CN111837528A - Bare rock spray-seeding green-recovering structure and construction method - Google Patents
Bare rock spray-seeding green-recovering structure and construction method Download PDFInfo
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- CN111837528A CN111837528A CN202010822703.8A CN202010822703A CN111837528A CN 111837528 A CN111837528 A CN 111837528A CN 202010822703 A CN202010822703 A CN 202010822703A CN 111837528 A CN111837528 A CN 111837528A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/085—Broadcast seeders
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
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Abstract
A bare rock spray-seeding and re-greening structure is sequentially composed of bedrock 1, a microorganism coarsening and fiber planting layer 2, a planting soil layer 3 and a seeding layer 4 from inside to outside, and the construction method mainly comprises the following steps: mixing coarse sand, fiber and urease bacterial liquid to prepare microbial roughening plant fiber mixture, and adding CaCl into the microbial roughening plant fiber mixture2And urea, spraying the urea on the bedrock 1 after uniformly stirring to prepare a microorganism coarsening plant fiber layer, mixing the plant soil, the fibers and urease bacterial liquid, standing for 1h after uniformly stirring, and adding CaCl2、CaSO4·2H2O and urea to prepare a microorganism planting soil mixture, spraying the microorganism roughening planting fiber layer 2 to prepare a planting soil layer 3, adding grass seeds into the microorganism planting soil mixture, uniformly stirring, spraying the mixture on the planting soil layer 3 to prepare a seeding layer 4, shading, covering and maintaining to finish the repeated curingAnd (4) green.
Description
Technical Field
The invention relates to a spray seeding and greening structure of an exposed rocky slope and a construction method, and belongs to the field of slope protection and water and soil conservation.
Background
A large amount of excavation projects are inevitably generated in engineering construction activities such as highway and railway construction, mine exploitation and the like in mountainous areas, a large amount of exposed rock slopes are formed, the appearance is not attractive, and adverse effects are caused on ecological environments such as water and soil conservation and the like. Self-greening of high and steep bare rock slopes is very difficult due to lack of soil matrix. The roughness of the slope surface of the high and steep bare rock slope is low, the adhesion is poor, the soil body is easy to slip or peel under the action of gravity after the conventional soil dressing spray-seeding technology is used for spray-seeding, and the spray-seeding effect is not ideal.
Technical scheme of prior art I
The vegetation concrete technology is that after the slope is cleaned and leveled, cementing materials, grass seeds, vegetation soil and organic humus are mixed into concrete according to a certain proportion, and then the concrete is sprayed on the exposed rock slope surface by utilizing a spray seeding technology to form a greening base layer with certain strength and attached to the slope surface, so as to realize greening and erosion resistance of the slope surface.
Disadvantages of the first prior art
The vegetation concrete technology needs a large amount of artificial chemical cementing materials, has environmental residue, and meanwhile, the ecological concrete can also obstruct the ecological microenvironment circulation of bedrock slopes and sloping surfaces, and has adverse effects on the ecological environment and sustainable development.
Technical scheme of prior art II
The alien soil spray seeding technology is that alien soil, fiber, water retention agent, compound fertilizer and the like are mixed according to a certain proportion, added into a spray seeding machine, mixed and stirred, and sprayed to a slope surface through the spray seeding machine to form a growing environment required by plants, and the stability of the slope can be increased to a certain extent after the plants grow.
The second prior art has the defects
For a high and steep rocky slope, due to the fact that the roughness of the slope surface is low, a spray-seeding layer after foreign soil is sprayed and sown partially slips or peels off under the action of gravity, and the plant covering effect after the spray-seeding is poor.
Technical scheme of prior art III
The three-dimensional vegetation net slope protection is a technology for constructing a protection system with self-growing capacity on a slope surface by combining geosynthetic materials with active plants and reinforcing the slope through the growth of the plants.
Disadvantages of the third prior art
The existing three-dimensional vegetation net is mostly processed by taking thermoplastic resin as a raw material, the performance of the plastic is reduced after aging, the plastic is difficult to completely and naturally degrade, and pollution residues are easy to form in slope soil.
