Side slope internal drainage structure easy to clean
By embedding U-shaped drainage strips and filter layers into the slope, the problem of water being difficult to drain during rainfall is solved, improving the slope's stability and drainage efficiency, preventing groove blockage, and ensuring the slope's safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI NEW DEV TRANSPORT GRP CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-12
AI Technical Summary
During continuous rainfall, the slope has difficulty draining water quickly, which reduces the cohesion between soil particles, increases its self-weight, reduces its resistance to sliding, and makes it prone to softening and collapse, threatening the slope's stability and environmental safety.
Design an easy-to-clean internal drainage structure for slopes, including U-shaped drainage strips embedded deep in the slope, with grooves and porous permeable plates on top, a filter layer composed of fine, medium and coarse granules, a scraper to prevent impurities from accumulating, and drainage strips tilted to facilitate drainage.
It improves the drainage efficiency of shallow water on slopes, enhances slope stability, reduces the risk of groove blockage, and ensures the smooth flow and reliability of the drainage system.
Smart Images
Figure CN224227944U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slope stabilization technology, and in particular to an easy-to-clean internal drainage structure for slopes. Background Technology
[0002] During the service of existing slopes, when encountering continuous rainfall, it is difficult to quickly drain water from the surface and shallow layers of the slope, leaving the shallow soil in a saturated state. The water infiltration reduces the cohesion between soil particles and increases the soil's self-weight, resulting in a decrease in the anti-sliding force of local areas of the slope. The shallow layer of the slope is prone to partial softening and collapse, seriously threatening the stability of the slope and the safety of the surrounding environment.
[0003] Therefore, an easy-to-clean internal drainage structure for slopes is proposed. Utility Model Content
[0004] The purpose of this invention is to provide an easy-to-clean internal drainage structure for slopes, aiming to solve or improve at least one of the aforementioned technical problems.
[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides an easy-to-clean internal drainage structure for slopes, including a drainage strip. One end of the drainage strip is embedded in the deep soil of the slope, and the other end protrudes from the shallow soil of the slope. A groove is provided at the top of the drainage strip, and the groove passes through both ends of the drainage strip, making the drainage strip U-shaped. Two first porous permeable plates are installed in the groove. The two first porous permeable plates are arranged vertically and horizontally, and there is a gap between the lower first porous permeable plate and the bottom wall of the groove. A filter layer is provided between the two first porous permeable plates.
[0006] Preferably, the filter layer includes a fine-grained layer, a medium-grained layer, and a coarse-grained layer laid between the two first porous permeable plates, wherein the fine-grained layer, the medium-grained layer, and the coarse-grained layer are arranged sequentially from bottom to top, and the particle size of the fine-grained layer, the medium-grained layer, and the coarse-grained layer increases sequentially.
[0007] Preferably, a second porous permeable plate is laid between the fine-grained layer and the medium-grained layer, and between the medium-grained layer and the coarse-grained layer.
[0008] Preferably, geotextile is laid between the fine-grained layer and the first porous permeable plate located below, and between the fine-grained layer and the adjacent second porous permeable plate.
[0009] Preferably, steps are provided on the two inner sidewalls opposite to each other of the groove, and the first porous permeable plate located in the lower layer is placed on the two steps.
[0010] Preferably, a partition plate is placed on the inner bottom wall of the groove. The partition plate includes an outer frame, and multiple scrapers are fixed inside the outer frame. The multiple scrapers are arranged at equal intervals along the length direction of the groove.
[0011] Preferably, the drainage strip has an angle with the horizontal plane, which makes the drainage strip inclined, and the end of the drainage strip embedded in the deep soil of the slope is the high end.
[0012] Preferably, baffles are fixedly connected to both ends of the drainage strip, and a gap is provided between the bottom of the baffle and the top of the partition plate; multiple protrusions are fixedly connected to the lower end face of the drainage strip, and the protrusions are located on the inner bottom wall of the groove.
