CN114790751B - Fruit and mud composite ecological slope protection structure and construction method thereof - Google Patents
Fruit and mud composite ecological slope protection structure and construction method thereof Download PDFInfo
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- CN114790751B CN114790751B CN202210533237.0A CN202210533237A CN114790751B CN 114790751 B CN114790751 B CN 114790751B CN 202210533237 A CN202210533237 A CN 202210533237A CN 114790751 B CN114790751 B CN 114790751B
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- 235000013399 edible fruits Nutrition 0.000 title claims abstract description 99
- 238000010276 construction Methods 0.000 title claims abstract description 35
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- 239000004568 cement Substances 0.000 claims abstract description 377
- 239000002689 soil Substances 0.000 claims abstract description 326
- 239000011241 protective layer Substances 0.000 claims abstract description 148
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 80
- 239000010410 layer Substances 0.000 claims abstract description 80
- 238000005507 spraying Methods 0.000 claims abstract description 57
- 239000003337 fertilizer Substances 0.000 claims abstract description 44
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000001580 bacterial effect Effects 0.000 claims abstract description 26
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 235000010855 food raising agent Nutrition 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 239000002023 wood Substances 0.000 claims description 46
- 239000004927 clay Substances 0.000 claims description 24
- 239000010902 straw Substances 0.000 claims description 24
- 241000196324 Embryophyta Species 0.000 claims description 23
- 239000007858 starting material Substances 0.000 claims description 23
- 238000004140 cleaning Methods 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 21
- 239000007921 spray Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 244000052363 Cynodon dactylon Species 0.000 claims description 13
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- 239000004745 nonwoven fabric Substances 0.000 claims description 12
- 238000005303 weighing Methods 0.000 claims description 12
- 239000011398 Portland cement Substances 0.000 claims description 7
- 150000001805 chlorine compounds Chemical group 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 6
- 235000004936 Bromus mango Nutrition 0.000 claims description 6
- 241001112695 Clostridiales Species 0.000 claims description 6
- 235000014826 Mangifera indica Nutrition 0.000 claims description 6
- 235000009184 Spondias indica Nutrition 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 6
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- 239000003895 organic fertilizer Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
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- 241000209082 Lolium Species 0.000 claims description 3
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Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
-
- 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
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
-
- 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
-
- 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
-
- 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
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Botany (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a fruit and mud compound ecological slope protection structure and a construction method thereof, the structure comprises a plurality of anchor rods buried in a side slope, a reinforcing steel bar net paved along the slope surface of the side slope and fixed with the anchor rods, and a plurality of cushion blocks are arranged between the slope surface and the reinforcing steel bar net and used for supporting the reinforcing steel bar net; the slope surface is sequentially covered with a first cement soil protective layer and a second cement soil protective layer; the biological bacterial fertilizer leavening agent is mixed in the cement soil sprayed by the first cement soil protective layer, namely, the rotten fruits are sprayed after the cement soil is sprayed and are embedded into the first cement soil protective layer; seeds and biological substrates are mixed in the cement soil sprayed by the second cement soil protective layer. Spraying the fruits to be rotted after spraying the cement soil for the first time, forming embedded communication pores by utilizing the fruits easy to rot and the biological bacterial fertilizer fermenting agent for plant growth and water storage, and embedding the second layer of cement soil into the pores formed by the decay of the fruits and providing a certain biting force for the second layer of cement soil. Playing a role in reinforcing the steep slope.
Description
Technical Field
The invention belongs to the technical field of high-steep slope protection, and particularly relates to a fruit and mud compound ecological slope protection structure and a construction method thereof.
Background
With the continuous development of the economy in China, the scale of domestic energy engineering, traffic engineering, mine engineering and hydraulic engineering is rapidly expanded, each large mine, tunnel and dam can form a high and steep side slope in the construction process, the slope gradient of the high and steep side slope is generally 45-90 degrees, the defects of large gradient and poor conditions of the high and steep side slope easily cause water and soil loss, so that the method is no longer suitable for vegetation growth, the side slope surface is free from vegetation coverage and is covered with rock fragments, natural disasters such as landslide and the like are easily caused after rainfall, and the life safety and property safety of people can be influenced even in serious cases.
At present, the methods for treating the high and steep slopes at home and abroad mostly adopt the techniques of soil-dressing spray seeding, plant growth blanket, vegetation concrete and the like, but the techniques have some defects. For example, although the soil spraying can form porous stable soil knots with certain thickness, rain resistance, wind erosion resistance, firmness and ventilation and similar or better than natural surface soil, the slope of a high and steep slope is generally 45-90 degrees, the slope is large, the spraying surface layer can be scoured and lost under strong rainfall, and the treatment time is short; the plant growth blanket is applied to provide a suitable environment for plant growth so as to break through the bottleneck that plant growth is difficult to realize on a high-steep slope (a slope vegetation recovery structure and a high-steep and poor slope reconstruction method using the same, application number: 202010319529.5), the condition is suitable for plant growth, but the firmness degree between the applied plant growth blanket and the high-steep slope is poor, the slope strength and durability cannot meet the slope protection requirement, meanwhile, the influence of factors such as water retention property and rainfall of the slope are not considered, under the rainfall condition, rainwater can scour the slope to damage the slope, and meanwhile, the softening effect of the slope can cause the strength reduction of the soil body due to rainfall infiltration, so that the slope collapses; although the firmness of the slope body can be improved by taking the concrete as the cementing agent, the water retention of the slope is enhanced (the high-steep slope vegetation concrete slope protection greening system. Application number: 201720386815.7), the soil hardening is easy to cause due to the property of the concrete, the surface of the concrete is not suitable for plant growth, and the necessary conditions for plant growth such as enough air, water and the like are not available in the concrete base material, so that the germination rate and the survival rate of plant seeds in the concrete base material are low. In general, the effect of the prior ecological slope protection treatment method and measure is still to be further improved.
Disclosure of Invention
In order to solve the technical problems that a high and steep slope is easy to slide under the condition of flushing by rainwater, the ecological treatment effect of the high and steep slope is poor and the treatment time is short in the prior art, the invention aims to provide a fruit and mud composite ecological slope protection structure.
