Island and reef ecological slope structure and technology based on bionic mineralization and microbial self-repair

Abstract

The present invention belongs to the technical field of geotechnical engineering and marine engineering, and in particular to an island reef ecological bank slope structure and process based on bionic mineralization and microbial self-repair, including a calcareous sand backfill layer fixed in sequence from bottom to top; a bionic mineralized calcareous sand reinforcement layer, which is prepared by spraying a bionic mineralizing liquid A and a bionic mineralizing liquid B on the calcareous sand to mineralize the calcareous sand; an ecological self-repairing calcareous sand concrete layer, which includes calcareous sand, cement, fly ash, gravel, seawater, admixtures, microbial self-repairing particles, and marine plant grass seeds; and a pebble layer. And a construction process for an island reef ecological bank slope structure based on bionic mineralization and microbial self-repair. The present invention has good reinforcement effect, little impact on the environment, and has the function of self-repairing concrete cracks, and can extend the service life of the bank slope structure.

Description

Technical Field

[0001] The present invention belongs to the technical field of geotechnical engineering and marine engineering, and in particular relates to an island reef ecological slope structure and process based on bionic mineralization and microbial self-repair. Background Art

[0002] In the construction of islands and reefs in the South China Sea, embankment reinforcement is an important project. Due to the special geographical location of islands and reefs, there are many problems in transporting geotechnical materials from inland for embankment construction. First, the transportation cost is high, which requires a lot of manpower, material and financial resources. Secondly, the long transportation time may delay the progress of the project. Furthermore, long-distance transportation will also cause waste of resources, and may have adverse effects on marine life and damage the marine ecological environment during transportation and construction. Therefore, the reinforcement of embankments on islands and reefs in the South China Sea mainly uses calcareous sand for backfilling, which can achieve high utilization efficiency of original materials and effectively reduce costs.

[0003] However, when calcium sand is used alone to reinforce the embankment, the calcium sand particles are irregular in shape, porous and have low strength, and are easily broken when subjected to force, resulting in insufficient stability of the slope structure. In addition, due to frequent ocean dynamics such as waves, cracks will appear in the concrete layer of the embankment, which will also affect the internal stability of the embankment.

[0004] In summary, there is an urgent need for a bank reinforcement structure and a construction method that has good reinforcement effect, little impact on the environment, is beneficial to marine ecology and can effectively deal with the problem of concrete cracks, in order to meet the needs of bank slope protection and ecological restoration of islands and reefs in the South China Sea. Therefore, we propose an island and reef ecological bank slope structure and process based on bionic mineralization and microbial self-repair. Summary of the invention

[0005] The purpose of the present invention is to provide an island reef ecological slope structure and process based on bionic mineralization and microbial self-repair to solve the above problems.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The island reef ecological slope structure based on bionic mineralization and microbial self-repair includes the following fixed from bottom to top:

[0008] Calcareous sand backfill layer;

[0009] A bionic mineralized calcareous sand reinforcement layer, wherein the bionic mineralized calcareous sand reinforcement layer is prepared by spraying a bionic mineralizing liquid A and a bionic mineralizing liquid B onto the calcareous sand to mineralize the calcareous sand;

[0010] An ecological self-repairing calcareous sand concrete layer, wherein the ecological self-repairing calcareous sand concrete layer comprises calcareous sand, cement, fly ash, crushed stone, seawater, admixtures, microbial self-repairing particles, and marine plant grass seeds;

[0011] The microbial self-repairing particles are used to repair cracks generated in the ecological self-repairing calcareous sand concrete layer;

[0012] Pebble layer.

[0013] Optionally, the bionic mineralizing liquid A and the bionic mineralizing liquid B are used in a ratio of 1:1;

[0014] The bionic mineralization liquid A includes a calcium chloride solution and an aspartic acid solution, the concentrations of the calcium chloride solution and the aspartic acid solution are both 0.8 mol / L to 1 mol / L, and the volume ratio is 1:1. The bionic mineralization liquid B is a sodium carbonate solution, and the concentration of the sodium carbonate solution is 0.8 mol / L to 1 mol / L.

