Ecological seed-carrying slurry for slope of mine dump, preparation method and application thereof

Abstract

The present invention relates to the technical field of ecological concrete slurry, and specifically to an ecological seed-carrying slurry for the slope of a mine dump, a preparation method and its application. Aiming at the special environmental characteristics of the Inner Mongolia mining area, the present invention prepares a new type of artificial aggregate containing growth domains and seeds, which is composed of a three-layer structure, each layer having a specific function, so as to achieve the purpose of promoting the germination of multi-source species, plant growth, providing nutrition and improving the soil environment. The slurry can not only effectively utilize solid waste and reduce costs, but also adopts in-situ point-type layered hole sowing to shorten the vegetation restoration cycle in the ecological restoration of the slope, greatly improve the survival rate of tree and shrub seed sources, reduce the number of watering times, save restoration costs, and reduce the workload of management. While effectively promoting vegetation restoration, it strengthens the stability of the slope, prevents soil and water loss, slows down runoff and consolidates the soil, providing an efficient and sustainable solution for the ecological restoration of green mines in Inner Mongolia.

Description

Technical Field

[0001] The invention relates to the technical field of ecological concrete slurry, and in particular to an ecological seed-carrying slurry for a slope of a mine dump, a preparation method and application thereof. Background Art

[0002] Inner Mongolia is rich in mineral resources. Mining occupies an important position in the national economy and has made important contributions to the economic and social development of the autonomous region. However, the long-term development and utilization of mineral resources has led to increasingly prominent ecological and environmental problems. The cumulative land area occupied and damaged by production mines is huge, and the amount of solid waste is large, which seriously affects the mines, the ecological environment of human settlements and the sustainable development of the mining industry.

[0003] The mine dump is a place where mining waste is concentrated and piled up during mining, usually called a waste rock dump or slag dump. As a key component of open-pit mining, the mine dump is mainly used to receive and store stripped rock and soil waste, usually with a large amount of accumulation. At present, the methods commonly used for slope repair in mine dumps include artificial grass slope protection, geocell grass slope protection, honeycomb grid grass slope protection, etc. The artificial grass slope protection method achieves slope protection by simply sowing grass seeds, and is usually suitable for areas with gentle slopes and low slope heights. However, although this method is simple to construct and low in cost, there is often unevenness in the grass seed sowing process, and the grass seeds are easily washed away by rainwater, resulting in a low survival rate, which limits the repair effect to a certain extent. Geocell grass slope protection is a slope protection method that combines geocells with grass planting technology. Geocells are grid structures made of high-strength polymers or other materials, which can effectively reinforce the soil and prevent slope landslides, collapses and soil erosion. By planting grass plants in the cell, not only can the stability of the soil be enhanced, but also the anti-erosion ability and ecological restoration ability of the slope can be improved. Although geocells can effectively fix the soil, it is often difficult to achieve the expected slope protection effect due to the poor adaptability of grass species. The honeycomb grid grass slope protection method protects the slope and reduces soil erosion by combining plant roots with a honeycomb grid structure. Since the soil in the spoil dump is usually poor and the slope is steep, it is not easy for the grass roots to take root and fix, resulting in a low initial survival rate. In addition, this method is difficult to construct and has high costs. In areas with severe wind and sand or poor soil conditions, the effect is often difficult to achieve as expected.

[0004] Therefore, it is an urgent problem to seek a new method for repairing the slope of the mine spoil dump to solve the above defects. Summary of the invention

[0005] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a mining area dump slope ecological seed-carrying slurry, a preparation method and its application. Aiming at the special environmental characteristics of the Inner Mongolia mining area, the present invention prepares a new type of artificial aggregate containing growth domains and seeds. The aggregate is composed of a three-layer structure, and each layer has a specific function to promote the germination of multi-source species, plant growth, provide nutrition and improve the soil environment. On this basis, the present invention further prepares a mining area dump slope ecological seed-carrying slurry. The slurry can not only effectively utilize solid waste, reduce costs, and adopt in-situ point-type layered hole sowing, but also shorten the vegetation restoration cycle in the slope ecological restoration, greatly improve the survival rate of tree and shrub seed sources, reduce the number of watering, save restoration costs, and reduce the workload of management. It can also effectively promote vegetation restoration, enhance slope stability, prevent and control soil erosion, slow down runoff and consolidate soil, providing an efficient and sustainable solution for the ecological restoration of green mines in Inner Mongolia.

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

[0007] An ecological seed-carrying slurry for the slope of a mine dump includes the following components by weight: 1-3 parts of artificial aggregate containing growth domains, 1-3 parts of xanthan gum, 5-10 parts of cassava starch gum, 1-2 parts of urea, 3-5 parts of glycerol, 30-40 parts of in-situ clay, 2-5 parts of xylo-oligosaccharides, and 45-60 parts of water;

[0008] Among them, the particle size of the artificial aggregate containing growth domain and seeds is 60-90mm, and its raw materials include the following components in parts by mass: 2-3 parts of multi-source seeds, 22-30 parts of alfalfa fiber, 15-26 parts of corn starch, 2-5 parts of mineral potassium humate, 0.1-0.3 parts of benzyl aminopurine, 40-50 parts of manure soil, 7-12 parts of water-responsive oxygen-containing bubble gel, 4-6 parts of polyaluminium chloride waste residue, and 18-20 parts of water. The multi-source seeds include the following components in parts by mass: 20-23 parts of Ordos mountain apricot seeds, 25-30 parts of Jungar sea red seeds, and 47-55 parts of sand boxwood seeds; the particle size of the Ordos mountain apricot seeds is 15-20mm, the particle size of the Jungar sea red seeds is 7-12mm, and the particle size of the sand boxwood seeds is 7-10mm.

[0009] Preferably, the particle size of the xanthan gum is 5-10 μm; the particle size of the cassava starch gum is 10-15 μm; the particle size of the urea is 0.85-2 mm; the density of the glycerol is 1.2 g / cm 3 .

[0010] Preferably, the diameter of the alfalfa fiber is 0.2-0.4 mm and the length is 5-12 mm; the particle size of the corn starch is 200-300 mesh; the particle size of the mineral potassium humate is 100-150 mesh; the particle size of the benzylaminopurine is 300-400 mesh; and the particle size of the polyaluminium chloride waste residue is 300-400 mesh.

[0011] Preferably, the water-responsive oxygen-containing bubble gel comprises the following components by mass: 10-15 parts of gelatin, 0.3-0.5 parts of sodium dodecylbenzene sulfonate, 1-2 parts of glutaraldehyde, 0.5-2 parts of hydrogen peroxide, and 81-85 parts of deionized water; the gelatin is in one or more of granular, flaky, and powdery forms, and has a relative density of 1.3-1.4.

[0012] Preferably, the water-responsive oxygen-containing bubble gel is prepared by the following steps:

[0013] S11. 81-85 parts of deionized water are placed in a stainless steel container by mass, 10-15 parts of gelatin are added, the stainless steel container is placed on a heating plate and heated to 40°C-50°C, and the mixture is gently stirred with a stirring rod during the heating process for 5-10 minutes until the gelatin is completely dissolved and the heating is stopped;

[0014] S12. 0.3-0.5 parts by mass of sodium dodecylbenzene sulfonate was added to the solution obtained in step S11, and stirred with a stirring rod for 3-5min to help the solution generate tiny bubbles with sodium dodecylbenzene sulfonate;

[0015] S13. 1-2 parts of glutaraldehyde are added to the solution obtained in step S12 by mass, and the stainless steel container is placed on a heating plate and heated to 40°C-45°C. During the heating process, the mixture is stirred with a stirring rod for 1-2 minutes, and then the heating is stopped and 0.5-2 parts of hydrogen peroxide are added. The ultrasonic generator probe is immersed in the solution, and the ultrasonic power is set to 100 W-150 W and the ultrasonic frequency is set to 50-60 kHz. After the treatment time is 1-2 minutes, the solution is allowed to stand for 10-15 minutes to cool to room temperature;

[0016] S14. The solution obtained in step S13 is placed in a freeze dryer and precooled for 10-15 minutes at a precooling temperature of -15°C to 20°C;

[0017] S15. After freeze-drying the solid obtained in step S14 in a freeze dryer for 2-3 hours, the solid is taken out and broken into solid blocks with a side length of less than 1.5 cm to obtain a water-responsive oxygen-containing bubble gel.