[0013] This utility model discloses the following technical effects: by embedding the drainage strip into the slope, when there is continuous rainfall, rainwater in the shallow soil of the slope will flow into the groove through the filter layer and be discharged to the outside of the slope through the bottom of the groove, thereby improving the drainage efficiency of the shallow water of the slope and improving the stability of the slope; the filter layer can achieve preliminary filtration of water flow, thereby facilitating the maintenance of the bottom of the groove, reducing the possibility of groove blockage due to sediment or impurity accumulation, and improving the reliability of use. Attached Figure Description
[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the end of the drainage strip in this utility model;
[0017] Figure 3 This is a schematic diagram of the filter layer structure in this utility model;
[0018] Figure 4 This is a schematic diagram of the partition plate in this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the second porous permeable plate in this utility model;
[0020] Figure 6 This is a schematic diagram of the structure of this utility model installed on a slope.
[0021] In the diagram: 1. Drainage strip; 2. Groove; 3. First porous permeable board; 4. Fine-grained layer; 5. Medium-grained layer; 6. Coarse-grained layer; 7. Second porous permeable board; 8. Geotextile; 9. Step; 10. Outer frame; 11. Scraper; 12. Baffle; 13. Protrusion. Detailed Implementation
[0022] 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.
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0024] The infiltration of rainwater onto a slope surface is a complex and dynamic process. In the initial wetting stage, the shallow soil layer is relatively dry with large pores, allowing for rapid water absorption and a high infiltration rate. As infiltration continues, air in the soil pores is gradually expelled, and the shallow soil pores are filled with water. At this stage, the movement of water within the soil is influenced by a combination of factors, including gravity, the adsorption force of soil particles, and the resistance to water flow in the pores, causing the infiltration rate to gradually slow down. Simultaneously, small runoff channels may form on the slope surface, allowing some rainwater to flow away, reducing the amount of infiltrated water. During periods of continuous rainfall, the shallow soil layer remains saturated, making it difficult to quickly drain water from the slope surface and shallow layers. This is mainly due to design flaws or insufficient drainage capacity in the slope drainage system, which cannot effectively handle the surface runoff generated by large amounts of rainfall in a short period. As rainfall continues, surface water accumulates but cannot be drained in time, leading to water infiltration into the soil. Due to the porous structure of the soil, water gradually accumulates within it, forming water-filled gaps through convergence and infiltration. This is especially true for the shallow soil layers of slopes, where the presence of these gaps alters the original mechanical equilibrium between the slope and the soil. The infiltration of water reduces the cohesion between soil particles and increases the soil's weight, leading to a decrease in the slope's resistance to sliding in certain areas. Under these unfavorable conditions, the shallow slope is highly susceptible to partial softening and collapse, severely threatening the slope's stability and the safety of the surrounding environment.
[0025] Reference Figures 1-6This utility model provides an easy-to-clean internal drainage structure for slopes, including a drainage strip 1. One end of the drainage strip 1 is embedded in the deep soil of the slope, and the other end protrudes from the shallow soil of the slope. A groove 2 is provided on the top of the drainage strip 1, and the groove 2 passes through both ends of the drainage strip 1, so that the drainage strip 1 is U-shaped. Two first porous permeable plates 3 are installed in the groove 2. The two first porous permeable plates 3 are arranged vertically and horizontally. There is a gap between the lower first porous permeable plate 3 and the bottom wall of the groove 2. A filter layer is provided between the two first porous permeable plates 3.
[0026] The drainage strip 1 is embedded in the slope. When there is continuous rainfall, rainwater in the shallow soil of the slope will flow into the groove 2 through the filter layer and be discharged to the outside of the slope through the bottom of the groove 2, thereby improving the drainage efficiency of the shallow water of the slope and improving the stability of the slope. The two layers of first porous permeable plates 3 in the groove 2 support the filter layer in the middle. The filter layer can achieve preliminary filtration of water flow, thereby facilitating the maintenance of the bottom of the groove 2, reducing the possibility of groove blockage due to sediment or impurity accumulation, and improving the reliability of use.
[0027] In some alternative embodiments, the filter layer includes a fine-particle layer 4, a medium-particle layer 5, and a coarse-particle layer 6 laid between two first porous permeable plates 3, arranged sequentially from bottom to top, with the particle size of the fine-particle layer 4, the medium-particle layer 5, and the coarse-particle layer 6 increasing sequentially.
