Method for improving moisture infiltration capacity of urban green land soil
By forming a multi-layered structure on the foundation, including aeration, permeable layer laying and plant planting, the problem of poor permeability of urban green spaces is solved, and the soil's water infiltration capacity and ecological environment quality are improved.
Patent Information
- Application Number
- CN202511028965.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-11-11
AI Technical Summary
Urban green space soil has poor permeability due to messy backfilling, mechanical construction, and trampling during recreation, which can easily cause urban flooding, affecting the ecological environment and traffic safety.
By excavating the foundation, aerating, laying a permeable layer, planting specific plants, installing permeable components, and spraying soil anti-compaction amendments, a multi-layered structure is formed to improve the soil's water infiltration capacity.
It significantly improves the permeability and water retention capacity of urban green space soil, reduces water pollution, alleviates rainwater load, and improves the ecological environment.
Smart Images
Figure CN120920460A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of urban green space soil structure improvement, and more particularly to a method for improving the soil moisture infiltration capacity of urban green spaces. Background Technology
[0002] In the construction of urban green spaces, soil sources are often diverse. Construction, industrial, and domestic waste are frequently used for backfilling, and raw soil or subsoil is often mixed into the soil layers. This irregular mixing of subsoil and topsoil damages the original properties of the urban green space soil. Furthermore, the extensive use of machinery in green space construction and the trampling by citizens during recreational activities lead to severe soil compaction, significantly altering the soil's physical properties. This soil compaction caused by recreational trampling directly affects plant root growth and development, altering the plant's growing environment and causing varying degrees of negative impacts.
[0003] Rainfall causes severe urban flooding, which in turn affects urban transportation, daily life, and production activities, and even threatens the lives of urban residents. Furthermore, urbanization alters the original ecological environment and hydrological system, reducing the permeability of the urban underlying surface and exacerbating flood disasters. Summary of the Invention
[0004] The purpose of this invention is to provide a method for improving the soil moisture infiltration capacity of urban green spaces in order to solve the problem of poor permeability of urban green spaces leading to urban flooding.
[0005] To achieve the above objectives, the present invention provides a method for improving the soil moisture infiltration capacity of urban green spaces, comprising the following steps:
[0006] S1. Excavate the foundation according to the design requirements, clear the soil, level the foundation, divide the foundation into a checkerboard pattern, and use an air pump device to aerate the foundation within the checkerboard squares.
[0007] S2. Construction waste crushing: crush engineering slag, engineering mud, engineering waste, demolition waste and decoration waste into coarse particles with a particle size of 30-50mm, remove the metal inside, lay the coarse particles on the foundation, and then level and compact them to form a permeable layer.
[0008] S3. A starch solution is injected into the permeable layer. The starch solution is hydrolyzed in the permeable layer to form glucose. The glucose is then alcoholized, aldehyde-treated, and acidified to form acetic acid. The acetic acid reacts with the carbonate in the permeable layer to form a water-soluble substance, which is then consumed, thereby increasing the porosity of the permeable layer.
[0009] S4. Base layer laying: After the permeable layer is laid, a mixture of sand and rice husks is laid on the permeable layer. The sand in the mixture is 40%-50% by volume and the rice husks are 50%-60% by volume.
[0010] S5. Planting soil layer laying: After the base layer is laid, lay one or more layers of permeable geotextile on the base layer, and then mix the soil generated from the foundation construction with slag, humus and manure as planting soil, and lay it on the permeable geotextile with a thickness of 60-120mm.
[0011] S6. Plant plants in specific locations on the planting soil layer. After the plants have grown for 1-2 years, cut off the above-ground parts and deactivate the underground parts to promote the rotting of the underground parts and the sprouting roots, forming a large-pore structure in the soil.
[0012] As a further description of the above technical solution:
[0013] A spiral soil drilling machine is used to drill holes in the planting soil layer. The holes are evenly arranged in a grid pattern and extend vertically and horizontally down to the permeable layer. Permeable components are then installed in the holes.
[0014] As a further description of the above technical solution:
[0015] The permeation assembly includes a pipe and a water intake body. The water intake body is built into the pipe. A drainage channel is provided at the center of the water intake body. A channel is provided on the surface of the water intake body. The drainage channel is connected to the channel. The channel is arranged in a spiral.
