A bamboo and microbial-based solidified cell slope protection structure and its preparation method

Abstract

This invention provides a method for preparing a bamboo and microbial-based solidified grid cell slope protection structure. The method involves designing a grid cell structure within the slope to be treated, excavating horizontal and inclined trenches within the grid cell structure, burying microbial bamboo strips in the horizontal and inclined trenches, and inserting bamboo anchor rods below the microbial bamboo strips buried in the horizontal trench. Microbial inoculum and cementing liquid are sequentially sprayed into the grid cell structure. The resulting grid cell structure possesses advantages such as high durability, excellent mechanical properties, and resistance to damage from organisms and the external environment. After microbial mineralization, the bamboo strips develop a calcite crystal protective layer on their surface, enhancing their antibacterial, durable, and water-resistant properties. Furthermore, the interaction between the grid cell structure and the bamboo anchor rods provides support, simultaneously reinforcing and anchoring the slope and providing surface protection. This effectively reduces soil erosion and stabilizes the soil over the long term.

Description

Technical Field

[0001] This invention belongs to the field of slope soil and water conservation technology, and relates to a bamboo and microbial solidification grid slope protection structure and its preparation method. Background Technology

[0002] Geocells, as an innovative soil reinforcement and protection material, are manufactured from high-density polyethylene (HDPE) and other high-performance plastic materials through precision welding processes, exhibiting a unique three-dimensional mesh structure. This structure not only endows geocells with excellent mechanical strength and wear resistance, but also enables them to play a key role in various complex geological conditions, particularly excelling in preventing soil erosion, enhancing foundation stability, and promoting vegetation growth.

[0003] However, geocells do face some challenges in practical applications: (1) Biological impact: In humid or ecologically rich areas, geocells, due to their mesh structure and potential for water accumulation, easily attract birds and insects to nest and hatch. While this reflects a positive impact on biodiversity, in the long term, biological activity may cause physical damage to the geocell structure, thereby affecting its soil retention and reinforcement functions. (2) Vegetation root and microbial damage: Over time, vegetation roots may penetrate or entangle the mesh structure of geocells, especially in areas with fertile soil and vigorous vegetation growth. While this biological activity helps soil stability and ecological restoration, it may also gradually weaken the structural integrity of the geocells. At the same time, microbial activity may lead to material surface degradation, accelerating the aging process. (3) Ultraviolet aging: When polymer materials such as HDPE are exposed to strong sunlight for a long time, they undergo photo-oxidation reactions, leading to a decline in material performance, manifested as yellowing, embrittlement, and weakened mechanical properties. This is a significant environmental challenge for geocells, especially in arid areas with strong sunlight, where the aging problem is particularly prominent.

[0004] Therefore, geocells do have some limitations and challenges in practical applications. They are susceptible to damage from various organisms and sunlight, are difficult to repair, and are not environmentally friendly or low-carbon enough due to the use of synthetic materials. In addition, geocells are usually produced and applied in large-scale as a whole, and when local damage occurs, it is impossible to repair in time and can only be replaced in batches. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention proposes a bamboo and microbial solidified grid slope protection structure and preparation method, which solves the problems of poor environmental compatibility, susceptibility to damage by plant roots and microorganisms, easy aging under sunlight, and difficulty in local repair.

[0006] This invention is achieved through the following technical solution:

[0007] A method for preparing a bamboo and microbial-solidified cell slope protection structure, comprising,

[0008] S1, the bamboo is processed and divided into arc-shaped bamboo strip structures, and sterilized and preserved. Microbial liquid and cementing liquid are sprayed on the surface of the bamboo strip structure after sterilization and preservation to obtain microbial bamboo strips.

[0009] S2, design a grid structure in the area of ​​the slope to be treated, excavate horizontal and inclined trenches in the grid structure, bury microbial bamboo strips in the horizontal and inclined trenches respectively, and insert bamboo anchor rods below the microbial bamboo strips buried in the horizontal trench.

[0010] S3, microbial inoculum and cementing liquid are sprayed sequentially onto the microbial bamboo strips and bamboo anchor rods in the horizontal and inclined grooves of the grid structure, as well as onto the exposed soil in the grid structure; then microbial inoculum and cementing liquid are injected sequentially along the bamboo anchor rods, and regular observation and maintenance are carried out to obtain the bamboo and microbial solidified grid slope protection structure.

