A method for planting grass on a slope

Abstract

The application discloses a kind of side slope grass planting method, comprising the following steps: S1, after laying soil on the surface of side slope base body, grass planting ball is covered to slope soil layer, and grass planting ball layer is formed;S2, plant fiber net is laid on the surface of grass planting ball layer, and anchor rod is installed to fix plant fiber net on slope surface, pour enough water, complete side slope grass planting;The grass planting ball layer is divided into three layers structure from longitudinal section, and the particle size of grass planting ball gradually decreases from upper layer to middle layer to lower layer to form multi-layer hole structure grass planting ball layer;The grass planting ball comprises the following components by mass percentage: 70-80% of neutral regenerated micro powder, 1-3% of plant fiber, 20-30% of nutrient soil, 0.1-1% of vegetation seed, 1-2% of dextrin powder and the balance is water.The neutral grass planting ball layer has good particle size distribution and porosity, can solve the problem of soil fixation, is beneficial to plant growth, meets the greening requirement, and is simple to construct.

Description

Technical Field

[0001] This invention relates to the field of green ecology and slope greening technology, and more specifically, to a method for planting grass on slopes. Background Technology

[0002] Specific implementation forms of slope protection include plant-based slope protection, eco-bag slope protection, and porous structure slope protection. Among them, eco-bag slope protection is prone to aging, and under the scouring of water flow, uneven settlement may affect the stability of the slope; porous structure slope protection has the problems of high cost and low vegetation coverage; plant-based slope protection has limited resistance to water flow and wave erosion, and when the slope inclination angle is large, rainwater flows down the slope, and the plants are easily eroded by rainwater in the early stage of growth, forming deep gullies.

[0003] Slope protection and greening refers to the process of planting vegetation on the surface of a slope after it has been leveled. The plant roots help to stabilize the soil and protect the slope, preventing water erosion and soil loss. This method is effective in both maintaining the stability of the slope surface and restoring the damaged natural ecological environment.

[0004] Currently, ecological greening research and application are developing rapidly. The main technologies include hydroseeding, bagging, grouting, and paving. These methods first create a soil-rich environment on bare slopes, then use manual sowing, mechanical hydroseeding, or direct planting to ultimately achieve slope vegetation coverage. Taking hydroseeding as an example, soil is mixed with fiber, peat moss, water-retaining agents, adhesives, fertilizers, and plant seeds, and then mechanically sprayed onto the slope to form "imported soil," playing a positive role in environmental management. However, several problems exist, mainly in the following aspects: 1. The overall slope protection environment is not conducive to plant growth, as most adhesives are cement with high alkalinity; 2. Lawns planted in the early stages of growth are easily washed away, failing to meet the requirements for soil and water conservation. For example, patent CN115053784A discloses a hydroseeding material and its application method, which uses sand, cement, soil, fiber and water to mix to obtain a concrete hydroseeding matrix, and then sprays a layer of soil seed matrix on the concrete matrix, with a thickness of 1cm to 3cm. However, the soil seed layer is easily washed away by storms and rain, causing soil erosion. Patent CN107963838A discloses an ecological spray anchor slope protection method, which sprays a greening surface layer composed of cement-reinforced alkaline modified composite planting soil and seeds. Although the surface layer is very stable, the cement is used as a binder and the alkalinity is high, which is not conducive to plant growth. Summary of the Invention

[0005] The purpose of this invention is to overcome the aforementioned deficiencies in the existing technology and provide a method for planting grass on slopes. This method involves setting up a grass ball layer composed of multiple layers with different particle sizes and porosities. The particle size of the grass balls is arranged from small to large along the depth direction, resulting in a good particle size distribution. This provides channels for water circulation, reduces soil erosion, and improves vegetation survival rate. Furthermore, the porosity of the grass balls directly affects the plant's growth space and growth path, playing a crucial role in the plant's living environment and root distribution. The grass balls are neutral and do not inhibit plant growth. This is a feasible method for solving soil stabilization problems, promoting plant growth, meeting greening requirements, and facilitating construction. It is easy to construct, conducive to streamlined and large-scale production, and can be widely applied to slope management, solving key technical problems encountered in slope protection and grass planting in practical engineering.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] A method for planting grass on slopes includes the following steps:

[0008] S1. After laying soil on the surface of the slope base, cover the slope soil layer with grass balls to form a grass ball layer.

