Phyllostachys pubescens and microorganism solidification geocell slope protection structure and preparation method

Abstract

The invention provides a preparation method of a moso bamboo and microorganism solidification lattice chamber slope protection structure, which comprises the following steps: designing a lattice chamber structure in a to-be-treated slope range area, excavating a horizontal groove and an inclined groove in the lattice chamber structure, respectively burying microorganism moso bamboo chips in the horizontal groove and the inclined groove, moso bamboo anchoring rods are inserted below the microorganism moso bamboo sheets embedded in the horizontal grooves; microbial bacterial liquid and cementing liquid are sequentially sprayed into the cell structures, the formed cell structures have the advantages of being high in durability, excellent in mechanical property and not prone to being damaged by organisms and the external environment, and after the moso bamboo pieces are mineralized through microorganisms, calcite crystal protection layers are formed on the surfaces of the moso bamboo pieces, so that the antibacterial performance, the durability, the water resistance and other performance of the moso bamboo pieces are improved; and the geocell structures and the moso bamboo anchoring rods interact for supporting, so that the slope surface is subjected to reinforced anchoring and surface protection at the same time, and the effects of reducing slope surface water and soil loss and stabilizing soil for a long time can be fully achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of preventing and controlling soil erosion on slopes, and relates to a bamboo and microbial solidified cell slope protection structure and a preparation method thereof. Background Art

[0002] As an innovative soil reinforcement and protection material, geocell is made of high-performance plastic materials such as high-density polyethylene (HDPE) through precision welding technology, showing a unique three-dimensional mesh structure. This structure not only gives the geocell excellent mechanical strength and wear resistance, but also enables it to play a key role in a variety of complex geological conditions, especially in preventing soil erosion, enhancing foundation stability and promoting vegetation growth.

[0003] However, geocells do face some challenges in practical applications: (1) Biological impacts: In humid or ecologically rich areas, geocells are prone to attract birds and insects to build nests and hatch due to their mesh structure and possible water accumulation. Although this reflects a certain positive impact on biodiversity, in the long run, biological activities may cause physical damage to the cell 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. Although this biological activity helps soil stabilization and ecological restoration, it may also gradually weaken the structural integrity of the cell. At the same time, microbial activity may cause material surface degradation and accelerate the aging process. (3) UV aging: When polymer materials such as HDPE are exposed to strong sunlight for a long time, photooxidation reactions will occur, resulting in a decrease in material performance, manifested as yellowing, brittleness, and weakened mechanical properties. This is a significant environmental challenge for geocells, especially in arid and sunny areas, where aging problems are 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 use artificial synthetic materials that are not environmentally friendly and low-carbon. In addition, geocells are usually produced and applied in large areas. When local damage occurs, they cannot be repaired in time and can only be replaced in batches. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention proposes a bamboo and microbial solidified cell slope protection structure and a preparation method, which solves the problems of poor environmental affinity, susceptibility to damage by plant roots and microorganisms, easy aging when exposed to sunlight, and difficulty in local repair.

[0006] The present invention is achieved through the following technical solutions: A method for preparing a bamboo and microorganism solidified cell slope protection structure, comprising: S1, processing and splitting bamboo into arc-shaped bamboo strip structures, and performing sterilization and antiseptic treatment, spraying microbial liquid and bonding liquid on the surface of the bamboo strip structures after sterilization and antiseptic treatment to obtain microbial bamboo strips; S2, designing a cell structure in the area of ​​the slope to be treated, excavating horizontal grooves and inclined grooves in the cell structure, burying microbial bamboo chips in the horizontal grooves and the inclined grooves respectively, and inserting bamboo anchoring rods under the microbial bamboo chips buried in the horizontal grooves; S3, spray the microbial liquid and the cementing liquid in turn on the microbial bamboo pieces and bamboo anchoring rods in the horizontal grooves and inclined grooves in the cell structure and the soil exposed in the cell structure; then inject the microbial liquid and the cementing liquid along the bamboo anchoring rods in turn, observe and maintain regularly, and obtain the bamboo and microbial solidified cell slope protection structure.

