Retaining wall integrated type double-layer water filtering layer water drainage pipe
By designing an integrated double-layer filter drainage pipe for retaining walls and employing a filtration and fixing mechanism on the inside of the cable ties, the problems of easy clogging and unstable connection in traditional drainage systems are solved, achieving efficient and stable drainage performance and convenient maintenance, thus extending the service life of the retaining walls.
Patent Information
- Application Number
- CN202511107942.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2025-11-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional retaining wall drainage systems are prone to clogging, have unstable connections, high maintenance costs, and are difficult to clean or replace, affecting the stability and service life of the retaining wall.
The retaining wall is designed with an integrated double-layer filter layer drainage pipe, which adopts a filtration mechanism and a fixing mechanism on the inside of the cable tie, including the first and second fixing mechanisms. The double-layer filter structure composed of non-woven geotextile and PVC pipe achieves secondary filtration and stable connection. The inner perforated pipe is detachable for easy cleaning.
It improves drainage efficiency, reduces the risk of blockage, enhances connection stability, reduces maintenance difficulty and cost, and extends the service life of the retaining wall.
Smart Images
Figure CN121006781A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of retaining wall drainage technology, specifically to an integrated double-layer filter drainage pipe for retaining walls. Background Technology
[0002] In retaining wall engineering, an effective drainage system is crucial for ensuring the stability and service life of the wall structure. Traditional retaining wall drainage often uses a single pipe or a simple filter structure, which has several problems:
[0003] Traditional drainage pipes rely on single-layer filter materials, which are difficult to effectively intercept fine particulate impurities in the soil. Long-term use can easily lead to blockage of pipe gaps, reduce drainage efficiency, and even cause safety hazards such as water accumulation behind walls and increased soil pressure.
[0004] Existing drainage structures are mostly fixed integrated designs. When the pipes become blocked or the filtration function fails, it is difficult to disassemble, clean or replace the internal components. This often requires large-scale excavation and repair, which is not only costly but also affects the normal use of the retaining wall.
[0005] Some drainage pipes are simply connected to retaining walls, and under the influence of external forces such as water flow impact and soil pressure changes, they are prone to loosening and displacement, causing the drainage path to deviate and further aggravating the problem of poor drainage.
[0006] To address the aforementioned issues, it is imperative to design an integrated double-layer filter drainage pipe for retaining walls. This design aims to improve the drainage performance and durability of retaining walls, meeting the engineering practice's demand for efficient and reliable drainage systems. Summary of the Invention
[0007] The purpose of this invention is to provide an integrated double-layer filter drainage pipe for retaining walls to solve the problems mentioned in the background art.
[0008] To achieve the above objectives, the present invention provides the following technical solution: an integrated double-layer filter layer drainage pipe for retaining walls, including cable ties, a filter mechanism is provided inside the cable ties, a first fixing mechanism is provided on the outer periphery of the left end of the filter mechanism, and a second fixing mechanism is provided on the outer periphery of the right end of the filter mechanism;
[0009] The filtration mechanism includes a first non-woven geotextile, which is disposed inside the tie. An outer perforated tube is wound around the inner side of the first non-woven geotextile. An inner perforated tube is slidably connected to the inner side of the outer perforated tube. A filter bag is slidably connected to the left side of the inner perforated tube. A second non-woven geotextile is wound around the outer side of the filter bag. A sealing plug is threaded to the left end of the filter bag. A filter frame is slidably connected inside the inner perforated tube. A first fixed shaft is threaded to the inside of the filter frame.
[0010] Preferably, the first nonwoven geotextile has two layers, both of which are wrapped around the outer perimeter of the outer perforated pipe, so that the water entering the outer perforated pipe can be filtered through the first nonwoven geotextile.
[0011] Preferably, the second nonwoven geotextile has two layers, both of which are wrapped around the outside of the filter bag. The filter bag has a slot on the right side, and the left end of the inner perforated tube is located outside the slot, so that the filter bag and the inner perforated tube can be connected when passing through the slot.
[0012] Preferably, the filter bag is filled with coarse sand, pebbles, and gravel. The filter bag, outer perforated pipe, and inner perforated pipe are all made of PVC pipe, and the diameter of the inner perforated pipe is smaller than that of the outer perforated pipe, so as to facilitate the filtration of water entering the filter bag through the coarse sand, pebbles, and gravel.
