Side slope biomineralization protection system and method based on double-response type signal capsule

Abstract

The invention discloses a side slope biomineralization protection system and method based on a double-response type signal capsule, and the method comprises the steps: preparing the double-response type signal capsule, a germination capsule and a reaction capsule respectively, a wall material of the double-response type signal capsule is obtained by mixing poly (N-isopropylacrylamide) and xanthan gum according to a preset proportion; mixing the double-response signal capsule, the germination capsule and the reaction capsule with graded fine sand and chopped basalt fiber to obtain a capsule-aggregate mixture; the capsule-aggregate mixture is laid on the surface of the slope, planting soil is covered, vegetation is planted, and when the preset temperature-water content condition is met, slope time sequence repairing is triggered. According to the scheme, the temperature and the moisture can be responded at the same time, and the complex climatic environment can be accurately adapted.

Description

Technical Field

[0001] This application relates to the field of ecological protection technology in geotechnical engineering, and in particular to a slope biomineralization protection system and method based on dual-response signal capsules. Background Technology

[0002] In the field of slope ecological protection, the split-type adaptive biomineralization capsule system solves the problems of poor controllability and low material utilization in traditional microbial induced calcium carbonate precipitation (MICP) technology through a three-stage time-series release mechanism of "signal-germination-response". Among them, the signal capsule, as the "first switch" for triggering remediation, has its wall material's responsiveness directly determining the initiation accuracy of the entire mineralization process. Existing signal capsule wall materials mostly use single low-concentration water-sensitive polymers such as xanthan gum, which can only determine whether rupture and release nutrient signals based on water infiltration, exhibiting significant technical limitations.

[0003] 1. Response distortion under extreme temperatures: In hot and arid regions, single water-sensitive wall materials are prone to accelerated aging and increased hydrophobicity due to high temperatures. Even if the amount of rainwater infiltration reaches the threshold, it is difficult to break quickly, resulting in a lag in the release of nutrient signals and missing the best time for microbial germination. In cold and freeze-thaw regions, the low temperature environment will reduce the toughness of the wall material and increase its crack sensitivity. A small amount of snowmelt water can trigger cracking, causing premature consumption of nutrients. There will be insufficient nutrients to support the microbial response during subsequent rainfall.

[0004] 2. High false trigger rate under complex climate: When faced with complex climates such as short-term rain showers and sudden changes in diurnal temperature, a single water-sensitive wall material cannot distinguish between "effective repair moisture" (such as continuous rainfall) and "ineffective interference moisture" (such as short-term dew and a small amount of snow melting), which is prone to false triggering. This leads to the false release of nutrient signals, which not only wastes repair materials, but also disrupts the temporal coordination of "signal-germination-response" and reduces the efficiency of mineralization repair.

[0005] Therefore, there is an urgent need for a dual-response signal capsule wall material that can respond to both temperature and moisture and accurately adapt to complex climatic environments to solve the above-mentioned technical problems. Summary of the Invention

[0006] The main objective of this application is to provide a slope biomineralization protection system and method based on dual-response signal capsules, aiming to solve the technical problems in related technologies that use a single low-concentration water-sensitive polymer such as xanthan gum, which can only determine whether rupture and release nutrient signals by the amount of water infiltration, and cannot respond to temperature and moisture at the same time, and is not suitable for complex climatic environments.

[0007] To achieve the above objectives, this application provides a slope biomineralization protection method based on dual-response signal capsules, the method comprising:

[0008] Dual-response signal capsules, germination capsules, and reaction capsules were prepared respectively. The wall material of the dual-response signal capsule was obtained by mixing poly(N-isopropylacrylamide) and xanthan gum in a preset ratio.

[0009] Dual-response signal capsules, germination capsules, and reaction capsules are mixed with graded fine sand and short-cut basalt fibers to obtain capsule-aggregate mixtures;

[0010] The capsule-aggregate mixture is laid on the slope surface, covered with topsoil and planted with vegetation. When the preset temperature and moisture content conditions are reached, the slope sequential repair is triggered.

