CN216664395U

CN216664395U - Drainage ditch structure for roadbed slope

Info

Publication number: CN216664395U
Application number: CN202122738906.1U
Authority: CN
Inventors: 张利国
Original assignee: Sichuan Tibet Railway Co ltd
Current assignee: Sichuan Tibet Railway Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-06-03
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a drainage ditch structure for a roadbed slope, which comprises a ditch body, wherein a drainage channel with an open top is formed in the ditch body, and a local drainage unit is formed in the ditch body, and is used for introducing underground water in the slope into the drainage channel, and draining inflow surface water and the introduced and drained underground water. The ditch wall and the ditch bottom of the utility model adopt an integrated concrete or masonry forming mode to meet the strength requirement of a roadbed or a cutting slope, surface water is introduced into the drainage channel through the ditch side top lower than the slope, underground water with a certain depth is introduced into the drainage channel through the water guide end protruding out of the ditch wall, water guide is more convenient and reasonable through the design of the spatial position of the drainage hole, and the drainage requirement is met through the distributed local drainage unit and also meets the engineering strength requirement. The utility model can drain surface water and underground water with a certain depth, is convenient to maintain and has higher popularization and use values.

Description

Drainage ditch structure for roadbed slope

Technical Field

The utility model belongs to the technical field of civil engineering design, and particularly relates to a drainage ditch structure for a roadbed slope.

Background

In railway engineering, a drainage ditch is designed and constructed at a roadbed or a cutting slope so as to drain underground water of the roadbed or the cutting slope, and the drainage ditch structure is usually in a concrete pouring or building mode.

Chinese patent ZL201310206314.2 discloses a reinforced earth composite structure escape canal, the ditch wall of this patent escape canal both sides is equipped with reinforced earth composite structure bottom from bottom to top in proper order, middle level and upper strata, the top surface on upper strata is equipped with the capping layer, the middle part is provided with the former soil layer at the bottom of the ditch along escape canal length direction at the bottom of the ditch, former soil horizon both sides are provided with pervious base angle inoxidizing coating respectively at the bottom of the ditch, this bottom, the middle level, the outside of upper strata and the bottom of bottom all are provided with the coarse gravel layer, coarse gravel layer next door is provided with the clay layer, the bottom on every layer, the top, the equal cladding of inboard surface has geotechnological cloth.

The original soil layer at the bottom of the ditch at the bottom of the patent ditch is not suitable for an engineering drainage ditch structure.

Chinese patent ZL201520319720.4 discloses a light and dark double-layer structure drainage ditch, which comprises a light and dark double-layer structure, wherein the light and dark double-layer structure drainage ditch mainly comprises an open drainage ditch and a closed drainage ditch, the open drainage ditch is rectangular and adopts a concrete structure, and a drainage port is arranged on the side wall of the open drainage ditch and is rectangular in shape; the drainage blind ditch is positioned below the drainage open ditch and is rectangular, and broken stones are filled in the groove of the drainage blind ditch and are wrapped by geotextile.

Light and shade bilayer structure in this patent only is applicable to the great farmland of soil area, is not applicable to the engineering road bed equally.

Disclosure of Invention

The utility model provides a drainage ditch structure for a roadbed slope, which aims to solve the problems in the prior art.

The technical scheme of the utility model is as follows: a drainage ditch structure for a subgrade slope comprises a ditch body, wherein a drainage channel with an open top is formed in the ditch body, a local drainage unit is formed in the ditch body and introduces underground water in the slope into the drainage channel, and the drainage channel discharges inflow surface water and introduced and drained underground water.

Furthermore, the drainage channel comprises a groove wall and a groove bottom, wherein the groove wall is located on two sides of the drainage channel, the groove bottom is located at the bottom of the drainage channel, and the groove wall and the groove bottom are of an integrated structure.

Further, a drainage slope angle is formed in the groove bottom, and the surface water and the drainage underground water in the groove body are discharged along a single direction.

Furthermore, the local drainage units are arranged on the wall of the ditch, and are uniformly distributed at equal intervals along the length direction of the ditch body.

Furthermore, the local drainage units are arranged in a plurality of rows in the unilateral ditch wall.

Further, in a longitudinal plane perpendicular to the bottom of the trench, the local drainage unit is inclined toward the direction of the trench body, thereby facilitating the introduction of groundwater in the slope into the drainage channel.

Furthermore, in the transverse plane parallel to the bottom of the ditch, the local drainage units are inclined towards the drainage direction of the ditch body, so that the drainage of underground water in the side slope is facilitated.

