CN110670606A - Straw type ecological slope protection structure and method - Google Patents
Straw type ecological slope protection structure and method Download PDFInfo
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- CN110670606A CN110670606A CN201910905109.2A CN201910905109A CN110670606A CN 110670606 A CN110670606 A CN 110670606A CN 201910905109 A CN201910905109 A CN 201910905109A CN 110670606 A CN110670606 A CN 110670606A
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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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- 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
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
- A01G9/029—Receptacles for seedlings
- A01G9/0291—Planting receptacles specially adapted for remaining in the soil after planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
- A01G9/029—Receptacles for seedlings
- A01G9/0293—Seed or shoot receptacles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
- E02B3/125—Flexible prefabricated covering elements, e.g. mats, strips mainly consisting of vegetable material, e.g. wood, reeds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
Abstract
The invention discloses a straw type ecological slope protection structure and a method, comprising a fibrilia layer, a net-shaped frame formed by straws and a planting groove, wherein the fibrilia layer is laid on a side slope and fixed in the side slope soil at the corner and middle positions of the fibrilia layer; a plurality of triangular prism-shaped cells are formed in the net-shaped frame, and planting grooves are arranged in the triangular prism-shaped cells at intervals; the surfaces of the planting grooves and the net-shaped frame are also covered with a layer of surface soil.
Description
Technical Field
The invention relates to a cellular ecological slope protection structure with planting grooves and a method, which are obtained by binding and crushing sorghum straws, fibrilia cloth and non-woven fabrics, and belongs to the field of civil engineering.
Background
Along with the acceleration of the urbanization process, the growth and repair of urban highways, railways, river water conservancy and the like are increasing. Large-scale industrial construction and mining cause a large number of exposed soil slopes with various types and complex components to become a serious disaster area of water and soil loss. Meanwhile, urban non-point source pollution is aggravated, and a large amount of pollutants enter a river water body along with surface rainwater runoff, so that the pollution is one of main reasons for water quality deterioration of the urban water body gradually. Therefore, the ecological management is carried out by adopting effective measures, the double effects of protecting the side slope and improving the water body pollution are realized, and the ecological protection method is a vivid practice of the harmonious development concept of human and nature in the processes of environmental protection and ecological construction.
The traditional ecological slope protection mode comprises artificial grass slope protection, ecological bag slope protection, grid ecological slope protection and the like. However, the slope protection mode generally has the problems of low survival rate of grass seeds, limited survival conditions of vegetation in later period, poor overall stability, interception of surface runoff by plant water storage and the like, and often cannot achieve satisfactory effect.
Disclosure of Invention
The invention discloses a straw type ecological slope protection structure and a method for solving the technical problems in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a straw type ecological slope protection structure, which comprises a fibrilia layer, a net-shaped frame formed by straws and a planting groove, wherein the fibrilia layer is laid on a side slope, the side slope soil is fixed at the corners and the middle position of the fibrilia layer, the net-shaped frame formed by the straws is arranged on the fibrilia layer, and the net-shaped frame formed by the straws is also fixed in the side slope soil at the positions of the top and the bottom of the slope; a plurality of triangular prism-shaped cells are formed in the net-shaped frame, and planting grooves are arranged in the triangular prism-shaped cells at intervals; the surface of the net-shaped frame formed by the planting grooves and the straws is also covered with a layer of surface soil.
As a further technical scheme, the height of the planting groove is lower than that of the straw grid chamber, the size of the bottom surface of the planting groove is consistent with the area of the surface, located on the slope protection, in the triangular grid formed by binding the straws, the size of the bottom surface of the planting groove is larger than that of the top surface of the planting groove, and the bottom surface of the planting groove is in contact with the slope protection.
As a further technical scheme, the fibrilia layer is fixed on the side slope through a wood wedge.
As a further technical scheme, the net-shaped frame formed by the straws is fixed at the top and bottom of the slope by anchors, and the parts of the wood wedges at the corners and the middle position, which are exposed out of the ground, are sleeved in the grid chambers.
The invention also provides a straw type ecological slope protection method, which comprises the following steps:
step 1 arrangement of straw mesh frame
Firstly, establishing a cross frame along a slope, and then establishing a trapezoidal frame according to the slope and the length of the slope surface; the upper and lower edges of the trapezoidal frame form an angle of 45 degrees with the axis of the protective embankment; transversely binding straws in the trapezoidal frame, and then obliquely binding the straws, so that a plurality of triangular prism-shaped cells are formed in the trapezoidal frame;
step 2, manufacturing planting grooves
Crushing sorghum stalks into particles, mixing the particles in soil, adding a proper amount of water, and uniformly stirring to enable the particles to be colloidal and be bonded into a whole; putting the mixture into a hollow triangular frustum-shaped mold, and then drying and molding the mixture; after the forming, wrapping the non-woven geotextile with the non-woven geotextile, and spraying a proper amount of water on the surface to bond the non-woven geotextile and the non-woven geotextile into a whole;
step 3, fixing and arranging the whole structure
After the side slope is cleaned, firstly, a layer of fibrilia cloth is paved, and the fibrilia cloth is inserted into the side slope soil by wood wedges at the corners and the middle positions;
fixing the slope top and the slope bottom of the straw type mesh grid chamber frame by using an anchorage device, and sleeving the parts of the wood wedges at the corners and the middle position, which are exposed out of the ground, into the grid chamber;
after the upper layer structure is fixed, placing the planting groove formed in the step (2) into each grid chamber, wherein the bottom surface of the planting groove and the edge of the bottom surface of the triangular grid chamber can be tightly attached to the straws and can be tightly contacted with the lower fibrilia layer;
after the whole structure is arranged, grass seeds are sown in the planting grooves, nutrient solution is sprayed, and finally a layer of surface soil is covered.