[0013] Preferably, the left side of the filter frame is in contact with the left side of the inner flower tube, and the first fixing shaft passes through the inside of the inner flower tube, so as to ensure the stability of the filter frame through the first fixing shaft.
[0014] Preferably, the first fixing mechanism includes a first limiting frame, which is slidably connected to the periphery of the second nonwoven geotextile. A second limiting frame is provided at the bottom of the first limiting frame, and the second limiting frame is slidably connected to the periphery of the second nonwoven geotextile. A sealing sleeve is slidably connected to the front periphery of the first limiting frame and the second limiting frame, and a second fixing shaft is threadedly connected inside the sealing sleeve.
[0015] Preferably, the second fixed shaft passes through the interior of the first limiting frame and the second limiting frame. The sealing sleeve and the second fixed shaft are provided in four sets and are symmetrically distributed on the front and rear sides of the first limiting frame and the second limiting frame, so as to ensure the stability of the second non-woven geotextile through the first limiting frame and the second limiting frame.
[0016] Preferably, the second fixing mechanism includes a connecting block, which is fixedly connected to the right side of the outer flower tube. A fixing frame is inserted inside the connecting block, and the fixing frame is slidably connected to the outer periphery of the right end of the inner flower tube. A limit shaft is threadedly connected inside the fixing frame.
[0017] Preferably, the limiting shaft passes through the inside of the connecting block, and the connecting block, the limiting shaft and the fixing frame are provided in two sets and are symmetrically distributed on the upper and lower sides of the inner flower tube, so that the fixing frame can be stabilized by the limiting shaft, thereby limiting the inner flower tube.
[0018] Compared with the prior art, the present invention provides an integrated double-layer filter drainage pipe for retaining walls, which has the following beneficial effects:
[0019] 1. This integrated double-layer filter drainage pipe for retaining walls, through its filtration mechanism, allows for drainage of the retaining wall. First, medium-coarse sand, pebbles, and crushed stone are sequentially filled into the filter bag at a ratio of 1 / 3. After filling, the left side of the filter bag is sealed with a sealing plug. Simultaneously, a second non-woven geotextile is wrapped around the outside of the filter bag. The finished filter bag is then slowly inserted into the borehole, with the right side (with the snap-fit end) facing outwards. The outer perforated pipe is then wrapped with the first non-woven geotextile and secured with cable ties. An external wooden plug is used to seal the inside of the outer perforated pipe. The wrapped outer perforated pipe is then inserted into the borehole. After the outer side is firmly fixed to the retaining wall reinforcement, the retaining wall construction can proceed. Once the retaining wall construction is complete, the wooden plug can be removed, and the slightly smaller diameter inner perforated pipe can be inserted into the outer perforated pipe. The left side is slidably connected to the right side of the filter bag, while the left end of the inner perforated pipe is located outside the right side bayonet of the filter bag, thus connecting the filter bag and the inner perforated pipe. The outer and outer perforated pipes are fixed by a second fixing mechanism. The double-layer filter pipe design serves as a secondary filter and protects the inner perforated pipe, reducing the clogging of the drainage gaps in the inner perforated pipe. During the later maintenance of the retaining wall, the inner perforated pipe and filter bag can be removed for cleaning and then reinserted to increase the overall drainage performance of the retaining wall.
[0020] 2. The integrated double-layer filter layer drainage pipe of the retaining wall, through the first fixing mechanism, when the second non-woven geotextile is wrapped around the outside of the filter bag, the first limiting frame and the second limiting frame cooperate with each other to firmly clamp the second non-woven geotextile from the outside. With the cooperation of four sets of symmetrically distributed sealing sleeves and the second fixing shaft, the stability between the first limiting frame and the second limiting frame can be guaranteed, and loosening caused by water flow impact or soil pressure can be prevented.
[0021] 3. The integrated double-layer filter drainage pipe of this retaining wall, through the setting of a second fixing mechanism, when the inner pipe is inside the outer pipe, achieves a firm lock on the right end of the inner pipe through the combination of connecting block, fixing frame and limiting shaft. The two sets of symmetrically distributed structural designs enhance the overall stress balance, keep the inner pipe stable inside the outer pipe, and reduce the risk of drainage failure caused by structural displacement. At the same time, the sliding connection structure between the outer pipe and the inner pipe not only ensures the relative position stability of the two, but also allows the inner pipe to be easily removed for cleaning. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:
[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0024] Figure 2 This is a schematic diagram of the rear view structure of the present invention;
[0025] Figure 3 This is a schematic diagram of the filter mechanism.
