Highway high fill roadbed slope and its cavity disease detection device

Abstract

The application discloses a highway high-fill roadbed slope and a cavity disease detection device thereof, which comprises a plurality of support plates arranged equidistantly along a slope surface, two adjacent support plates are arranged close to each other, the lower part of the support plate is provided with an opening for guaranteeing the growth space of the slope plants, and the upper part of the support plate is provided with a drainage mechanism; the drainage mechanism comprises a water storage tank, a bearing plate, a drainage pipe, an adjusting pipe and a closing assembly; the water storage tank is obliquely embedded on the upper part of the support plate, a plurality of discharge ports are formed in the end of the water storage tank close to the opening, and the closing assembly is movably arranged in the water storage tank and can automatically control the opening and closing of the discharge ports according to the water level change in the water storage tank; the rainstorm erosion and loss are prevented through the cooperation of the support plate and the drainage mechanism, the soil is supplemented in light rain to prevent dry cracking, the ecological slope is compatible, the structural stability is improved, the cavity disease detection device with full-range adjustment is matched to accurately check the pipeline and the roadbed cavity, and the long-term safety and stability of the slope are comprehensively guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slope protection, in particular to a high embankment roadbed slope of a highway and a cavity disease detection device thereof. BACKGROUND

[0002] In the construction of a highway, the high embankment roadbed slope has a large filling height, a high self-weight load of the soil body, and is exposed to the natural environment for a long time. Its water and soil conservation, structural stability, and whole-cycle disease prevention and control become the core problems of the project. The current protection structure of the high embankment roadbed slope focuses on a single function, and it is difficult to meet the dual needs of "rainstorm prevention and erosion" and "rainy day water and soil replenishment":

[0003] In the traditional support plate protection scheme, some designs only realize rapid drainage by opening drainage holes. Although it can reduce the water accumulation during heavy rain, the rainwater is quickly lost through the drainage holes in a rainy day, and the shallow soil moisture of the slope cannot be replenished, resulting in a long-term dry state of the soil body, which is prone to dry shrinkage cracks. The continuous development of the cracks will form a rainwater infiltration channel, intensify the saturation of the deep soil body, and increase the risk of landslides.

[0004] Another type of protection structure is to improve the water retention of the soil by using densely arranged support plates or reducing the drainage channels. Although it can retain water in a rainy day, the rainwater on the slope surface cannot be quickly drained during heavy rain, resulting in a sharp increase in the water content of the shallow soil and breaking through the saturation threshold. The friction between the soil particles decreases sharply, the shear strength is insufficient, and shallow collapse or overall landslide is easily caused. In addition, the lateral pressure of the accumulated water on the support plate will cause the plate to tilt and displace, further damaging the protection system.

[0005] At the same time, the cavity disease of the high embankment roadbed slope is often caused by insufficient construction compaction, rainwater erosion of the soil body, or pipeline leakage. If it is not detected and repaired in time, it will lead to the failure of the drainage system and the settlement of the roadbed. Some vehicle-mounted detection devices on the market are equipped with a geological radar module, but the adjustment function is single, and only angle adjustment or height adjustment in a single direction can be realized. It cannot be flexibly adapted to different detection targets (pipelines and different depths of roadbeds), resulting in incomplete coverage of the radar signal and low detection accuracy. SUMMARY

[0006] The purpose of the present application is to provide a high embankment roadbed slope of a highway and a cavity disease detection device thereof to solve the problems raised in the background art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a highway high fill roadbed slope, comprising a plurality of support plates arranged equidistantly along the slope surface, two adjacent support plates are arranged close to each other, the lower part of the support plate is provided with a through opening for ensuring the growth space of the slope plant, and the upper part of the support plate is provided with a drainage mechanism; the drainage mechanism comprises a water storage tank, a bearing plate, a drainage pipe, an adjusting pipe and a closing assembly; the water storage tank is obliquely embedded in the upper part of the support plate, a plurality of discharge openings are formed in one end of the water storage tank close to the through opening, and the closing assembly is movably arranged in the water storage tank and can automatically control the opening and closing of the discharge opening according to the water level change in the water storage tank.

