Slope ecological solidification device and method

Abstract

The invention discloses a slope ecological solidification device and method, and the device comprises a first water storage tank for preparing and storing a cementing liquid, a cementing liquid drip irrigation system communicated with the first water storage tank, a third water storage tank for preparing and storing a bacterial liquid, and a bacterial liquid drip irrigation system communicated with the third water storage tank. The cementing liquid drip irrigation system and the bacterial liquid drip irrigation system are arranged on the side slope and used for spraying the side slope, and the first water storage tank and the third water storage tank are communicated with the cementing liquid drip irrigation system and the bacterial liquid drip irrigation system respectively, so that the microorganism induced calcium carbonate precipitation technology is combined with the drip irrigation system; efficient stabilization of the loess slope is achieved, and the living environment of microorganisms can be optimized by accurately controlling drop irrigation water feeding, so that the generation efficiency of calcium carbonate is improved, the structural strength and erosion resistance of loess are remarkably enhanced, and the landslide risk caused by rainfall is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological slope treatment, and particularly relates to a slope ecological solidification device and method. Background Art

[0002] In recent years, with the rapid development of infrastructure such as highways and railways, the problem of the safety and stability of loess slopes inevitably arises in engineering construction. Loess slopes have significant structural strength under natural conditions, but after being soaked by water, the structural strength will rapidly decay, thus inducing landslide disasters. Especially in the Loess Plateau region, considering the climate characteristics of this region and the significant water sensitivity characteristics of loess, it is particularly important to achieve the effective allocation of water resources on loess slopes and the treatment of slope stability. Rainfall infiltration is considered to be a major factor inducing loess landslides. Although traditional slope treatment methods, such as the combination of engineering slope fixation and ecological slope fixation, have shown good comprehensive treatment effects, the problem of slope stability caused by rainfall has not been fundamentally solved. Microbial-induced carbonate precipitation (MICP) technology shows its unique advantages in ecological slope treatment. MICP not only provides an ecological restoration solution that is coordinated with the natural environment, but also has a higher cost-benefit ratio than traditional methods, and can enhance the mechanical properties of the soil without damaging the soil structure. This technology uses bacteria in the soil to catalyze the formation of calcium carbonate crystals in the soil pores. These crystals, as natural "glues", enhance the cohesion between soil particles, significantly improving the anti-erosion ability and overall stability of the slope;

[0003] Although the prior art discloses the treatment of sandy slopes with a microbial mineralization glue treatment solution, its specific spraying method is not disclosed, which will inevitably increase the complexity of slope treatment and cannot accurately control the dosage of sprayed water, which will inevitably reduce the living environment of microorganisms and increase the landslide risk caused by rainfall.

[0004] Therefore, it is necessary to develop and design a slope ecological solidification device and method, combine the MICP technology with a drip irrigation system, optimize the living environment of microorganisms on the basis of ensuring simple slope treatment, thereby improving the generation efficiency of calcium carbonate, significantly enhancing the structural strength and anti-erosion ability of loess, and effectively reducing the landslide risk caused by rainfall. This is an urgent technical problem that needs to be solved by those skilled in the art at present. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a slope ecological solidification device and method, which combines the biocementation technology with the drip irrigation system. On the basis of ensuring the simplicity of slope management, it optimizes the living environment of microorganisms, thereby improving the production efficiency of calcium carbonate, significantly enhancing the structural strength and anti-erosion ability of loess, and effectively reducing the risk of landslides caused by rainfall.

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

[0007] A slope ecological solidification device comprises a first water storage tank for preparing and storing a binder, a binder drip irrigation system connected to the first water storage tank, a third water storage tank for preparing and storing a bacterial liquid, and a bacterial liquid drip irrigation system connected to the third water storage tank. The binder drip irrigation system and the bacterial liquid drip irrigation system are arranged on the slope for spraying the slope.

