Repairable internal filter drainage pipes for slope protection structures
By designing a detachable internal filter drainage pipe, the problem of drainage pipe siltation and blockage was solved, achieving repairability and efficient drainage of the drainage pipe, reducing maintenance costs, and ensuring the stability and safety of the retaining wall.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AVIC GEOTECHN ENG INST
- Filing Date
- 2025-06-27
- Publication Date
- 2026-06-30
AI Technical Summary
The existing drainage pipes are prone to siltation and blockage after long-term use, which leads to the failure of drainage function. In addition, the filter structure is located behind the retaining wall and cannot be repaired, which affects the stability and safety of the retaining wall.
A detachable internal filter drain pipe is designed, including an outer drain pipe and a detachable inner drain pipe. The inner pipe is equipped with a filter element, which filters the water by setting the filter element in the inner drain pipe. The inner drain pipe can be cleaned and replaced regularly to prevent clogging.
This design achieves repairability of the drainage pipes, reduces maintenance costs, improves drainage efficiency and reliability, and ensures the long-term stability and safety of the retaining wall.
Smart Images
Figure CN224431587U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of geotechnical engineering construction technology, and in particular to a repairable internal filter drainage pipe for slope support structures. Background Technology
[0002] In geotechnical engineering, slope protection structures refer to structures that support roadbed fill or hillside soil and prevent deformation and instability of the fill or soil. Among them, retaining walls are commonly used slope protection structures. To reduce the moisture content of the soil behind the retaining wall and prevent displacement, cracking, tilting, or even collapse of the retaining wall, drainage structures are usually installed in the retaining wall during construction to drain water from the soil.
[0003] In related technologies, drainage structures are commonly drainage pipes, typically single-layered rigid plastic pipes. After passing through the retaining wall, the drainage pipe connects to a filter structure (such as a filter layer or filter bag). Over time, the filter layer or filter bag behind the drainage pipe easily becomes clogged, allowing soil and other impurities to enter and cause blockage, leading to drainage pipe failure. Furthermore, because the filter structure is located outside the drainage pipe and inside the soil behind the retaining wall, blockages are often irreparable, affecting the drainage function of the drainage pipe. Utility Model Content
[0004] This application provides a repairable internal filter drainage pipe for slope support structures, which can periodically repair clogged drainage pipes.
[0005] This application provides a repairable internal filter drainage pipe for slope protection structures, applied to retaining walls, the drainage pipe comprising:
[0006] The external drainage pipe is used to penetrate the retaining wall.
[0007] A drain inner pipe is detachably installed inside the drain outer pipe, and the drain inner pipe is connected to the drain outer pipe; and
[0008] The filter element is installed inside the drain pipe and is used to filter the water flowing through the drain pipe.
[0009] In some embodiments, the inner drain pipe is retractably disposed within the outer drain pipe along the length of the outer drain pipe.
[0010] In some embodiments, the drain pipe further includes:
[0011] A pipe cover is installed at the inlet end of the drain pipe, and the pipe cover is provided with an inlet hole;
[0012] The inlet end of the drain pipe abuts against the pipe cover and is connected to the inlet hole.
[0013] In some embodiments, the drain pipe further includes:
[0014] A filter plug is installed at the outlet end of the outer drain pipe. The filter plug has an outlet hole that communicates with the outlet end of the inner drain pipe. The filter plug is used to block the outlet end of the inner drain pipe.
[0015] In some embodiments, the filter plug includes:
[0016] A sealing element is disposed at the outlet end of the drain pipe, and the sealing element is provided with the outlet hole; and
[0017] The stop valve is detachably installed on both radial sides of the drain pipe and is located on the side of the sealing member near the outlet end of the drain pipe.
[0018] In some embodiments, the outer drain pipe has a first permeable hole penetrating its own sidewall, and the inner drain pipe has a second permeable hole penetrating its own sidewall.
[0019] The first permeable hole is connected to the second permeable hole.
[0020] In some embodiments, the drain pipe further includes:
[0021] A filter assembly, at least partially disposed between the outer drain pipe and the inner drain pipe, is used to filter the water flowing from the first permeable hole to the second permeable hole.