[0011] In one possible embodiment of this application, the preparation steps of the dual-response signal capsule include:

[0012] Poly-N-isopropylacrylamide and xanthan gum are mixed in a preset ratio to obtain a composite wall material;

[0013] The composite wall material is added to deionized water to prepare a 10% (w / w) composite wall material solution.

[0014] A dual-response signal capsule was obtained by dripping the core material solution into the composite wall material solution and then solidifying it. The core material solution was made of easily soluble nutrients and trace amounts of fluorescent tracers.

[0015] In one possible embodiment of this application, poly(N-isopropylacrylamide) and xanthan gum are mixed in a preset ratio to obtain a composite wall material, comprising:

[0016] Poly(N-isopropylacrylamide) powder and xanthan gum powder are mixed at a mass ratio of 1:1 to obtain a composite wall material, wherein the mass fraction of xanthan gum is 2%-4%.

[0017] In one possible embodiment of this application, the preparation step of the germination capsule includes:

[0018] Gelatin and xanthan gum were mixed at a mass ratio of 2:1 to obtain the germination capsule wall material;

[0019] Pasteurella spores and bentonite were mixed at a mass ratio of 1:4 to obtain the core material of the germination capsule.

[0020] The germination capsule wall material and the germination capsule core material are mixed using a drip-curing method to obtain the germination capsule.

[0021] In one possible embodiment of this application, a dual-response signal capsule, a germination capsule, and a reaction capsule are mixed with graded fine sand and short-cut basalt fibers to obtain a capsule-aggregate mixture, comprising:

[0022] Mix dual-response signal capsules, germination capsules, and reaction capsules in a mass ratio of 1:2:3 to obtain a mixed capsule;

[0023] Mix the capsules with graded fine sand and short-cut basalt fibers to obtain a capsule-aggregate mixture.

[0024] In one possible implementation of this application, a capsule-aggregate mixture is laid on the slope surface, covered with topsoil, and planted with vegetation. When preset temperature and moisture content conditions are met, sequential slope restoration is triggered, including:

[0025] Lay the capsule-aggregate mixture on the slope surface, cover it with topsoil and plant vegetation;

[0026] Slope sequential repair is triggered when the soil temperature on the slope is ≤32℃ and the soil moisture content is ≥12%.

[0027] In one possible embodiment of this application, the thickness of the capsule-aggregate mixture is 10-15cm, the compaction degree is ≥90%, and the thickness of the planting soil covering is 5-8cm.

[0028] In one possible embodiment of this application, the average particle size of the dual-response signal capsule is 100-150 μm, the average particle size of the germination capsule is 150-200 μm, and the average particle size of the reaction capsule is 200-250 μm.

[0029] In one possible embodiment of this application, the core material of the reaction capsule comprises calcium chloride and a pH buffer, wherein the calcium chloride accounts for 95% by mass and the pH buffer is a mixture of potassium dihydrogen phosphate and dipotassium hydrogen phosphate, accounting for 5% by mass.

[0030] This application also provides a slope biomineralization protection system based on dual-response signal capsules, comprising:

[0031] The preparation module is used to prepare dual-response signal capsules, germination capsules and reaction capsules respectively. The wall material of the dual-response signal capsule is obtained by mixing poly(N-isopropylacrylamide) and xanthan gum in a preset ratio.

[0032] The mixing module is used to mix dual-response signal capsules, germination capsules and reaction capsules with graded fine sand and short-cut basalt fibers to obtain capsule-aggregate mixture;

[0033] The repair module is used to lay the capsule-aggregate mixture on the slope surface, cover it with topsoil and plant vegetation, and trigger the slope time-series repair when the preset temperature and moisture content conditions are reached.

