Slope protection device for reconstruction and extension of road
By designing and expanding the slope protection device for highways, including erosion passages, first drainage passages, connecting water passages and second drainage passages, combined with drainage walls and guides, the problems of existing retaining walls blockage and sewage splashing in rainy days are solved, and more effective mud and water discharge and sewage splashing are achieved.
Patent Information
- Application Number
- CN202510382818.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-05-23
AI Technical Summary
Existing retaining walls are prone to problems such as drainage passages and sewage splashing on rainy days, affecting road safety.
A slope protection device for renovating and expanding highways is designed, including a erosion passage, a first drainage passage, a connecting passage and a second drainage passage. Through structures such as drainage walls and guides, the effective dispersion and discharge of mud and water is achieved to prevent sewage from splashing.
It effectively reduces the accumulation of impurities in mud and water in the drainage channel, prevents sewage from splashing on the road surface or driving on vehicles, and improves drainage function and overall protection effect.
Smart Images
Figure CN120026653A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of baffle walls, and in particular relates to a slope protection device for highway reconstruction and expansion. Background Art
[0002] During the expansion and construction of a highway, it is necessary to install retaining walls between the shoulders of the highway and the slopes on both sides of the highway. Retaining walls refer to structures that support roadbed fill or hillside soil and prevent fill or soil from deforming and becoming unstable. They are often used on roadbed slopes, reservoir embankments, etc., and can be divided into three categories according to their stiffness and displacement mode: rigid retaining walls, flexible retaining walls and temporary supports.
[0003] In the prior art, in order to facilitate the retaining wall to drain the water close to the slope, an inclined channel is often set inside the existing retaining wall to facilitate the drainage of water. However, in rainy weather, after the rain washes the slope, the rainwater seeps into the soil layer of the slope to produce a large amount of muddy water. The muddy water will be discharged along the drainage channel of the retaining wall. After the rain stops, the mud residue in the muddy water solidifies, which can easily lead to blockage of the drainage channel. At the same time, when the water flow is large, the water discharged from the top of the retaining wall or the drainage channel located at a higher position on the wall will splash outwards. The splashed water may pour on the road surface or directly splash on the moving vehicles, posing a safety hazard to the vehicles driving on the road. Summary of the invention
[0004] In view of this, the present invention provides a slope protection device for highway reconstruction and expansion, which aims to reduce the accumulation of impurities in muddy water in the drainage channel and prevent sewage from splashing onto the road surface or moving vehicles.
[0005] The technical solution adopted by the present invention is as follows:
[0006] A slope protection device for highway reconstruction and expansion includes a wall body, a wall back is provided on one side of the wall body, and the wall back contacts the highway slope, a wall breast is provided on the side of the wall body away from the wall back, and the wall breast faces the highway road surface, and a drainage mechanism is provided inside the wall; the drainage mechanism includes:
[0007] A flushing channel, the flushing channel is opened at the top of the wall and extends toward the bottom of the wall;
[0008] A first drainage channel, wherein both ends of the first drainage channel in the length direction respectively penetrate the wall breast and the wall back, and the top of the first drainage channel is connected to the scouring channel, and a drainage wall is provided at the bottom of the first drainage channel;
[0009] A communicating water channel, wherein the communicating water channel is arranged at the bottom of the first drainage channel, and the top of the communicating water channel is communicated with the drain wall;
[0010] A second drainage channel, the second drainage channel is arranged at the bottom of the connecting water channel, and both ends of the second drainage channel in the length direction are respectively connected to the wall breast and the connecting water channel;
[0011] A boss is provided at the bottom of the first drain channel near the wall breast, the drainage wall is provided at the bottom of the first drain channel near the wall back, and the length of the second drain channel is less than the width of the wall.
[0012] As a preferred technical solution, a back groove is opened on the back of the wall. When the back of the wall collides with the road slope, a cavity is formed between the back groove and the slope. A filter layer is provided in the cavity, wherein the filter layer collides with one end of the first drain channel passing through the back of the wall, and the filter layer filters the muddy water flowing into the first drain pipe from the road slope.
[0013] Furthermore, it also includes a backfill layer, which is arranged on the top of the filter layer, and the top of the backfill layer and the top of the wall are located on the same end surface, and the gap between the back trough and the road slope is filled by the backfill layer.
[0014] Furthermore, the first drainage channel and the second drainage channel are both inclined toward the wall breast.
