middle support plate, fixing blocks fixedly connected to one side of the multiple connecting blocks, connecting plates fixedly connected to one side of the multiple fixing blocks, and multiple anchor bolts passing through one side of the multiple connecting plates.
[0010] Optionally, the blind tube fixing structure includes rotating rings fixed to the through shaft, and retaining rings are fixedly connected to one side of the outer wall of the two rotating rings.
[0011] Optionally, the ends of the two retaining rings furthest from the rotating ring are fixedly connected to embedded steel plates, and two anchor bolts pass through one side of the two embedded steel plates.
[0012] Optionally, one side of each of the multiple anchor bolts is fixed to the external initial support, and the two retaining rings are engaged with the outer wall of the external blind pipe.
[0013] Compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0014] This device uses a shrinkable plastic mesh belt and crushed stone to replace the traditional no-fines concrete on the longitudinal blind pipe. The crushed stone filters impurities and allows water to seep in, eliminating the need for precast no-fines concrete for filtration, saving costs and improving construction efficiency.
[0015] Furthermore, the aggregate and mesh belt are supported above the blind pipe by an anchoring mechanism to prevent aggregate from falling and damaging the blind pipe. The blind pipe fixing mechanism prevents the blind pipe from shifting. The use of plastic mesh and aggregate reduces costs and improves construction efficiency. Pre-made bagged aggregate is transported to the site for manual installation, which effectively improves production efficiency and construction quality. The bagged aggregate has a certain degree of mobility and can be completely filled according to the size of the gaps in the longitudinal blind pipe without damaging the waterproof membrane. The technology is easy to master and easy to process. Attached Figure Description
[0016] Figure 1 A three-dimensional structural schematic diagram of a filter filling device on a longitudinal blind pipe at the tunnel drainage sidewall is provided.
[0017] Figure 2 This is a schematic diagram of the side plate connection structure;
[0018] Figure 3 This is a schematic diagram of a snap ring connection structure;
[0019] Figure 4This is a multi-angle three-dimensional structural diagram of a filter filling device on a longitudinal blind pipe at the sidewall of a tunnel for drainage and waterproofing.
[0020] Reference numerals in the attached drawings: 1. Side plate; 2. End support plate; 3. Connecting block; 4. Fixing block; 5. Connecting plate; 6. Anchor bolt one; 7. Through rod; 8. Through plate; 9. Yarn belt; 10. Crushed stone; 11. Middle support plate; 12. Through shaft; 13. Connecting clip; 14. Rotating ring; 15. Snap ring; 16. Embedded steel plate; 17. Anchor bolt two. Detailed Implementation
[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0022] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0023] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] Example 1
[0028] like Figure 1 As shown, the present invention proposes a filter filling device for a longitudinal blind pipe at the tunnel drainage sidewall, which includes a side plate 1 and a support mechanism fixed to the inner wall of the side plate 1. The support mechanism includes a through rod 7 fixed to one side of the two side plates 1. Multiple through plates 8 pass through the outer wall of the multiple through rods 7. A filter filling structure is provided at the top of the multiple through rods 7.
[0029] With the above configuration, the device can support the crushed stone 10 through the through rod 7 of the support mechanism, and fix multiple fixing blocks 4 through the side plate 1 and the through plate 8. By using a retractable plastic mesh belt 9 and crushed stone 10 to replace the traditional sandless concrete on the longitudinal blind pipe, the crushed stone 10 plays a role in filtering impurities and water seepage, reducing costs and improving construction efficiency.
[0030] like Figure 2 As shown, a middle support plate 11 is fixedly connected to one side of the top of multiple through plates 8, and an end support plate 2 is fixedly connected to the top of two middle support plates 11. An anchoring mechanism is provided between the middle support plate 11 and the end support plate 2. The connecting plate 5 and the anchoring bolt 6 on the fixing block 4 in the anchoring mechanism enable the entire device to be supported and fixed on the external support, preventing the device from collapsing and crushing the blind pipe, making the blind pipe more stable in use.
[0031] like Figure 3 As shown, the bottom ends of the two side plates 1 are fixedly connected with connecting blocks 13, and one side of each connecting block 13 is penetrated by a through shaft 12. The outer wall of the through shaft 12 is provided with a blind tube fixing structure. By setting the blind tube fixing structure, the device can fix the blind tube by the retaining ring 15. By pre-embedding the pre-embedded steel plate 16 into the external support, the retaining ring 15 is fixed by the anchor bolt 17, making the blind tube more stable when in use and preventing the blind tube from being misaligned.
[0032] In this embodiment, the crushed stone 10 is supported by the through rod 7 of the support mechanism. Multiple fixing blocks 4 are fixed by the side plate 1 and the through plate 8. The traditional no-fines concrete on the longitudinal blind pipe is replaced by a retractable plastic mesh belt 9 and crushed stone 10. The crushed stone 10 filters impurities and seepage, reducing costs and improving construction efficiency. The connecting plate 5 and anchor bolt 6 on the fixing block 4 in the anchoring mechanism support and fix the entire device on the external support, preventing the device from collapsing and damaging the blind pipe, making the blind pipe more stable. By setting the blind pipe fixing structure, the device can fix the blind pipe by the retaining ring 15. By pre-embedding the pre-embedded steel plate 16 into the external support and fixing the retaining ring 15 by the anchor bolt 17, the blind pipe is more stable during use and prevents the blind pipe from deviating.