The invention further aims to provide a construction method of the fruit and mud composite ecological slope protection structure, which has the advantages of simple structure, convenient construction, reduced construction cost, fewer working procedures, shorter construction period, no need of prefabricated components for construction, less processing time, high cost performance and capability of performing maintenance on the first layer of cement soil and the second layer of cement soil only in seven days.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the fruit and mud compound ecological slope protection structure comprises a plurality of anchor rods buried in a side slope, a reinforcing steel bar net paved along the slope surface of the side slope and fixed with the anchor rods, and a plurality of cushion blocks used for supporting the reinforcing steel bar net are arranged between the slope surface and the reinforcing steel bar net;
the slope surface is sequentially covered with a first cement soil protective layer and a second cement soil protective layer, and the anchor rod extends out of the slope body and penetrates through the second cement soil protective layer; wherein:
the biological bacterial fertilizer leavening agent is mixed in the cement soil sprayed by the first cement soil protective layer, namely, the rotten fruits are sprayed after the cement soil is sprayed and are embedded into the first cement soil protective layer;
seeds and biological substrates are mixed in the cement soil sprayed by the second cement soil protective layer.
Optionally, the reinforcing mesh is buried in the first cement soil protection layer, the second cement soil protection layer is covered on the first cement soil protection layer, the wood pile retaining plate is erected on the slope surface and is paved with rice straw, the wood pile retaining plate is perpendicular to the slope surface and embedded in the first cement soil protection layer, after the second cement soil protection layer is cured and molded, the wood pile retaining plate is removed, a cavity is formed after the wood pile retaining plate is removed, and the first cement soil protection layer, fruits, rice straw and the second cement soil protection layer are sequentially added into the cavity so as to be the same as the slope protection structure around the cavity.
Optionally, the aggregate used for the first cement soil protective layer is: the cement-soil composite material comprises a mixture of clay, cement, a biological bacterial fertilizer starter, a cement early strength agent and a cement waterproof agent, wherein the clay accounts for 71-74% of the weight of the first cement-soil composite material, the cement accounts for 20-23% of the weight of the first cement-soil composite material, the biological bacterial fertilizer starter accounts for 2-4% of the weight of the first cement-soil composite material, the cement early strength agent accounts for 1% of the weight of the first cement-soil composite material, and the cement waterproof agent accounts for 2% of the weight of the first cement-soil composite material; the weight ratio of the water to the soil cement protective layer grouting water is 1.3:1.
further, the cement is ordinary Portland cement, such as P.O42.5.
Further, the biological bacterial fertilizer starter is a eubacterial organic fertilizer starter.
Further, the fruit is to be rotted, and the fruit can be a fruit with a long corrosion period, such as pear, mango and the like to be rotted.
Further, the cement early strength agent is chloride early strength agent, and the cement waterproof agent is organic silicon waterproof agent.
Further, the first cement soil protection layer is internally embedded with fruits of 50-60 grains/m 3 Preferably 50 particles/m 3 。
Optionally, the aggregate used for the second cement soil protective layer is: the cement-soil composite cement comprises a mixture of clay, cement, fertilizer, plant seeds, cement early strength agent and cement waterproof agent, wherein the clay accounts for 92-94% of the weight of the second cement-soil protection layer aggregate, the cement accounts for 2-4% of the weight of the second cement-soil protection layer aggregate, the fertilizer accounts for 1-3% of the weight of the second cement-soil protection layer aggregate, the cement early strength agent accounts for 0.5% of the weight of the second cement-soil protection layer aggregate, the cement waterproof agent accounts for 0.5% of the weight of the second cement-soil protection layer aggregate, and the water-material weight ratio of the second cement-soil protection layer grouting is 1.5:1.
further, the cement is ordinary Portland cement, such as P.O42.5.
Further, the fertilizer is a vegetation concrete greening additive (A-B bacteria).
Further, the plant seeds are bermudagrass, magnolia multiflora, ryegrass and the like, preferably bermudagrass.
Further, the cement early strength agent is chloride early strength agent, and the cement waterproof agent is organic silicon waterproof agent.
Further, the plant seeds adopted in the second cement soil protective layer are 200g/m 3 (200 g of seeds were added per cubic meter of slurry).
Further, the thickness of the first cement soil protective layer is 4-6cm, the thickness of the second cement soil protective layer is 4-6cm, the height of the cushion block is 2-3cm, the anchor rod extends out of the slope body for 20-25cm, and the thickness of the straw is 2-4cm.
Further, the distance between the anchor rods is 3m-3.5m, and the distance between the retaining plates of the wood piles is 3m-3.5m.
Furthermore, the outer surface of the soil retaining plate of the selected wood pile is coated with lubricating oil.
Further, the reinforcing mesh used was coated with a rust-preventive material at a mesh spacing of 30X 30cm.
Furthermore, the selected soil cement operation mode is wet spraying.
By the upper part, the rotten holes of fruits provide nutrients and enhance the water-retaining property of the side slope, and the vegetation and the cement soil protective layer are combined to improve the self strength of the high-steep side slope and also prevent rain wash, so that accidents such as landslide collapse and the like can be caused only by the bare non-vegetation of the side slope, the vegetation grows in the protective layer by rooting, sprouting and spreading, the purpose of ecological slope protection is achieved, and the problems of poor ecological treatment effect and short time effect of the high-steep side slope are solved.
According to the invention, cement soil with different cement contents is sprayed for the second time, and fruits to be rotten are added after the first cement soil spraying, so that an ecological slope protection structure net is formed by the cement soil, the anchor rods and the reinforcing steel bar net. Firstly spraying and seeding the high-content cement soil, adding a biological bacterial fertilizer leavening agent, firmly connecting the high-content cement soil with the high-steep slope, maintaining long-term mechanical stability of the high-steep slope together with a reinforcing mesh and an anchor rod, then spraying and seeding fruits to be rotted, forming mutually communicated pores after the fruits in the cement soil are rotted, providing a growth space and nutrition for vegetation, and simultaneously storing water; and erecting a wood pile retaining plate on the slope surface before the secondary spraying and sowing, and paving a layer of straw to prevent cement soil sprayed and sowed for the second time from sliding. The cement content of the secondary spray seeding is very low, seeds and biological base materials are doped, and as the first layer of high-content cement soil is firmly connected with the slope, the cement soil content of the secondary spray seeding can be further reduced, thereby being beneficial to vegetation growth and water storage and maintaining long-term ecological stability. The two spraying and seeding are combined to achieve the purpose of effectively maintaining the mechanical stability of the high and steep side slope and the stable growth of plants. The invention sprays fruits only after the cement soil sprayed for the first time to form a mixture of fruits and mud, and the fruits can form a good channel after being rotten, so that a good growth environment is provided for seeds in the cement soil on the upper layer, and meanwhile, the second layer of cement soil is embedded into pores formed by the rotten fruits and provides a certain biting force for the second layer of cement soil, so that landslide is prevented.
