A method for fiber greening and repairing of a mine rock slope

Abstract

The application discloses a kind of fibrous green remediation method of mining area rock slope, water, urea, calcium hydroxide, potassium dihydrogen phosphate and sorbitol are uniformly mixed to obtain nutrient solution, take grass seed, plant fiber, polyacrylamide microspheres, polyvinyl alcohol and soil are mixed to obtain mixture;The slope is cut, and the slope surface is cleaned and leveled, then the nutrient solution is sprayed, then the mixture is sprayed on the slope surface;Take zeolite, silane coupling agent, water, alkali lignin, epoxy resin, first silane coupling agent, zeolite and water are mixed, then alkali lignin and epoxy resin are added in sequence, and after stirring reaction, adhesive is obtained, then the adhesive is sprayed on the treated slope surface;After grass seed sprouts, water once every 4-5 days, and fertilize once every 30-40 days.The application can improve the water-retaining capacity of slope soil, reduce soil water loss, and improve the soil fertility of slope, promote the growth of plants on the soil, and achieve the effect of ecological restoration and greening.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of slope greening and restoration, and particularly relates to a fiber greening and restoration method for a rock slope in a mining area. BACKGROUND

[0002] A rock slope is a free surface formed by a rock mass under the action of natural gravity or human action. During the mining process of open-pit coal mines, copper mines and the like, the ecological environment and regional underground water in a mining area are damaged to different degrees, and a large number of rock slopes are generated. Due to poor soil physical structure, extreme barrenness, poor water and fertilizer retention capacity and the like, the ecological restoration of these bare slopes is difficult. At present, a method of using guest soil for spraying and seeding is used for ecological restoration of a rock slope. Specifically, a substrate layer is established on the rock slope, and then seeds are sprayed and seeded on the substrate layer and maintained to achieve the purpose of vegetation restoration. The sprayed materials include organic matter, fertilizer, water-retaining agent, binder, pH buffer and the like. However, due to the complex soil structure of the slope in the mining area, poor water and fertilizer retention capacity, and the lack of strength of the guest soil, the soil fixation effect on the slope is not obvious, especially under the action of rainwater, the phenomenon of water and soil loss is easily generated, and good greening and slope protection effects cannot be achieved. Therefore, it is necessary to research and improve the ecological restoration method and develop suitable slope fixation materials. SUMMARY

[0003] In view of the above problems, the present application discloses a fiber greening and restoration method for a rock slope in a mining area, which can improve the water retention capacity of the slope soil, reduce the water loss of the soil, improve the soil fertility of the slope, promote the growth of plants on the plant soil, and achieve the effect of ecological restoration and greening.

[0004] The present application is implemented by using the following technical scheme:

[0005] A fiber greening and restoration method for a rock slope in a mining area, comprising the following steps:

[0006] (1) 100 parts of water, 15-20 parts of urea, 3-5 parts of calcium hydroxide, 1-2 parts of potassium dihydrogen phosphate and 3-5 parts of sorbitol are uniformly mixed to obtain a nutrient solution, and 20-30 parts of grass seeds, 5-10 parts of plant fiber, 3-5 parts of polyacrylamide microspheres, 1-3 parts of polyvinyl alcohol and 30-40 parts of soil are uniformly mixed to obtain a mixture;

[0007] (2) The slope is cut and the slope surface is cleaned and leveled, and then the nutrient solution obtained in step (1) is sprayed, the spraying amount is 100-200 mL / m 2 , and then the mixture obtained in step (1) is sprayed and seeded on the slope surface, the thickness of the sprayed and seeded mixture is 15-20 cm;

[0008] (3) taking 10-20 parts of zeolite, 1-5 parts of silane coupling agent, 100 parts of water, 20-30 parts of alkali lignin, and 3-5 parts of epoxy resin by weight, mixing the silane coupling agent, zeolite and water at 120-140℃ for 5-8h, then cooling to 50-60℃, and then adding the alkali lignin and epoxy resin in sequence, stirring for 2-4h and naturally cooling to room temperature to obtain the adhesive, then spraying the adhesive on the slope surface treated in step (2) at a spraying amount of 50-80mL / m 2 ;

[0009] (4) watering every 4-5 days after the grass seeds germinate, and fertilizing every 30-40 days.