Furthermore, the local drainage unit is a prefabricated or later-punched drainage guide hole in the ditch wall, and the drainage guide hole is a through hole.

Further, the partial drain unit is a drain pipe provided in the drain hole, and the drain pipe is either installed in the drain hole.

Furthermore, the two ends of the drain pipe are provided with inverted filter layers.

The utility model has the following beneficial effects:

the ditch wall and the ditch bottom of the utility model adopt an integrated concrete or masonry forming mode to meet the strength requirement of a roadbed or a cutting slope, surface water is introduced into the drainage channel through the ditch side top lower than the slope, underground water with a certain depth is introduced into the drainage channel through the water guide end protruding out of the ditch wall, water guide is more convenient and reasonable through the design of the spatial position of the drainage hole, and the drainage requirement is met through the distributed local drainage unit and also meets the engineering strength requirement.

The utility model can drain surface water and underground water with a certain depth, is convenient to maintain and has higher popularization and use values.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is another schematic structural view of the present invention;

FIG. 3 is a schematic view showing the structure of a drain pipe according to the present invention;

wherein:

1 groove body 2 leading hole

3 drain pipe 4 reverse filter layer

5 slope 6 drainage channel

11 trench wall 12 trench bottom

13 ditch side top

31 water diversion end 32 drainage end

33 drain off the water.

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings and examples:

as shown in fig. 1 to 3, the drainage ditch structure for the side slope of the roadbed comprises a ditch body 1, wherein a drainage channel 6 with an open top is formed in the ditch body 1, a local drainage unit is formed in the ditch body 1, the local drainage unit introduces underground water in the side slope into the drainage channel 6, and the drainage channel 6 discharges inflow surface water and introduced and discharged underground water.

The drainage channel 6 comprises a ditch wall 11 positioned at two sides and a ditch bottom 12 positioned at the bottom, wherein the ditch wall 11 and the ditch bottom 12 are of an integral structure.

A drainage slope angle is formed in the ditch bottom 12, and the surface water and the drainage underground water in the ditch body 1 are discharged along a single direction.

The local drainage units are arranged on the ditch wall 11, and are uniformly distributed at equal intervals along the length direction of the ditch body 1.

The local drainage units are arranged in a plurality of rows in the unilateral trench wall 11.

In a longitudinal plane perpendicular to the trench bottom 12, the local drainage cells are inclined toward the trench body 1, thereby facilitating the introduction of groundwater in the slope into the drainage channel 6.

In the horizontal plane parallel to the trench bottom 12, the local drainage cells are inclined toward the drainage direction of the trench body 1, facilitating drainage of groundwater in the slope.

The local drainage unit is a prefabricated or later-stage perforated drainage hole 2 in the ditch wall 11, and the drainage hole 2 is a through hole.

The local drainage unit is a drainage pipe 3 disposed in the drainage hole 2, and the drainage pipe 3 is either installed in the drainage hole 2.

And the two ends of the drain pipe 3 are provided with inverted filter layers 4.

The top of the ditch wall 11 of the ditch body 1 is a ditch side top 13, and the ditch side top 13 and the side slope 5 are in smooth transition, so that surface water can be gathered in the ditch body 1, further enters the drainage channel 6 through a mechanism with an open top, and is discharged under the guidance of the ditch bottom 12.

The end of the drainage pipe 3 facing the drainage channel 6 is a drainage end 32, correspondingly, the end of the drainage pipe 3 facing away from the drainage channel 6 is a drainage end 31, and the horizontal position of the drainage end 31 is higher than that of the drainage end 32.

The water diversion end 31 protrudes outwards from the trench wall 11, namely the water diversion end 31 enters the roadbed or the cutting slope, so that the underground water is effectively guided into the drainage channel 6 through the drainage pipe 3.

Preferably, the included angle between the groove wall 11 and the groove bottom 12 is a right angle, and the groove body 1 is in a rectangular groove shape. As shown in fig. 1.

Preferably, the included angle between the groove wall 11 and the groove bottom 12 is an obtuse angle, and the groove body 1 is in the shape of a flared groove. As shown in fig. 2.

The ditch wall 11 and the ditch bottom 12 are of an integrated concrete structure.

Yet another embodiment

A drainage ditch structure for a subgrade slope comprises a ditch body 1, wherein a drainage channel 6 with an open top is formed in the ditch body 1, a local drainage unit is formed in the ditch body 1 and introduces underground water in the slope into the drainage channel 6, and the drainage channel 6 discharges inflow surface water and introduced and discharged underground water.