[0008] Preferably, the third water tank is connected to the drainage ditch at the bottom of the slope through a rainwater collection conduit, and the third water tank is connected to the first water tank through a water tank conduit. A water tank conduit valve for opening and closing the water tank conduit is provided on the water tank conduit.

[0009] Preferably, a second filtered water pump, a third filtered water pump, a fourth filtered water pump and a fifth filtered water pump are sequentially arranged on the rainwater collection conduit.

[0010] Preferably, it further comprises a second water storage tank, wherein the second water storage tank is connected to the third water storage tank via a first filtered water pump.

[0011] Preferably, the third water storage tank is provided with a first paddle agitator for stirring the liquid inside the third water storage tank, a UV lamp for disinfecting and sterilizing rainwater, and a heater for heating the liquid in the third water storage tank. A sterile exhaust hole is also provided on the top of the third water storage tank, and an integrated control system for controlling the UV lamp, the first paddle agitator and the heater is provided on the side wall of the third water storage tank.

[0012] Preferably, a second paddle stirrer is provided in the first water storage tank for stirring the liquid in the first water storage tank.

[0013] Preferably, the cementing liquid drip irrigation system and the bacterial liquid drip irrigation system are arranged in a serpentine shape and staggered, and the cementing liquid drip irrigation system and the bacterial liquid drip irrigation system are evenly arranged on the slope surface. The cementing liquid drip irrigation system is evenly arranged with two or more cementing liquid low-pressure rotary nozzles, and the bacterial liquid drip irrigation system is evenly arranged with two or more bacterial liquid low-pressure rotary nozzles.

[0014] The present invention also discloses a slope ecological solidification method, which applies the above-mentioned slope ecological solidification device and includes the following steps:

[0015] S1: Through the analysis of the indoor test results, a reasonable MICP ratio design is obtained, and solid granular material packages of cementitious materials and culture medium materials are prepared;

[0016] S2: During rainfall, collect the rainwater in the drainage ditch and store it in the first water storage tank and the third water storage tank after filtration;

[0017] S3: Before the bacterial liquid expansion culture, turn on the UV lamp to treat the bacteria and viruses in the rainwater;

[0018] S4: During the bacterial liquid expansion culture, prepare the cementitious liquid and the bacterial liquid in the first water storage tank and the third water storage tank respectively;

[0019] S5: After the preparation of the bacterial liquid and the cementitious liquid, spray them onto the slope surface through the cementitious liquid drip irrigation system and the bacterial liquid drip irrigation system respectively.

[0020] Preferably, in S4, after adding cementitious materials, culture medium materials, and activated Bacillus pasteurii strains into the first water storage tank and the third water storage tank respectively, stir the liquids in the first water storage tank and the third water storage tank; during the expansion culture process, heat the liquid in the third water storage tank.

[0021] Preferably, after collecting the rainwater in the drainage ditch and storing it in the first water storage tank and the third water storage tank after filtration, and treating the bacteria and viruses in the rainwater, transfer the rainwater in the third water storage tank to the second water storage tank until the water level in the third water storage tank drops to 1 / 4 to 1 / 2;

[0022] After the preparation of the bacterial liquid and the cementitious liquid, transfer the rainwater in the second water storage tank to the third water storage tank.

[0023] The present invention has achieved the following technical effects compared with the prior art:

[0024] By connecting the first water storage tank and the third water storage tank with the cementitious liquid drip irrigation system and the bacterial liquid drip irrigation system respectively, the combination of the microbial-induced calcium carbonate precipitation (MICP) technology and the drip irrigation system is realized, achieving the high-efficiency stabilization of the loess slope. The water input of the drip irrigation can be precisely controlled to optimize the living environment of the microorganisms, thereby improving the generation efficiency of calcium carbonate, significantly enhancing the structural strength and erosion resistance of the loess, and effectively reducing the landslide risk caused by rainfall. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Attached Figure 1 is a schematic diagram of the overall structure of the slope ecological solidification device disclosed by the present invention;

