CN218933167U - Roadbed slope protection structure in saline soil area - Google Patents

Abstract

The utility model relates to the technical field of roadbed slope protection devices, in particular to a roadbed slope protection structure in a saline soil area, which comprises a slope structure main body, wherein the slope structure main body is arranged on one side of a roadbed below a pavement, and the slope structure main body is obliquely arranged on one side, away from the roadbed; the slope structure comprises a slope structure main body, wherein the slope structure main body is provided with water permeable geotextile, and the upper surface of the water permeable geotextile is sequentially provided with a broken stone reinforcing layer, an erosion-resistant concrete layer and a water-resisting layer; according to the utility model, the water permeable geotechnical cloth, the broken stone reinforcing layer, the erosion resistant concrete layer, the water-resisting layer and the erosion resistant concrete grid are sequentially paved on the side slope structure main body, so that surface water seepage and underground water are effectively discharged through the paved drain pipe, the drain ditch, the reservoir and the drain ditch, and water accumulation is prevented from flowing into the side slope structure main body to cause water and soil loss, subsidence and salt expansion, and the side slope structure main body is effectively reinforced.

Description

Roadbed slope protection structure in saline soil area

Technical Field

The utility model relates to the technical field of roadbed slope protection devices, in particular to a roadbed slope protection structure in a saline soil area.

Background

At present, when a highway is built in a saline soil area, due to engineering characteristics of saline soil, diseases of a highway roadbed slope in the saline soil area are frequently generated, and great potential safety hazards are brought to normal running of vehicles.

Based on the defect, the prior patent number is CN217679182U, discloses a roadbed slope protection device based on microorganism induction salinization wind-accumulation sand area, through inserting a plurality of spacing bars on the side slope, can realize the transportation of microorganism, spacing bars and shower nozzle on the branch pipe can flow into the side slope inside with the microorganism solution and play the reinforcement effect, and the shower nozzle of spacing bars upper end can spray the microorganism solution on the side slope surface simultaneously, so as to consolidate and form the stereoplasm layer on side slope surface to further increase the fastness of whole side slope.

However, the drainage effect in the roadbed slope protection device is poor, accumulated water is easy to flow in the slope net layer in a rainy day, water and soil loss, subsidence and salt expansion occur, and the roadbed slope cannot be effectively reinforced.

Disclosure of Invention

The utility model aims to provide a roadbed slope protection structure for a saline soil area, which mainly solves the technical problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a saline soil area roadbed slope protection structure, includes the side slope structure main part, the side slope structure main part sets up the road bed one side of road surface below, the side slope structure main part is kept away from the slope one side setting of road bed;

the inclined surface of the side slope structure main body is provided with a permeable geotechnical cloth, the upper surface of the permeable geotechnical cloth is sequentially provided with a broken stone reinforcing layer, an erosion-resistant concrete layer and a water-resistant layer, the upper surface of the water-resistant layer forms a plurality of planting squares through an erosion-resistant concrete grid, the planting squares are arranged in a rectangular array, a reinforcing mesh is arranged at the bottom end of the inner wall of each planting square, and a greening layer is arranged at the top end of each reinforcing mesh and used for preventing soil in each planting square from sliding down and losing;

the anti-corrosion concrete grids are positioned on the left side and the right side of the planting square, water reservoirs are arranged at the bottom ends of the anti-corrosion concrete grids, and the bottoms of the water reservoirs are communicated with the water channels through water discharge holes;

the bottom of each row of planting square blocks is provided with a drainage ditch, and two ends of the drainage ditch are respectively communicated with the water reservoirs positioned at two sides of each planting square block;

a plurality of drainage pipes are arranged between the broken stone reinforcing layer and the erosion-resistant concrete layer side by side, one end of each drainage pipe extends to be flush with the upper surface of the pavement, and the other end of each drainage pipe extends to be communicated with the inner wall of the drainage canal.

Preferably, both ends of the drain pipe are respectively detachably provided with a filter plate.

Preferably, the inclination angle of the inclined surface of the slope structure main body and the horizontal plane is 45 degrees.

Preferably, the drain pipe is provided as an acid and alkali corrosion resistant plastic pipe or a PVC flower pipe.

Preferably, the water-resistant layer is set to be a composite geotextile, the upper layer and the lower layer of the composite geotextile are set to be non-woven water-permeable geotextile, and the middle layer of the composite geotextile is set to be a water-resistant soil working film.