[0010] Further, the plant fiber in step (1) is one or a combination of rice straw fiber, straw fiber and wood fiber.

[0011] Further, the preparation method of the polyacrylamide microspheres is that acrylamide and polyvinyl alcohol are first added to water and stirred at 35-45℃ for 1-2h, then heated to 70-80℃, and then ammonium persulfate and sodium bisulfite are added in sequence, and then stirred for 2-4h, and then cooled to 50℃ to obtain an aqueous solution, and the mass ratio of the acrylamide, polyvinyl alcohol, water, ammonium persulfate and sodium bisulfite is (5-10):(1-3):100:(0.5-0.8):(0.2-0.3); liquid paraffin is taken and mixed with span80 under stirring to obtain an oil phase solution, and the volume ratio of the liquid paraffin and span80 is 100:(3-5); the oil phase solution is heated to 50℃, and then the aqueous solution is slowly added to the oil phase solution, stirred and then glutaraldehyde is added and reacted for 3-5h, and the volume ratio of the aqueous solution and oil phase solution is 1:10, and the volume ratio of the glutaraldehyde and aqueous solution is 1:20, and then naturally cooled to room temperature, and then the oil phase solution is removed and centrifuged to obtain a precipitate, and then the precipitate is washed with ethanol and dried to obtain the polyacrylamide microspheres.

[0012] Further, the slope is cut in step (2), and the slope is kept less than 40°.

[0013] Further, the zeolite in step (3) is obtained by hydrochloric acid treatment, specifically, the zeolite is first added to a hydrochloric acid solution with a mass fraction of 5-10%, stirred at 80-90℃ for 3-4h, then filtered and washed with water for 2-3 times, and then dried to obtain acidified zeolite, and then the acidified zeolite is crushed to pass through a 100-120 mesh sieve. The acidified zeolite can better react with the silane coupling agent, thereby improving the modification effect of the silane coupling agent on the zeolite.

[0014] Further, in step (3), the silane coupling agent, zeolite and water are mixed and reacted, and then the alkali lignin and epoxy resin are added in sequence and reacted under stirring at a speed of 200-400 r / min for 2-4 h.

[0015] Compared with the prior art, the technical scheme has the following beneficial effects:

[0016] 1. The nutrient solution prepared from urea, calcium hydroxide, potassium dihydrogen phosphate and sorbitol is sprayed on the slope to improve the fertility of the surface soil of the slope, and the calcium hydroxide can adjust the pH value of the surface soil, and the sorbitol can improve the dispersion and penetration of the nutrient solution in the surface soil, so that the nutrient solution can be uniformly dispersed in the surface soil layer, thereby improving the improvement effect of the nutrient solution on the surface soil.

[0017] 2. The mixture prepared by mixing grass seeds, plant fibers, polyacrylamide microspheres, polyvinyl alcohol and soil is sprayed on the surface of the slope to fix and adhere the grass seeds to the slope, which is beneficial to the germination and growth of the grass seeds, thereby realizing the soil fixation and greening of the slope, wherein the added plant fibers can provide nutrients for the growth of the grass seeds, and the plant fibers also have a certain hygroscopicity to play a water retention role; the polyacrylamide microspheres can play a water retention role due to their good hygroscopicity, and can also play a soil fixation role due to their adhesion with the soil; the added polyvinyl alcohol can promote the uniform dispersion of the plant fibers, polyacrylamide microspheres and the like in the soil, thereby improving their improvement effect on the soil.

[0018] 3. The silane coupling agent is used to modify the zeolite, and then the modified zeolite is mixed with lignin and epoxy resin to prepare an adhesive, which is sprayed on the slope, so that the modified zeolite, lignin and epoxy resin are physically cross-linked and bonded with the soil to play a soil fixation role, and the porous structure of the modified zeolite is beneficial to maintaining good ventilation of the soil, promoting the growth of the grass seeds and the absorption of water and fertilizer in the soil by the plant root system. DETAILED DESCRIPTION

[0019] The present application is further illustrated by the following examples, but is not limited to the following examples.