[0022] In some embodiments, the filtering component includes:
[0023] The first filter layer is wrapped around the outside of the inner drain pipe; and
[0024] The second filter layer is disposed outside the first filter layer, and the filtration accuracy of the first filter layer is less than that of the second filter layer.
[0025] In some embodiments, the second filter layer is a wire mesh; and / or,
[0026] The filter assembly includes at least two second filter layers, with at least one second filter layer wrapped around the outside of the drain pipe.
[0027] The inlet end of the drain pipe is higher than the outlet end of the drain pipe.
[0028] This application detachably installs the inner drain pipe inside the outer drain pipe. When cleaning or replacing the inner drain pipe, it can be removed from the outer drain pipe, making operation convenient and facilitating timely cleaning of the drain pipe. This reduces the risk of blockage, effectively ensures the drainage effect, improves the reliability of the drain pipe, achieves a repairable design, and reduces maintenance costs. Furthermore, by installing a filter element inside the inner drain pipe, the water flowing through it can be filtered, further preventing blockage. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of a slope protection structure in one embodiment of this application;
[0031] Figure 2 This is a schematic cross-sectional view of the drain pipe in one embodiment of this application;
[0032] Figure 3 This is a schematic diagram of the structure of the drain pipe in one embodiment of this application;
[0033] Figure 4 This is a schematic diagram of the structure of the drain pipe in one embodiment of this application;
[0034] Figure 5 This is a schematic diagram of a slope support structure in one embodiment of this application.
[0035] Explanation of reference numerals in the attached figures:
[0036] 10. Drain pipe; 100. Outer drain pipe; 110. First permeable hole; 120. Insertion hole; 200. Inner drain pipe; 210. Second permeable hole; 300. Filter element; 400. Pipe cover; 410. Inlet hole; 500. Filter plug; 510. Sealing component; 511. Outlet hole; 520. Stop valve; 600. Filter assembly; 610. First filter layer; 620. Second filter layer; 700. Retaining wall; 710. Mounting hole. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0038] In geotechnical engineering, slope protection structures refer to structures that support roadbed fill or hillside soil and prevent deformation and instability of the fill or soil. These structures are used in infrastructure such as buildings, highways, railways, tunnels, bridges, dams, and reservoirs, as well as industrial and civil buildings. Retaining walls are a common slope protection structure. To reduce the moisture content of the soil behind the retaining wall and prevent displacement, cracking, tilting, or even collapse, drainage structures need to be installed on the retaining wall to drain water from the soil.
[0039] Drainage structures typically employ single-layer rigid plastic pipes that pass through the retaining wall and connect to a filter structure. However, after prolonged use, the filter structure behind the drain pipe is prone to siltation and blockage, allowing impurities such as mud to enter and causing blockage, eventually leading to a loss of drainage function. During rainfall, the inability to promptly drain water behind the retaining wall reduces soil parameters, increases pressure, and ultimately affects the safety and stability of the retaining wall.
[0040] To drain water from the soil behind a retaining wall, this application provides a repairable internally filtered drainage pipe for slope protection structures. In this embodiment, a retaining wall 700 is used as an example of the slope protection structure for illustration.
[0041] Please see Figure 1 The retaining wall 700 is provided with mounting holes 710, which are typically drilled using a drilling rig. During actual construction, the diameter of the mounting hole 710 is 100mm. However, the diameter of the mounting hole 710 can be flexibly adjusted according to actual conditions; it can also be other sizes such as 110mm, 90mm, or 80mm. The mounting hole 710, as a pre-reserved opening on the retaining wall 700, penetrates directly through the retaining wall 700 and extends into the soil on one side of the retaining wall 700, forming the core channel of the drainage system of the retaining wall 700, providing installation positions and space for the drainage pipe 10 and other drainage structures.