[0027] Attached Figure 2 is a schematic diagram of the layout of the drip irrigation device of the slope ecological solidification device disclosed by the present invention;

[0028] Attached Figure 3 is a schematic diagram of the structure of the water storage tank of the slope ecological solidification device disclosed by the present invention;

[0029] Attached Figure 4 is a schematic diagram of the structure of the filtration water pump of the slope ecological solidification device disclosed by the present invention;

[0030] Attached Figure 5 is a general flow chart of the soil solidification of the loess slope of the slope ecological solidification device disclosed by the present invention;

[0031] Among them, 1. Cementitious liquid drip irrigation system; 2. Bacterial liquid low-pressure rotary nozzle; 3. Cementitious liquid low-pressure rotary nozzle; 4. First electromagnetic servo valve; 5. First water storage tank; 6. Water storage tank conduit; 7. Solar panel; 8. Second water storage tank; 9. Third water storage tank; 10. First filtration water pump; 11. Rainwater collection conduit; 12. Second filtration water pump; 13. Second electromagnetic servo valve; 14. Third filtration water pump; 15. Fourth filtration water pump; 16. Fifth filtration water pump; 17. Bacterial liquid drip irrigation system; 18. Integrated control system; 19. UV lamp; 20. First paddle stirrer; 21. Heater; 22. Sterile exhaust hole; 23. Second paddle stirrer; 24. Filter layer; 25. Bottom valve and check valve; 26. Centrifugal pump; 27. Water storage tank conduit valve. Detailed implementation manners

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] The object of the present invention is to provide a slope ecological solidification device and method, which combines the biocementation technology with the drip irrigation system. On the basis of ensuring simple slope treatment, the living environment of microorganisms is optimized, so as to improve the generation efficiency of calcium carbonate, significantly enhance the structural strength and erosion resistance of loess, and effectively reduce the landslide risk caused by rainfall.

[0034] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figure 1 , the slope ecological solidification device disclosed in the embodiment of the present invention at least includes a first water storage tank 5 for preparing and storing cementing liquid, a cementing liquid drip irrigation system 1 communicated with the first water storage tank 5, a third water storage tank 9 for preparing and storing bacterial liquid, and a bacterial liquid drip irrigation system 17 communicated with the third water storage tank 9. The cementing liquid drip irrigation system 1 and the bacterial liquid drip irrigation system 17 are arranged on the slope for spraying the slope. By connecting the first water storage tank 5 and the third water storage tank 9 with the cementing liquid drip irrigation system 1 and the bacterial liquid drip irrigation system 17 respectively, the microbial-induced calcium carbonate precipitation (MICP) technology and the drip irrigation system are combined, realizing the efficient stabilization of the loess slope. The living environment of microorganisms can be optimized by precisely controlling the water delivery of drip irrigation, so as to improve the generation efficiency of calcium carbonate, significantly enhance the structural strength and erosion resistance of loess, and effectively reduce the landslide risk caused by rainfall;

[0036] It should be noted that a first electromagnetic servo valve 4 for controlling the flow rate and time of cementing liquid spraying is arranged between the first water storage tank 5 and the cementing liquid drip irrigation system 1, and a second electromagnetic servo valve 13 for controlling the flow rate and time of bacterial liquid spraying is arranged between the third water storage tank 9 and the bacterial liquid drip irrigation system 17.

[0037] Reference Figure 1 - Figure 2 , in an embodiment, the third water storage tank 9 is communicated with a drainage ditch located at the bottom of the slope through a rainwater collection conduit 11, and the third water storage tank 9 and the first water storage tank 5 are communicated through a water storage tank conduit 6. A water storage tank conduit valve 27 for realizing the on-off of the water storage tank conduit 6 is arranged on the water storage tank conduit 6. During heavy rainfall, the water in the drainage ditch is conveyed to the third water storage tank 9 and the first water storage tank 5 through the rainwater collection conduit 11, which can avoid waste of water resources. After the rainwater collection is completed, the water storage tank conduit valve 27 can prevent the liquid exchange between the first water storage tank 5 and the third water storage tank 9 during the bacterial liquid amplification culture process.

