Porous drainage device for expansive soil side slope
By combining a diamond-shaped drainage structure with vibration interception components, the problems of rainwater erosion and drainage ditch blockage on expansive soil slopes were solved, achieving stability in slope safety and drainage performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN ENGINEERING CO LTD OF CHINA RAILWAY SEVENTH GROUP
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-17
AI Technical Summary
In existing drainage technologies for expansive soil slopes, rainwater tends to collect over large areas and flow straight downhill, causing erosion and severe soil and water loss on the slope. Furthermore, drainage ditches are prone to blockage, affecting roadbed safety and drainage effectiveness.
It adopts a diamond-shaped drainage structure, filter components and vibration interception components. The diamond-shaped drainage structure disperses rainwater into the drainage channel, and the vibration effect of the rotating shaft and cam removes impurities and prevents blockage.
It effectively prevents rainwater from eroding the slope, reduces the risk of drainage ditch blockage, keeps drainage unobstructed, protects roadbed safety, and ensures drainage effectiveness.
Smart Images
Figure CN224133874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage technology for expansive soil slopes, specifically to a porous drainage device for expansive soil slopes. Background Technology
[0002] Expansive soil slopes pose significant potential hazards, and isolating them from atmospheric influence is crucial for controlling their deterioration. Therefore, water-blocking and drainage construction is essential for preventing and controlling expansive soil slope disasters. Considering the characteristic of expansive soil to expand upon water absorption and shrink upon water loss, drainage methods for expansive soil slopes were studied to address issues such as roadbed expansion and contraction deformation, uneven settlement, and embankment slope instability caused by expansive soil.
[0003] Existing drainage technology for expansive soil slopes employs a three-layer integrated drainage structure consisting of geotextile, capillary retaining soil layer, and HDPE drainage grid. This structure achieves "seepage prevention and moisture retention" regulation of slope moisture by utilizing the synergistic "blocking-storage-drainage" effect of water under rainfall conditions and the barrier effect of water within the slope under evaporation conditions. This inhibits the generation and expansion of cracks, thereby preventing landslides on expansive soil slopes.
[0004] Currently, rainwater on some slopes tends to collect in large areas and flow straight down, which can erode the expansive soil slopes. Over time, this can lead to severe soil erosion on the slope, affecting the safety of the roadbed. Furthermore, debris flowing from the slope into the drainage ditch can easily cause blockages, resulting in poor drainage and affecting the normal operation of the drainage structure. Utility Model Content
[0005] In view of the shortcomings of the prior art mentioned above, the purpose of this utility model is to prevent rainwater on the expansive soil slope from accumulating and flowing straight down, thereby reducing the erosion of the slope by rainwater, protecting the safety of the roadbed, reducing the risk of blockage of drainage channels, maintaining smooth drainage, and vibrating and shaking off impurities on the filter plate to prevent excessive impurities in the rainwater from clogging the drainage channel, thus ensuring the drainage effect of the drainage channel.
[0006] To achieve the above objectives, the technical solution of this utility model is as follows:
[0007] A porous drainage device for expansive soil slopes includes an expansive soil slope body, on which multiple diamond-shaped drainage structures are laid.
[0008] The diamond-shaped drainage structure includes a straight guide pipe, a T-shaped guide pipe, and a cross-shaped guide pipe. A connector is fixed on the straight guide pipe, and a connection port is opened on the side of the connector. The T-shaped guide pipe is connected and fixed to the side of the connector through the connection port. Longitudinal connecting rods are provided on both sides of the cross-shaped guide pipe, and the other end of the longitudinal connecting rod is connected and fixed to the connector. A drainage channel is provided between two adjacent diamond-shaped drainage structures. A filter assembly is provided between two horizontally adjacent diamond-shaped drainage structures. A drainage ditch is opened at the bottom of the expansive soil slope body, and a vibration interception assembly is provided in the drainage ditch.