[0016] As a further description of the above technical solution:
[0017] The bottom of the tube has at least one slit.
[0018] As a further description of the above technical solution:
[0019] The permeable layer is provided with permeable pipes and connecting pipes, the connecting pipes are connected to the permeable pipes, and the permeable pipes are connected to the water collection well.
[0020] As a further description of the above technical solution:
[0021] The planting soil layer is sprayed with a soil anti-compaction modifier, which includes the following by weight percentages: Bacillus subtilis 15%-20%, mineral-derived potassium humate 10%-20%, phosphate rock powder 20%-30%, straw microparticles 20%-35%, lauryl ethoxysulfate 1%-8%, and polyglutamic acid 1%-5%.
[0022] As a further description of the above technical solution:
[0023] The plants to be planted in step S6 include one or more of corn, rubber trees, crabapple, Chinese scholar tree, alfalfa, and soybeans.
[0024] As a further description of the above technical solution:
[0025] The specific location selected in step S6 includes green depressions or rainwater runoff paths.
[0026] As a further description of the above technical solution:
[0027] The air pump device includes an air tank and a retractable needle tube connected to the air tank, with an injection needle connected to the retractable needle tube.
[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0029] 1. In this invention, after the foundation is leveled, an air pump device is used to aerate the foundation soil. The high-pressure airflow impacts the soil interior, directly crushing the compacted clumps, simultaneously increasing the drainage speed and the space for microbial activity, facilitating rainwater infiltration downwards, and improving the permeability of the foundation soil.
[0030] 2. In this invention, coarse particles made from engineering waste, engineering mud, engineering garbage, demolition waste, and decoration waste are used to pave the ground to form a permeable layer. This rational utilization of construction waste not only saves construction resources and protects the environment, but also increases the porosity and rainwater infiltration rate of the ground. The rainwater infiltrating into the soil can not only conserve groundwater, but also reduce the urban stormwater load and significantly improve the urban ecological environment. It also significantly improves the soil's water storage capacity and pollutant purification capacity, and reduces water pollutants. By injecting starch solution into the permeable layer, the porosity of the permeable layer can be further improved.
[0031] 3. In this invention, different plants are rotated on the planting soil layer. At the same time, the above-ground parts are cut off after the plants have grown for 1-2 years, and the underground parts are deactivated to promote the decay of the underground parts and the sprouting roots and form a large pore structure in the soil, which can improve the soil permeability. Attached Figure Description
[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is a flowchart of a method for improving the soil moisture infiltration capacity of urban green spaces.
[0034] Figure 2 This is a schematic diagram of a structure for improving soil in urban green spaces.
[0035] Figure 3 This is a schematic diagram of the permeation component.
[0036] Legend:
[0037] 1. Foundation; 2. Permeable layer; 3. Base layer; 4. Planting soil layer; 5. Permeable pipe; 6. Connecting pipe; 7. Water collection well; 8. Permeable component; 81. Pipe body; 82. Water diversion body; 9. Drainage channel; 10. Channel; 11. Gap. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0041] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.
[0042] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0043] Please see Figure 1-3 This invention provides a method for improving the soil moisture infiltration capacity of urban green spaces, comprising:
[0044] S1. Excavate foundation 1 according to design requirements, clear the soil, level foundation 1, divide foundation 1 into a checkerboard pattern, and use an air pump device to aerate foundation 1 within the checkerboard grid.
[0045] S2. Construction waste crushing: crush engineering slag, engineering mud, engineering waste, demolition waste and decoration waste into coarse particles with a particle size of 30-50mm, remove the metal inside, lay the coarse particles on the foundation, and then level and compact them to form a permeable layer 2.
[0046] S3. A starch solution is injected into the permeation layer 2. The starch solution is hydrolyzed in the permeation layer 2 to form glucose. The glucose is then alcoholized, aldehyde-treated, and acidified to form acetic acid. The acetic acid reacts with the carbonate in the permeation layer to form a water-soluble substance, which is then consumed, thereby increasing the porosity of the permeation layer.
