Water-saving root planting type ecological grid slope protection structure

Abstract

The utility model provides a water-saving root planting type ecological grid slope protection structure. The water-saving root planting type ecological grid slope protection structure comprises a slope fixing layer, a root system soil layer, a seedling culture base material layer, an ecological restoration planting pad and geogrid wing grooves. The slope fixing layer covers the slope surface of the side slope, and anchor rods are buried on the slope surface at intervals; an inner steel wire mesh layer is hung on the group of anchor rods; the geogrid wing grooves are hung on the transversely arranged anchor rods, the longitudinal sections of the geogrid wing grooves are U-shaped, and the openings of the geogrid wing grooves face upwards; root system soil layers are sprayed in spaces among the geogrid wing grooves and in the geogrid wing grooves; the ecological restoration planting pad is fixed on the outer side of the root system soil layer; an outer steel wire mesh layer is hung on the outer side of the ecological restoration planting pad; the seedling raising base material layer is sprayed on the interior and the outer surface of the ecological restoration planting pad; and vegetation is planted on the seedling substrate layer. The vegetation protection slope solves the technical problems that according to a traditional vegetation protection slope, water needed by vegetation growth is insufficient in a place lacking water resources, the survival rate of plants is low, and the slope protection effect is not ideal.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of slope reinforcement, particularly to a water-saving rooted ecological grid slope protection structure. BACKGROUND

[0002] Traditional slope protection structures are mostly made of hard materials such as concrete and stone. Although such slope protection structures have certain stability, they lack ecological properties and are prone to problems such as bare slope surface and difficult vegetation growth under the action of natural factors such as rainwater erosion, sunlight and weathering, further aggravating water and soil loss. In order to solve these problems, in recent years, vegetation-covered slope protection technology has emerged, which uses vegetation to cover the slope surface to improve the protection capacity. Although the vegetation-covered slope protection has better solved the ecological restoration problem, in arid areas or places with scarce water resources, the vegetation growth often faces the problem of insufficient water, resulting in low plant survival rate and unsatisfactory slope protection effect.

[0003] Therefore, how to combine ecological protection and water-saving design to create a slope protection structure that can ensure the healthy growth of plants and effectively save water resources has become an important topic in the current slope protection technology research. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide a water-saving rooted ecological grid slope protection structure, and solves the technical problem that the traditional vegetation-covered slope protection in arid areas or places with scarce water resources often faces the problem of insufficient water for vegetation growth, resulting in low plant survival rate and unsatisfactory slope protection effect.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions.

[0006] The utility model provides a water -saving type rooted ecological grid protection slope structure, including solid slope layer, root system soil layer and seedling substrate layer, still including ecological restoration planting pad and earthwork grid wing groove, the solid slope layer covers on the slope surface of side slope, and is interval buried with anchor rod on the slope surface, the outer end of anchor rod exceeds the outer surface of solid slope layer, and is hung in a group with inside steel wire mesh layer on anchor rod, and inside steel wire mesh layer covers in the outside of solid slope layer, the earthwork grid wing groove is hung on the anchor rod of transverse arrangement, the longitudinal section of earthwork grid wing groove is U type, and the opening of earthwork grid wing groove faces upward, and the earthwork cloth is laid in earthwork grid wing groove, and the anchor rod passes through the both sides groove wall of earthwork grid wing groove, and the root system soil layer is sprayed in the space between earthwork grid wing groove and the outside of inside steel wire mesh layer and the groove of earthwork grid wing groove, the outer surface of root system soil layer exceeds the outer surface of earthwork grid wing groove, the ecological restoration planting pad is fixed in the outside of root system soil layer, including upper layer tensile net, lower layer tensile net and the support layer between upper layer tensile net and lower layer tensile net, and is hung with outside steel wire mesh layer in the outside of ecological restoration planting pad, the seedling substrate layer is sprayed on the inside and the outer surface of ecological restoration planting pad, and is planted with vegetation on the seedling substrate layer.

[0007] Preferably, the anchor rods are arranged in a matrix, each anchor rod has a diameter of not less than 20 mm, and the angle between the anchor rod and the horizontal plane is 20-30°.

[0008] Preferably, the inside steel wire mesh layer is a PP plastic-coated steel wire mesh, and the inside steel wire mesh layer is connected to the anchor rod by welding or binding.