[0009] As a further embodiment of this utility model, the filter assembly includes a fixed side plate, a fixing bolt, a side filter screen, and a central filter screen. The multiple fixed side plates are fixed to the diamond-shaped drainage structure by fixing bolts. The central filter screen is located at the intersection of the drainage channels. Side filter screens are provided on both sides of the central filter screen. The fixed side plate, the side filter screen, and the central filter screen are integrally formed.
[0010] As a further embodiment of this utility model, the straight-line guide pipe, the T-shaped guide pipe, and the cross-shaped guide pipe are all provided with a water inlet net, and a geotextile layer is provided on the water inlet net.
[0011] As a further embodiment of this utility model, the connector is provided with a threaded hole, and the connector is fixed to the straight guide tube by a bolt passing through the threaded hole.
[0012] As a further embodiment of this utility model, the vibration interception assembly includes two fixed plates fixed in the drainage ditch, and two cams are rotatably provided at opposite ends of the two fixed plates, with a rotating shaft fixed between the two cams.
[0013] As a further embodiment of this utility model, a trough is also provided in the drainage ditch, a filter plate is slidably arranged in the trough, and a blocking frame is provided above the filter plate to block and intercept impurities on the filter plate.
[0014] As a further embodiment of this utility model, the top of the drainage ditch is covered with multiple drainage ditch covers, and the drainage ditch covers are provided with multiple water inlet holes.
[0015] As a further embodiment of this utility model, a retaining wall is fixed at the lower end of the expansive soil slope body.
[0016] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:
[0017] (1) When using this drainage device, rainwater on the expansive soil slope body will flow into the diamond drainage structure through the water inlet net. The diamond drainage structure can better adapt to the slope shape outside the drainage structure. Rainwater on the expansive soil slope body cannot be collected in a straight line and flow down in a large area, which can reduce the scouring of the slope by rainwater and protect the safety of the roadbed. Rainwater flows into the drainage channel through the gap between two adjacent diamond drainage structures. After flowing in, it passes through the side filter and the center filter, which can initially intercept the debris and impurities in the rainwater, prevent the debris in the rainwater from entering the drainage ditch through the drainage channel, reduce the risk of blockage of the drainage ditch channel, and keep the drainage smooth. When the impurity filter or the filter screen is damaged, the side filter and the center filter screen can be directly disassembled by fixing bolts and replaced with new filter screens.
[0018] (2) In severe weather conditions of storms and heavy rain, the rainwater flows too fast and flows into the drainage ditch through the drainage channel. At this time, due to the fast flow of rainwater, the water flow impacts the rotating shaft, thereby driving the rotating shaft to rotate, which in turn drives the cam to rotate. When the cam rotates, it will impact the filter plate that is slidably set inside the groove, producing a vibration effect. This will shake off the impurities on the filter plate, preventing too many impurities in the rain from clogging the drainage ditch and ensuring the drainage effect of the drainage ditch. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the filter assembly structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the vibration interception component structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the rhomboid drainage structure of this utility model;
[0023] Figure 5 This is a schematic diagram of the water inlet mesh structure of this utility model;
[0024] Figure 6 This is a schematic diagram of the connector of this utility model.
[0025] Explanation of reference numerals in the diagram: 1-Geotextile layer; 2-T-shaped diversion pipe; 3-Straight diversion pipe; 4-Cross-shaped diversion pipe; 41-Inlet net; 42-Longitudinal connecting rod; 5-Connector; 51-Connection port; 52-Threaded hole; 10-Expansive soil slope body; 11-Drainage channel; 12-Retaining wall; 13-Rhomboid drainage structure; 14-Drainage ditch; 60-Filter assembly; 61-Fixed side plate; 62-Fixing bolt; 63-Side filter screen; 64-Central filter screen; 70-Vibration interception assembly; 71-Drainage ditch cover; 72-Slide groove; 73-Filter plate; 74-Fixed plate; 75-Cam; 76-Rotating shaft. Detailed Implementation
[0026] The applicant will now describe the technical solutions of the present utility model clearly and completely 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 skilled in the art without creative effort are within the scope of protection of the present utility model.
[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, 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, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0028] 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.
[0029] Please see the appendix Figure 1-6A porous drainage device for expansive soil slopes includes an expansive soil slope body 10, on which multiple diamond-shaped drainage structures 13 are laid.