[0034] This application provides a slope biomineralization protection system and method based on dual-response signal capsules. The system involves preparing dual-response signal capsules, germination capsules, and reaction capsules. The wall material of the dual-response signal capsules is a mixture of poly(N-isopropylacrylamide) and xanthan gum in a preset ratio. Poly(N-isopropylacrylamide) serves as the temperature-sensitive core, exhibiting hydrophilicity below the critical dissolution temperature to ensure moisture response sensitivity; and hydrophobicity above the critical dissolution temperature to prevent false triggering by small amounts of moisture at high temperatures, while also delaying wall material aging. Xanthan gum serves as the water-sensitive component; its high hydrophilicity allows it to rapidly absorb moisture, swell, and rupture at suitable temperatures (below the critical dissolution temperature), ensuring timely release of nutrient signals. The signal capsules, germination capsules, and reaction capsules containing these two materials are mixed with aggregate to obtain a capsule-aggregate mixture. This mixture is then laid on the slope surface, covered with topsoil, and planted with vegetation. When the preset temperature and moisture content conditions are met, the slope undergoes sequential repair, thus simultaneously responding to temperature and moisture and precisely adapting to complex climatic environments. Attached Figure Description

[0035] Figure 1 This is a flowchart illustrating the first embodiment of the slope biomineralization protection method based on dual-response signal capsules of this application.

[0036] Figure 2 This is a schematic scanning electron microscope image of the wall material of the dual-response signal capsule involved in the slope biomineralization protection method based on dual-response signal capsules in this application;

[0037] Figure 3 This is a schematic diagram comparing the rupture time of a dual-response signal capsule and a traditional signal capsule at different temperatures in the embodiments of this application;

[0038] Figure 4 This is a schematic diagram of the layered structure of the slope protection system involved in this application;

[0039] Figure 5 This is a schematic diagram comparing the fluorescence tracer function of the dual-response signal capsule under high-temperature conditions and a traditional signal capsule involved in this application. Detailed Implementation

[0040] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0041] This application provides a slope biomineralization protection method based on dual-response signal capsules. In the first embodiment of this slope biomineralization protection method based on dual-response signal capsules, referring to... Figure 1 The method includes the following steps:

[0042] Step S10: Prepare dual-response signal capsules, germination capsules and reaction capsules respectively. The wall material of the dual-response signal capsule is obtained by mixing poly(N-isopropylacrylamide) and xanthan gum in a preset ratio.

[0043] It should be noted that the main implementation subject of this method is a slope biomineralization protection system based on dual-response signal capsules. The scanning electron microscope image of the wall material of the dual-response signal capsules is shown below. Figure 2 As shown, the porous structure and component dispersion state of the composite wall material are displayed. The dual-response signal capsule, germination capsule and reaction capsule are all composed of core material and wall material. The preset ratio can be 1:1. The wall material of the dual-response signal capsule is obtained by mixing poly(N-isopropylacrylamide) and xanthan gum in a preset ratio.

[0044] Specifically, the dual-response signal capsule can be a temperature-sensitive and water-sensitive dual-response signal capsule, and its wall material and core material composition are as follows:

[0045] Wall material: Poly(N-isopropylacrylamide) (PNIPAM)-low-concentration xanthan gum composite wall material, with a mass ratio of 1:1 between the two components and a xanthan gum mass fraction controlled at 2%-4%; prepared by solution blending, PNIPAM powder and xanthan gum powder are dissolved in deionized water and stirred until completely dissolved (temperature controlled at 25℃, stirring rate 300r / min, time 2h) to form a uniform composite wall material solution, which is used for encapsulation during capsule preparation;

[0046] Core material: Easily soluble nutrients (urea) + trace fluorescent tracer (sodium fluorescein, 0.1% by mass); Urea, as a nutrient signal source for microbial germination, accounts for 99.9% of the core material by mass, ensuring that a high concentration of nutrients can be formed locally after release; The fluorescent tracer can be used to monitor the wall material cracking and nutrient release progress in real time through a fluorescence detector, which is convenient for subsequent repair effect tracking.

[0047] It should be understood that the average particle size of the dual-response signal capsule is 100-150 μm, the average particle size of the germination capsule is 150-200 μm, and the average particle size of the reaction capsule is 200-250 μm.