[0007] Preferably, the specific process of processing and splitting the bamboo to form the arc-shaped bamboo strip structure in S1 is: After the bamboo is subjected to impurity removal, node removal, cutting, soaking and drying treatments, it is segmented to form a bamboo strip structure with an arc; 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 3 cm.

[0008] Preferably, the specific process of sterilization and antiseptic treatment in S1 is: The bamboo strip structure is soaked in a quicklime aqueous solution with a concentration of 8% to 15% for 24 to 28 hours. After the soaking is completed, it is washed and then aired for 2 to 3 days to obtain the microbial bamboo chips.

[0009] Preferably, the microbial culture liquid is obtained by inoculating Bacillus pasteurianus in a bacterial culture medium and culturing the culture medium under constant temperature and oxygen injection conditions for 32 hours.

[0010] Preferably, the binder liquid is a mixed solution of calcium chloride and urea with a concentration of 1.5 mol / L.

[0011] Preferably, the spacing of the microbial bamboo chips buried in the horizontal groove in S2 is 30-100 cm, the layout angle of the microbial bamboo chips in the inclined groove relative to the microbial bamboo chips in the horizontal groove is 30-45 degrees; the depth of the horizontal groove is 3-8 cm, and the cell is a triangular structure.

[0012] Preferably, the microbial bamboo chips are buried in the horizontal groove in S2 with the inner side facing upward, so that 1 / 2 of the length of the microbial bamboo chips is exposed on the soil surface; The microbial bamboo pieces are buried in the inclined groove with the inner side facing upward obliquely, so that 1 / 2 of the length of the microbial bamboo pieces is exposed on the soil surface.

[0013] Preferably, the specific process of inserting the bamboo anchoring rod below the microbial bamboo slice buried in the horizontal groove in S2 is: Below the microbial bamboo chips buried in the horizontal groove, a bamboo anchoring rod is set horizontally every 1~5m. According to the designed position of the bamboo anchoring rod, a hole with a depth of 60~120cm and a width of 3~8m is processed. 3~6 pieces of microbial bamboo chips are overlapped to form a bamboo anchoring rod and inserted into the hole. The bamboo anchoring rod is 6~9cm higher than the slope surface. After completion, the hole is backfilled with soil in layers.

[0014] Preferably, in S3, a microbial liquid is injected along the bamboo anchor rod by a low-pressure grouting needle method, and then a cementing liquid is injected after 2 to 3 hours.

[0015] A bamboo and microorganism solidified cellular slope protection structure is prepared by the above-mentioned method for preparing a bamboo and microorganism solidified cellular slope protection structure.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The invention provides a preparation method of a bamboo and microorganism solidified cell slope protection structure. The cell structure is designed in a slope range area to be treated, horizontal grooves and inclined grooves are excavated in the cell structure, microbial bamboo pieces are buried in the horizontal grooves and the inclined grooves respectively, and bamboo anchoring rods are inserted below the microbial bamboo pieces buried in the horizontal grooves; microbial bacterial liquid and cementing liquid are sprayed in the cell structure in sequence, and the formed cell structure has the advantages of strong durability, excellent mechanical properties, and is not easily damaged by organisms and the external environment. After the bamboo pieces are mineralized by microorganisms, a calcite crystal protective layer is formed on the surface to improve their antibacterial, durable, water-resistant and other properties, and the cell structure and the bamboo anchoring rods interact and support each other, so that the slope is reinforced and anchored and the surface is protected at the same time, which is conducive to giving full play to the role of long-term reduction of slope soil erosion and stabilization of the soil. It has the advantages of good ecological environmental protection, flexible application and easy repair after damage. The main material used is the natural bamboo material with high yield and abundant resources in nature. The microbial bacterial liquid of the binder is also environmentally friendly and non-toxic. The cell size and cell height can be flexibly and freely designed during application. Cells with non-blocking capacity can be set according to different needs, and local damage will not affect the functions of other cells. Only the damaged part needs to be rebuilt, which effectively solves the problems of poor environmental affinity, susceptibility to damage by plant roots and microorganisms, easy aging when exposed to sunlight and difficulty in local repair.