[0011] Preferably, the specific process of processing and dividing the bamboo into arc-shaped bamboo strip structures in S1 is as follows:

[0012] After removing impurities, nodes, cutting, soaking, and drying, the bamboo is divided into curved bamboo strip structures; the inner arc angle of the bamboo strip structure is 90~120 degrees, and the width of the bamboo strip structure is not less than 3cm.

[0013] Preferably, the specific process of sterilization and preservation treatment in S1 is as follows:

[0014] Bamboo strips are soaked in a quicklime solution with a concentration of 8% to 15% for 24 to 28 hours. After soaking, they are washed and then dried for 2 to 3 days to obtain microbial bamboo strips.

[0015] Preferably, the microbial culture solution is obtained by inoculating Bacillus pasteurellii into a bacterial culture medium and then culturing it under constant temperature and oxygen conditions for 32 hours.

[0016] Preferably, the cementing solution is a mixed solution of calcium chloride and urea with a concentration of 1.5 mol / L.

[0017] Preferably, in S2, the spacing between the microbial bamboo strips buried in the horizontal groove is 30~100cm, the arrangement angle of the microbial bamboo strips in the inclined groove relative to the microbial bamboo strips in the horizontal groove is 30~45 degrees, the depth of the horizontal groove is 3~8cm, and the compartment is a triangular structure.

[0018] Preferably, in S2, the microbial bamboo strips are buried in the horizontal trench with the inner side facing upward, so that 1 / 2 of the length of the microbial bamboo strips is exposed on the soil surface.

[0019] Microbial bamboo strips are buried in the inclined groove with the inner side facing upwards, so that half of the microbial bamboo strips are exposed on the soil surface.

[0020] Preferably, the specific process of inserting bamboo anchor rods below the microbial bamboo strips buried in the horizontal trench in S2 is as follows:

[0021] Below the microbial bamboo strips buried in the horizontal trench, a bamboo anchor rod is installed horizontally every 1 to 5 meters. Holes with a depth of 60 to 120 cm and a width of 3 to 8 meters are processed according to the designed position of the bamboo anchor rod. 3 to 6 microbial bamboo strips are overlapped together to form a bamboo anchor rod and inserted into the hole. The bamboo anchor rod is 6 to 9 cm higher than the slope surface. After completion, the soil is backfilled in layers in the hole.

[0022] Preferably, in step S3, microbial liquid is injected along the bamboo anchor rod using a low-pressure grouting needle, and cementing liquid is injected 2-3 hours later.

[0023] A bamboo and microbial-solidified grid cell slope protection structure is prepared by the above-mentioned method for preparing a bamboo and microbial-solidified grid cell slope protection structure.

[0024] Compared with the prior art, the present invention has the following beneficial technical effects:

[0025] This invention provides a method for preparing a bamboo and microbial-based solidified grid cell slope protection structure. The method involves designing a grid cell structure within the slope to be treated, excavating horizontal and inclined trenches within the grid cell structure, burying microbial bamboo strips in the horizontal and inclined trenches, and inserting bamboo anchor rods below the microbial bamboo strips buried in the horizontal trench. Microbial inoculum and cementing liquid are sequentially sprayed into the grid cell structure. The resulting grid cell structure possesses advantages such as high durability, excellent mechanical properties, and resistance to damage from organisms and the external environment. After microbial mineralization, the bamboo strips develop a calcite crystal protective layer on their surface, enhancing their antibacterial, durable, and water-resistant properties. Furthermore, the interaction between the grid cell structure and the bamboo anchor rods provides support, simultaneously reinforcing and anchoring the slope and providing surface protection. This effectively reduces soil erosion and stabilizes the soil over the long term. It boasts advantages such as good ecological and environmental protection, flexible application, and easy repair after damage. The main material used is moso bamboo, which is naturally occurring, high-yield, and abundant in resources. The binder microbial liquid is also environmentally friendly and non-toxic. When applying it, the size and height of the cells can be flexibly designed. Cells with non-blocking capacity can be set up according to different needs. Furthermore, local damage does not affect the function of other cells. Only the damaged part needs to be rebuilt. It effectively solves the problems of poor environmental compatibility, susceptibility to damage from plant roots and microorganisms, easy aging when exposed to sunlight, and difficulty in local repair.

