Anti-settlement highway subgrade
The anti-settling highway roadbed addresses subgrade settlement by using obliquely arranged reinforcing rods and drainage systems to manage water ingress and distribute loads, enhancing stability and reducing settlement risks.
Patent Information
- Application Number
- CN202411531788.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-01-03
AI Technical Summary
Subgrade settlement, which is the vertical downward deformation of roadbeds due to their own weight and external loads, poses a common problem in road engineering, leading to road damage and safety hazards, especially in soft foundations and under heavy traffic conditions.
An anti-settling highway roadbed design featuring a pile foundation with obliquely arranged reinforcing rods that slide into the soil layer, supported by a driving member, and includes seepage holes and drainage components to manage water ingress and egress, enhancing the stability and durability of the roadbed.
The design reduces the sinking tendency of pile foundations and roadbeds by distributing loads effectively and managing water penetration, thereby improving the stability and reducing the risk of settlement.
Smart Images
Figure CN119243537A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of roadbed, and in particular to an anti-settling highway roadbed. Background Art
[0002] "Roadbed" is an important term in road engineering. It refers to the strip structure built as the foundation of the road surface according to the route location and certain technical requirements. It is the foundation of railways and highways. It bears the load transmitted from the road surface and should have sufficient strength, stability and durability. The form of roadbed is generally divided into three forms: embankment, cutting and semi-filled and semi-excavated roadbed. In engineering, in order to ensure the stability of the roadbed, it needs to be compacted, protected, drained and other treatments to ensure that it can meet the performance and safety requirements of the design.
[0003] "Subgrade settlement" refers to the vertical downward deformation of the subgrade under the influence of its own weight, external loads and environmental factors. Subgrade settlement is one of the common problems in road engineering. Excessive settlement may cause road damage, driving discomfort and safety hazards. The main causes of subgrade settlement include geological conditions, fill height, load, construction methods and environmental factors. For example, the subgrade on a soft foundation is more prone to settlement. The greater the fill height, the greater the subgrade settlement. In addition, under the influence of long-term heavy traffic, the subgrade will gradually settle.
[0004] However, in order to improve the anti-settlement ability of the roadbed, pile foundations are usually constructed at the designed location to increase the bearing capacity of the roadbed. However, when the geological conditions are average, the load of the roadbed is transferred to the pile foundation, which will cause the pile foundation to sink and thus cause the roadbed to sink. Summary of the invention
[0005] In order to improve the bearing capacity of the roadbed, the present application provides an anti-settling highway roadbed.
[0006] The anti-settling highway roadbed provided in this application adopts the following technical solution: A subsidence prevention highway roadbed comprises a pile foundation and a roadbed arranged on the pile foundation, wherein a plurality of reinforcing rods are slidably arranged in the pile foundation, the reinforcing rods are arranged along the circumference and length directions of the pile foundation, the reinforcing rods are arranged obliquely downward in the pile foundation, and an acute angle is formed between the reinforcing rods and the axis of the pile foundation, and further comprises a driving member for driving the reinforcing rods to slide out and enter a soil layer; the pile foundation and the reinforcing rods are both hollow, and a plurality of seepage holes are opened in the circumference of the reinforcing rods, and the seepage water in the soil layer penetrates into the reinforcing rods through the seepage holes and penetrates into the pile foundation along the reinforcing rods, and further comprises a drainage member for discharging the seepage water in the pile foundation.
[0007] Optionally, the driving member includes a driving rod inserted in the pile foundation, the end of the reinforcement rod located in the pile foundation is initially located on the axis of the pile foundation, the end of the reinforcement rod located at the axis of the pile foundation is arc-shaped, and the end of the driving rod is conical. After the driving rod enters the pile foundation, the end of the driving rod abuts against the end of the driving rod to drive the reinforcement rod to move out of the pile foundation and enter the soil layer.
[0008] Optionally, a water inlet gap is opened in the pile foundation, and the water inlet gap is connected to the inner cavity of the pile foundation. The through hole in the pile foundation for the reinforcement rod to slide is connected to the water inlet gap. The water inlet gap is opened horizontally, and the seepage hole section on the reinforcement rod is connected to the water inlet gap. The infiltrated water in the soil layer in the reinforcement rod is discharged through the seepage hole, enters the water inlet gap, and enters the pile foundation.