[0026] Figure 4 This is a schematic diagram of the internal structure of the first nonwoven geotextile.
[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the inner flower tube;
[0028] Figure 6 This is a schematic diagram of the first fixed mechanism.
[0029] Figure 7 This is a schematic diagram of the second fixed mechanism.
[0030] In the diagram: 1. Cable tie; 2. Filtering mechanism; 3. First fixing mechanism; 4. Second fixing mechanism; 21. First non-woven geotextile; 22. Outer perforated tube; 23. Inner perforated tube; 24. Second non-woven geotextile; 25. Sealing plug; 26. Filter bag; 27. Filter frame; 28. First fixing shaft; 31. First limiting frame; 32. Second fixing shaft; 33. Sealing sleeve; 34. Second limiting frame; 41. Connecting block; 42. Limiting shaft; 43. Fixing frame. Detailed Implementation
[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0033] Example 1
[0034] Please see Figure 1-7The present invention provides a technical solution: an integrated double-layer filter layer drainage pipe for retaining walls, including a cable tie 1, a filter mechanism 2 is provided inside the cable tie 1, a first fixing mechanism 3 is provided on the outer periphery of the left end of the filter mechanism 2, and a second fixing mechanism 4 is provided on the outer periphery of the right end of the filter mechanism 2.
[0035] The filtration mechanism 2 includes a first nonwoven geotextile 21, which is disposed inside the cable tie 1. An outer perforated tube 22 is wound around the inner side of the first nonwoven geotextile 21. An inner perforated tube 23 is slidably connected to the inner side of the outer perforated tube 22. A filter bag 26 is slidably connected to the left side of the inner perforated tube 23. A second nonwoven geotextile 24 is wound around the outer side of the filter bag 26. A sealing plug 25 is threadedly connected to the left end of the filter bag 26. A filter frame 27 is slidably connected inside the inner perforated tube 23. A first fixed shaft 28 is threadedly connected inside the filter frame 27.
[0036] The first nonwoven geotextile 21 has two layers, both of which are wrapped around the outer perimeter of the outer perforated pipe 22, so that the water entering the outer perforated pipe 22 can be filtered through the first nonwoven geotextile 21.
[0037] The second nonwoven geotextile 24 has two layers, both of which are wrapped around the outside of the filter bag 26. The filter bag 26 has a slot on the right side, and the left end of the inner perforated tube 23 is located outside the slot, so that the filter bag 26 and the inner perforated tube 23 can be connected when passing through the slot.
[0038] The filter bag 26 is filled with coarse sand, pebbles, and gravel. The filter bag 26, the outer perforated pipe 22, and the inner perforated pipe 23 are all made of PVC pipes. The diameter of the inner perforated pipe 23 is smaller than that of the outer perforated pipe 22, which facilitates the filtration of water entering the filter bag 26 through the coarse sand, pebbles, and gravel.
[0039] The left side of the filter frame 27 is in contact with the left side of the inner tube 23, and the first fixed shaft 28 passes through the inside of the inner tube 23, so as to ensure the stability of the filter frame 27 through the first fixed shaft 28.
[0040] Example 2
[0041] Please see Figure 1-7 Furthermore, based on Embodiment 1, the first fixing mechanism 3 further includes a first limiting frame 31, which is slidably connected to the periphery of the second nonwoven geotextile 24. A second limiting frame 34 is provided at the bottom of the first limiting frame 31, which is slidably connected to the periphery of the second nonwoven geotextile 24. A sealing sleeve 33 is slidably connected to the front periphery of the first limiting frame 31 and the second limiting frame 34. A second fixing shaft 32 is threadedly connected inside the sealing sleeve 33.
[0042] The second fixed shaft 32 passes through the interior of the first limiting frame 31 and the second limiting frame 34. The sealing sleeve 33 and the second fixed shaft 32 are provided in four sets and are symmetrically distributed on the front and rear sides of the first limiting frame 31 and the second limiting frame 34, so as to ensure the stability of the second non-woven geotextile 24 through the first limiting frame 31 and the second limiting frame 34.
