CN213836677U

CN213836677U - Ecological slope protection structure of continuous multistage gabion barricade of mountain area highway

Info

Publication number: CN213836677U
Application number: CN202022003095.6U
Authority: CN
Inventors: 苏超; 马煜钧; 张恒; 祝凡; 戴健健; 宋宁
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-07-30
Anticipated expiration: 2030-09-14

Abstract

The utility model provides a mountain highway continuous multistage gabion retaining wall ecological slope protection structure, which comprises a side slope, wherein a plurality of gravity type gabion retaining walls are distributed on the side slope in a step shape, and each gravity type gabion retaining wall comprises a plurality of layers of gabions and stones filled in the gabions; the top surface of the gravity type gabion retaining wall is provided with a vegetation groove, and nutrient soil is filled in the vegetation groove and is transplanted with turf shrubs. The utility model relates to a flexible retaining building is applicable to the relatively poor condition of ground condition, and the side slope platform of multistage gravity type gabion retaining wall structure department formation at the wall back of the body to and trapezoidal body gabion top surface has all increased the coverage area of nutrition soil, provides the space for the growth of plant, can promote the ecological restoration after the construction, reduce the influence of rainwash to side slope and gabion.

Description

Ecological slope protection structure of continuous multistage gabion barricade of mountain area highway

Technical Field

The utility model belongs to the technical field of the ecological restoration of side slope and specifically relates to an ecological slope protection structure of continuous multistage gabion barricade of mountain area highway is related to.

Background

Compared with plain areas, mountainous areas have more complex landforms, poorer geological conditions and more barren soil layers. The construction of mountain road must produce a large amount of side slopes, and the foundation bearing capacity descends for the engineering disturbance district that engineering excavation, blasting produced, and is unfavorable to the stability of side slope, and the environmental destruction phenomenon is showing, side slope ecological decline in the construction process, and the rubble abrupt slope that produces after the completion is difficult to afforest.

Traditional bank protection mode is mostly rib formula stone or cast in situ concrete bank protection etc. and original ecosystem has been destroyed to closed bank protection for vegetation resumes more difficultly, even carry out ecological improvement to these bank protection modes, lay the turf and set up the wash port drainage again on the bank protection, also can produce water and soil loss and drainage hole jam because of rainwash. The soil dressing layer on the slope is usually thin, the types of plants which can be planted are limited, and the slope ecology is fragile due to the unicity of the types of the plants, so that the slope ecological balance is difficult to maintain for a long time.

The existing gabion revetment only greens the wall back soil slope generally, but the gabion does not have a greening function. If the gabion is to be greened, generally, only protective pads are paved on the surface layer of the gabion, then plant seeds are sprayed, or the gap of stone materials inside the gabion is gradually filled with soil bodies, and some plants naturally grow. The former has high construction difficulty, high plant maintenance cost and low survival rate, and is difficult to be applied to large-scale slope protection engineering; the latter is long-lasting, has randomness, has no plant growth when the project is finished, and even if the plants grow out in the later period, the plants are usually uneven and uncontrollable in category, so that the ornamental value cannot be ensured.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides an ecological slope protection structure of continuous multistage gabion barricade of mountain area highway possesses and can draw materials on the spot, and ground strong adaptability is neat pleasing to the eye, can form better side slope ecological environment's advantage.

In order to solve the technical problem, the utility model provides a mountain highway continuous multistage gabion retaining wall ecological slope protection structure, which comprises a slope, wherein a plurality of gravity type gabion retaining walls are distributed on the slope in a step shape, and each gravity type gabion retaining wall comprises a plurality of layers of gabions and stones filled in the gabions; the top surface of the gravity type gabion retaining wall is provided with a vegetation groove, and nutrient soil is filled in the vegetation groove and is transplanted with turf shrubs.

Preferably, gravity type gabion retaining wall includes the three-layer gabion, follows supreme first layer gabion, second floor gabion, third layer gabion respectively down, gravity type gabion retaining wall sets up at domatic not co-altitude, and horizontal interval is 2~3.5 m.

Preferably, the third layer of gabion is a right-angle trapezoid body, the top surface of the third layer of gabion is obliquely arranged, the height of the outer side far away from the wall back is 0.7m, and the height of the inner side close to the wall back is 0.5 m.

Preferably, the vegetation groove is a trapezoidal vegetation groove, and the trapezoidal vegetation groove is defined by the top surface of the third layer of gabion, a side slope platform at the wall back and the side surface of the first layer of gabion.

Preferably, the particle size of the stone materials filled in the third layer of gabions is 15-30 cm, the stone materials are filled in a layered mode, and the filling particle size is gradually reduced from the bottom to the top.

Preferably, the gabion is made of a basalt fiber composite rib material.