[0020] Example 1: A fiber greening and repairing method for a mine rock slope, comprising the following steps:

[0021] (1) 100 parts of water, 18 parts of urea, 4 parts of calcium hydroxide, 1.5 parts of potassium dihydrogen phosphate and 4 parts of sorbitol are uniformly mixed to obtain a nutrient solution, and 25 parts of grass seeds, 8 parts of plant fibers, 4 parts of polyacrylamide microspheres, 2 parts of polyvinyl alcohol and 35 parts of soil are uniformly mixed to obtain a mixture;

[0022] The plant fiber is a mixed combination of rice straw fiber and straw fiber;

[0023] The preparation method of the polyacrylamide microspheres is that acrylamide and polyvinyl alcohol are added into water and stirred at 40℃ for 1.5h, then heated to 75℃, and then ammonium persulfate and sodium bisulfite are sequentially added, followed by stirring for 3h, and then the water phase solution is obtained by cooling to 50℃, and the mass ratio of the acrylamide, polyvinyl alcohol, water, ammonium persulfate and sodium bisulfite is 8:2:100:0.7:0.25; liquid paraffin is taken and mixed with span80 under stirring to obtain an oil phase solution, and the volume ratio of the liquid paraffin and span80 is 100:4; the oil phase solution is heated to 50℃, and then the water phase solution is slowly added into the oil phase solution under stirring, and then glutaraldehyde is added and reacted for 4h, and the volume ratio of the water phase solution and the oil phase solution is 1:10, and the volume ratio of the glutaraldehyde and the water phase solution is 1:20, and then the mixture is naturally cooled to room temperature, and then the oil phase solution is removed, and the precipitate is separated by centrifugation, and then the precipitate is washed with ethanol and dried to obtain the polyacrylamide microspheres;

[0024] (2) The slope is cut to keep the slope less than 40°, and the slope surface is cleaned and leveled, and then the nutrient solution obtained in step (1) is sprayed, and the spraying amount is 150 mL / m 2 , and then the mixture obtained in step (1) is sprayed and planted on the slope surface, and the spraying and planting thickness is 18 cm;

[0025] (3) 15 parts of zeolite, 4 parts of silane coupling agent, 100 parts of water, 25 parts of alkali lignin and 4 parts of epoxy resin are taken, the silane coupling agent, the zeolite and the water are mixed and reacted at 130℃ for 7h, and then cooled to 55℃, and then the alkali lignin and the epoxy resin are sequentially added and reacted under stirring at a speed of 300r / min for 3h, and then naturally cooled to room temperature to obtain the adhesive, and then the adhesive is sprayed on the slope surface treated in step (2), and the spraying amount is 75 mL / m 2 ;

[0026] The zeolite is obtained by hydrochloric acid treatment, specifically, the zeolite is added into a hydrochloric acid solution with a mass fraction of 8%, stirred and treated at 85℃ for 3.5h, filtered, washed with water for 3 times, and then dried to obtain acidified zeolite, and then the acidified zeolite is crushed to pass through a 120 mesh sieve;

[0027] (4) Water is poured every 5 days after the grass seeds germinate, and fertilizer is applied every 35 days.

[0028] Example 2: A fiber greening repair method for a rock slope in a mining area, comprising the following steps:

[0029] (1) by weight, take 100 parts of water, 15 parts of urea, 3 parts of calcium hydroxide, 1 part of potassium dihydrogen phosphate and 3 parts of sorbitol are uniformly mixed to obtain a nutrient solution, and 20 parts of grass seeds, 5 parts of plant fiber, 3 parts of polyacrylamide microspheres, 1 part of polyvinyl alcohol and 30 parts of soil are uniformly mixed to obtain a mixture;

[0030] The plant fiber is rice straw fiber;

[0031] The preparation method of the polyacrylamide microspheres is that acrylamide and polyvinyl alcohol are added to water and stirred at 35℃ for 1h, then heated to 70℃, and then ammonium persulfate and sodium bisulfite are added in sequence, followed by stirring for 2h, and then cooled to 50℃ to obtain an aqueous phase solution, and the mass ratio of acrylamide, polyvinyl alcohol, water, ammonium persulfate and sodium bisulfite is 5:1:100:0.5:0.2; liquid paraffin is taken and mixed with span 80 under stirring conditions to obtain an oil phase solution, and the volume ratio of liquid paraffin and span 80 is 100:3; the oil phase solution is heated to 50℃, then the aqueous phase solution is slowly added to the oil phase solution, stirred and added with glutaraldehyde for 3h, the volume ratio of the aqueous phase solution and the oil phase solution is 1:10, the volume ratio of the glutaraldehyde and the aqueous phase solution is 1:20, then naturally cooled to room temperature, then the oil phase solution is removed, centrifuged to obtain a precipitate, then the precipitate is washed with ethanol and dried to obtain polyacrylamide microspheres;