[0030] The rhomboid drainage structure 13 includes a straight guide pipe 3, a T-shaped guide pipe 2, and a cross-shaped guide pipe 4. A connector 5 is fixed on the straight guide pipe 3. A connection port 51 is opened on the side of the connector 5. The T-shaped guide pipe 2 is connected and fixed to the side of the connector 5 through the connection port 51. Both sides of the cross-shaped guide pipe 4 are provided with longitudinal connecting rods 42. The other end of the longitudinal connecting rods 42 is connected and fixed to the connector 5. A drainage channel 11 is provided between two adjacent rhomboid drainage structures 13. A filter assembly 60 is provided between two horizontally adjacent rhomboid drainage structures 13. A drainage ditch 14 is opened at the bottom of the expansive soil slope body 10. A vibration interception assembly 70 is provided in the drainage ditch 14. A water inlet net 41 is provided on the straight guide pipe 3, the T-shaped guide pipe 2, and the cross-shaped guide pipe 4. A geotextile layer 1 is provided on the water inlet net 41.
[0031] Specifically, during use, rainwater is dispersed through the straight-line diversion pipe 3, the T-shaped diversion pipe 2, and the cross-shaped diversion pipe 4. As it flows down the slope to the drainage ditch 14, rainwater on the expansive soil slope body 10 cannot be collected in a large area and flow straight down, thereby reducing the erosion of the slope by rainwater and protecting the safety of the roadbed.
[0032] The filter assembly 60 includes fixed side plates 61, fixing bolts 62, side filter screens 63, and a central filter screen 64. The fixed side plates 61 are fixed to the diamond-shaped drainage structure 13 by fixing bolts 62. The central filter screen 64 is located at the intersection of the drainage channels 11. Side filter screens 63 are provided on both sides of the central filter screen 64. The fixed side plates 61, side filter screens 63, and central filter screen 64 are integrally formed.
[0033] Specifically, when using this drainage device, rainwater located on the expansive soil slope body 10 will flow into the drainage channel 11 through the space between two adjacent diamond-shaped drainage structures 13. After flowing in, it will pass through the side filter screen 63 and the central filter screen 64, which can initially intercept the debris and impurities in the rainwater, preventing the debris in the rainwater from entering the drainage ditch 14 through the drainage channel 11. When the impurity filter or the filter screen is damaged, the side filter screen 63 and the central filter screen 64 can be directly disassembled by fixing bolts 62 and replaced with new filter screens.
[0034] The connector 5 has a threaded hole 52, and the connector 5 is fixed to the straight guide tube 3 by a bolt passing through the threaded hole 52.
[0035] The vibration interception assembly 70 includes two fixed plates 74 fixed inside the drainage ditch 14. Two cams 75 are rotatably provided at opposite ends of the two fixed plates 74, and a rotating shaft 76 is fixed between the two cams 75.
[0036] The drainage ditch 14 is also provided with a chute 72, in which a filter plate 73 is slidably disposed. A blocking frame is provided above the filter plate 73 to block and intercept impurities on the filter plate 73. The top of the drainage ditch 14 is covered with multiple drainage ditch cover plates 71, and multiple water inlet holes are provided on the drainage ditch cover plates 71.
[0037] In severe weather conditions such as storms and heavy rain, the rainwater flows too fast and enters the drainage ditch 14 through the drainage channel 11. Due to the high flow rate of the rainwater, the water flow impacts the rotating shaft 76, causing the rotating shaft 76 to rotate. This, in turn, causes the cam 75 to rotate. When the cam 75 rotates, it impacts the filter plate 73, which is slidably installed inside the slide groove 72, generating a vibration effect. This vibration shakes off impurities on the filter plate 73, preventing excessive impurities in the rainwater from clogging the drainage ditch 14 and ensuring the drainage effect of the drainage ditch 14.
[0038] A retaining wall 12 is fixed to the lower end of the expansive soil slope body 10. The retaining wall 12 is installed to prevent stones or soil clods on the expansive soil slope body 10 from rolling onto the road and affecting the normal driving of vehicles on the road.