[0043] Example 3
[0044] Please see Figure 1-7 Furthermore, based on Examples 1 and 2, the second fixing mechanism 4 is further obtained, which includes a connecting block 41. The connecting block 41 is fixedly connected to the right side of the outer flower tube 22. A fixing frame 43 is inserted inside the connecting block 41. The fixing frame 43 is slidably connected to the outer periphery of the right end of the inner flower tube 23. A limit shaft 42 is threadedly connected inside the fixing frame 43.
[0045] The limiting shaft 42 passes through the inside of the connecting block 41. There are two sets of connecting blocks 41, limiting shaft 42 and fixing frame 43, which are symmetrically distributed on the upper and lower sides of the inner flower tube 23. This makes it easy to ensure the stability of the fixing frame 43 through the limiting shaft 42, thereby limiting the inner flower tube 23.
[0046] In actual operation, when this device is used to drain water from the retaining wall, firstly, corresponding holes are drilled inside the retaining wall. Medium-coarse sand, pebbles, and crushed stone are then filled into the filter bag 26 in a 1 / 3 ratio. After filling, the left side of the filter bag 26 is sealed with the sealing plug 25. Simultaneously, the second non-woven geotextile 24 is wrapped around the filter bag 26. When the second non-woven geotextile 24 is wrapped around the filter bag 26, the first limiting frame 31 and the second limiting frame 34 are slidably connected. Around the second nonwoven geotextile 24, the second first limiting frame 31 and the second limiting frame 34 cooperate with each other to firmly clamp the second nonwoven geotextile 24 from the outside. Then, the sealing sleeve 33 is slidably connected to the front periphery of the first limiting frame 31 and the second limiting frame 34 and fixed by the second fixing shaft 32. The four sets of symmetrically distributed sealing sleeves 33 and second fixing shafts 32 can ensure the stability between the first limiting frame 31 and the second limiting frame 34 and prevent loosening caused by water flow impact or soil pressure.
[0047] Then, the finished filter bag 26 is slowly placed into the borehole, with the right side of the filter bag 26 with the snap facing outward. At the same time, the outer tube 22 is wrapped with the first non-woven geotextile 21 and fixed with cable ties 1. The inner side of the outer tube 22 is sealed with an external wooden plug. The wrapped outer tube 22 is then sent into the hole, and the outer side of the outer tube 22 is firmly fixed to the retaining wall reinforcement. The retaining wall construction is then carried out. After the retaining wall construction is completed, the wooden plug can be removed, and the filter frame 27 is slidably connected to the inside of the inner tube 23, with the left side of the filter frame 27 contacting the left side of the inner tube 23. It is then fixed with the first fixing shaft 28 to ensure the stability of the filter frame 27.
[0048] The inner perforated pipe 23, with a slightly smaller diameter, is inserted into the outer perforated pipe 22, and its left side is slidably connected to the right side of the filter bag 26. At the same time, the left end of the inner perforated pipe 23 is located outside the right side bayonet of the filter bag 26, thus connecting the filter bag 26 and the inner perforated pipe 23. Meanwhile, the fixing bracket 43 is slidably connected to the outer side of the right end of the inner perforated pipe 23, and its left side is slidably connected to the inside of the connecting block 41. The connecting block 41 and the fixing bracket 43 are fixed by the limiting shaft 42. Through the combination of the connecting block 41, the fixing bracket 43 and the limiting shaft 42, the right end of the inner perforated pipe 23 is firmly locked. The two sets of symmetrically distributed structural designs enhance the overall force balance, keeping the inner perforated pipe 23 stable inside the outer perforated pipe 22 and reducing the risk of drainage failure caused by structural displacement. At the same time, the sliding connection structure between the outer perforated pipe 22 and the inner perforated pipe 23 not only ensures the stability of their relative positions, but also allows the inner perforated pipe 23 to be easily removed for cleaning.