[0018] Preferably, the growth domain-carrying artificial aggregate is prepared by the following steps:

[0019] S21. Multi-source pretreatment:

[0020] S211. Pretreatment of Ordos apricot seeds: Place the Ordos apricot seeds in an air pressure shelling machine for air pressure shelling treatment, the treatment pressure is 0.1-0.2 MPa, and the treatment time is 5-7 seconds; place the shelled seeds in an oxygen-rich environment with an oxygen concentration of 40%-60% for 1-3 hours for high-concentration oxygen treatment, and then expose the seeds to a normal oxygen environment for deoxygenation treatment for 10-15 minutes; soak the seeds in warm water at a temperature of 40℃-50℃ for 24 hours, and then take them out for use;

[0021] S212. Pretreatment of Jungar Sea Red Seeds: Soak the Jungar Sea Red Seeds in warm water at a temperature of 40 ℃ -50 ℃ for 16-24h and remove for later use;

[0022] S213. Pretreatment of Ammopiptanthus mongolicus seeds: Soak the Ammopiptanthus mongolicus seeds in warm water at a temperature of 40°C-50°C for 24 hours, remove the seeds and wipe off the surface moisture, soak them in an aqueous solution of 0.5-1% potassium permanganate for disinfection for 30-35 minutes, remove the seeds, and dry them for later use;

[0023] S22. 15-26 parts by mass of corn starch, 18-20 parts by mass of 40% of water were placed in a blender and stirred for 30-60s at a blender speed of 100-120 rpm, 22-30 parts of alfalfa fiber were added and stirred for 30-60s at a blender speed of 60-100 rpm;

[0024] S23. Dissolve 0.1-0.3 parts of benzylaminopurine in 75%-99% ethanol by mass and place it in the mixture obtained in step S22, the ratio of benzylaminopurine to ethanol is 10 mg / ml; then place 2-5 parts of mineral potassium humate, 40-50 parts of manure soil and the remaining parts of water by mass into a blender and continue stirring for 60-120s at a blender speed of 60-80 rpm; then place 7-12 parts of water-responsive oxygen-containing bubble gel into a blender and continue stirring for 10-20s at a blender speed of 40-60 rpm;

[0025] S24. After coating the mixture obtained in step S23 with 2-3 parts of multi-source seeds, the mixture is placed in a disc granulator for spheroidization, and the coating thickness is controlled to be 25-35 mm. The spheroidized aggregate is then placed in a rubber steel ball electromagnetic fracturing device for aggregate surface fracturing, and the fracturing value is set to 0.1-0.2 MPa, and the treatment time is 1-2 min;

[0026] S25. The spherical aggregate obtained in step S24 is placed in the disc granulator again, and the surface of the spherical aggregate is coated with a layer of polyaluminium chloride waste residue, and the coating thickness is controlled to be 1.5-2 mm. The coated spherical aggregate is placed in a cool and dry place, and dried at room temperature for 1-3 hours, and then placed in a rubber steel ball electromagnetic fracturing device again for aggregate surface fracturing treatment, and the fracturing value is set to 0.1-0.2Mpa, and the treatment time is 1-2min;

[0027] S26. The aggregate obtained in step S25 is placed in water at a temperature of 21° C. to 23° C. for water bath curing for 7 days to obtain the artificial aggregate containing growth domains and seeds.

[0028] A method for preparing an ecological seed-carrying slurry for a mine dump slope, which is used to prepare the ecological seed-carrying slurry for a mine dump slope, comprises the following steps:

[0029] S1. 80% of 45-60 parts of water by mass is added to a stirring device;

[0030] S2. 1-3 parts of xanthan gum and 5-10 parts of tapioca starch gum were placed in a blender and stirred for 10-15 min at a blender speed of 80-100 rpm to ensure complete dissolution and no lumps in the slurry;

[0031] S3. Place 1-2 parts of urea and 3-5 parts of glycerol in a mixer and stir for 6-10min at a mixer speed of 80-100 rpm to ensure uniform mixing;

[0032] S4. 1-3 parts by mass of artificial aggregate containing growth domains are slowly placed in a mixer and stirred for 1-2min at a mixer speed of 40-60 rpm;

[0033] S5. Place 30-40 parts by mass of in-situ clay, 2-5 parts by mass of xylo-oligosaccharides and the remaining parts by mass of water in a mixer and stir for 2-4 minutes at a mixer speed of 40-60 rpm to ensure uniform stirring to obtain the ecological seed-carrying slurry for the slope of the mine dump.

[0034] The invention discloses an application of the ecological seed-carrying slurry for the slope of a mine dump prepared according to the method for preparing the ecological seed-carrying slurry for the slope of a mine dump in a mine.

[0035] Preferably, the construction method of the application adopts the in-situ site-type layered hole sowing method, comprising the following steps:

[0036] S31. Dig a cylindrical point-type spraying hole with a depth of 50-60 cm and a diameter of 60-80 cm vertically;

[0037] S32. Carry out in-situ stratified seeding of ecological seed-carrying slurry on the slope of the mine dump:

[0038] S321. The first layer of spraying: using a standard spraying nozzle of the spraying machine, the nozzle diameter is 100-150mm, the spray outlet pressure is 0.2-0.4 MPa, spraying a layer of slurry without the artificial aggregate containing the growth field, the spraying thickness is 30-35cm, ensuring that the slurry is evenly covered on the soil surface to form a stable base, ensuring that the bottom soil is moist, which is convenient for plant growth;

[0039] S322. Second layer of spraying: After waiting for 15-20 minutes for the first layer of slurry to solidify slightly, the second layer of spraying is carried out, using a standard nozzle of the spraying machine with a nozzle diameter of 150-200mm and a spray outlet pressure of 0.1-0.2 MPa. Spray a layer of ecological seed-carrying slurry on the slope of the mine dump with a spraying thickness of 12-15cm to ensure that the seeds can take root and germinate in the bottom matrix;

[0040] S323. The third layer of spraying: After waiting for 10-15 minutes for the second layer of slurry to solidify slightly, the third layer of spraying is carried out, using a standard nozzle of the spraying machine, the nozzle diameter is 100-150mm, the spraying pressure is 0.1-0.2 MPa, and a layer of slurry without the artificial aggregate containing the growth domain is sprayed, and the spraying thickness is 8-10cm, which helps to keep moisture and promote better germination of seeds;

[0041] S33. After the spraying is completed, water and humidity management are carried out regularly to keep the soil appropriately moist. The first watering is carried out after 7 days and the second watering is carried out after 18 days.