[0032] (2) The slope is cut to maintain a slope of less than 40°, and the slope surface is cleaned and leveled, then the nutrient solution obtained in step (1) is sprayed, and the spraying amount is 100mL / m 2 Then the mixture obtained in step (1) is sprayed and planted on the slope surface, and the spraying and planting thickness is 15cm;

[0033] (3) by weight, take 10 parts of zeolite, 1 part of silane coupling agent, 100 parts of water, 20 parts of alkali lignin and 3 parts of epoxy resin, first mix the silane coupling agent, zeolite and water and react at 120℃ for 5h, then cool to 50℃, then add the alkali lignin and epoxy resin in sequence and react for 2h under stirring at a speed of 200r / min, then naturally cool to room temperature to obtain an adhesive, then the adhesive is sprayed on the slope surface treated in step (2), and the spraying amount is 50mL / m 2 ;

[0034] The zeolite is obtained by hydrochloric acid treatment, specifically, first add the zeolite to a 5% hydrochloric acid solution, stir at 80℃ for 3h, then filter and wash with water for 2 times, then dry to obtain acidified zeolite, then crush the acidified zeolite to pass through a 100 mesh sieve;

[0035] (4) Water is poured every 4 days after the grass seeds germinate, and fertilizer is applied every 30 days.

[0036] Embodiment 3: A method for fiber greening and repairing of a mine rock slope, comprising the following steps:

[0037] (1) 100 parts of water, 16 parts of urea, 3.5 parts of calcium hydroxide, 1.3 parts of potassium dihydrogen phosphate and 3.5 parts of sorbitol are uniformly mixed to obtain a nutrient solution, and 22 parts of grass seeds, 6 parts of plant fibers, 3.5 parts of polyacrylamide microspheres, 1.5 parts of polyvinyl alcohol and 32 parts of soil are uniformly mixed to obtain a mixture;

[0038] The plant fibers are a combination of rice straw fibers and straw fibers;

[0039] The preparation method of the polyacrylamide microspheres is that acrylamide and polyvinyl alcohol are added to water and stirred at 42℃ for 1.5h, then heated to 72℃, and then ammonium persulfate and sodium bisulfite are sequentially added, followed by stirring for 3h, and then the water phase solution is obtained after cooling to 50℃, and the mass ratio of acrylamide, polyvinyl alcohol, water, ammonium persulfate and sodium bisulfite is 6:2:100:0.6:0.25; liquid paraffin is taken and mixed with span80 under stirring conditions to obtain an oil phase solution, and the volume ratio of liquid paraffin and span80 is 100:4; the oil phase solution is heated to 50℃, and then the water phase solution is slowly added to the oil phase solution under stirring and glutaraldehyde is added and reacted for 4h, the volume ratio of the water phase solution and the oil phase solution is 1:10, the volume ratio of glutaraldehyde and the water phase solution is 1:20, and then it is naturally cooled to room temperature, then the oil phase solution is removed, and the precipitate is obtained by centrifugal separation, then the precipitate is washed with ethanol and dried to obtain polyacrylamide microspheres;

[0040] (2) The slope is cut to maintain a slope of less than 40°, and the slope surface is cleaned and leveled, then the nutrient solution obtained in step (1) is sprayed, and the spraying amount is 120mL / m 2 , then the mixture obtained in step (1) is sprayed on the slope surface, and the spraying thickness is 16cm;

[0041] (3) 12 parts of zeolite, 3 parts of silane coupling agent, 100 parts of water, 24 parts of alkali lignin and 4 parts of epoxy resin are mixed at 135℃ for 6h, then cooled to 58℃, and then the alkali lignin and epoxy resin are sequentially added and reacted for 3h under stirring at a speed of 250r / min, and then naturally cooled to room temperature to obtain an adhesive, then the adhesive is sprayed on the slope surface treated in step (2), and the spraying amount is 60mL / m 2 ;

[0042] The zeolite is obtained by hydrochloric acid treatment, specifically, the zeolite is added into a hydrochloric acid solution with a mass fraction of 6%, stirred and treated at 82℃ for 3.5h, then filtered, washed with water twice, dried to obtain acidified zeolite, and then the acidified zeolite is crushed to pass through a 120 mesh sieve;

[0043] (4) Water is sprayed once every 4 days after the grass seeds germinate, and fertilizer is applied once every 40 days.