[0049] During drainage, the filter bag 26 is made of PVC perforated pipe filled with medium and coarse sand, pebbles, and gravel, and wrapped with a second non-woven geotextile 24. The accumulated water will first pass through the second non-woven geotextile 24 for primary filtration, and then enter the filter bag 26 through the holes inside the filter bag 26. After secondary filtration by the sand and gravel materials and geotextile, large particles of impurities are removed. The water flows to one end of the filter bag 26 with a pre-reserved slot and enters the inner perforated pipe 23. It is then discharged under the action of the outer perforated pipe 22 and the inner perforated pipe 23. During the later maintenance of the retaining wall, the inner perforated pipe 23, filter frame 27 and filter bag 26 can be removed for cleaning and then put back in to increase the overall drainage performance of the retaining wall.
[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover 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. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. An integrated double-layer filter drainage pipe for retaining walls, including cable ties (1), characterized in that: A filter mechanism (2) is provided inside the cable tie (1), a first fixing mechanism (3) is provided on the outer periphery of the left end of the filter mechanism (2), and a second fixing mechanism (4) is provided on the outer periphery of the right end of the filter mechanism (2). The filtration mechanism (2) includes a first non-woven geotextile (21), which is located inside the tie (1). An outer flower tube (22) is wound around the inner side of the first non-woven geotextile (21). An inner flower tube (23) is slidably connected to the inner side of the outer flower tube (22). A filter bag (26) is slidably connected to the left side of the inner flower tube (23). A second non-woven geotextile (24) is wound around the outer side of the filter bag (26). A sealing plug (25) is threaded to the left end of the filter bag (26). A filter frame (27) is slidably connected inside the inner flower tube (23). A first fixed shaft (28) is threaded inside the filter frame (27).
2. The integrated double-layer filter layer drainage pipe for retaining walls according to claim 1, characterized in that: The first nonwoven geotextile (21) has two layers, both of which are wrapped around the outer flower tube (22).
3. The integrated double-layer filter drainage pipe for retaining walls according to claim 1, characterized in that: The second nonwoven geotextile (24) has two layers, both of which are wrapped around the outside of the filter bag (26). The filter bag (26) has a slot on the right side, and the left end of the inner flower tube (23) is located outside the slot.
4. The integrated double-layer filter layer drainage pipe for retaining walls according to claim 1, characterized in that: The filter bag (26) is filled with coarse sand, pebbles and gravel. The filter bag (26), the outer flower pipe (22) and the inner flower pipe (23) are all made of PVC pipe, and the diameter of the inner flower pipe (23) is smaller than that of the outer flower pipe (22).
5. The integrated double-layer filter drainage pipe for retaining walls according to claim 1, characterized in that: The left side of the filter frame (27) is in contact with the left side of the inner flower tube (23), and the first fixed shaft (28) passes through the inside of the inner flower tube (23).
6. The integrated double-layer filter drainage pipe for retaining walls according to claim 1, characterized in that: The first fixing mechanism (3) includes a first limiting frame (31), which is slidably connected to the periphery of the second nonwoven geotextile (24). A second limiting frame (34) is provided at the bottom of the first limiting frame (31), which is slidably connected to the periphery of the second nonwoven geotextile (24). A sealing sleeve (33) is slidably connected to the front periphery of the first limiting frame (31) and the second limiting frame (34). A second fixing shaft (32) is threadedly connected inside the sealing sleeve (33).
7. The integrated double-layer filter layer drainage pipe for retaining walls according to claim 6, characterized in that: The second fixed shaft (32) passes through the inside of the first limiting frame (31) and the second limiting frame (34). The sealing sleeve (33) and the second fixed shaft (32) are provided in four sets and are symmetrically distributed on the front and rear sides of the first limiting frame (31) and the second limiting frame (34).
8. The integrated double-layer filter drainage pipe for retaining walls according to claim 1, characterized in that: The second fixing mechanism (4) includes a connecting block (41), which is fixedly connected to the right side of the outer flower tube (22). A fixing frame (43) is inserted inside the connecting block (41). The fixing frame (43) is slidably connected to the outer periphery of the right end of the inner flower tube (23). A limit shaft (42) is threaded inside the fixing frame (43).
9. The integrated double-layer filter drainage pipe for retaining walls according to claim 8, characterized in that: The limiting shaft (42) passes through the inside of the connecting block (41). There are two sets of the connecting block (41), the limiting shaft (42) and the fixing frame (43), which are symmetrically distributed on the upper and lower sides of the inner flower tube (23).