[0008] The bearing plate is slidably assembled in the water storage tank, a plurality of springs are connected between the bearing plate and the bottom of the water storage tank, the side edge of the bearing plate is attached to the inner wall of the water storage tank, the drainage pipe is connected with the bottom of the water storage tank, and the other end of the drainage pipe extends to communicate with the underground discharge main pipe, the adjusting pipe is slidably embedded in the drainage pipe, and the upper end of the adjusting pipe extends to penetrate the middle part of the bearing plate, a plurality of water seepage holes are formed in the outer circumferential surface of the upper part of the drainage pipe, when the water amount in the water storage tank reaches a preset threshold value, the water body gravity presses the bearing plate, drives the adjusting pipe to move downward synchronously, and gradually blocks the water seepage holes, so that the water body can only flow directly into the underground discharge main pipe.

[0009] Further, the closing assembly comprises a buoyancy plate, a baffle and a connecting frame, a sliding rod is arranged in the water storage tank, the buoyancy plate is slidably assembled on the sliding rod, a sliding groove is formed in one end of the water storage tank close to the through opening, the baffle is slidably assembled in the sliding groove, and the discharge opening is blocked when the baffle is at the lowermost part of the sliding groove, and the upper ends of the buoyancy plate and the baffle are connected through the connecting frame to move synchronously.

[0010] Further, the front end of the baffle is provided with a connecting seat, a connecting block is hingedly arranged on the connecting seat, a gear is sleeved on the end of the rotating shaft of the connecting block, and a corresponding rack is arranged on the front end surface of the water storage tank; a cover plate is arranged on the connecting block, when the baffle moves upward, the gear rolls along the rack, drives the connecting block to rotate, and makes the cover plate flip from the vertical state to the horizontal state.

[0011] Further, the front end of the connecting block is provided with a sliding plate, the rear end surface of the cover plate is provided with a clamping groove, the sliding plate is slidably connected with the clamping groove, the front end of the water storage tank is provided with arc-shaped guide frames on the left and right sides, and the both ends of the cover plate are provided with guide pieces which are slidably connected with the arc-shaped guide frames.

[0012] Furthermore, drainage channels are provided on both the left and right sides of the top of the baffle plate, and guide channels are provided on both sides of the middle of the baffle plate. One end of the guide channel is connected to the drainage channel on the same side and extends to the corresponding discharge port position. A seepage section is provided in the middle of the drainage channel. The seepage section has a semi-elliptical structure, and several seepage ports are provided at equal intervals on its upper part. The seepage ports are at a certain distance from the bottom of the drainage channel.

[0013] Furthermore, the drainage channel is provided with several anchoring holes, and a downwardly extending fixing rod is installed in the anchoring holes.

[0014] The present invention also provides a cavity defect detection device, applied to the above-mentioned high embankment roadbed slope of highway, including a vehicle-mounted support, a support base is provided on the side end of the vehicle-mounted support, a support arm is rotatably mounted on the support base, and a first motor for driving the support arm to rotate vertically is provided on the support base. An installation arm is rotatably mounted on the other end of the support arm, and a second motor for driving the installation arm to rotate horizontally is provided on the support arm. A ground-penetrating radar module group is assembled on the installation arm for scanning the preset path of the drainage pipe and the underground main discharge pipe before and after construction.

[0015] Furthermore, guide rods are provided on both sides of the top of the vehicle-mounted support, and the support seat is slidably mounted on the guide rods. A telescopic cylinder is provided on the vehicle-mounted support, and the piston rod of the telescopic cylinder is connected to the support seat to drive it to perform lifting and lowering movements.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention achieves bidirectional optimization of slope water and soil protection through the coordinated design of the support plate and drainage mechanism. During heavy rain, the support plate physically blocks rainwater from eroding the surface soil, while the drainage channel and guide channel quickly collect water and direct it to the discharge outlet. After the water level in the storage tank reaches the threshold, the regulating pipe blocks the seepage holes, and the water is quickly discharged through the underground main discharge pipe, avoiding landslides caused by shallow soil saturation and instability. During light rain, the seepage holes of the drainage pipe and the opening of the support plate form a "dual water replenishment channel," which, together with the seepage part of the drainage channel, slowly replenishes water and prevents the soil from drying and cracking. This not only solves the pain points of traditional slopes, such as "water loss during heavy rain and cracking during light rain," but also maintains the integrity and stability of the soil.

