A roadbed drainage process

Abstract

The present application relates to a roadbed drainage process, which includes the following steps: excavating longitudinal drainage ditches on both sides of the roadbed, and excavating a number of transverse drainage ditches between the two longitudinal drainage ditches, the two ends of the transverse drainage ditches are connected to the longitudinal drainage ditches, and the transverse drainage ditches are arranged at equal intervals along the length direction of the longitudinal drainage ditches, an impermeable layer is buried at the bottom of the transverse drainage ditch, and a filter layer is filled in the transverse drainage ditch. By adopting the above technical solution, the water in the roadbed soil is drained through the transverse drainage ditch and the transverse drainage ditch at the same time, and the probability of rainwater infiltrating into the soil is also reduced. Thereby, the water content of the soil at the location of the roadbed is reduced, and the roadbed precipitation is better carried out. At the same time, after the roadbed is built, the transverse drainage ditch and the longitudinal drainage ditch can also continue to drain rainwater or road surface water or water in the soil to better maintain the stability of the roadbed.

Description

Technical Field

[0001] The present application relates to the field of municipal construction, and in particular to a roadbed drainage process. Background Art

[0002] Reducing soil moisture is key to ensuring roadbed stability. Numerous existing methods exist for roadbed drainage, such as digging drainage ditches on both sides of the roadbed to divert water and reduce soil moisture. However, if the soil moisture content in a region is high, drainage ditches alone may not be sufficient to reduce it to an appropriate level. Therefore, optimizing roadbed dewatering is a pressing issue for municipal construction. Summary of the Invention

[0003] In order to better dewater the roadbed,

[0004] This application provides a roadbed drainage process that adopts the following technical solutions:

[0005] A roadbed drainage process comprises the following steps: excavating longitudinal drainage ditches on both sides of the roadbed, and excavating a plurality of transverse drainage ditches between the two longitudinal drainage ditches, wherein both ends of the transverse drainage ditches are connected to the longitudinal drainage ditches, and the transverse drainage ditches are arranged at equal intervals along the length direction of the longitudinal drainage ditches, an impermeable layer is buried at the bottom of the transverse drainage ditches, and a filter layer is filled in the transverse drainage ditches.

[0006] By adopting this technical solution, water in the roadbed soil is drained simultaneously through the transverse and longitudinal drainage ditches, reducing the probability of rainwater infiltration into the soil. This reduces the moisture content of the soil at the roadbed location and effectively manages roadbed precipitation. Furthermore, after the roadbed is constructed, the transverse and longitudinal drainage ditches can continue to drain rainwater, surface water, and soil moisture, further maintaining roadbed stability.

[0007] Optionally, the longitudinal drainage ditch includes several direct current sections and several sedimentation sections, the direct current sections are arranged along the length direction of the roadbed, the sedimentation sections are arranged in a circular arc, and the sedimentation sections are located between two adjacent direct current sections and connect the two direct current sections, and the sedimentation sections protrude from the direct current sections; the transverse drainage ditch is connected to the direct current section.

[0008] By adopting this technical solution, during daily drainage, the water flow slows down when passing through the sedimentation section, and leaves, silt, and other debris in the water flow are easily deposited in the sedimentation section, making it easier to centrally clean the drainage ditch later. At the same time, the sedimentation section can also be used to avoid some obstacles.

[0009] Optionally, the longitudinal drainage ditch is cast by a drainage ditch forming machine after excavation, and the drainage ditch forming machine includes a moving platform, a first driving mechanism for driving the moving platform to move along a preset direction of the longitudinal drainage ditch, a concrete silo installed on the moving platform for pouring concrete, a front leveling mold for leveling the longitudinal drainage ditch after excavation, a leveling mold for leveling the concrete after pouring, and a rear leveling mold for leveling the concrete after leveling for the second time. A second driving mechanism for driving the leveling mold to reciprocate back and forth and move in a vertical direction is provided between the leveling mold and the moving platform, and the cross-sections of the front leveling mold, the leveling mold, and the rear leveling mold are all of the same shape.

[0010] By adopting the above technical solution, the mobile platform moves along the predetermined track to pour concrete and smooth the longitudinal drainage ditch, thereby completing the pouring and leveling of the drainage ditch at one time, which facilitates the construction of the drainage ditch.