[0039] The working principle of this utility model is as follows:
[0040] When using this drainage device, rainwater located on the expansive soil slope body 10 will flow into the drainage channel 11 through the space between two adjacent diamond-shaped drainage structures 13. After flowing in, it will pass through the side filter screen 63 and the central filter screen 64, which can initially intercept the debris and impurities in the rainwater, preventing the debris in the rainwater from entering the drainage ditch 14 through the drainage channel 11. When the impurity filter or the filter screen is damaged, the side filter screen 63 and the central filter screen 64 can be directly disassembled by fixing bolts 62 and replaced with new filter screens.
[0041] In severe weather conditions such as storms and heavy rain, the rainwater flows too fast and flows into the drainage ditch 14 through the drainage channel 11. Due to the high flow rate of the rainwater, the water flow impacts the rotating shaft 76, causing the rotating shaft 76 to rotate. This, in turn, causes the cam 75 to rotate. When the cam 75 rotates, it impacts the filter plate 73, which is slidably installed inside the slide groove 72. This causes the filter plate 73 to vibrate, which in turn shakes off impurities on the filter plate 73, preventing excessive impurities in the rainwater from clogging the drainage ditch 14 and ensuring the drainage effect of the drainage ditch 14.
[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A device for draining a swelling soil slope, comprising a swelling soil slope body (10), characterized in that, Multiple diamond-shaped drainage structures (13) are laid on the expansive soil slope body (10). The rhomboid drainage structure (13) includes a straight guide pipe (3), a T-shaped guide pipe (2) and a cross-shaped guide pipe (4). A connector (5) is fixed on the straight guide pipe (3). A connection port (51) is opened on the side of the connector (5). The T-shaped guide pipe (2) is connected and fixed to the side of the connector (5) through the connection port (51). Both sides of the cross-shaped guide pipe (4) are provided with longitudinal connecting rods (42). The other end of the longitudinal connecting rods (42) is connected and fixed to the connector (5). A drainage channel (11) is provided between two adjacent rhomboid drainage structures (13). A filter assembly (60) is provided between two horizontally adjacent rhomboid drainage structures (13). A drainage ditch (14) is opened at the bottom of the expansive soil slope body (10). A vibration interception assembly (70) is provided in the drainage ditch (14).
2. The device according to claim 1, wherein The filter assembly (60) includes a fixed side plate (61), a fixing bolt (62), a side filter screen (63), and a central filter screen (64). The fixed side plates (61) are fixed to the diamond-shaped drainage structure (13) by fixing bolts (62). The central filter screen (64) is located at the intersection of the drainage channels (11). Side filters (63) are provided on both sides of the central filter screen (64). The fixed side plate (61), the side filter screen (63), and the central filter screen (64) are integrally formed.
3. The device according to claim 1, wherein The straight-line guide pipe (3), the T-shaped guide pipe (2) and the cross-shaped guide pipe (4) are all equipped with water inlet nets (41), and the water inlet nets (41) are equipped with geotextile layers (1).
4. The device according to claim 1, wherein The connector (5) has a threaded hole (52), and the connector (5) is fixed to the straight guide tube (3) by a bolt passing through the threaded hole (52).
5. The device of claim 1, wherein, The vibration interception assembly (70) includes two fixed plates (74) fixed inside the drainage ditch (14). Two cams (75) are rotatably provided at opposite ends of the two fixed plates (74), and a rotating shaft (76) is fixed between the two cams (75).
6. The device according to claim 5, wherein The drainage ditch (14) is also provided with a chute (72), in which a filter plate (73) is slidably arranged. A blocking frame is provided above the filter plate (73) to block and intercept impurities on the filter plate (73).
7. The device of claim 1, wherein the device is a device for draining water from an expansive soil slope. The top of the drainage ditch (14) is covered with multiple drainage ditch covers (71), and multiple water inlets are provided on the drainage ditch covers (71).
8. The device of claim 1, wherein, A retaining wall (12) is fixed at the lower end of the expansive soil slope body (10).