[0009] Preferably, the earthwork grid wing groove is made of high-strength tensile grid, the grid mesh in the earthwork grid wing groove has a side length of 30-160 mm, the upper opening width of the earthwork grid wing groove is not less than 150 mm, and the height of the earthwork grid wing groove is not less than 150 mm.

[0010] Preferably, the upper layer tensile net and the lower layer tensile net each have a mesh side length of not less than 2.5 mm, the support layer has a height of not less than 30 mm, and the thickness between the upper layer tensile net and the lower layer tensile net is greater than 30 mm.

[0011] Preferably, the outside steel wire mesh layer is a PP plastic-coated steel wire mesh, and the outside steel wire mesh layer is connected to the anchor rod by welding or binding.

[0012] Preferably, the water-saving irrigation system includes a drip irrigation pipeline and a permeation pipeline, the drip irrigation pipeline is arranged outside the seedling substrate layer, and the permeation pipeline is buried in the seedling substrate layer.

[0013] Compared with the prior art, the utility model has the following characteristics and beneficial effects.

[0014] 1. The water-saving root-planting ecological grid slope protection structure of the utility model aims to combine advanced grid technology with ecological plant root systems, thereby not only enhancing slope protection capacity but also effectively improving water and soil conservation capacity and reducing water resource waste, and is suitable for slope protection construction in the fields of rivers, slopes and highways. The slope protection structure adopts modular design, and each component part can be conveniently assembled and disassembled, which is conducive to construction and later maintenance. Meanwhile, the matrix arrangement of anchor rods and the U-shaped design of the wing groove of the geogrid also facilitate positioning and fixing during construction.

[0015] 2. The ecological grid slope protection structure of the utility model combines a slope fixing layer, anchor rods, an inner steel wire mesh layer and an outer steel wire mesh layer to form a stable slope protection structure, which can effectively prevent landslides and collapse of the slope and prevent soil loss and improve the stability of the slope. In addition, the root soil layer and the seedling substrate layer provide a good growth environment for vegetation, the root soil layer can fix soil and prevent soil loss while providing nutrients required by vegetation, and the seedling substrate layer further promotes the growth and reproduction of vegetation and increases the greening coverage rate of the slope.

[0016] 3. The design of the ecological restoration planting mat in the utility model provides a more stable growth platform for vegetation through the combination of the upper tensile net, the lower tensile net and the support layer. Meanwhile, the use of the geogrid wing groove and the geotextile is conducive to the fixation of soil and vegetation and further improves the effect of ecological restoration. The introduction of the water-saving irrigation system, including the drip irrigation pipeline and the infiltration pipeline, can realize precise irrigation of vegetation and reduce water resource waste. The drip irrigation pipeline can directly deliver water to the root of the vegetation, and the infiltration pipeline can ensure that the soil maintains appropriate humidity and provides necessary water for the growth of vegetation. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in detail in combination with the drawings.

[0018] Fig. 1 is the schematic view of the water-saving root-planting ecological grid slope protection structure of the utility model.

[0019] Fig. 2 is the structural schematic view of the utility model in which the geogrid wing groove is arranged outside the inner steel wire mesh layer.

[0020] Fig. 3 is the structural layer schematic view of the water-saving root-planting ecological grid slope protection structure of the utility model.

[0021] Reference signs: 1 - slope fixing layer, 2 - root soil layer, 3 - seedling substrate layer, 4 - ecological restoration planting mat, 4.1 - upper tensile net, 4.2 - lower tensile net, 4.3 - support layer, 5 - geogrid wing groove, 6 - anchor rod, 7 - inner steel wire mesh layer, 8 - outer steel wire mesh layer. DETAILED DESCRIPTION