[0009] S2. Lay a plant fiber net on the surface of the grass ball layer and install anchor bolts to fix the plant fiber net to the slope. Water thoroughly to complete the slope grass planting.

[0010] The grass ball layer is divided into three layers (upper, middle, and lower) in longitudinal section. The grass ball particle size gradually decreases from the upper layer to the middle layer to the lower layer to form a multi-layer porous grass ball layer.

[0011] The grass ball comprises the following components by weight percentage: 70%–80% neutral regenerated micro powder, 1%–3% plant fiber, 20%–30% nutrient soil, 0.1%–1% plant seeds, 1%–2% dextrin powder, and the balance being water.

[0012] Implementing the embodiments of the present invention will have the following beneficial effects:

[0013] (1) This invention uses recycled micro powder as the main raw material to prepare grass balls, which is conducive to the resource utilization of recycled micro powder. The neutralization process of recycled micro powder absorbs carbon dioxide, which creates a suitable vegetation growth environment and promotes rapid plant growth. On the other hand, the carbonization reaction is conducive to waste carbon sequestration, energy saving and emission reduction. The preparation process is simple and the cost is low. At the same time, the grass balls based on neutral recycled micro powder have a significant carbon sequestration effect, which is conducive to reducing carbon emissions.

[0014] (2) This invention sets up a grass ball layer composed of a multi-layer porous structure. By filling it with grass balls of different particle sizes, the particle size of the grass balls is arranged from large to small along the depth direction, so that the grass ball layer has a good particle size distribution. The spherical surface of the spherical particles forms the pores between the particles. The pores are interwoven in three dimensions to form a continuous water transport channel, which provides a channel for water circulation. This can effectively slow down the erosion of rainwater, reduce soil loss and improve the survival rate of vegetation. Moreover, the grass balls are neutral and will not inhibit the growth of plants. This is a feasible way to solve the soil fixation problem, promote plant growth, meet the greening requirements and is easy to construct.

[0015] (3) The grass ball layer formed by spreading or backfilling can be used to provide seeds and nutrients and cover the exposed soil layer; the plant fiber net layer fixes and protects the grass ball layer to prevent the grass balls from rolling off due to storms. This structure forms a green protective net on the surface of the slope, protecting the slope structure in an ecological and green way.

[0016] (4) The slope planting method of this invention combines new materials. The components of the planting balls work synergistically. Utilizing the porous structure and controllable pore size of the regenerated micro-powder, the prepared planting balls have excellent water retention and permeability. The nutrient soil provides nutrients for the plant seeds, and the cross-linked plant fibers provide aeration, creating a suitable growing environment for the plant seeds. The planting balls are sown using conventional sowing methods. They also have good erosion resistance, and the plant seeds germinate and grow within 5-10 days, resulting in a high survival rate and wide applicability. This invention uses dextrin powder as a binder, which dissolves in water. Germinated grass seeds can easily break through the planting balls. The broken planting balls are equivalent to covering the soil with a layer of nutrient-insulating residue, helping the vegetation grow better. This effectively overcomes the shortcomings of commonly used ecological slope protection methods, achieving synergistic adaptation between new materials and planting methods. It is easy to construct, conducive to streamlined and large-scale production, and can be widely applied to slope management, solving key technical problems encountered in actual engineering projects involving slope planting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of slope planting according to an embodiment of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments, but this does not limit the present invention in any way.

[0019] This invention discloses a method for planting grass on slopes, such as... Figure 1 As shown, it includes the following steps:

[0020] S1. After laying soil on the surface of the slope base 1, cover the slope soil layer 2 with grass balls to form grass ball layer 3.

[0021] S2. Lay plant fiber netting 4 on the surface of the grass ball layer 3 and install anchor bolts 5 to fix the plant fiber netting 4 to the slope. Water thoroughly to complete the grass planting on the slope.