Correspondingly, the invention also claims a construction method of the fruit and mud composite ecological slope protection structure, which comprises the following steps:
s1: cleaning up obstacles on a high steep side slope and cleaning up loose dangerous rock bodies;
s2: positioning and paying off, measuring slope gradient, determining anchor rod hole position and horizontal hole distance, drilling, placing anchor rods, placing anchor rod bodies and grouting pipes after hole forming, performing corrosion prevention treatment, paying attention to the fact that the anchor rods extend out of the slope bodies by 20-25cm, cleaning holes and grouting, and cleaning slope surfaces after the anchor rods are stable;
s3: placing a cushion block on the slope, paving a reinforcing mesh from top to bottom, and fixing the reinforcing mesh through a plurality of embedded anchor rods;
s4: weighing aggregate used for the first cement soil protective layer according to a proportion after the reinforcement mesh is paved, uniformly mixing the aggregate with water according to a proportion to form slurry-like cement soil, loading the stirred cement soil into a wet spraying machine to spray the cement soil perpendicular to a slope surface after the wet spraying machine is ready for working, uniformly spraying the cement soil on the slope surface, and then spraying the fruits right above the slope surface by using a concrete sprayer (a common spray pipe with a diameter smaller than that of a part of fruits and a large-caliber spray pipe with a customized processing structure) for processing and customizing the spray pipe so that the fruits are directly inserted into the cement soil to form the first cement soil protective layer;
s5: after the first cement soil protective layer is cured for 3-5 days and 80% -90% of fruits are rotten, embedding a wood pile retaining plate into the first cement soil protective layer from top to bottom perpendicular to the slope, paving straws, weighing aggregate used by the second cement soil protective layer according to the proportion, uniformly mixing the aggregate with water according to the proportion to form slurry-like cement soil, and spraying the cement soil to the slope by a wet sprayer to form the second cement soil protective layer;
s6: after the second cement soil protective layer is maintained for 7-10 days, removing the wood pile retaining plate, forming a cavity after removing the wood pile retaining plate, and sequentially adding the first cement soil protective layer, fruits, straws and the second cement soil protective layer into the cavity so as to be the same as the slope protection structure around the cavity;
s7: and (5) covering the second cement soil protective layer with non-woven fabrics, sprinkling and curing, and uncovering the non-woven fabrics after 7-10 days to finish the construction of the ecological slope protection structure.
The selected cement soil operation mode is wet spraying.
Compared with the prior art, the invention has at least the following advantages:
the invention relates to an ecological slope protection treatment structure, which is characterized in that cement soil with different cement contents is sprayed for the second time, and fruits to be rotten are added after the first cement soil spraying, so that an ecological slope protection structure net is formed by the fruits, an anchor rod and a reinforcing steel bar net. Firstly spraying and seeding high-content cement soil, adding a biological bacterial fertilizer fermenting agent, firmly connecting the high-content cement soil with a high-steep slope, maintaining long-term mechanical stability of the high-steep slope together with a reinforcing mesh and an anchor rod, then spraying and seeding fruits to be rotted, and forming embedded communication pores by utilizing the fruits easy to rot and the biological bacterial fertilizer fermenting agent to provide plant growth space and nutrition and store water; and erecting a wood pile retaining plate on the slope surface before the secondary spraying and sowing, and paving a layer of straw to prevent cement soil sprayed and sowed for the second time from sliding. The cement content of the secondary spray seeding is very low, seeds and biological base materials are doped, and as the first layer of high-content cement soil is firmly connected with the slope, the cement soil content of the secondary spray seeding can be further reduced, thereby being beneficial to vegetation growth and water storage and maintaining long-term ecological stability. The secondary injection achieves the purpose of effectively maintaining the mechanical stability of the high and steep side slope and the stable growth of plants. The invention sprays fruits only after the cement soil sprayed for the first time to form a mixture of fruits and mud, and the fruits can form a good channel after being rotten, so that a good growth environment is provided for seeds in the cement soil on the upper layer, and meanwhile, the second layer of cement soil is embedded into pores formed by the rotten fruits and provides a certain biting force for the second layer of cement soil, so that landslide is prevented.
The invention adopts vertical spraying to enable the fruits to freely fall down and vertically and obliquely insert into the slope surface of the side slope, firstly, the fruits are directly embedded into the cement soil to avoid sliding during spraying, secondly, the fruits are rotten to form holes, and the second layer of cement soil and the first layer can form biting force to prevent landslide.
The method only adds the bermuda grass seeds and the like into the cement soil sprayed for the second time, and the plants are fast to reproduce and grow well in the environment. The root and stem spreading capability is strong, and the plant can be ensured to have good binding force with the slope surface of the high and steep side slope when the plant grows smoothly, so that the due effect of ecological slope protection is achieved.
The bermudagrass and the like selected by the invention have the characteristics of strong adaptability and strong rhizome spreading capability, can be used as good soil-fixing plants, and can successfully solve the problems of loose soil, easy collapse and easy rain wash.
The invention adopts the wet spraying method to carry out the cement soil construction, the construction process cost is lower, the construction safety is greatly improved (the first layer of cement soil has high strength, the phenomenon of landslide can be prevented in ecological slope protection), the construction is more convenient, the construction quality and efficiency are improved, and the problem of difficult construction of the high-steep slope spray sowing process is effectively solved.
The invention adopts the processing and customizing large-caliber concrete sprayer (namely, a top pump and a ground pump for spraying concrete are changed into self-made large-caliber spray hoses according to actual construction requirements, and the orifices of the large-caliber spray hoses are connected and reinforced by bolts) to carry out fruit spraying construction.
The construction technology can effectively solve the problem that cement soil sprayed by secondary spraying and wet spraying slides.