Preferably, the side surfaces of the wall back, the top surface, the bottom surface and the bottom of the gravity type gabion retaining wall are respectively provided with reverse filtration geotextile, and the reverse filtration geotextile is connected with the gabion of the gravity type gabion retaining wall through steel wire twisting.

Preferably, the length of each gabion is 2m, transverse partition plates are arranged at the positions, 1m away from each other, inside the gabion, of the intervals, and the meshes of the gabion are regular hexagons with the side length of 5 cm.

Preferably, the depth of the nutrient soil filled in the plant growing groove is 15-20 cm, the transplanted turf shrubs are indigenous plants in the places of the side slopes, and the indigenous plants are herbaceous plants and low shrubs.

The utility model discloses the beneficial effect who reaches:

1. the utility model discloses a gravity type gabion retaining wall that comprises multilayer gabion, this kind of flexible construction can adapt to because the highway excavation leads to the side slope that the ground bearing capacity descends well.

2. The utility model discloses a gravity type gabion retaining wall that comprises multilayer gabion, the big particle diameter building stones in the gabion can form the macropore structure, have better water permeability, and under the heavy rainfall condition, this kind of macropore structure can effectively reduce domatic runoff, provides better growing environment for the vegetation.

3. The utility model discloses the third layer gabion is right angle trapezoidal body, and the top surface slope sets up, and the top surface is laid and is reversed strained geotechnological cloth, has enclosed into trapezoidal groove of planting jointly with the side slope platform of wall back department and the side of last one-level first layer gabion, and this kind of form has increased the thickness of nutrition soil, has extended the top surface width of nutrition soil, has richened the plant species that can plant, makes gabion and slope possess the afforestation function.

4. The utility model discloses under the rainfall condition that lasts, utilize the plant purification surface runoff in the trapezoidal groove of growing plants, utilize the building stones of granule structure and the anti-geotechnological cloth of straining on gabion surface to purify the subsurface runoff that infiltrates in the gabion, reduced soil erosion and to the pollution of highway side slope.

5. The utility model discloses formed the highway side slope ecological environment that has the sight, become local beautiful scenery one.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a three-dimensional schematic view of the gravity type gabion retaining wall of the present invention;

fig. 3 is a three-dimensional schematic view of a third layer gabion net cage of the present invention;

in the figure: 1. nutrient soil; 2. reversely filtering the geotextile; 3. turf and shrub; 4. a first layer of gabions; 5. a second layer of gabions; 6. a third layer of gabions; 7. a gravity type gabion retaining wall; 8. side slope; 41. a side surface; 42. a bottom surface; 61. a top surface; 62. a diaphragm plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-3, an ecological slope protection structure of continuous multistage gabion retaining wall of mountain road, including side slope 8, it has a plurality of gravity type gabion retaining walls 7 to be the echelonment distribution on side slope 8, gravity type gabion retaining wall 7 includes the three-layer gabion and fills the building stones in the gabion, from supreme first gabion 4, second gabion 5, third gabion 6 of being respectively down, gravity type gabion retaining wall 7 sets up at domatic different heights, according to slope height and the slope ratio design gravity type gabion retaining wall 7's at different levels position, guarantees that the horizontal interval between every gravity type gabion retaining wall 7 is between 2~3.5 m. The third gabion 6 is a right-angle trapezoid body, the top surface of the third gabion is obliquely arranged, the height of the outer side, far away from the wall back, is 0.7m, and the height of the inner side, close to the wall back, is 0.5 m. The grain size of stone materials filled in the third gabion 6 is 15-30 cm, the stone materials are filled in a layered mode, and the filling grain size is gradually reduced from the bottom to the top.

The gabion is made of basalt fiber composite rib materials. The side of the wall back, top surface, bottom surface and bottom of gravity type gabion retaining wall 7 is equipped with anti geotechnological cloth 2 of straining respectively, it is connected through the steel wire transposition between geotechnological cloth 2 of straining and the gabion of gravity type gabion retaining wall 7 to prevent. The length of the gabion is 2m, transverse partition plates 62 are arranged at the position, 1m away from the inside of the gabion, of the interval, and the meshes of the gabion are regular hexagons with the side length of 5 cm.

The top surface of the gravity type gabion retaining wall 7 is provided with a trapezoidal vegetation groove which is defined by a third layer gabion top surface 61, a side slope platform at the wall back and a side surface 41 of a first layer gabion 4, the vegetation groove is filled with nutrient soil 1 and transplanted with turf shrubs 3. The maximum depth of the nutrient soil 1 filled in the plant growing groove is 15-20 cm, the transplanted turf shrubs 3 are indigenous plants in the places of the side slopes 8, and the indigenous plants are herbaceous plants and low shrubs.