Technical scheme of prior art four
The net hanging spray-seeding method is characterized in that a rock surface net hanging is used as a carrier, base materials such as foreign soil, organic matters, adhesives and fertilizers and seeds are fully mixed, and the mixture is uniformly sprayed to a slope surface through a spray-seeding machine to form a soil layer with a certain thickness standard so as to create a growth environment required by plants, so that the plants naturally grow to cover the slope surface, and the purposes of greening the slope surface and fixing soil and protecting the slope are achieved.
Disadvantages of the prior art
The shear strength between the soil layer and the rock surface formed by the net hanging spray-seeding method is low, the stripping resistance between the net hanging and the rock surface is weak, and particularly for a high-steep and smooth rock surface after long-term exposure and weathering, the condition that the spray-seeding soil layer is separated from or slides on the rock surface at a local fluctuating part even if the net hanging is adopted, so that the green restoration effect is not ideal.
Disclosure of Invention
The invention relates to a structure for realizing spray seeding and re-greening of bare rock by utilizing microbial induced mineralization reaction and a construction method thereof.
The principle of the invention is as follows: inducing the mineralization of carbonate by microorganisms to mix urease bacterial liquid, sand, urea, fiber and CaCl2Spraying the mixture on the slope of bare rock, hydrolyzing urea into urea with urease bacteria
And
easily soluble salt CaCl2Dissolved Ca2+And
fast bonding of CaCO generated at the sand grain-bed face contact3Crystallizing, adhering sand particles to the rock slope to form CaCO3The sand particles are cemented together by crystallization, so that the rock surface roughness is greatly increased; while Ca2+And
crystallizing and gathering the doped fiber surface, increasing the bond strength of the fiber, planting the fiber root on the rock surface through mutually cemented sand particles, making a microorganism coarsening fiber planting layer on the slope surface and firmly attaching the microorganism coarsening fiber planting layer on the surface of the bedrock, solidifying one end of part of the fiber in the microorganism coarsening fiber planting layer between sand grains, exposing the other end outside, and reserving interlayer planting bars for a planting soil layer covered on the microorganism coarsening fiber planting layer subsequently. Planting soil, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2And spraying the O mixture on the microbial coarsening plant fiber layer to prepare a plant soil layer. Planting soil, urease bacterial liquid, urea, fiber and CaSO4·2H2Adding grass seeds into the mixture O, spraying the mixture O on a planting soil layer to form a seeding layer, and using soluble salt CaCl with a specific ratio in the construction process of the planting soil layer and the seeding layer2Quickly dissolve out a small amount of Ca2+The soil layer is formed without affecting the initial strength of grass seed germination, and CaSO is used4·2H2O is a sparingly soluble calcium salt, which can convert Ca2+Slowly releasing, reducing the mineralizing and cementing speed of microbes, slowly hardening the planting soil according to the growth rule of grass seed germination and seedling breaking, increasing the rate of emergence on slope, and continuously generating CaCO on fiber3CaCO crystallized, attached to fibres3The crystallization can better anchor the fiber between each structural layer, and especially the calcium carbonate controlling the low-speed crystallization can obviously improve the bonding strength of each structural layer. Produced after urea hydrolysis by urease bacteria in planting soil layer and seeding layer
As a starting material for the mineralization of crystalline calcium carbonate by microorganisms
The fertilizer and the nutrient are provided for the germination and the growth of the grass seeds in the slope, the material is fully utilized, and the emission of harmful ammonia gas as a byproduct of the induced mineralization of the microorganism is reduced.
A bare rock spray-seeding and re-greening structure is characterized by comprising bedrock 1, a microorganism coarsening and fiber planting layer 2, a planting soil layer 3 and a seeding layer 4 from inside to outside in sequence.
The bare rock spray-seeding and re-greening structure is characterized in that the microorganism coarsening and fiber planting layer 2 is formed by sand, urease bacterial liquid, urea, fiber and CaCl2The mixture is prepared by spray-seeding, and the thickness of the mixture is 0.5-1 cm; the planting soil layer 3 is prepared from planting soil, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2The mixture of O is prepared by spray-seeding, and the thickness is 6-9 cm; the seeding layer 4 is made of planting soil, grass seeds, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2And spraying and seeding the mixture of O, wherein the thickness of the mixture is 2-4 cm.