[0042] The drainage pipe 10 passes through the mounting hole 710, with one part of the drainage pipe 10 located inside the mounting hole 710 and the other part exposed from one side of the retaining wall 700 and inserted into the soil. Optionally, the length L of the portion of the drainage pipe 10 exposed from one side of the retaining wall 700 along its own length direction AA is greater than or equal to 500mm, for example, L can be 500mm, 1000mm, etc. Through the above arrangement, the drainage pipe 10 can cover a wider area, draining groundwater and seepage water in the soil within the retaining wall 700 as much as possible, preventing the retaining wall 700 from becoming unstable due to excessive soil moisture content; at the same time, it avoids problems such as incomplete drainage and local instability caused by insufficient depth of the drainage pipe 10.
[0043] Please refer to the following: Figure 1In this embodiment of the application, the drain pipe 10 includes an outer drain pipe 100, an inner drain pipe 200, and a filter element 300.
[0044] The drainage pipe 100 is inserted into the mounting hole 710 to pass through the retaining wall 700, specifically through the mounting hole 710. The drainage pipe 100 is a hollow cylinder, usually made of high-strength plastic or metal, allowing groundwater and seepage water in the soil to flow into it. Through this design, on the one hand, the drainage pipe 100 provides support and protection for its internal structure and effectively resists external physical impacts and environmental erosion; on the other hand, the drainage pipe 100 also prevents the mounting hole 710 from deforming or collapsing due to soil compression or water erosion, ensuring the long-term stability of the drainage channel.
[0045] The inner drain pipe 200 is detachably installed inside the outer drain pipe 100 and is connected to the outer drain pipe 100, allowing water flowing into the outer drain pipe 100 to enter the inner drain pipe 200. The inner drain pipe 200 is a hollow cylinder, typically made of plastic. Using this material improves the lightweight nature of the inner drain pipe 200 and facilitates disassembly. The detachable design of the inner drain pipe 200 and the outer drain pipe 100 facilitates regular cleaning and replacement, preventing blockages in the inner drain pipe 200 and reducing maintenance difficulty and costs.
[0046] The filter element 300 is installed inside the inner drain pipe 200 to filter the water flowing through it, thereby improving the reliability of the drain pipe 10. The filter element 300 is typically made of stone chips, gravel, etc., materials with good durability and corrosion resistance, which can extend the service life of the filter element 300 and reduce production costs. Understandably, in this embodiment, the internal filtration drain pipe 10 refers to the filter element 300 being installed inside the inner drain pipe 200, thus giving the drain pipe 10 an internal filtration effect.
[0047] This application detachably installs the inner drain pipe 200 inside the outer drain pipe 100. When cleaning or replacing the inner drain pipe 200, it can be removed from the outer drain pipe 100, making operation convenient and facilitating timely cleaning of the drain pipe 10. This reduces the risk of blockage, effectively ensures the drainage effect of the drain pipe 10, improves its reliability, achieves a repairable design, and reduces maintenance costs. Furthermore, by installing a filter element 300 inside the inner drain pipe 200, the water flowing through it can be filtered, further preventing blockage of the drain pipe 10.
[0048] In addition, the drainage pipe 10 of this application can also repair the existing retaining wall 700. The drainage pipe in the existing retaining wall 700 is typically a single-layer rigid plastic pipe, which connects to a filter structure after passing through the retaining wall 700. The filter structure is located in the soil behind the retaining wall 700 and can be a filter layer or filter bag. After long-term use, the filter structure is prone to siltation and blockage, allowing impurities such as mud to enter the rigid plastic pipe, leading to blockage and failure of the drainage pipe. When repairing the drainage structure of the existing retaining wall 700, the original single-layer rigid plastic pipe and filter structure are removed, and the internal filter drainage pipe 10 of this application is inserted into the retaining wall 700 through the original installation location. Furthermore, since the inner drainage pipe 200 is detachably installed on the outer drainage pipe 100, the inner drainage pipe 200 can be periodically disassembled, cleaned, and replaced, thereby enabling periodic repair of the drainage pipe 10 and completing the repair work on the existing retaining wall 700.
[0049] In some implementations, see Figure 1 The drainage pipe 10 is applied to the retaining wall 700. The drainage pipe 10 includes an outer drainage pipe 100, an inner drainage pipe 200, and a filter element 300. The outer drainage pipe 100 is used to penetrate the retaining wall 700; the inner drainage pipe 200 is detachably installed inside the outer drainage pipe 100 and is connected to the outer drainage pipe 100; the filter element 300 is installed inside the inner drainage pipe 200 and is used to filter the water flowing through the inner drainage pipe 200.