[0015] Optionally, the ecological self-repairing calcareous sand concrete layer includes an ecological self-repairing calcareous sand concrete primary spraying layer fixed on the surface of the bionic mineralized calcareous sand reinforcement layer, and the spraying thickness of the ecological self-repairing calcareous sand concrete primary spraying layer is 5 to 7 cm;

[0016] A glass fiber grid layer fixed on the surface of the primary sprayed layer of the ecological self-repairing calcareous sand concrete;

[0017] The ecological self-repairing calcareous sand concrete spraying layer is fixed on the surface of the glass fiber grid layer, the spraying thickness of the ecological self-repairing calcareous sand concrete spraying layer is 8 to 10 cm, and the pebble layer is fixed on the surface of the ecological self-repairing calcareous sand concrete spraying layer.

[0018] Optionally, a plurality of U-shaped anchoring devices are provided on the glass fiber grid layer, and the bottom of the U-shaped anchoring device penetrates the ecological self-repairing calcareous sand concrete primary spraying layer and is anchored to the bionic mineralized calcareous sand reinforcement layer.

[0019] Optionally, the U-shaped anchoring device is made of glass fiber reinforced plastic.

[0020] Optionally, the shell of the microbial self-repairing particles is made of epoxy resin, and the interior is filled with island and reef in-situ urease-producing microbial bacterial liquid, reinforcement liquid and nutrients.

[0021] A construction process of an island reef ecological slope structure based on bionic mineralization and microbial self-repair, based on the above-mentioned island reef ecological slope structure based on bionic mineralization and microbial self-repair, comprises the following steps:

[0022] Step 1: backfilling the calcareous sand by layered backfilling and compaction to form the calcareous sand backfill layer;

[0023] Step 2: Repeat step 1 to continue backfilling the calcareous sand, spray the bionic mineralization liquid A after each layer of calcareous sand is backfilled and compacted, and spray the bionic mineralization liquid B after an interval of 20 to 30 minutes to uniformly mineralize the calcareous sand, and repeat for 10 to 15 times;

[0024] Step 3: obtaining microbial strains with biomineralization ability in the island and reef areas, and preparing the microbial self-repairing particles, mixing them with calcareous sand, cement, fly ash, gravel, seawater, admixtures, and marine plant grass seeds to prepare ecological self-repairing calcareous sand concrete, and spraying and fixing the ecological self-repairing calcareous sand concrete on the surface of the bionic mineralized calcareous sand reinforcement layer to form the ecological self-repairing calcareous sand concrete layer;

[0025] Step 4: Laying the pebble layer on the surface of the ecological self-repairing calcareous sand concrete layer.

[0026] Optionally, in step 1, the backfill thickness of each layer of the calcareous sand is controlled within the range of 30-50 cm, and the calcareous sand is evenly spread using a loader and then compacted using a small roller.

[0027] Optionally, in step 4, the pebble layer is laid immediately after the construction of the ecological self-repairing calcareous sand concrete layer is completed, so that good bonding is formed between the pebbles and the concrete.

[0028] Compared with the prior art, the present invention has the following advantages and technical effects:

[0029] Compared with traditional technology, the present invention makes full use of the calcareous sand resources of islands and reefs, avoids the high cost, long time and waste of resources in inland material transportation, reduces engineering costs, and realizes efficient use of original materials. The bionic mineralization technology of adding bionic mineralization liquid A and bionic mineralization liquid B is used to reinforce the calcareous sand, solve the problem of easy breakage of calcareous sand, and the microbial self-repairing particles set in the ecological self-repairing calcareous sand concrete layer can repair concrete cracks and prevent seawater from infiltrating and eroding. With good performance materials and processes such as anti-seawater erosion, it adapts to the island and reef environment and prolongs the service life of the slope structure. Pebbles can enhance the stability of the slope structure and effectively resist external forces such as waves and water flow. The bionic mineralization technology of the present invention has the characteristics of immediate response, shortens the crystal nucleation growth time; stable performance, reduces costs and has low dependence on environmental factors, and has strong universal application; no by-products are generated, and additives can be recycled and reused, which has both environmental protection and economic benefits. In addition, the construction process steps are clear, the operation is simple, the equipment and materials have good adaptability, improve construction efficiency, shorten the construction period, and reduce construction difficulty and cost. The present invention has good reinforcement effect, little impact on the environment, and has the function of self-repairing concrete cracks, thereby extending the service life of the bank slope structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0031] Figure 1 It is a structural diagram of the present invention;