[0048] It is important to understand that the core material of the reaction capsule contains calcium chloride and a pH buffer. The calcium chloride accounts for 95% of the mass, and the pH buffer is a mixture of potassium dihydrogen phosphate and dipotassium hydrogen phosphate, accounting for 5% of the mass.

[0049] It is important to understand that the reaction capsule is designed to accommodate mineralization processes triggered by dual response signals. The composition of the reaction capsule's wall and core materials is as follows:

[0050] Wall material: Sodium alginate-chitosan composite coagulation layer (crosslinking degree 65%-75%). The wall material has the highest hydrophobicity and mechanical strength, and the lowest rupture sensitivity. The delayed germination capsule ruptures in 5-8 hours, ensuring that the spores germinate and produce a large amount of enzymes before releasing the calcium source.

[0051] Core material: calcium chloride (calcium source, 95% by mass) + pH buffer (potassium dihydrogen phosphate-dipotassium hydrogen phosphate mixture, 5% by mass); the pH buffer can maintain the soil pH at 7.0-7.5, providing a suitable environment for microbial enzyme production (urease) and ensuring the efficiency of subsequent calcium carbonate precipitation.

[0052] The preparation steps of the dual-response signal capsule include:

[0053] Poly-N-isopropylacrylamide and xanthan gum are mixed in a preset ratio to obtain a composite wall material;

[0054] The step of mixing poly(N-isopropylacrylamide) and xanthan gum in a predetermined ratio to obtain a composite wall material includes:

[0055] Poly(N-isopropylacrylamide) powder and xanthan gum powder are mixed at a mass ratio of 1:1 to obtain a composite wall material, wherein the mass fraction of xanthan gum is 2%-4%.

[0056] The composite wall material is added to deionized water to prepare a 10% (w / w) composite wall material solution.

[0057] It should be noted that the preparation process of the dual-response wall material can be as follows: weigh PNIPAM powder and xanthan gum powder (xanthan gum mass fraction 2%-4%) at a mass ratio of 1:1, add deionized water to prepare a composite wall material solution with a mass fraction of 10%, stir at 25°C for 2 hours until completely dissolved, and obtain the composite wall material solution for use.

[0058] A dual-response signal capsule was obtained by dripping the core material solution into the composite wall material solution and then solidifying it. The core material solution was made of easily soluble nutrients and trace amounts of fluorescent tracers.

[0059] It should be noted that the signal capsule preparation process can be as follows: using the drop method, the core material (urea + sodium fluorescein) solution is dropped into the composite wall material solution, cured at 3°C ​​for 1 hour to form microcapsules with an average particle size of 100-150 μm, and then vacuum dried (temperature 20°C, vacuum degree 0.1 Pa) to obtain the ready-to-use dual-response signal capsule.

[0060] The preparation steps of the germination capsule include:

[0061] Gelatin and xanthan gum were mixed at a mass ratio of 2:1 to obtain the germination capsule wall material;

[0062] Pasteurella spores and bentonite were mixed at a mass ratio of 1:4 to obtain the core material of the germination capsule.

[0063] The germination capsule wall material and the germination capsule core material are mixed using a drip-curing method to obtain the germination capsule.

[0064] It should be noted that the preparation process of germination capsules and reaction capsules can be as follows: both can be prepared using existing drop-solidification processes to prepare germination capsules (average particle size 150-200μm) and reaction capsules (average particle size 200-250μm) respectively, ensuring that the particle sizes of the three types of capsules are compatible and that there is no stratification during mixing; the preparation process of reaction capsules has been described above, and the preparation steps are as above. Here, the composition of germination capsules will be specifically explained:

[0065] Wall material: Gelatin-xanthan gum complex (mass ratio 2:1). The wall material has a lower rupture sensitivity than the dual-response signal capsule. It will only rupture after the signal capsule releases nutrients and the soil moisture content is maintained at ≥10%. The rupture time is 3-5 hours later than the signal capsule to ensure that the nutrient zone is formed before the spores are released.

[0066] Core material: Pasteurella multocida spores (activity ≥ 10) 9 CFU / g) + bentonite (nucleation site and spore carrier), the two components are in a mass ratio of 1:4; the bentonite can adsorb the urea released by the signal capsule, providing continuous nutrition for spore germination, while avoiding spore aggregation and ensuring uniform distribution after release.