[0042] The difference between the slurry not containing the artificial aggregate containing growth domain seeds and the ecological seed-carrying slurry for the slope of the mine spoil dump is only whether the slurry components contain the artificial aggregate containing growth domain seeds.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The artificial aggregate with growth domain and seeds consists of three layers, each of which has a specific function to promote seed germination, plant growth, provide nutrition and improve the soil environment. The multi-source seed layer ensures plant diversity and provides a combination of trees and shrubs that are adapted to the harsh growth environment of drought and high cold in Inner Mongolia. It uses its different germination characteristics to improve the growth rate and has strong growth potential to promote vegetation recovery. The growth domain layer serves as a nutrient protection layer, providing the seeds with the necessary nutrition and protective environment to support their germination and early growth, while maintaining moisture and air circulation. The outer coating formed by the solid shell of polyaluminium chloride waste slag provides an additional barrier for the internal growth domain and multi-source seeds to avoid the direct influence of the external soil environment, and has hygroscopic and slow-release effects to ensure that moisture is gradually released, thereby maintaining suitable humidity. The fracturing process of each layer further provides a channel for plant growth. This multi-layer coating system can not only improve the germination rate and survival rate of multi-source species, but also effectively promote the growth of plants on the slopes of the mine dump and improve the vegetation restoration effect;

[0045] 2. Alfalfa is a nutrient-rich plant fiber with excellent water absorption and air permeability. The interwoven structure it forms improves soil aeration and retains moisture, thus providing a good environment for seed germination and root growth. Corn starch, as a natural biodegradable material, helps keep the soil moist, improves soil adhesion, and enhances its structural stability. Mineral potassium humate can improve soil structure, enhance soil water holding capacity, permeability and nutrient supply capacity. Benzylaminopurine powder can accelerate seed germination and promote early plant growth. Manure soil, as a source of organic fertilizer, provides rich nutrients, supports plant growth, and improves soil fertility. Water-responsive oxygen-containing bubble gel can effectively absorb and release water, maintain appropriate humidity, support seed germination, and provide necessary oxygen to plant roots, promoting root respiration. Through the synergistic effect of different materials, the growth domain provides seeds with nutrition, water control, oxygen supply and other support;

[0046] 3. The ecological seed-carrying slurry for the slopes of mining dumps effectively solves the problems of high cost, limited construction conditions, poor adaptability of grass plants, difficulty in rooting and fixing, and low initial survival rate in the restoration of traditional dumps. This slurry can not only effectively utilize solid waste and reduce costs, but also shorten the vegetation restoration cycle, save expenses and reduce the workload of management. In addition, the ecological seed-carrying slurry can promote the rapid recovery of vegetation, enhance the stability of slopes, control soil erosion, slow down runoff and consolidate soil, thereby realizing the protection and beautification of the ecological environment, ensuring the safety of the human living environment, with good economic and social benefits, helping to improve ecological benefits and promote sustainable development;

[0047] 4. The construction method of ecological seed-carrying slurry on the slope of the mine dump adopts the in-situ point-type layered hole sowing method. This method provides a better soil cover and protective layer for multi-source seeds through precise spraying and layered application of ecological seed-carrying slurry, effectively reducing the direct impact of environmental changes on multi-source seeds. The in-situ layered hole sowing structure helps to maintain the appropriate humidity, temperature and air permeability of the soil, promote the rapid germination and growth of multi-source seeds, and effectively improve the initial survival rate. The layered design can also improve the air permeability and water retention of the soil in a short period of time, providing stable water support for plants. Compared with the traditional artificial planting method, the in-situ point-type layered hole sowing method can greatly improve the construction efficiency. In the environment with complex terrain conditions such as the slope of the mine dump, the in-situ point-type layered hole sowing method can accurately control the location and number of spraying points, avoiding problems such as large slope undulations and loose soil. It can not only improve the ecological landscape of the slope and improve soil quality, but also increase biodiversity, thereby achieving long-term ecological restoration effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the preparation process of the ecological seed-carrying slurry for the slope of the mine dump according to the present invention;

[0049] Figure 2 The present invention is a flow chart of the preparation process of the ecological seed-carrying slurry for the slope of the mine dump;

[0050] Figure 3 This is a process flow chart of the preparation of the water-responsive oxygen-containing bubble gel of the present invention;

[0051] Figure 4 The present invention is a flow chart of the preparation process of the artificial aggregate containing growth domain and seeds;

[0052] Figure 5 This is a diagram of the construction method of the ecological seed-carrying slurry on the slope of the mine spoil dump described in the present invention. DETAILED DESCRIPTION

[0053] The present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a 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.

[0054] See also Figure 1-5 , the present invention provides a technical solution:

[0055] Example 1

[0056] The raw materials of the ecological seed-carrying slurry for the slope of the mine dump are shown in Table 1 (wherein the weight of one unit mass portion is 1500g):

[0057] Table 1

[0058]

[0059] Specifically, the particle size of the artificial aggregate containing growth domain and carrying seeds is 65 mm, and its raw materials are shown in Table 2 (wherein the weight of one unit mass portion is 1500 g):

[0060] Table 2

[0061]

[0062] Furthermore, the above multi-source seeds include: Ordos apricot seeds with a particle size of 15-20 mm, Jungar sea red seeds with a particle size of 7-12 mm, and Ammopiptanthus mongolicus seeds with a particle size of 7-10 mm. They respectively include the following mass parts: 20 parts of Ordos apricot seeds, 25 parts of Jungar sea red seeds, and 47 parts of Ammopiptanthus mongolicus seeds.

[0063] Furthermore, the alfalfa fiber has a diameter of 0.2-0.4 mm and a length of 5-12 mm.

[0064] Furthermore, the corn starch has a particle size of 200 meshes.

[0065] Furthermore, the mineral source potassium humate has a particle size of 100 mesh.

[0066] Furthermore, the benzylaminopurine has a particle size of 300 meshes.

[0067] Furthermore, the particle size of the above-mentioned polyaluminium chloride waste residue is 300 meshes.

[0068] Furthermore, the raw materials of the water-responsive oxygen-containing bubble gel are shown in Table 3 (wherein the weight of one unit mass fraction is 1500 g):

[0069] Table 3

[0070]

[0071] Furthermore, the gelatin is in the form of granules, flakes or powder, and has a relative density of 1.3-1.4.

[0072] Furthermore, the method for preparing the water-responsive oxygen-containing bubble gel comprises the following steps:

[0073] Step 1: Place 81 parts of deionized water into a stainless steel container and add 10 parts of gelatin. Place the stainless steel container on a heating plate and heat to 40°C. Use a stirring rod to gently stir the mixture for 5 minutes during the heating process. Stop heating when the gelatin is completely dissolved.

[0074] Step 2: Add 0.3 parts of sodium dodecylbenzene sulfonate (SDBS) to the solution obtained in step 1, and stir continuously for 3 minutes with a stirring rod to allow SDBS to help the solution generate tiny bubbles.

[0075] Step 3: Add 1 part of glutaraldehyde to the solution obtained in step 2, and place the stainless steel container on a heating plate and heat to 40°C. Stir the mixture with a stirring rod for 1 minute, then stop heating and add 0.5 parts of hydrogen peroxide. Immerse the ultrasonic generator probe in the solution, set the ultrasonic power to 100 W, the ultrasonic frequency to 50kHz, and the treatment time to 1 minute. Then let the solution stand for 10 minutes to cool to room temperature (23°C).

[0076] Step 4: Place the solution obtained in step 3 in a freeze dryer and precool for 10 minutes at a precooling temperature of -15°C.

[0077] Step 5: After freeze-drying the solid obtained in step 4 in a freeze dryer for 2 hours, the solid was taken out and broken into blocks with a side length of less than 1.5 cm to obtain a water-responsive oxygen-containing bubble gel.