[0011] Optionally, the first driving mechanism includes a front traveling wheel group rotatably connected to the front end of the mobile platform, a rear traveling wheel group rotatably connected to the rear end of the mobile platform, and a steering driving group for driving the front traveling wheel group to turn; when the mobile platform moves along the DC section, the front traveling wheel group and the rear traveling wheel group are parallel to the DC section.

[0012] By adopting the above technical solution, the mobile platform can move in four-wheel drive mode, so that the drainage ditch forming machine can move along the pre-excavated channel to better form the longitudinal drainage ditch.

[0013] Optionally, the steering drive group is also used to drive the rear wheel group to steer; when the mobile platform moves along the deposition section, the front wheel group is parallel to the tangent at the corresponding deposition section, and the rear wheel group is tangent to the tangent at the corresponding deposition section.

[0014] By adopting the above technical solution, the drainage ditch forming machine can transition from the direct current section to the sedimentation section more smoothly and quickly, so that the drainage ditch forming machine can complete the casting of the longitudinal drainage ditch more smoothly.

[0015] Optionally, the front traveling wheel group includes a left front motor rotatably connected to the mobile platform, a left front wheel connected to the output end of the left front motor, a right front motor rotatably connected to the mobile platform, and a right front wheel connected to the output end of the right front motor; the steering drive group includes a left front steering motor for driving the left front motor to rotate relative to the mobile platform and a right front steering motor for driving the right front motor to rotate relative to the mobile platform.

[0016] By adopting the above technical solution, the four corners of the movable platform can independently control the amplitude and direction of rotation, so that the movable platform can move more smoothly along the predetermined track of the longitudinal drainage ditch.

[0017] Optionally, the left front wheel corresponds to a deposition section away from the roadbed, and when the mobile platform moves along the deposition section, the position of the left front wheel is parallel to the tangent of the corresponding deposition section away from the roadbed; the right front wheel corresponds to a deposition section close to the roadbed, and when the mobile platform moves along the deposition section, the position of the right front wheel is parallel to the tangent of the corresponding deposition section close to the roadbed.

[0018] By adopting the above technical solution, the drainage ditch forming machine can transition from the direct current section to the sedimentation section more smoothly and quickly, so that the drainage ditch forming machine can complete the casting of the longitudinal drainage ditch more smoothly.

[0019] Optionally, when the movable platform moves to the deposition section, the movable platform reciprocates along the length direction of the deposition section, and the second driving mechanism is only used to drive the trowel to move in the vertical direction.

[0020] By adopting the above technical solution, the poured concrete can be better smoothed and laid in the pre-dug longitudinal drainage channel.

[0021] Optionally, the second driving mechanism includes guide plates located on both sides of the smoothing mold and installed on the movable platform, a driving cylinder for driving the smoothing mold to move in the vertical direction, a slider fixedly connected to both sides of the smoothing mold, and a pushing cylinder. The guide plate is provided with a guide groove group facing the side of the smoothing mold, and the guide groove group includes a first guide groove that is wavy in the vertical direction, a second guide groove that is straight in the vertical direction, and a horizontally arranged connecting groove connecting the first guide groove and the second guide groove. When the driving cylinder drives the smoothing mold to move, the slider slides in the first guide groove or the second guide groove, and the pushing cylinder is used to drive the slider to slide in the connecting groove.

[0022] By adopting the above technical solution, the movement form of the smoothing mold can be switched between horizontal movement accompanied by vertical movement and pure vertical movement, and the structure is simple, which fully meets the construction requirements of the direct current section and the deposition section.

[0023] Optionally, the connecting groove communicates with the lower end of the first guide groove and the lower end of the second guide groove.

[0024] By adopting the above technical solution, the trowel can not only switch the movement state when being pushed by the pushing cylinder, but also further smooth the longitudinal drainage ditch, thereby better constructing the longitudinal drainage ditch.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. It can better carry out groundwater dewatering and soil drainage, thereby achieving roadbed dewatering;

[0027] 2. It can make concentrated sedimentation during drainage, which is convenient for subsequent cleaning of the longitudinal drainage ditch;

[0028] 3. The concrete pouring construction of the longitudinal drainage ditch can be completed easily and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of Example 1.

[0030] Figure 2 This is a cross-sectional view of Example 2.