[0022] As Figs. 1-3 shown, the water-saving rooted ecological grid slope protection structure comprises a slope fixing layer 1, a root soil layer 2 and a seedling substrate layer 3; characterized in that it further comprises an ecological restoration planting pad 4 and a geogrid wing groove 5; the slope fixing layer 1 is covered on the slope surface of the slope, and anchor rods 6 are buried on the slope surface at intervals; the outer ends of the anchor rods 6 exceed the outer surface of the slope fixing layer 1; an inner steel wire mesh layer 7 is hung on a group of anchor rods 6, and the inner steel wire mesh layer 7 is laid on the outer side of the slope fixing layer 1; the geogrid wing groove 5 is hung on the transversely arranged anchor rods 6, the longitudinal section of the geogrid wing groove 5 is in the shape of U, and the opening of the geogrid wing groove 5 faces upward; geotextile is laid in the geogrid wing groove 5, the geotextile is long-fiber PP geotextile, and the geotextile is ≥100 g / m 2 , effectively preventing soil loss in and above the groove and providing sufficient nutrient components and growth space for plant roots; the anchor rods 6 pass through the groove walls of the geogrid wing groove 5; the root soil layer 2 is sprayed on the outer side of the inner steel wire mesh layer 7, the space between the geogrid wing grooves 5 and the grooves of the geogrid wing grooves 5; the outer surface of the root soil layer 2 exceeds the outer surface of the geogrid wing groove 5; the ecological restoration planting pad 4 is fixed on the outer side of the root soil layer 2 and comprises an upper tensile net 4.1, a lower tensile net 4.2 and a support layer 4.3 between the upper tensile net 4.1 and the lower tensile net 4.2; an outer steel wire mesh layer 8 is hung on the outer side of the ecological restoration planting pad 4; the seedling substrate layer 3 is sprayed on the inner part and the outer surface of the ecological restoration planting pad 4; and vegetation is planted on the seedling substrate layer 3.

[0023] In this embodiment, the slope fixing layer 1 is prepared by mixing cement, clay, glass fiber and soil fixing glue with water to form a slurry, and the slurry is sprayed on the slope surface with a spraying thickness less than 1 cm; the mass ratio of cement, clay, glass fiber and soil fixing glue is 38:58:2:2. The design of the slope fixing layer 1 enables the high adhesion of the rock slope surface layer and the sprayed artificial soil, solves the key technical problem of high adhesion of rock and soil, and creates a certain rough surface on the surface of the slope fixing layer 1 for the survival space of plants and prevents the loss of substrate.

[0024] Of course, in other embodiments, the mass ratio of cement, clay, glass fiber and soil fixing glue can be selected in the range of 30-50:50-70:1-5:1-5.

[0025] In this embodiment, the anchor rods 6 are arranged in a matrix, and the distance between adjacent anchor rods 6 is 1 m x 1 m; the diameter of each anchor rod 6 is not less than 20 mm, the included angle between the anchor rod 6 and the horizontal plane is 20°-30°, and preferably 30°; the anchor rod 6 is a steel anticorrosion anchor rod, the length is 600 mm-1500 mm, the distance between adjacent anchor rods 6 is 1 m x 1 m, and can also be determined according to the slope of the slope surface, the size of the geogrid wing groove 5, etc. The anchor rod hole position is accurately measured and laid out on the slope surface according to requirements, drilling equipment is used to drill holes at the anchor rod hole position, the length of the part of the anchor rod 6 buried in the slope body is ensured to be not less than 10 mm, and the end parts of all the anchor rods 6 exposed outside the slope surface are connected to form a smooth transition surface; preferably, the surface is a plane and is parallel to the slope surface. The anchor rod 6 can be made of φ20 threaded steel bars, and before installation, it is ensured that each anchor rod 6 is straight, the anchor rod 6 is slowly put into the hole by hand, the length of the part of the anchor rod 6 exposed outside the hole is measured by a steel ruler, and the anchoring length is ensured.

[0026] In this embodiment, the inner steel wire mesh layer 7 uses a PP plastic wrapped steel wire hook mesh to have corrosion resistance, a long service life, and environmental protection; and is welded or tied between the inner steel wire mesh layer 7 and the anchor rod 6. The connection is tied or spot welded with thin iron wire to prevent the first plastic coated steel wire hook mesh from shaking during subsequent spray seeding and nutrient soil. When the first plastic coated steel wire hook mesh is installed, it is straightened before being made to ensure construction quality.

[0027] In this embodiment, the geogrid wing groove 5 is made of high-strength tensile grid, the grid mesh in the geogrid wing groove 5 has a side length of 30-160 mm, the tensile strength of the single wire in the grid mesh is greater than 1000 N, the upper width of the geogrid wing groove 5 is not less than 150 mm, and is preferably less than or equal to 600 mm, and the U-shaped groove height is not less than 150 mm.