[0044] Embodiment 4: A fiber greening repair method for a mine rock slope, comprising the following steps:

[0045] (1) 100 parts of water, 20 parts of urea, 5 parts of calcium hydroxide, 2 parts of potassium dihydrogen phosphate and 5 parts of sorbitol are uniformly mixed to obtain a nutrient solution, and 30 parts of grass seeds, 10 parts of plant fibers, 5 parts of polyacrylamide microspheres, 3 parts of polyvinyl alcohol and 40 parts of soil are uniformly mixed to obtain a mixture;

[0046] The plant fiber is wood fiber;

[0047] The preparation method of the polyacrylamide microspheres is that acrylamide and polyvinyl alcohol are added into water and stirred at 45℃ for 2h, then heated to 80℃, and then ammonium persulfate and sodium bisulfite are sequentially added, and then stirred and reacted for 4h, and then cooled to 50℃ to obtain an aqueous phase solution, and the mass ratio of the acrylamide, the polyvinyl alcohol, the water, the ammonium persulfate and the sodium bisulfite is 10:3:100:0.8:0.3; liquid paraffin is taken and mixed with span80 under stirring to obtain an oil phase solution, and the volume ratio of the liquid paraffin and the span80 is 100:5; the oil phase solution is heated to 50℃, and then the aqueous phase solution is slowly added into the oil phase solution, stirred and added with glutaraldehyde for reaction for 5h, the volume ratio of the aqueous phase solution and the oil phase solution is 1:10, and the volume ratio of the glutaraldehyde and the aqueous phase solution is 1:20, and then naturally cooled to room temperature, then the oil phase solution is removed, and the precipitate is centrifugally separated, then the precipitate is washed with ethanol and dried to obtain the polyacrylamide microspheres;

[0048] (2) The slope is cut to maintain a slope of less than 40°, and the slope surface is cleaned and leveled, and then the nutrient solution obtained in step (1) is sprayed, and the spraying amount is 200mL / m 2 Then the mixture obtained in step (1) is sprayed and planted on the slope surface, and the thickness of the spraying and planting is 20cm;

[0049] (3) By weight, take 20 parts zeolite, 5 parts silane coupling agent, 100 parts water, 30 parts alkali lignin, and 5 parts epoxy resin. First, mix the silane coupling agent, zeolite, and water and react at 140℃ for 8 hours. Then, cool to 60℃, and then add alkali lignin and epoxy resin in sequence. React for 4 hours under stirring at 400 r / min. After naturally cooling to room temperature, the adhesive is obtained. Then, the adhesive is sprayed on the slope treated in step (2) at a spraying rate of 80 mL / m. 2 ;

[0050] The zeolite is obtained by hydrochloric acid treatment. Specifically, the zeolite is first added to a 10% hydrochloric acid solution and stirred at 90°C for 4 hours. Then, it is filtered, washed with water three times, dried to obtain acidified zeolite, and then crushed through a 120-mesh sieve.

[0051] (4) Water the grass seeds every 5 days after they sprout and fertilize them every 40 days.

[0052] Comparative Example 1: The fiber greening restoration method for rocky slopes in the mining area described in this comparative example differs from the method described in Example 1 only in that, in step (1), sorbitol is not added to the nutrient solution.

[0053] Comparative Example 2: The fiber greening restoration method for rocky slopes in the mining area described in this comparative example differs from the method described in Example 1 only in that, in step (1), polyacrylamide microspheres are not added to the mixture.

[0054] Comparative Example 3: The fiber greening restoration method for rocky slopes in the mining area described in this comparative example differs from the method described in Example 1 only in that, in step (1), polyvinyl alcohol is not added to the mixture.

[0055] Comparative Example 4: The fiber greening repair method for rocky slopes in the mining area described in this comparative example differs from the method described in Example 1 only in that, in step (1), polyvinyl alcohol is not added to the mixture, but polyacrylamide in an amount equal to that of polyvinyl alcohol is added.

