CN115492076B - Ecological slope protection implementation method combining urease with fiber and solid waste - Google Patents
Ecological slope protection implementation method combining urease with fiber and solid waste Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
Abstract
The application discloses an ecological slope protection implementation method combining urease and fiber and solid waste, which comprises the following steps: step 1), removing crushed stone garbage on the surface of a side slope for treatment, digging planting holes at equal intervals, sowing plant seeds into the plant planting holes, and re-covering and leveling soil bodies; step 2), spreading high-calcium fly ash at plant planting holes, spraying a homogeneous substance of soybean extract, a carbonamide solution, a calcium source solution and fibers mixed in proportion on a slope by using a spraying machine, and repeatedly spraying the homogeneous substance at intervals; step 3), after the seeds bud, spraying the homogeneous substance on the slope again, and paving a layer of non-woven fabric on the surface for maintenance; the application combines the fiber to effectively utilize the waste concrete blocks and the high-calcium fly ash, can increase the survival rate of vegetation on the side slope, reduces the soil erosion of the side slope, has wide sources of raw materials and simple treatment mode, and can be used for industrial production popularization.
Description
Technical Field
The application relates to the technical field of slope ecological protection engineering, in particular to an ecological slope protection implementation method by combining urease and fiber with solid waste.
Background
Existing solid waste treatments for waste concrete blocks include physical and chemical methods. The physical method is to remove the cement mortar on the outer layer of the concrete block by external force, wherein the external force is most common in heating and grinding, and the method has the defects that natural aggregate is damaged due to high-temperature heating, and the performance is reduced. The chemical method comprises the steps of spraying, drying and the like by using chemical substances to improve the surface pore structure, thereby achieving the effect of improving the performance of the substrate, and has the defects of overlarge economic cost and no practical application value. It is highly desirable to find a safe, efficient, and environmentally friendly method for treating such solid waste.
Disclosure of Invention
The application aims to overcome the defects, and provides an ecological slope protection implementation method combining urease and fiber with solid waste, wherein the solid waste is combined with an emerging biological slope fixing technology to achieve the purpose of vegetation slope protection, and the defects of manpower and material resource consumption, long period, plant growth inconvenience, environmental protection and the like of the existing slope protection technology are avoided.
The application aims to solve the technical problems, and adopts the technical scheme that: an ecological slope protection implementation method combining urease with fiber and solid waste comprises the following steps:
step 1), removing crushed stone garbage on the surface of a side slope for treatment, digging planting holes at equal intervals, sowing plant seeds into the plant planting holes, and re-covering and leveling soil bodies;
step 2), spreading high-calcium fly ash at plant planting holes, spraying a homogeneous substance of soybean extract, a carbonamide solution, a calcium source solution and fibers mixed in proportion on a slope by using a spraying machine, and repeatedly spraying the homogeneous substance at intervals;
and 3) after the seeds bud, spraying the uniform material on the slope again, and paving a layer of non-woven fabric on the surface for maintenance.
Preferably, in the step 1), the plant seeds are bermuda grass seeds, and the plant seeds are dried in the sun for sowing after being washed by pure water, and the sowing density is 8-12g/m 2 The equal interval between adjacent seeds is 15-20cm, and the distance between adjacent plant planting holes is 15-20cm.
Preferably, the extraction method of the soybean extract in the step 2) comprises the following steps: cleaning soybean with pure water, grinding into soybean powder in a wall breaking machine, sieving with a 200-mesh sieve, mixing the soybean powder with distilled water according to a weight ratio of 1:25, fully stirring for 30 minutes, standing for 6 hours until soybean residue is precipitated, centrifuging soybean solution in a centrifuge at 3000r/min for 15 minutes to obtain soybean extract, and storing at 4 ℃ for later use.
Preferably, the method for obtaining the high-calcium fly ash in the step 2) comprises the following steps: the high-calcium fly ash discharged by buying lignite and subbituminous coal as fuel in a local factory is put into a ball mill for ball milling according to the weight ratio of 0.2 percent of sodium hydroxide to 1.
Preferably, the extraction method of the calcium source solution in the step 2) is as follows: purchasing and dismantling waste concrete blocks from construction engineering of a construction site, crushing the waste concrete blocks by using a grinder, sieving the waste concrete blocks by using a standard geotechnical sieve with the thickness of 1mm, mixing the sieved concrete with hydrochloric acid with the thickness of 2mol/L according to the proportion of 1:2, adding sodium hydroxide solution with the thickness of 1mol/L into the mixed solution to adjust the pH value of the mixed solution to 6.5-7.0, and centrifuging the mixed solution in a centrifuge at the speed of 3000r/m for 15 minutes to extract supernatant as a calcium source solution.