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0032] Figure 4 It is a schematic diagram of the movement of Example 3 in the longitudinal drainage ditch.

[0033] Figure 5 It is a structural diagram of Example 3.

[0034] Figure 6 This is a top view of Example 3.

[0035] Figure 7 It is a cross-sectional view of Example 3 at the drive cylinder.

[0036] Figure 8 It is a cross-sectional view of Example 3 at the guide plate.

[0037] Figure 9 Schematic diagram of the structure of the guide plate in Example 3.

[0038] Explanation of the reference numerals: 1. longitudinal drainage ditch; 2. transverse drainage ditch; 3. direct current section; 4. sedimentation section; 5. roadbed; 6. drainage ditch forming machine; 7. moving platform; 8. first driving mechanism; 9. concrete silo; 10. front leveling mold; 11. leveling mold; 12. rear leveling mold; 13. second driving mechanism; 14. front traveling wheel group; 15. rear traveling wheel group; 16. steering driving group; 17. left front motor; 18. left front wheel; 19. right front motor; 20. right front wheel; 21. left rear motor; 22. left rear wheel; 23. right rear motor; 24. right rear wheel; 25. left front steering motor; 26. right front steering motor; 27. left rear steering motor; 28. right rear steering motor; 29. ​​guide plate; 30. drive cylinder; 31. slider; 32. push cylinder; 33. first guide groove; 34. second guide groove; 35. connecting groove; 36. dovetail groove; 37. dovetail block; 38. impermeable layer; 39. filter layer; 40. concrete layer. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-9This application is described in further detail.

[0040] Example 1:

[0041] Example 1 of the present application discloses a roadbed drainage ditch. Figure 1 A roadbed drainage ditch includes two longitudinal drainage ditches 1 and several transverse drainage ditches 2. The two longitudinal drainage ditches 1 are respectively located on both sides of the roadbed 5 and are symmetrically arranged along the length direction of the roadbed 5. The longitudinal drainage ditch 1 includes several direct current sections 3 and several sedimentation sections 4. The direct current section 3 is arranged along the length direction of the roadbed 5, and the sedimentation section 4 is arranged in an arc shape, and the open end of the sedimentation section 4 faces the roadbed 5. The sedimentation section 4 is located between two adjacent direct current sections 3 and connects the two direct current sections 3. The drainage ditch is located between two symmetrical direct current sections 3, and the transverse drainage ditch 2 is connected to the direct current section 3.

[0042] The water in the soil of the roadbed 5 is drained simultaneously through the transverse drainage ditch 2 and the transverse drainage ditch 2, which also reduces the probability of rainwater infiltrating into the soil. This reduces the water content of the soil at the location of the roadbed 5, and better irrigates the roadbed 5. At the same time, after the construction of the roadbed 5 is completed, the transverse drainage ditch 2 and the longitudinal drainage ditch 1 can also continue to drain rainwater, road surface water, or water in the soil, and better maintain the stability of the roadbed 5. During daily drainage, the flow rate of water will slow down when it flows through the sedimentation section 4, and leaves, mud, and other debris in the water flow are easily deposited in the sedimentation section 4, which facilitates the subsequent centralized cleaning of the drainage ditch. At the same time, some obstacles can also be avoided through the sedimentation section 4.

[0043] Example 2:

[0044] Example 2 discloses a roadbed drainage process for constructing the roadbed drainage ditch as described in Example 1, and the steps are as follows:

[0045] S1. Reference Figure 1 , longitudinal drainage ditches 1 are excavated on both sides of the roadbed 5;

[0046] S2, reference Figure 1 , digging between the longitudinal drainage ditches 1 to form transverse drainage ditches 2;

[0047] S3. Reference Figure 2 and Figure 3 , bury an impermeable layer 38 at the bottom of the transverse drainage ditch 2, and then fill the transverse drainage ditch 2 with a filter layer 39;

[0048] S4, reference Figure 4 The longitudinal drainage ditch 1 excavated in S1 is poured by the drainage ditch forming machine 6 to form a concrete layer 40, completing the construction of the drainage ditch on the roadbed 5.

[0049] Example 3

[0050] Example 3 discloses a drainage ditch forming machine used in Example 2.

