Degradable slope protection vegetation geotextile

Abstract

The utility model relates to degradable slope protection vegetation geotextile, which comprises two layers of double-sided degradable biological geotextile and concrete arranged between the two layers of double-sided degradable biological geotextile, the double-sided degradable biological geotechnical cloth comprises two layers of polylactic acid biopolymer geotechnical cloth and jute fiber bundles, and the jute fiber bundles penetrate through the two layers of polylactic acid biopolymer geotechnical cloth from top to bottom and are bound to form the double-sided degradable biological geotechnical cloth. The double-faced degradable biological geotextile forms a carrier, a better growth environment is provided for plants in the biochar vegetation concrete, the blended biochar vegetation concrete is evenly poured in the middle of the double-faced degradable biological geotextile, and the purpose of evenly reinforcing the side slope is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of geotextiles, in particular to a degradable slope protection vegetation geotextile. Background Art

[0002] With the continuous construction of national infrastructure in China, the development of various construction projects has gradually formed cut slopes. To ensure the stability of the soil mass at the edge of the earth excavation area, the prior art generally conducts ordinary grass planting slope protection, sets a retaining wall, or conducts frame protection or anchor protection. These technical measures can overcome the serious soil erosion, landslides, debris flows and other disasters brought by the slopes, but cannot achieve sustainable development.

[0003] In fact, with the continuous progress of construction projects, geotextiles with a certain strength and the function of revegetation are required in the protection of cut slopes to be applicable to cut slope protection projects. The prior art sets retaining walls or simply uses vegetation revegetation and other measures to carry out cut slope protection. However, the retaining walls required by these measures have high requirements for the bearing capacity of the slope ground foundation and are not suitable for high slopes. The simple vegetation slope protection technology has a weak effect on slope stability and cannot effectively solve the problem of soil erosion on the slope surface. The application of this technology is also restricted to some relatively gentle slopes.

[0004] Therefore, in order to ensure the stability of the slope, it is necessary to take further engineering technologies to stabilize and protect the slope, and to meet the existing engineering construction requirements and the later lower maintenance costs. In view of the environmental problems brought by the existing measures, it is urgent to form a degradable slope protection vegetation geotextile. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The technical problem to be solved by the utility model is to provide a degradable slope protection vegetation geotextile, which forms a carrier with a double-sided degradable biogeotextile to provide a better growth environment for the plants in the biochar vegetation concrete. The mixed biochar vegetation concrete is evenly poured in the middle of the double-sided degradable geotextile to achieve the purpose of uniform slope reinforcement.

[0007] (2) Technical Solutions

[0008] The solution adopted by the utility model to solve the above technical problems is a degradable slope protection vegetation geotextile, which includes two layers of double-sided degradable biogeotextiles and biochar vegetation concrete placed between the two layers of double-sided degradable biogeotextiles; the double-sided degradable biogeotextile includes two layers of polylactic acid biopolymer geotextiles and jute fiber bundles, and the double-sided degradable biogeotextile is tied by the jute fiber bundles passing through the two layers of polylactic acid biopolymer geotextiles from top to bottom.

[0009] In some embodiments, the polylactic acid biopolymer geotextile is formed by connecting polylactic acid fibers through a needling process.

[0010] Specifically, both the polylactic acid fibers and the jute fiber bundles are degradable, implementing the concept of environmental protection, green and sustainable development; after the jute fibers degrade, they can provide a good growth environment for plant growth and better achieve vegetation restoration.

[0011] Adopting the above solution, the polylactic acid biopolymer geotextile can ensure the strength characteristics of the overall geotextile.

[0012] In some embodiments, the jute fiber bundles pass through two layers of polylactic acid biopolymer geotextiles from top to bottom and are fixedly tied to form the double-sided degradable biogeotextile.

[0013] In some embodiments, the jute fiber bundles pass through the polylactic acid biopolymer geotextile, forming a number of fixed points on the polylactic acid biopolymer geotextile, and the number of fixed points is arranged in a matrix.

[0014] In some embodiments, a spacing L is formed between any one of the fixed points and an adjacent fixed point, and the range of L is 1m - 2m.

[0015] Adopting the above solution, the jute fiber bundles pass through the polylactic acid biopolymer geotextile and are fixedly tied to form a double-sided degradable biogeotextile, ensuring the strength and stability of the double-sided degradable biogeotextile.

[0016] In some embodiments, the double-sided degradable biogeotextile is infiltrated with the bacterial strains required by plants before laying.