Preferably, the fibers in the step 2) are wood fibers or palm fibers, the fibers are washed by deionized water with the pH=7, then treated by an oiling agent, the weight of the oiling agent and the weight ratio of the fibers are 0.3%, the thickness of the coating is about 100nm, and finally the fibers are cut to about 1.7-2.2cm by scissors and mixed in a homogeneous substance.
Preferably, the mixing ratio of the soybean extract, the carbon amide solution and the calcium source solution in the step 2) is 1:0.5:0.5, and the spray-seeding fiber dosage is 8-10g/m 2 The spreading amount of the high-calcium fly ash is 600-800g/m 2 。
Preferably, the amounts of the soybean extract, the carbonamide solution and the calcium source solution sprayed onto the slope in each of the steps 2) and 3) are 1.8-2.2L/m, respectively 2 、0.8-1.2L/m 2 And 0.8 to 1.2L/m 2 。
The beneficial effects of the application are as follows:
(1) The application combines urease-induced calcium carbonate precipitation technology with waste concrete blocks and high-calcium fly ash, overcomes the defects that the waste concrete blocks cannot be treated in the construction industry and the high-calcium fly ash generated by coal combustion cannot be utilized in large scale in industrial production so as to be discarded and endanger the environment, has low manufacturing cost, and can permeate soil bodies with different matrixes through each molecule after grinding treatment, the effect can reach deeper soil layers, the blockage is not easy to occur, the redundant urease can be degraded in the soil bodies with time, and the mechanical properties of the slope body under natural conditions are improved under the condition of not damaging the original slope body, so that the damage of small-scale landslide and the like is avoided.
(2) The application combines urease-induced calcium carbonate precipitation technology and fiber, the fiber provides nucleation sites for free urease, so that calcium carbonate crystals are easy to generate, the calcium carbonate and soil particles which are generated by attaching on the surface of the fiber form a fiber-soil particle-calcium carbonate three-dimensional network structure, pores among the soil particles are filled, and the calcium carbonate crystals are bridged at the two ends and the surface part of the fiber to bond the fiber and the soil particles, thereby achieving the purposes of integrally transmitting stress, limiting deformation of a soil body under the action of external force, reducing stress concentration on the surface of a slope body and enhancing the anti-slip capability of the soil body.
(3) The application uses the treated waste concrete blocks as a calcium source, and the generated calcium carbonate crystal comprises the following components: the inside is calcite, the outside is the cyclic aggregate crystal of irregular polyhedron blocks, the surface is concave-convex and staggered, and the calcite and the cyclic aggregate crystal can be mutually attracted in the pores of soil particles to form a compact reticular structure. NH4+ generated in the urease induced calcium carbonate precipitation reaction process enters the inside of the crystal structure of the circulating aggregate to neutralize the permanent negative charge on the surface of the circulating aggregate due to the displacement reaction, so that ions with low electricity price and large radius in soil and structural units are attached to soil particles, and the ions and structural units have certain adsorptivity, thereby strengthening the skeleton group structure of the original molecules, and combining with high-calcium fly ash to promote the formation of hydration gelling substances. Compared with chemical calcium sources, the waste concrete calcium source is cheaper than the chemical calcium source by 1/3, the calcium carbonate generation amount is not obviously different from the most commonly used chemical calcium source-calcium chloride, and the reinforced shear strength and other mechanical properties are not obviously different.
(4) Under the condition that urease catalyzes urea hydrolysis and calcium source solution to generate calcium carbonate, the molecular structure of silicon dioxide and aluminum oxide contained in high-calcium fly ash is destroyed, covalent bonds are broken, a large amount of active unsaturated bonds are combined with calcium ions to generate hydration gelation products, amorphous substances in pore channels are dissolved, the pore channel resistance is reduced, and H+ with small radius can replace cations with large radius, so that the pore diameter is enlarged, the adsorption capacity of the hydration gelation products is improved, the hydration gelation products and fiber-calcium carbonate crystals form a chain structure taking ionic bonds and covalent bonds as main chain force, van der Waals force is auxiliary chain force, and the vector sum of the polarities of bonds in the chain structure compound is larger, so that the larger the intermolecular acting force is, the wind resistance and the strain relaxation amount of the soil body surface can be effectively enhanced.