[0047] S4. After the base layer 3 is laid and the permeable layer 2 is laid, a mixture of sand and rice husks is laid on the permeable layer 2, wherein the sand in the mixture is 40%-50% by volume and the rice husks are 50%-60% by volume.
[0048] S5. Planting soil layer 4: After the base layer is laid, lay one or more layers of permeable geotextile on the base layer. Then mix the soil generated from the foundation construction with slag, humus and manure as planting soil and lay it on the permeable geotextile with a thickness of 60-120mm.
[0049] S6. Plant plants in specific locations on the planting soil layer 4. After the plants have grown for 1-2 years, cut off the above-ground parts and perform an inactivation operation on the underground parts to promote the decay of the underground parts and the sprouting roots and form a large pore structure in the soil.
[0050] A spiral soil drilling machine is used to drill holes in the planting soil layer 4. The holes are evenly arranged in a grid pattern and extend vertically downwards to the permeable layer. A permeable component 8 is installed in the holes.
[0051] The infiltration component 8 includes a pipe body 81 and a water intake body 82. The water intake body 82 is built into the pipe body 81, and a drainage channel 9 is provided at the center of the water intake body 82. Channels 10 are provided on the surface of the water intake body 82, and the drainage channel is connected to the channels 10. The channels 10 are arranged in a spiral. This infiltration component improves soil infiltration. Specifically, rainwater can enter through the drainage channel, and after passing through the drainage channel 9, it flows into the infiltration layer, efficiently utilizing natural rainfall and directly transferring lost and evaporated water to the infiltration layer to replenish soil moisture; it also has the effects of soil and water conservation and vegetation protection. The pipe body and the water intake body form a double-pipe structure, which can prevent clogging.
[0052] The bottom of the pipe has at least one slit 11 to facilitate water flow out of the pipe.
[0053] The permeable layer 2 is lined with permeable pipes 5 and connecting pipes 6, with the connecting pipes connected to the permeable pipes. The permeable pipes are connected to the collection well 7. By connecting the permeable pipes to the collection well via the connecting pipes, rainwater can be recycled and reused, thus conserving water resources.
[0054] The planting soil layer is sprayed with a soil anti-compaction modifier, which comprises the following components by weight percentage: Bacillus subtilis 15%-20%, potassium humate 10%-20%, phosphate rock powder 20%-30%, straw microparticles 20%-35%, lauryl ethoxysulfate 1%-8%, and polyglutamic acid 1%-5%. Spraying this soil anti-compaction modifier prevents soil compaction. Specifically, Bacillus subtilis secretes extracellular polysaccharides to promote aggregate formation and reduce soil bulk density; potassium humate neutralizes salt and alkali ions through carboxyl functional groups, adjusting the pH to 6.5-7.5; phosphate rock powder provides calcium ions to replace sodium ions, alleviating saline-alkali soil compaction; straw microparticles increase non-capillary porosity and improve water retention capacity; lauryl ethoxysulfate acts as an anionic surfactant to decompose hydrogen bonds, achieving physical soil loosening; and polyglutamic acid chelates heavy metals, reducing nutrient fixation.
[0055] The plants to be planted in step S6 include one or more of corn, rubber trees, crabapple, Chinese scholar tree, alfalfa, and soybeans.
[0056] The specific location selected in step S6 includes green depressions or rainwater runoff paths.
[0057] The air pump device includes an air storage tank and a retractable needle tube connected to the air storage tank, with an injection needle connected to the retractable needle tube. The injection needle has a diffusion nozzle at its tip to ensure that the gas impacts the soil layer radially, which can improve porosity.
[0058] Working Principle: After the foundation is leveled, an air pump is used to aerate the soil. High-pressure airflow impacts the soil interior, directly breaking up compacted clumps, simultaneously increasing drainage speed and space for microbial activity, facilitating rainwater infiltration and improving soil permeability. Construction waste, slurry, debris, demolition waste, and renovation waste are used to create coarse particles, which are then laid to form a permeable layer. This rational utilization of construction waste saves construction resources, protects the environment, and increases soil porosity and rainwater permeability. Rainwater infiltrating the soil not only conserves groundwater but also reduces urban stormwater load, significantly improving the urban ecological environment. It also significantly improves soil water retention and pollutant purification capabilities, reducing water pollution. Injecting starch solution into the permeable layer further increases its porosity. Different plants are rotated on the planting soil layer, and after 1-2 years, the above-ground parts are harvested to deactivate the underground parts, promoting the decomposition of underground components and sprouting roots, forming a large-pore soil structure, which further improves soil permeability.