[0078] Furthermore, the method for preparing the growth domain-carrying artificial aggregate comprises the following steps:

[0079] Step 1: Multi-source pretreatment:

[0080] Ordos apricot seeds: ① Place the seeds in a pneumatic shelling machine for pneumatic shelling treatment, the processing air pressure is 0.1 Mpa, and the processing time is 5S; ② Place the shelled seeds in an oxygen-rich environment for 1 hour for high-concentration oxygen treatment, and the oxygen concentration is 40%; ③ Expose the seeds to a normal oxygen environment for deoxygenation treatment for 10 minutes; ④ Soak the seeds in warm water (40℃) for 24 hours and set aside.

[0081] Jungar Sea Red Seeds: Soak the seeds in warm water (40℃) for 16 hours and set aside.

[0082] Ammopiptanthus mongolicus seeds: ① Soak the seeds in warm water (40℃) for 24 hours; ② Take out the seeds and wipe off the moisture on the surface, then soak and disinfect them in a 0.5% potassium permanganate aqueous solution for 30 minutes; ③ Take out the seeds and dry them for later use.

[0083] Step 2: Place 15 parts of corn starch and 40% of 18 parts of water in a blender, stir for 30 seconds at a speed of 100 rpm, add 22 parts of alfalfa fiber and continue stirring for 30 seconds at a speed of 60 rpm.

[0084] Step 3: Dissolve 0.1 parts of benzylaminopurine in 95% ethanol and place it in step 2, the ratio of benzylaminopurine to ethanol is 10 mg / ml; then put 2 parts of mineral potassium humate, 40 parts of manure soil and the remaining water into a blender and continue to stir for 60 seconds, the blender speed is 60 rpm. Then put 7 parts of water-responsive oxygen-containing bubble gel into the blender and continue to stir for 10 seconds, the blender speed is 40 rpm.

[0085] Step 4: After coating the mixture obtained in step 3 with 2 parts of multi-source seeds, put it into a disc granulator for spheroidization treatment, control the coating layer thickness to 25 mm, and then put the spheroidized aggregate into a rubber steel ball electromagnetic fracturing device for aggregate surface fracturing treatment, set the fracturing value to 0.1 MPa, and the treatment time to 1 min.

[0086] Step 5: Place the spherical aggregate obtained in step 4 into the disc granulator again, and coat its surface with a layer of polyaluminium chloride waste residue, and control the coating thickness to be 1.5 mm. Place the coated spherical aggregate in a cool and dry place and dry it at room temperature for 1 hour. Then place it in the rubber steel ball electromagnetic fracturing device again for aggregate surface fracturing treatment, set the fracturing value to 0.1Mpa, and the treatment time is 1min.

[0087] Step 6: Place the aggregate obtained in step 5 in water at a temperature of 21° C. for water bath curing for 7 days to obtain artificial aggregate containing growth zones and seeds.

[0088] Specifically, the xanthan gum has a particle size of 5 μm.

[0089] Specifically, the cassava starch glue has a particle size of 10 μm.

[0090] Specifically, the urea has a particle size of 0.85 mm.

[0091] Specifically, the glycerol has a density of 1.2 g / cm 3 .

[0092] Specifically, the method for preparing the ecological seed-carrying slurry for the slope of the mine dump comprises the following steps:

[0093] Step 1: Add 80% of 45 parts of water into the mixing equipment;

[0094] Step 2: Place 1 part of xanthan gum and 5 parts of tapioca starch gum in a blender and stir for 10 minutes at a speed of 80 rpm to ensure that they are completely dissolved and the slurry has no lumps;

[0095] Step 3: Place 1 part of urea and 3 parts of glycerol in a blender and stir for 6 minutes at a speed of 80 rpm to ensure that they are stirred evenly;

[0096] Step 4: Slowly place 1 portion of artificial aggregate containing growth zone and seeds in a mixer and stir for 1 minute at a speed of 40 rpm;

[0097] Step 5: Place 30 parts of in-situ clay, 2 parts of xylo-oligosaccharides and the remaining water in a mixer and stir for 2 minutes at a speed of 40 rpm. Ensure that the mixture is evenly stirred to obtain the ecological seed-carrying slurry for the slope of the mine dump.

[0098] Specifically, the construction method of the ecological seed-carrying slurry on the slope of the mine dump adopts the in-situ site-type layered hole sowing method, including the following steps:

[0099] Step 1: Dig a cylindrical point-type spraying hole with a depth of 50 cm and a diameter of 60 cm, vertically up and down;

[0100] Step 2: Carry out in-situ stratified hole sowing of ecological seed-carrying slurry on the slope of the mine dump:

[0101] The first layer of spraying: use the standard nozzle of the spraying machine, the nozzle diameter is 150mm, and the spray outlet pressure is 0.2MPa. Spray a layer of artificial aggregate slurry without growth zone and seed, the spraying thickness is 30cm, and ensure that the slurry is evenly covered on the soil surface to form a stable base. This layer can ensure that the bottom soil is moist and convenient for plant growth;

[0102] Second layer of spraying: After 15 minutes when the first layer of slurry is slightly solidified, the second layer of spraying is carried out. Use the standard nozzle of the spraying machine, the nozzle diameter is 200mm, and the spray outlet pressure is 0.1MPa. Spray a layer of artificial aggregate slurry containing growth zone and seeds, the spraying thickness is 12cm, to ensure that the seeds can take root and germinate in the bottom matrix. The sprayed slurry should be evenly covered to further enhance the stability and adhesion of the slurry;

[0103] The third layer of spraying: After the second layer of slurry is slightly solidified for 10 minutes, the third layer of spraying is carried out. Use the standard nozzle of the spraying machine, the nozzle diameter is 150mm, and the spraying pressure is 0.1MPa. Spray a layer of artificial aggregate slurry without growth zone and seed carrying, the spraying thickness is 8cm, to help moisturize and promote better germination of seeds.

[0104] Step 4: After the spraying is completed, water it regularly and manage the humidity to keep the soil moist. The first watering is done after 7 days and the second watering is done after 18 days.

[0105] Example 2

[0106] The raw materials of the ecological seed-carrying slurry for the slope of the mine dump are shown in Table 4 (wherein the weight of one unit mass portion is 1500 g):

[0107] Table 4

[0108]

[0109] Specifically, the particle size of the artificial aggregate containing growth domains and seeds is 78 mm, and its raw materials are shown in Table 5 (wherein the weight of one unit mass portion is 1500 g):

[0110] Table 5

[0111]

[0112] Furthermore, the above multi-source seeds include: Ordos apricot seeds with a particle size of 15-20 mm, Jungar sea red seeds with a particle size of 7-12 mm, and Ammopiptanthus mongolicus seeds with a particle size of 7-10 mm. They respectively include the following mass parts: 21 parts of Ordos apricot seeds, 28 parts of Jungar sea red seeds, and 51 parts of Ammopiptanthus mongolicus seeds.

[0113] Furthermore, the alfalfa fiber has a diameter of 0.2-0.4 mm and a length of 5-12 mm.

[0114] Furthermore, the corn starch has a particle size of 200 meshes.

[0115] Furthermore, the mineral source potassium humate has a particle size of 100 mesh.

[0116] Furthermore, the benzylaminopurine has a particle size of 300 meshes.

[0117] Furthermore, the particle size of the above-mentioned polyaluminium chloride waste residue is 300 meshes.

[0118] Furthermore, the raw materials of the water-responsive oxygen-containing bubble gel are shown in Table 6 (wherein the weight of one unit mass fraction is 1500 g):

[0119] Table 6

[0120]

[0121] Furthermore, the gelatin is in the form of granules, flakes or powder, and has a relative density of 1.3-1.4.