[0038] Reference Figure 1 and Figure 3, As a preferred method, a second filtration water pump 12, a third filtration water pump 14, a fourth filtration water pump 15, and a fifth filtration water pump 16 are successively arranged on the rainwater collection conduit 11. The collection and filtration of rainwater can be achieved through the filtration water pumps. During heavy rainfall, rainwater can be collected through the rainwater collection conduit 11. At the same time, the filtration water pumps have an automatic backwashing function to prevent blockage during their service life (here, the filtration water pumps refer to the second filtration water pump 12, the third filtration water pump 14, the fourth filtration water pump 15, and the fifth filtration water pump 16).

[0039] It should be noted that the filtration water pumps are respectively composed of a filtration layer 24, a bottom valve and a check valve 25, and a centrifugal pump 26. The filtration layer 24 is filled with gravel materials. When rainwater passes through the filtration layer 24, large particulate matter will be filtered out to prevent it from entering the centrifugal pump 26 and damaging the impeller. The bottom valve and the check valve 25 can prevent the phenomenon of fluid backflow and pump body idling during rainwater collection.

[0040] Reference Figure 1 - Figure 2 , As an implementation method, it further includes a second water storage tank 8. The second water storage tank 8 is connected to the third water storage tank 9 through a first filtration water pump 10. By setting the second water storage tank 8, the filtered rainwater can be stored. When a certain concentration of bacterial liquid is equipped in the third water storage tank 9, the concentration of the bacterial liquid in the third water storage tank 9 can be reduced by transporting rainwater from the second water storage tank 8 to the third water storage tank 9, so that the concentration of the bacterial liquid equipped in the third water storage tank 9 can be adjusted.

[0041] It should be noted that the first water storage tank 5, the second water storage tank 8, and the third water storage tank 9 are all arranged at the top of the slope.

[0042] Reference Figure 1 , As a preferred method, a first paddle stirrer 20 for stirring the liquid inside the third water storage tank 9, a UV lamp 19 for disinfecting and sterilizing rainwater, and a heater 21 for heating the liquid in the third water storage tank 9 are arranged inside the third water storage tank 9. A sterile exhaust hole 22 is also arranged at the top of the third water storage tank 9. An integrated control system 18 for controlling the UV lamp 19, the first paddle stirrer 20, and the heater 21 is arranged on the side wall of the third water storage tank 9. By vertically installing the first paddle stirrer 20 at the center position of the top of the third water storage tank 9, good axial and radial flow can be provided for the bacterial liquid to ensure the efficiency of bacterial liquid preparation. By setting the UV lamp 19, the bacteria and viruses in the rainwater in the third water storage tank 9 can be destroyed. By setting the heater 21, the culture solution can be heated during the bacterial expansion process, and the temperature in the third water storage tank 9 can be accurately controlled and the water temperature can be monitored through the integrated control system 18.

[0043] It should be noted that multiple UV lamps 19 are provided, and the wavelength is usually 254 nanometers. Under the control of the integrated control system 18, the initial microorganisms in the rainwater can be effectively destroyed under the irradiation of the UV lamps 19.

[0044] Reference Figure 1 , as a preferred method, solar panels 7 are provided at the top of the slope to supply power to the entire device through a circuit.

[0045] Reference Figure 1 , as an implementation method, a second paddle agitator 23 for stirring the liquid in the first water storage tank 5 is provided in the first water storage tank 5. The second paddle agitator 23 is vertically installed at the center position of the top of the first water storage tank 5, which can provide good axial and radial flow for the cementitious liquid and ensure the efficiency of cementitious liquid preparation.