(5) The high-calcium fly ash is of a porous honeycomb structure and is combined with a urease-induced calcium carbonate precipitation technology, so that the contact angle of water in soil particle holes of a slope body after meeting water can be increased, the negative pressure of the water in the holes is reduced, the porosity of a reinforced soil body is improved, and the problem of low plant survival rate of the soil body caused by high-strength reinforcement is solved.
(6) The shearing strength of the side slope is lower in the initial stage of application, the unstable problem caused by excessive f-CaO in the high-calcium fly ash and the width and the interval of cracks generated on the side slope surface by a urease-induced calcium carbonate precipitation technology can be effectively reduced by adding fibers as reinforcing substances, the unordered arrangement of the fibers can be combined with calcium carbonate crystals to fill the pores of the high-calcium fly ash on one hand, the combination is tighter, the durability of the effect is improved, the formation of CSH gel in the high-calcium fly ash is promoted on the other hand, free water in the adsorbed soil is concentrated in gel pores with the diameter smaller than 10nm in hydration gelation products generated by the high-calcium fly ash, so that capillary pores are improved, a critical pore network connected with each other is refined, and the deformation of the soil caused by water loss is prevented.
(7) The application combines the fiber to effectively utilize the waste concrete blocks and the high-calcium fly ash, can increase the survival rate of vegetation on the side slope, reduces the soil erosion of the side slope, has wide sources of raw materials and simple treatment mode, and can be used for industrial production popularization.
Drawings
FIG. 1 is a graph showing the change of curves of examples and comparative examples in the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and the specific examples. An ecological slope protection implementation method combining urease with fiber and solid waste comprises the following steps:
step 1), removing crushed stone garbage on the surface of a side slope for treatment, digging planting holes at equal intervals, sowing plant seeds into the plant planting holes, and re-covering and leveling soil bodies;
step 2), spreading high-calcium fly ash at plant planting holes, spraying a homogeneous substance of soybean extract, a carbonamide solution, a calcium source solution and fibers mixed in proportion on a slope by using a spraying machine, and repeatedly spraying the homogeneous substance at intervals;
and 3) after the seeds bud, spraying the uniform material on the slope again, and paving a layer of non-woven fabric on the surface for maintenance.
Preferably, in the step 1), the plant seeds are bermuda grass seeds, and the plant seeds are dried in the sun for sowing after being washed by pure water, and the sowing density is 8-12g/m 2 The equal interval between adjacent seeds is 15-20cm, and the distance between adjacent plant planting holes is 15-20cm.
Preferably, the extraction method of the soybean extract in the step 2) comprises the following steps: cleaning soybean with pure water, grinding into soybean powder in a wall breaking machine, sieving with a 200-mesh sieve, mixing the soybean powder with distilled water according to a weight ratio of 1:25, fully stirring for 30 minutes, standing for 6 hours until soybean residue is precipitated, centrifuging soybean solution in a centrifuge at 3000r/min for 15 minutes to obtain soybean extract, and storing at 4 ℃ for later use.
Preferably, the method for obtaining the high-calcium fly ash in the step 2) comprises the following steps: the high-calcium fly ash discharged by buying lignite and subbituminous coal as fuel in a local factory is put into a ball mill for ball milling according to the weight ratio of 0.2 percent of sodium hydroxide to 1.
Preferably, the extraction method of the calcium source solution in the step 2) is as follows: purchasing and dismantling waste concrete blocks from construction engineering of a construction site, crushing the waste concrete blocks by using a grinder, sieving the waste concrete blocks by using a standard geotechnical sieve with the thickness of 1mm, mixing the sieved concrete with hydrochloric acid with the thickness of 2mol/L according to the proportion of 1:2, adding sodium hydroxide solution with the thickness of 1mol/L into the mixed solution to adjust the pH value of the mixed solution to 6.5-7.0, and centrifuging the mixed solution in a centrifuge at the speed of 3000r/m for 15 minutes to extract supernatant as a calcium source solution.
Preferably, the fibers in the step 2) are wood fibers or palm fibers, the fibers are washed by deionized water with the pH=7, then treated by an oiling agent, the weight of the oiling agent and the weight ratio of the fibers are 0.3%, the thickness of the coating is about 100nm, and finally the fibers are cut to about 1.7-2.2cm by scissors and mixed in a homogeneous substance. In the embodiment, the cellulose of the fiber can be increased by washing, the breakage resistance of the fiber can be increased by treating the fiber with the oil solution, and the oil film loss in the mixing process can be ignored because the adhesive force of the fiber surface is stronger, and the oil solution adopts epoxidized soybean oil.