[0017] Furthermore, the cell structure of the present invention includes horizontally arranged cells and oblique cells, which are triangular on the slope surface, are partially connected by microbial mineralization reactions, and are an integral honeycomb structure composed of triangular cell units. Each unit structure supports each other, which can effectively stabilize the slope surface and reduce soil erosion; Furthermore, the bamboo anchor rod of the present invention has multiple layers of superimposed bamboo pieces and soil that are solidified by microbial liquid. The bamboo anchor rod formed by the present invention has good integrity and tensile and shear resistance, and can increase the safety 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 and reduce slippage along the slope, making the overall cell more stable.

[0018] Furthermore, after the bamboo pieces of the present invention are soaked in quicklime water and treated with microbial mineralization, the original surface composition and microstructure will change, the organic acid on the bamboo surface will be destroyed, the bamboo fibers will be denser and more compact, and a layer of dense mineral precipitation will be formed on the surface, making the bamboo pieces have good durability, corrosion resistance, and resistance to adverse external influences. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross section of the anchor rod and the cell of the bamboo and microorganism-cured bamboo; Figure 2 It is a schematic diagram of the bamboo anchor rod and horizontal cell section; Figure 3 This is a schematic diagram of the slope effect; In the figure: microbial bamboo slices 1, microbial solidified soil 2, horizontally arranged cell structure 3, bamboo anchoring rods 4, and overall cell structure 5. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] The invention discloses a solidified cell slope protection structure made of natural bamboo pieces and microbial strains and a preparation method thereof, which solves the problems of poor environmental affinity, susceptibility to damage by plant roots and microorganisms, easy aging when exposed to sunlight and difficulty in local repair.

[0023] This patent discloses a bamboo and microbial solidified cell slope protection structure and preparation method, the main steps of which include: preparation of microbial liquid and cementing liquid, bamboo material processing, slope cell layout design, slope cell groove excavation, bamboo cell layout, bamboo anchor rod production and burial, cell structure molding and microbial solidification, maintenance and repair.

[0024] 1. Preparation of microbial culture and cementing liquid: Bacillus pasteurianus is a strain that can enrich calcium ions in the environment to generate calcium carbonate precipitation through bacterial mineralization reaction. The preparation work mainly involves the configuration of microbial materials required for the subsequent plan. First, prepare the culture medium and inoculate Bacillus pasteurianus. Then, expand and cultivate the culture medium strains under constant temperature and oxygen injection conditions. Cultivate in a constant temperature shaker for 32 hours to obtain microbial culture liquid. Prepare a mixture of 1.5 mol / L calcium chloride and urea solution to form a cementing liquid. Finally, store the microbial culture liquid and cementing liquid at 0-5 degrees Celsius.

[0025] 2. Processing of bamboo materials: Bamboo is a kind of bamboo with a short growth cycle, rapid growth, fast maturity and high yield. It is strong and tough, durable, high strength and light weight. It is widely used in construction, papermaking, agriculture and other fields. Select thick bamboo with a diameter greater than 10cm. After felling and collection, remove impurities, remove knots, cut, soak and dry them first, and split them into bamboo strips with a certain curvature. Ensure that the main inner arc angle of the bamboo strip structure after treatment is 90~120 degrees and the width is not less than 3cm.