[0026] Furthermore, the cell structure of the present invention includes horizontally arranged cells and oblique cells, which are triangular on the slope and locally connected by microbial mineralization reaction. The overall structure is a honeycomb structure composed of triangular cell units, with each unit supporting the other, which can effectively stabilize the slope and reduce soil erosion.

[0027] Furthermore, the bamboo anchor rod of the present invention is formed by solidifying multiple layers of bamboo strips and soil with microbial liquid. The bamboo anchor rod formed by the present invention has good integrity and tensile and shear resistance, which can increase the safety and stability coefficient of the slope. At the same time, the surface of the bamboo anchor rod will be higher than the slope surface, which can support the cell structure, reduce the slippage along the slope surface, and make the overall cell structure more stable.

[0028] Furthermore, after soaking in quicklime water and undergoing microbial mineralization treatment, the original surface composition and microstructure of the bamboo strips of the present invention will change. The organic acids on the surface of the bamboo will be destroyed, the bamboo fibers will become denser and more compact, and a dense mineral precipitate will be formed on the surface, giving it good durability, corrosion resistance, and resistance to adverse external influences. Attached Figure Description

[0029] Figure 1 Schematic diagram of the anchor rod and cell section of bamboo and microbial-based bamboo solidification bamboo anchor rod;

[0030] Figure 2 A schematic diagram of the cross-section of the bamboo anchor rod and the horizontal cell.

[0031] Figure 3 This is a schematic diagram of the slope effect;

[0032] In the diagram: 1. Microbial bamboo strips; 2. Microbial solidified soil; 3. Horizontally arranged cell structure; 4. Bamboo anchor rods; 5. Overall cell structure. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] The present invention discloses a solidified grid slope protection structure and preparation method made using natural bamboo strips and microbial strains, which solves the problems of poor environmental compatibility, susceptibility to damage by plant roots and microorganisms, easy aging under sunlight, and difficulty in local repair.

[0036] This patent discloses a slope protection structure and preparation method using bamboo and microbial solidified grid cells. The main steps include: preparation of microbial inoculum and cementing liquid, bamboo material treatment, slope grid cell layout design, slope grid cell trench excavation, bamboo sheet grid cell layout, bamboo anchor rod fabrication and installation, grid cell structure forming and microbial solidification, and maintenance and repair.

[0037] 1. Preparation of Microbial Culture and Cementing Solution: Bacillus pasteurellii is a species that can enrich calcium ions in the environment to form calcium carbonate precipitates through bacterial mineralization reactions. Preparation mainly involves configuring the microbial materials required for subsequent procedures. First, a culture medium is prepared and inoculated with Bacillus pasteurellii. Then, the culture medium is propagated and cultivated under constant temperature and oxygenation conditions. The microbial culture is obtained by culturing in a constant temperature shaker for 32 hours. A 1.5 mol / L solution of calcium chloride and urea is mixed to form a cementing solution. Finally, the microbial culture and cementing solution are stored at 0–5 degrees Celsius.

[0038] 2. Bamboo Material Processing: Moso bamboo is a type of bamboo with a short growth cycle, rapid growth, quick maturity, and high yield. It is characterized by its sturdiness, toughness, durability, high strength, and light weight, and is widely used in construction, papermaking, agriculture, and other fields. Select thick moso bamboo with a diameter greater than 10cm. After harvesting, it undergoes impurity removal, node removal, cutting, soaking, and drying. The bamboo is then divided into strips with a certain degree of curvature, ensuring that the main inner arc angle of the processed strips is 90-120 degrees and the width is not less than 3cm.