The invention has low cement consumption for the second time, reduces the construction cost of engineering, has fewer working procedures, shorter construction period and higher cost performance.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a composite ecological slope protection structure provided by the invention;
fig. 2 is a schematic diagram of a detailed structure of the composite ecological slope protection structure provided by the invention.
Wherein:
1-a reinforcing mesh; 2-a first cement soil protective layer; 3-rotting fruit; 4-anchor rod; 5-side slope; 6-a second cement soil protective layer; 7-wood pile soil retaining plates; 8-cushion blocks; 9-straw.
Detailed Description
The present invention will be specifically described with reference to examples below in order to make the objects and advantages of the present invention more apparent. It should be understood that the following text is merely used to describe a roof flashing structure or several embodiments of the present invention for preventing vapor intrusion, and is not intended to limit the scope of the invention in any way.
The fruit and mud compound ecological slope protection structure comprises a plurality of anchor rods 4 buried in a side slope, a reinforcing steel bar net 1 paved along the slope surface of the side slope 5 and fixed with the anchor rods, and a plurality of cushion blocks 8 used for supporting the reinforcing steel bar net 1 are arranged between the slope surface and the reinforcing steel bar net 1 as shown in fig. 1 and 2;
the slope surface of the side slope 5 is sequentially covered with a first cement soil protective layer 2 and a second cement soil protective layer 6, and the anchor rods 4 extend out of the slope body and penetrate through the second cement soil protective layer 6; wherein:
the biological bacterial fertilizer ferment is mixed in the cement soil sprayed by the first cement soil protective layer 2, namely, the rotten fruits 3 are sprayed after the cement soil is sprayed and are embedded into the first cement soil protective layer 2;
seeds and biological substrates are mixed in the cement soil sprayed by the second cement soil protective layer 6.
Optionally, the reinforcing mesh 1 is buried in the first cement soil protection layer 2, the second cement soil protection layer 6 is covered on the first cement soil protection layer 2, the wood pile retaining plate 7 is erected on the slope surface and the straw 9 is paved, the wood pile retaining plate 7 is embedded in the first cement soil protection layer 2 perpendicular to the slope surface, after the second cement soil protection layer 6 is cured and molded, the wood pile retaining plate 7 is removed, a cavity is formed after the wood pile retaining plate 7 is removed, and the first cement soil protection layer 2, the fruits 3, the straw 9 and the second cement soil protection layer 6 are sequentially added into the cavity so as to be the same as the slope protection structure around the cavity.
In the invention, the following components are added: the aggregate used for the first cement soil protective layer is as follows: the cement-soil composite material comprises a mixture of clay, cement, biological bacterial fertilizer starter, cement early strength agent and cement waterproofing agent, wherein the clay accounts for 71-74% of the weight of the first cement-soil composite material, the cement accounts for 20-23% of the weight of the first cement-soil composite material, the biological bacterial fertilizer starter accounts for 2-4% of the weight of the first cement-soil composite material, the cement early strength agent accounts for 1% of the weight of the first cement-soil composite material, the cement waterproofing agent accounts for 2% of the weight of the first cement-soil composite material, and the water-material weight ratio of the grouting of the first cement-soil composite material is 1.3:1.
in the invention, the following components are added: the aggregate used for the second cement soil protective layer is: the cement-soil composite cement comprises a mixture of clay, cement, fertilizer, plant seeds, cement early strength agent and cement waterproof agent, wherein the clay accounts for 92-94% of the weight of the second cement-soil protection layer aggregate, the cement accounts for 2-4% of the weight of the second cement-soil protection layer aggregate, the fertilizer accounts for 1-3% of the weight of the second cement-soil protection layer aggregate, the cement early strength agent accounts for 0.5% of the weight of the second cement-soil protection layer aggregate, the cement waterproof agent accounts for 0.5% of the weight of the second cement-soil protection layer aggregate, and the water-material weight ratio of the second cement-soil protection layer grouting is 1.5:1.
wherein: the cement is ordinary Portland cement, such as P.O42.5;
the biological bacterial fertilizer starter is a eubacterial organic fertilizer starter;
the fruit is to be rotted, and can be pear, mango and the like to be rotted with long corrosion period;
the fruits are embedded in the first cement soil protection layer at a speed of 50-60 particles/m 3 Preferably 50 particles/m 3 ；
The fertilizer is vegetation concrete greening additive (A-B bacteria);
the plant seeds are bermudagrass, magnolia multiflora, ryegrass and the like, preferably bermudagrass;
the cement early strength agent is chloride early strength agent, and the cement waterproof agent is organic silicon waterproof agent;
plant seeds 200g/m adopted in the second cement soil protective layer 3 (seed addition per cubic meter of slurry)200g)。
In the invention, the following components are added: the thickness of the first cement soil protective layer is 4-6cm, the thickness of the second cement soil protective layer is 4-6cm, the height of the cushion block is 2-3cm, the anchor rod extends out of the slope body by 20-25cm, and the thickness of the straw is 2-4cm.
The distance between the anchor rods is 3m-3.5m, and the distance between the retaining plates of the wood piles is 3m-3.5m.
The outer surface of the wood pile retaining plate is coated with lubricating oil; the steel bar meshes are coated with rust-proof materials, and the mesh spacing is 30 multiplied by 30cm.
The selected cement soil operation mode is wet spraying.