[0028] The sand and gravel particles that make up the filter layer should be durable and should not change the properties of the filter layer due to freeze-thaw processes, biological and chemical erosion; the sand and gravel particles that make up the filter layer should be clean, non-sticky particles and should not contain weeds or other easily decaying substances that could cause the filter layer to become clogged.
[0029] Furthermore, the coarse-grained layer 6 is selected from one or more of coarse gravel, pebbles or boulders, with a particle size range of 20-100 mm;
[0030] The medium-grained layer 5 consists of medium or coarse gravel with a particle size range of 5-20 mm.
[0031] The fine-grained layer 4 is selected from one or more of fine sand, medium sand, or fine gravel, with a particle size range of 0.1-5 mm.
[0032] In some alternative embodiments, a second porous permeable plate 7 is laid between the fine-grained layer 4 and the medium-grained layer 5, and between the medium-grained layer 5 and the coarse-grained layer 6, respectively.
[0033] In some alternative embodiments, geotextile 8 is laid between the fine-grained layer 4 and the first porous permeable plate 3 located below, and between the fine-grained layer 4 and the adjacent second porous permeable plate 7.
[0034] The second porous permeable plate 7 and the first porous permeable plate 3 have the same structure. Both are support plates with holes, and the size of the holes is set according to actual needs.
[0035] The first porous permeable plate 3 located on the upper layer has the largest pores, which protect the structure of the coarse-grained layer 6 and ensure that the coarse-grained layer 6 does not leak out from the pores;
[0036] The pores of the two second porous permeable plates 7 adjacent to the medium-grained layer 5 are smaller than the pores of the first porous permeable plate 3 located in the upper layer, and they respectively support the medium-grained layer 5 and the coarse-grained layer 6.
[0037] The first porous permeable plate 3 located in the lower layer has the smallest pores and plays a supporting role for the fine-grained layer 4. Since the particle size of the fine-grained layer 4 is very small, geotextile 8 is laid on the upper and lower layers of the fine-grained layer 4 respectively. The geotextile 8 wraps the fine-grained layer 4 to prevent the fine-grained layer 4 from being lost. The geotextile 8 and the fine-grained layer 4 work together to play a filtering role.
[0038] Therefore, the first porous permeable board 3, geotextile 8, fine-grained layer 4, geotextile 8, second porous permeable board 7, medium-grained layer 5, second porous permeable board 7, coarse-grained layer 6, and first porous permeable board 3 are laid sequentially from bottom to top in the groove 2.
[0039] In some alternative embodiments, steps 9 are provided on the two inner sidewalls opposite to each other of the groove 2, and the first porous permeable plate 3 located in the lower layer is placed on the two steps 9.
[0040] Groove 2 is a variable diameter groove, consisting of an upper groove and a lower groove. The width of the lower groove is smaller than the width of the upper groove, thus forming a step 9 at the junction of the lower groove and the upper groove.
[0041] In some alternative embodiments, a partition plate is placed on the inner bottom wall of the groove 2. The partition plate includes an outer frame 10, and a plurality of scrapers 11 are fixed inside the outer frame 10. The plurality of scrapers 11 are arranged at equal intervals along the length direction of the groove 2.
[0042] Although a fine-grained layer 4, a medium-grained layer 5, and a coarse-grained layer 6 are set up for filtration, it is difficult to ensure that each component maintains its original performance as the service life increases. For example, the geotextile may be damaged. In such cases, impurities carried by water or the filler material of each layer will accumulate at the bottom of the groove 2. Therefore, a partition plate is set up, and the scraper 11 forms multiple partitions inside the outer frame 10. When impurities enter the groove 2, the scraper 11 makes the impurities settle and distribute evenly, preventing concentrated accumulation and reducing the difficulty of cleaning the settled impurities.
[0043] In some alternative embodiments, the drainage strip 1 has an angle with the horizontal plane, thereby tilting the drainage strip 1, with one end of the drainage strip 1 embedded in the deep soil of the slope being the high end.