[0018] The closure assembly automatically controls the opening and closing of the discharge outlet via a buoyancy plate based on the water level. During light rain, the discharge outlet is closed to ensure water replenishment, while during heavy rain, it is opened to assist drainage, requiring no manual intervention. The cover plate adopts a composite motion of "flipping + horizontal movement." Under the constraint of the arc-shaped guide frame, it first flips at the front of the water storage tank (avoiding the vertical space of plants) and then moves horizontally to cover the opening. This not only prevents heavy rain from impacting the soil at the opening but also prevents tall plants from obstructing the movement of the cover plate or causing damage, achieving synergistic compatibility between "structural protection" and "biological slope stabilization." At the same time, the design of the sliding plate and guide components ensures that the structure operates without jamming, improving long-term reliability.

[0019] The cavity detection device uses a telescopic cylinder to adjust the height and dual motors to control the support arm and installation arm angle, enabling the ground radar module group to achieve full-range coverage detection of drainage pipes, underground main drainage pipes, and the roadbed. Before and after construction or during regular maintenance, it can scan the area around the pipeline and the entire roadbed in different regions, compare the images with the baseline image to accurately locate cavities, and repair them in a timely manner through grouting, reinforcement, and other measures. This not only prevents drainage failure caused by cavities around the pipeline, but also prevents structural collapse caused by cavities inside the roadbed, providing dual protection for the safety of the roadbed slope and drainage system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the support baffle structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the support baffle of the present invention under heavy rain conditions;

[0022] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0023] Figure 4 A schematic diagram of the slope layout for the retaining wall;

[0024] Figure 5 for Figure 4 Enlarged view of a section at point B in the middle;

[0025] Figure 6 This is a partial schematic diagram of the drainage channel of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a cavity disease detection device;

[0027] Figure 8 This is a schematic diagram showing the working status of the cavity detection device.

[0028] In the diagram, the components are: baffle plate-1, opening-2, water tank-3, load-bearing plate-4, drain pipe-5, regulating pipe-6, discharge port-7, spring-8, main discharge pipe-9, seepage hole-10, buoyancy plate-11, baffle plate-12, connecting frame-13, slide rod-14, connecting seat-15, connecting block-16, gear-17, rack-18, cover plate-19, sliding plate-20, slot-21, arc-shaped guide frame-22, guide component-23, drain channel-24, guide channel-25, seepage part-26, seepage port-27, anchor hole-28, fixing rod-29, vehicle-mounted support-30, support seat-31, support arm-32, first motor-33, mounting arm-34, second motor-35, ground-penetrating radar module group-36, and guide rod-37. Detailed Implementation

[0029] 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.

[0030] like Figures 1 to 8 As shown, a high embankment slope for a highway includes several baffles 1 equidistantly arranged along the slope surface. Two adjacent baffles 1 are arranged close to each other. The lower part of the baffle 1 has an opening 2 to ensure the growth space for vegetation on the slope. The upper part of the baffle 1 is provided with a drainage mechanism. The drainage mechanism includes a water storage tank 3, a load-bearing plate 4, a drainage pipe 5, a regulating pipe 6, and a closing component. The water storage tank 3 is inclined and embedded in the upper part of the baffle 1. Several discharge ports 7 are opened at the end of the water storage tank 3 near the opening 2. The closing component is movably arranged in the water storage tank 3 and can automatically control the opening and closing of the discharge ports 7 according to the water level changes in the water storage tank 3.

[0031] The baffles 1, evenly spaced along the slope, directly resist the scouring force of heavy rain on the surface soil through physical blocking, preventing soil from being carried away by rainwater and reducing soil erosion at the source. At the same time, the arrangement of the baffles 1 can disperse the flow path of rainwater on the slope, reduce the intensity of local water scouring, and further protect the soil structure of the slope. The openings 2 at the bottom of the baffles 1 not only provide growth space for the roots of slope plants (roots assist in soil stabilization), but also, in conjunction with the seepage structure of the drainage mechanism, allow water to infiltrate into the surface and shallow soil layers during light rain, replenishing soil moisture. This prevents the soil from drying and cracking due to prolonged drought, maintains soil integrity, and prevents cracks from developing and causing a decrease in slope stability.