[0026] Then, sterilization and antiseptic treatment is carried out. First, 8% to 15% quicklime aqueous solution is prepared and placed in the treatment pool. Then, the bamboo strips are soaked in the pool for 24 to 28 hours in batches. After soaking, they are taken out and rinsed with clean water. A small amount of quicklime can be added during the soaking process, and air is filled into the soaking pool and stirred appropriately to ensure that 50 to 120 kg of lime is added for every 500 kg of bamboo chips treated. The bamboo strips after soaking and rinsing are placed in the sun for 2 to 3 days. After drying, the surface of the bamboo strips is sprayed with 1.5 mol / L concentration of microbial bacterial liquid and binder liquid. Spray 3 times with an interval of 24 hours. The microbial mineralization action is used to form a dense mineral protective layer on the surface of the bamboo, thereby improving the corrosion resistance and antibacterial ability of the bamboo chips, and obtaining microbial bamboo chips; 3. Slope cell layout design: Determine the range of the slope to be treated, obtain information such as the regional slope, slope length, and slope soil type, and design triangular cells. For a slope, multiple layers of horizontal bamboo slices and oblique bamboo slices need to be laid to form multiple triangular grid structures; when laying, the spacing between the upper and lower horizontal bamboo slices on the slope (30~100cm), generally the slope is about the greater, the spacing is set about the greater, and the angle of the oblique bamboo slice relative to the horizontal bamboo slice is designed according to the spacing (30~45 degrees). The insertion depth and position of the bamboo anchor rod are designed below the horizontal bamboo slice position, and generally one is set every 1~5m horizontally. After determining the plan, process the bamboo slices according to the design size.

[0027] 4. Cell trench excavation and microbial bamboo chip layout: Mark the cell position on the slope according to the design plan, first excavate a horizontal trench with a depth of 3~8cm, bury the microbial bamboo chips with the inside facing upward, and ensure that 1 / 2 of the length of the microbial bamboo chips is exposed above the soil. Then excavate an inclined trench and bury the oblique microbial bamboo chips with the inside of the microbial bamboo chips facing upward. After burying, fill the soil and expose 1 / 2 of the length above the soil. When laying out, first place the horizontal bamboo chips, then the oblique bamboo chips. The whole is laid out along the slope, on a surface along the slope.

[0028] 5. Production and burial of bamboo anchor rods: Use a perforating ring cutter to make holes with a depth of 60-120cm and a width of 3-8m according to the designed position. Overlap 3-6 bamboo pieces of similar width to form bamboo anchor rods and insert them into the holes. The bamboo anchor rods are 6-9cm higher than the slope surface. After completion, fill the holes with soil in layers and ensure that the filled soil is dense. After processing, ensure that all the excavated soil on the slope is filled in situ, and the excess soil is evenly prevented from being grooved on the horizontal bamboo pieces. The bamboo anchor rods do not penetrate the horizontal bamboo pieces. Through the relationship of upper and lower contact supports, multiple anchor rods support the horizontal bamboo pieces.

[0029] 6. Cell structure forming and microbial solidification: Use a spray pot to load microbial liquid and cementing liquid respectively. First, spray all horizontal and bamboo pieces and buried soil with liquid. You can use an atomizing spray pot, adjust the spraying pressure to medium, and spray at a distance of 10~20cm to ensure that all microbial bamboo pieces and buried soil on the slope are fully sprayed and no obvious runoff is formed. Spray the cementing liquid 2~3 hours after the spraying is completed. The spraying method is the same as above. Then spray the microbial liquid and cementing liquid at the contact position of the horizontal microbial bamboo pieces and the inclined microbial bamboo pieces to ensure that the microbial bamboo pieces and soil at the connection are fully sprayed and solidified together by the microbial liquid. Finally, use a small pressure pump and a low-pressure grouting needle to inject the microbial liquid along the bamboo anchor rod, and inject the cementing liquid after 2~3 hours. The above spraying and grouting methods are repeated 3~7 times according to the slope protection needs.

[0030] 7. Maintenance and repair: After the bamboo and microbial solidification cells for slope protection are constructed, a small amount of water is sprinkled on the entire slope surface, and then regular observations are made every 1 to 3 months. If some cells are damaged, the damaged parts can be removed and the above steps can be repeated directly in the original location to repair and solidify with microbial liquid. The local damage repair operation is simple and does not affect the performance of other parts. The following is a detailed description of the technical solution of this patent in conjunction with the accompanying drawings. Figure 1 It is a schematic diagram of the cross section of the bamboo and the microbial solidified bamboo anchor rods and cells. Figure 2 Schematic diagram of bamboo anchor rod and horizontal cell section. Figure 3 Schematic diagram of slope effect.

