Biological self-repairing geotechnical cloth suitable for soil slope and construction method

Abstract

The invention discloses biological self-repairing geotechnical cloth suitable for a soil slope and a construction method.The biological self-repairing geotechnical cloth is fixed to the soil slope surface through anchor rods and comprises two layers of biological composite fiber geotechnical cloth arranged up and down and a layer of polypropylene fiber geotechnical cloth arranged between the two layers of biological composite fiber geotechnical cloth; the biological self-repairing geotextile is formed by connecting biological composite fiber geotextile, polypropylene fiber geotextile and biological composite fiber geotextile from top to bottom in sequence through needling. According to the invention, the biological composite fiber geotextile, the polypropylene fiber geotextile and the biological composite fiber geotextile are connected into the biological self-repairing geotextile by adopting a needling technology; batch production of the biological self-repairing composite geotextile can be realized, the production cost is reduced, and the production efficiency is improved; and the biological self-repairing geotechnical cloth is fixed on the soil slope surface in a step shape, so that the soil slope in the application environment can be prevented from sliding and eroding.

Description

Technical Field

[0001] The present invention relates to the technical field of geotextiles, and in particular to a bio-self-repairing geotextile suitable for soil slopes and a construction method thereof. Background Art

[0002] With the continuous development of my country's national infrastructure, engineers often resort to stone or concrete retaining walls and facings, or use sprayed anchors, to prevent soil slopes from collapsing due to rainwater erosion. These engineers treat soil slopes as inanimate, unstable soil or rock masses. This approach can overcome the severe soil erosion, landslides, and debris flows associated with soil slopes, but it also creates serious environmental problems, such as visual gray pollution and ecological imbalance.

[0003] In fact, with the continuous advancement of construction projects, the protection of soil slopes requires biorepairing geotextiles with self-repairing capabilities. These are used to protect against rainwater erosion in soil slope projects. Existing measures such as retaining walls and rainwater-retaining soil slopes are used to prevent rainwater erosion and soil erosion on soil slopes. However, these measures require high bearing capacity of the soil foundation and are not suitable for high-quality soil slopes.

[0004] Therefore, in order to meet the existing engineering construction requirements and lower the subsequent maintenance costs, and to address the environmental problems caused by existing measures, it is urgent to develop a bio-self-repairing geotextile suitable for soil slopes and its construction method. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] The technical problem to be solved by the present invention is to provide a bio-self-repairing geotextile suitable for soil slopes and a construction method. Synthetic fibers and animal and plant fibers soaked in saturated calcium chloride solution are made into bio-composite fiber geotextiles, and the prepared bio-self-repairing geotextile is immersed in a Bacillus subtilis microbial suspension to give it self-repairing ability; the MICP technology is used to extend the life of the bio-self-repairing geotextile, making it adaptable to various harsh environments and having a wide range of engineering application scenarios.

[0007] (2) Technical solution

[0008] The solution adopted by the present invention to solve the above technical problems is a bio-self-repairing geotextile suitable for soil slopes, which is fixed on the soil slope surface by anchor rods. The bio-self-repairing geotextile includes two layers of bio-composite fiber geotextiles arranged upper and lower, and a layer of polypropylene fiber geotextile arranged between the two layers of the bio-composite fiber geotextiles; and the bio-self-repairing geotextile is formed by needle-punching the bio-composite fiber geotextile, polypropylene fiber geotextile and bio-composite fiber geotextile arranged in sequence from top to bottom.

[0009] By adopting the above scheme, the bio-composite fiber geotextile, polypropylene fiber geotextile and bio-composite fiber geotextile are connected into bio-self-repairing geotextile by needle punching technology; the mass production of bio-self-repairing composite geotextile can be realized, the production cost can be reduced and the production efficiency can be improved.

[0010] In some embodiments, the polypropylene fiber geotextile includes polypropylene fibers, and the polypropylene fiber geotextile is formed by connecting the polypropylene fibers through needle punching, so that the polypropylene fiber geotextile has high strength.