[0032] The load-bearing plate 4 is slidably assembled inside the water storage tank 3. Several springs 8 are connected to the bottom of the load-bearing plate 4 and the bottom of the water storage tank 3, and its side is in contact with the inner wall of the water storage tank 3. The drain pipe 5 is connected to the bottom of the water storage tank 3, and the other end of the drain pipe 5 extends to connect with the underground discharge main pipe 9. The regulating pipe 6 is slidably embedded in the drain pipe 5, and its upper end extends to connect with the middle of the load-bearing plate. Several seepage holes 10 are opened on the upper outer circumference of the drain pipe 5. When the water volume in the water storage tank 3 reaches the preset threshold, the weight of the water presses down on the load-bearing plate 4, causing the regulating pipe 6 to move down synchronously, gradually blocking the seepage holes 10, so that the water can only flow directly into the underground discharge main pipe 9.

[0033] During light rain, the water storage tank 3 is tilted and embedded to collect rainwater from the slope. When the water volume is small, the water is slowly discharged through the drain pipe 5. At the same time, the seepage hole 10 at the top of the drain pipe 5 allows some water to seep into the shallow soil of the slope, forming a "double water replenishment channel" with the opening 2 of the support plate 1. This ensures that the rainwater fully replenishes the soil and prevents the soil from shrinking and cracking under long-term dry conditions, thus avoiding the formation of through cracks.

[0034] When encountering heavy rain, the large amount of rainfall causes the rate at which water drains from the storage tank 3 to be less than the rate at which rainwater enters. When the water level in the storage tank 3 reaches a preset threshold, the weight of the water will overcome the elastic force of the spring 8 and press down on the load-bearing plate 4, causing the regulating pipe 6 to move down simultaneously and block the seepage hole 10. This prevents the water flowing into the drainage pipe 5 from draining into the shallow soil through the seepage hole 10, thus avoiding a large amount of water continuously seeping into the shallow soil during heavy rain. This would prevent the soil moisture content from rapidly exceeding the saturation threshold. Once saturated, the pores between the shallow soil particles are filled with water, significantly reducing the friction between particles and greatly decreasing the shear strength. This makes the soil unable to withstand the lateral pressure of the upper soil, easily leading to shallow landslides or collapses and damaging the overall slope structure. At this time, all the water is quickly discharged through the drainage pipe 5 and the underground discharge main pipe 9, reducing the time that rainwater stays on the slope and preventing excessive lateral pressure from rainwater accumulation on the support plate 1, thus minimizing the risk of soil erosion and loss due to heavy rain.

[0035] In this embodiment, the closing assembly includes a buoyancy plate 11, a baffle 12, and a connecting frame 13. A sliding rod 14 is provided inside the water storage tank 3. The buoyancy plate 11 is slidably mounted on the sliding rod 14. A groove is provided at one end of the water storage tank 3 near the opening 2. The baffle 12 is slidably mounted in the groove, and when the baffle 12 is at the bottom of the groove, it blocks the discharge port 7. The upper ends of the buoyancy plate 11 and the baffle 12 are connected by the connecting frame 13 to move synchronously. When the water level in the water storage tank 3 is low (in a light rain scenario), the buoyancy plate 11 slides down the sliding rod 14, and the connecting frame 13 drives the baffle 12 to block the discharge port 7. This prevents a small amount of replenishing water from being lost through the discharge port 7, ensuring that the water can infiltrate into the soil through the seepage holes 10, fully replenishing the moisture and preventing the soil from drying out.

[0036] When the water level rises to the threshold (rainstorm scenario), the buoyancy is greater than the gravity, causing the buoyancy plate 11 to move upward, which drives the baffle 12 to open the discharge port 7; excess water in the water storage tank 3 is quickly discharged through the discharge port 7, reducing the amount of water stored in the water storage tank 3, preventing excessive water from overflowing from the side, and working together with the drain pipe 5 to quickly drain water.