[0067] Step S20: Mix the dual-response signal capsules, germination capsules, and reaction capsules with graded fine sand and short-cut basalt fibers to obtain a capsule-aggregate mixture;

[0068] Step S20 includes:

[0069] Mix dual-response signal capsules, germination capsules, and reaction capsules in a mass ratio of 1:2:3 to obtain a mixed capsule;

[0070] Mix the capsules with graded fine sand and short-cut basalt fibers to obtain a capsule-aggregate mixture.

[0071] It should be noted that the dual-response signal capsules, germination capsules, and reaction capsules are mixed in a mass ratio of 1:2:3 to ensure uniform distribution of the three types of capsules. The mixed capsules are then stirred evenly with graded fine sand (particle size 0.1-0.5mm) and short-cut basalt fibers (length 5-8mm, mass accounting for 0.3%-0.5% of the dry mass of the aggregate) to obtain the capsule-aggregate mixture. The total mass of the capsules is controlled to account for 2%-3% of the dry mass of the aggregate to avoid excessive capsules leading to a decrease in aggregate strength.

[0072] Step S30: Lay the capsule-aggregate mixture on the slope surface, cover it with topsoil and plant vegetation. When the preset temperature-moisture content conditions are met, trigger the slope sequential repair.

[0073] It should be noted that the process of laying the capsule-aggregate mixture and the foundation treatment process can be as follows:

[0074] Basic treatment: Clean up debris on the surface of the slope to be protected. For areas with a slope angle greater than 30°, first excavate steps 20cm wide and 15cm deep to enhance the bonding force between the mixed material layer and the slope soil.

[0075] Mixture laying: The capsule-aggregate mixture is evenly laid on the slope surface with a thickness of 10-15cm. It is then compacted with a light roller (compaction degree ≥90%) to ensure that the mixture layer is free of voids.

[0076] Ecological cover: Cover the mixed material layer with 5-8cm of planting soil and plant soil-stabilizing vegetation (such as bermudagrass and alfalfa). The roots of the vegetation can penetrate into the mixed material layer to form a biological reinforcement network.

[0077] Step S30 includes:

[0078] Lay the capsule-aggregate mixture on the slope surface, cover it with topsoil and plant vegetation;

[0079] Slope sequential repair is triggered when the soil temperature on the slope is ≤32℃ and the soil moisture content is ≥12%.

[0080] It should be noted that the preset temperature-moisture content conditions can be that the soil temperature of the slope is ≤32℃ and the soil moisture content is ≥12%. When the ambient temperature is ≤32℃ and rainwater infiltration causes the soil moisture content to be ≥12%, the wall material of the dual-response signal capsule will rupture rapidly, releasing urea and fluorescent tracers. After 3-5 hours, the germination capsule will rupture under the stimulation of the nutrient zone, releasing spores and germinating. After another 5-8 hours, the reaction capsule will rupture and release calcium chloride. The spores will produce enzymes to hydrolyze urea to generate carbonate ions, which will combine with calcium ions to form calcium carbonate precipitate, sealing the microcracks in the slope. If the temperature is >32℃, even if a small amount of water infiltrates, the signal capsule will not be triggered, avoiding nutrient waste.

[0081] The thickness of the capsule-aggregate mixture is 10-15cm, the compaction degree is ≥90%, and the thickness of the planting soil cover is 5-8cm.

[0082] It should be noted that the rupture time comparison curves of the dual-response signal capsule and the traditional signal capsule at different temperatures are as follows: Figure 3 As shown, in Figure 3 In the diagram, the horizontal axis represents soil moisture content, and the vertical axis represents rupture time; a schematic diagram of the layered structure of the slope protection system is shown below. Figure 4 As shown, in Figure 4 In the middle, from bottom to top, are the slope soil, capsule-aggregate mixture layer, planting soil layer, and vegetation layer; in this embodiment, the fluorescence tracer comparison diagram of the dual-response signal capsule and the traditional signal capsule under high temperature environment (e.g., 40℃) is shown in the figure. Figure 5 As shown, in Figure 5 In the middle, the left image shows the dual-response capsule releasing no fluorescence, while the right image shows the conventional capsule releasing fluorescence due to accidental triggering.