[0028] In this embodiment, the mesh hole side length of the upper layer tensile net 4.1 and the lower layer tensile net 4.2 is not less than 2.5 mm, the tensile strength is greater than or equal to 120 N / m, the height of the support layer 4.3 is not less than 30 mm, and the thickness between the upper layer tensile net 4.1 and the lower layer tensile net 4.2 is greater than 30 mm, so that the upper layer tensile net 4.1 and the lower layer tensile net 4.2 form a space with a certain height, provide space for artificial nutrient soil and seedling substrate, make them have strong stability in the space, so that the roots of plants are completely wrapped with the upper layer tensile net, the lower layer tensile net, the support layer, and the artificial nutrient soil and seedling substrate, and the slope is further stabilized.

[0029] In the embodiment, the outer steel wire mesh layer 8 adopts a PP plastic wrapped steel wire hook mesh to have corrosion resistance, long service life and green environmental protection; the outer steel wire mesh layer 8 is welded or tied with the anchor rod 6. The connection is tied or spot welded with a thin iron wire to prevent the outer steel wire mesh layer 8 from shaking during subsequent spray seeding of the nutrient soil. When the outer steel wire mesh layer 8 is installed, it is straightened before being made to ensure the construction quality. The tying member for fixing the outer steel wire mesh layer 8 is also a corrosion-resistant fixing member. The outer steel wire mesh layer 8 fixes the ecological restoration planting mat 4, the geogrid wing groove 5, the artificial nutrient soil and the roots of the green vegetation on the slope, prevents the artificial nutrient soil and the green vegetation from loosening and falling off on the slope, and provides a stable guarantee for plant growth.

[0030] In the embodiment, a water-saving irrigation system is further included; the water-saving irrigation system includes a drip irrigation pipeline and a permeation pipeline; the drip irrigation pipeline is arranged outside the seedling substrate layer 3, and the permeation pipeline is embedded in the seedling substrate layer 3. The drip irrigation, permeation pipeline and other technologies adopt existing technologies, and water is uniformly supplied to the vegetation through the water pipeline distribution embedded in the grid structure. The design of the irrigation system can accurately control the water quantity and avoid waste of water resources. The seedling substrate layer 3 includes planting soil, water, organic fertilizer, plant fiber, ecological glue, grass, tree and shrub seeds and the like. The seedling substrate layer 3 is selected according to the local soil quality, and preferably, vegetation with strong stress resistance, acid and alkali resistance, barren resistance and less disease and insect pests is selected, for example, the golf dream and false indigo bush mixed seeding with strong disease resistance can be used.

[0031] In the embodiment, the spray thickness of the root soil layer 2 on the slope surface is equal to or slightly higher than the surface of the geogrid wing groove 5, so as to cover the geogrid wing groove 5. Preferably, the soil in the root soil layer 2 is artificial nutrient soil, which can be purchased or prepared, and includes soil, water, organic fertilizer, plant fiber, ecological glue and water retaining agent. The plant fiber and the ecological glue can not only loosen the soil, but also firmly bond on the slope surface, so that the plant roots can quickly take root; the water retaining agent can protect the soil moisture, reduce evaporation and solve the problem that the plant roots absorb less water due to less maintenance water spraying; the ecological glue and the water retaining agent are green and environmentally friendly substances and are naturally degraded in the soil for 2-3 years. In the process, the artificial nutrient soil is sprayed from top to bottom into the U-shaped geogrid wing groove and between the upper and lower U-shaped geogrid wing grooves by the high-pressure air as the power. When the sprayed surface is straight, the spiral motion is repeated and slow, and the spiral diameter is about 20-30 cm to ensure that the artificial nutrient soil is sprayed densely.

[0032] In the embodiment, a covering net is laid on the outer surface of the outer steel wire mesh layer 8, and water is sprayed for curing, so as to prevent the sprayed seedling substrate from being washed away by rain and prevent water evaporation. The covering net can be a polyethylene woven net. After the sprayed seedling substrate layer 3 is finally cured for 2 hours, water is sprayed for curing (water spraying is not allowed when the air temperature is lower than 5°C, and the curing time is not less than 14 days). Water is sprayed in mist form once a day, and water is sprayed in mist form once every 10 days after the plants germinate. When the air humidity around reaches or exceeds 85%, natural curing can be performed. After a period of curing, green vegetation can be produced on the high and steep bare rock slope, and the vegetation is covered with trees, shrubs or grasses, so as to stabilize the slope and beautify the environment.