[0037] In this embodiment, a connecting seat 15 is provided at the front end of the baffle 12, a connecting block 16 is hinged on the connecting seat 15, and a gear 17 is sleeved at the end of its rotating shaft. A corresponding rack 18 is provided on the front end face of the water storage tank 3. A cover plate 19 is provided on the connecting block 16.

[0038] When the baffle 12 moves upward with the buoyancy plate 11 (in a rainstorm scenario), the gear 17 rolls along the rack 18, causing the connecting block 16 to rotate, so that the cover plate 19 flips from a vertical state to a horizontal state; the horizontal cover plate 19 can cover the opening 2 at the bottom of the support baffle 1, preventing a large amount of rainwater from directly impacting the plant roots and soil at the opening 2 during rainstorms, thus avoiding soil erosion.

[0039] In this embodiment, the front end of the connecting block 16 is provided with a sliding plate 20, the rear end face of the cover plate 19 is provided with a slot 21, the sliding plate 20 is slidably connected to the slot 21, the front left and right sides of the water tank 3 are provided with arc-shaped guide frames 22, and the two ends of the cover plate 19 are provided with guide members 23, which are slidably engaged with the arc-shaped guide frames 22.

[0040] When the cover plate 19 is flipped to a near-horizontal state, as the baffle 12 continues to move upward, the guide 23 will gradually enter the horizontal section of the arc-shaped guide frame 22 and move outward along the horizontal trajectory (away from the water tank 3 and towards the opening 2), driving the cover plate 19 to achieve horizontal displacement simultaneously. Finally, under the synergistic effect of "flipping to a horizontal position + moving outward horizontally", the cover plate 19 moves precisely to directly above the opening 2, forming a complete cover. The advantage of the two-stage movement is that the cover plate 19 completes the posture transformation at the front end of the water tank 3, away from the plants at the opening 2, and the flipping trajectory completely avoids the vertical growth space of the plants (such as plant stems and canopies), avoiding collisions or squeezing with taller plants during the flipping process, preventing damage to the plants or the cover plate 19 from being stuck. In the second step of the horizontal movement stage, the cover plate 19 is already in a horizontal position, and only needs to move horizontally to cover the opening 2, without having to cross the vertical height of the plants. Even if the plants at the opening 2 are tall (such as shrubs and herbaceous plants with good root soil fixation), the horizontal movement will not be blocked by the plants, and it can finally accurately reach directly above the opening 2.

[0041] In this embodiment, drainage channels 24 are provided on both the left and right sides of the top of the support plate 1, and guide channels 25 are provided on both sides of the middle of the support plate 1. One end of the guide channel 25 is connected to the drainage channel 24 on the same side and extends to the corresponding discharge port 7. A seepage section 26 is provided in the middle of the drainage channel 24. The seepage section 26 has a semi-elliptical structure and several seepage ports 27 are provided at equal intervals on its upper part. There is a certain distance between the seepage port 27 and the bottom of the drainage channel. Several anchoring holes 28 are provided on the drainage channel 24. A downwardly extending fixing rod 29 is installed in the anchoring hole 28. The fixing rod 29 is inserted into the deep soil of the slope. Through the friction and interlocking force between the fixing rod 29 and the deep soil, the rainstorm scouring force and soil lateral pressure borne by the support plate 1 are transmitted to the deep stable soil. This prevents the support plate 1 from tilting or displacing under the impact of rainstorm.

[0042] The drainage channel 24 at the top of the baffle plate 1 collects rainwater from the top of the slope, and the guide channels 25 on both sides of the middle section accurately transport the rainwater in the drainage channel 24 to the discharge outlet 7; this prevents rainwater from flowing randomly on the slope and forming "scour runoff", reducing the direct scouring of the slope soil by rainwater, and working together with the physical barrier of the baffle plate 1 to reduce soil erosion; the semi-elliptical seepage section 26 in the middle of the drainage channel has a seepage outlet 27 (with a very small aperture) at the top. When the water flowing in the drainage channel flows, a small amount of water will flow into the surface layer of the slope soil through the seepage outlet 27, forming a "three-dimensional water replenishment network" together with the opening 2 of the baffle plate 1 and the seepage holes 10 of the drainage pipe 5, which fully replenishes the soil moisture and prevents the soil from drying and cracking.