[0122] Furthermore, the method for preparing the water-responsive oxygen-containing bubble gel comprises the following steps:

[0123] Step 1: Place 83 parts of deionized water into a stainless steel container and add 13 parts of gelatin. Place the stainless steel container on a heating plate and heat to 45°C. Use a stirring rod to gently stir the mixture for 7 minutes during the heating process. Stop heating when the gelatin is completely dissolved.

[0124] Step 2: Add 0.4 parts of sodium dodecylbenzene sulfonate (SDBS) to the solution obtained in step 1, and stir continuously for 4 minutes with a stirring rod to allow SDBS to help the solution generate tiny bubbles.

[0125] Step 3: Add 1.5 parts of glutaraldehyde to the solution obtained in step 2, and place the stainless steel container on a heating plate and heat to 45°C. Stir the mixture with a stirring rod for 1 minute, then stop heating and add 1.4 parts of hydrogen peroxide. Immerse the ultrasonic generator probe in the solution, set the ultrasonic power to 100 W, the ultrasonic frequency to 50kHz, and the treatment time to 1 minute. Then let the solution stand for 12 minutes to cool to room temperature (23°C).

[0126] Step 4: Place the solution obtained in step 3 in a freeze dryer and precool for 10 minutes at a precooling temperature of -15°C.

[0127] Step 5: After freeze-drying the solid obtained in step 4 in a freeze dryer for 2 hours, the solid was taken out and broken into blocks with a side length of less than 1.5 cm to obtain a water-responsive oxygen-containing bubble gel.

[0128] Furthermore, the method for preparing the growth domain-carrying artificial aggregate comprises the following steps:

[0129] Step 1: Multi-source pretreatment:

[0130] Ordos apricot seeds: ① Place the seeds in a pneumatic shelling machine for pneumatic shelling treatment, the processing air pressure is 0.1 Mpa, and the processing time is 5S; ② Place the shelled seeds in an oxygen-rich environment for 2 hours for high-concentration oxygen treatment, and the oxygen concentration is 50%; ③ Expose the seeds to a normal oxygen environment for deoxygenation treatment for 12 minutes; ④ Soak the seeds in warm water (40℃) for 24 hours and set aside.

[0131] Jungar Sea Red Seeds: Soak the seeds in warm water (40℃) for 24 hours and set aside.

[0132] Ammopiptanthus mongolicus seeds: ① Soak the seeds in warm water (40℃) for 24 hours; ② Take out the seeds and wipe off the moisture on the surface, then soak and disinfect them in a 0.5% potassium permanganate aqueous solution for 30 minutes; ③ Take out the seeds and dry them for later use.

[0133] Step 2: Place 20 parts of corn starch and 40% of 19 parts of water in a blender, stir for 45 seconds at a speed of 100 rpm, add 26 parts of alfalfa fiber and continue stirring for 45 seconds at a speed of 80 rpm.

[0134] Step 3: Dissolve 0.2 parts of benzylaminopurine in 95% ethanol and place it in step 2, the ratio of benzylaminopurine to ethanol is 10 mg / ml; then put 4 parts of mineral potassium humate, 45 parts of manure soil and the remaining water into a blender and continue to stir for 100 seconds, the blender speed is 80 rpm. Then put 10 parts of water-responsive oxygen-containing bubble gel into the blender and continue to stir for 15 seconds, the blender speed is 40 rpm.

[0135] Step 4: After coating the mixture obtained in step 3 with 2.5 parts of multi-source seeds, put it into a disc granulator for spheroidization treatment, control the coating layer thickness to 30 mm, and then put the spheroidized aggregate into a rubber steel ball electromagnetic fracturing device for aggregate surface fracturing treatment, set the fracturing value to 0.1 MPa, and the treatment time to 1 min.

[0136] Step 5: Place the spherical aggregate obtained in step 4 into the disc granulator again, and coat its surface with a layer of polyaluminium chloride waste residue, and control the coating thickness to be 1.5 mm. Place the coated spherical aggregate in a cool and dry place and dry it at room temperature for 2 hours. Then place it in the rubber steel ball electromagnetic fracturing device again for aggregate surface fracturing treatment, set the fracturing value to 0.1Mpa, and the treatment time is 1min.

[0137] Step 6: Place the aggregate obtained in step 5 in water at a temperature of 21° C. for water bath curing for 7 days to obtain artificial aggregate containing growth zones and seeds.

[0138] Specifically, the xanthan gum has a particle size of 5 μm.

[0139] Specifically, the cassava starch glue has a particle size of 10 μm.

[0140] Specifically, the urea has a particle size of 0.85 mm.

[0141] Specifically, the glycerol has a density of 1.2 g / cm 3 .

[0142] Specifically, the method for preparing the ecological seed-carrying slurry for the slope of the mine dump comprises the following steps:

[0143] Step 1: Add 80% of 50 parts of water into the mixing equipment;

[0144] Step 2: Place 2 parts of xanthan gum and 7 parts of tapioca starch gum in a blender and stir for 10 minutes at a speed of 80 rpm to ensure that they are completely dissolved and the slurry has no lumps;

[0145] Step 3: Place 1.5 parts of urea and 4 parts of glycerol in a blender and stir for 8 minutes at a speed of 80 rpm to ensure that they are stirred evenly;

[0146] Step 4: slowly put 2 portions of artificial aggregate containing growth zone and seeds into a mixer and stir for 1 minute at a speed of 40 rpm;

[0147] Step 5: Place 35 parts of in-situ clay, 3.5 parts of xylo-oligosaccharides and the remaining water in a mixer and stir for 3 minutes at a speed of 40 rpm. Ensure that the mixture is evenly stirred to obtain the ecological seed-carrying slurry for the slope of the mine dump.

[0148] Specifically, the construction method of the ecological seed-carrying slurry on the slope of the mine dump adopts the in-situ site-type layered hole sowing method, including the following steps:

[0149] Step 1: Dig a cylindrical point-type spraying hole with a depth of 55 cm and a diameter of 70 cm, vertically up and down;

[0150] Step 2: Carry out in-situ stratified hole sowing of ecological seed-carrying slurry on the slope of the mine dump:

[0151] The first layer of spraying: use the standard nozzle of the spraying machine, the nozzle diameter is 150mm, and the spray outlet pressure is 0.2MPa. Spray a layer of artificial aggregate slurry without growth zone and seed, the spraying thickness is 33cm, and ensure that the slurry is evenly covered on the soil surface to form a stable base. This layer can ensure that the bottom soil is moist and convenient for plant growth;

[0152] Second layer of spraying: After 15 minutes when the first layer of slurry is slightly solidified, the second layer of spraying is carried out. Use the standard nozzle of the spraying machine, the nozzle diameter is 200mm, and the spray outlet pressure is 0.1MPa. Spray a layer of artificial aggregate slurry containing growth zone and seeds, the spraying thickness is 13cm, to ensure that the seeds can take root and germinate in the bottom matrix. The sprayed slurry should be evenly covered to further enhance the stability and adhesion of the slurry;

[0153] The third layer of spraying: After the second layer of slurry is slightly solidified for 10 minutes, the third layer of spraying is carried out. Use the standard nozzle of the spraying machine, the nozzle diameter is 150mm, and the spraying pressure is 0.1MPa. Spray a layer of artificial aggregate slurry without growth zone and seed carrying, the spraying thickness is 9cm, which helps to keep moisture and promote better germination of seeds.

[0154] Step 4: After the spraying is completed, water it regularly and manage the humidity to keep the soil moist. The first watering is done after 7 days and the second watering is done after 18 days.