[0044] The drainage strip 1 forms an angle θ with the horizontal plane to facilitate better drainage. To prevent the drainage strip 1 from slipping out of the soil due to friction under gravity, the angle should not be too large. Therefore, the slope value of the angle θ ranges from 5 degrees to 15 degrees.
[0045] In some alternative embodiments, baffles 12 are fixedly connected to both ends of the drainage strip 1, and a gap is provided between the bottom of the baffle 12 and the top of the partition plate; a plurality of protrusions 13 are fixedly connected to the lower end face of the drainage strip 1, and the protrusions 13 are located on the inner bottom wall of the groove 2.
[0046] The baffle 12 protects both sides of the filter layer to prevent sand and gravel from being lost, and at the same time limits the second porous permeable plate 7 and the first porous permeable plate 3 to prevent them from slipping out of the groove 2.
[0047] Furthermore, the height of the protrusion 13 is no higher than the height of the outer frame 10, thus limiting the outer frame 10 and preventing it from slipping out of the groove 2. In subsequent maintenance, the end of the outer frame 10 can be lifted upwards beyond the protrusion 13, and then the outer frame 10 can be pulled out. Impurities in the partition of the outer frame 10 are scraped out simultaneously to keep the inside of the groove 2 unobstructed. Then the outer frame 10 can be put back.
[0048] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 utility model 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, they should not be construed as limitations on this utility model.
[0049] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. An easy-to-clean internal drainage structure for slopes, characterized in that: The device includes a drainage strip (1), one end of which is embedded in the deep soil of the slope, and the other end protrudes from the shallow soil of the slope. A groove (2) is provided on the top of the drainage strip (1), and the groove (2) passes through both ends of the drainage strip (1) to make the drainage strip (1) U-shaped. Two first porous permeable plates (3) are installed in the groove (2), and the two first porous permeable plates (3) are arranged at intervals. A gap is provided between the lower first porous permeable plate (3) and the bottom wall of the groove (2). A filter layer is provided between the two first porous permeable plates (3).
2. The easily cleanable internal drainage structure for slopes according to claim 1, characterized in that: The filter layer includes a fine-grained layer (4), a medium-grained layer (5), and a coarse-grained layer (6) laid between the two first porous permeable plates (3). The fine-grained layer (4), the medium-grained layer (5), and the coarse-grained layer (6) are arranged sequentially from bottom to top, and the particle size of the fine-grained layer (4), the medium-grained layer (5), and the coarse-grained layer (6) increases sequentially.
3. The easily cleanable internal drainage structure for slopes according to claim 2, characterized in that: A second porous permeable plate (7) is laid between the fine-grained layer (4) and the medium-grained layer (5), and between the medium-grained layer (5) and the coarse-grained layer (6).
4. The easily cleanable internal drainage structure for slopes according to claim 3, characterized in that: Geotextiles (8) are laid between the fine-grained layer (4) and the first porous permeable plate (3) located below, and between the fine-grained layer (4) and the adjacent second porous permeable plate (7).
5. The easily cleanable internal drainage structure for slopes according to claim 1, characterized in that: Steps (9) are provided on the two inner sidewalls opposite to each other of the groove (2), and the first porous permeable plate (3) located in the lower layer is placed on the two steps (9).
6. The easily cleanable internal drainage structure for slopes according to claim 1, characterized in that: A partition plate is placed on the inner bottom wall of the groove (2). The partition plate includes an outer frame (10). Multiple scrapers (11) are fixed inside the outer frame (10). The multiple scrapers (11) are arranged at equal intervals along the length direction of the groove (2).
7. The easily cleanable internal drainage structure for slopes according to claim 6, characterized in that: The drainage strip (1) has an angle with the horizontal plane, which makes the drainage strip (1) tilted. The end of the drainage strip (1) embedded in the deep soil of the slope is the high end.
8. The easily cleanable internal drainage structure for slopes according to claim 7, characterized in that: The drainage strip (1) is fixedly connected to baffles (12) at both ends, and there is a gap between the bottom of the baffle (12) and the top of the partition plate; a plurality of protrusions (13) are fixedly connected to the lower end face of the drainage strip (1), and the protrusions (13) are located on the inner bottom wall of the groove (2).