[0011] By adopting the above scheme, polypropylene fiber has good acid and alkali resistance, tensile strength between 500-700MPa, elongation at break between 13-15%, and the production process of polypropylene is simple and the cost is low compared to carbon fiber, so that the polypropylene fiber geotextile has the characteristics of anti-aging, corrosion resistance, acid and alkali resistance and good water permeability, providing good strength characteristics for biological self-repairing geotextile.

[0012] In some embodiments, the biocomposite fiber geotextile includes synthetic fibers and animal and plant fibers, and the biocomposite fiber geotextile is formed by connecting the synthetic fibers and the animal and plant fibers through needle punching.

[0013] In some embodiments, the synthetic fibers and plant and animal fibers are soaked in a saturated calcium chloride solution before the needling process to provide a better environment for microorganisms to induce carbonate precipitation.

[0014] In some embodiments, the synthetic fibers include polypropylene fibers and jute fibers, and the plant and animal fibers include wool fibers; and the biocomposite fiber geotextile comprises 40% polypropylene fibers, 40% jute fibers, and 20% wool fibers.

[0015] With the above solution, polypropylene fiber provides good strength characteristics, jute fiber can enhance the anti-penetration ability of bacteria after decomposition, and wool fiber can provide nitrogen fertilizer for microbial decomposition for a long time after decomposition, and also has tear resistance.

[0016] In some embodiments, the bioremediation geotextile is soaked in a microbial suspension required for soil solidification, so that the microorganisms are fully adsorbed onto the surface of the geotextile.

[0017] In some embodiments, the microbial suspension comprises a Bacillus subtilis suspension.

[0018] Specifically, MICP technology, or microbial-induced calcium carbonate precipitation technology, is a process that uses microbial activity to promote the precipitation of calcium carbonate, thereby improving the physical and chemical properties of soil or materials. This technology mainly uses the action of bacteria to induce the precipitation of calcium carbonate in the environment, thereby strengthening the soil or repairing materials.

[0019] By adopting the above scheme, synthetic fibers and plant and animal fibers soaked in saturated calcium chloride solution are made into bio-composite fiber geotextiles, which provide a better environment for microbial-induced carbonate precipitation; the prepared bio-self-repairing geotextile is immersed in a Bacillus subtilis microbial suspension to give it self-repairing ability. In the event of damage or erosion in the project, the bio-self-repairing geotextile can adapt to the scouring in various engineering constructions to prevent the composite geotextile from breaking or not fitting the soil layer after the project is damaged during use; based on MICP technology, the life of the bio-self-repairing geotextile is extended, so that it can adapt to various harsh environments and has a wide range of engineering application scenarios.

[0020] In some embodiments, multiple bio-repairing geotextiles are fixed on the soil slope surface by anchor rods; multiple bio-repairing geotextiles are fixed on the soil slope surface in a step-like manner from top to bottom; and each bio-repairing geotextile is fixed on the soil slope surface by two anchor rods.

[0021] By adopting the above scheme, the bio-self-repairing geotextile is fixed to the soil slope in a step-by-step manner using anchor rods, which enhances the bearing capacity and tensile properties of the bio-self-repairing geotextile; at the same time, it prevents the geotextile from being damaged due to elastic deformation, thereby enhancing the mechanical properties of the bio-self-repairing geotextile and making it adaptable to a humid environment.