[0015] Furthermore, the drainage wall is located directly below the connection point between the flushing channel and the first drainage channel, wherein a plurality of drainage holes are opened on the drainage wall, and the muddy water in the first drainage channel is introduced into the second drainage channel through the drainage holes.
[0016] Furthermore, the flushing channel has a conical structure, and a water guide is provided on the inner wall of the flushing channel, wherein the guide is inclined toward the direction of the first drainage channel.
[0017] Furthermore, the guide member comprises:
[0018] A guide plate, the guide plate being fixed on the inner wall of the flushing channel, and the guide plate guides the water in the flushing channel into the first drainage channel;
[0019] A screening layer, the screening layer is arranged on the surface of the guide plate;
[0020] Among them, a plurality of guide plates are relatively staggeredly distributed in the length direction of the inner wall of the flushing channel.
[0021] Furthermore, a grid cover for shielding debris is provided at the top opening of the flushing channel.
[0022] Furthermore, the wall breast is an inclined structure, and a block is provided on the top of the wall breast to block the mud and water on the top of the wall.
[0023] Furthermore, a drainage ditch is provided at the bottom of the wall breast for receiving muddy water discharged by the drainage mechanism, wherein the height difference between one end of the second drainage channel connected to the wall breast and the drainage ditch is not higher than 50 cm.
[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0025] 1. Through the setting of the flushing water channel, when the water volume is large, it can receive rainwater and the mud and water mixture flowing from the top of the slope to the top of the wall, and use its own vertical channel structure to make the mixture fall under the action of gravity to impact the mud and water in the first drainage channel, effectively breaking up the mud blocks and preventing the mud from being contaminated on the inner wall of the first drainage channel, thereby improving the drainage function of the wall; during the entire drainage process, the flushing water channel works in coordination with other drainage components to ensure that the mud and water can be discharged smoothly and maintain the normal operation of the drainage system.
[0026] 2. Through the setting of the drainage wall, when the muddy water enters the first drainage channel and flows toward the wall breast, part of the muddy water will pass through the drainage wall and enter the second drainage channel through the connecting water channel. This process causes the drainage wall to exert a downward pulling force on the muddy water in the first drainage channel, slowing down the flow rate of the muddy water and reducing the drainage volume, which helps the muddy water to be discharged slowly and prevents sewage from splashing onto the road or moving vehicles. At the same time, the drainage holes on the drainage wall can intercept larger soil particles, and the intercepted particles are impacted by the liquid in the scouring channel and are not easy to block the drainage wall, further ensuring the smooth flow of the drainage channel and reducing the risk of the drainage channel being blocked by mud deposition.
[0027] 3. Through the setting of the second drain channel, which is shorter in length and lower in position, muddy water can be quickly discharged to the side of the wall breast, effectively preventing muddy water from accumulating inside the wall and reducing the risk of wall erosion; the shorter length is also convenient for subsequent maintenance by cleaning personnel, and it cooperates with other components in the entire drainage system to ensure the efficiency and stability of drainage, and improve the practicality and durability of the entire protective device. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The present invention will now be described by way of example with reference to the accompanying drawings, in which:
[0029] Figure 1 It is a schematic diagram of the structure of the slope protection device for highway reconstruction and expansion provided by the present invention;
[0030] Figure 2 It is a schematic diagram of the cross-sectional effect of the wall provided by the present invention;
[0031] Figure 3 It is a schematic diagram of the internal structure of the first drainage channel provided by the present invention.
[0032] Explanation of the reference numerals: wall - 1; wall breast - 2; wall back - 3; back groove - 4; backfill layer - 5; filter layer - 6; scouring channel - 7; first drainage channel - 8; connecting water channel - 9; second drainage channel - 10; block - 11; drainage wall - 12; boss - 13. DETAILED DESCRIPTION
[0033] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] In the prior art, in order to enable the retaining wall to effectively drain the accumulated water near the side of the slope, an inclined drainage channel is usually constructed inside the current retaining wall structure to ensure the smooth discharge of water. However, in rainy weather, rainwater washes the slope, and some rainwater seeps into the soil layer of the slope, forming a large amount of mud and water mixture. These muddy waters will flow down along the preset drainage channel of the retaining wall. When the rain stops, the mud residue in the muddy water will solidify and settle in the drainage channel, which can easily lead to blockage of the drainage channel and affect the normal operation of the drainage system. At the same time, when the rainfall is large and the water flow exceeds a certain limit, the water discharged from the drainage channel at the top of the retaining wall or the higher position of the wall will splash due to the flow rate and impact force. The splashing water may directly pour onto the road surface, causing the road surface to be slippery; or splash onto the surface of the vehicle traveling on the road, affecting the driver's sight, all of which pose a potential threat to the safety of vehicles traveling on the road.