Preferably, the included angle between the groove wall 11 and the groove bottom 12 is an obtuse angle, and the groove body 1 is in a flared groove shape. As shown in fig. 2.

In this embodiment, the drain holes 2 in the trench wall 11 are inclined at a certain angle to the trench, the angle is preferably 5-20 degrees, and the inclination angle of the drain pipe 3 after installation corresponds to the angle, so that drainage is facilitated.

The drain hole 2 in the ditch wall 11 inclines a certain angle to the drainage direction of the drainage ditch, the angle is preferably 10-30 degrees, the inclination angle of the drain pipe 3 after installation corresponds to the angle, drainage is facilitated, and water in the ditch is prevented from flowing backwards.

The drain holes 2 in the trench wall 11 are uniformly arranged in 2 rows from top to bottom, the horizontal distance is generally 1-2 meters, the drain holes 2 are uniformly arranged from top to bottom according to the trench depth, namely, the drain holes 2 in the lower row are positioned in the middle of the trench wall 11, and the drain holes 2 in the upper row are positioned at the top of the trench wall 11.

Preferably, the diameter of the drain hole 2 in the trench wall 11 is generally 5-7 cm.

Preferably, the drain pipe 3 is a plastic pipe, and the diameter of the drain pipe is set according to the drain ditch.

The reverse filter layer 4 of the drain pipe 3 is generally formed by combining a geonet and a geotextile, and can prevent soil particles from being carried away by water.

Correspondingly, in the area with abundant rainfall, the drainage end 32 of the drainage pipe 3 is covered with a one-way membrane to prevent the water in the drainage channel 6 from entering the drainage pipe 3.

The water diversion end 31 extends out of the trench wall 11, and the extended parts are all covered with the inverted filter layer 4.

The drain pipe 3 forms a drain surface 33 at the drain end 32, which drain surface 33 is flush with the trench wall 11.

When the groove body 1 is in a rectangular groove shape, the drainage surface 33 is a flat surface, and when the groove body 1 is in a flared groove shape, the drainage surface 33 is an inclined surface.

Claims

1. The utility model provides a road bed is escape canal structure for side slope, includes ditch body (1), its characterized in that: the drainage channel (6) with an open top is formed in the ditch body (1), the local drainage unit introduces underground water in a side slope into the drainage channel (6), and the drainage channel (6) discharges inflow surface water and introduced and drained underground water.

2. The gutter structure for a subgrade slope according to claim 1, characterized in that: the drainage channel (6) comprises a groove wall (11) positioned on two sides and a groove bottom (12) positioned at the bottom, and the groove wall (11) and the groove bottom (12) are of an integrated structure.

3. The gutter structure for a subgrade slope according to claim 2, wherein: a drainage slope angle is formed in the ditch bottom (12), and the surface water and the drainage underground water in the ditch body (1) are discharged along a single direction.

4. The gutter structure for a subgrade slope according to claim 2, wherein: the local drainage units are arranged on the ditch wall (11), and are uniformly distributed at equal intervals along the length direction of the ditch body (1).

5. The gutter structure for a subgrade slope according to claim 4, wherein: the local drainage units are arranged in a single-side ditch wall (11) in a plurality of rows from top to bottom.

6. The drainage ditch structure for a subgrade side slope according to claim 4, characterized in that: in a longitudinal plane perpendicular to the trench bottom (12), the local drainage unit is inclined toward the trench body (1), thereby facilitating the introduction of groundwater in a slope into the drainage channel (6).

7. The drainage ditch structure for a subgrade side slope according to claim 5, characterized in that: in the cross plane parallel to the trench bottom (12), the local drainage unit is inclined towards the drainage direction of the trench body (1) so as to facilitate the drainage of underground water in the side slope.

8. The gutter structure for a subgrade slope according to claim 2, wherein: the local drainage unit is a prefabricated or later-punched drainage guide hole (2) in a ditch wall (11), and the drainage guide hole (2) is a through hole.

9. The gutter structure for a subgrade slope according to claim 8, wherein: the local drainage unit is a drainage pipe (3) arranged in the drainage hole (2), and the drainage pipe (3) is arranged in the drainage hole (2).

10. The gutter structure for a subgrade slope according to claim 9, wherein: and the two ends of the drain pipe (3) are provided with inverted filter layers (4).