[0039] Then, sterilization and preservation treatment is carried out. First, an 8%~15% quicklime solution is prepared and placed in the treatment tank. Then, the bamboo strips are soaked in the tank in batches for 24~28 hours. After soaking, they are taken out and rinsed with clean water. During the soaking process, a small amount of quicklime can be added, and air is introduced into the soaking tank and stirred appropriately to ensure that 50~120kg of quicklime is added for every 500kg of bamboo strips treated. After soaking and rinsing, the bamboo strips are placed in the sun to dry for 2~3 days. After drying, a 1.5mol / L concentration of microbial inoculum and cementing solution is sprayed on the surface of the bamboo strips three times, with an interval of 24 hours. The microbial mineralization process forms a dense mineral protective layer on the surface of the bamboo, improving the corrosion resistance and antibacterial ability of the bamboo strips, and obtaining microbial bamboo strips.

[0040] 3. Slope Cell Layout Design: Determine the area of ​​the slope to be treated, obtain data such as slope gradient, slope length, and soil type, and design triangular cell layouts. For a single slope, multiple layers of horizontal and diagonal bamboo strips are required to form multiple triangular grid structures. During layout, the spacing between the upper and lower layers of horizontal bamboo strips is 30-100cm; generally, the steeper the slope, the larger the spacing. The angle (30-45 degrees) of the diagonal bamboo strips relative to the horizontal bamboo strips is designed based on the spacing. The insertion depth and position of bamboo anchor rods are designed below the horizontal bamboo strips, generally one rod every 1-5 meters horizontally. After determining the scheme, the bamboo strips are processed according to the design dimensions.

[0041] 4. Excavation of cell trenches and placement of microbial bamboo strips: Mark the cell locations on the slope according to the design plan. First, excavate horizontal trenches to a depth of 3-8cm. Bury the microbial bamboo strips with the inner side facing upwards, ensuring that half of the bamboo strips are exposed above the soil. Then, excavate inclined trenches and bury the inclined microbial bamboo strips, with the inner side of the bamboo strips facing upwards. After burying, backfill with soil, leaving half of the bamboo strips exposed above the soil. When placing the bamboo strips, first place the horizontal bamboo strips, then place the inclined bamboo strips. The entire arrangement is along the slope, on a single surface.

[0042] 5. Bamboo Anchor Rod Fabrication and Installation: Drill holes 60-120cm deep and 3-8m wide according to the designed location using a drilling ring cutter. Overlap 3-6 bamboo strips of similar width to form bamboo anchor rods and insert them into the holes. The bamboo anchor rods should extend 6-9cm above the slope surface. After completion, backfill the holes with soil in layers, ensuring the backfill is compacted. After completion, ensure all excavated soil from the slope is used for on-site backfilling. Any excess soil should be evenly distributed in the grooves above the horizontal bamboo strips. The bamboo anchor rods should not penetrate the horizontal bamboo strips; they should support the horizontal bamboo strips through vertical contact.

[0043] 6. Cellar Structure Formation and Microbial Solidification: Using sprayers filled with microbial inoculum and cementing solution, first spray all horizontal bamboo strips and buried soil with the inoculum. A misting sprayer can be used, with the spray pressure adjusted to medium and a distance of 10-20cm. Ensure that all microbial bamboo strips and buried soil on the slope are thoroughly sprayed without creating significant runoff. After spraying, wait 2-3 hours before spraying the cementing solution, using the same method. Then, spray the contact points between the horizontal and obliquely placed microbial bamboo strips with both inoculum and cementing solution, ensuring that the bamboo strips and soil at the connection points are thoroughly sprayed and solidified together by the microbial inoculum. Finally, use a small pressure pump and low-pressure grouting needles to inject the microbial inoculum along the bamboo anchor rods. Inject the cementing solution 2-3 hours later. Repeat the above spraying and grouting methods 3-7 times, depending on the slope protection requirements.

[0044] 7. Maintenance and Repair: After the bamboo and microbial solidification cell structures for slope protection are completed, lightly water the entire slope surface. Observe regularly every 1-3 months. If any cells are damaged, remove the damaged portion and repeat the above steps in its original location, then solidify it using microbial inoculum. Localized repair is simple and does not affect the function of other parts. The technical solution of this patent is described in detail below with reference to the accompanying drawings. Figure 1 This is a schematic diagram of the cross-section of the bamboo anchor rod and the cell structure, which is solidified by moso bamboo and microorganisms. Figure 2 Schematic diagram of bamboo anchor rods and horizontal cell cross-section. Figure 3 Schematic diagram of slope effect.