[0032] Figure 2 It is a process flow chart of the present invention;

[0033] Among them, 1. calcareous sand backfill layer; 2. bionic mineralized calcareous sand reinforcement layer; 3. glass fiber grid layer; 5. U-shaped anchor device; 6. pebble layer; 8. ecological self-repairing calcareous sand concrete primary spraying layer; 9. ecological self-repairing calcareous sand concrete secondary spraying layer. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1 to Figure 2 The present invention discloses an island reef ecological slope structure based on bionic mineralization and microbial self-repair, including:

[0037] Calcareous sand backfill layer 1;

[0038] A bionic mineralized calcareous sand reinforcement layer 2, wherein the bionic mineralized calcareous sand reinforcement layer 2 is prepared by spraying a bionic mineralizing liquid A and a bionic mineralizing liquid B onto the calcareous sand to mineralize the calcareous sand;

[0039] Ecological self-repairing calcareous sand concrete layer, the ecological self-repairing calcareous sand concrete layer includes calcareous sand, cement, fly ash, crushed stone, seawater, admixture, microbial self-repairing particles, and marine plant grass seeds;

[0040] Microbial self-repairing particles are used to repair cracks in ecological self-repairing calcareous sand concrete layers;

[0041] Pebble layer6.

[0042] Compared with traditional technology, the present invention makes full use of the calcareous sand resources of islands and reefs, avoids the high cost, long time and waste of resources in inland material transportation, reduces engineering costs, and realizes efficient use of original materials. The bionic mineralization technology of adding bionic mineralization liquid A and bionic mineralization liquid B is used to reinforce the calcareous sand, solve the problem of easy breakage of calcareous sand, and the microbial self-repairing particles set in the ecological self-repairing calcareous sand concrete layer can repair concrete cracks and prevent seawater from infiltrating and eroding. With good performance materials and processes such as anti-seawater erosion, it adapts to the island and reef environment and prolongs the service life of the slope structure. Pebbles can enhance the stability of the slope structure and effectively resist external forces such as waves and water flow. The bionic mineralization technology of the present invention has the characteristics of immediate response, shortens the crystal nucleation growth time; stable performance, reduces costs and has low dependence on environmental factors, and has strong universal application; no by-products are generated, and additives can be recycled and reused, which has both environmental protection and economic benefits. In addition, the construction process steps are clear, the operation is simple, the equipment and materials have good adaptability, improve construction efficiency, shorten the construction period, and reduce construction difficulty and cost.

[0043] As an optional implementation, the ratio of biomimetic mineralization liquid A to biomimetic mineralization liquid B is 1:1;

[0044] The biomimetic mineralization liquid A includes calcium chloride solution and aspartic acid solution, the concentrations of the calcium chloride solution and the aspartic acid solution are both 0.8 mol / L to 1 mol / L, and the volume ratio is 1:1. The biomimetic mineralization liquid B is a sodium carbonate solution, and the concentration of the sodium carbonate solution is 0.8 mol / L to 1 mol / L.

[0045] As an optional embodiment, the ecological self-repairing calcareous sand concrete layer includes an ecological self-repairing calcareous sand concrete primary spraying layer 8 fixed on the surface of the bionic mineralized calcareous sand reinforcement layer 2, and the spraying thickness of the ecological self-repairing calcareous sand concrete primary spraying layer 8 is 5 to 7 cm;

[0046] A glass fiber grid layer 3 fixed on the surface of the primary sprayed layer 8 of the ecological self-repairing calcareous sand concrete;

[0047] The ecological self-repairing calcareous sand concrete spraying layer 9 is fixed on the surface of the glass fiber grid layer 3 , and the spraying thickness of the ecological self-repairing calcareous sand concrete spraying layer 9 is 8 to 10 cm. The pebble layer 6 is fixed on the surface of the ecological self-repairing calcareous sand concrete spraying layer 9 .