[0022] The solution adopted by the present invention to solve the above technical problems is a construction method of a biorepairing geotextile suitable for soil slopes, comprising the following steps:

[0023] (1) Preparation of bio-self-repairing geotextile: polypropylene fiber is needle-punched to form polypropylene fiber geotextile, and polypropylene fiber, jute fiber and wool fiber soaked in a saturated solution of calcium chloride are needle-punched to form bio-composite fiber geotextile; polypropylene fiber geotextile is stacked on the bio-composite fiber geotextile, and the polypropylene fiber geotextile and the bio-composite fiber geotextile are connected into one by needle-punching technology; the bio-composite fiber geotextile is stacked on the polypropylene fiber geotextile, and the bio-composite fiber geotextile and the polypropylene fiber geotextile that have been connected into one are connected into one by needle-punching technology; thereby forming a structure in which a layer of polypropylene fiber geotextile is sandwiched between two layers of bio-composite fiber geotextile;

[0024] (2) Soaking the prepared biorepairing geotextile in a high concentration of Bacillus subtilis suspension to allow Bacillus subtilis to be fully adsorbed on the surface of the geotextile; then culturing it under appropriate temperature and humidity conditions to allow Bacillus subtilis to multiply on the surface of the geotextile;

[0025] (3) Remove the floating stones, loose layers, weeds, dead branches and leaves, garbage and other debris on the slope surface. The biorepairing geotextile is in the shape of steps and is fixed to the surface of the slope with anchor rods to ensure that the biorepairing geotextile fully fits the slope surface, thereby reducing the possibility of rainwater directly entering the slope surface and preventing soil collapse.

[0026] (3) Beneficial effects

[0027] Compared with the existing technology, the present invention designs a biorepairing geotextile suitable for soil slopes and a construction method.

[0028] (1) The present invention uses needle punching technology to connect biocomposite fiber geotextile, polypropylene fiber geotextile and biocomposite fiber geotextile to form bioself-repairing geotextile; it can realize the mass production of bioself-repairing composite geotextile, reduce production costs and improve production efficiency;

[0029] (2) The synthetic fibers of the polypropylene fiber geotextile and the biocomposite fiber geotextile of the present invention contain polypropylene fibers; the polypropylene fibers have good acid and alkali resistance, a tensile strength between 500-700 MPa, and an elongation at break between 13-15%, and the polypropylene manufacturing process is simple and has a low cost compared to carbon fiber, so that the polypropylene fiber geotextile has the characteristics of anti-aging, corrosion resistance, acid and alkali resistance and good water permeability, providing good strength characteristics for the bio-self-repairing geotextile;

[0030] (3) The polypropylene fiber in the biocomposite fiber geotextile of the present invention provides good strength properties, the jute fiber can enhance the anti-penetration ability of bacteria after decomposition, and the wool fiber can provide nitrogen fertilizer for microbial decomposition for a long time after decomposition, and also has tear resistance;

[0031] (4) The present invention prepares biocomposite fiber geotextiles by soaking synthetic fibers and plant and animal fibers in saturated calcium chloride solution, providing a better environment for microbial-induced carbonate precipitation; the prepared biorepairing geotextile is soaked in a Bacillus subtilis microbial suspension to give it self-repairing ability. In the event of damage or erosion during construction, the biorepairing geotextile can adapt to scouring in various engineering constructions, thereby preventing problems such as rupture and non-adhesion of the composite geotextile to the soil layer after damage to the project during use; the life of the biorepairing geotextile is extended based on MICP technology, making it adaptable to various harsh environments and having a wide range of engineering application scenarios;

[0032] (5) The present invention adopts a scientific structure of using anchor rods to fix the biorepairing geotextile in a step-by-step manner on the soil slope, thereby enhancing the bearing capacity and tensile properties of the biorepairing geotextile; at the same time, it prevents the geotextile from being damaged due to elastic deformation, thereby enhancing the mechanical properties of the biorepairing geotextile and being able to adapt to a humid environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 This is a schematic diagram of the biorepairing geotextile of the present invention being fixed on a soil slope;

[0035] Figure 2 The figure is a schematic diagram of the cross-sectional structure of a biorepairing geotextile suitable for soil slopes according to the present invention.

[0036] The names of the components corresponding to the various reference numerals in the figure are: 1. Bio-self-repairing geotextile; 1-1. Bio-composite fiber geotextile; 1-2. Polypropylene fiber geotextile; 2. Anchor rod; 3. Soil slope. DETAILED DESCRIPTION

[0037] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents 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 embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and 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 work are within the scope of protection of this application.