Preferably, the drainage canal is concave structure, the drainage canal is kept away from one side of side slope structure main part is provided with the wall barrier, the bottom of wall barrier extends to the saline soil surface layer below, the top of wall barrier extends to the top on saline soil surface layer.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the water permeable geotechnical cloth, the broken stone reinforcing layer, the erosion resistant concrete layer, the water-resisting layer and the erosion resistant concrete grid are sequentially paved on the side slope structure main body, so that surface water seepage and underground water are effectively discharged through the paved drain pipe, the drain ditch, the reservoir and the drain ditch, and water accumulation is prevented from flowing into the side slope structure main body to cause water and soil loss, subsidence and salt expansion, and the side slope structure main body is effectively reinforced.

2. According to the utility model, saline-alkali resistant plants can be planted by arranging the planting square blocks, so that the method is attractive and environment-friendly, meets ecological requirements, and can prevent soil in the planting square blocks from sliding down and losing due to accumulated water, so that the side slope structural main body is further reinforced.

3. According to the utility model, by arranging the impervious wall, the infiltration path of precipitation and the like can be effectively prolonged, and the roadbed saline soil is prevented from sinking and deforming when meeting water; and effectively prevent the transfer of wind sand and surface water.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic side view of a roadbed slope protection mechanism in a saline soil area according to the present utility model;

FIG. 2 is a schematic plan view of the greening layer of FIG. 1 according to the present utility model;

in the figure: road surface 1, road bed 2, side slope structure main part 3, geotechnical cloth 4 permeates water, rubble reinforcement 5, drain pipe 6, anti erosion concrete layer 7, water barrier 8, greening layer 9, filter 10, water drainage canal 11, cut-off wall 12, water drainage canal 13, anti erosion concrete grid 14, cistern 15, reinforcing bar net 16, water drain hole 17.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-2, the utility model provides a slope protection mechanism for a roadbed 2 in a saline soil area, which comprises a slope structure main body 3, wherein the slope structure main body 3 is arranged on one side of the roadbed 2 below a pavement 1, and the slope structure main body 3 is obliquely arranged on one side away from the roadbed 2; the water permeable geotechnical cloth 4 is paved on the inclined surface of the side slope structure main body 3, the upper surface of the water permeable geotechnical cloth 4 is covered with the broken stone reinforcing layer 5, the erosion resistant concrete layer 7 is poured on the upper part of the broken stone reinforcing layer 5, meanwhile, a plurality of drain pipes 6 are paved between the broken stone reinforcing layer 5 and the erosion resistant concrete layer 7 side by side, and the gap between two adjacent drain pipes 6 is filled with erosion resistant concrete; then lay water-proof layer 8 on corrosion-resistant concrete layer 7 upper surface, water-proof layer 8 sets up to compound geotechnique's cloth, then pour into a plurality of planting squares through corrosion-resistant concrete grid 14 at water-proof layer 8 upper surface, a plurality of planting squares are rectangular array and arrange, and build one deck crisscross reinforcing bar net 16 at least in planting square's inner wall bottom, reinforcing bar net 16 and corrosion-resistant concrete grid 14 contact site are with galvanized iron wire ligature, then plant one deck saline and alkaline-resistant plant on reinforcing bar net 16's top, form greening layer 9, it is pleasing to the eye environmental protection not only, reach ecological requirement, can also avoid ponding to lead to planting square soil gliding and loss, consolidate side slope structure main part 3.

In the embodiment, the anti-erosion concrete grids 14 are positioned at the left side and the right side of the planting square, water reservoirs 15 are respectively poured at the left side and the right side of the planting square, drainage ditches 13 are reserved at the bottom of each row of planting square, and two ends of each drainage ditch 13 are respectively communicated with the water reservoirs 15 at the two sides; the bottom end of the erosion-resistant concrete grid 14 is horizontally poured with a concave drainage canal 11, and the bottom of the reservoir 15 is communicated with the inner wall of the drainage canal 11 through a water discharge hole 17; and, the one end of drain pipe 6 extends to the upper surface parallel and level with road surface 1, and the other end of drain pipe 6 extends to the inner wall intercommunication with water drainage canal 11 for earth's surface infiltration and groundwater are through the drain pipe 6 of laying, and water drainage canal 13, cistern 15 and water drainage canal 11 are effective to be discharged, prevent ponding inflow side slope structure main part 3 in, cause soil erosion and water loss, subsidence and salt expansion, thereby effectively consolidate side slope structure main part 3, can improve side slope structure main part 3 stability.

It should be noted that: the width of the drainage canal 11 in this embodiment is not less than 60cm, the depth is not less than 60cm, and simultaneously the slopes of the two sides of the top end of the drainage canal 11 are set to be 1:1.5, so that water flow can flow into the drainage canal 11 quickly, and the phenomenon that accumulated water permeates into the lower surface of a salty soil area is avoided.