[0048] As an optional embodiment, a plurality of U-shaped anchoring devices 5 are provided on the glass fiber grid layer 3 , and the bottom of the U-shaped anchoring device 5 penetrates the ecological self-repairing calcareous sand concrete primary spraying layer 8 and the bionic mineralized calcareous sand reinforcement layer 2 for anchoring.

[0049] As an optional embodiment, the U-shaped anchoring device 5 is made of glass fiber reinforced plastic.

[0050] Through the mechanical property test, durability test and crack repair test of ecological self-repairing calcareous sand concrete, the optimal design mix ratio of ecological self-repairing calcareous sand concrete was obtained through comprehensive consideration;

[0051] Optionally, the ecological self-repairing calcareous sand concrete includes the following raw materials in parts by weight: 100 parts of cement, 150-200 parts of calcareous sand, 200-300 parts of crushed stone, 50-100 parts of fly ash, 30-50 parts of seawater, 2-5 parts of microbial self-repairing particles, 0.5-1 part of admixture, and 0.5-2 parts of marine plant grass seeds.

[0052] Configure ecological self-repairing calcareous sand concrete according to the optimal design mix ratio;

[0053] Use a concrete sprayer to initially spray the prepared ecological self-repairing calcareous sand concrete onto the surface of the bionic mineralized calcareous sand reinforcement layer 2 to form an ecological self-repairing calcareous sand concrete initial spray layer 8, with the spraying thickness controlled at 5 to 7 cm;

[0054] When the primary sprayed layer 8 of the ecological self-repairing calcium sand concrete has not yet completely solidified, the glass fiber grid layer 3 is evenly laid on its surface to ensure that the glass fiber grid layer 3 is tightly fitted with the concrete layer; the glass fiber grid layer 3 is composed of a plurality of glass fiber grids, and a U-shaped anchoring device 5 is installed at every ten nodes of the glass fiber grids, and ensure that its position is accurately located at the intersection node of the glass fiber grid;

[0055] After the glass fiber grid layer 3 is laid, the ecological self-repairing calcium sand concrete re-spraying layer 9 is constructed; the concrete preparation and spraying process are the same as the initial spraying, and the spraying thickness is controlled at 8 to 10 cm;

[0056] The fiberglass grid and the U-shaped anchoring device 5 can effectively enhance the overall strength, stability, anti-slip and anti-overturning capabilities of the slope structure.

[0057] As an optional embodiment, the shell of the microbial self-repairing particles is made of epoxy resin, and the interior is filled with island reef in situ urease-producing microbial bacterial liquid, reinforcement liquid and nutrients.

[0058] When the slope structure is in a normal state, the island reef in-situ urease-producing microorganisms in the microbial self-repair particles are in a dry, anoxic environment and in a dormant state. When cracks appear in the concrete, as oxygen and water enter, the microorganisms in the crack area are activated. Subsequently, urease catalyzes the hydrolysis of urea to produce carbonate ions, which combine with calcium ions in the reinforcement fluid to form calcium carbonate precipitates with cementing effects, accurately filling the cracks, repairing the cracks, and restoring the integrity and stability of the slope structure.

[0059] A construction process of an island reef ecological slope structure based on bionic mineralization and microbial self-repair, based on the above-mentioned island reef ecological slope structure based on bionic mineralization and microbial self-repair, comprises the following steps:

[0060] Step 1: backfilling the calcareous sand by layered backfilling and compaction to form a calcareous sand backfill layer 1;

[0061] Step 2: Repeat step 1 and continue to backfill the calcareous sand. After each layer of calcareous sand is backfilled and compacted, spray the bionic mineralization liquid A. After an interval of 20 to 30 minutes, spray the bionic mineralization liquid B to evenly mineralize the calcareous sand. Repeat for 10 to 15 times.

[0062] Step 3: obtaining microbial strains with biomineralization ability in the island and reef areas, and making them into microbial self-repairing particles, mixing them with calcareous sand, cement, fly ash, gravel, seawater, admixtures, and marine plant seeds to obtain ecological self-repairing calcareous sand concrete, and spraying and fixing the ecological self-repairing calcareous sand concrete on the surface of the bionic mineralized calcareous sand reinforcement layer 2 to form an ecological self-repairing calcareous sand concrete layer;

[0063] Step 4: Lay a pebble layer 6 on the surface of the ecological self-repairing calcareous sand concrete layer.

