CN214573024U

CN214573024U - Highway subgrade water-proof and drainage system of water system development low-lying section

Info

Publication number: CN214573024U
Application number: CN202120549542.XU
Authority: CN
Inventors: 张玉广; 张国发; 彭小勇; 吁燃; 邹启民
Original assignee: Guizhou Transportation Planning Survey and Design Academe Co Ltd
Current assignee: Guizhou Transportation Planning Survey and Design Academe Co Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-11-02
Anticipated expiration: 2031-03-17

Abstract

The utility model discloses a highway subgrade water-proof and drainage system of a water system development low-lying section, which comprises a subgrade and natural slopes on two sides of the subgrade, wherein the subgrade consists of a fill subgrade and fill subgrade side slopes on two sides of the fill subgrade, a plurality of drainage channels I for collecting water on a road surface and guiding the water downwards are arranged on the slope surface of the fill subgrade side slopes, drainage ditches I are arranged on the slope feet on two sides of the fill subgrade side slopes, the drainage channels I are connected with the drainage ditches I, water-blocking ditch side walls along the longitudinal direction of the subgrade are arranged on the outer sides of the drainage ditches I, and a drainage ditch II for forming a mountain foot is arranged between the water-blocking ditch side walls and the natural slopes; the utility model discloses the highway subgrade that can solve low-lying district receives the water for a long time and soaks the problem of softening, ground body shear strength reduction.

Description

Highway subgrade water-proof and drainage system of water system development low-lying section

Technical Field

The utility model relates to a highway subgrade water prevention and drainage system in low-lying district is developed to water system belongs to highway subgrade drainage technical field.

Background

The highway subgrade in the mountain area is limited by the line type and the topographic condition, the filling subgrade is usually arranged in the low-lying area of the mountain area, the topographic form of the mountain area is continuous and fluctuated, and surface water develops and is collected in the low-lying area.

The highway subgrade is the foundation of the road surface, bears the dead weight of the soil body and the weight of the road surface structure, and simultaneously bears the driving load transmitted by the road surface, so the subgrade has enough strength and stability, i.e. the subgrade does not have overlarge settlement deformation and slippage damage under the action of the dead weight and the dynamic and static loads of vehicles. The filled roadbed is generally filled with soil and stones, the roadbed is soaked and eroded by water for a long time, filled soil bodies and soft rock fillers are easy to soften when meeting water, the shear strength of rock and soil bodies such as cohesive force c, internal friction angle phi and other physical and mechanical parameters is reduced, the filled roadbed is caused to have uneven settlement and deformation, road surface collapse, slurry leakage, mud gushing and the like, and the overall slippage damage is generated if the shear strength is serious.

At present, a common drainage design is that a drainage ditch is arranged at a slope toe for draining water collected by a roadbed and a road surface, the water collected by the roadbed and the natural catchment are respectively guided without combining the catchment condition of a natural slope, the rainfall amount is large in a flood season, the catchment of a natural slope body of a water system development section is large, and the roadbed is easy to suffer from diseases such as uneven settlement deformation, pavement collapse, cracking and the like due to the fact that most of low-lying section roadbeds are soaked by rainwater for a long time.

Therefore, a highway subgrade waterproof and drainage system for a low-lying section in phylogenetic development is needed, and the problem that the shear strength of rock-soil mass is reduced due to the fact that the highway subgrade in the low-lying section is soaked and softened by water for a long time can be solved.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a highway subgrade waterproof and drainage system in a water system development low-lying area, which can solve the problems that the highway subgrade in the low-lying area is soaked and softened by water for a long time and the shear strength of rock-soil bodies is reduced; the defects of the prior art can be overcome.

The technical scheme of the utility model is that: the utility model provides a highway subgrade water-proof and drainage system of low-lying district section is developed to river system, it includes the natural slope of subgrade and subgrade both sides, the subgrade comprises the fill subgrade side slope of fill subgrade and fill subgrade both sides, sets up many drainage channels I that are used for catchmenting the water conservancy diversion downwards with the road surface at the domatic of fill subgrade side slope, is equipped with escape canal I at fill subgrade side slope both sides toe, drainage channel I is connected with escape canal I, all is provided with the water blocking ditch group of following the subgrade lengthwise direction in the outside of escape canal I, water blocking ditch group II who constitutes the step between water blocking ditch group and the natural slope.

The slope surface of the natural slope is uniformly provided with drainage grooves II towards the direction of the filling roadbed, and the drainage grooves II are connected into drainage ditches II.

The middle part of the roadbed of the ultrahigh road section outside the filling roadbed is provided with a central separation belt drainage system, the central separation belt drainage system comprises a water collection tank and a transverse drainage pipe, the water collection tank is longitudinally arranged along a route, and an outlet of the transverse drainage pipe is connected with a drainage tank I on the slope surface of the filling side slope.

The water blocking ditch side is of a wedge-shaped structure.