[0033] The above embodiments are not exhaustive of the specific embodiments, and other embodiments can also be provided. The above embodiments are intended to illustrate the present application, but not to limit the protection scope of the present application. All applications derived from simple changes of the present application fall within the protection scope of the present application.

Claims

1. A water-saving rooted ecological grid revetment structure, comprising a slope-fixing layer (1), a root soil layer (2) and a seedling substrate layer (3); characterized in that: The ecological restoration planting pad (4) and the geogrid wing groove (5) are further included; the slope fixing layer (1) is covered on the slope surface of the slope, and the anchor rod (6) is arranged on the slope surface at intervals; the outer end of the anchor rod (6) is beyond the outer surface of the slope fixing layer (1); the inner steel wire mesh layer (7) is hung on a group of anchor rods (6), and the inner steel wire mesh layer (7) is covered on the outer side of the slope fixing layer (1); the geogrid wing groove (5) is hung on the transversely arranged anchor rods (6), the longitudinal section of the geogrid wing groove (5) is in a U shape, and the opening of the geogrid wing groove (5) faces upward; the geotextile is arranged in the geogrid wing groove (5); the anchor rod (6) penetrates through the two side groove walls of the geogrid wing groove (5); the root soil layer (2) is sprayed in the space between the adjacent geogrid wing grooves (5) and in the groove of the geogrid wing groove (5); the outer surface of the root soil layer (2) is beyond the outer surface of the geogrid wing groove (5); the ecological restoration planting pad (4) is fixed on the outer side of the root soil layer (2) and includes the upper layer of the tensile net (4.1), the lower layer of the tensile net (4.2) and the support layer (4.3) between the upper layer of the tensile net (4.1) and the lower layer of the tensile net (4.2); the outer steel wire mesh layer (8) is hung on the outer side of the ecological restoration planting pad (4); the seedling substrate layer (3) is sprayed on the inner part and the outer surface of the ecological restoration planting pad (4); the vegetation is planted on the seedling substrate layer (3).

2. The water-saving rooted ecological grid revetment structure according to claim 1, characterized in that: The anchor rods (6) are arranged in a matrix shape; the diameter of each anchor rod (6) is not less than 20 mm, and the included angle between the anchor rod (6) and the horizontal plane is 20°-30°.

3. The water-saving rooted ecological grid revetment structure according to claim 1, characterized in that: The inner steel wire mesh layer (7) adopts the steel wire hook-shaped net wrapped by PP plastic; the inner steel wire mesh layer (7) and the anchor rod (6) are connected by welding or binding.

4. The water-saving rooted ecological grid revetment structure according to claim 1, characterized in that: The geogrid wing groove (5) is made of high-strength tensile grid, the grid mesh hole length in the geogrid wing groove (5) is 30-160 mm, the upper opening width of the geogrid wing groove (5) is not less than 150 mm, and the U-shaped groove height is not less than 150 mm.

5. The water-saving rooted ecological grid revetment structure according to claim 1, characterized in that: The mesh hole length of the upper layer of the tensile net (4.1) and the lower layer of the tensile net (4.2) is not less than 2.5 mm, the height of the support layer (4.3) is not less than 30 mm, and the thickness between the upper layer of the tensile net (4.1) and the lower layer of the tensile net (4.2) is greater than 30 mm.

6. The water-saving rooted ecological grid revetment structure according to claim 1, characterized in that: The outer steel wire mesh layer (8) adopts the steel wire hook-shaped net wrapped by PP plastic; the outer steel wire mesh layer (8) and the anchor rod (6) are connected by welding or binding.

7. The water-saving rooted ecological grid revetment structure according to claim 1, characterized in that: The water-saving irrigation system is further included; the water-saving irrigation system includes the drip irrigation pipeline and the infiltration pipeline; the drip irrigation pipeline is arranged on the outer side of the seedling substrate layer (3), and the infiltration pipeline is buried in the seedling substrate layer (3).

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