[0155] Example 3

[0156] The raw materials of the ecological seed-carrying slurry for the slope of the mine dump are shown in Table 7 (wherein the weight of one unit mass portion is 1500 g):

[0157] Table 7

[0158]

[0159] Specifically, the particle size of the artificial aggregate containing growth domain and carrying seeds is 90 mm, and its raw materials are shown in Table 8 (wherein the weight of one unit mass portion is 1500 g):

[0160] Table 8

[0161]

[0162] Furthermore, the above multi-source seeds include: Ordos apricot seeds with a particle size of 15-20 mm, Jungar sea red seeds with a particle size of 7-12 mm, and Ammopiptanthus mongolicus seeds with a particle size of 7-10 mm. They respectively include the following mass parts: 23 parts of Ordos apricot seeds, 30 parts of Jungar sea red seeds, and 55 parts of Ammopiptanthus mongolicus seeds.

[0163] Furthermore, the alfalfa fiber has a diameter of 0.2-0.4 mm and a length of 5-12 mm.

[0164] Furthermore, the corn starch has a particle size of 200 meshes.

[0165] Furthermore, the mineral source potassium humate has a particle size of 100 mesh.

[0166] Furthermore, the benzylaminopurine has a particle size of 300 meshes.

[0167] Furthermore, the particle size of the above-mentioned polyaluminium chloride waste residue is 300 meshes.

[0168] Furthermore, the raw materials of the water-responsive oxygen-containing bubble gel are shown in Table 9 (wherein the weight of one unit mass fraction is 1500 g):

[0169] Table 9

[0170]

[0171] Furthermore, the gelatin is in the form of granules, flakes or powder, and has a relative density of 1.3-1.4.

[0172] Furthermore, the method for preparing the water-responsive oxygen-containing bubble gel comprises the following steps:

[0173] Step 1: Place 85 parts of deionized water in a stainless steel container and add 15 parts of gelatin. Place the stainless steel container on a heating plate and heat to 50°C. Use a stirring rod to gently stir the mixture for 10 minutes during the heating process. Stop heating when the gelatin is completely dissolved.

[0174] Step 2: Add 0.5 parts of sodium dodecylbenzene sulfonate (SDBS) to the solution obtained in step 1, and stir continuously for 5 minutes with a stirring rod to allow SDBS to help the solution generate tiny bubbles.

[0175] Step 3: Add 2 parts of glutaraldehyde to the solution obtained in step 2, and place the stainless steel container on a heating plate and heat to 45°C. Stir the mixture with a stirring rod for 2 minutes during the heating process, then stop heating and add 2 parts of hydrogen peroxide. Immerse the ultrasonic generator probe in the solution, set the ultrasonic power to 150 W, the ultrasonic frequency to 60kHz, and the treatment time to 2 minutes. Then let the solution stand for 15 minutes to cool to room temperature (24°C).

[0176] Step 4: Place the solution obtained in step 3 in a freeze dryer and precool for 15 minutes at a precooling temperature of -20°C.

[0177] Step 5: After freeze-drying the solid obtained in step 4 in a freeze dryer for 3 hours, the solid was taken out and broken into blocks with a side length of less than 1.5 cm to obtain a water-responsive oxygen-containing bubble gel.

[0178] Furthermore, the method for preparing the growth domain-carrying artificial aggregate comprises the following steps:

[0179] Step 1: Multi-source pretreatment:

[0180] Ordos apricot seeds: ① Place the seeds in a pneumatic shelling machine for pneumatic shelling treatment, the processing air pressure is 0.2 Mpa, and the processing time is 6S; ② Place the shelled seeds in an oxygen-rich environment for 3 hours for high-concentration oxygen treatment, and the oxygen concentration is 60%; ③ Expose the seeds to a normal oxygen environment for deoxygenation treatment for 15 minutes; ④ Soak the seeds in warm water (50℃) for 24 hours and set aside.

[0181] Jungar Sea Red Seeds: Soak the seeds in warm water (50℃) for 24 hours and set aside.

[0182] Ammopiptanthus mongolicus seeds: ① Soak the seeds in warm water (50℃) for 24 hours; ② Take out the seeds and wipe off the moisture on the surface, then soak and disinfect them in a 0.5% potassium permanganate aqueous solution for 30 minutes; ③ Take out the seeds and dry them for later use.

[0183] Step 2: Place 26 parts of corn starch and 40% of 20 parts of water in a blender, stir for 60 seconds at a speed of 120 rpm, add 30 parts of alfalfa fiber and continue stirring for 60 seconds at a speed of 100 rpm.

[0184] Step 3: Dissolve 0.3 parts of benzylaminopurine in 95% ethanol and place it in step 2, the ratio of benzylaminopurine to ethanol is 10 mg / ml; then put 5 parts of mineral potassium humate, 50 parts of manure soil and the remaining water into a blender and continue to stir for 120 seconds, the blender speed is 80 rpm. Then put 12 parts of water-responsive oxygen-containing bubble gel into the blender and continue to stir for 20 seconds, the blender speed is 60 rpm.

[0185] Step 4: After coating the mixture obtained in step 3 with 3 parts of multi-source seeds, put it into a disc granulator for spheroidization treatment, control the coating layer thickness to 35mm, and then put the spheroidized aggregate into a rubber steel ball electromagnetic fracturing device for aggregate surface fracturing treatment, set the fracturing value to 0.2Mpa, and the treatment time to 1min.

[0186] Step 5: Place the spherical aggregate obtained in step 4 into the disc granulator again, and coat its surface with a layer of polyaluminium chloride waste residue, and control the coating thickness to be 2mm. Place the coated spherical aggregate in a cool and dry place and dry it at room temperature for 3 hours. Then place it in the rubber steel ball electromagnetic fracturing device again for aggregate surface fracturing treatment, set the fracturing value to 0.2Mpa, and the treatment time is 1min.

[0187] Step 6: Place the aggregate obtained in step 5 in water at a temperature of 22° C. for water bath curing for 7 days to obtain artificial aggregate containing growth zones and seeds.

[0188] Specifically, the xanthan gum has a particle size of 5 μm.

[0189] Specifically, the cassava starch glue has a particle size of 10 μm.

[0190] Specifically, the urea has a particle size of 0.85 mm.

[0191] Specifically, the glycerol has a density of 1.2 g / cm 3 .

[0192] Specifically, the method for preparing the ecological seed-carrying slurry for the slope of the mine dump comprises the following steps:

[0193] Step 1: Add 80% of 60 parts of water into the mixing equipment;

[0194] Step 2: Place 3 parts of xanthan gum and 10 parts of tapioca starch gum in a blender and stir for 15 minutes at a speed of 100 rpm to ensure that they are completely dissolved and the slurry has no lumps;

[0195] Step 3: Place 2 parts of urea and 5 parts of glycerol in a blender and stir for 10 minutes at a speed of 100 rpm to ensure that they are stirred evenly;

[0196] Step 4: slowly place 3 portions of artificial aggregate containing growth domain and seeds in a mixer and stir for 2 minutes at a speed of 50 rpm;

[0197] Step 5: Place 40 parts of in-situ clay, 5 parts of xylo-oligosaccharides and the remaining water in a mixer and stir for 4 minutes at a speed of 50 rpm. Ensure that the mixture is evenly stirred to obtain the ecological seed-carrying slurry for the slope of the mine dump.