[0031] The treated microbial bamboo slices 1, after being soaked in quicklime water and treated by microbial mineralization, the original surface composition and microstructure of the bamboo slices will change, the organic acid on the bamboo surface will be destroyed, the bamboo fiber will be more dense and compact, and a layer of dense mineral precipitation will be formed on the surface, so that it has good durability, corrosion resistance, and resistance to adverse external influences; The microbial solidified soil 2 formed by the microbial mineralization reaction is cemented by calcium carbonate crystals generated by the microbial reaction, which increases the cohesion and internal friction of the soil particles. The treated microbial bamboo pieces 1 and the microbial solidified soil 2 together form a bamboo anchor rod 4 and a cell structure 5 with an overall structure and mechanical properties.

[0032] The horizontally arranged cell structure 3 is an integral structure formed by partially buried bamboo pieces and soil solidified by microbial liquid. Some bamboo pieces will be higher than the slope by a certain distance, playing the role of cell barrier, which can intercept part of the water, so that more runoff water and rainwater can infiltrate on the spot, and will also block some soil particles moving along the slope, which generally plays the role of reducing soil erosion and stabilizing the soil and slope structure.

[0033] The bamboo anchor rod 4 is formed by multi-layer superimposed microbial bamboo pieces and soil solidified by microbial bacterial liquid. The bamboo anchor rod is a reinforcement support method commonly used for slopes. The bamboo anchor rod formed by the present invention has good integrity and tensile and shear resistance, and 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 and reduce slippage along the slope, making the overall cell more stable.

[0034] The horizontally arranged cells and the oblique cells form an overall cell structure 5, which is triangular on the slope surface, partially connected by microbial mineralization reactions, and an overall honeycomb structure composed of triangular cell units. Each unit structure supports each other, which can effectively stabilize the slope surface and reduce soil erosion.

[0035] 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, and 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 filled into the soaking pool and stirred appropriately to ensure that 50 kg of lime is added for every 500 kg of bamboo chips processed; After soaking, the bamboo slices were washed and dried for 2 days to obtain the microbial bamboo slices. Below the microbial bamboo slices buried in the horizontal groove, a bamboo anchor rod was set every 1m horizontally. According to the design position of the bamboo anchor rod, a hole with a depth of 60cm and a width of 3m was processed. Three pieces of microbial bamboo slices were overlapped to form a bamboo anchor rod and inserted into the hole. The bamboo anchor rod was 6cm higher than the slope. After completion, the soil was backfilled in layers in the hole. The microbial liquid was injected along the bamboo anchor rod by low-pressure grouting needle. After 2 hours, the cementing liquid was injected. Specifically, the spraying pressure was adjusted to medium, and the spraying was carried out at a distance of 10cm to ensure that all the microbial bamboo slices and buried soil on the slope were fully sprayed and no obvious runoff was formed. After the spraying was completed, the cementing liquid was sprayed 2 hours later. The spraying method was the same as above. Then the microbial liquid and the cementing liquid were sprayed on the contact position of the horizontal microbial bamboo slices and the inclined microbial bamboo slices to ensure that the microbial bamboo slices and soil at the connection were fully sprayed and solidified by the microbial liquid. Finally, a small pressure pump was used to inject microbial liquid along the bamboo anchor rod using a low-pressure grouting needle, and the cementing liquid was injected 2 hours later. The above spraying and grouting methods were repeated 3 times according to the slope protection requirements.