[0045] After being soaked in quicklime water and subjected to microbial mineralization treatment, the original surface composition and microstructure of the bamboo chips will change. The organic acids on the surface of the bamboo will be destroyed, the bamboo fibers will become denser and more compact, and a dense mineral precipitate will be formed on the surface, giving it good durability, corrosion resistance and resistance to adverse external influences.

[0046] Microbial-stabilized soil 2, formed by microbial mineralization reaction, binds soil particles together with calcium carbonate crystals generated by the microbial reaction, increasing the cohesion and internal friction of the soil particles. The treated microbial bamboo chips 1 and microbial-stabilized soil 2 together form bamboo anchor rods 4 and cell structures 5, possessing integral structure and mechanical properties.

[0047] The horizontally arranged grid structure 3 is an integral structure formed by partially buried bamboo strips and soil solidified by microbial inoculum. Some bamboo strips will be higher than the slope surface by a certain distance, which can act as a grid barrier, intercepting some water and allowing more runoff and rainwater to infiltrate on-site. It will also block some soil particles moving along the slope, thus playing an overall role in reducing soil erosion and stabilizing the soil and slope structure.

[0048] The bamboo anchor rod 4 is formed by solidifying multiple layers of microbial bamboo chips and soil with microbial inoculum. Bamboo anchor rods are a commonly used reinforcement and support method for slopes. The bamboo anchor rod formed by this invention has good integrity and tensile and shear resistance, which can increase the safety and stability coefficient of the slope. At the same time, the surface of the bamboo anchor rod will be higher than the slope surface, which can support the cell structure, reduce slippage along the slope surface, and make the overall cell structure more stable.

[0049] The horizontally arranged and obliquely arranged cells form an integrated cell structure 5, which is triangular on the slope and locally connected by microbial mineralization reaction. The overall structure is a honeycomb structure composed of triangular cell units, with each unit supporting the other, which can effectively stabilize the slope and reduce soil erosion.

[0050] In one preferred embodiment, the inner arc angle of the bamboo strip structure is 90 degrees, and the width of the bamboo strip structure is 3 cm. The bamboo strip structure is soaked in a 15% quicklime aqueous solution for 24 hours. After soaking, it is taken out and rinsed with clean water. During the soaking process, a small amount of quicklime can be added, and air is introduced into the soaking tank and stirred appropriately to ensure that 50 kg of quicklime is added for every 500 kg of bamboo strips processed.

[0051] After soaking, the bamboo chips are washed and then dried for two days to obtain microbial bamboo chips. Below the microbial bamboo chips buried in the horizontal trench, a bamboo anchor rod is installed horizontally every 1 meter. Holes with a depth of 60cm and a width of 3m are drilled according to the designed positions of the bamboo anchor rods. Three microbial bamboo chips are overlapped to form a bamboo anchor rod, which is then inserted into the hole, with the bamboo anchor rod extending 6cm above the slope surface. After completion, soil is backfilled in layers in the holes. Microbial inoculum is injected along the bamboo anchor rod using a low-pressure grouting needle. Two hours later, a binding agent is injected. Specifically, the spraying pressure is adjusted to medium, and spraying is performed at a distance of 10cm to ensure that all microbial bamboo chips and buried soil on the slope are fully sprayed without forming significant runoff. Two hours after spraying, the binding agent is sprayed using the same method. Microbial inoculum and binding agent are then sprayed again at the contact points between the horizontal and obliquely placed microbial bamboo chips to ensure that the microbial bamboo chips and soil at the connection point are fully sprayed and solidified together by the microbial inoculum. Finally, a small pressure pump was used to inject microbial solution along the bamboo anchor rods using a low-pressure grouting needle. Two hours later, a cementing solution was injected. The above spraying and grouting methods were repeated three times according to the slope protection requirements.

[0052] The spacing between the microbial bamboo strips buried in the horizontal trench is 30cm, and the angle between the microbial bamboo strips in the inclined trench and the microbial bamboo strips in the horizontal trench is 30 degrees; the depth of the horizontal trench is 3cm.