[0022] Specifically, this invention lays a layer of grass balls with granular gradation on top of the slope soil layer 2. This reduces the amount of exposed soil in the early growth stage before the vegetation provides protection, effectively mitigating rainwater erosion and reducing soil loss, while also increasing vegetation survival rates without inhibiting plant growth. A layer of plant fiber netting 4 is then laid on top of the grass balls. This not only secures the grass balls, preventing them from rolling off the slope due to strong winds or heavy rain, but also anchors the grass roots throughout the grass's growth cycle. Furthermore, the plant fiber netting 4 degrades and is absorbed by the vegetation after a certain period. Anchor bolts 5 effectively secure the plant fiber netting 4. In use, the anchor bolts 5 are driven into the slope soil layer 2, allowing the grass roots inside the grass balls to penetrate the surface soil layer 2, contact the substrate, and take root, preventing rainwater from eroding the lawn.

[0023] Furthermore, the grass ball layer 3 is divided into three layers in the longitudinal section: upper, middle and lower. The grass ball particle size of the grass ball layer 3 gradually decreases from the upper layer to the middle layer to the lower layer to form a multi-layer porous structure grass ball layer 3.

[0024] Furthermore, the grass ball comprises the following components by weight percentage: 70%–80% neutral regenerated micro powder, 1%–3% plant fiber, 20%–30% nutrient soil, 0.1%–1% plant seeds, 1%–2% dextrin powder, and the balance being water.

[0025] Specifically, the roles and synergistic effects of each component in this invention are as follows: First, this invention utilizes the carbonizable properties of regenerated micropowder, which, after carbonization, becomes neutral. This creates a suitable environment for vegetation growth, promoting rapid plant growth. Furthermore, the carbonization reaction facilitates waste carbon sequestration, energy conservation, and emission reduction. The preparation process is simple and cost-effective. Simultaneously, the grass balls based on neutral regenerated micropowder exhibit significant carbon sequestration effects, contributing to reduced carbon emissions. Second, the porous structure and controllable pore size of the regenerated micropowder result in grass balls with superior water retention and permeability. Further, the nutrient soil provides nutrients for plant seeds, and the cross-linked plant fibers enhance aeration, jointly providing a suitable growth environment for seed growth. It also exhibits good erosion resistance, allowing seeds to germinate within 5-10 days, resulting in high seed survival rates and wide applicability. Furthermore, this invention uses dextrin powder as a binder, which promotes soil particle aggregation, increases the number of soil aggregates, improves soil water retention and biological activity, and dissolves in water. Germinating grass seeds can easily break through the planting ball, and the broken planting ball is equivalent to covering the soil with a layer of nutrient-insulating residue, helping the vegetation grow better. Therefore, neutral regenerated micro powder, plant fiber, nutrient soil, vegetation seeds, and dextrin powder have a synergistic effect, playing a role in water retention and permeability, while enhancing erosion resistance, improving plant rooting, germination, and growth speed, and the porous structure of the planting ball can also provide oxygen for plant roots to breathe, preventing root rot and plant death caused by excessive external moisture.

[0026] In one specific embodiment, the mesh size of the plant fiber net 4 is 10mm×10mm to 20mm×20mm.

[0027] In one specific embodiment, the number of anchor bolts 5 is 4 per square meter, which are fixed around the plant fiber net 4.

[0028] In one specific embodiment, the total thickness of the grass ball layer 3 is 2cm to 4cm.

[0029] In one specific embodiment, the particle size of the grass balls is 5mm to 30mm.

[0030] In one specific embodiment, the porosity of the grass balls is 15% to 30%.

[0031] Specifically, this invention sets up a grass ball layer 3 composed of a multi-layered porous structure. By filling it with grass balls of different particle sizes and porosities, the particle size of the grass balls is arranged from large to small along the depth direction, resulting in a good particle size distribution for the grass ball layer 3. The spherical surfaces of the spherical particles form pores between the particles, and the pores are interwoven in three dimensions to form a continuous water transport channel, providing a channel for water circulation. This can effectively slow down rainwater erosion, reduce soil loss, and improve the survival rate of vegetation. Moreover, the grass balls are neutral and will not inhibit plant growth. This is a feasible way to solve soil fixation problems, promote plant growth, meet greening requirements, and is easy to construct.