[0043] This embodiment also provides a cavity detection device, including a vehicle-mounted support 30. Guide rods 37 are provided on both sides of the top of the vehicle-mounted support 30. A support seat 31 is slidably mounted on the guide rods 37. A telescopic cylinder is provided on the vehicle-mounted support 30. The piston rod of the telescopic cylinder is connected to the support seat 31 to drive it to move up and down. A support arm 32 is rotatably mounted on the support seat 31. A first motor 33 is provided on the support seat 31 to drive the support arm 32 to rotate in the vertical direction. An installation arm 34 is rotatably mounted on the other end of the support arm 32. A second motor 35 is provided on the support arm 32 to drive the installation arm 34 to rotate in the horizontal direction. A ground-penetrating radar module group 36 is mounted on the installation arm 34 to scan the preset path of the drainage pipe 5 and the underground discharge main pipe 9 before and after construction. Guide rods 37 are provided on both sides of the top of the vehicle support 30. The support seat 31 is slidably mounted on the guide rods 37. A telescopic cylinder is provided on the vehicle support 30. The piston rod of the telescopic cylinder is connected to the support seat 31 to drive it to move up and down.

[0044] On the support base 31 at the side end of the vehicle-mounted support 30, the first motor 33 drives the support arm 32 to rotate in the vertical direction, which can adjust the pitch angle of the support arm 32; the second motor 35 on the support arm 32 drives the mounting arm 34 to rotate in the horizontal direction, which can adjust the horizontal rotation angle of the mounting arm 34; through the coordinated control of the first motor 33 and the second motor 35, the ground radar module group 36 on the mounting arm 34 can be adjusted to any preset angle to ensure that the radar signal can cover the preset path of the drain pipe 5 and the underground discharge main pipe 9.

[0045] The guide rods 37 on both sides of the top of the vehicle-mounted support 30 provide sliding guidance for the support seat 31. The piston rod of the telescopic cylinder on the vehicle-mounted support 30 is connected to the support seat 31. When it is necessary to adjust the detection height, the piston rod of the telescopic cylinder extends or retracts, causing the support seat 31 to slide up and down along the guide rods 37. The lifting and lowering of the support seat 31 synchronously drives the support arm 32, the mounting arm 34 and the ground radar module group 36 to lift and lower, which can adapt to the roadbed detection needs at different heights, ensure that the ground radar module group 36 maintains the best detection distance with the detection target, and improve the detection accuracy.

[0046] The working steps of the device are as follows: Before or after construction or during regular maintenance, the vehicle-mounted support 30 is installed on the engineering vehicle and moved with the vehicle to the testing section. The testing mode is set according to the testing target (drainage pipe 5 / underground discharge main pipe 9 / roadbed).

[0047] Regional detection:

[0048] ① Inspection of drainage pipe 5 and underground main drainage pipe 9: Adjust the height of the telescopic cylinder, the first motor 33 (support arm 32 pitch) and the second motor 35 (installation arm 34 rotates horizontally) to make the radar module group 36 align with the preset path of the pipeline and scan whether there are cavities in the soil around the pipeline;

[0049] ② Roadbed void detection: Adjust the support arm 32 to cover the top surface of the roadbed, the slope filling layer, the junction of the roadbed and the base layer, etc., raise and lower the support base 31 to the appropriate height, and the radar module group 36 emits electromagnetic waves to the entire roadbed area to capture the reflected wave signals of the voids inside the roadbed;