[0017] In some embodiments, the bacterial strains required by plants include Bacillus subtilis.

[0018] Adopting the above solution, Bacillus subtilis is beneficial to plant growth, can act as a biological fertilizer, and can also promote slope reinforcement; it provides a better environment for plant growth and geotextile reinforcement.

[0019] In some embodiments, the biochar-added vegetation concrete is formed by mixing cement and coarse aggregates to form a basic concrete, and plant seeds and a small amount of biochar are mixed into the basic concrete.

[0020] Specifically, the biochar-added vegetation concrete for slope reinforcement and vegetation restoration comprises the following raw materials in parts by weight: 25 - 30 parts of cement, 40 - 50 parts of coarse aggregates, 0.5 - 2 parts of plant seeds, and 1 - 5 parts of biochar.

[0021] In some embodiments, the plant seeds include pigeon pea seeds.

[0022] Using the above solution, pigeon pea is a fast-growing shrub with very developed roots, and the planting coverage rate can reach about 90%; as a protective plant, pigeon pea can not only fix the soil and reduce soil erosion, but also its root nodules can fix nitrogen to increase soil fertility, and its fallen leaves can improve the soil structure and increase the organic matter content; biochar can react with concrete to increase the strength of the concrete itself; thus, the addition of biochar improves the strength of the vegetative concrete, and at the same time, biochar has good water retention and can be used as a soil conditioner to promote soil remediation and plant growth.

[0023] A preparation method of a degradable slope protection vegetative geotextile of the present utility model comprises the following steps:

[0024] (1) Prepare a double-sided degradable biogeotextile: Make a polylactic acid biopolymer geotextile from polylactic acid fibers by a needling process, and use jute fiber bundles to pass through the two layers of polylactic acid biopolymer geotextiles from top to bottom to achieve fixed-point binding, so that the three parts form a complete structure;

[0025] (2) Immerse the prepared double-sided degradable biogeotextile in a Bacillus subtilis solution;

[0026] (3) Prepare biochar vegetative concrete: Mix cement, coarse aggregate, pigeon pea seeds and a small amount of biochar to form biochar vegetative concrete;

[0027] (4) Remove sundries such as floating stones, loose layers, weeds, withered and rotten leaves and garbage on the slope surface, lay the double-sided degradable biogeotextile on the surface of the cut slope, and form a lap of 10 cm - 20 cm between adjacent double-sided degradable biogeotextiles; form a carrier with the double-sided degradable biogeotextile, and then evenly pour the mixed biochar vegetative concrete in the middle of the double-sided degradable geotextile. Wait for the biochar vegetative concrete to harden to form a degradable slope protection vegetative geotextile.

[0028] Using the above solution, a carrier is formed with the double-sided degradable biogeotextile to provide a better growth environment for the plants in the biochar vegetative concrete, and the mixed biochar vegetative concrete is evenly poured in the middle of the double-sided degradable biogeotextile to achieve the purpose of uniform slope reinforcement.

[0029] (III) Beneficial effects

[0030] Compared with the prior art, the present utility model designs a degradable slope protection vegetative geotextile,

[0031] (1) Both the polylactic acid fibers and the jute fiber bundles adopted by the present utility model are degradable, implementing the concept of environmental protection, green and sustainable development; after the jute fibers degrade, they can provide a good growth environment for plant growth and better realize vegetation restoration;

[0032] (2) The double-sided degradable biogeotextile of the present utility model is formed by passing jute fiber bundles through two layers of polylactic acid biopolymer geotextiles from top to bottom and fixing them at designated points, with a stable structure and high strength;

[0033] (3) The polylactic acid biopolymer geotextile of the present utility model can ensure the strength characteristics of the overall geotextile;

[0034] (4) The Bacillus subtilis adopted by the present utility model is beneficial to plant growth, can act as a bio-fertilizer, and can also promote slope reinforcement; it provides a better environment for plant growth and geotextile reinforcement;

[0035] (5) The pigeon pea adopted by the present utility model is a fast-growing shrub with very developed roots, and the planting coverage rate can reach up to about 90%; as a protective plant, the pigeon pea can not only fix the soil and reduce soil erosion, but its root nodules can also fix nitrogen and increase soil fertility, and its fallen leaves can improve the soil structure and increase the organic matter content; biochar can react with concrete to increase the strength of the concrete itself; the addition of biochar improves the strength of the vegetative concrete, and at the same time, biochar has good water retention and can be used as a soil conditioner to promote soil remediation and plant growth;