[0040] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an 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 aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0041] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0042] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0043] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0044] like Figure 1-Figure 2 As shown, the present invention provides a biorepairing geotextile suitable for soil slopes, which is fixed to the soil slope surface 3 by an anchor rod 2. The biorepairing geotextile 1 includes two layers of biocomposite fiber geotextiles 1-1 arranged one above the other, and a layer of polypropylene fiber geotextile 1-2 arranged between the two layers of the biocomposite fiber geotextiles 1-1; and the biorepairing geotextile 1 is formed by the biocomposite fiber geotextile 1-1, polypropylene fiber geotextile 1-2 and biocomposite fiber geotextile 1-1 arranged in sequence from top to bottom, connected by needle punching. Using the above scheme, the biocomposite fiber geotextile 1-1, polypropylene fiber geotextile 1-2 and biocomposite fiber geotextile 1-1 are connected to form the biorepairing geotextile 1 by needle punching technology; mass production of the biorepairing composite geotextile can be achieved, reducing production costs and improving production efficiency.

[0045] In some embodiments, the polypropylene fiber geotextile 1-2 includes polypropylene fibers, and the polypropylene fiber geotextile 1-2 is formed by needle-punching the polypropylene fibers, so that the polypropylene fiber geotextile 1-2 has high strength. Using the above solution, the polypropylene fiber has good acid and alkali resistance, a tensile strength between 500-700 MPa, and an elongation at break between 13-15%. In addition, the polypropylene manufacturing process is simple and the cost is low compared to carbon fiber, so that the polypropylene fiber geotextile 1-2 has the characteristics of anti-aging, corrosion resistance, acid and alkali resistance, and good water permeability, providing good strength characteristics for the bio-self-repairing geotextile 1.

[0046] In some embodiments, the biocomposite fiber geotextile 1-1 includes synthetic fibers and animal and plant fibers, and the biocomposite fiber geotextile 1-1 is formed by connecting the synthetic fibers and the animal and plant fibers through needle punching. In some embodiments, the synthetic fibers and the animal and plant fibers are soaked in a saturated solution of calcium chloride before the needling process to provide a better environment for microorganisms to induce carbonate precipitation. The concentration of the saturated solution of calcium chloride is 1 mol / L. In some embodiments, the synthetic fibers include polypropylene fibers and jute fibers, and the animal and plant fibers include wool fibers; and the polypropylene fibers in the biocomposite fiber geotextile 1-1 account for 40%, the jute fibers account for 40%, and the wool fibers account for 20%. With the above scheme, the polypropylene fibers provide good strength properties, the jute fibers can enhance the anti-penetration ability of bacteria after decomposition, and the wool fibers can provide nitrogen fertilizer for microbial decomposition for a long time after decomposition, and have tear resistance.

[0047] In some embodiments, the bioremediation geotextile 1 is soaked in a microbial suspension required for soil solidification so that the microorganisms are fully adsorbed on the surface of the geotextile. In some embodiments, the microbial suspension includes a Bacillus subtilis suspension, and the concentration of the Bacillus subtilis suspension is OD600 = 1.0. Specifically, MICP technology, i.e., microbial induced calcium carbonate precipitation technology, is a process that uses microbial activity to promote calcium carbonate precipitation, thereby improving the physical and chemical properties of soil or materials; this technology mainly uses the action of bacteria to induce the precipitation of calcium carbonate in the environment, thereby strengthening the soil or repairing the material. By adopting the above scheme, synthetic fibers and plant and animal fibers soaked in saturated calcium chloride solution are made into bio-composite fiber geotextile 1-1, which provides a better environment for microbial-induced carbonate precipitation; the prepared bio-self-repairing geotextile 1 is immersed in a Bacillus subtilis microbial suspension to give it self-repairing ability. In the event of damage or erosion in the project, the bio-self-repairing geotextile 1 can adapt to the scouring in various engineering constructions to prevent the composite geotextile from breaking or not fitting the soil layer after the project is damaged during use; based on MICP technology, the life of the bio-self-repairing geotextile 1 is extended, so that it can adapt to various harsh environments and has a wide range of engineering application scenarios.