Preferably, the mixing ratio of the soybean extract, the carbon amide solution and the calcium source solution in the step 2) is 1:0.5:0.5, and the spray-seeding fiber dosage is 8-10g/m 2 The spreading amount of the high-calcium fly ash is 600-800g/m 2 。
Preferably, the amounts of the soybean extract, the carbonamide solution and the calcium source solution sprayed onto the slope in each of the steps 2) and 3) are 1.8-2.2L/m, respectively 2 、0.8-1.2L/m 2 And 0.8 to 1.2L/m 2 。
The following examples and comparative examples are provided to illustrate the implementation of the present method and its effects:
the following is a description of specific embodiments:
example 1 (application)
Taking a sample plot of 5m multiplied by 5m from a 1# slope with a slope height of 25m and a slope of 30 degrees of a slope green chemical field of a hydropower station as an example, firstly removing garbage such as broken stone on the slope, secondly digging seed planting holes at intervals of 20cm, sowing the bermuda grass seeds washed by deionized water, and sowing the seeds with a density of 10g/m 2 Step three, firstly, pressing 750g/m on the surface of the sample surface 2 High-calcium fly ash is spread in the content, and a spray planter is used for spraying a homogeneous substance consisting of soybean extract, a carbonamide solution, a calcium source solution and palm fiber at intervals of 3 days, wherein the concentration is 2.0L/m respectively 2 、1.0L/m 2 、1.0L/m 2 And 8g/m 2 After the seeds bud, spraying the homogenized mixture composed of soybean extract, carbon amide solution, calcium source solution and palm fiber on the sample area again, wherein the concentration is 2.0L/m respectively 2 、1.0L/m 2 、1.0L/m 2 And 8g/m 2 And measuring the vegetation coverage, surface shear strength, porosity, organic matters, soil separation capacity and plant number of the bermudagrass seeds per square meter of soil body before each filling.
Comparative example 1 (fly ash without high calcium)
Taking 5m multiplied by 5m sample land on a 2# slope with a slope height of more than 25m and a slope of 30 degrees as an example of a green chemical field of a certain hydropower station slope, removing garbage such as broken stone on the slope, digging seed planting holes at intervals of 20cm, sowing the bermuda grass seeds washed by deionized water, and sowing the seeds with a density of 10g/m 2 Spraying a homogeneous substance composed of soybean extract, carbon amide solution, calcium source solution and palm fiber with concentration of 2.0L/m respectively by using a spraying machine every 3 days 2 、1.0L/m 2 、1.0L/m 2 And 8g/m 2 After the seeds bud, spraying the homogenized mixture composed of soybean extract, carbon amide solution, calcium source solution and palm fiber on the sample area again, wherein the concentration is 2.0L/m respectively 2 、1.0 L/m 2 、1.0L/m 2 And 8g/m 2 . Measuring the vegetation coverage, surface shear strength, porosity, organic matter, and water content of soil before each pouring,Soil segregation capacity, number of bermuda grass seeds per square meter.
Comparative example 2 (concrete-free calcium source solution)
Taking a sample plot of 5m multiplied by 5m from a 1# slope with a slope height of 25m and a slope of 30 degrees of a slope green chemical field of a hydropower station as an example, firstly removing garbage such as broken stone on the slope, secondly digging seed planting holes at intervals of 20cm, sowing the bermuda grass seeds washed by deionized water, and sowing the seeds with a density of 10g/m 2 Step three, firstly, pressing 750g/m on the surface of the sample surface 2 High-calcium fly ash is spread, and a spray planter is used for spraying a homogeneous substance composed of soybean extract, a carbonamide solution and palm fiber every 3 days, wherein the concentration is 2.0L/m respectively 2 、1.0L/m 2 And 8g/m 2 After the seeds bud, spraying the homogenized mixture composed of soybean extract, carbonamide solution and palm fiber again on the sample area with the concentration of 2.0L/m respectively 2 、1.0L/m 2 And 8g/m 2 And measuring the vegetation coverage, surface shear strength, porosity, organic matters, soil separation capacity and plant number of the bermudagrass seeds per square meter of soil body before each filling.