[0050] In actual construction, the outer drainage pipe 100 can be made of galvanized steel pipe, and the outer diameter of the outer drainage pipe 100 is 100mm. It is understood that the material and size of the outer drainage pipe 100 are not fixed in this application; the outer drainage pipe 100 can also be made of stainless steel pipe, fiberglass pipe, etc.; the diameter of the outer drainage pipe 100 can also be other sizes such as 110mm, 90mm, and 80mm. Using the above materials, on the one hand, galvanized steel pipe has high corrosion resistance and stability, enabling the outer drainage pipe 100 to provide support and protection for its internal structure, and effectively resist external physical impacts and environmental erosion; on the other hand, galvanized steel pipe has high structural strength, which can prevent the installation hole 710 from deforming or collapsing due to soil compression or water erosion, ensuring the long-term stability of the drainage channel.
[0051] Furthermore, during actual construction, the inner drain pipe 200 can be made of PVC (polyvinyl chloride) plastic pipe, and its outer diameter is 90mm. For ease of installation, the inner pipe diameter is generally 10mm smaller than the outer pipe diameter. Understandably, the material and dimensions of the inner drain pipe 200 are not fixed in this application; it can also be made of HDPE (high-density polyethylene) pipe, PP (polypropylene) pipe, etc.; and its diameter can be 100mm, 80mm, 70mm, or other sizes. Using these materials makes the inner drain pipe 200 highly portable, easy to disassemble, and convenient for cleaning and replacement, preventing blockage of the drain pipe 10 and reducing maintenance difficulty and costs.
[0052] Furthermore, during actual construction, the filter element 300 can be made from materials such as stone chips and gravel. Understandably, this application does not specify a fixed material for the filter element 300; it can also be made from materials such as crushed ceramic pieces. Using these materials provides good durability and corrosion resistance, extending the service life of the filter element 300; and also reduces production costs.
[0053] In some embodiments, the inner drain pipe 200 is removably installed inside the outer drain pipe 100 along the length direction AA of the outer drain pipe 100. This removable structure is simple, easy to disassemble, and facilitates regular cleaning and replacement of the inner drain pipe 200, preventing blockages and reducing maintenance difficulty and costs.
[0054] In some implementations, such as Figure 3 As shown, the drainage pipe 100 has a first permeable hole 110 penetrating its side wall, allowing groundwater and seepage water in the soil to flow into the drainage pipe 100 through the first permeable hole 110. Specifically, there are multiple first permeable holes 110, arranged in an array matrix. This arrangement enables efficient drainage, avoids localized water accumulation, and improves drainage balance. Furthermore, the uniformly arranged first permeable holes 110 also maintain the rigidity of the drainage pipe 100 and prevent stress concentration, effectively improving the reliability of the drainage pipe 100 and extending its service life.
[0055] It should be noted that this application does not limit the size and arrangement of the first permeable holes 110. Those skilled in the art can flexibly adjust the size and arrangement of the first permeable holes 110 according to actual needs. For example, the diameter of the first permeable holes 110 can be 3mm, 4mm, 5mm, 6mm, 7mm, etc. Furthermore, multiple first permeable holes 110 can be arranged in a dot matrix or in a quincunx pattern.
[0056] In a further implementation, such as Figure 4 As shown, the inner drain pipe 200 has a second permeable hole 210 penetrating its own side wall, and the second permeable hole 210 is connected to the first permeable hole 110. Water flowing through the outer drain pipe 100 can flow into the inner drain pipe 200 through the second permeable hole 210. Specifically, there are multiple second permeable holes 210, and the multiple second permeable holes 210 are arranged in an array matrix. Through the above arrangement, efficient drainage can be achieved, local water accumulation can be avoided, and drainage balance can be improved. In addition, the uniformly arranged second permeable holes 210 also have the advantages of maintaining the rigidity of the outer drain pipe 100 and avoiding stress concentration, which effectively improves the reliability of the outer drain pipe 100 and extends the service life of the outer drain pipe 100.