[0198] Specifically, the construction method of the ecological seed-carrying slurry on the slope of the mine dump adopts the in-situ site-type layered hole sowing method, including the following steps:

[0199] Step 1: Dig a cylindrical point-type spraying hole with a depth of 60 cm and a diameter of 80 cm, which is vertical;

[0200] Step 2: Carry out in-situ stratified hole sowing of ecological seed-carrying slurry on the slope of the mine dump:

[0201] The first layer of spraying: use the standard nozzle of the spraying machine, the nozzle diameter is 100mm, and the spray outlet pressure is 0.4MPa. Spray a layer of artificial aggregate slurry without growth zone and seed, the spraying thickness is 35cm, and ensure that the slurry is evenly covered on the soil surface to form a stable base. This layer can ensure that the bottom soil is moist and convenient for plant growth;

[0202] Second layer of spraying: After 20 minutes when the first layer of slurry is slightly solidified, the second layer of spraying is carried out. Use the standard nozzle of the spraying machine, the nozzle diameter is 200mm, and the spray outlet pressure is 0.2MPa. Spray a layer of artificial aggregate slurry containing growth zone and seeds, the spraying thickness is 15cm, to ensure that the seeds can take root and germinate in the bottom matrix. The sprayed slurry should be evenly covered to further enhance the stability and adhesion of the slurry;

[0203] The third layer of spraying: After the second layer of slurry is slightly solidified for 15 minutes, the third layer of spraying is carried out. Use the standard nozzle of the spraying machine, the nozzle diameter is 100mm, and the spraying pressure is 0.2MPa. Spray a layer of artificial aggregate slurry without growth zone and seed carrying, the spraying thickness is 10cm, to help moisturize and promote better germination of seeds.

[0204] Step 4: After the spraying is completed, water it regularly and manage the humidity to keep the soil moist. The first watering is done after 7 days and the second watering is done after 18 days.

[0205] Comparative Example

[0206] Comparative Example 1: There are the following differences between Comparative Example 1 and Example 1. The only difference is that in Comparative Example 1, the method of combining multiple source species into trees and shrubs is cancelled, and the use of Ordos mountain apricot seeds and Junggar sea red seeds is specifically cancelled. Instead, a method of combining grasses and shrubs is adopted accordingly, and ryegrass seeds are specifically selected to replace the cancelled components with the same mass fraction. The remaining steps are exactly the same in Comparative Example 1 and Example 1.

[0207] Comparative Example 2: There are the following differences between Comparative Example 2 and Example 2. The only difference is that in Comparative Example 2, the method of combining multiple source species with trees and shrubs is cancelled, specifically the use of Ordos mountain apricot seeds and Junggar sea red seeds is cancelled, and correspondingly only shrub seeds Ammopiptanthus mongolicus are used to replace the cancelled components with the same mass fraction. The remaining steps are exactly the same in Comparative Example 2 and Example 2.

[0208] Comparative Example 3: There are the following differences between Comparative Example 3 and Example 3. The only difference is that in Comparative Example 3, the method of combining multiple source species with trees and shrubs is cancelled, and specifically the use of Ordos mountain apricot seeds, Junggar sea red seeds, and sand boxwood seeds is cancelled, and correspondingly only the grass seed ryegrass is used to replace the cancelled components with the same mass fraction. The remaining steps are exactly the same in Comparative Example 3 and Example 3.

[0209] Performance Test:

[0210] The vegetation germination rate and vegetation survival rate of the ecological seed-carrying slurry for the slope of the mine dump prepared in Examples 1-3 and Comparative Examples 1-3 were tested, and the test results are shown in Table 10:

[0211] Table 10 below shows the vegetation germination rate and vegetation survival rate of the ecological seed-carrying slurry on the slope of the mine spoil dump prepared in Examples 1-3 and Comparative Examples 1-3.

[0212] Table 10

[0213]

[0214] Referring to the above content, it can be seen that the ecological seed-carrying slurry for the slope of the mine dump prepared in Examples 1-3 of the present invention has significantly higher vegetation germination rate and vegetation survival rate than those of Comparative Examples 1-3. Taking the vegetation survival rate as an example, the difference in vegetation survival rate can be as high as 49%. This strongly proves that the ecological seed-carrying slurry for the slope of the mine dump prepared in Examples 1-3 of the present invention can not only effectively utilize solid waste and reduce costs, but also adopt in-situ point-type layered hole sowing, and can shorten the vegetation restoration cycle in the ecological restoration of the slope, greatly improve the survival rate of tree and shrub seed sources, reduce the number of watering times, save restoration costs, and reduce the workload of management, but also can effectively promote vegetation restoration, enhance slope stability, prevent soil and water loss, slow down runoff and consolidate soil, and provide an efficient and sustainable solution for the ecological restoration of green mines in Inner Mongolia.

[0215] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ecological seed-carrying slurry for the slope of a mine dump, characterized in that: The composition includes the following components by weight: 1-3 parts of artificial aggregate containing growth domain, 1-3 parts of xanthan gum, 5-10 parts of cassava starch gum, 1-2 parts of urea, 3-5 parts of glycerol, 30-40 parts of in-situ clay, 2-5 parts of xylo-oligosaccharide, and 45-60 parts of water; The particle size of the artificial aggregate containing growth domain and carrying seeds is 60-90 mm, and the raw materials thereof include the following components by weight: 2-3 parts of multi-source seeds, 22-30 parts of alfalfa fiber, 15-26 parts of corn starch, 2-5 parts of mineral potassium humate, 0.1-0.3 parts of benzylaminopurine, 40-50 parts of manure soil, 7-12 parts of water-responsive oxygen-containing bubble gel, 4-6 parts of polyaluminium chloride waste residue, and 18-20 parts of water; The multi-source seeds include the following components by mass: 20-23 parts of Ordos apricot seeds, 25-30 parts of Jungar sea red seeds, and 47-55 parts of Ammopiptanthus mongolicus seeds; the particle size of the Ordos apricot seeds is 15-20 mm, the particle size of the Jungar sea red seeds is 7-12 mm, and the particle size of the Ammopiptanthus mongolicus seeds is 7-10 mm; The artificial aggregate containing growth domain and carrying seeds is prepared by the following steps: S21. Multi-source pretreatment: S211. Pretreatment of Ordos apricot seeds: Place the Ordos apricot seeds in an air pressure shelling machine for air pressure shelling treatment, the treatment air pressure is 0.1-0.2 MPa, and the treatment time is 5-7 seconds; the shelled seeds are placed in an oxygen-rich environment with an oxygen concentration of 40%-60% for 1-3 hours for high-concentration oxygen treatment, and then the seeds are exposed to a normal oxygen environment for deoxygenation treatment for 10-15 minutes; the seeds are soaked in warm water at a temperature of 40℃-50℃ for 24 hours, and then taken out for use; S212. Pretreatment of Jungar Sea Red Seeds: Soak the Jungar Sea Red Seeds in warm water at a temperature of 40 ℃ -50 ℃ for 16-24h and remove for later use; S213. Pretreatment of Ammopiptanthus mongolicus seeds: Soak the Ammopiptanthus mongolicus seeds in warm water at a temperature of 40°C-50°C for 24 hours, remove the seeds and wipe off the surface moisture, soak them in an aqueous solution of 0.5-1% potassium permanganate for disinfection for 30-35 minutes, remove the seeds, and dry them for later use; S22. 15-26 parts by mass of corn starch, 18-20 parts by mass of 40% of water were placed in a blender and stirred for 30-60s at a blender speed of 100-120 rpm, 22-30 parts of alfalfa fiber were added and stirred for 30-60s at a blender speed of 60-100 rpm; S23. Dissolve 0.1-0.3 parts of benzylaminopurine in 75%-99% ethanol by mass and place it in the mixture obtained in step S22, the ratio of benzylaminopurine to ethanol is 10 mg / ml; then place 2-5 parts of mineral potassium humate, 40-50 parts of manure soil and the remaining parts of water by mass into a blender and continue stirring for 60-120s at a blender speed of 60-80 rpm; then place 7-12 parts of water-responsive oxygen-containing bubble gel into a blender and continue stirring for 10-20s at a blender speed of 40-60 rpm; S24. After coating the mixture obtained in step S23 with 2-3 parts of multi-source seeds, the mixture is placed in a disc granulator for spheroidization, and the coating thickness is controlled to be 25-35 mm. The spheroidized aggregate is then placed in a rubber steel ball electromagnetic fracturing device for aggregate surface fracturing treatment, and the fracturing value is set to 0.1-0.2 MPa, and the treatment time is 1-2 min; S25. The spherical aggregate obtained in step S24 is placed in the disc granulator again, and the surface of the spherical aggregate is coated with a layer of polyaluminium chloride waste residue, and the coating thickness is controlled to be 1.5-2 mm. The coated spherical aggregate is placed in a cool and dry place, and dried at room temperature for 1-3 hours, and then placed in a rubber steel ball electromagnetic fracturing device again for aggregate surface fracturing treatment, and the fracturing value is set to 0.1-0.2 MPa, and the treatment time is 1-2 minutes; S26. The aggregate obtained in step S25 is placed in water at a temperature of 21° C. to 23° C. for water bath curing for 7 days to obtain the artificial aggregate containing growth domains and seeds.