[0083] The solution disclosed in this embodiment also has the following beneficial effects:

[0084] Precise response, adaptable to complex climates: Temperature-sensitive and water-sensitive dual-response wall materials trigger only under suitable environmental conditions (≤32℃, moisture content ≥12%) through a "temperature screening - moisture triggering" mechanism. The false triggering rate is reduced by more than 90% in high-temperature and arid areas, and the signal lag time is shortened by 80% in high-altitude and freeze-thaw areas, completely solving the response defects of traditional wall materials in extreme environments.

[0085] Improved mineralization efficiency and material utilization: Precise signal triggering ensures the synergistic timing of "signal-germination-response", microbial spores germinate under optimal nutritional and environmental conditions, and the calcium carbonate conversion rate is increased to over 90%. Compared with traditional signal capsules, the consumption of urea and calcium source is reduced by 30%, thus reducing repair costs.

[0086] Enhanced system stability and longevity: PNIPAM components can delay the high-temperature aging of wall materials, extending the storage period of signal capsules to 12 months (compared to only 6 months for traditional xanthan gum wall materials); at the same time, the dual-response mechanism avoids premature nutrient depletion, enabling the system to respond to effective rainfall multiple times, achieving continuous repair of newly formed cracks in the slope;

[0087] Excellent ecological synergy: The ammonium salts produced by microbial mineralization can provide nitrogen source for vegetation, and the composite wall materials (PNIPAM, xanthan gum) are environmentally friendly materials with no risk of soil pollution; the vegetation roots and mineralized layer form a synergistic reinforcement, and the slope protection effect continues to increase over time, making it suitable for slope protection in ecologically sensitive areas.

[0088] This application provides a slope biomineralization protection system and method based on dual-response signal capsules. The system involves preparing dual-response signal capsules, germination capsules, and reaction capsules. The wall material of the dual-response signal capsules is a mixture of poly(N-isopropylacrylamide) and xanthan gum in a preset ratio. Poly(N-isopropylacrylamide) serves as the temperature-sensitive core, exhibiting hydrophilicity below the critical dissolution temperature to ensure moisture response sensitivity; and hydrophobicity above the critical dissolution temperature to prevent false triggering by small amounts of moisture at high temperatures, while also delaying wall material aging. Xanthan gum serves as the water-sensitive component; its high hydrophilicity allows it to rapidly absorb moisture, swell, and rupture at suitable temperatures (below the critical dissolution temperature), ensuring timely release of nutrient signals. The signal capsules, germination capsules, and reaction capsules containing these two materials are mixed with aggregate to obtain a capsule-aggregate mixture. This mixture is then laid on the slope surface, covered with topsoil, and planted with vegetation. When the preset temperature and moisture content conditions are met, the slope undergoes sequential repair, thus simultaneously responding to temperature and moisture and precisely adapting to complex climatic environments.

[0089] The specific implementation method of the slope biomineralization protection device based on dual-response signal capsules in this application is basically the same as the embodiments of the slope biomineralization protection method based on dual-response signal capsules described above, and will not be repeated here.

[0090] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0091] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0092] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods of the various embodiments of this application.

[0093] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for slope biomineralization protection based on dual-response signal capsules, characterized in that, The method includes: Dual-response signal capsules, germination capsules, and reaction capsules were prepared respectively. The wall material of the dual-response signal capsule was obtained by mixing poly(N-isopropylacrylamide) and xanthan gum in a preset ratio. The dual-response signal capsule, germination capsule, and reaction capsule are mixed with graded fine sand and short-cut basalt fibers to obtain a capsule-aggregate mixture; The capsule-aggregate mixture is laid on the slope surface, covered with topsoil and planted with vegetation. When the preset temperature and moisture content conditions are reached, the slope sequential repair is triggered.