[0057] It should be noted that this application does not limit the size and arrangement of the second permeable holes 210. Those skilled in the art can flexibly adjust the size and arrangement of the second permeable holes 210 according to actual needs. For example, the diameter of the second permeable holes 210 can be 3mm, 4mm, 5mm, 6mm, 7mm, etc. Furthermore, multiple second permeable holes 210 can also be arranged in a dot matrix pattern, or in a quincunx pattern.
[0058] In some implementations, refer to Figure 2 The drainage pipe 10 also includes a filter assembly 600, which includes a first filter layer 610 and a second filter layer 620. The first filter layer 610 is disposed around the outside of the inner drainage pipe 200, and the second filter layer 620 is disposed around the outside of the first filter layer 610. Specifically, both the first filter layer 610 and the second filter layer 620 are located between the outer drainage pipe 100 and the inner drainage pipe 200, and are used to filter the water flowing from the first permeable hole 110 to the second permeable hole 210. The first filter layer 610 and the second filter layer 620 can fill the gap between the inner drainage pipe 200 and the outer drainage pipe 100, preventing soil loss. Furthermore, by setting the filter assembly 600 as a double-layer structure, it can filter the water flowing from the first permeable hole 110 to the second permeable hole 210 layer by layer, effectively preventing most particles such as mud and sand from entering the inner drainage pipe 200 and avoiding blockage of the drainage pipe 10.
[0059] In a further embodiment, the filtration accuracy of the first filter layer 610 is less than that of the second filter layer 620, which further prevents particles such as mud and sand from entering the inner drain pipe 200, avoids blockage of the drain pipe 10, and maintains the long-term stability of the drain pipe 10.
[0060] Optionally, the first filter layer 610 is a geotextile, which allows water to flow through while effectively intercepting fine particles such as silt; the geotextile can also completely conform to the side wall of the drainage inner pipe 200, effectively preventing filtration failure due to deformation. Understandably, this application does not limit the material of the first filter layer 610, and the first filter layer 610 can also be fiberglass cloth, non-woven fabric, etc.
[0061] Furthermore, the second filter layer 620 is made of wire mesh. The wire mesh can filter larger particles in the water flow, preventing the first filter layer 610 from being scratched by stones or other particles in the soil. The wire mesh also provides support, protecting the inner drain pipe 200 and increasing its strength. Understandably, this application does not limit the material of the second filter layer 620; it can also be made of brass wire mesh, etc.
[0062] In some implementations, such as Figure 2 As shown, the second filter layer 620 is also wrapped around the outside of the drain pipe 100. On the one hand, the second filter layer 620 can provide support and further enhance the strength of the drain pipe 100; on the other hand, the second filter layer 620 can also fill the gap between the drain pipe 100 and the mounting hole 710 to prevent soil loss.
[0063] In some implementations, see Figure 3 The drainage pipe 10 also includes a pipe cover 400, which is located at the inlet end of the outer drainage pipe 100 and connected to it. The pipe cover 400 has an inlet hole 410. The inlet end of the inner drainage pipe 200 abuts against the pipe cover 400, and the inlet end of the inner drainage pipe 200 communicates with the inlet hole 410, allowing groundwater and seepage water in the soil to flow into the inner drainage pipe 200 through the inlet hole 410, providing multiple paths for water flow and improving drainage balance.
[0064] Specifically, the pipe cover 400 is typically made of high-strength plastic or metal materials, such as stainless steel or fiberglass. Using these materials enhances the overall strength of the drain pipe 10. There are multiple water inlets 410, arranged in an array matrix. This arrangement enables efficient drainage and prevents localized water accumulation.
[0065] It should be noted that this application does not limit the size and arrangement of the water inlet holes 410. Those skilled in the art can flexibly adjust the size and arrangement of the water inlet holes 410 according to actual needs. For example, the diameter of the water inlet holes 410 can be 3mm, 4mm, 5mm, 6mm, 7mm, etc. Furthermore, multiple water inlet holes 410 can be arranged in a dot matrix or in a quincunx pattern.