[0036] The spacing between the microbial bamboo pieces buried in the horizontal groove is 30 cm, the microbial bamboo pieces in the inclined groove are arranged at an angle of 30 degrees relative to the microbial bamboo pieces in the horizontal groove; the depth of the horizontal groove is 3 cm, 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, taken out after soaking and rinsed with clean water, a small amount of quicklime can be added during the soaking process, and air is filled into the soaking pool and stirred appropriately, ensuring that 80 kg of lime is added for every 500 kg of bamboo chips processed, and after soaking, it is washed and then aired for 3 days to obtain microbial bamboo chips. The spacing of the microbial bamboo pieces buried in the horizontal groove is 60cm, and the layout angle of the microbial bamboo pieces in the inclined groove relative to the microbial bamboo pieces in the horizontal groove is 38 degrees; the depth of the horizontal groove is 5cm, and a bamboo anchoring rod is set horizontally every 3m below the microbial bamboo pieces buried in the horizontal groove. According to the designed position of the bamboo anchoring rod, a hole with a depth of 80cm and a width of 5m is processed, and 4 pieces of microbial bamboo pieces are overlapped to form a bamboo anchoring rod and inserted into the hole, and the bamboo anchoring rod is 7cm higher than the slope surface. After completion, the hole is backfilled with soil in layers Soil, microbial liquid is injected along the bamboo anchor rod by low-pressure grouting needle, and the cementing liquid is injected 2.5 hours later. Specifically, the spraying pressure is adjusted to medium, and the spraying is carried out at a distance of 15 cm to ensure that all microbial bamboo pieces and buried soil on the slope are fully sprayed and no obvious runoff is formed. After spraying, the cementing liquid is sprayed 2.5 hours later. The spraying method is the same as above. Then the microbial liquid and the cementing liquid are sprayed on the contact position of the horizontal microbial bamboo pieces and the inclined microbial bamboo pieces to ensure that the microbial bamboo pieces and soil at the connection are fully sprayed and solidified by the microbial liquid. Finally, a small pressure pump is used to inject microbial liquid along the bamboo anchor rod by low-pressure grouting needle, and the cementing liquid is injected 2.5 hours later. The above spraying and grouting methods are repeated 5 times according to the needs of slope protection.

[0037] 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, and 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 filled into the soaking pool and stirred appropriately, ensuring that 120 kg of lime is added for each 500 kg of bamboo chips to be treated. After the completion, it is washed and then aired for 3 days to obtain the microbial bamboo chips. The spacing of the microbial bamboo chips buried in the horizontal groove is 100 cm, and the layout angle of the microbial bamboo chips in the inclined groove relative to the microbial bamboo chips in the horizontal groove is 45 degrees; the depth of the horizontal groove is 8 cm, and below the microbial bamboo chips buried in the horizontal groove, a bamboo anchoring rod is set horizontally every 5 m, and a hole with a depth of 120 cm and a width of 8 m is processed according to the designed position of the bamboo anchoring rod. Six pieces of microbial bamboo chips are overlapped to form a bamboo anchoring rod and inserted into the hole, and the bamboo anchoring rod is 9 cm higher than the slope. After completion, the hole is backfilled with soil in layers.