Comparative example 3 (no fiber)
Taking 5m multiplied by 5m sample land on a 4# slope with a slope height of more than 25m and a slope of 30 degrees as an example of a green chemical field of a certain hydropower station slope, removing garbage such as broken stone on the slope, digging seed planting holes at intervals of 20cm, sowing the bermuda grass seeds washed by deionized water, and sowing the seeds with a density of 10g/m 2 Step three, firstly, the sample surface is pressed to 750g/m 2 High-calcium fly ash is spread, and a spray planter is used for spraying a homogeneous substance composed of soybean extract, a carbonamide solution and a calcium source solution at intervals of 3 days, wherein the concentration is 2.0L/m respectively 2 、1.0L/m 2 And 1.0L/m 2 After the seeds bud, spraying the homogenized mixture composed of soybean extract, carbonamide solution and calcium source solution on the sample area again, wherein the concentration is 2.0L/m respectively 2 、1.0L/m 2 And 1.0L/m 2 . And measuring the vegetation coverage, surface shear strength, porosity, organic matters, soil separation capacity and plant number of the bermudagrass seeds per square meter of the soil body before each filling.
Comparative example 4 (blank)
Taking 5m multiplied by 5m sample land on a 3# slope with a slope height of more than 25m and a slope of 30 degrees as an example of a green chemical field of a certain hydropower station slope, removing garbage such as broken stone on the slope, digging seed planting holes at intervals of 20cm, sowing the bermuda grass seeds washed by deionized water, and sowing the seeds with a density of 10g/m 2 Step three, firstly, the sample surface is pressed to 750g/m 2 High-calcium fly ash is spread, and a spray planter is used for spraying a homogeneous substance composed of soybean extract and a carbonamide solution at intervals of 3 days, wherein the concentration is 2.0L/m respectively 2 And 1.0L/m 2 After the seeds bud, spraying a homogeneous substance composed of soybean extract and a carbonamide solution on the sample area again, wherein the concentration is 2.0L/m respectively 2 And 1.0L/m 2 And measuring the vegetation coverage, surface shear strength, porosity, organic matters, soil separation capacity and plant number of the bermudagrass seeds per square meter of soil body before each filling.
The above examples and comparative examples were compared and the data are as follows:
test method and reference standard: calculating the percentage of the ratio of the vertical projection area of the plant community population or the overground part of each individual to the sample area by adopting a sampling needling method; surface shear strength test according to geotechnical test method standard (GB/T50123-1999), adopting a miniature surface cross shear apparatus for measurement; porosity is determined by a density test method according to the geotechnical test method standard (GB/T50123-1999); the organic matter is measured by a flow analyzer; and the soil separation capacity is obtained by calculating the quality difference before and after the soil separation capacity is measured by a scouring test after sampling by a ring cutter method.
From the comparison data, the vegetation cover of the example is improved by 2.62 times, the shear strength of the soil surface is increased by 12kPa, the porosity is reduced by 12.2%, the content of organic matters in the soil is improved by about 3 times at maximum, the index of soil separation capacity representing the soil impact resistance is reduced by 9.74 times, the smaller the soil separation capacity represents the better the soil impact resistance, and the plant number of the bermuda grass per square meter is also greatly increased compared with that of the control group. The ecological slope protection implementation method of the urease synergistic fiber combined solid waste is described, the performances of the soil body such as the scouring resistance and the shear strength can be obviously improved, the improvement of the organic matter content provides an excellent environment for better growth of vegetation on the slope, the existence of the vegetation enhances the protection effect on the slope, and the root-soil complex formed by plant root systems and the soil body obviously improves the surface erosion resistance, the erosion resistance and the rain erosion resistance of the slope.
The above embodiments are merely preferred embodiments of the present application, and should not be construed as limiting the present application, and the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without collision. The protection scope of the present application is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this application are also within the scope of the application.