[0064] As an optional implementation, in step one, the backfill thickness of each layer of calcareous sand is controlled within the range of 30-50 cm, and the calcareous sand is evenly spread using a loader and then compacted using a small roller.

[0065] As an optional implementation, in step 4, the pebble layer 6 is laid immediately after the construction of the ecological self-repairing calcareous sand concrete layer is completed, so that good bonding is formed between the pebbles and the concrete.

[0066] When constructing the calcareous sand backfill layer 1, a layered backfill method is adopted, and the thickness of each backfill layer is controlled within the range of 30-50 cm to ensure the backfill quality;

[0067] During the backfilling process, a loader is used to evenly spread the calcareous sand on the base, and then a small roller is used to compact it to ensure that the density of the backfill layer meets the design requirements;

[0068] Continue to backfill with calcareous sand;

[0069] Through the bionic mineralized calcareous sand test, the optimal formula and dosage of bionic mineralized liquid A and bionic mineralized liquid B were obtained;

[0070] As an optional implementation:

[0071] Bionic mineralization solution A: The concentration of calcium chloride solution and aspartic acid solution are both 1 mol / L;

[0072] Bionic mineralization liquid B: sodium carbonate solution 1 mol / L;

[0073] The volume ratio of biomimetic mineralization liquid A to biomimetic mineralization liquid B is 1:1

[0074] In a single cycle, the ratio of the injection volume of bionic mineralizing liquid A and bionic mineralizing liquid B to the pore volume of calcareous sand is consistent and is 0.7.

[0075] According to the formula ratio and dosage obtained in the experiment, the aspartic acid solution and the calcium chloride solution are first uniformly mixed to form a biomimetic mineralization liquid A, and then the mixed liquid is uniformly sprayed on the calcareous sand, and then a sodium carbonate solution (i.e., biomimetic mineralization liquid B) having an equal volume to the mixed liquid is sprayed, and the cycle is repeated 10 to 15 times; in each cycle, the sodium carbonate solution is sprayed again after the mixed liquid is sprayed for 20 to 30 minutes to ensure sufficient reaction time between the solutions; the speed and flow rate are strictly controlled during the spraying process to ensure uniform mineralization of the calcareous sand;

[0076] Through in-situ soil sampling, identification and analysis in island and reef areas, the community distribution and species diversity of indigenous microorganisms are explored, and in-situ urease-producing microorganisms with biomineralization ability are screened as starting strains; calcareous sand, soil, seawater and biological surface samples are collected on islands and reefs in the South China Sea through sterile samplers, and enrichment culture is carried out using culture media containing specific nitrogen sources (urea) and carbon sources (glucose) and simulating island and reef environmental elements (salinity, pH value and temperature). Appropriate temperature, ventilation mode and light cycle are set to obtain microbial strains adapted to the island and reef environment, and further expand the culture to obtain the in-situ urease-producing microbial culture liquid of islands and reefs;

[0077] The urease-producing microbial liquid produced in situ on the islands and reefs, the reinforcement liquid and nutrients are evenly mixed in proportion and injected into a shell made of epoxy resin. The shell is completely solidified through a curing process to form microbial self-repairing particles. The particles can effectively play the role of self-repairing cracks in concrete.

[0078] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0079] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. The island reef ecological slope structure based on bionic mineralization and microbial self-repair is characterized by: Including fixed from bottom to top: Calcareous sand backfill layer (1); A bionic mineralized calcareous sand reinforcement layer (2), wherein the bionic mineralized calcareous sand reinforcement layer (2) is prepared by spraying a bionic mineralizing liquid A and a bionic mineralizing liquid B onto the calcareous sand to mineralize the calcareous sand; An ecological self-repairing calcareous sand concrete layer, wherein the ecological self-repairing calcareous sand concrete layer comprises calcareous sand, cement, fly ash, crushed stone, seawater, admixtures, microbial self-repairing particles, and marine plant grass seeds; The microbial self-repairing particles are used to repair cracks generated in the ecological self-repairing calcareous sand concrete layer; Pebble layer (6).