[0046] Reference Figure 1 , as an implementation method, the cementitious liquid drip irrigation system 1 and the bacterial liquid drip irrigation system 17 are arranged in a serpentine shape and are staggered. The cementitious liquid drip irrigation system 1 and the bacterial liquid drip irrigation system 17 are evenly arranged on the slope surface. Two or more cementitious liquid low-pressure rotary nozzles 3 are evenly arranged on the cementitious liquid drip irrigation system 1, and two or more bacterial liquid low-pressure rotary nozzles 2 are evenly arranged on the bacterial liquid drip irrigation system 17. By arranging the cementitious liquid drip irrigation system 1 and the bacterial liquid drip irrigation system 17 in a serpentine shape and staggering them, the bacterial liquid and the cementitious liquid can be sprayed onto the slope surface in sequence to ensure the solidification effect of the slope.

[0047] Reference Figure 1 - Figure 5 , the present invention also discloses a slope ecological solidification method, which uses the above-mentioned slope ecological solidification device and includes the following steps:

[0048] S1: Through the analysis of the indoor test results, a reasonable MICP ratio design is obtained, and solid granular material packages of cementitious materials and culture medium materials are prepared;

[0049] S2: During rainfall, rainwater in the drainage ditch is collected by a filtration water pump and stored in the first water storage tank 5 and the third water storage tank 9 after filtration;

[0050] S3: Before the bacterial liquid expansion culture, turn on the UV lamp 19 to treat bacteria and viruses in the rainwater;

[0051] S4: During the bacterial liquid expansion culture, after the operator adds cementitious materials to the first water storage tank 5 and adds culture medium materials and activated Bacillus pasteurii strains to the third water storage tank 9, the first paddle agitator 20 and the second paddle agitator 23 are respectively used to provide axial and radial flow forces for the materials to be suspended in the liquid. During the expansion culture process, the inserted heater 21 can provide a constant temperature condition for the growth of bacteria;

[0052] S5: After the bacterial liquid and the cementing liquid are prepared, they are respectively sprayed onto the slope surface through the cementing liquid drip irrigation system 1 and the bacterial liquid drip irrigation system 17.

[0053] Through the above steps, without destroying the original ecosystem, the soil stability is significantly improved by using biochemical reactions, while promoting vegetation restoration and the protection of biodiversity. This not only reduces the engineering cost, improves the treatment quality, but also enhances the ecological security and operational stability of slopes in the Loess Plateau and other similar regions, with great social, economic and environmental protection value.

[0054] It should be noted that the cementing liquid is prepared according to a certain concentration of urea and calcium chloride. The concentration of the cementing liquid is 1.0 mol / L to 2.0 mol / L. More specifically, the molar concentration of urea is 1.5 mol / L; the molar concentration of calcium chloride is 1.0 mol / L;

[0055] The culture medium material is prepared according to a certain concentration of peptone, soy peptone, sodium chloride, urea and NaOH. More specifically, the mass concentration of peptone is 15 g / L; the mass concentration of soy peptone is 5 g / L; the mass concentration of sodium chloride is 5 g / L; the mass concentration of urea is 20 g / L, and the mass concentration of NaOH is 0.4 g / L. The pH of the finally prepared culture solution is 7.3;

[0056] After the operator puts the culture solution material into the third water storage tank 9, the Bacillus pasteurii is inoculated into the culture solution at an inoculation amount of 1:100, and the integrated control system 18 is used to control the inserted heater 21, so as to provide a constant and suitable temperature (40 °C) for the growth of bacteria;

[0057] The top of the third water storage tank 9 is provided with a sterile exhaust hole 22, which provides a channel for gas exchange between the inside and outside of the third water storage tank 9 during the bacterial expansion process, and avoids the pollution of the culture solution by external bacteria during this process. During the bacterial liquid expansion process, the first paddle stirrer 20 keeps working for 36 h, and the rotation speed is 300 revolutions per minute. The OD value of the finally prepared bacterial liquid is 2.0 mol / L;

[0058] The working pressure of the cementing liquid low-pressure rotary nozzle 3 and the bacterial liquid low-pressure rotary nozzle 2 is 250 kPa, and the spraying flow rate is 1.5 m3 / h;

[0059] 1 h after the bacterial liquid low-pressure rotary nozzle 2 finishes working, the cementing liquid low-pressure rotary nozzle 3 works. The design of the independent drip irrigation system and the independent nozzle can avoid the calcium carbonate precipitation of the bacterial liquid and the cementing liquid in the pipeline, causing system corrosion.