Claims (5)
1. An ecological slope protection implementation method combining urease with fiber and solid waste is characterized in that: it comprises the following steps:
step 1), removing broken stone garbage on the surface of a side slope, digging plant planting holes at equal intervals, sowing plant seeds into the plant planting holes, and re-covering and leveling soil bodies;
step 2), spreading high-calcium fly ash at plant planting holes, spraying a homogeneous substance of soybean extract, a carbonamide solution, a calcium source solution and fibers mixed in proportion on a slope by using a spraying machine, and repeatedly spraying the homogeneous substance at intervals;
step 3), after the seeds bud, spraying the homogeneous substance on the slope again, and paving a layer of non-woven fabric on the surface for maintenance;
the extraction method of the soybean extract in the step 2) comprises the following steps: cleaning soybean with pure water, grinding into soybean powder in a wall breaking machine, sieving with a 200-mesh sieve, mixing the soybean powder with distilled water according to a weight ratio of 1:25, fully stirring for 30 minutes, standing for 6 hours until soybean residue is precipitated, centrifuging the soybean solution in a centrifuge at 3000r/min for 15 minutes to obtain soybean extract, and storing at 4 ℃ for later use;
the method for obtaining the high-calcium fly ash in the step 2) comprises the following steps: purchasing lignite and subbituminous coal as fuel in a local factory to discharge high-calcium fly ash, and putting sodium hydroxide and the high-calcium fly ash into a ball mill for ball milling according to the weight ratio of 0.2 percent to 1;
the extraction method of the calcium source solution in the step 2) comprises the following steps: purchasing and dismantling waste concrete blocks from construction engineering of a construction site, crushing the waste concrete blocks by using a grinder, sieving the waste concrete blocks by using a standard geotechnical sieve of 1mm, mixing the sieved concrete with 2mol/L hydrochloric acid according to a ratio of 1:2, adding 1mol/L sodium hydroxide solution into the mixed solution to adjust the pH value of the mixed solution to 6.5-7.0, putting the mixed solution into a centrifuge, centrifuging the mixed solution at a speed of 3000r/min for 15 minutes, and extracting supernatant to obtain a calcium source solution.
2. The method for implementing ecological slope protection by combining urease and fiber with solid waste according to claim 1, wherein the method comprises the following steps: in the step 1), the plant seeds are bermuda grass seeds, and are dried in the sun for sowing after being washed by pure water, and the sowing density is 8-12g/m 2 The equal interval between adjacent seeds is 15-20cm, and the distance between adjacent plant planting holes is 15-20cm.
3. The method for implementing ecological slope protection by combining urease and fiber with solid waste according to claim 1, wherein the method comprises the following steps: the fiber in the step 2) is selected from wood fiber or palm fiber, the fiber is firstly washed by deionized water with pH=7, then is treated by oiling agent, the weight of the oiling agent coating and the weight ratio of the fiber are 0.3%, the thickness of the coating oiling agent coating is 100nm, and finally, the fiber is cut to 1.7-2.2cm by scissors and is mixed in a homogeneous substance.
4. The method for implementing ecological slope protection by combining urease and fiber with solid waste according to claim 1, wherein the method comprises the following steps: the mixing ratio of the soybean extract, the carbon amide solution and the calcium source solution in the step 2) is 1:0.5:0.5, and the spray-seeding fiber dosage is 8-10g/m 2 The spreading amount of the high-calcium fly ash is 600-800g/m 2 。
5. The method for implementing ecological slope protection by combining urease and fiber with solid waste according to claim 1, wherein the method comprises the following steps: the amounts of the soybean extract, the carbonamide solution and the calcium source solution sprayed on the slope surface in the step 2) and the step 3) are respectively 1.8-2.2L/m 2 、0.8-1.2 L/m 2 And 0.8-1.2L/m 2 。
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| JP2004305186A (en) * | 2003-04-02 | 2004-11-04 | Ryoji Tatewana | Method for collecting bacteria/microorganism living in soil and use of the same for tree planting, feed and soil improvement |
| CN103966126A (en) * | 2014-04-25 | 2014-08-06 | 北京山地生态科技研究所 | Bacillus subtilis, microbial agent and application of bacillus subtilis and microbial agent in ecological restoration |
| CN111837528A (en) * | 2020-08-14 | 2020-10-30 | 南京林业大学 | Bare rock spray-seeding green-recovering structure and construction method |
| CN113316989A (en) * | 2021-06-01 | 2021-08-31 | 三峡大学 | Method for realizing slope greening by combining vegetation concrete with self-growing azotobacter |
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2022
- 2022-08-17 CN CN202210988743.9A patent/CN115492076B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004305186A (en) * | 2003-04-02 | 2004-11-04 | Ryoji Tatewana | Method for collecting bacteria/microorganism living in soil and use of the same for tree planting, feed and soil improvement |
| CN103966126A (en) * | 2014-04-25 | 2014-08-06 | 北京山地生态科技研究所 | Bacillus subtilis, microbial agent and application of bacillus subtilis and microbial agent in ecological restoration |
| CN111837528A (en) * | 2020-08-14 | 2020-10-30 | 南京林业大学 | Bare rock spray-seeding green-recovering structure and construction method |
| CN113316989A (en) * | 2021-06-01 | 2021-08-31 | 三峡大学 | Method for realizing slope greening by combining vegetation concrete with self-growing azotobacter |
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