[0032] In one specific embodiment, the particle size of the neutral regenerated micro powder is 1µm to 300µm.

[0033] In one specific embodiment, the neutral regenerated micro powder of the present invention is divided into the following three particle sizes: first particle size: 1-100 μm; second particle size: 100-200 μm; third particle size: 200-300 μm. Different porosities can be obtained by preparing grass-planting balls from each particle size of the regenerated micro powder. The mixing mass ratio of the first, second, and third particle sizes is (0-10):(0-10):(0-10).

[0034] In one specific embodiment, the grass balls of the present invention are divided into the following three particle sizes: first particle size: 5-10 mm; second particle size: 10-20 mm; third particle size: 20-30 mm. Grass balls of each particle size are evenly spread on the slope to form a three-layer structure (bottom, middle, and top).

[0035] Specifically, the porosity of grass balls directly affects the plant's growth space and growth path, playing a crucial role in the plant's living environment and root growth distribution. Based on this, this invention comprehensively considers the microstructural characteristics of regenerated micropowder, such as pore structure, porosity, and number of pores, as well as the physiological growth characteristics of vegetation. It uses a reasonable gradation of multi-particle-size neutral regenerated micropowder to regulate the porosity of grass balls, which helps to provide a scientific and favorable growth space and conditions for plant root growth, thereby improving plant growth vitality and coverage.

[0036] In one specific embodiment, the length of the plant fiber is 0.1 mm to 2.0 mm.

[0037] In one specific embodiment, the nutrient soil is acidic fertilizer powder with a particle size ≤150um;

[0038] In one specific embodiment, the vegetation seeds include one or more of bermudagrass, tall fescue, ryegrass, red fescue, and Kentucky bluegrass.

[0039] In one specific embodiment, the method for preparing grass balls includes the following steps:

[0040] S1. Carbon dioxide is passed through waste concrete powder with a pH of 12.6 to carbonize it, resulting in neutral recycled micro powder with a pH of 8.6.

[0041] Specifically, neutral regenerated micro powder is prepared by carbonization of alkaline initial regenerated micro powder by passing carbon dioxide through it.

[0042] In one specific embodiment, the carbonization conditions in step S1 are: carbon dioxide concentration of 20% to 99%, carbonization pressure of 0.1 MPa to 0.3 MPa, carbonization temperature of 15°C to 25°C, and carbonization time of 8h to 12h.

[0043] In one specific embodiment, the carbonization conditions in step S1 may also be: carbon dioxide concentration of 20% to 25%, humidity of 65% to 75%, carbonization temperature of 15°C to 25°C, and carbonization time of 3 to 7 days.

[0044] S2. Mix the neutral regenerated micro powder with plant fiber, nutrient soil, plant seeds and dextrin powder to obtain a mixed powder.

[0045] S3. Spray water to granulate the mixed powder, and then dry it after consolidation to obtain grass balls.

[0046] In one specific embodiment, the mixing ratio of the powder to water is 1:(0.25~0.3).

[0047] In one specific embodiment, the consolidation drying temperature is 30°C to 40°C.

[0048] Specifically, this invention achieves synergistic compatibility between new materials and planting methods, making construction easy, facilitating streamlined and large-scale production, and enabling its widespread application in slope management, thus solving key technical challenges encountered in actual engineering projects involving slope protection and grass planting.

[0049] The following are specific embodiments.

[0050] Example 1

[0051] This embodiment of a slope planting method includes the following steps:

[0052] S1. After laying soil on the surface of the slope base, cover the slope soil layer with grass balls to form a grass ball layer.