[0053] In one preferred embodiment, the inner arc angle of the bamboo strip structure is 100 degrees, and the width of the bamboo strip structure is 5 cm. The bamboo strip structure is soaked in an 8% quicklime aqueous solution for 28 hours. After soaking, it is removed and rinsed with clean water. During the soaking process, a small amount of quicklime can be added, and air is introduced into the soaking tank while stirring appropriately. Ensure that 80 kg of quicklime is added for every 500 kg of bamboo strips processed. After soaking, it is washed and then dried for 3 days to obtain microbial bamboo strips. The spacing between the microbial bamboo strips buried in the horizontal trench is 60cm, and the angle between the microbial bamboo strips in the inclined trench and the microbial bamboo strips in the horizontal trench is 38 degrees. The depth of the horizontal trench is 5cm. Below the microbial bamboo strips buried in the horizontal trench, a bamboo anchor rod is set horizontally every 3m. Holes with a depth of 80cm and a width of 5m are processed according to the designed positions of the bamboo anchor rods. Four microbial bamboo strips are overlapped together to form a bamboo anchor rod and inserted into the hole, with the bamboo anchor rod extending 7cm above the slope surface. After completion, soil is backfilled in layers in the hole. For the soil, microbial inoculum is injected along the bamboo anchor rods using a low-pressure grouting needle. 2.5 hours later, a cementing solution is injected. Specifically, the spraying pressure is adjusted to medium, and spraying is performed at a distance of 15cm to ensure that all microbial bamboo chips and buried soil on the slope are fully sprayed without creating significant runoff. After spraying, the cementing solution is sprayed 2.5 hours later, using the same method. Then, the contact points between horizontal and obliquely placed microbial bamboo chips are sprayed with both microbial inoculum and cementing solution to ensure that the microbial bamboo chips and soil at the connection point are fully sprayed and solidified together by the microbial inoculum. Finally, a small pressure pump is used to inject microbial inoculum along the bamboo anchor rods using a low-pressure grouting needle. 2.5 hours later, the cementing solution is injected. This spraying and grouting method is repeated 5 times, depending on the slope protection requirements.

[0054] In one preferred embodiment, the inner arc angle of the bamboo strip structure is 120 degrees, and the width of the bamboo strip structure is 7 cm. The bamboo strip structure is soaked in a 12% quicklime aqueous solution for 26 hours. After soaking, it is removed and rinsed with clean water. During the soaking process, a small amount of quicklime can be added, and air is introduced into the soaking tank while stirring appropriately. It is ensured that 120 kg of quicklime is added for every 500 kg of bamboo strips processed. After the process is completed, it is washed and then dried for 3 days to obtain microbial bamboo strips. The spacing between the microbial bamboo strips buried in the horizontal trench is 100cm, and the angle between the microbial bamboo strips in the inclined trench and the microbial bamboo strips in the horizontal trench is 45 degrees. The depth of the horizontal trench is 8cm. Below the microbial bamboo strips buried in the horizontal trench, a bamboo anchor rod is set horizontally every 5m. Holes with a depth of 120cm and a width of 8m are processed according to the design position of the bamboo anchor rods. Six microbial bamboo strips are overlapped together to form a bamboo anchor rod and inserted into the hole. The bamboo anchor rod is 9cm higher than the slope surface. After completion, the soil is backfilled in layers in the hole.

[0055] Microbial inoculum solution was injected along the bamboo anchor rods using a low-pressure grouting needle. Three hours later, a binding agent was injected. Specifically, the spraying pressure was adjusted to medium, and spraying was performed at a distance of 20cm to ensure that all microbial bamboo chips and buried soil on the slope were fully sprayed without creating significant runoff. After spraying, the binding agent was sprayed three hours later, using the same method. Then, the contact points between the horizontal and obliquely placed microbial bamboo chips were sprayed with both microbial inoculum solution and binding agent to ensure that the microbial bamboo chips and soil at the connection point were fully sprayed and solidified together by the microbial inoculum solution. Finally, a small pressure pump was used to inject microbial inoculum solution along the bamboo anchor rods using a low-pressure grouting needle. Three hours later, the binding agent was injected. This spraying and grouting method was repeated seven times, depending on the slope protection requirements.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A method for preparing a bamboo and microbial-solidified cell slope protection structure, characterized in that, include, S1, the bamboo is processed and divided into arc-shaped bamboo strip structures, and sterilized and preserved. Microbial liquid and cementing liquid are sprayed on the surface of the bamboo strip structure after sterilization and preservation to obtain microbial bamboo strips. S2, design a grid structure in the area of ​​the slope to be treated, excavate horizontal and inclined trenches in the grid structure, bury microbial bamboo strips in the horizontal and inclined trenches respectively, and insert bamboo anchor rods below the microbial bamboo strips buried in the horizontal trench. S3, microbial inoculum and cementing liquid are sprayed sequentially onto the microbial bamboo strips and bamboo anchor rods in the horizontal and inclined grooves of the grid structure, as well as onto the exposed soil in the grid structure; then microbial inoculum and cementing liquid are injected sequentially along the bamboo anchor rods, and regular observation and maintenance are carried out to obtain the bamboo and microbial solidified grid slope protection structure.