[0035] Embodiment 1
[0036] Therefore, in order to solve the above problems and realize the function of reducing the sediment accumulation in the drainage channel and preventing the sewage from splashing, the present invention discloses a slope protection device for highway reconstruction and expansion, referring to Figure 1-Figure 3 , including a wall body 1, a wall back 3 is provided on one side of the wall body 1, and the wall back 3 is in contact with the road slope, and a wall breast 2 is provided on the side of the wall body 1 away from the wall back 3, and the wall breast 2 faces the road surface. Specifically, a drainage mechanism is provided inside the wall body 1.
[0037] In this embodiment, in rainy weather, muddy water inside the slope soil layer will enter the wall body 1 from the wall back 3, and then be discharged to the outside from the wall breast 2 through the drainage mechanism.
[0038] The drainage mechanism includes a flushing channel 7, a first drain channel 8, a connecting water channel 9, and a second drain channel 10. The flushing channel 7 is opened at the top of the wall 1 and extends toward the bottom of the wall 1. The two ends of the first drain channel 8 in the length direction respectively penetrate the wall breast 2 and the wall back 3, and the top of the first drain channel 8 is connected with the flushing channel 7. The bottom of the first drain channel 8 is provided with a drainage wall 12. The connecting water channel 9 is provided at the bottom of the first drain channel 8, and the top of the connecting water channel 9 is connected with the drainage wall 12. The second drain channel 10 is provided at the bottom of the connecting water channel 9. The two ends of the second drain channel 10 in the length direction are respectively connected to the wall breast 2 and the connecting water channel 9, wherein a boss 13 is provided on the side of the bottom of the first drain channel 8 close to the wall breast 2, the drainage wall 12 is provided at the bottom of the first drain channel 8 close to the wall back 3, and the length of the second drain channel 10 is less than the width of the wall 1.
[0039] In a specific embodiment, when the amount of water is large, after the muddy water in the slope soil layer flows from the wall back 3 into the first drain 8, the first drain 8 can guide the muddy water toward the wall breast 2. At this time, the flushing channel 7 can receive rainwater and muddy water flowing from the top of the slope to the top of the wall 1. The mixed liquid of rainwater and muddy water can flow into the first drain 8 along the flushing channel 7. Since the flushing channel 7 is a vertical channel, the mixed liquid falls under the action of gravity and impacts the muddy water in the first drain 8, thereby dispersing the mud blocks in the muddy water, in order to prevent the mud in the muddy water from being contaminated inside the first drain and causing blockage of the first drain, thereby improving the drainage function of the wall 1.
[0040] Due to the setting of the drainage wall 12, after the muddy water enters the first drain channel 8, the muddy water will pass through the drainage wall 12 in the process of flowing along the first drain channel 8 to the wall breast 2. At this time, part of the muddy water will pass through the drainage wall 12 to flow to the connecting water channel 9 and enter the second drain channel 10, so that the drainage wall 12 will produce a certain downward pulling force on the muddy water in the first drain channel 8, thereby slowing down the flow rate of the muddy water in the first drain channel 8, and at the same time helping to reduce the drainage volume of the first drain channel 8, in the hope of preventing the sewage discharged from the high place of the wall breast 2 from splashing onto the road or moving vehicles. Specifically, by slowing down the flow rate of the muddy water in the first drain channel 8 and reducing the drainage volume, it is helpful to make the muddy water more smoothly discharged from the wall breast 2, and it is not easy to produce a large amount of muddy water splashing.
[0041] The connecting waterway 9 can smoothly guide part of the muddy water into the second drain channel 10. Due to its short length, the second drain channel 10 can quickly discharge the muddy water to the side of the wall breast 2, thereby effectively preventing the muddy water from accumulating inside the wall and reducing the risk of wall erosion. At the same time, the second drain channel 10 with a lower position and shorter length is also convenient for subsequent maintenance by cleaning personnel.
[0042] Furthermore, when the water volume is small, due to the long length of the first drainage channel 8, the muddy water entering the first drainage channel 10 from the slope soil layer is likely to flow along the inner wall of the first drainage channel 10 without being discharged. For example, due to the small amount of water, the water flow will gradually slow down after moving along the length direction of the inner wall of the first drainage channel 10 for a distance, and finally stagnate in the drainage channel to form mud accumulation. This has an adverse effect on the normal drainage function of the drainage channel, and may also cause corrosion of the inner wall of the drainage channel due to the long-term retention of muddy water.