Compared with the prior art, the utility model discloses highway subgrade water-proof and drainage system of water system development low-lying district, it includes the natural slope of road bed and road bed both sides, the road bed comprises fill road bed and fill road bed side slope of fill road bed both sides, sets up many drainage channels I that are used for catchment the water diversion downwards in the domatic of fill road bed side slope, is equipped with escape canal I at fill road bed side slope both sides toe, drainage channel I is connected with escape canal I, all is provided with the water blocking ditch group along the road bed lengthways direction in the outside of escape canal I, constitute the escape canal II of mountain foot between water blocking ditch group and the natural slope; when the structure is used, water collected on a road subgrade pavement and a fill slope surface is drained into the toe drainage ditch I through the drainage groove I, the water blocking ditch helps to separate the two rows of water ditches, and a large amount of mountain bodies naturally collect water and enter the fill subgrade due to unsmooth drainage when rainfall is overlarge, so that a series of problems that water flows erode the road subgrade to soften a fill body and a base and fine-grained fill of the toe is taken away by water are avoided, the damage of water to the road subgrade can be effectively prevented, the stability of the road subgrade is improved, the uneven settlement of the subgrade is reduced, and the service life of the road subgrade and the pavement is prolonged.

The domatic equipartition of natural slope is equipped with drainage tank II to fill roadbed direction, drainage tank II inserts escape canal II, can concentrate through drainage tank II drainage gullies II into slope toe escape canal II through the domatic catchment of nature and secret immersion water like this.

The middle part of the roadbed is provided with a central separation belt drainage system at the ultrahigh road section outside the filling roadbed, the central separation belt drainage system comprises a water collection tank and a transverse drainage pipe, the water collection tank is longitudinally arranged along a route, and the outlet of the transverse drainage pipe is connected with a drainage tank I on the slope surface of a filling side slope; the water stopping ditch side is of a wedge-shaped structure; this is advantageous in directing water out to both ends of the depression.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is the utility model discloses well fill road bed superelevation highway section road surface drainage sketch map.

Fig. 3 is a schematic structural view of the middle water retaining ditch side of the utility model.

Wherein, the roadbed 1; a natural slope 2; filling the roadbed 3; filling the roadbed side slope 4; 5-1 of a drainage groove I; 5-2 parts of a drainage groove; a drainage ditch II I6-1; a drainage ditch II 6-2; a water stopping ditch side 7; a central dividing belt drainage system 8; a water collection tank 9; a transverse drain pipe 10.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.

Embodiment 1. as shown in fig. 1, a highway subgrade waterproof and drainage system of a water system development low-lying area comprises a subgrade 1 and natural slopes 2 on two sides of the subgrade 1, wherein the subgrade 1 consists of a filling subgrade 3 and filling subgrade side slopes 4 on two sides of the filling subgrade 3, a plurality of drainage channels I5-1 for guiding water collected by a road surface downwards are arranged on the slope surfaces of the filling subgrade side slopes 4, drainage channels I6-1 are arranged on slope feet on two sides of the filling subgrade side slopes 4, the drainage channels I5-1 are connected with the drainage channels I6-1, water blocking channel walls 7 along the longitudinal direction of the subgrade are arranged on the outer sides of the drainage channels I6-1, and drainage channels II 6-2 of mountain feet are formed between the water blocking channel walls 7 and the natural slopes 2.

Drainage grooves II 5-2 towards the direction of the filling roadbed 3 are uniformly distributed on the slope surface of the natural slope 2, and the drainage grooves II 5-2 are connected to drainage ditches II 6-2; a central separation belt drainage system 8 is arranged in the middle of the roadbed at the ultrahigh road section outside the filling roadbed 3, the central separation belt drainage system 8 comprises a water collection tank 9 and a transverse drainage pipe 10, the water collection tank 9 is longitudinally arranged along a route, and the outlet of the transverse drainage pipe 10 is connected with a drainage tank I5-1 of a filling side slope surface; the water stopping ditch side 7 is of a wedge-shaped structure.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a highway subgrade waterproof and drainage system of water system development low-lying district, it includes natural slope (2) of subgrade (1) and subgrade (1) both sides, subgrade (1) comprises fill subgrade (3) and fill subgrade side slope (4) of fill subgrade (3) both sides, its characterized in that: many drainage channels I (5-1) that are used for catchmenting the road surface downwards water conservancy diversion are arranged at the domatic of fill road bed side slope (4), are equipped with escape canal I (6-1) at fill road bed side slope (4) both sides toe, drainage channel I (5-1) is connected with escape canal I (6-1), all is provided with in the outside of escape canal I (6-1) along the long direction's of roadbed ditch group (7), constitute the escape canal II (6-2) of toe between water blocking ditch group (7) and natural slope (2).

2. The road bed water-proof and drainage system for water system development low-lying area according to claim 1, characterized in that: and drainage grooves II (5-2) towards the filling roadbed (3) are uniformly distributed on the slope surface of the natural slope (2), and the drainage grooves II (5-2) are connected into drainage ditches II (6-2).

3. The road bed water-proof and drainage system for water system development low-lying area according to claim 1, characterized in that: a central separation belt drainage system (8) is arranged in the middle of the roadbed at the ultrahigh road section outside the filling roadbed (3), the central separation belt drainage system (8) comprises a water collection tank (9) and a transverse drainage pipe (10), the water collection tank (9) is longitudinally arranged along a route, and an outlet of the transverse drainage pipe (10) is connected with a drainage tank I (5-1) on the slope surface of the filling side slope.

4. The road bed water-proof and drainage system for water system development low-lying area according to claim 1, characterized in that: the water blocking ditch side (7) is of a wedge-shaped structure.