[0036] (6) The present utility model adopts needle punching technology, which is easy to realize the batch production of double-sided degradable biogeotextiles, reduces production costs and improves production efficiency;

[0037] (7) The present utility model forms a carrier with the double-sided degradable biogeotextile to provide a better growth environment for the plants in the biochar vegetative concrete. The mixed biochar vegetative concrete is evenly poured in the middle of the double-sided degradable geotextile to achieve the purpose of uniform slope reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 It is a schematic cross-sectional structure diagram of a degradable slope protection vegetative geotextile of the present utility model;

[0040] Figure 2 It is a schematic plan structure diagram of the double-sided degradable biogeotextile of the present utility model.

[0041] The corresponding component names for the reference numerals in the drawings are: 1. Double-sided degradable biogeotextile; 1-1. Polylactic acid biopolymer geotextile; 1-2. Jute fiber bundle; 2. Biochar vegetative concrete. Detailed implementation manners

[0042] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0045] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be obvious that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. In addition, this device and / or this method can be implemented using other structures and / or functions in addition to one or more of the aspects described herein.

[0046] It should also be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. The drawings only show the components related to the present application, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in its actual implementation can be an arbitrary change, and the component layout type may also be more complex.

[0047] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.

[0048] The following describes the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.

[0049] As Figure 1 - Figure 2 shown, the present utility model provides a degradable slope protection vegetation geotextile, which comprises two layers of double-sided degradable biological geotextiles 1 and biochar vegetation concrete 2 placed between the two layers of double-sided degradable biological geotextiles 1; the double-sided degradable biological geotextile 1 comprises two layers of polylactic acid biopolymer geotextiles 1-1 and jute fiber bundles 1-2, and the double-sided degradable biological geotextile 1 is formed by tying the jute fiber bundles 1-2 through the two layers of polylactic acid biopolymer geotextiles 1-1 from top to bottom. In some embodiments, the polylactic acid biopolymer geotextile 1-1 is formed by connecting polylactic acid fibers through a needling process. Specifically, both the polylactic acid fibers and the jute fiber bundles 1-2 are degradable, implementing the concept of environmental protection, green and sustainable development; after the jute fibers degrade, they can provide a good growth environment for plant growth and better achieve vegetation restoration. With the above scheme, the polylactic acid biopolymer geotextile 1-1 can ensure the strength characteristics of the overall geotextile.

[0050] In some embodiments, the jute fiber bundles 1-2 pass through the two layers of polylactic acid biopolymer geotextiles 1-1 from top to bottom and are tied at fixed points to form the double-sided degradable biological geotextile 1. In some embodiments, the jute fiber bundles 1-2 pass through the polylactic acid biopolymer geotextile 1-1, forming a number of fixed points on the polylactic acid biopolymer geotextile 1-1, and the number of fixed points is arranged in a matrix. In some embodiments, a spacing L is formed between any one of the fixed points and an adjacent fixed point, and the range of L is 2m. With the above scheme, the jute fiber bundles 1-2 pass through the polylactic acid biopolymer geotextile 1-1 and are tied at fixed points to form the double-sided degradable biological geotextile 1, ensuring the strength and stability of the double-sided degradable biological geotextile 1.

[0051] In some embodiments, the double-sided degradable biological geotextile 1 is infiltrated with the bacterial strains required by plants before laying. In some embodiments, the bacterial strains required by plants include Bacillus subtilis. With the above scheme, Bacillus subtilis is beneficial to plant growth, can act as a biological fertilizer, and can also promote slope reinforcement; it provides a better environment for plant growth and geotextile reinforcement.

[0052] In some embodiments, the biochar vegetation concrete 2 is formed by mixing cement and coarse aggregate to form a basic concrete, and plant seeds and a small amount of biochar are mixed into the basic concrete. Specifically, the biochar vegetation concrete 2 for slope reinforcement and vegetation revegetation comprises the following raw materials in parts by weight: 25-30 parts of cement, 40-50 parts of coarse aggregate, 0.5-2 parts of plant seeds, and 1-5 parts of biochar. In some embodiments, the plant seeds include pigeon pea seeds. With the above scheme, pigeon pea is a fast-growing shrub with very developed roots, and the planting coverage rate can reach about 90% at most; as a protective plant, pigeon pea can not only fix the soil and reduce soil erosion, but also its root nodules can fix nitrogen and increase soil fertility, and its fallen leaves can improve the soil structure and increase the organic matter content; biochar can react with concrete to increase the strength of the concrete itself; thus, the addition of biochar improves the strength of the vegetation concrete, and at the same time, biochar has good water retention and can be used as a soil conditioner to promote soil repair and plant growth.