Specifically, in order to prevent solid garbage, such as plastics, weeds and the like from blocking the drain pipe 6, the filter plates 10 are detachably mounted at two ends of the drain pipe 6 respectively, so that part of the solid garbage can be effectively prevented from flowing into the drain pipe 6 along with water flow, the filter plates 10 can be conveniently detached and cleaned at regular intervals, and the drain pipe 6 is dredged.

It should be noted that: the filter plate 10 of the present embodiment may be detachably mounted to the end of the drain pipe 6 by means of fasteners such as flange connections, screw connections or clamps.

Specifically, the inclined surface of the slope structure body 3 is set to have an inclined angle of 45 ° with respect to the horizontal plane.

Specifically, the drain pipe 6 is provided as an acid and alkali corrosion-resistant plastic pipe or a PVC flower pipe, which contributes to an improvement in the life cycle of the drain pipe 6.

Specifically, the upper layer and the lower layer of the composite geotextile are arranged to be nonwoven permeable geotextile, and the middle layer of the composite geotextile is arranged to be a waterproof geotextile film, so that the composite geotextile has certain acid and alkali corrosion resistance.

In the embodiment, the side of the drainage canal 11 far away from the side slope structural body 3 is provided with the impervious wall 12, the distance between the impervious wall 12 and the drainage canal 11 is more than 1m, and the bottom end of the impervious wall 12 extends to a certain depth below the saline soil surface layer, so that the infiltration path of precipitation and the like can be effectively prolonged, and the saline soil of the roadbed 2 is prevented from being deformed when encountering water; the top end of the impervious wall 12 extends to not lower than 50cm above the surface layer of the salty soil, so that the transfer of wind sand and surface water can be effectively prevented; the diaphragm wall 12 may be formed by high-pressure injection grouting, or by cement-soil mixing piles, plastic concrete continuous walls, grouting vertical diaphragm curtains or vertical grooving embedded high-density polyethylene films (HDPE films).

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (6)

1. The utility model provides a salinized soil area road bed side slope protective structure which characterized in that: the side slope structure comprises a side slope structure body (3), wherein the side slope structure body (3) is arranged on one side of a roadbed (2) below a pavement (1), and the side slope structure body (3) is obliquely arranged on one side far away from the roadbed (2);

the soil-less water-permeable planting device is characterized in that the inclined surface of the side slope structure main body (3) is provided with a water-permeable geotechnical cloth (4), the upper surface of the water-permeable geotechnical cloth (4) is sequentially provided with a broken stone reinforcing layer (5), an anti-erosion concrete layer (7) and a water-resisting layer (8), the upper surface of the water-resisting layer (8) forms a plurality of planting squares through an anti-erosion concrete grid (14), the planting squares are arranged in a rectangular array, the bottom end of the inner wall of each planting square is provided with a reinforcing mesh (16), and the top end of each reinforcing mesh (16) is provided with a greening layer (9) for preventing soil in the planting square from sliding down and losing;

the anti-erosion concrete grids (14) are positioned on the left side and the right side of the planting square, water reservoirs (15) are arranged at the bottom ends of the anti-erosion concrete grids (14), drainage channels (11) are arranged at the bottom ends of the anti-erosion concrete grids, and the bottoms of the water reservoirs (15) are communicated with the drainage channels (11) through water discharge holes (17);

the bottom of each row of planting square blocks is provided with a drainage ditch (13), and two ends of each drainage ditch (13) are respectively communicated with the water reservoirs (15) positioned at two sides of each planting square block;

a plurality of drain pipes (6) are arranged between the broken stone reinforcing layer (5) and the erosion-resistant concrete layer (7) side by side, one end of each drain pipe (6) extends to be flush with the upper surface of the pavement (1), and the other end of each drain pipe (6) extends to be communicated with the inner wall of the drainage channel (11).

2. The structure of claim 1, wherein: the two ends of the drain pipe (6) are respectively detachably provided with a filter plate (10).

3. The structure of claim 1, wherein: the inclination angle of the inclined surface of the side slope structure main body (3) and the horizontal plane is 45 degrees.

4. The structure of claim 1, wherein: the drain pipe (6) is arranged as an acid and alkali corrosion resistant plastic pipe or a PVC flower pipe.

5. The structure of claim 1, wherein: the waterproof layer (8) is arranged to be a composite geotextile, the upper layer and the lower layer of the composite geotextile are arranged to be non-woven permeable geotextile, and the middle layer of the composite geotextile is arranged to be a waterproof soil working film.

6. The structure of claim 1, wherein: the drainage canal (11) is concave structure, one side that drainage canal (11) kept away from side slope structure main part (3) is provided with wall cutoff (12), the bottom of wall cutoff (12) extends to the saline soil surface layer below, the top of wall cutoff (12) extends to the top on saline soil surface layer.

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