The bare rock spray-seeding greening structure is characterized in that calcium carbonate generated by microbial mineralization is bonded between the bedrock 1 and the microbial coarsening fiber planting layer 2.
The bare rock spray-seeding green-recovering structure is characterized in that the microorganism coarsening fiber planting layer 2 and the planting soil layer 3 are bonded together through fibers and calcium carbonate generated by microorganism mineralization.
A construction method of a bare rock spray-seeding green-recovering structure is characterized by comprising the following steps:
a. mixing the coarse sand, the fiber and the urease bacterial liquid, wherein the weight ratio of the coarse sand to the fiber to the urease bacterial liquid is 1: 0.2-0.5: 0.3-0.5, and the concentration of the urease bacterial liquid is OD6001.0-2.0, uniformly mixing, and standing for 1h to prepare a microorganism coarsening and planting fiber mixture;
b. adding CaCl into the mixture of plant fiber for microorganism coarsening2And urea, wherein the microorganism is coarsened and the plant fiber mixture, CaCl2The weight ratio of the urea to the urea is 1: 0.1-0.3, the urea and the urea are uniformly stirred and sprayedSowing the mixture on a bed rock 1, wherein the spraying thickness is 0.5-1 cm, and preparing a microorganism coarsening plant fiber layer 2;
c. mixing the planting soil, the fibers and the urease bacterial liquid, wherein the weight ratio of the planting soil, the fibers and the urease bacterial liquid is 1: 0.3-0.5, and the concentration of the urease bacterial liquid is OD6001.0-2.0, uniformly mixing, standing for 1h, and adding CaCl2、CaSO4·2H2O and urea, planting soil and CaCl2、CaSO4·2H2The weight ratio of the O to the urea is 1: 0.05-0.1: 0.15-0.3: 0.2-0.4, and the mixture is uniformly stirred to prepare a microorganism planting soil mixture;
d. spraying the microorganism planting soil mixture on the microorganism coarsening and planting fiber layer 2, wherein the spraying thickness is 6-9 cm, and a planting soil layer 3 is prepared;
e. adding grass seeds into the microbial planting soil mixture prepared in the step c, uniformly stirring, and then spraying and sowing on the planting soil structure layer 3, wherein the spraying and sowing thickness is 2-4 cm, so as to prepare a sowing structure layer 4;
f. covering and maintaining the mixture in a shady place to finish the greening.
The invention has the beneficial effects that: the microorganism coarsening fiber planting layer can obviously increase the roughness and the cohesive force of the surface of bare rock, strengthen the connection and the integrity between the spray seeding layers, effectively prevent the spray seeding layers from peeling off, and particularly can obviously improve the greening effect on the rough steep slope rock surface; secondly, the microorganism mineralization is utilized to convert the urea into the cementing material to play a cementing role, and the microorganism mineralization is utilized to decompose the by-product of the urea
The germination and growth of the green-recovering plants are promoted, the use of the materials is made the best, the material utilization rate is obviously improved, and the residue and the emission of harmful byproducts are reduced; and thirdly, the strength of the spray seeding layer is increased to match the emergence period of the green-recovering plants, the fertility is continuous, and the slope emergence rate is high.
Drawings
FIG. 1 is a schematic view of a bare rock spray-seeding green-recovering structure;
reference numerals: 1-bedrock, 2-microorganism coarsening and planting fiber layer, 3-planting soil layer, 4-seeding layer, 5-slope herbaceous plant, 6-fiber and 7-sand particle.
Detailed Description
Example 1
In the embodiment, the side slope is a limestone bare rock side slope, the slope is 45 degrees, the height is 20m, and the bare rock spray seeding and green recovering structure is characterized by comprising bedrock 1, a microorganism coarsening and planting fiber layer 2, a planting soil layer 3 and a seeding layer 4 from inside to outside in sequence.
The bare rock spray-seeding and re-greening structure is characterized in that the microorganism coarsening and fiber planting layer 2 is formed by sand, urease bacterial liquid, urea, fiber and CaCl2The mixture is prepared by spray-seeding, and the thickness is 0.5 cm; the planting soil layer 3 is prepared from planting soil, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2The mixture of O is prepared by spray-seeding, and the thickness is 6 cm; the seeding layer 4 is made of planting soil, grass seeds, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2The mixture of O is prepared by spray-seeding, and the thickness is 4 cm.