[0051] Reference Figure 5 and Figure 6 The drainage ditch forming machine 6 includes a movable platform 7, a first drive mechanism 8 for driving the movable platform 7 to move along a preset direction of the longitudinal drainage ditch 1, a concrete silo 9 mounted on the movable platform 7 for pouring concrete, a front leveling mold 10 for leveling the longitudinal drainage ditch 1 after excavation, a trowel mold 11 for leveling the poured concrete, and a rear leveling mold 12 for secondary leveling of the leveled concrete. A second drive mechanism 13 is provided between the trowel mold 11 and the movable platform 7 for driving the trowel mold to reciprocate back and forth and move in a vertical direction. A stirring mechanism is provided in the concrete silo 9, and the discharge port of the concrete silo 9 is located between the front leveling mold 10 and the trowel mold 11. A solenoid valve is provided at the discharge port of the concrete silo for opening and closing the discharge port.

[0052] As the mobile platform 7 moves along a predetermined track, when it corresponds to the direct current section 3, it moves smoothly forward, while the trowel 11 descends and reciprocates back and forth, completing the concrete pouring and troweling of the direct current section 3. When the mobile platform 7 corresponds to the deposition section 4, it reciprocates along the length of the deposition section 4, while the trowel 11 moves vertically with the movement of the mobile platform 7, completing the concrete pouring and troweling of the deposition section 4. This allows for the concreting and troweling of the longitudinal drainage ditch 1 to be completed in one go, facilitating construction.

[0053] Reference Figure 5 and Figure 6 The first driving mechanism 8 includes a front traveling wheel group 14 rotatably connected to the front end of the moving platform 7, a rear traveling wheel group 15 rotatably connected to the rear end of the moving platform 7, and a steering driving group 16 for driving the front traveling wheel group 14 and the rear traveling wheel group 15 to turn.

[0054] Reference Figure 5 and Figure 6 The front traveling wheel assembly 14 includes a left front motor 17 rotatably connected to the moving platform 7, a left front wheel 18 connected to the output terminal of the left front motor 17, and a right front motor 19 rotatably connected to the moving platform 7 and a right front wheel 20 connected to the output terminal of the right front motor 19. The left front wheel 18 corresponds to the side of the deposition section 4 away from the roadbed 5, and the right front wheel 20 corresponds to the side of the deposition section 4 close to the roadbed 5.

[0055] Reference Figure 5 and Figure 6The rear traveling wheel assembly 15 includes a left rear motor 21 rotatably connected to the moving platform 7, a left rear wheel 22 connected to the output terminal of the left rear motor 21, and a right rear motor 23 rotatably connected to the moving platform 7 and a right rear wheel 24 connected to the output terminal of the right rear motor 23. The left rear wheel 22 corresponds to the side of the deposition section 4 away from the roadbed 5, and the right rear wheel 24 corresponds to the side of the deposition section 4 close to the roadbed 5.

[0056] Reference Figure 5 and Figure 6 The steering drive group 16 includes a left front steering motor 25 for driving the left front motor 17 to rotate relative to the moving platform 7, a right front steering motor 26 for driving the right front motor 19 to rotate relative to the moving platform 7, a left rear steering motor 27 for driving the left rear motor 21 to rotate relative to the moving platform 7, and a right rear steering motor 28 for driving the right rear motor 23 to rotate relative to the moving platform 7.

[0057] Reference Figure 5 and Figure 6 The left front motor 17 is rotatably connected to the mobile platform 7 via the left front turntable. The left front steering motor 25 is fixedly mounted on the mobile platform 7. A bevel gear transmission is provided between the left front steering motor 25 and the left front turntable, thereby enabling the left front rotating motor to drive the left front motor 17 to rotate relative to the mobile platform 7. The right front motor 19 is rotatably connected to the mobile platform 7 via the right front turntable. The right front steering motor 26 is fixedly mounted on the mobile platform 7. A bevel gear transmission is provided between the right front steering motor 26 and the right front turntable, thereby enabling the right front rotating motor to drive the right front motor 19 to rotate relative to the mobile platform 7.