[0043] At this time, the boss 13 can block the water flow, thereby blocking the muddy water on the drain wall 12, so that the muddy water can enter the second drain channel 10 through the connecting waterway 9 and finally be discharged through the second drain channel 10. This arrangement helps to improve the accumulation of muddy water in the first drain channel and reduce the occurrence of poor drainage and inner wall corrosion caused by mud accumulation.
[0044] Preferably, the length of the second drain channel 10 is one third of the width of the wall 1 .
[0045] In addition, in order to prevent muddy water from being retained in the first drain channel 8 and the second drain channel 10 , the first drain channel 8 and the second drain channel 10 are both inclined toward the wall breast 2 .
[0046] It is worth mentioning that the drainage wall 12 can also play a role in filtering larger soil particles in the muddy water. Specifically, the drainage wall 12 is located directly below the connection between the flushing channel 7 and the first drain channel 8, wherein a plurality of drainage holes are opened on the drainage wall 12, and the muddy water in the first drain channel 8 is introduced into the second drain channel 8 through the drainage holes. The soil particles with an outer diameter larger than the inner diameter of the drainage holes can be intercepted through the drainage holes. At the same time, since the drainage wall 12 is located at the bottom of the flushing channel 7, these intercepted soil particles are more susceptible to the impact from the liquid in the flushing channel 7, so as to prevent these soil particles from being blocked on the drainage wall 12.
[0047] Furthermore, the wall breast 2 is an inclined structure, and a block 11 is provided on the top of the wall breast 2, which blocks the mud and water on the top of the wall 1. The block 11 can block the water flowing to the top of the wall 1, so that the water can smoothly enter the flushing waterway 7, thereby preventing the water on the top of the wall 1 from splashing onto the road or moving vehicles.
[0048] At the same time, a drainage ditch is provided at the bottom of the wall breast 2 for receiving the muddy water discharged through the drainage mechanism, wherein the height difference between one end of the second drainage channel 10 connected to the wall breast 2 and the drainage ditch is not higher than 50 cm, which helps to prevent the muddy water in the second drainage channel 10 from forming excessive impact force due to the large height difference during the discharge process, thereby reducing the splashing of muddy water onto the road surface due to the large impact force. At the same time, the muddy water in the first drainage channel 8 can flow to the drainage ditch along the inclined wall breast 2.
[0049] Embodiment 2
[0050] On the basis of the first embodiment, in order to prevent the soil in the slope soil layer from directly entering the first drainage channel 8, refer to Figure 2 The present invention also includes a filter layer 6 for preliminarily filtering impurities in muddy water. Specifically, a back groove 4 is opened on the wall back 3. When the wall back 3 collides with the road slope, a cavity is formed between the back groove 4 and the slope. A filter layer 6 is provided in the cavity, wherein the filter layer 6 collides with one end of the first drain 8 passing through the wall back 3, and the filter layer 6 filters the muddy water flowing into the first drain pipe 8 from the road slope.
[0051] In this embodiment, the filter layer 6 is a multi-layer filter structure, which includes a primary filter layer, an intermediate filter layer and a fine filter layer. The primary filter layer is mainly composed of filter materials with larger pores, which are used to intercept larger soil particles and debris; the intermediate filter layer uses filter materials with medium pores to further filter smaller particles; the fine filter layer is composed of filter materials with extremely fine pores, which can effectively intercept fine suspended matter and impurities. Through this multi-level filtering design, the filtering effect of muddy water can be significantly improved, ensuring that the water quality entering the first drain 8 is cleaner, thereby effectively preventing the drain from being blocked and extending its service life.
[0052] Exemplarily, the filter layer 6 can use bagged gravel with different gap sizes. The primary filter layer can use gravel with larger diameter and larger pores, which is mainly used to intercept larger soil particles and debris; the intermediate filter layer uses medium-sized gravel with relatively small pores to further filter smaller particles; the fine filter layer uses fine gravel with extremely fine pores, which can effectively intercept fine suspended matter and impurities, and after the rainy day is over, the soil intercepted in the gaps of the gravel solidifies, and the solidified soil can fill the gaps between the gravel, which helps to improve the stability between the wall 1 and the slope soil layer.
[0053] In addition, the backfill layer 5 is arranged on the top of the filter layer 6, and the top of the backfill layer 5 and the top of the wall 1 are located on the same end face. The backfill layer 5 fills the gap between the back trough 4 and the road slope. The backfill layer 5 contains clay, which helps to enhance the integrity of the wall 1 and the road slope, and at the same time can prevent soil erosion in the slope soil layer.