[0009] Optionally, the driving rod is hollow, and a plurality of water inlet holes are evenly opened in the circumference and length directions of the driving rod, the water inlet holes are connected to the inside of the driving rod, and the seepage water in the pile foundation enters the driving rod through the water inlet holes. The drainage component includes a drainage pipe and a pumping component, the drainage pipe is buried in the roadbed and connects the driving rods in all the pile foundations, the pumping component is located outside the roadbed, and the pumping component is used to extract the seepage water in the driving rod and discharge it through the drainage pipe.
[0010] Optionally, the cross-section of the reinforcement rod is circular or rectangular, and the end of the reinforcement rod outside the pile foundation is pointed.
[0011] Optionally, a water-blocking plate is provided in the roadbed, and the water-blocking plate is located above the pile foundation. The water-blocking plate is hollow and has a plurality of support columns arranged inside, and the support columns are used to support the top of the inner cavity of the water-blocking plate.
[0012] Optionally, a plurality of filter holes are provided on the top of the baffle plate, and rainwater in the roadbed enters the inner cavity of the baffle plate through the filter holes. A delivery pipe is provided at the bottom of the baffle plate, and the delivery pipe is used to connect with a drainage pipe.
[0013] Optionally, filter material is filled on the baffle and in the filter holes, and the filter material is used to filter soil in rainwater entering the baffle; a scraper is provided at the bottom of the inner cavity of the baffle, and the scraper is used to act on the soil in the connecting section between the conveying pipe and the baffle to drive the soil out of the connecting section.
[0014] Optionally, the scraper includes a scraper plate rotatably arranged in the water-blocking plate and a waterproof motor, the waterproof motor is fixedly arranged on the top of the inner cavity of the water-blocking plate and the output shaft of the waterproof motor is perpendicular to the water-blocking plate, the scraper plate is fixedly arranged on the output shaft of the waterproof motor, and a spiral rod is arranged at the bottom of the scraper plate, and one end of the spiral rod enters into the conveying pipe.
[0015] Optionally, a boss is provided at the bottom of the inner cavity of the water baffle, the top surface of the boss is higher than the bottom of the inner cavity of the water baffle, and the delivery pipe enters the water baffle from the boss.
[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the pile foundation construction is completed, the reinforcing rod is driven to slide out of the pile foundation through the driving member, and the end of the reinforcing rod enters the soil layer, and the other end of the reinforcing rod is located in the pile foundation, so that the reinforcing rod supports the pile foundation, and reduces the possibility of the pile foundation sinking due to the pile foundation load or geological conditions, thereby reducing the possibility of roadbed settlement; when the roadbed load is large, the load is transferred to the pile foundation, and the pile foundation has a tendency to sink. At this time, under the action of the reinforcing rod, the reinforcing rod supports the pile foundation, and under the action of the soil between the reinforcing rod and the pile foundation, the sinking tendency of the pile foundation is resisted, thereby reducing the possibility of pile foundation sinking and further reducing the sinking tendency of the roadbed; and when the pile foundation sinks, the soil between the reinforcing rod and the pile foundation is compressed, which increases the difficulty of sinking the pile foundation, further improving the stability of the pile foundation.
[0017] 2. When water seeps into the roadbed, it penetrates into the soil layer and approaches the reinforcement rod, which can easily cause the soil near the reinforcement rod to become loose. At this time, the water near the reinforcement rod enters the reinforcement rod through the seepage hole, and penetrates into the pile foundation along the soil in the reinforcement rod, and is then discharged from the pile foundation through the drainage piece, further reducing the possibility of pile foundation sinking. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the overall structure of an anti-settling highway roadbed according to an embodiment of the present application; Figure 2 It is a cross-sectional view of a pile foundation and a water barrier in an anti-settling highway roadbed according to an embodiment of the present application; Figure 3 It is a cross-sectional view of a conveying pipe in an anti-subsidence highway roadbed according to an embodiment of the present application.
[0019] Explanation of the accompanying reference numerals: 1. Pile foundation; 2. Roadbed; 3. Reinforcement rod; 4. Driving rod; 5. Seepage hole; 6. Drainage member; 61. Drain pipe; 62. Pumping member; 7. Water inlet gap; 8. Water inlet hole; 9. Water-blocking plate; 11. Filter hole; 12. Delivery pipe; 13. Scraper; 14. Waterproof motor; 15. Screw rod; 16. Boss. DETAILED DESCRIPTION
[0020] The following is combined with Figure 1-3 This application is described in further detail.