[0060] The concentration of the bacterial solution prepared above is 2.0 mol / L, which is suitable for single-time and rapid construction of loess slopes after engineering slope cutting. The high spraying flow rate helps the soil on the slope surface to consolidate quickly. In addition, the high-concentration cementing solution and the bacterial solution with a high OD value can significantly improve the solidification effect of the soil. However, this will lead to too high content of compounds such as urea and calcium chloride in the slope surface soil, which is not conducive to plant growth.

[0061] Reference Figure 1 - Figure 5 , as an implementation method, when it is necessary to adjust the concentration of the bacterial solution in the third water storage tank 9, the main steps are as follows:

[0062] S1: Through the analysis of indoor test results, obtain a reasonable MICP ratio design, and prepare solid particle material packages of cementing materials and culture medium materials;

[0063] S2: During rainfall, collect rainwater in the drainage ditch through a filtration water pump and store it in the first water storage tank 5 and the third water storage tank 9 after filtration;

[0064] S3: Before the bacterial solution is expanded, turn on the UV lamp 19 to treat bacteria and viruses in the rainwater;

[0065] S4: Transfer the rainwater in the third water storage tank 9 to the second water storage tank 8 until the water level in the third water storage tank 9 drops to 1 / 4;

[0066] S5: When the bacterial solution is expanded, after the operator adds cementing materials to the first water storage tank 5 and adds culture medium materials and activated Bacillus pasteurii strains to the third water storage tank 9, respectively use the first paddle stirrer 20 and the second paddle stirrer 23 to provide axial and radial flow forces for the materials to be suspended in the liquid. During the expansion process, the inserted heater 21 can provide a constant temperature condition for the growth of bacteria;

[0067] S6: Transfer the rainwater in the second water storage tank 8 to the third water storage tank;

[0068] S7: After the bacterial solution and the cementing solution are prepared, spray them onto the slope surface through the cementing solution drip irrigation system 1 and the bacterial solution drip irrigation system 17 respectively.

[0069] The cementing solution is prepared according to a certain concentration of urea and calcium chloride. More specifically, the molar concentration of urea is 0.15 mol / L, and the molar concentration of calcium chloride is 0.1 mol / L;

[0070] After the third water storage tank 99 prepares a Bacillus pasteurii bacterial solution with an OD value of 2.0 mol / L, transfer the rainwater in the second water storage tank 8 back to the third water storage tank 9 through the backwashing function of the first filtration water pump 10;

[0071] The first paddle stirrer 20 kept working for 0.5 h at a rotational speed of 300 revolutions per minute, and the OD value of the finally prepared bacterial solution was 0.75 mol / L.

[0072] Preferably, the working pressure of the cementitious liquid low-pressure rotary nozzle 3 and the bacterial solution low-pressure rotary nozzle 2 is 180 kPa, and the spraying flow rate is 0.75 m 3 / h.

[0073] The cementitious liquid low-pressure rotary nozzle 3 works 2 h after the bacterial solution low-pressure rotary nozzle 2 finishes working.

[0074] The OD value of the bacterial solution is 0.75 mol / L, which is suitable for multiple and long-term solidification of the loess slope after highway operation. The low spraying flow rate helps the slope soil to be fully wetted and improves the soil solidification effect. The low-concentration cementitious liquid and the bacterial solution with a low OD value are beneficial to improving the efficiency of the MICP process and play a promoting role in the growth of plants.