2. The slope biomineralization protection method based on dual-response signal capsules as described in claim 1, characterized in that, The preparation steps of the dual-response signal capsule include: Poly-N-isopropylacrylamide and xanthan gum are mixed in a preset ratio to obtain a composite wall material; The composite wall material is added to deionized water to prepare a 10% (w / w) composite wall material solution. A dual-response signal capsule is obtained by dripping a core material solution into the composite wall material solution and then solidifying it. The core material solution is made of readily soluble nutrients and trace amounts of fluorescent tracers.

3. The slope biomineralization protection method based on dual-response signal capsules as described in claim 2, characterized in that, The process of mixing poly(N-isopropylacrylamide) and xanthan gum in a preset ratio to obtain a composite wall material includes: Poly(N-isopropylacrylamide) powder and xanthan gum powder are mixed at a mass ratio of 1:1 to obtain a composite wall material, wherein the mass fraction of xanthan gum is 2%-4%.

4. The slope biomineralization protection method based on dual-response signal capsules as described in claim 1, characterized in that, The preparation steps of the germination capsule include: Gelatin and xanthan gum were mixed at a mass ratio of 2:1 to obtain the germination capsule wall material; Pasteurella spores and bentonite were mixed at a mass ratio of 1:4 to obtain the core material of the germination capsule. The germination capsule wall material and the germination capsule core material are mixed using a drip-curing method to obtain a germination capsule.

5. The slope biomineralization protection method based on dual-response signal capsules as described in claim 1, characterized in that, The process of mixing the dual-response signal capsules, germination capsules, and reaction capsules with graded fine sand and short-cut basalt fibers yields a capsule-aggregate mixture, comprising: The dual-response signal capsule, germination capsule, and reaction capsule are mixed in a mass ratio of 1:2:3 to obtain a mixed capsule; The mixed capsules are mixed evenly with graded fine sand and short-cut basalt fibers to obtain a capsule-aggregate mixture.

6. The slope biomineralization protection method based on dual-response signal capsules as described in claim 1, characterized in that, The process of laying the capsule-aggregate mixture on the slope surface, covering it with topsoil and planting vegetation, and triggering slope time-series repair when preset temperature and moisture content conditions are met includes: The capsule-aggregate mixture is laid on the slope surface, covered with topsoil, and planted with vegetation. Slope sequential repair is triggered when the soil temperature on the slope is ≤32℃ and the soil moisture content is ≥12%.

7. The slope biomineralization protection method based on dual-response signal capsules as described in claim 6, characterized in that, The thickness of the capsule-aggregate mixture is 10-15cm, the compaction degree is ≥90%, and the thickness of the planting soil covering is 5-8cm.

8. The slope biomineralization protection method based on dual-response signal capsules as described in claim 1, characterized in that, The average particle size of the dual-response signal capsule is 100-150 μm, the average particle size of the germination capsule is 150-200 μm, and the average particle size of the reaction capsule is 200-250 μm.

9. The slope biomineralization protection method based on dual-response signal capsules as described in claim 1, characterized in that, The core material of the reaction capsule contains calcium chloride and a pH buffer, wherein the calcium chloride accounts for 95% by mass and the pH buffer is a mixture of potassium dihydrogen phosphate and dipotassium hydrogen phosphate, accounting for 5% by mass.

10. A slope biomineralization protection system based on dual-response signal capsules, characterized in that, The system includes: The preparation module is used to prepare dual-response signal capsules, germination capsules and reaction capsules respectively. The wall material of the dual-response signal capsule is obtained by mixing poly(N-isopropylacrylamide) and xanthan gum in a preset ratio. The mixing module is used to mix the dual-response signal capsules, germination capsules and reaction capsules with graded fine sand and short-cut basalt fibers to obtain capsule-aggregate mixture; The repair module is used to lay the capsule-aggregate mixture on the slope surface, cover it with topsoil and plant vegetation, and trigger the slope time-series repair when the preset temperature-moisture content conditions are reached.

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