The construction method comprises the following steps: carry out the clearance of side slope 8 to according to the design data, excavate into the notch cuttype with side slope 8, at the dark basis of 1.5m wide 1m of toe excavation, the foundation ditch as first order gravity type gabion retaining wall 7 after the flattening is tamped, every grade of step on the side slope 8 all excavates the dark basis of 1.5m wide 0.3m at the design position, rolls the foundation ditch as multistage gravity type gabion retaining wall 7 after closely knit. The reverse filtration geotextile 2 is laid in the foundation pit in advance, then gabion cages are assembled layer by layer and filled with stones, and the side surfaces 41 of the gabions and the wall backs of the cages are connected with the reverse filtration geotextile 2 in advance in a steel wire twisting mode.

The gabion net cage adopts an assembly mode of on-site splicing, the net cage panels are connected through prefabricated spiral buckles, adjacent gabions are fixed through binding, and stone materials begin to be filled after the gabion net cages in the same row are connected and fixed. The gabion filler is firm, compact and weatherproof stone with the diameter not smaller than 15cm, step filling is adopted, the filling height difference of adjacent gabions in the same row does not exceed 30cm, and deformation of a single gabion is prevented.

The third layer of gabion 6 is filled with layered filler, the bottom of the third layer of gabion 6 is filled with stones with larger grain sizes, the top of the third layer of gabion 6 is filled with stones with smaller grain sizes, the stones are guaranteed to be attached to the trapezoid gabion, the stones around the gabion are selected from relatively flat stones, the large faces of the stones face outwards, the gabion is guaranteed to be neat and attractive, and the reverse filter geotextile 2 is laid on the top surface 61 of the third layer of gabion 6 in advance.

Backfill materials are obtained by excavating side slopes 8, and after backfilling is finished, a side slope platform behind a wall is flush with the lowest side of the trapezoid body of the third-layer gabion 6.

And (3) filling nutrient soil 1 into a trapezoidal planting groove surrounded by the top surface 61 of the third-layer gabion, a side slope platform at the back of the wall and the side surface 41 of the first-layer gabion 4 at the upper stage, and transplanting turf shrubs 3 growing at the position of the side slope 8.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The ecological slope protection structure is characterized by comprising a side slope (8), wherein a plurality of gravity type gabion retaining walls (7) are distributed on the side slope (8) in a step shape, and each gravity type gabion retaining wall (7) comprises a plurality of layers of gabions and stones filled in the gabions; the top surface of the gravity type gabion retaining wall (7) is provided with a vegetation groove, and nutrient soil (1) is filled in the vegetation groove and is transplanted with turf shrubs (3).

2. The ecological slope protection structure of the continuous multistage gabion retaining wall of the mountain road as claimed in claim 1, wherein the gravity type gabion retaining wall (7) comprises three layers of gabions, namely a first layer gabion (4), a second layer gabion (5) and a third layer gabion (6) from bottom to top respectively, the gravity type gabion retaining wall (7) is arranged on the slope at different heights, and the horizontal distance is 2-3.5 m.

3. The ecological slope protection structure of the mountain road continuous multistage gabion retaining wall as claimed in claim 2, wherein the third layer of gabion (6) is a right angle trapezoid with an inclined top surface, the height of the outer side far from the wall back is 0.7m, and the height of the inner side near the wall back is 0.5 m.

4. The ecological slope protection structure of the continuous multistage gabion retaining wall in the mountain road as claimed in claim 2, wherein the vegetation groove is a trapezoidal vegetation groove, and the trapezoidal vegetation groove is defined by the top surface of the third layer of gabion (6), a side slope platform at the wall back and the side surface of the first layer of gabion (4) at the upper stage.

5. The ecological slope protection structure of the mountain road continuous multistage gabion retaining wall as claimed in claim 2, wherein the grain size of the stones filled in the third layer of gabions (6) is 15-30 cm, and the stones are filled in layers, and the filling grain size is gradually reduced from bottom to top.

6. The ecological slope protection structure of the mountain road continuous multistage gabion retaining wall, as claimed in claim 1, wherein the gabion is made of basalt fiber composite rib material.

7. The ecological slope protection structure for the mountain road continuous multistage gabion retaining wall as claimed in claim 1, wherein the side surfaces of the wall back, the top surface, the bottom surface and the bottom of the gravity type gabion retaining wall (7) are respectively provided with a reversed filtering geotextile (2), and the reversed filtering geotextile (2) is connected with the gabion of the gravity type gabion retaining wall (7) through steel wire twisting.

8. The ecological slope protection structure of the mountain road continuous multistage gabion retaining wall as claimed in claim 1, wherein the length of each gabion is 2m, transverse partition plates (62) are arranged at 1m intervals inside the gabion, and meshes of the gabion are regular hexagons with side length of 5 cm.

9. The ecological slope protection structure for the mountain road continuous multistage gabion retaining wall according to claim 1, wherein the depth of the nutrient soil (1) filled in the vegetation groove is 15-20 cm, the transplanted turf shrubs (3) are native plants at the location of the side slope (8), and the native plants are herbaceous plants and low shrubs.