[0075] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the invention. Any reference signs in the claims should not be regarded as limiting the claimed invention.

Claims

1. An ecological solidification device for slopes, characterized in that, It includes a first water storage tank for preparing and storing a binder liquid, a binder liquid drip irrigation system connected to the first water storage tank, a third water storage tank for preparing and storing a bacterial liquid, and a bacterial liquid drip irrigation system connected to the third water storage tank. The binder liquid drip irrigation system and the bacterial liquid drip irrigation system are arranged on a slope for spraying the slope.

2. The slope ecological solidification device according to claim 1, characterized in that, The third water tank is connected to the drainage ditch at the bottom of the slope through a rainwater collection conduit, and the third water tank is connected to the first water tank through a water tank conduit. A water tank conduit valve for opening and closing the water tank conduit is provided on the water tank conduit.

3. The slope ecological solidification device according to claim 2, characterized in that, The rainwater collection conduit is provided with a second filter water pump, a third filter water pump, a fourth filter water pump and a fifth filter water pump in sequence.

4. The slope ecological solidification device according to claim 1, characterized in that It also includes a second water storage tank, which is connected to the third water storage tank through a first filtered water pump.

5. The slope ecological solidification device according to claim 1, characterized in that The third water storage tank is provided inside with a first paddle stirrer for stirring the liquid inside the third water storage tank, a UV lamp for disinfecting and sterilizing rainwater, and a heater for heating the liquid in the third water storage tank. A sterile exhaust hole is also provided on the top of the third water storage tank, and an integrated control system for controlling the UV lamp, the first paddle stirrer and the heater is provided on the side wall of the third water storage tank.

6. The slope ecological solidification device according to claim 1, characterized in that The first water storage tank is provided with a second paddle stirrer for stirring the liquid in the first water storage tank.

7. The slope ecological solidification device according to claim 1, characterized in that, The cementing liquid drip irrigation system and the bacterial liquid drip irrigation system are arranged in a serpentine shape and staggered. The cementing liquid drip irrigation system and the bacterial liquid drip irrigation system are evenly arranged on the slope surface. Two or more cementing liquid low-pressure rotating nozzles are evenly arranged on the cementing liquid drip irrigation system, and two or more bacterial liquid low-pressure rotating nozzles are evenly arranged on the bacterial liquid drip irrigation system.

8. A slope ecological solidification method, which applies the slope ecological solidification device described in any one of claims 1-7, is characterized in that, The steps include: S1: Through the analysis of indoor test results, a reasonable MICP ratio design is obtained, and solid particle material packages of cementing materials and culture medium materials are prepared; S2: During rainfall, rainwater from the drainage ditch is collected and stored in the first and third water storage tanks after filtration; S3: Before the bacterial solution is expanded, turn on the UV light to treat the bacteria and viruses in the rainwater; S4: When the bacterial liquid is expanded, the cementing liquid and the bacterial liquid are prepared in the first water storage tank and the third water storage tank respectively; S5: After the bacterial liquid and the cementing liquid are prepared, they are sprayed onto the slope surface through the cementing liquid drip irrigation system and the bacterial liquid drip irrigation system respectively.

9. The slope ecological solidification method according to claim 8, characterized in that, In S4, after adding the binder material, culture medium material and activated Bacillus pasteurianus strains into the first water tank and the third water tank respectively, the liquids in the first water tank and the third water tank are stirred; during the expansion process, the liquid in the third water tank is heated.

10. The slope ecological solidification method according to claim 8, characterized in that, Collect rainwater from the drainage ditch and store it in the first water storage tank and the third water storage tank after filtering. After treating bacteria and viruses in the rainwater, transfer the rainwater in the third water storage tank to the second water storage tank until the water level in the third water storage tank drops to 1 / 4 to 1 / 2; After the bacterial liquid and the cementing liquid are prepared, the rainwater in the second water storage tank is transferred to the third water storage tank.

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