The bare rock spray-seeding greening structure is characterized in that calcium carbonate generated by microbial mineralization is bonded between the bedrock 1 and the microbial coarsening fiber planting layer 2.
The bare rock spray-seeding green-recovering structure is characterized in that the microorganism coarsening fiber planting layer 2 and the planting soil layer 3 are bonded together through fibers and calcium carbonate generated by microorganism mineralization.
A construction method of a bare rock spray-seeding green-recovering structure is characterized by comprising the following steps:
a. mixing the coarse sand, the fiber and the urease bacterial liquid, wherein the weight ratio of the coarse sand to the fiber to the urease bacterial liquid is 1: 0.2: 0.5, and the concentration of the urease bacterial liquid is OD6001.0, standing for 1h after uniformly mixing to prepare a microorganism coarsening plant fiber mixture;
b. adding CaCl into the mixture of plant fiber for microorganism coarsening2And urea, wherein the microorganism is coarsened and the plant fiber mixture, CaCl2The weight ratio of the urea to the water is 1: 0.1: 0.3, the water and the urea are sprayed on the bedrock 1 after being evenly stirred, the spraying thickness is 0.5cm, and the microorganism coarsening plant fiber layer 2 is prepared;
c. mixing the planting soil, the fibers and the urease bacterial liquid, wherein the weight ratio of the planting soil, the fibers and the urease bacterial liquid is 1: 0.3: 0.5, and the concentration of the urease bacterial liquid is OD600Mixing completely with 1.0, standing for 1 hr, adding CaCl2、CaSO4·2H2O and urea, planting soil and CaCl2、CaSO4·2H2The weight ratio of the O to the urea is 1: 0.05: 0.15: 0.2, and the mixture is uniformly stirred to prepare a microorganism planting soil mixture;
d. spraying the mixture of the microorganism planting soil on the microorganism coarsening and planting fiber layer 2, wherein the spraying thickness is 6cm, and preparing a planting soil layer 3;
e. adding grass seeds into the microbial planting soil mixture prepared in the step c, uniformly stirring, and then spraying and sowing on the planting soil structure layer 3, wherein the spraying and sowing thickness is 4cm, so as to prepare a sowing structure layer 4;
f. covering and maintaining the mixture in a shady place to finish the greening.
Example 2
In the embodiment, the side slope is an Enhan rock bare rock side slope, the slope is 55 degrees, the height is 35m, and the bare rock spray seeding green restoration structure is characterized by comprising a bedrock 1, a microorganism coarsening and planting fiber layer 2, a planting soil layer 3 and a seeding layer 4 from inside to outside in sequence.
The bare rock spray-seeding and re-greening structure is characterized in that the microorganism coarsening and fiber planting layer 2 is formed by sand, urease bacterial liquid, urea, fiber and CaCl2The mixture is prepared by spray-seeding, and the thickness is 0.75 cm; the planting soil layer 3 is prepared from planting soil, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2The mixture of O is prepared by spray-seeding, and the thickness is 7.5 cm; the seeding layer 4 is made of planting soil, grass seeds, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2The mixture of O is prepared by spray-seeding, and the thickness is 3 cm.
The bare rock spray-seeding greening structure is characterized in that calcium carbonate generated by microbial mineralization is bonded between the bedrock 1 and the microbial coarsening fiber planting layer 2.
The bare rock spray-seeding green-recovering structure is characterized in that the microorganism coarsening fiber planting layer 2 and the planting soil layer 3 are bonded together through fibers and calcium carbonate generated by microorganism mineralization.