[0066] Furthermore, this application does not limit the connection method between the pipe cover 400 and the drain pipe 100. The pipe cover 400 and the drain pipe 100 can be connected by welding, including but not limited to electric welding and laser welding. Alternatively, the pipe cover 400 and the drain pipe 100 can be connected by adhesive bonding, including but not limited to glue bonding. Alternatively, the pipe cover 400 and the drain pipe 100 can also adopt a one-piece molded structure, including but not limited to one-piece injection molding and one-piece die casting.
[0067] In some implementations, see Figure 1 and Figure 5 The drain pipe 10 also includes a filter plug 500, which includes a sealing element 510. The sealing element 510 is located at the outlet end of the drain outer pipe 100 and is detachably connected to the drain outer pipe 100. The sealing element 510 is used to seal the outlet end of the drain outer pipe 100, preventing the drain inner pipe 200 from coming out of the drain outer pipe 100 and also preventing the filter element 300 in the drain inner pipe 200 from coming out. The sealing element 510 has an outlet hole 511, which is connected to the outlet end of the drain inner pipe 200, allowing water flowing into the drain inner pipe 200 to be discharged through the outlet hole 511.
[0068] Furthermore, the sealing element 510 has a baffle-type structure and is typically made of high-strength plastic or metal materials, such as stainless steel or fiberglass. Using these materials enhances the overall strength of the drain pipe 10. There are multiple outlet holes 511, arranged in an array matrix. This configuration enables efficient drainage, prevents water accumulation in the drain pipe 10, and improves drainage efficiency.
[0069] It should be noted that this application does not limit the size and arrangement of the water outlet holes 511. Those skilled in the art can flexibly adjust the size and arrangement of the water outlet holes 511 according to actual needs. For example, the diameter of the water outlet holes 511 can be 3mm, 4mm, 5mm, 6mm, 7mm, etc. Furthermore, multiple water outlet holes 511 can be arranged in a dot matrix or in a quincunx pattern.
[0070] In some implementations, such as Figure 5 As shown, the filter plug 500 also includes a stop valve 520, which is located on the side of the sealing member 510 near the outlet end of the drain pipe 100. Specifically, the stop valve 520 is located on both radial sides of the outlet end of the drain pipe 100 (e.g., Figure 5An insertion hole 120 is provided on the side wall of the drain pipe 200 (both sides). The stop valve 520 passes through the insertion hole 120 and is detachably installed in the insertion hole 120. In this way, on the one hand, the sealing member 510 can be removed by removing the stop valve 520, thereby realizing the disassembly of the drain pipe 200; on the other hand, the stop valve 520 can prevent the sealing member 510 from falling off.
[0071] In an alternative embodiment, the plugging component 510 is a threaded plug structure. The outer periphery of the plugging component 510 has external threads, and the inner wall of the drain pipe 100 at the outlet end has internal threads that mate with the external threads. The plugging component 510 is threadedly connected to the outlet end of the drain pipe 100. In this embodiment, the stop valve 520 can be omitted; the outlet end of the drain pipe 200 can be sealed simply by the threaded connection between the plugging component 510 and the drain pipe 100, thus preventing the drain pipe 200 and the filter element 300 from dislodging.
[0072] In some implementations, see Figure 1 The inlet end of the drain pipe 10 is higher than the outlet end of the drain pipe 10. This design improves the drainage efficiency of the drain pipe 10, prevents water accumulation, and reduces the risk of blockage.
[0073] The following reference Figures 1-5 An exemplary drainage path for the slope support structure of this application is described.
[0074] First, groundwater and seepage water in the soil are filtered through the second filter layer 620 and flow into the outer drainage pipe 100 through the first permeable hole 110. Then, the water passing through the first permeable hole 110 undergoes double filtration through the second filter layer 620 and the first filter layer 610, and the filtered water enters the inner drainage pipe 200 through the second permeable hole 210. Finally, the water flowing through the inner drainage pipe 200 is filtered by the filter element 300 and discharged through the outlet hole 511, completing the drainage process.
[0075] Reference Figure 1 This application describes one possible construction method for the slope support structure.