2. The island reef ecological slope structure based on bionic mineralization and microbial self-repair according to claim 1 is characterized by: The bionic mineralizing liquid A and the bionic mineralizing liquid B are used in a ratio of 1:1; The bionic mineralization liquid A includes a calcium chloride solution and an aspartic acid solution, the concentrations of the calcium chloride solution and the aspartic acid solution are both 0.8 mol / L to 1 mol / L, and the volume ratio is 1:

1. The bionic mineralization liquid B is a sodium carbonate solution, and the concentration of the sodium carbonate solution is 0.8 mol / L to 1 mol / L.

3. The island reef ecological slope structure based on bionic mineralization and microbial self-repair according to claim 1 is characterized by: The ecological self-repairing calcareous sand concrete layer comprises an ecological self-repairing calcareous sand concrete primary spraying layer (8) fixed on the surface of the bionic mineralized calcareous sand reinforcement layer (2), and the spraying thickness of the ecological self-repairing calcareous sand concrete primary spraying layer (8) is 5 to 7 cm; A glass fiber grid layer (3) fixed on the surface of the ecological self-repairing calcareous sand concrete primary spraying layer (8); The ecological self-repairing calcareous sand concrete spraying layer (9) is fixed on the surface of the glass fiber grid layer (3), the spraying thickness of the ecological self-repairing calcareous sand concrete spraying layer (9) is 8 to 10 cm, and the pebble layer (6) is fixed on the surface of the ecological self-repairing calcareous sand concrete spraying layer (9).

4. The island reef ecological slope structure based on bionic mineralization and microbial self-repair according to claim 3 is characterized by: A plurality of U-shaped anchoring devices (5) are arranged on the glass fiber grid layer (3), and the bottom of the U-shaped anchoring device (5) penetrates the ecological self-repairing calcareous sand concrete primary spraying layer (8) and is anchored to the bionic mineralized calcareous sand reinforcement layer (2).

5. The island reef ecological slope structure based on bionic mineralization and microbial self-repair according to claim 4 is characterized by: The U-shaped anchoring device (5) is made of glass fiber reinforced plastic.

6. The island reef ecological slope structure based on bionic mineralization and microbial self-repair according to claim 1 is characterized by: The shell of the microbial self-repairing particle is made of epoxy resin, and the interior is filled with island reef in-situ urease-producing microbial bacterial liquid, reinforcement liquid and nutrients.

7. A construction process for an island reef ecological slope structure based on bionic mineralization and microbial self-repair, according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: backfilling calcareous sand by layered backfilling and compaction to form the calcareous sand backfill layer (1); Step 2: Repeat step 1 to continue backfilling the calcareous sand, spray the bionic mineralization liquid A after each layer of calcareous sand is backfilled and compacted, and spray the bionic mineralization liquid B after an interval of 20-30 minutes to uniformly mineralize the calcareous sand, and repeat for 10-15 times; Step 3: obtaining microbial strains with biomineralization ability in the island and reef areas, and preparing the microbial self-repairing particles, mixing them with calcareous sand, cement, fly ash, gravel, seawater, admixtures, and marine plant seeds to prepare ecological self-repairing calcareous sand concrete, and spraying and fixing the ecological self-repairing calcareous sand concrete on the surface of the bionic mineralized calcareous sand reinforcement layer (2) to form the ecological self-repairing calcareous sand concrete layer; Step 4: laying the pebble layer (6) on the surface of the ecological self-repairing calcareous sand concrete layer.

8. The construction process of the island reef ecological slope structure based on bionic mineralization and microbial self-repair according to claim 7 is characterized by: In the step 1, the backfill thickness of each layer of the calcareous sand is controlled within the range of 30-50 cm. The calcareous sand is evenly spread using a loader and then compacted using a small roller.

9. The construction process of the island reef ecological slope structure based on bionic mineralization and microbial self-repair according to claim 7 is characterized by: In the step 4, the pebble layer (6) is laid immediately after the construction of the ecological self-repairing calcareous sand concrete layer is completed, so that good adhesion is formed between the pebbles and the concrete.

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