The construction method of the fruit and mud composite ecological slope protection structure comprises the following steps:
s1: cleaning up obstacles of the high and steep side slope 5, and cleaning up loose dangerous rock bodies;
s2: positioning and paying off, measuring slope gradient, determining anchor rod hole positions and horizontal hole distances, drilling, placing anchor rods 4, placing anchor rod bodies and grouting pipes after hole forming, performing corrosion prevention treatment, paying attention to the fact that the anchor rods 4 extend out of the slope bodies by 20-25cm, cleaning holes and grouting, and cleaning slope surfaces after the anchor rods are stable;
s3: placing a cushion block on the slope, paving a reinforcing mesh from top to bottom, and fixing the reinforcing mesh through a plurality of embedded anchor rods;
s4: weighing aggregate used for the first cement soil protective layer according to a proportion after the reinforcement mesh is paved, uniformly mixing the aggregate with water according to a proportion to form slurry-like cement soil, and loading the stirred cement soil into a wet spraying machine for spraying perpendicular to a slope surface after the wet spraying machine is ready to work, so that the cement soil is uniformly sprayed on the slope surface;
then spraying the fruits right above the slope surface by using a concrete sprayer for processing and customizing the large-caliber spray pipe (the diameter of a common spray pipe is smaller than that of a part of fruits, and the processing and customizing large-caliber spray pipe is adopted for construction), so that the fruits are directly inserted into the cement soil to form a first cement soil protective layer;
s5: after the first cement soil protective layer is cured for 3-5 days and 80% -90% of fruits are rotten, embedding a wood pile retaining plate into the first cement soil protective layer from top to bottom perpendicular to the slope, paving straws, weighing aggregate used by the second cement soil protective layer according to the proportion, uniformly mixing the aggregate with water according to the proportion to form slurry-like cement soil, and spraying the cement soil to the slope by a wet sprayer to form the second cement soil protective layer;
s6: after the second cement soil protective layer is maintained for 7-10 days, removing the wood pile retaining plate, forming a cavity after removing the wood pile retaining plate, and sequentially adding the first cement soil protective layer, fruits, straws and the second cement soil protective layer into the cavity so as to be the same as the slope protection structure around the cavity;
s7: and (5) covering the second cement soil protective layer with non-woven fabrics, sprinkling and curing, and uncovering the non-woven fabrics after 7-10 days to finish the construction of the ecological slope protection structure.
Example 1:
the slope of a certain high and steep slope is 45 degrees, and the slope is shale. The invention is intended to be used for ecological slope protection.
Anchor rod 4: the anchor rod 4 adopts phi 16 screw thread steel bars, and the length is 50cm; the length of the anchor rod 4 inserted into the side slope is 30cm, the anchor rod extends out of the side slope for 20cm, and the distance is 3.5m.
Reinforcing mesh 1: the steel bar net 1 adopts HPB300 grade steel bars, the distance between the steel bar net 1 and the slope surface is 3cm, the net spacing is 30 multiplied by 30cm, and the surface is smeared with rust-proof materials.
Cushion block 8: the height of the cushion block is 3cm, and 3 cushion blocks are padded on each flat cushion of the reinforcing mesh 1.
As shown in fig. 1-2, the fruit and mud composite ecological slope protection structure comprises a plurality of anchor rods 4 buried in a side slope, wherein the anchor rods 4 penetrate through a reinforcing mesh 1 and are inserted into drilled holes, the reinforcing mesh 1 and the anchor rods 4 are firmly fixed through welding, two ecological protection layers are covered on the slope surface of a side slope 5, and each protection layer consists of a first cement soil protection layer 2 and a second cement soil protection layer 6.
The aggregate used by the first cement soil protective layer 2 is a mixture of clay, cement, biological bacterial fertilizer starter, cement early strength agent and cement waterproofing agent. Wherein the clay accounts for 74% of the weight of the first cement soil protective layer aggregate, the cement accounts for 20% of the weight of the first cement soil protective layer aggregate, the biological bacterial fertilizer ferment accounts for 3% of the weight of the first cement soil protective layer aggregate, the cement early strength agent accounts for 1% of the weight of the first cement soil protective layer aggregate, and the cementThe waterproof agent accounts for 2% of the weight of the aggregate of the first cement soil protective layer, and the weight ratio of the water materials of the grouting of the first cement soil protective layer is 1.3:1, 50 fruits/m 3 。
The aggregate used for the second cement soil protective layer 6 is: clay, cement, fertilizer, plant seeds, cement early strength agent and cement waterproofing agent. Wherein, clay accounts for 95% of the weight of the aggregate of the second cement soil protective layer, cement accounts for 2% of the weight of the aggregate of the second cement soil protective layer, fertilizer accounts for 2% of the weight of the aggregate of the second cement soil layer, cement early strength agent accounts for 0.5% of the weight of the aggregate of the first cement soil protective layer, cement waterproof agent accounts for 0.5% of the weight of the aggregate of the first cement soil protective layer, and the water-to-material ratio of the grouting of the second cement soil protective layer is 1.5:1, a step of; plant seeds 200g/m 3 。
The cement is ordinary Portland cement P.O42.5;
the fertilizer is a vegetation concrete greening additive (A-B bacteria);
the plant seeds are bermudagrass;
the biological bacterial fertilizer starter is a eubacterial organic fertilizer starter;
the cement early strength agent is chloride early strength agent;
the cement waterproof agent is an organosilicon waterproof agent;
the fruit is pear and mango mixture to be rotten.
A construction method of a fruit and mud composite ecological slope protection structure comprises the following steps:
step 1: cleaning up obstacles of the high and steep side slope 5, and cleaning up loose dangerous rock bodies;
step 2: positioning and paying off, measuring the slope 5, determining the hole position and the horizontal hole distance of the anchor rod 4, drilling holes, placing the anchor rod 4, and cleaning the slope after the anchor rod 4 is stable;
step 3: placing a cushion block 8 on the slope, paving a reinforcing mesh 1 from top to bottom, and fixing the reinforcing mesh 1 through a plurality of embedded anchor rods 4;
step 4: weighing aggregate used by the first cement soil protective layer according to a proportion, uniformly mixing the aggregate with water according to a proportion to form slurry cement soil, vertically spraying the cement soil to a slope by adopting a wet spraying machine, and then spraying fruits 3 into the cement soil by adopting a concrete spraying machine of a large-caliber spray pipe right above the slope surface to form a first cement soil protective layer 2;
step 5: after the first cement soil protective layer 2 is cured for 3-5 days and 380% -90% of fruits are rotten, embedding a wood pile retaining plate 7 into the first cement soil protective layer 2 from top to bottom perpendicular to the slope, paving straws 9, weighing aggregate used by the second cement soil protective layer according to the proportion, uniformly mixing the aggregate with water according to the proportion to form slurry-like cement soil, and spraying the cement soil to the slope by a wet sprayer to form a second cement soil protective layer 6;
step 6: after the second cement soil protective layer 6 is cured for 7-10 days, removing the wood pile retaining plate 7 to form a cavity, and sequentially adding the first cement soil protective layer 2, the fruits 3, the straw 9 and the second cement soil protective layer 6 into the cavity so as to be the same as the slope protection structure around the cavity;
step 7: and (3) covering the second cement soil protective layer 6 with non-woven fabrics for watering maintenance, and uncovering the non-woven fabrics after 7-10 days to finish the construction of the ecological slope protection structure.