[0050] Data comparison and hazard assessment: The scanned image data of the relevant area of ​​drainage pipe 5 and the entire roadbed are compared with the baseline image and design parameters (such as the radar wave characteristics corresponding to the roadbed compaction) before construction. If abnormal reflection areas are found, the voids around drainage pipe 5 or the voids inside the roadbed can be accurately located, and a repair plan (such as roadbed grouting and filling, drainage pipe 5 reinforcement, etc.) can be formulated in a timely manner to ensure the dual safety and stability of the roadbed structure and drainage system.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A slope for a high embankment subgrade of a highway, characterized in that: The system includes several support plates evenly spaced along the slope, with adjacent support plates positioned close to each other. Each support plate has an opening at its lower part to ensure sufficient space for the growth of vegetation on the slope. The upper part of each support plate is equipped with a drainage mechanism, which includes a water tank, a load-bearing plate, a drainage pipe, a regulating pipe, and a closing assembly. The water tank is inclined and embedded in the upper part of the support plate. Several discharge ports are located at the end of the water tank near the opening. The closing assembly is movably disposed within the water tank and can automatically control the opening and closing of the discharge ports according to changes in the water level within the tank. The load-bearing plate is slidably assembled inside the water storage tank. Several springs connect the load-bearing plate to the bottom of the water storage tank, and its side is in contact with the inner wall of the water storage tank. The drain pipe is connected to the bottom of the water storage tank, and the other end of the drain pipe extends to connect with the underground main discharge pipe. The regulating pipe is slidably embedded in the drain pipe, and its upper end extends to connect with the middle of the load-bearing plate. Several seepage holes are opened on the upper outer circumference of the drain pipe. When the water volume in the water storage tank reaches a preset threshold, the weight of the water presses down on the load-bearing plate, causing the regulating pipe to move down synchronously, gradually blocking the seepage holes, so that the water can only flow directly into the underground main discharge pipe.

2. The high embankment slope of a highway as described in claim 1, characterized in that: The closing assembly includes a buoyancy plate, a baffle, and a connecting frame. A sliding rod is provided inside the water storage tank. The buoyancy plate is slidably mounted on the sliding rod. A groove is provided at one end of the water storage tank near the outlet. The baffle is slidably mounted in the groove, and when the baffle is at the bottom of the groove, it blocks the outlet. The upper ends of the buoyancy plate and the baffle are connected by the connecting frame to move synchronously.

3. A highway high embankment slope according to claim 2, characterized in that: The front end of the baffle is provided with a connecting seat, and a connecting block is hinged on the connecting seat. A gear is sleeved on the end of the rotating shaft of the connecting block. A corresponding rack is provided on the front end face of the water storage tank. A cover plate is provided on the connecting block. When the baffle moves up, the gear rolls along the rack, driving the connecting block to rotate, so that the cover plate flips from a vertical state to a horizontal state.

4. A highway high embankment slope according to claim 3, characterized in that: The front end of the connecting block is provided with a sliding plate, and the rear end face of the cover plate is provided with a slot. The sliding plate is slidably connected to the slot. The front left and right sides of the water storage tank are provided with arc-shaped guide frames, and the two ends of the cover plate are provided with guide members, which are slidably engaged with the arc-shaped guide frames.

5. A highway high embankment slope according to claim 1, characterized in that: The top left and right sides of the support plate are provided with drainage channels, and the middle two sides of the support plate are provided with guide channels. One end of the guide channel is connected to the drainage channel on the same side and extends to the corresponding discharge port. The middle of the drainage channel is provided with a seepage section. The seepage section has a semi-elliptical structure and several seepage ports are equidistantly provided on its upper part. The seepage ports are at a certain distance from the bottom of the drainage channel.

6. A highway high embankment slope according to claim 5, characterized in that: The drainage channel has several anchoring holes, and a downward-extending fixing rod is installed in each anchoring hole.

7. A cavity defect detection device, applied to the high embankment slope of a highway as described in claim 1, characterized in that: The system includes a vehicle-mounted support, a support base at one side of the vehicle-mounted support, a support arm rotatably mounted on the support base, and a first motor mounted on the support base for driving the support arm to rotate vertically. An installation arm is rotatably mounted on the other end of the support arm, and a second motor mounted on the support arm for driving the installation arm to rotate horizontally. A ground-penetrating radar module is mounted on the installation arm for scanning the pre-set path of the drainage pipe and the underground main discharge pipe before and after construction.

8. The cavity detection device according to claim 7, characterized in that: Guide rods are provided on both sides of the top of the vehicle-mounted support. The support seat is slidably mounted on the guide rods. A telescopic cylinder is provided on the vehicle-mounted support. The piston rod of the telescopic cylinder is connected to the support seat to drive it to move up and down.

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