[0053] A preparation method of a degradable slope protection vegetation geotextile of the present utility model comprises the following steps:

[0054] (1) Prepare a double-sided degradable geobiotextile 1: Make a polylactic acid biopolymer geotextile 1-1 from polylactic acid fibers by a needling process, and use jute fiber bundles 1-2 to pass through the two layers of polylactic acid biopolymer geotextiles 1-1 from top to bottom to achieve fixed-point binding, and form a complete structure with the three parts;

[0055] (2) Immerse the prepared double-sided degradable geobiotextile 1 in a Bacillus subtilis solution;

[0056] (3) Prepare biochar vegetation concrete 2: Mix cement, coarse aggregate, pigeon pea seeds and a small amount of biochar to form biochar vegetation concrete 2;

[0057] (4) Remove sundries such as floating stones, loose layers, weeds, dead branches and leaves, and garbage on the slope surface, lay the double-sided degradable geobiotextile 1 on the surface of the cut slope, and form a 20 cm overlap between adjacent double-sided degradable geobiotextiles 1; form a carrier with the double-sided degradable geobiotextile 1, and then evenly pour the mixed biochar vegetation concrete 2 in the middle of the double-sided degradable geotextile. Wait for the biochar vegetation concrete 2 to harden to form a degradable slope protection vegetation geotextile.

[0058] Wherein, the concentration of the Bacillus subtilis solution is OD600 = 1.0.

[0059] With the above scheme, the double-sided degradable geobiotextile 1 is formed into a carrier to provide a better growth environment for the plants in the biochar vegetation concrete 2, and the mixed biochar vegetation concrete 2 is evenly poured in the middle of the double-sided degradable geotextile to achieve the purpose of uniform slope reinforcement.

[0060] The following presents a specific application scenario of the double-sided degradable geotextile 1 of the present utility model, but is not limited thereto: The double-sided degradable geotextile 1 is transported from the factory to the cut slope. Before laying the double-sided degradable geotextile 1, the soil slope is cleared of surface vegetation, graded, and compacted. When starting to lay, the double-sided degradable geotextile 1 is spread out manually, and it is strictly prohibited for any vehicles and machines to directly pass on the geotextile. When laying the geotextile, attention should be paid to making it closely adhere to the slope surface, and the joints of the geotextile should be overlapped to enhance the slope protection effect. The mixed biochar vegetative concrete 2 is evenly poured in the middle of the double-sided degradable geotextile 1. After the biochar vegetative concrete 2 hardens, the purpose of slope reinforcement is achieved.

[0061] For the same or similar parts among the various embodiments in this specification, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0062] As described above, the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A degradable slope protection geotextile, characterized by: The degradable slope protection vegetation geotextile comprises two layers of double-sided degradable bio-geotextile (1), and concrete placed between the two layers of the double-sided degradable bio-geotextile (1); the double-sided degradable bio-geotextile (1) comprises two layers of polylactic acid biopolymer geotextile (1-1) and jute fiber bundles (1-2), and the double-sided degradable bio-geotextile (1) is formed by the jute fiber bundles (1-2) passing through the two layers of polylactic acid biopolymer geotextile (1-1) from top to bottom and tying them together.

2. The degradable slope protection geotextile according to claim 1, characterized in that: The concrete comprises biochar-vegetated concrete (2).

3. The degradable slope protection geotextile according to claim 1, characterized in that: The polylactic acid biopolymer geotextile (1-1) is formed by connecting polylactic acid fibers through a needle punching process.

4. The degradable slope protection geotextile according to claim 1, characterized in that: The jute fiber bundles (1-2) pass through two layers of polylactic acid biopolymer geotextiles (1-1) from top to bottom and are tied at fixed points to form the double-sided degradable biogeotextile (1).

5. The degradable slope protection geotextile according to claim 4, characterized in that: The jute fiber bundles (1-2) pass through the polylactic acid biopolymer geotextile (1-1), forming a plurality of fixed points on the polylactic acid biopolymer geotextile (1-1), and the plurality of fixed points are arranged in a matrix.

6. The degradable slope protection geotextile according to claim 5, characterized in that: A distance L is formed between any one of the fixed points and an adjacent one of the fixed points, and the range of L is 1m-2m.

Images