[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A method for improving the soil moisture infiltration capacity of urban green spaces, characterized in that, Includes the following steps: S1. Excavate the foundation according to the design requirements, clear the soil, level the foundation, divide the foundation into a checkerboard pattern, and use an air pump device to aerate the foundation within the checkerboard squares. S2. Construction waste crushing: crush engineering slag, engineering mud, engineering waste, demolition waste and decoration waste into coarse particles with a particle size of 30-50mm, remove the metal inside, lay the coarse particles on the foundation, and then level and compact them to form a permeable layer. S3. A starch solution is injected into the permeable layer. The starch solution is hydrolyzed in the permeable layer to form glucose. The glucose is then alcoholized, aldehyde-treated, and acidified to form acetic acid. The acetic acid reacts with the carbonate in the permeable layer to form a water-soluble substance, which is then consumed, thereby increasing the porosity of the permeable layer. S4. Base layer laying: After the permeable layer is laid, a mixture of sand and rice husks is laid on the permeable layer. The sand in the mixture is 40%-50% by volume and the rice husks are 50%-60% by volume. S5. Planting soil layer laying: After the base layer is laid, lay one or more layers of permeable geotextile on the base layer, and then mix the soil generated from the foundation construction with slag, humus and manure as planting soil, and lay it on the permeable geotextile with a thickness of 60-120mm. S6. Plant plants in specific locations on the planting soil layer. After the plants have grown for 1-2 years, cut off the above-ground parts and deactivate the underground parts to promote the rotting of the underground parts and the sprouting roots, forming a large-pore structure in the soil.
2. The method for improving the soil moisture infiltration capacity of urban green spaces according to claim 1, characterized in that, A spiral soil drilling machine is used to drill holes in the planting soil layer. The holes are evenly arranged in a grid pattern and extend vertically and horizontally down to the permeable layer. Permeable components are then installed in the holes.
3. The method for improving the soil moisture infiltration capacity of urban green spaces according to claim 2, characterized in that, The permeation assembly includes a pipe and a water intake body. The water intake body is built into the pipe. A drainage channel is provided at the center of the water intake body. A channel is provided on the surface of the water intake body. The drainage channel is connected to the channel. The channel is arranged in a spiral.
4. The method for improving the soil moisture infiltration capacity of urban green spaces according to claim 3, characterized in that, The bottom of the tube has at least one slit.
5. The method for improving the soil moisture infiltration capacity of urban green spaces according to claim 1, characterized in that, The permeable layer is provided with permeable pipes and connecting pipes, the connecting pipes are connected to the permeable pipes, and the permeable pipes are connected to the water collection well.
6. The method for improving the soil moisture infiltration capacity of urban green spaces according to claim 1, characterized in that, The planting soil layer is sprayed with a soil anti-compaction modifier, which includes the following by weight percentages: Bacillus subtilis 15%-20%, mineral-derived potassium humate 10%-20%, phosphate rock powder 20%-30%, straw microparticles 20%-35%, lauryl ethoxysulfate 1%-8%, and polyglutamic acid 1%-5%.
7. The method for improving the soil moisture infiltration capacity of urban green spaces according to claim 1, characterized in that, The plants to be planted in step S6 include one or more of corn, rubber trees, crabapple, Chinese scholar tree, alfalfa, and soybeans.
8. The method for improving the soil moisture infiltration capacity of urban green spaces according to claim 1, characterized in that, The specific location selected in step S6 includes green depressions or rainwater runoff paths.
9. A method for improving the soil moisture infiltration capacity of urban green spaces according to claim 1, characterized in that, The air pump device includes an air tank and a retractable needle tube connected to the air tank, with an injection needle connected to the retractable needle tube.