[0053] S2. Lay a 10mm x 10mm plant fiber net on the surface of the grass ball layer and install anchor bolts to fix the plant fiber net to the slope. Four anchor bolts are installed per square meter, fixed around the perimeter of the plant fiber net. Water thoroughly to complete the slope planting. (Note:)

[0054] The total thickness of the grass ball layer is 4cm, and the grass ball layer is divided into three layers (upper, middle, and lower) in longitudinal section.

[0055] The grass-planting ball comprises the following components by weight percentage: 80% neutral regenerated micro powder, 1% plant fiber with a length of 0.5 mm, 16% nutrient powder, 1% tall fescue, 2% dextrin powder, and the balance being water. The neutral regenerated micro powder is divided into three particle sizes: first size: 1–100 μm; second size: 100–200 μm; third size: 200–300 μm. The mixing ratio of the first, second, and third sizes is 8:1:1.

[0056] The method for preparing grass balls includes the following steps:

[0057] S1. Waste concrete powder with a pH of 12.6 is carbonized by passing carbon dioxide through it to obtain neutral recycled micro powder with a pH of 8.6. The carbonization conditions are: carbon dioxide concentration of 99%, carbonization gas pressure of 0.3 MPa, carbonization temperature of 18℃~22℃, and carbonization time of 8h.

[0058] S2. Mix the neutral regenerated micro powder with plant fiber, nutrient soil, plant seeds and dextrin powder to obtain a mixed powder.

[0059] S3. Spray water to granulate the mixed powder. The mixing ratio of the mixed powder to water is 1:0.3. Place it in an indoor ventilated environment until it solidifies, and then dry it in a 40°C drying oven at a low temperature to obtain grass balls.

[0060] Example 2

[0061] This embodiment of a slope planting method includes the following steps:

[0062] S1. After laying soil on the surface of the slope base, cover the slope soil layer with grass balls to form a grass ball layer.

[0063] S2. Lay a plant fiber net (10mm×10mm) on the surface of the grass ball layer and install anchors to fix the plant fiber net to the slope. The number of anchors is 4 per square meter, fixed around the plant fiber net. Water thoroughly to complete the grass planting on the slope.

[0064] The total thickness of the grass ball layer is 4cm, and the grass ball layer is divided into three layers (upper, middle, and lower) in longitudinal section.

[0065] The grass ball comprises the following components by weight percentage: 76% neutral regenerated micron powder, 1% plant fiber with a length of 0.5 mm, 20% nutrient powder, 1% tall fescue, 2% dextrin powder, and the balance being water. The neutral regenerated micron powder is divided into three particle sizes: first size: 1–100 μm; second size: 100–200 μm; third size: 200–300 μm, with a mixing ratio of first, second, and third sizes of 2:7:1.

[0066] The method for preparing grass balls includes the following steps:

[0067] S1. Waste concrete powder with a pH of 12.6 is carbonized by passing carbon dioxide through it to obtain neutral recycled micro powder with a pH of 8.6. The carbonization conditions are: carbon dioxide concentration of 99%, carbonization gas pressure of 0.3 MPa, carbonization temperature of 18℃~22℃, and carbonization time of 8h.

[0068] S2. Mix the neutral regenerated micro powder with plant fiber, nutrient soil, plant seeds and dextrin powder to obtain a mixed powder.

[0069] S3. Spray water to granulate the mixed powder. The mixing ratio of the mixed powder to water is 1:0.3. Place it in an indoor ventilated environment until it solidifies, and then dry it in a 40°C drying oven at a low temperature to obtain grass balls.

[0070] Example 3

[0071] This embodiment of a slope planting method includes the following steps:

[0072] S1. After laying soil on the surface of the slope base, cover the slope soil layer with grass balls to form a grass ball layer.

[0073] S2. Lay a plant fiber net (10mm×10mm) on the surface of the grass ball layer and install anchors to fix the plant fiber net to the slope. The number of anchors is 4 per square meter, fixed around the plant fiber net. Water thoroughly to complete the grass planting on the slope.

[0074] The total thickness of the grass ball layer is 4cm, and the grass ball layer is divided into three layers (upper, middle, and lower) in longitudinal section.