[0076] First, the drilling of the installation hole 710. Specifically, the installation hole 710 can be drilled using a drilling rig. Before drilling the installation hole 710, the location of the installation hole 710 needs to be planned in advance to prevent problems such as displacement, cracking, tilting or even collapse of the retaining wall 700 due to drilling.
[0077] Second, the fabrication of the pipe cover 400. A water inlet hole 410 is made on the pipe cover 400.
[0078] Third, the assembly of the drain pipe 100. First, a first water-permeable hole 110 is opened on the pipe wall of the drain pipe 100; second, the second filter element is wrapped around the outer periphery of the drain pipe 100; then, the pipe cap 400 is placed at the water inlet end of the drain pipe 100; finally, the assembled drain pipe 100 is inserted into the mounting hole 710.
[0079] Fourth, the assembly of the inner drain pipe 200. First, a second permeable hole 210 is opened on the pipe wall of the inner drain pipe 200; second, the first filter element is wrapped around the outer periphery of the inner drain pipe 200; then, the second filter element is wrapped around the outer periphery of the first filter element; after that, the filter element 300 is filled into the inner drain pipe 200; finally, the assembled inner drain pipe 200 is inserted into the outer drain pipe 100 until the water inlet end of the inner drain pipe 200 abuts against the pipe cover 400.
[0080] Fifth, the assembly of the filter plug 500. First, a water outlet hole 511 is provided on the plug 510; second, the plug 510 is placed at the water outlet end of the drain pipe 100; then, an insertion hole 120 is opened on the side wall of the drain pipe 100 near the water outlet end of the plug 510; finally, the stop valve 520 is inserted into the insertion hole 120 to complete the sealing.
[0081] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0083] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0084] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0085] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A repairable internal drainage pipe for a slope support structure, characterized by, The drainage pipe, used in retaining walls, includes: The external drainage pipe is used to penetrate the retaining wall. A drain inner pipe is detachably installed inside the drain outer pipe, and the drain inner pipe is connected to the drain outer pipe; and The filter element is installed inside the drain pipe and is used to filter the water flowing through the drain pipe.
2. The sewer according to claim 1, characterized in that The inner drain pipe is retractably installed inside the outer drain pipe along the length of the outer drain pipe.
3. The sewer according to claim 2, characterized in that The drain pipe also includes: A pipe cover is installed at the inlet end of the drain pipe, and the pipe cover is provided with an inlet hole; The inlet end of the drain pipe abuts against the pipe cover and is connected to the inlet hole.
4. The drain pipe according to claim 2, characterized in that, The drain pipe also includes: A filter plug is installed at the outlet end of the outer drain pipe. The filter plug has an outlet hole that communicates with the outlet end of the inner drain pipe. The filter plug is used to block the outlet end of the inner drain pipe.
5. The drain pipe according to claim 4, characterized in that, The filter plug includes: A sealing element is disposed at the outlet end of the drain pipe, and the sealing element is provided with the outlet hole; and The stop valve is detachably installed on both radial sides of the drain pipe and is located on the side of the sealing member near the outlet end of the drain pipe.
6. The drain pipe according to any one of claims 1-5, characterized in that, The outer drain pipe has a first permeable hole that penetrates its own side wall, and the inner drain pipe has a second permeable hole that penetrates its own side wall. The first permeable hole is connected to the second permeable hole.
7. The drain pipe according to claim 6, characterized in that, The drain pipe also includes: A filter assembly, at least partially disposed between the outer drain pipe and the inner drain pipe, is used to filter the water flowing from the first permeable hole to the second permeable hole.
8. The drain pipe according to claim 7, characterized in that, The filtering component includes: The first filter layer is wrapped around the outside of the inner drain pipe; and The second filter layer is disposed outside the first filter layer, and the filtration accuracy of the first filter layer is less than that of the second filter layer.
9. The drain pipe according to claim 8, characterized in that, The second filter layer is a wire mesh; and / or, The filter assembly includes at least two second filter layers, with at least one second filter layer wrapped around the outside of the drain pipe.
10. The drain pipe according to any one of claims 1-5, characterized in that, The inlet end of the drain pipe is higher than the outlet end of the drain pipe.