[0048] In some embodiments, multiple biorepairing geotextiles 1 are fixed to the soil slope 3 via anchor rods 2; multiple biorepairing geotextiles 1 are fixed to the soil slope 3 in a stepped manner from top to bottom; and each biorepairing geotextile 1 is fixed to the soil slope 3 via two anchor rods 2. This solution uses anchor rods 2 to secure the biorepairing geotextile 1 to the soil slope in a stepped manner, enhancing the bearing capacity and tensile strength of the biorepairing geotextile 1. It also prevents damage to the geotextile due to elastic deformation, thereby enhancing the mechanical properties of the biorepairing geotextile 1 and enabling it to adapt to humid environments.

[0049] The invention provides a construction method for a biorepairing geotextile suitable for soil slopes, comprising the following steps:

[0050] (1) Preparing a bio-self-repairing geotextile 1: a polypropylene fiber is needle-punched to form a polypropylene fiber geotextile 1-2, and a polypropylene fiber, a jute fiber and a wool fiber soaked in a saturated calcium chloride solution are needle-punched to form a bio-composite fiber geotextile 1-1; the polypropylene fiber geotextile 1-2 is stacked on the bio-composite fiber geotextile 1-1, and the polypropylene fiber geotextile 1-2 and the bio-composite fiber geotextile 1-1 are connected as a whole by a needle-punching technique; the bio-composite fiber geotextile 1-1 is stacked on the polypropylene fiber geotextile 1-2, and the bio-composite fiber geotextile 1-1 and the polypropylene fiber geotextile 1-2 and the bio-composite fiber geotextile 1-1 that have been connected as a whole are connected as a whole by a needle-punching technique; thereby forming a structure in which a layer of polypropylene fiber geotextile 1-2 is sandwiched between two layers of bio-composite fiber geotextile 1-1;

[0051] (2) Soaking the prepared biorepairing geotextile 1 in a high concentration of Bacillus subtilis suspension to allow the Bacillus subtilis to be fully adsorbed on the surface of the geotextile; then culturing it under appropriate temperature and humidity conditions to allow the Bacillus subtilis to multiply on the surface of the geotextile;

[0052] (3) Remove the floating stones, loose layers, weeds, dead branches and leaves, garbage and other debris on the slope surface. The biorepairing geotextile 1 is in a step-shaped shape and is fixed to the surface of the slope using anchor rods 2 to ensure that the biorepairing geotextile 1 fully fits the slope surface, thereby reducing the possibility of rainwater directly entering the slope surface and preventing soil collapse.

[0053] The following is a specific application scenario of the bio-self-repairing geotextile of the present invention, but it is not limited to this: the bio-self-repairing geotextile is transported from the factory to the soil slope. Before laying the bio-self-repairing geotextile, the soil slope is cleared, leveled, and rolled. The soil slope area to be laid is processed into a step shape. When laying begins, the bio-self-repairing geotextile is spread out manually, and all vehicles and machines are strictly prohibited from passing directly on the geotextile. Lay one layer, that is, fix one layer with anchor rods, and so on. When laying the geotextile, care should be taken to make it close to the slope surface, and the seams of the geotextile should be overlapped to enhance the slope protection effect.

[0054] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0055] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A biorepairing geotextile suitable for soil slopes, fixed on the soil slope surface (3) by anchor rods (2), characterized by: The bio-self-repairing geotextile (1) comprises two layers of bio-composite fiber geotextiles (1-1) arranged one above the other, and a layer of polypropylene fiber geotextile (1-2) arranged between the two layers of the bio-composite fiber geotextiles (1-1); and the bio-self-repairing geotextile (1) is formed by needle-punching the bio-composite fiber geotextile (1-1), the polypropylene fiber geotextile (1-2) and the bio-composite fiber geotextile (1-1) arranged in sequence from top to bottom.