[0038] The microbial liquid was injected along the bamboo anchor rod by low-pressure grouting needle, and the cementing liquid was injected 3 hours later. Specifically, the spraying pressure was adjusted to medium, and the spraying was carried out at a distance of 20 cm to ensure that all the microbial bamboo pieces and buried soil on the slope were fully sprayed and no obvious runoff was formed. The cementing liquid was sprayed 3 hours after the spraying was completed. The spraying method was the same as above. The microbial liquid and the cementing liquid were sprayed again at the contact position of the horizontal microbial bamboo pieces and the inclined microbial bamboo pieces to ensure that the microbial bamboo pieces and soil at the connection were fully sprayed and solidified together by the microbial liquid. Finally, a small pressure pump was used to inject the microbial liquid along the bamboo anchor rod by low-pressure grouting needle, and the cementing liquid was injected 3 hours later. The above spraying and grouting methods were repeated 7 times according to the slope protection needs.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A method for preparing a bamboo and microbial solidified cell slope protection structure, characterized in that: include, S1, processing and splitting bamboo into arc-shaped bamboo strip structures, and performing sterilization and antiseptic treatment, spraying microbial liquid and bonding liquid on the surface of the bamboo strip structures after sterilization and antiseptic treatment to obtain microbial bamboo strips; S2, designing a cell structure in the area of ​​the slope to be treated, excavating horizontal grooves and inclined grooves in the cell structure, burying microbial bamboo chips in the horizontal grooves and the inclined grooves respectively, and inserting bamboo anchoring rods under the microbial bamboo chips buried in the horizontal grooves; S3, spray the microbial liquid and the cementing liquid in turn on the microbial bamboo pieces and bamboo anchoring rods in the horizontal grooves and inclined grooves in the cell structure and the soil exposed in the cell structure; then inject the microbial liquid and the cementing liquid along the bamboo anchoring rods in turn, observe and maintain regularly, and obtain the bamboo and microbial solidified cell slope protection structure.

2. The method for preparing a bamboo and microorganism solidified cell slope protection structure according to claim 1, characterized in that: The specific process of processing and splitting the bamboo to form an arc-shaped bamboo strip structure in S1 is as follows: After the bamboo is subjected to impurity removal, node removal, cutting, soaking and drying treatments, it is segmented to form a bamboo strip structure with an arc; 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 3 cm.

3. The method for preparing a bamboo and microorganism solidified cell slope protection structure according to claim 1, characterized in that: The specific process of sterilization and antiseptic treatment in S1 is as follows: The bamboo strip structure is soaked in a quicklime aqueous solution with a concentration of 8% to 15% for 24 to 28 hours. After the soaking is completed, it is washed and then aired for 2 to 3 days to obtain the microbial bamboo chips.

4. The method for preparing a bamboo and microorganism solidified cell slope protection structure according to claim 1, characterized in that: The microbial liquid is obtained by inoculating Bacillus pasteurianus in a bacterial culture medium and culturing the culture medium for 32 hours under constant temperature and oxygen injection conditions.

5. The method for preparing a bamboo and microorganism solidified cell slope protection structure according to claim 1, characterized in that: The binder liquid 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 microorganism solidified cell slope protection structure according to claim 1, characterized in that: The spacing of the microbial bamboo chips buried in the horizontal groove in S2 is 30-100 cm, and the layout angle of the microbial bamboo chips in the inclined groove relative to the microbial bamboo chips in the horizontal groove is 30-45 degrees; the depth of the horizontal groove is 3-8 cm, and the cell is a triangular structure.

7. The method for preparing a bamboo and microorganism solidified cell slope protection structure according to claim 1, characterized in that: The microbial bamboo chips are buried in the horizontal groove in S2 with the inner side facing upward, so that 1 / 2 of the length of the microbial bamboo chips is exposed on the soil surface; The microbial bamboo pieces are buried in the inclined groove with the inner side facing upward obliquely, so that 1 / 2 of the length of the microbial bamboo pieces is exposed on the soil surface.

8. The method for preparing a bamboo and microorganism solidified cell slope protection structure according to claim 1, characterized in that: The specific process of inserting the bamboo anchor rod below the microbial bamboo slice buried in the horizontal groove in S2 is as follows: Below the microbial bamboo chips buried in the horizontal groove, a bamboo anchoring rod is set horizontally every 1~5m. According to the designed position of the bamboo anchoring rod, a hole with a depth of 60~120cm and a width of 3~8m is processed. 3~6 pieces of microbial bamboo chips are overlapped to form a bamboo anchoring rod and inserted into the hole. The bamboo anchoring rod is 6~9cm higher than the slope surface. After completion, the hole is backfilled with soil in layers.

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

10. A bamboo and microorganism solidified cell slope protection structure, characterized in that: The invention is prepared based on the preparation method of a bamboo and microorganism solidified cell slope protection structure as described in any one of claims 1 to 9.

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