[0021] The present application embodiment discloses an anti-settling highway roadbed. Figure 1 and Figure 2The anti-subsidence highway roadbed includes a pile foundation 1 and a roadbed 2 arranged on the pile foundation 1. A plurality of reinforcing rods 3 are slidably arranged in the pile foundation 1. The reinforcing rods 3 are arranged along the circumference and length directions of the pile foundation 1. The reinforcing rods 3 are obliquely arranged downward in the pile foundation 1. There is an acute angle between the reinforcing rods 3 and the axis of the pile foundation 1. A driving member is also included for driving the reinforcing rods 3 to slide out and enter the soil layer.
[0022] After the construction of the pile foundation 1 is completed, the reinforcing rod 3 is driven to slide out of the pile foundation 1 by the driving member, and the end of the reinforcing rod 3 enters the soil layer, and the other end of the reinforcing rod 3 is located in the pile foundation 1, so that the reinforcing rod 3 supports the pile foundation 1, and reduces the possibility of the pile foundation 1 sinking due to load or geological conditions, thereby reducing the possibility of the roadbed 2 sinking; when the roadbed 2 is loaded with a large load, the load is transferred to the pile foundation 1, and the pile foundation 1 has a tendency to sink. At this time, under the action of the reinforcing rod 3, the reinforcing rod 3 supports the pile foundation 1, and under the action of the soil between the reinforcing rod 3 and the pile foundation 1, the sinking tendency of the pile foundation 1 is resisted, thereby reducing the possibility of the pile foundation 1 sinking, and further reducing the sinking tendency of the roadbed 2; and when the pile foundation 1 sinks, the soil between the reinforcing rod 3 and the pile foundation 1 is compressed, which increases the difficulty of the pile foundation 1 sinking, further improving the stability of the pile foundation 1.
[0023] Reference Figure 1 and Figure 2 In the embodiment of the present application, the driving member includes a driving rod 4 inserted in the pile foundation 1. The driving rod 4 is cylindrical and slides vertically in the pile foundation 1. The initial position of the end of the reinforcement rod 3 located in the pile foundation 1 is on the axis of the pile foundation 1. The end of the reinforcement rod 3 located at the axis of the pile foundation 1 is arc-shaped, and the end of the driving rod 4 is conical. After the driving rod 4 enters the pile foundation 1, the end of the driving rod 4 abuts against the end of the driving rod 4 and drives the reinforcement rod 3 to move out of the pile foundation 1 and enter the soil layer; when driving the reinforcement rod 3 to slide out, the driving rod 4 is inserted into the pile foundation 1, and the driving rod 4 is pressed downward toward the inside of the pile foundation 1. After the end of the driving rod 4 abuts against the reinforcement rod 3, the driving rod 4 squeezes the reinforcement rod 3 to move out of the pile foundation 1 and enter the soil layer. The operation is simple and convenient.
[0024] Reference Figure 1 and Figure 2 In the embodiment of the present application, the pile foundation 1 and the reinforcement rod 3 are both hollow, and a plurality of seepage holes 5 are opened on the circumference of the reinforcement rod 3. The seepage water in the soil layer penetrates into the reinforcement rod 3 through the seepage holes 5, and penetrates into the pile foundation 1 along the reinforcement rod 3. A drainage member 6 is also included, and the drainage member 6 is used to discharge the seepage water in the pile foundation 1; when water seeps into the roadbed 2, the seepage water penetrates into the soil layer and approaches the reinforcement rod 3, which easily causes the soil near the reinforcement rod 3 to become loose. At this time, the seepage water near the reinforcement rod 3 enters the reinforcement rod 3 through the seepage holes 5, and penetrates into the pile foundation 1 along the soil in the reinforcement rod 3, and is then discharged from the pile foundation 1 through the drainage member 6, further reducing the possibility of sinking of the pile foundation 1.