2. The biorepairing geotextile suitable for soil slopes according to claim 1, characterized in that: The polypropylene fiber geotextile (1-2) comprises polypropylene fibers, and the polypropylene fiber geotextile (1-2) is formed by connecting the polypropylene fibers through needle punching.

3. The biorepairing geotextile suitable for soil slopes according to claim 1, characterized in that: The biocomposite fiber geotextile (1-1) comprises synthetic fibers and animal and plant fibers, and the biocomposite fiber geotextile (1-1) is formed by connecting the synthetic fibers and the animal and plant fibers through needle punching.

4. The biorepairing geotextile suitable for soil slopes according to claim 3, characterized in that: The synthetic fibers and animal and plant fibers are soaked in a saturated calcium chloride solution before the needling process.

5. The biorepairing geotextile suitable for soil slopes according to claim 3, characterized in that: The synthetic fibers include polypropylene fibers and jute fibers, and the plant and animal fibers include wool fibers. In addition, the biocomposite fiber geotextile (1-1) comprises 40% polypropylene fibers, 40% jute fibers, and 20% wool fibers.

6. The biorepairing geotextile suitable for soil slopes according to claim 1, characterized in that: The biorepairing geotextile (1) is soaked in a microbial suspension required for soil solidification, so that the microorganisms are fully adsorbed on the surface of the geotextile.

7. The biorepairing geotextile suitable for soil slopes according to claim 6, characterized in that: The microbial suspension includes a Bacillus subtilis suspension.

8. The biorepairing geotextile suitable for soil slopes according to claim 1, characterized in that: A plurality of the bio-repairing geotextiles (1) are fixed on the soil slope surface (3) via anchor rods (2); the plurality of the bio-repairing geotextiles (1) are fixed on the soil slope surface (3) in a step-like manner from top to bottom; and each bio-repairing geotextile (1) is fixed on the soil slope surface (3) via two anchor rods (2).

9. A construction method for a biorepairing geotextile suitable for soil slopes, characterized by: The following steps are involved: (1) Preparing a bio-self-repairing geotextile (1): polypropylene fiber is needle-punched to form a polypropylene fiber geotextile (1-2), and polypropylene fiber, jute fiber and wool fiber soaked in a saturated calcium chloride solution are needle-punched to form a bio-composite fiber geotextile (1-1); the polypropylene fiber geotextile (1-2) is stacked on the bio-composite fiber geotextile (1-1), and the polypropylene fiber geotextile (1-2) and the bio-composite fiber geotextile (1-1) are connected into one by needle-punching; the bio-composite fiber geotextile (1-1) is stacked on the polypropylene fiber geotextile (1-2), and the bio-composite fiber geotextile (1-1) and the polypropylene fiber geotextile (1-2) and the bio-composite fiber geotextile (1-1) that have been connected into one are connected into one by needle-punching; thereby forming a structure in which a layer of polypropylene fiber geotextile (1-2) is sandwiched between two layers of bio-composite fiber geotextile (1-1); (2) Soaking the prepared biorepairing geotextile (1) in a high concentration of Bacillus subtilis suspension to allow the Bacillus subtilis to be fully adsorbed on the surface of the geotextile; then culturing the geotextile under appropriate temperature and humidity conditions to allow the Bacillus subtilis to multiply on the surface of the geotextile; (3) Remove the floating stones, loose layers, weeds, dead branches and leaves, garbage and other debris on the slope surface of the soil. The biorepairing geotextile (1) is in a step-like shape and is fixed to the surface of the soil slope by anchor rods (2) to ensure that the biorepairing geotextile (1) fully fits the soil slope, thereby reducing the possibility of rainwater directly entering the interior of the soil slope and preventing soil collapse.

Images