[0058] Reference Figure 5 and Figure 6 The left rear motor 21 is rotatably connected to the mobile platform 7 via the left rear turntable. The left rear steering motor 27 is fixedly mounted on the mobile platform 7. A bevel gear transmission is provided between the left rear steering motor 27 and the left rear turntable, allowing the left rear rotation motor to drive the left rear motor 21 to rotate relative to the mobile platform 7. The right rear motor 23 is rotatably connected to the mobile platform 7 via the right rear turntable. The right rear steering motor 28 is fixedly mounted on the mobile platform 7. A bevel gear transmission is provided between the right rear steering motor 28 and the right rear turntable, allowing the right rear rotation motor to drive the right rear motor 23 to rotate relative to the mobile platform 7.

[0059] When the mobile platform 7 travels along the direct current section 3, the left front wheel 18, right front wheel 20, left rear wheel 22, and right rear wheel 24 are all parallel to the roadbed 5. When the mobile platform 7 travels along the deposition section 4, the left front wheel 18 and left rear wheel 22 are respectively parallel to the tangent line of their corresponding deposition section 4 on the side away from the roadbed 5; the right front wheel 20 and right rear wheel 24 are respectively parallel to the tangent line of their corresponding deposition section 4 on the side close to the roadbed 5. This allows the mobile platform 7 to travel along a predetermined trajectory, effectively completing the pouring of the longitudinal drainage ditch 1.

[0060] Reference Figure 7 and Figure 8 The second driving mechanism 13 includes a guide plate 29, a driving cylinder 30, a slider 31, and a push cylinder 32. The guide plate 29 is provided with two pieces and is fixedly connected to the left and right sides of the moving platform 7. Figure 8 and Figure 9 The guide plate 29 has a guide groove assembly on the side facing the trowel mold 11. The guide groove assembly includes a first guide groove 33 that is vertically wavy, a second guide groove 34 that is vertically linear, and a horizontal connecting groove 35 that connects the first guide groove 33 and the second guide groove 34. The connecting groove 35 connects the lower ends of the first guide groove 33 and the lower ends of the second guide groove 34. The slider 31 is slidably connected to the guide groove assembly.

[0061] Reference Figure 8 The trowel die 11 is located between the two guide plates 29, and the slider 31 is fixedly connected to the trowel die 11. Two drive cylinders 30 are provided and are both located between the trowel die 11 and the movable platform 7. The cylinder body of the drive cylinder 30 is fixedly connected to the movable platform 7, and a dovetail block 37 is fixedly connected to the piston rod of the drive cylinder 30. A dovetail groove 36 is opened on the upper end surface of the trowel die 11 along the length direction of the DC section 3, and the dovetail block 37 is slidably connected to the dovetail groove 36. Figure 7 . Two push cylinders 32 are provided and are respectively located on the front and rear sides of the smoothing mold 11. The cylinder body of the push cylinder 32 is fixedly connected to the movable platform 7, and the piston rod of the push cylinder 32 faces the smoothing mold 11.

[0062] When pouring the direct current section 3, the slider 31 is in the first guide groove 33, and the drive cylinder 30 applies a vertical driving force to the trowel mold 11, causing it to rise and fall while reciprocating back and forth, thereby smoothing the concrete poured in the direct current section 3. When pouring the deposition section 4, the push cylinder 32 pushes the trowel mold 11 to slide within the connecting groove 35 until the slider 31 reaches the second guide groove 34. The drive cylinder 30 applies a vertical driving force to the trowel mold 11, causing it to only rise and fall, meeting the pouring requirements.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A roadbed drainage process, characterized by: The method comprises the following steps: excavating longitudinal drainage ditches (1) on both sides of a roadbed (5), and excavating a plurality of transverse drainage ditches (2) between the two longitudinal drainage ditches (1); both ends of the transverse drainage ditches (2) are connected to the longitudinal drainage ditches (1); and the transverse drainage ditches (2) are arranged at equal intervals along the length direction of the longitudinal drainage ditches (1); an impermeable layer (38) is buried at the bottom of the transverse drainage ditches (2); and a filter layer (39) is filled in the transverse drainage ditches (2); The longitudinal drainage ditch (1) is cast by a drainage ditch forming machine (6) after excavation. The drainage ditch forming machine (6) comprises a moving platform (7), a first driving mechanism (8) for driving the moving platform (7) to move along a preset direction of the longitudinal drainage ditch (1), a concrete silo (9) mounted on the moving platform (7) for casting concrete, a front leveling mold (10) for leveling the longitudinal drainage ditch (1) after excavation, a trowel mold (11) for leveling the poured concrete, and a rear leveling mold (12) for secondary leveling the leveled concrete. A second driving mechanism (13) for driving the trowel mold (11) to reciprocate forward and backward and move in a vertical direction is provided between the trowel mold (11) and the moving platform (7). The cross sections of the front leveling mold (10), the trowel mold (11), and the rear leveling mold (12) are all of the same shape. The second driving mechanism (13) comprises guide plates (29) located on both sides of the smoothing die (11) and mounted on the movable platform (7), a driving cylinder (30) for driving the smoothing die (11) to move in a vertical direction, sliders (31) fixedly connected to both sides of the smoothing die (11), and a pushing cylinder (32). The guide plates (29) are provided with a guide groove group on one side facing the smoothing die (11), and the guide groove group comprises a first guide groove (33) in a wavy shape in the vertical direction, a second guide groove (34) in a straight shape in the vertical direction, and a horizontally arranged connecting groove (35) connecting the first guide groove (33) and the second guide groove (34). When the driving cylinder (30) drives the smoothing die (11) to move, the slider (31) slides in the first guide groove (33) or the second guide groove (34), and the pushing cylinder (32) is used to drive the slider (31) to slide in the connecting groove (35).