[0025] Reference Figure 1 and Figure 2 In order to facilitate the seepage water in the reinforcement rod 3 to enter the pile foundation 1, a water inlet gap 7 is opened in the pile foundation 1, and the water inlet gap 7 is connected with the inner cavity of the pile foundation 1. The through hole in the pile foundation 1 for the reinforcement rod 3 to slide is connected with the water inlet gap 7. The water inlet gap 7 is opened horizontally, and the seepage holes 5 on the reinforcement rod 3 are connected with the water inlet gap 7. The seepage water in the soil layer in the reinforcement rod 3 is discharged through the seepage holes 5, and enters the water inlet gap 7, and then enters the pile foundation 1; under the action of the water inlet gap 7, it is convenient for the seepage water in the reinforcement rod 3 to penetrate out through the seepage holes 5, enter the water inlet gap 7, and then enter the pile foundation 1.
[0026] Reference Figure 1 and Figure 2 When the seepage water enters the pile foundation 1, the driving rod 4 is located inside the pile foundation 1, resulting in a smaller volume of the pile foundation 1 for the seepage water. Therefore, in the embodiment of the present application, the driving rod 4 is hollow, and a plurality of water inlet holes 8 are evenly opened in the circumferential and longitudinal directions of the driving rod 4. The water inlet holes 8 are connected to the inside of the driving rod 4, and the seepage water in the pile foundation 1 enters the driving rod 4 through the water inlet holes 8; the seepage water that enters the pile foundation 1 through the water inlet notch 7 enters the driving rod 4 through the water inlet holes 8, which facilitates the temporary storage of the seepage water and reduces the influence of the seepage water on the reinforcement rod 3 and the soil around the pile foundation 1.
[0027] Reference Figure 1 and Figure 2 In the embodiment of the present application, the drainage component 6 includes a drainage pipe 61 and a pumping component 62. The drainage pipe 61 is buried in the roadbed 2 and connected to the driving rods 4 in all pile foundations 1. The pumping component 62 is located outside the roadbed 2. The pumping component 62 is used to extract the seepage water in the driving rod 4 and discharge it through the drainage pipe 61. The pumping component 62 can be a water pump, a delivery pump or a water pump, etc. Start the water pump, and the water pump will remove the seepage water in the driving rod 4 from the roadbed 2 through the drainage pipe 61. The operation is simple and convenient.
[0028] Reference Figure 1 and Figure 2 In order to improve the supporting effect of the reinforcement rod 3 on the pile foundation 1, the cross-section of the reinforcement rod 3 is circular or rectangular, and the end of the reinforcement rod 3 outside the pile foundation 1 is pointed; when the cross-section of the reinforcement rod 3 is circular, the length of the reinforcement rod 3 is increased, and the contact area between the reinforcement rod 3 and the soil is increased, thereby improving the supported effect of the reinforcement rod 3; when the cross-section of the reinforcement rod 3 is circular, the supporting surface of the reinforcement rod 3 is increased, and the contact effect with the soil is increased, thereby improving the supported effect of the reinforcement rod 3.
[0029] Reference Figure 2 and Figure 3In order to reduce the penetration of rainwater in the roadbed 2 into the pile foundation 1, a waterproof board 9 is arranged in the roadbed 2. The waterproof board 9 is located above the pile foundation 1. The waterproof board 9 is hollow and has multiple support columns inside. The support columns are used to support the top of the inner cavity of the waterproof board 9; under the action of the waterproof board 9, the penetration path of rainwater is blocked, thereby reducing the possibility of rainwater penetrating into the pile foundation 1; and the waterproof board 9 is hollow, which reduces the dead weight of the waterproof board 9, facilitates the construction of the waterproof board 9 and reduces the load on the roadbed 2; under the action of the support columns, the possibility of damage to the waterproof board 9 is reduced.
[0030] Reference Figure 2 and Figure 3 In order to facilitate the rapid discharge of rainwater in the roadbed 2, a plurality of filter holes 11 are opened on the top of the baffle plate 9. The rainwater in the roadbed 2 enters the inner cavity of the baffle plate 9 through the filter holes 11. A delivery pipe 12 is provided at the bottom of the baffle plate 9. The delivery pipe 12 is used to connect with the drain pipe 61. The rainwater in the roadbed 2 penetrates into the baffle plate 9 and enters the baffle plate 9 through the filter holes 11, and then is delivered to the drain pipe 61 through the delivery pipe 12 to be discharged.