[0056] Comparative Example 5: The fiber greening repair method for rocky slopes in the mining area described in this comparative example differs from the method described in Example 1 only in that, in step (3), zeolite is not added, and an adhesive is prepared directly by mixing silane coupling agent, alkali lignin and epoxy resin.

[0057] Comparative Example 6: The fiber greening repair method for rocky slopes in the mining area described in this comparative example differs from the method described in Example 1 only in that, in step (3), zeolite and silane coupling agent are not added, and the adhesive is prepared directly by mixing alkali lignin and epoxy resin.

[0058] Experimental example: select a limestone mine area in Guangxi province, and divide the slope into several regions, and respectively according to the method described in examples 1-4 and comparative examples 1-6, the slope greening repair is carried out, the survival rate of the planted plants on the slope is counted and processed after 3 months, and the average reduction of the vertical depth of the slope is taken as the measured amount of soil erosion, and the specific results are shown in table 1.

[0059] Table 1: results of slope greening treatment by different methods

[0060]

[0061] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A method of fibrous re-vegetation of a mine site rock slope, characterised by: It comprises the following steps: (1) taking 100 parts of water, 15-20 parts of urea, 3-5 parts of calcium hydroxide, 1-2 parts of potassium dihydrogen phosphate and 3-5 parts of sorbitol by weight, uniformly mixing to obtain a nutrient solution, taking 20-30 parts of grass seeds, 5-10 parts of plant fiber, 3-5 parts of polyacrylamide microspheres, 1-3 parts of polyvinyl alcohol and 30-40 parts of soil to uniformly mix to obtain a mixture; The preparation method of the polyacrylamide microspheres is that acrylamide and polyvinyl alcohol are first added to water and stirred at 35-45℃ for 1-2h, then heated to 70-80℃, and then ammonium persulfate and sodium bisulfite are added in sequence, and then stirred for 2-4h, and then cooled to 50℃ to obtain an aqueous solution, and the mass ratio of acrylamide, polyvinyl alcohol, water, ammonium persulfate and sodium bisulfite is (5-10):(1-3):100:(0.5-0.8):(0.2-0.3); liquid paraffin is taken and mixed with span80 under stirring conditions to obtain an oil phase solution, and the volume ratio of liquid paraffin and span80 is 100:(3-5); the oil phase solution is heated to 50℃, then the aqueous solution is slowly added to the oil phase solution, stirred and then glutaraldehyde is added and reacted for 3-5h, the volume ratio of the aqueous solution and the oil phase solution is 1:10, the volume ratio of the glutaraldehyde and the aqueous solution is 1:20, then it is naturally cooled to room temperature, then the oil phase solution is removed, centrifuged to obtain a precipitate, then the precipitate is washed with ethanol and dried to obtain polyacrylamide microspheres; (2) cutting the slope of the slope, holding the slope less than 40°, and cleaning and leveling the slope surface, then spraying the nutrient solution obtained in step (1), the spraying amount is 100-200 mL / m 2 , then the mixture obtained in step (1) is sprayed on the slope surface, the spraying thickness is 15-20 cm; (3) taking 10-20 parts of zeolite, 1-5 parts of silane coupling agent, 100 parts of water, 20-30 parts of alkali lignin, and 3-5 parts of epoxy resin by weight, first mixing the silane coupling agent, zeolite and water to react at 120-140 °C for 5-8 h, then cooling to 50-60 °C, and then sequentially adding the alkali lignin and epoxy resin to react under stirring at a speed of 200-400 r / min for 2-4 h and then naturally cooling to room temperature to obtain the adhesive, and then spraying the adhesive on the slope surface treated in step (2) at a spraying amount of 50-80 mL / m 2 ; The zeolite is obtained by hydrochloric acid treatment, specifically, first adding zeolite to a hydrochloric acid solution with a mass fraction of 5-10%, stirring and treating at 80-90℃ for 3-4h, then filtering and washing with water for 2-3 times, then drying to obtain acidified zeolite, and then crushing the acidified zeolite to pass through a 100-120 mesh sieve; (4) watering the grass seeds every 4-5 days after germination, and fertilizing every 30-40 days.

2. The method of fiberized re-vegetation of a mine site rock slope according to claim 1, characterized in that: The plant fiber in step (1) is one or a combination of rice straw fiber, straw fiber and wood fiber.

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