[0075] The grass-planting ball comprises the following components by weight percentage: 71% neutral regenerated micron powder, 1% plant fiber with a length of 0.5 mm, 25% nutrient powder, 1% tall fescue, 2% dextrin powder, and the balance being water. The neutral regenerated micron powder is divided into three particle sizes: first size: 1–100 μm; second size: 100–200 μm; third size: 200–300 μm. The mixing ratio of the first, second, and third sizes is 1:2:7.

[0076] The method for preparing grass balls includes the following steps:

[0077] S1. Waste concrete powder with a pH of 12.6 is carbonized by passing carbon dioxide through it to obtain neutral recycled micro powder with a pH of 8.6. The carbonization conditions are: carbon dioxide concentration of 99%, carbonization gas pressure of 0.3 MPa, carbonization temperature of 18℃~22℃, and carbonization time of 8h.

[0078] S2. Mix the neutral regenerated micro powder with plant fiber, nutrient soil, plant seeds and dextrin powder to obtain a mixed powder.

[0079] S3. Spray water to granulate the mixed powder. The mixing ratio of the mixed powder to water is 1:0.3. Place it in an indoor ventilated environment until it solidifies, and then dry it in a 40°C drying oven at a low temperature to obtain grass balls.

[0080] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for planting grass on slopes, characterized in that, Includes the following steps: S1. After laying soil on the surface of the slope base, cover the slope soil layer with grass balls to form a grass ball layer. S2. Lay a plant fiber net on the surface of the grass ball layer and install anchor bolts to fix the plant fiber net to the slope. Water thoroughly to complete the slope grass planting. The grass ball layer is divided into three layers (upper, middle, and lower) in longitudinal section. The grass ball particle size gradually decreases from the upper layer to the middle layer to the lower layer to form a multi-layer porous grass ball layer. The grass ball comprises the following components by weight percentage: 70%~80% neutral regenerated micro powder, 1%~3% plant fiber, 20%~30% nutrient soil, 0.1%~1% plant seeds, 1%~2% dextrin powder, and the balance being water. The total thickness of the grass ball layer is 2cm to 4cm; The size of the grass balls is 5mm~30mm; The porosity of the grass-planting balls is 15%~30%; The particle size of the neutral regenerated micro powder is 1µm to 300µm; The method for preparing the grass-planting balls includes the following steps: S1. Carbon dioxide is passed through waste concrete powder with a pH of 12.6 to carbonize it, resulting in neutral recycled micro powder with a pH of 8.

6. S2. The neutral regenerated micro powder is mixed with plant fiber, nutrient soil, plant seeds and dextrin powder to obtain a mixed powder; S3. The mixed powder is sprayed with water to granulate, and then dried after consolidation to obtain the grass ball; The carbonization conditions in step S1 are: carbon dioxide concentration of 20%–99%, carbonization gas pressure of 0.1 MPa–0.3 MPa, carbonization temperature of 15°C–25°C, and carbonization time of 8 h–12 h; or, The carbonization conditions in step S1 are: carbon dioxide concentration of 20% to 25%, humidity of 65% to 75%, carbonization temperature of 15°C to 25°C, and carbonization time of 3 to 7 days.

2. The slope planting method according to claim 1, characterized in that, The particle size of the neutral regenerated micro powder is 1µm to 300µm.

3. The method for planting grass on slopes according to claim 1, characterized in that, The length of the plant fiber is 0.1 mm to 2.0 mm; The nutrient soil is acidic fertilizer powder with a particle size ≤150um; The plant seeds include one or more of the following: bermudagrass, tall fescue, ryegrass, red fescue, and Kentucky bluegrass.

4. The method for planting grass on slopes according to claim 1, characterized in that, In step S3, the mixing ratio of the mixed powder to water is 1:(0.25~0.3).

5. The method for planting grass on slopes according to claim 1, characterized in that, The mesh size of the plant fiber net is 10mm×10mm~20mm×20mm.

6. The method for planting grass on slopes according to claim 1, characterized in that, The number of anchor bolts installed is 4 per square meter, which are fixed around the plant fiber net.

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