[0054] Embodiment 3
[0055] On the basis of the first embodiment, in order to increase the impact force of the liquid in the flushing waterway 7, the present invention also includes a guide member for increasing the flow rate of the liquid. Specifically, the guide member includes a guide plate and a screening layer. The guide plate is fixed on the inner wall of the flushing channel 7, and the guide plate guides the water in the flushing channel 7 into the first drainage channel 8. The screening layer is arranged on the surface of the guide plate; wherein, a plurality of the guide plates are relatively staggered in the length direction of the inner wall of the flushing channel 7.
[0056] In this embodiment, the guide plate can increase the flow rate of the liquid in the flushing waterway 7, thereby increasing the impact force of the flushing liquid on the muddy water in the first drain channel 8. At the same time, the screening layer can intercept impurities in rainwater or muddy water to reduce external impurities from entering and clogging the first drain channel 8.
[0057] In a specific embodiment, since a plurality of guide plates are relatively staggered in the length direction of the inner wall of the flushing channel 7, the liquid in the flushing channel 7 continuously changes direction during the flow, forming a staggered and bent flow pattern. This flow pattern helps to increase the flow velocity and turbulence of the liquid, so that the energy distribution of the liquid in the flushing channel 7 is more uniform, thereby enhancing the impact ability on the mud blocks in the first drainage channel 8.
[0058] Therefore, by setting the guide member, the flow state of the liquid in the flushing channel 7 is further optimized, and the impact ability of the liquid on the mud blocks in the first drainage channel 8 is improved, so as to more effectively prevent the accumulation of mud blocks in the first drainage channel 8, thereby improving the drainage performance and stability of the entire drainage system, and providing a stronger guarantee for the normal operation of the slope protection device for the reconstruction and expansion of the highway.
[0059] In addition, this staggered and curved flow pattern also helps to improve the filtering effect of the screening layer, because the liquid constantly changes direction during the flow process, which can more effectively drive the impurities to contact the screening layer, thereby increasing the probability of impurities being intercepted. At the same time, the staggered and curved flow pattern can also prevent blockage on the surface of the screening layer to a certain extent, ensuring the continuous and stable operation of the drainage system. Through this design, the overall efficiency of the slope protection device is further improved through the cooperation of the screening layer and the guide plate, providing double protection for the safety and stability of the highway.
[0060] Optionally, a screen may be used for the screening layer.
[0061] Furthermore, a grid mesh cover for shielding debris is provided at the top opening of the flushing channel 7, which helps prevent external leaves or large impurities from entering the flushing channel 7, thereby keeping the flushing channel clean and reducing the problem of poor drainage caused by the accumulation of impurities.
[0062] In summary, in combination with Embodiments 1 to 3, the working steps of the slope protection device for highway reconstruction and expansion are as follows:
[0063] First, in rainy weather, muddy water in the slope soil layer enters the scouring channel 7 inside the wall 1 through the wall back 3. The design of the scouring channel 7 allows the muddy water to fall rapidly under the action of gravity, impacting the muddy water in the first drainage channel 8, effectively dispersing the mud blocks and preventing the mud from being stained on the inner wall of the drainage channel.
[0064] Then, the muddy water flows to the drainage wall 12 through the first drainage channel 8, and part of the muddy water passes through the drainage wall 12 into the connecting water channel 9, and then is discharged to the side of the wall breast 2 through the second drainage channel 10. The design of the drainage wall 12 not only slows down the flow rate of the muddy water, but also plays a role in filtering larger soil particles, further preventing the drainage channel from being blocked.
[0065] When the water volume is small, the boss 13 blocks the muddy water flowing along the inner wall of the first drain channel 8, allowing it to enter the second drain channel 10 through the connecting water channel 9 and finally be discharged, thereby avoiding mud accumulation. At the same time, the multi-layer filtration structure (primary, intermediate, and fine filtration layers) performs preliminary filtration on the muddy water, ensuring that the water entering the first drain channel 8 is cleaner.
[0066] The provision of the guide member (including the guide plate and the screening layer) increases the flow rate and turbulence of the liquid in the flushing channel 7, enhances the impact of the liquid on the mud blocks in the first drainage channel 8, and further optimizes the performance of the drainage system.