A construction method of a bare rock spray-seeding green-recovering structure is characterized by comprising the following steps:
a. mixing the coarse sand, the fiber and the urease bacterial liquid, wherein the weight ratio of the coarse sand to the fiber to the urease bacterial liquid is 1: 0.3: 0.4, and the concentration of the urease bacterial liquid is OD6001.5, standing for 1h after uniformly mixing to prepare a microorganism coarsening plant fiber mixture;
b. adding CaCl into the mixture of plant fiber for microorganism coarsening2And urea, wherein the microorganism is coarsened and the plant fiber mixture, CaCl2The weight ratio of the urea to the plant fiber layer is 1: 0.2, the plant fiber layer and the urea are sprayed on the bedrock 1 after being evenly stirred, the spraying thickness is 0.75cm, and the microorganism coarsening plant fiber layer 2 is prepared;
c. mixing the planting soil, the fibers and the urease bacterial liquid, wherein the weight ratio of the planting soil, the fibers and the urease bacterial liquid is 1: 0.4, and the concentration of the urease bacterial liquid is OD600Mixing completely with 1.5, standing for 1 hr, adding CaCl2、CaSO4·2H2O and urea, planting soil and CaCl2、CaSO4·2H2The weight ratio of the O to the urea is 1: 0.075: 0.225: 0.3, and the mixture is evenly stirred to prepare a microorganism planting soil mixture;
d. spraying the mixture of the microorganism planting soil on the microorganism coarsening planting fiber layer 2, wherein the spraying thickness is 7.5cm, and preparing a planting soil layer 3;
e. adding grass seeds into the microbial planting soil mixture prepared in the step c, uniformly stirring, and then spraying and sowing on the planting soil structure layer 3, wherein the spraying and sowing thickness is 3cm, so as to prepare a sowing structure layer 4;
f. covering and maintaining the mixture in a shady place to finish the greening.
Example 3
In the example, the side slope is a granite bare rock side slope with the slope of 60 degrees and the height of 28m, and the bare rock spray-seeding green-recovering structure is characterized by comprising bedrock 1, a microorganism coarsening and planting fiber layer 2, a planting soil layer 3 and a seeding layer 4 from inside to outside in sequence.
The bare rock spray-seeding green-recovering structure is characterized in thatThe microorganism coarsening and fiber planting layer 2 is made of sand, urease bacterial liquid, urea, fiber and CaCl2The mixture is prepared by spray-seeding, and the thickness is 1 cm; the planting soil layer 3 is prepared from planting soil, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2The mixture of O is prepared by spray-seeding, and the thickness is 9 cm; the seeding layer 4 is made of planting soil, grass seeds, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2The mixture of O is prepared by spray-seeding, and the thickness is 2 cm.
The bare rock spray-seeding greening structure is characterized in that calcium carbonate generated by microbial mineralization is bonded between the bedrock 1 and the microbial coarsening fiber planting layer 2.
The bare rock spray-seeding green-recovering structure is characterized in that the microorganism coarsening fiber planting layer 2 and the planting soil layer 3 are bonded together through fibers and calcium carbonate generated by microorganism mineralization.
A construction method of a bare rock spray-seeding green-recovering structure is characterized by comprising the following steps:
a. mixing the coarse sand, the fiber and the urease bacterial liquid, wherein the weight ratio of the coarse sand to the fiber to the urease bacterial liquid is 1: 0.5: 0.3, and the concentration of the urease bacterial liquid is OD600Standing for 1h after uniformly mixing the components 2.0 to prepare a microorganism coarsening plant fiber mixture;
b. adding CaCl into the mixture of plant fiber for microorganism coarsening2And urea, wherein the microorganism is coarsened and the plant fiber mixture, CaCl2The weight ratio of the urea to the water is 1: 0.3: 0.1, the water and the urea are sprayed on the bedrock 1 after being evenly stirred, the spraying thickness is 1cm, and a microorganism coarsening plant fiber layer 2 is prepared;
c. mixing the planting soil, the fibers and the urease bacterial liquid, wherein the weight ratio of the planting soil, the fibers and the urease bacterial liquid is 1: 0.5: 0.3, and the concentration of the urease bacterial liquid is OD600Standing for 1h after mixing uniformly, adding CaCl2、CaSO4·2H2O and urea, planting soil and CaCl2、CaSO4·2H2The weight ratio of the O to the urea is 1: 0.1: 0.3: 0.4, and the mixture is uniformly stirred to prepare a microorganism planting soil mixture;
d. spraying the mixture of the microorganism planting soil on the microorganism coarsening and planting fiber layer 2, wherein the spraying thickness is 9cm, and preparing a planting soil layer 3;
e. c, adding grass seeds into the microbial planting soil mixture prepared in the step c, uniformly stirring, and then spraying and sowing on the planting soil structure layer 3, wherein the spraying and sowing thickness is 2cm, so as to prepare a sowing structure layer 4;
f. covering and maintaining the mixture in a shady place to finish the greening.