All steps are performed on a sunny day.
And (3) the thickness of the wood pile retaining plate 7 used in the step (6) is 10cm, the distance between the wood pile retaining plates is 3m, the wood pile retaining plates extend into the cement soil protection layer for 8cm, and a layer of lubricating oil is smeared on the surfaces of the wood pile retaining plates.
The thickness of the first cement soil protective layer is 4cm, and the thickness of the second cement soil protective layer is 6cm.
Example 2:
the gradient of a high and steep slope is 60 degrees, and the slope is shale. The invention is intended to be used for ecological slope protection.
Anchor rod 4: the anchor rod 4 adopts phi 18 screw thread steel bars, and the length is 55cm; the length of the anchor rod 4 inserted into the side slope is 32cm, the anchor rod extends out of the side slope by 23cm, and the distance is 3m.
Reinforcing mesh 1: the steel bar net 1 adopts HPB300 grade steel bars, the distance between the steel bar net 1 and the slope surface is 3cm, the net spacing is 30 multiplied by 30cm, and the surface is smeared with rust-proof materials.
Cushion block 8: the height of the cushion block is 3cm, and 3 cushion blocks are padded on each flat cushion of the reinforcing mesh 1.
As shown in fig. 1-2, the fruit and mud composite ecological slope protection structure comprises a plurality of anchor rods 4 buried in a side slope, wherein the anchor rods 4 penetrate through a reinforcing mesh 1 and are inserted into drilled holes, the reinforcing mesh 1 and the anchor rods 4 are firmly fixed through welding, two ecological protection layers are covered on the slope surface of a side slope 5, and each protection layer consists of a first cement soil protection layer 2 and a second cement soil protection layer 6.
The aggregate used by the first cement soil protective layer 2 is a mixture of clay, cement, biological bacterial fertilizer starter, cement early strength agent and cement waterproofing agent. Wherein the clay accounts for 73% of the weight of the first cement soil protective layer aggregate, the cement accounts for 22% of the weight of the first cement soil protective layer aggregate, the biological bacterial fertilizer starter accounts for 3% of the weight of the first cement soil protective layer aggregate, the cement early strength agent accounts for 1% of the weight of the first cement soil protective layer aggregate, the cement waterproof agent accounts for 1% of the weight of the first cement soil protective layer aggregate, and the water-to-material ratio of the first cement soil grouting is 1.3:1, 55 fruits/m 3 。
The aggregate used for the second cement soil protective layer 6 is: clay, cement, fertilizer, plant seeds, cement early strength agent and cement waterproofing agent. Wherein, clay accounts for 94% of the weight of the aggregate of the second cement soil protective layer, cement accounts for 3% of the weight of the aggregate of the second cement soil protective layer, fertilizer accounts for 2% of the weight of the aggregate of the second cement soil layer, cement early strength agent accounts for 0.5% of the weight of the aggregate of the first cement soil protective layer, cement waterproof agent accounts for 0.5% of the weight of the aggregate of the first cement soil protective layer, and the weight ratio of water materials of the grouting of the second cement soil protective layer is 1.5:1, plant seed 200g/m 3 。
The cement is ordinary Portland cement P.O42.5;
the fertilizer is a vegetation concrete greening additive (A-B bacteria);
the plant seeds are bermudagrass;
the biological bacterial fertilizer starter is a eubacterial organic fertilizer starter;
the cement early strength agent is chloride early strength agent;
the cement waterproof agent is an organosilicon waterproof agent;
the fruit is pear and mango mixture to be rotten.
A construction method of a fruit and mud composite ecological slope protection structure comprises the following steps:
step 1: cleaning up obstacles of the high and steep side slope 5, and cleaning up loose dangerous rock bodies;
step 2: positioning and paying off, measuring the slope 5, determining the hole position and the horizontal hole distance of the anchor rod 4, drilling holes, placing the anchor rod 4, and cleaning the slope after the anchor rod 4 is stable;
step 3: placing a cushion block 8 on the slope, paving a reinforcing mesh 1 from top to bottom, and fixing the reinforcing mesh 1 through a plurality of embedded anchor rods 4;
step 4: weighing aggregate used by the first cement soil protective layer according to a proportion, uniformly mixing the aggregate with water according to a proportion to form slurry cement soil, vertically spraying the cement soil to a slope by adopting a wet spraying machine, and then spraying fruits 3 into the cement soil opposite to the slope by adopting a concrete spraying machine of a large-caliber spray pipe to form a first cement soil protective layer 2;
step 5: after the first cement soil protective layer 2 is cured for 3-5 days and fruits are rotten by 3-90%, embedding a wood pile retaining plate 7 into the first cement soil protective layer 2 perpendicular to the slope, paving straws 9, weighing aggregate used for the second cement soil protective layer according to the proportion, uniformly mixing the aggregate with water according to the proportion to form slurry-like cement soil, and spraying the cement soil to the slope by a wet sprayer to form a second cement soil protective layer 6;
step 6: after the second cement soil protective layer 6 is cured for 7-10 days, removing the wood pile retaining plate 7 to form a cavity, and sequentially adding the first cement soil protective layer 2, the fruits 3, the straw 9 and the second cement soil protective layer 6 into the cavity so as to be the same as the slope protection structure around the cavity;
step 7: and (3) covering the second cement soil protective layer 6 with non-woven fabrics for watering maintenance, and uncovering the non-woven fabrics after 7-10 days to finish the construction of the ecological slope protection structure.
All steps are performed on a sunny day.
The thickness of the wood pile retaining plate 7 used in the step 6 is 10cm, the distance is 3.5m, the wood pile retaining plate extends into the cement soil protection layer for 8cm, and a layer of lubricating oil is smeared on the surface of the wood pile retaining plate.
The thickness of the first cement soil protective layer is 5cm, and the thickness of the second cement soil protective layer is 5cm.
Example 3:
the gradient of a high and steep slope is 70 degrees, and the slope is shale. The invention is intended to be used for ecological slope protection.
Anchor rod 4: the anchor rod 4 adopts phi 20 screw thread steel bars, and the length is 60cm; the length of the anchor rod 4 inserted into the side slope is 35cm, the anchor rod extends out of the side slope by 25cm, and the distance is 3.5m.