[0031] Reference Figure 2 and Figure 3 In the embodiment of the present application, filter material is filled on the water-blocking plate 9 and in the filter hole 11, and the filter material is used to filter the soil in the rainwater entering the partition; under the action of the filter material, the possibility of fine soil entering the water-blocking plate 9 is reduced, and the possibility of clogging of the water-blocking plate 9 is reduced, which facilitates the discharge of rainwater.
[0032] Reference Figure 2 and Figure 3 In the embodiment of the present application, a scraper is provided at the bottom of the inner cavity of the baffle plate 9, and the scraper is used to act on the soil in the connecting section between the conveying pipe 12 and the baffle plate, and drive the soil to move out of the connecting section. The scraper includes a scraper 13 and a waterproof motor 14 rotatably arranged in the baffle plate 9. The waterproof motor 14 is fixedly arranged at the top of the inner cavity of the baffle plate 9 and the output shaft of the waterproof motor 14 is perpendicular to the baffle plate 9. The scraper 13 is fixedly arranged on the output shaft of the waterproof motor 14. A spiral rod 15 is provided at the bottom of the scraper 13, and one end of the spiral rod 15 enters the conveying pipe 12; when there is a lot of soil in the baffle plate 9 and the conveying pipe 12 is blocked, the waterproof motor 14 is started, and the waterproof motor 14 drives the scraper 13 to rotate. The scraper 13 rotates to sweep the port of the conveying pipe 12 and remove the soil, thereby facilitating the discharge of rainwater in the baffle plate 9; and under the action of the spiral rod 15, the conveying pipe 12 is dredged, reducing the possibility of blockage of the conveying pipe 12.
[0033] Reference Figure 2 and Figure 3In the implementation of this application, a boss 16 is provided at the bottom of the inner cavity of the water baffle 9, the top surface of the boss 16 is higher than the bottom of the inner cavity of the water baffle 9, and the delivery pipe 12 enters the water baffle 9 from the boss 16; under the action of the boss 16, the height of the port of the delivery pipe 12 is increased, and the possibility of blockage of the port of the delivery pipe 12 is reduced.
[0034] The implementation principle of an anti-settlement highway roadbed in the embodiment of the present application is: After the construction of the pile foundation 1 is completed, the reinforcing rod 3 is driven to slide out of the pile foundation 1 by the driving member, and the end of the reinforcing rod 3 enters the soil layer, and the other end of the reinforcing rod 3 is located in the pile foundation 1, so that the reinforcing rod 3 supports the pile foundation 1, and reduces the possibility of the pile foundation 1 sinking due to load or geological conditions, thereby reducing the possibility of the roadbed 2 sinking; when the roadbed 2 is loaded with a large load, the load is transferred to the pile foundation 1, and the pile foundation 1 has a tendency to sink. At this time, under the action of the reinforcing rod 3, the reinforcing rod 3 supports the pile foundation 1, and under the action of the soil between the reinforcing rod 3 and the pile foundation 1, the sinking tendency of the pile foundation 1 is resisted, thereby reducing the possibility of the pile foundation 1 sinking, and further reducing the sinking tendency of the roadbed 2; and when the pile foundation 1 sinks, the soil between the reinforcing rod 3 and the pile foundation 1 is compressed, which increases the difficulty of the pile foundation 1 sinking, further improving the stability of the pile foundation 1.
[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. An anti-settlement highway roadbed, characterized by: The invention comprises a pile foundation (1) and a roadbed (2) arranged on the pile foundation (1), wherein a plurality of reinforcing rods (3) are slidably arranged in the pile foundation (1), wherein the reinforcing rods (3) are arranged along the circumference and length direction of the pile foundation (1), wherein the reinforcing rods (3) are obliquely arranged downward in the pile foundation (1), wherein an acute angle is formed between the reinforcing rods (3) and the axis of the pile foundation (1), and further comprises a driving member for driving the reinforcing rods (3) to slide out and enter a soil layer; wherein the pile foundation (1) and the reinforcing rods (3) are both hollow, wherein a plurality of seepage holes (5) are provided on the circumference of the reinforcing rods (3), wherein the seepage water in the soil layer penetrates into the reinforcing rods (3) through the seepage holes (5), and then penetrates into the pile foundation (1) along the reinforcing rods (3); further comprises a drainage member (6), wherein the drainage member (6) is used to discharge the seepage water in the pile foundation (1).