2. The method for preparing a bamboo and microbial-solidified cell slope protection structure according to claim 1, characterized in that, The specific process of processing and dividing bamboo into arc-shaped bamboo strip structures in S1 is as follows: After removing impurities, nodes, cutting, soaking, and drying, the bamboo is divided into curved bamboo strip structures; the inner arc angle of the bamboo strip structure is 90~120 degrees, and the width of the bamboo strip structure is not less than 3cm.

3. The method for preparing a bamboo and microbial-solidified cell slope protection structure according to claim 1, characterized in that, The specific process of sterilization and preservation treatment in S1 is as follows: Bamboo strips are soaked in a quicklime solution with a concentration of 8% to 15% for 24 to 28 hours. After soaking, they are washed and then dried for 2 to 3 days to obtain microbial bamboo strips.

4. The method for preparing a bamboo and microbial-solidified cell slope protection structure according to claim 1, characterized in that, The microbial culture solution was obtained by inoculating Bacillus pasteurellii into a bacterial culture medium and then culturing it under constant temperature and oxygen conditions for 32 hours.

5. The method for preparing a bamboo and microbial-solidified cell slope protection structure according to claim 1, characterized in that, The cementing solution is a mixed solution of calcium chloride and urea with a concentration of 1.5 mol / L.

6. The method for preparing a bamboo and microbial-solidified cell slope protection structure according to claim 1, characterized in that, The spacing between the microbial bamboo strips buried in the horizontal trough in S2 is 30~100cm, and the arrangement angle of the microbial bamboo strips in the inclined trough relative to the microbial bamboo strips in the horizontal trough is 30~45 degrees; the depth of the horizontal trough is 3~8cm, and the compartment is a triangular structure.

7. The method for preparing a bamboo and microbial-solidified cell slope protection structure according to claim 1, characterized in that, In S2, microbial bamboo strips are buried in the horizontal trench with the inside side facing upward, so that 1 / 2 of the length of the microbial bamboo strips is exposed on the soil surface. Microbial bamboo strips are buried in the inclined groove with the inner side facing upwards, so that half of the microbial bamboo strips are exposed on the soil surface.

8. The method for preparing a bamboo and microbial-solidified cell slope protection structure according to claim 1, characterized in that, The specific process of inserting bamboo anchor rods below the microbial bamboo strips buried in the horizontal trench in S2 is as follows: Below the microbial bamboo strips buried in the horizontal trench, a bamboo anchor rod is installed horizontally every 1 to 5 meters. Holes with a depth of 60 to 120 cm and a width of 3 to 8 meters are processed according to the designed position of the bamboo anchor rod. 3 to 6 microbial bamboo strips are overlapped together to form a bamboo anchor rod and inserted into the hole. The bamboo anchor rod is 6 to 9 cm higher than the slope surface. After completion, the soil is backfilled in layers in the hole.

9. The method for preparing a bamboo and microbial-solidified cell slope protection structure according to claim 1, characterized in that, In S3, microbial liquid is injected along the bamboo anchor rod using a low-pressure grouting needle, and cementing liquid is injected 2-3 hours later.

10. A slope protection structure for bamboo and microbial-based solidified cell, characterized in that, The structure was prepared based on the method for preparing a bamboo and microbial solidified cell slope protection structure according to any one of claims 1-9.

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