[0067] Finally, the drainage ditch at the bottom of the wall breast 2 receives the muddy water discharged by the drainage mechanism, ensuring that the muddy water will not form too strong impact force due to the large height difference during the discharge process, reducing splashing. The grid cover blocks external impurities and keeps the flushing channel clean.
[0068] Through the above steps, the slope protection device for the expanded highway effectively solved the problems existing in the traditional retaining wall drainage system and improved the safety and stability of the highway.
[0069] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0070] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A slope protection device for highway reconstruction and expansion, comprising a wall body (1), a wall back (3) is provided on one side of the wall body (1), and the wall back (3) contacts the highway slope, and a wall breast (2) is provided on the side of the wall body (1) away from the wall back (3), and the wall breast (2) faces the highway road surface, characterized in that: A drainage mechanism is provided inside the wall (1); Drainage mechanisms include: A flushing channel (7), wherein the flushing channel (7) is opened at the top of the wall (1), and the flushing channel (7) extends toward the bottom of the wall (1); A first drainage channel (8), wherein both ends of the first drainage channel (8) in the length direction respectively penetrate the wall breast (2) and the wall back (3), and the top of the first drainage channel (8) is connected to the flushing channel (7), and a drainage wall (12) is provided at the bottom of the first drainage channel (8); A connecting water channel (9), wherein the connecting water channel (9) is arranged at the bottom of the first drainage channel (8), and the top of the connecting water channel (9) is connected to the drainage wall (12); A second drainage channel (10), the second drainage channel (10) being arranged at the bottom of the connecting water channel (9), and the two ends of the second drainage channel (10) in the length direction being respectively connected to the wall breast (2) and the connecting water channel (9); A boss (13) is provided at the bottom of the first drainage channel (8) close to the wall breast (2), the drainage wall (12) is provided at the bottom of the first drainage channel (8) close to the wall back (3), and the length of the second drainage channel (10) is less than the width of the wall (1).
2. The slope protection device for highway reconstruction and expansion according to claim 1 is characterized in that: A back groove (4) is provided on the back wall (3). When the back wall (3) contacts the road slope, a cavity is formed between the back groove (4) and the slope. A filter layer (6) is provided in the cavity. The filter layer (6) contacts one end of the first drainage channel (8) passing through the back wall (3). The filter layer (6) filters muddy water flowing from the road slope into the first drainage pipe (8).
3. The slope protection device for highway reconstruction and expansion according to claim 2 is characterized in that: It also comprises a backfill layer (5), which is arranged on the top of the filter layer (6), and the top of the backfill layer (5) and the top of the wall (1) are located on the same end surface, and the gap between the back trough (4) and the road slope is filled by the backfill layer (5).
4. The slope protection device for highway reconstruction and expansion according to claim 1 is characterized in that: The first drainage channel (8) and the second drainage channel (10) are both inclined towards the wall breast (2).
5. The slope protection device for highway reconstruction and expansion according to claim 1 is characterized in that: The drainage wall (12) is located directly below the connection point between the flushing channel (7) and the first drainage channel (8), wherein a plurality of drainage holes are provided on the drainage wall (12), and muddy water in the first drainage channel (8) is guided into the second drainage channel (8) through the drainage holes.
6. The slope protection device for highway reconstruction and expansion according to claim 1 is characterized in that: The flushing channel (7) has a conical structure, and a water guide is provided on the inner wall of the flushing channel (7), wherein the guide is inclined in the direction of the first drainage channel (8).
7. The slope protection device for highway reconstruction and expansion according to claim 6 is characterized in that: The guide member comprises: A guide plate, the guide plate being fixed on the inner wall of the flushing channel (7) and guiding the water in the flushing channel (7) into the first drainage channel (8); A screening layer, the screening layer is arranged on the surface of the guide plate; Wherein, a plurality of the guide plates are relatively staggeredly distributed in the length direction of the inner wall of the flushing channel (7).
8. The slope protection device for highway reconstruction and expansion according to claim 6 is characterized in that: A grid cover for shielding debris is provided at the top opening of the flushing channel (7).
9. The slope protection device for highway reconstruction and expansion according to claim 1 is characterized in that: The wall breast (2) is of an inclined structure, and a block (11) is provided on the top of the wall breast (2), and the block (11) blocks muddy water on the top of the wall body (1).
10. The slope protection device for highway reconstruction and expansion according to claim 9 is characterized in that: The bottom of the wall breast (2) is provided with a drainage ditch for receiving muddy water discharged by the drainage mechanism, wherein: The height difference between one end of the second drainage channel (10) connected to the wall breast (2) and the drainage ditch is no more than 50 centimeters.