2. A roadbed drainage process according to claim 1, characterized in that: The longitudinal drainage ditch (1) comprises a plurality of direct current sections (3) and a plurality of sedimentation sections (4); the direct current sections (3) are arranged along the length direction of the roadbed (5); the sedimentation sections (4) are arranged in an arc shape; the sedimentation sections (4) are located between two adjacent direct current sections (3) and connect the two direct current sections (3); the sedimentation sections (4) protrude from the direct current sections (3); and the transverse drainage ditch (2) is connected to the direct current section (3).

3. A roadbed drainage process according to claim 2, characterized in that: The first driving mechanism (8) comprises a front traveling wheel group (14) rotatably connected to the front end of the mobile platform (7), a rear traveling wheel group (15) rotatably connected to the rear end of the mobile platform (7), and a steering drive group (16) for driving the front traveling wheel group (14) to turn; when the mobile platform (7) moves along the DC section (3), the front traveling wheel group (14) and the rear traveling wheel group (15) are parallel to the DC section (3).

4. A roadbed drainage process according to claim 3, characterized in that: The steering drive group (16) is also used to drive the rear traveling wheel group (15) to turn; when the mobile platform (7) moves along the deposition section (4), the front traveling wheel group (14) is parallel to the tangent line at the corresponding deposition section (4), and the rear traveling wheel group (15) is tangent to the tangent line at the corresponding deposition section (4).

5. A roadbed drainage process according to claim 4, characterized in that: The front traveling wheel group (14) comprises a left front motor (17) rotatably connected to the mobile platform (7), a left front wheel (18) connected to the output end of the left front motor (17), a right front motor (19) rotatably connected to the mobile platform (7), and a right front wheel (20) connected to the output end of the right front motor (19); the steering drive group (16) comprises a left front steering motor (25) for driving the left front motor (17) to rotate relative to the mobile platform (7) and a right front steering motor (26) for driving the right front motor (19) to rotate relative to the mobile platform (7).

6. A roadbed drainage process according to claim 5, characterized in that: The left front wheel (18) corresponds to a side of the deposition section (4) away from the roadbed (5), and when the mobile platform (7) moves along the deposition section (4), the position of the left front wheel (18) is parallel to a tangent line of the corresponding deposition section (4) away from the roadbed (5); the right front wheel (20) corresponds to a side of the deposition section (4) close to the roadbed (5), and when the mobile platform (7) moves along the deposition section (4), the position of the right front wheel (20) is parallel to a tangent line of the corresponding deposition section (4) close to the roadbed (5).

7. A roadbed drainage process according to claim 6, characterized in that: When the movable platform (7) moves to the deposition section (4), the movable platform (7) reciprocates along the length direction of the deposition section (4), and the second driving mechanism (13) is only used to drive the trowel mold (11) to move in the vertical direction.

8. A roadbed drainage process according to claim 7, characterized in that: The connecting groove (35) communicates with the lower end of the first guide groove (33) and the lower end of the second guide groove (34).

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