Claims (5)
1. A bare rock spray-seeding and re-greening structure is characterized by being sequentially composed of bedrock (1), a microorganism coarsening and fiber planting layer (2), a planting soil layer (3) and a seeding layer (4) from inside to outside.
2. The spray-seeding and re-greening structure for bare rock as claimed in claim 1, wherein said microorganism-roughening and fiber-planting layer (2) is made of sand, urease solution, urea, fiber and CaCl2The mixture is prepared by spray-seeding, and the thickness of the mixture is 0.5-1 cm; the planting soil layer (3) is composed of planting soil, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2The mixture of O is prepared by spray-seeding, and the thickness is 6-9 cm; the seeding layer (4) is composed of planting soil, grass seeds, urease bacterial liquid, urea, fiber and CaCl2And CaSO4·2H2And spraying and seeding the mixture of O, wherein the thickness of the mixture is 2-4 cm.
3. A bare rock spray-seeding and re-greening structure as claimed in claim 1, wherein said bedrock (1) is bonded to said microbial-coarsened fiber-planting layer (2) by calcium carbonate produced by microbial mineralization.
4. A bare rock spray-seeding and re-greening structure as claimed in claim 1, wherein said microbial-roughening planted fiber layer (2) and planted soil layer (3) are bonded together by fiber and calcium carbonate produced by microbial mineralization.
5. A construction method of a bare rock spray-seeding green-recovering structure is characterized by comprising the following steps:
a. mixing coarse sand, fiber and urease bacterial liquid, andthe weight ratio of the medium coarse sand to the fiber to the urease bacterial liquid is 1: 0.2-0.5: 0.3-0.5, and the concentration of the urease bacterial liquid is OD6001.0-2.0, uniformly mixing, and standing for 1h to prepare a microorganism coarsening and planting fiber mixture;
b. adding CaCl into the mixture of plant fiber for microorganism coarsening2And urea, wherein the microorganism is coarsened and the plant fiber mixture, CaCl2The weight ratio of the urea to the urea is 1: 0.1-0.3, the urea is sprayed on the bedrock (1) after being uniformly stirred, and the spraying thickness is 0.5-1 cm, so that a microorganism roughening and fiber planting layer (2) is prepared;
c. mixing the planting soil, the fibers and the urease bacterial liquid, wherein the weight ratio of the planting soil, the fibers and the urease bacterial liquid is 1: 0.3-0.5, and the concentration of the urease bacterial liquid is OD6001.0-2.0, uniformly mixing, standing for 1h, and adding CaCl2、CaSO4·2H2O and urea, planting soil and CaCl2、CaSO4·2H2The weight ratio of the O to the urea is 1: 0.05-0.1: 0.15-0.3: 0.2-0.4, and the mixture is uniformly stirred to prepare a microorganism planting soil mixture;
d. spraying the microorganism planting soil mixture on the microorganism coarsening planting fiber layer (2) to form a planting soil layer (3) with the spraying thickness of 6-9 cm;
e. adding grass seeds into the microbial planting soil mixture prepared in the step c, uniformly stirring, and then spraying and sowing on the planting soil structure layer (3) to obtain a sowing structure layer (4) with the spraying and sowing thickness of 2-4 cm;
f. covering and maintaining the mixture in a shady place to finish the greening.
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| CN115382640A (en) * | 2022-09-05 | 2022-11-25 | 三峡大学 | Clothes fiber treatment device for slope ecological restoration and slope ecological restoration method |
| CN115492076A (en) * | 2022-08-17 | 2022-12-20 | 三峡大学 | Method for implementing ecological slope protection by combining urease with fiber and solid waste |
| CN116217142A (en) * | 2023-01-07 | 2023-06-06 | 南通市建设混凝土有限公司 | Anti-cracking concrete and preparation process thereof |
| CN116283108A (en) * | 2023-04-14 | 2023-06-23 | 盐城市福奇混凝土有限公司 | Fly ash permeable concrete and preparation method thereof |
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