Reinforcing mesh 1: the steel bar net 1 adopts HPB300 grade steel bars, the distance between the steel bar net 1 and the slope surface is 3cm, the net spacing is 30 multiplied by 30cm, and the surface is smeared with rust-proof materials.
Cushion block 8: the height of the cushion block is 3cm, and 3 cushion blocks are padded on each flat cushion of the reinforcing mesh 1.
As shown in fig. 1-2, the fruit and mud composite ecological slope protection structure comprises a plurality of anchor rods 4 buried in a side slope, wherein the anchor rods 4 penetrate through a reinforcing mesh 1 and are inserted into drilled holes, the reinforcing mesh 1 and the anchor rods 4 are firmly fixed through welding, two ecological protection layers are covered on the slope surface of a side slope 5, and each protection layer consists of a first cement soil protection layer 2 and a second cement soil protection layer 6.
The first cement soil protective layer 2 is made of clay, cement, biological bacterial fertilizer starter, cement early strength agent and cement waterproofing agent. Wherein the clay accounts for 72% of the weight of the first cement soil protective layer aggregate, the cement accounts for 23% of the weight of the first cement soil protective layer aggregate, the biological bacterial fertilizer starter accounts for 3% of the weight of the first cement soil protective layer aggregate, the cement early strength agent accounts for 1% of the weight of the first cement soil protective layer aggregate, the cement waterproof agent accounts for 1% of the weight of the first cement soil protective layer aggregate, and the water-to-material weight ratio of the first cement soil protective layer grouting is 1.3:1, 60 fruits/m 3 。
The aggregate used for the second cement soil protective layer 6 is: clay, cement, fertilizer, plant seeds, cement early strength agent and cement waterproofing agent. Wherein, the clay accounts for 93 percent of the weight of the aggregate of the second cement soil protective layer, the cement accounts for 4 percent of the weight of the aggregate of the second cement soil protective layer, the fertilizer accounts for 2 percent of the weight of the aggregate of the second cement soil layer, and the cement early strength agent accounts for the first water0.5% of the weight of the soil protection layer aggregate, the cement waterproof agent accounts for 0.5% of the weight of the first cement soil protection layer aggregate, and the weight ratio of the water materials of the second cement soil protection layer grouting is 1.5:1, a step of; plant seeds 200g/m 3 。
The cement is ordinary Portland cement P.O42.5;
the fertilizer is a vegetation concrete greening additive (A-B bacteria);
the plant seeds are bermudagrass;
the biological bacterial fertilizer starter is a eubacterial organic fertilizer starter;
the cement early strength agent is chloride early strength agent;
the cement waterproof agent is an organosilicon waterproof agent;
the fruit is pear and mango mixture to be rotten.
A construction method of a fruit and mud composite ecological slope protection structure comprises the following steps:
step 1: cleaning up obstacles of the high and steep side slope 5, and cleaning up loose dangerous rock bodies;
step 2: positioning and paying off, measuring the slope 5, determining the hole position and the horizontal hole distance of the anchor rod 4, drilling holes, placing the anchor rod 4, and cleaning the slope after the anchor rod 4 is stable;
step 3: placing a cushion block 8 on the slope, paving a reinforcing mesh 1 from top to bottom, and fixing the reinforcing mesh 1 through a plurality of embedded anchor rods 4;
step 4: weighing aggregate used by the first cement soil protective layer according to a proportion, uniformly mixing the aggregate with water according to a proportion to form slurry cement soil, vertically spraying the cement soil to a slope by adopting a wet spraying machine, and then spraying fruits 3 into the cement soil by adopting a concrete spraying machine of a large-caliber spray pipe right above the slope surface to form a first cement soil protective layer 2;
step 5: after the first cement soil protective layer 2 is cured for 3-5 days and fruits are rotten by 3-90%, embedding a wood pile retaining plate 7 into the first cement soil protective layer 2 from top to bottom perpendicular to the slope, paving straws 9, weighing aggregate used by the second cement soil protective layer according to the proportion, uniformly mixing the aggregate with water according to the proportion to form slurry-like cement soil, and spraying the cement soil to the slope by a wet spraying machine to form a second cement soil protective layer 6;
step 6: after the second cement soil protective layer 6 is cured for 7-10 days, removing the wood pile retaining plate 7 to form a cavity, and sequentially adding the first cement soil protective layer 2, the fruits 3, the straw 9 and the second cement soil protective layer 6 into the cavity so as to be the same as the slope protection structure around the cavity;
step 7: and (3) covering the second cement soil protective layer 6 with non-woven fabrics for watering maintenance, and uncovering the non-woven fabrics after 7-10 days to finish the construction of the ecological slope protection structure.
All steps are performed on a sunny day.
The thickness of the wood pile retaining plate 7 used in the step 6 is 15cm, the distance is 3.5m, the wood pile retaining plate extends into the cement soil protection layer for 8cm, and a layer of lubricating oil is smeared on the surface of the wood pile retaining plate.
The thickness of the first cement soil protective layer is 6cm, and the thickness of the second cement soil protective layer is 4cm.
According to the invention, cement soil with different cement contents is sprayed for the second time, and fruits to be rotten are added after the first cement soil spraying, so that an ecological slope protection structure net is formed by the cement soil, the anchor rods and the reinforcing steel bar net. The cement soil is added into the two layers, so that the self strength of the slope body is improved, meanwhile, the bermuda grass seeds are doped into the second layer of cement soil, the bermuda grass is rooted in rotten fruits (the fruits are rotten to provide nutrition and have water retention property) holes, root systems are grown in a chained mode in the second layer of cement soil, the self characteristics of the bermuda grass are combined, the self strength of the high steep slope is improved by combining vegetation and the high steep slope doped with the cement soil, the water retention property of the slope is improved, rain wash is prevented, the slope is maintained to be stable for a long time, and the timeliness durability is stronger.
The foregoing description is only for the convenience of those skilled in the art to understand the technical solution of the present invention, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fruit and mud compound ecological slope protection structure is characterized by comprising
The anchor rods are buried in the side slope, the reinforcing steel bar meshes are paved along the slope surface of the side slope and fixed with the anchor rods, and a plurality of cushion blocks are arranged between the slope surface and the reinforcing steel bar meshes and used for supporting the reinforcing steel bar meshes;
the slope surface is sequentially covered with a first cement soil protective layer and a second cement soil protective layer, and the anchor rod extends out of the slope body and penetrates through the second cement soil protective layer; wherein:
the biological bacterial fertilizer leavening agent is mixed in the cement soil sprayed by the first cement soil protective layer, namely, the rotten fruits are sprayed after the cement soil is sprayed and are embedded into the first cement soil protective layer;
after the first cement soil protective layer is cured for 3-5 days and 80% -90% of fruits are rotten, spraying a second cement soil protective layer;
seeds and biological substrates are mixed in the cement soil sprayed by the second cement soil protective layer.