[0033] Example 2
[0034] like Figure 1 - Figure 4 As shown, based on Embodiment 1, the filter filling mechanism includes multiple plastic mesh belts 9 placed on the through rod 7. The multiple plastic mesh belts 9 are all made of plastic mesh with a diameter that can be shrunk by five to twelve millimeters, cut into sections of fifty centimeters each. By setting the plastic mesh belts 9, the gravel 10 can be wrapped and placed above the blind pipe.
[0035] The inner walls of multiple plastic mesh belts 9 are filled with crushed stone 10. The crushed stone 10 is made of stones with a diameter of two to three centimeters selected from the mixing plant. By setting the crushed stone 10, impurities and water seepage are filtered out, so that the device no longer needs to use precast sand-free concrete for filtration, saving costs and improving construction efficiency.
[0036] The anchoring mechanism includes connecting blocks 3 fixed to one side of the end support plate 2 and the middle support plate 11. Fixing blocks 4 are fixedly connected to one side of each connecting block 3, and connecting plates 5 are fixedly connected to one side of each fixing block 4. Multiple anchor bolts 6 pass through one side of each connecting plate 5. By setting the connecting blocks 3, the fixing blocks 4 are fixed to the middle support plate 11 and the end support plate 2. By setting the connecting plates 5 and the anchor bolts 6, the device is fixed to the initial support.
[0037] The blind tube fixing structure includes rotating rings 14 fixed on the through shaft 12. Two rotating rings 14 have retaining rings 15 fixedly connected to one side of their outer walls. By setting the retaining rings 15, the blind tube can be fixed inside the retaining rings 15.
[0038] Two retaining rings 15 are fixedly connected to embedded steel plates 16 at the ends away from the rotating ring 14. Two anchor bolts 17 pass through one side of the two embedded steel plates 16. By setting the embedded steel plates 16 and the anchor bolts 17, the retaining rings 15 can be fixed on the initial support.
[0039] One side of each of the multiple anchor bolts 17 is fixed to the external initial support, and two retaining rings 15 are engaged with the outer wall of the external blind pipe. Through the above arrangement, the device can be fixed on the initial support to filter water in the blind pipe.
[0040] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A filter filling device for longitudinal blind pipes at tunnel waterproofing side walls, comprising a side plate (1) and a supporting mechanism fixed to the inner wall of the side plate (1), characterized in that: The supporting mechanism comprises through rods (7) fixed to one side of the two side plates (1), the outer walls of the through rods (7) are penetrated by through plates (8), and the top ends of the through rods (7) are provided with filter filling structures; The top ends of the through plates (8) are fixedly connected with middle supporting plates (11), the top ends of the two middle supporting plates (11) are fixedly connected with end supporting plates (2), and an anchoring mechanism is arranged between the middle supporting plates (11) and the end supporting plates (2); The bottom ends of the two side plates (1) are fixedly connected with connecting clamping blocks (13), the through shafts (12) penetrate one side of the two connecting clamping blocks (13), and the outer walls of the through shafts (12) are provided with blind pipe fixing structures.
2. A filter filling device for longitudinal blind pipes on a tunnel waterproofing side wall according to claim 1, characterized in that, The filter filling mechanism comprises a plurality of plastic mesh belts (9) placed on the through rods (7), the plastic mesh belts (9) are all made of plastic mesh belts with a length of 30-60 cm cut from plastic mesh, and the diameter of the plastic mesh can be contracted to five to twelve millimeters.
3. A filter filling device for longitudinal blind pipes on a tunnel waterproofing side wall according to claim 2, characterized in that, The inner walls of the plastic mesh belts (9) are all filled with gravel (10), and the gravel (10) is made of two to three centimeter diameter stones selected from a mixing station.
4. A filter and filler device for longitudinal blind pipes on a tunnel waterproofing side wall according to claim 1, characterized in that, The anchoring mechanism comprises connecting blocks (3) fixed to one side of the end supporting plates (2) and the middle supporting plates (11), the one sides of the connecting blocks (3) are fixedly connected with fixed blocks (4), the one sides of the fixed blocks (4) are fixedly connected with connecting plates (5), and the one sides of the connecting plates (5) are penetrated by a plurality of anchor bolts (6).
5. A filter and filler device for longitudinal blind pipes on a tunnel waterproofing side wall according to claim 1, characterized in that, The blind pipe fixing structure comprises rotating rings (14) fixed to the through shafts (12), and the outer walls of the two rotating rings (14) are fixedly connected with clamping rings (15).
6. A filter and filler device for a blind longitudinal pipe on a tunnel waterproofing side wall according to claim 5, characterized in that, The ends of the two clamping rings (15) away from the rotating rings (14) are fixedly connected with pre-buried steel plates (16), and the one sides of the two pre-buried steel plates (16) are penetrated by two anchor bolts (17).
7. A filter and filler device for a blind longitudinal pipe on a tunnel waterproofing side wall according to claim 6, characterized in that, The one sides of the anchor bolts (17) are all fixed to external primary supports, and the two clamping rings (15) are clamped to the outer walls of external blind pipes.