2. The anti-settling highway roadbed according to claim 1, characterized in that: The driving member comprises a driving rod (4) inserted into the pile foundation (1); the end of the reinforcing rod (3) located in the pile foundation (1) is initially located on the axis of the pile foundation (1); the end of the reinforcing rod (3) located at the axis of the pile foundation (1) is arc-shaped; the end of the driving rod (4) is conical; after the driving rod (4) enters the pile foundation (1), the end of the driving rod (4) abuts against the end of the driving rod (4) to drive the reinforcing rod (3) to move out of the pile foundation (1) and enter the soil layer.
3. The anti-settling highway roadbed according to claim 1, characterized in that: A water inlet gap (7) is provided in the pile foundation (1), the water inlet gap (7) is communicated with the inner cavity of the pile foundation (1), a through hole in the pile foundation (1) for the reinforcing rod (3) to slide is communicated with the water inlet gap (7), the water inlet gap (7) is provided horizontally, a water seepage hole (5) section on the reinforcing rod (3) is communicated with the water inlet gap (7), and the seepage water in the soil layer in the reinforcing rod (3) is discharged through the water seepage hole (5) and enters the water inlet gap (7), and then enters the pile foundation (1).
4. The anti-settling highway roadbed according to claim 2, characterized in that: The driving rod (4) is hollow, and the driving rod (4) is evenly provided with a plurality of water inlet holes (8) in the circumferential direction and the longitudinal direction. The water inlet holes (8) are connected to the interior of the driving rod (4), and the seepage water in the pile foundation (1) enters the driving rod (4) through the water inlet holes (8). The drainage member (6) comprises a drainage pipe (61) and a pumping member (62). The drainage pipe (61) is buried in the roadbed (2) and is connected to the driving rods (4) in all the pile foundations (1). The pumping member (62) is located outside the roadbed (2), and is used to extract the seepage water in the driving rod (4) and discharge it through the drainage pipe (61).
5. The anti-settling highway roadbed according to claim 1, characterized in that: The cross section of the reinforcement rod (3) is circular or rectangular, and the end of the reinforcement rod (3) located outside the pile foundation (1) is pointed.
6. The anti-settling highway roadbed according to claim 4, characterized in that: A water barrier (9) is arranged in the roadbed (2), and the water barrier (9) is located above the pile foundation (1). The water barrier (9) is hollow and has a plurality of support columns arranged inside, and the support columns are used to support the top of the inner cavity of the water barrier (9).
7. The anti-settling highway roadbed according to claim 6, characterized in that: A plurality of filter holes (11) are provided on the top of the water-blocking plate (9), and rainwater in the roadbed (2) enters the inner cavity of the water-blocking plate (9) through the filter holes (11). A delivery pipe (12) is provided at the bottom of the water-blocking plate (9), and the delivery pipe (12) is used to communicate with the drainage pipe (61).
8. The anti-settling highway subgrade according to claim 7, characterized in that: The water-blocking plate (9) and the filter holes (11) are filled with filter material, and the filter material is used to filter soil in rainwater entering the baffle. A scraper is provided at the bottom of the inner cavity of the water-blocking plate (9), and the scraper is used to act on the soil in the connecting section between the conveying pipe (12) and the water-blocking pipe, thereby driving the soil to move out of the connecting section.
9. The anti-settling highway roadbed according to claim 8, characterized in that: The scraper comprises a scraper (13) rotatably arranged in the water-blocking plate (9) and a waterproof motor (14); the waterproof motor (14) is fixedly arranged at the top of the inner cavity of the water-blocking plate (9) and the output shaft of the waterproof motor (14) is perpendicular to the water-blocking plate (9); the scraper (13) is fixedly arranged on the output shaft of the waterproof motor (14); a spiral rod (15) is arranged at the bottom of the scraper (13), and one end of the spiral rod (15) enters the conveying pipe (12).
10. The anti-settling highway subgrade according to claim 7, characterized in that: A boss (16) is provided at the bottom of the inner cavity of the water baffle (9), the top surface of the boss (16) is higher than the bottom of the inner cavity of the water baffle (9), and the delivery pipe (12) enters the water baffle (9) from the boss (16).