2. The ecological seed-carrying slurry for the slope of a mine dump according to claim 1, characterized in that: The particle size of the xanthan gum is 5-10 μm; the particle size of the cassava starch gum is 10-15 μm; the particle size of the urea is 0.85-2 mm; the density of the glycerol is 1.2 g / cm 3 .

3. The ecological seed-carrying slurry for the slope of a mine dump according to claim 2, characterized in that: The diameter of the alfalfa fiber is 0.2-0.4 mm, and the length is 5-12 mm; the particle size of the corn starch is 200-300 meshes; the particle size of the mineral potassium humate is 100-150 meshes; the particle size of the benzylaminopurine is 300-400 meshes; and the particle size of the polyaluminium chloride waste residue is 300-400 meshes.

4. The ecological seed-carrying slurry for the slope of a mine dump according to claim 2, characterized in that: The water-responsive oxygen-containing bubble gel comprises the following components by mass: 10-15 parts of gelatin, 0.3-0.5 parts of sodium dodecylbenzene sulfonate, 1-2 parts of glutaraldehyde, 0.5-2 parts of hydrogen peroxide, and 81-85 parts of deionized water; the gelatin is in one or more of granular, flaky, and powdery forms, and has a relative density of 1.3-1.

4.

5. The ecological seed-carrying slurry for the slope of a mine dump according to claim 4, characterized in that: The water-responsive oxygen-containing bubble gel is prepared by the following steps: S11. 81-85 parts of deionized water are placed in a stainless steel container by mass, 10-15 parts of gelatin are added, the stainless steel container is placed on a heating plate and heated to 40°C-50°C, and the mixture is gently stirred with a stirring rod during the heating process for 5-10 minutes until the gelatin is completely dissolved and the heating is stopped; S12. 0.3-0.5 parts by mass of sodium dodecylbenzene sulfonate was added to the solution obtained in step S11, and stirred with a stirring rod for 3-5min to help the solution generate tiny bubbles with sodium dodecylbenzene sulfonate; S13. 1-2 parts of glutaraldehyde are added to the solution obtained in step S12 by mass, and the stainless steel container is placed on a heating plate and heated to 40°C-45°C. During the heating process, the mixture is stirred with a stirring rod for 1-2 minutes, and then the heating is stopped and 0.5-2 parts of hydrogen peroxide are added. The ultrasonic generator probe is immersed in the solution, and the ultrasonic power is set to 100 W-150 W and the ultrasonic frequency is set to 50-60 kHz. After the treatment time is 1-2 minutes, the solution is allowed to stand for 10-15 minutes to cool to room temperature; S14. The solution obtained in step S13 is placed in a freeze dryer and precooled for 10-15 minutes at a precooling temperature of -15°C to 20°C; S15. After freeze-drying the solid obtained in step S14 in a freeze dryer for 2-3 hours, the solid is taken out and broken into solid blocks with a side length of less than 1.5 cm to obtain a water-responsive oxygen-containing bubble gel.

6. A method for preparing an ecological seed-carrying slurry for a mine dump slope, which is used to prepare the ecological seed-carrying slurry for a mine dump slope as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1. 80% of 45-60 parts of water by mass is added to a stirring device; S2. 1-3 parts of xanthan gum and 5-10 parts of tapioca starch gum were placed in a blender and stirred for 10-15 min at a blender speed of 80-100 rpm to ensure complete dissolution and no lumps in the slurry; S3. Place 1-2 parts of urea and 3-5 parts of glycerol in a mixer and stir for 6-10min at a mixer speed of 80-100 rpm to ensure uniform mixing; S4. 1-3 parts by mass of artificial aggregate containing growth domains are slowly placed in a mixer and stirred for 1-2min at a mixer speed of 40-60 rpm; S5. Place 30-40 parts by mass of in-situ clay, 2-5 parts by mass of xylo-oligosaccharides and the remaining parts by mass of water in a mixer and stir for 2-4 minutes at a mixer speed of 40-60 rpm to ensure uniform stirring to obtain the ecological seed-carrying slurry for the slope of the mine dump.

7. An application of the ecological seed-carrying slurry for the slope of a mine dump according to any one of claims 1 to 5 in the slope of a mine dump.

8. The application of the ecological seed-carrying slurry for the slope of a mine dump according to claim 7 is characterized in that: The construction method of the ecological seed-carrying slurry on the slope of the mine dump adopts the in-situ point-type layered hole sowing method, including the following steps: S31. Dig a cylindrical point-type spraying hole with a depth of 50-60 cm and a diameter of 60-80 cm vertically; S32. Carry out in-situ stratified seeding of ecological seed-carrying slurry on the slope of the mine dump: S321. The first layer of spraying: using a standard spraying nozzle of the spraying machine, the nozzle diameter is 100-150mm, the spray outlet pressure is 0.2-0.4 MPa, spraying a layer of slurry without the artificial aggregate containing the growth field, the spraying thickness is 30-35cm, ensuring that the slurry is evenly covered on the soil surface to form a stable base, ensuring that the bottom soil is moist, which is convenient for plant growth; S322. Second layer of spraying: After waiting for 15-20 minutes for the first layer of slurry to solidify slightly, the second layer of spraying is carried out, using a standard nozzle of the spraying machine with a nozzle diameter of 150-200mm and a spray outlet pressure of 0.1-0.2 MPa. Spray a layer of ecological seed-carrying slurry on the slope of the mine dump with a spraying thickness of 12-15cm to ensure that the seeds can take root and germinate in the bottom matrix; S323. The third layer of spraying: After waiting for 10-15 minutes for the second layer of slurry to solidify slightly, the third layer of spraying is carried out, using a standard nozzle of the spraying machine, the nozzle diameter is 100-150mm, the spraying pressure is 0.1-0.2 MPa, and a layer of slurry without the artificial aggregate containing the growth domain is sprayed, and the spraying thickness is 8-10cm, which helps to keep moisture and promote better germination of seeds; S33. After the spraying is completed, water and humidity management are carried out regularly to keep the soil appropriately moist. The first watering is carried out after 7 days and the second watering is carried out after 18 days. The difference between the slurry not containing the artificial aggregate containing growth domain seeds and the ecological seed-carrying slurry for the slope of the mine spoil dump is only whether the slurry components contain the artificial aggregate containing growth domain seeds.

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