2. The fruit and mud composite ecological slope protection structure according to claim 1, which is characterized in that,
the reinforcement mesh is buried in the first cement soil protection layer;
the second cement soil protection layer is covered on the first cement soil protection layer, a wood pile retaining plate is erected on the slope surface and is paved with straws, the wood pile retaining plate is perpendicular to the slope surface and embedded into the first cement soil protection layer, the wood pile retaining plate is removed after the second cement soil protection layer is cured and molded, a cavity is formed after the wood pile retaining plate is removed, and the first cement soil protection layer, fruits, straws and the second cement soil protection layer are sequentially added into the cavity to be identical to the slope protection structure around the cavity.
3. The fruit and mud composite ecological slope protection structure according to claim 1, which is characterized in that,
aggregate used for the first cement soil protective layer is as follows: the cement-soil composite material comprises a mixture of clay, cement, a biological bacterial fertilizer starter, a cement early strength agent and a cement waterproof agent, wherein the clay accounts for 71-74% of the weight of the first cement-soil composite material, the cement accounts for 20-23% of the weight of the first cement-soil composite material, the biological bacterial fertilizer starter accounts for 2-4% of the weight of the first cement-soil composite material, the cement early strength agent accounts for 1% of the weight of the first cement-soil composite material, and the cement waterproof agent accounts for 2% of the weight of the first cement-soil composite material;
the weight ratio of the water to the soil cement protective layer grouting water is 1.3:1, a step of;
aggregate used for the second cement soil protective layer is as follows: the cement-soil composite material comprises a mixture of clay, cement, fertilizer, plant seeds, cement early strength agent and cement waterproof agent, wherein the clay accounts for 92-94% of the weight of the second cement-soil composite material, the cement accounts for 2-4% of the weight of the second cement-soil composite material, the fertilizer accounts for 1-3% of the weight of the second cement-soil composite material, the cement early strength agent accounts for 0.5% of the weight of the second cement-soil composite material, and the cement waterproof agent accounts for 0.5% of the weight of the second cement-soil composite material;
the weight ratio of the water to the soil cement protective layer grouting water is 1.5:1.
4. the fruit and mud composite ecological slope protection structure according to claim 3, wherein,
the cement adopts ordinary Portland cement;
the biological bacterial fertilizer starter is a eubacterial organic fertilizer starter;
the fruits are fruits with long corrosion period of pears and mangoes to be rotted;
the fertilizer is vegetation concrete greening additive A-B bacteria;
the plant seeds are bermudagrass, magnolia multiflora and ryegrass.
5. The fruit and mud composite ecological slope protection structure according to claim 3, wherein,
the first cement soil protection layer is internally embedded with fruits of 50-60 grains/m 3 ；
Plant seeds adopted in the second cement soil protective layer are 200g/m 3 。
6. The fruit and mud composite ecological slope protection structure according to claim 3, wherein,
the cement early strength agent is chloride early strength agent, and the cement waterproof agent is organic silicon waterproof agent.
7. The fruit and mud composite ecological slope protection structure according to claim 2, which is characterized in that,
the thickness of the first cement soil protective layer and the second cement soil protective layer is 4-6cm;
the height of the cushion block is 2-3cm, the anchor rod extends out of the slope body by 20-25cm, and the thickness of the straw is 2-4cm;
the distance between the anchor rods is 3m-3.5m, and the distance between the retaining plates of the wood piles is 3m-3.5m.
8. The fruit and mud composite ecological slope protection structure according to claim 2, which is characterized in that,
the outer surface of the retaining plate of the selected wood pile is coated with lubricating oil;
the steel bar mesh is coated with rust-proof material, and the mesh spacing is 30cm multiplied by 30cm.
9. The fruit and mud composite ecological slope protection structure according to claim 1, which is characterized in that,
the two construction modes of the cement soil are wet spraying.
10. A construction method of a fruit and mud composite ecological slope protection structure according to any one of claims 1 to 9, comprising the following steps:
(1) Cleaning up obstacles on a high steep side slope and cleaning up loose dangerous rock bodies;
(2) Positioning and paying off, measuring slope gradient, accurately determining the positions of anchor rod holes and the distances between horizontal holes, drilling holes, placing anchor rod bodies and grouting pipes after hole forming, performing anti-corrosion treatment, cleaning holes and grouting, and cleaning the slope after the anchor rods are stable;
(3) Placing a cushion block on the slope, paving a reinforcing mesh from top to bottom, and fixing the reinforcing mesh through a plurality of embedded anchor rods;
(4) Weighing aggregate used by the first cement soil protective layer according to a proportion, uniformly mixing the aggregate with water according to a proportion to form slurry-like cement soil, spraying the cement soil perpendicular to a slope surface by adopting a wet spraying machine, and then spraying fruits right above the slope surface by adopting a concrete spraying machine of a large-caliber spray pipe, so that the fruits are directly inserted into the cement soil to form the first cement soil protective layer;
(5) After the first cement soil protective layer is cured for 3-5 days and 80% -90% of fruits are rotten, embedding a wood pile retaining plate into the first cement soil protective layer from top to bottom perpendicular to the slope, paving straws, weighing aggregate used by the second cement soil protective layer according to the proportion, uniformly mixing the aggregate with water according to the proportion to form slurry-like cement soil, and spraying the cement soil to the slope by a wet sprayer to form the second cement soil protective layer;
(6) After the second cement soil protective layer is maintained for 7-10 days, removing the wood pile retaining plate, forming a cavity after removing the wood pile retaining plate, and sequentially adding the first cement soil protective layer, fruits, straws and the second cement soil protective layer into the cavity so as to be the same as the slope protection structure around the cavity;
(7) And (5) covering the second cement soil protective layer with non-woven fabrics, sprinkling and curing, and uncovering the non-woven fabrics after 7-10 days to finish the construction of the ecological slope protection structure.
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