As a further technical scheme, the sequence of the step 1 and the step 2 can be exchanged.
As a further technical scheme, the height of the planting groove is lower than that of the straw grid chamber, and the size of the bottom surface of the planting groove is consistent with that of the grid chamber formed by binding straws.
As a further technical scheme, the straws are connected through the non-stubble hemp ropes, and the interior of the straws is made into a triangular prism-shaped grid chamber.
The invention has the following beneficial effects:
1. straw grid as fixed layer
The straws are connected through the stubble-free hemp ropes to form triangular prism-shaped cells, the mechanical stability of the triangular structure is utilized, nodes in the diagonal direction can bear larger torque without being torn, meanwhile, the longitudinal supporting force of the triangular prism-shaped object is large, the transverse bearing force is small, the longitudinal stress generates compressive stress, the structure is strengthened theoretically, the better ground gripping performance is realized, and the cell is taken as a layer of fixed structure on the slope. Because the lignification degree of the straw is higher, the fiber is well developed, and the impact resistance is strong. Therefore, the straw grid layer can prevent the slope from being attacked by rainwater splash, and the slope soil is prevented from being washed away and lost before vegetation grows. Meanwhile, grass seeds can be prevented from scattering, or plants are washed away by rainwater in the early growth stage, and a good effect of protecting the slope and the grass is achieved. Certain gaps are reserved on the side faces of the triangular prisms and the straws in connection, so that better light and water permeability is ensured, and survival of plants is facilitated. In addition, the straw is degradable, so that the straw can be converted into natural fertilizer to react on soil after the plant grows, the natural fertilizer is reused by the plant, and the growth space of the plant root system cannot be limited.
2. Filtering of the fibrilia layer
The fibrilia layer is arranged at the bottom layer of the slope protection structure, and can prevent the soil of the side slope from being taken away by surface runoff when the grass seeds are not completely grown in the previous period. After the vegetation, its density uprises, and the herbaceous plant root system links to each other with lower floor's fibrilia bed course, forms firm protection surface course with the winding of soil granule, can improve the infiltration and the water-absorbing capacity of bank, delays the velocity of flow of surface runoff, reduces surface runoff volume, increases time and the frequency of plant, microorganism contact pollutant, more is favorable to holding back, adsorbs, degrades the pollutant in the runoff. In addition, the fibrilia has the characteristics of stable performance, micron-sized diameter, high filtering precision, small water flow resistance and the like. The fibrilia layer is combined with the plant layer, and the plant layer with the compact and uniform upper layer can firstly play a role in filtering. Under the effect of water pressure, the fibrilia silk layer is tightly compressed, the outer layer is relatively loose, the inner layer becomes more compact under the extrusion effect, and thus, the filter material with good gradation is integrally formed, the resistance of water flow is smaller while the integral structure has higher porosity, the specific surface area of the filter material is greatly increased, the adsorption capacity is enhanced, and the pollutant interception and pollutant receiving capacity is also greatly improved. Along with the filtration, the resistance produced when rivers flow through the filtering layer further compacts the filtering layer, makes the dirt intercepting ability of whole filtering layer can make full use of.
3. Combined skeleton effect of non-woven fabric and planting groove
The non-woven fabric has the characteristics of softness, air permeability, toughness, high degradability and the like, and is an environment-friendly reinforced material. The non-woven fabrics and the soil particles have strong adsorption capacity, can lock shallow soil, form a stable interface, prevent water and soil loss and promote plant growth. The sorghum stalks are smashed and mixed in the soil, evenly stirred and added with a proper amount of water to be bonded into a whole. Placing in a triangular table type mold with a hollow middle part, wrapping with non-woven fabric after molding, and placing in a first layer of straw chamber. The planting grooves doped with the sorghum stalk particles have a reinforcement effect on the whole structure; on the other hand, the design that the basal area of planting the groove is greater than the apical area can with keep bigger area of contact between the domatic, be difficult for the slippage to restrict the displacement of upper straw net better, keep higher stability. Meanwhile, the loss of the seeds which are just sowed can be avoided, and the survival rate of the plants is improved. The outer-layer non-woven fabric can exert the advantages of toughness, water permeability and good air permeability, tightly lock shallow soil on the surface, and prevent the planting groove from falling slag and dusting. After the plants grow, the planting grooves mixed with the sorghum stalk particles can be converted into natural fertilizers to be reused by the plants, and the growth of the plants can be promoted while water and soil are preserved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of a straw web framework;
FIG. 2 is a triangular prism-shaped cell;
FIG. 3 is a view of the structure of a planting groove;
FIG. 4 is a side view of the planting groove;
fig. 5 is a schematic diagram of the entire structure.
In the figure: the artificial turf fiber planting device comprises an anchorage device 1, wood wedges 2, triangular prism-shaped grid chambers 3, straws 4, planting grooves 5, a net-shaped frame 6 and a fibrilia layer 7.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
as introduced by the background art, the prior art has shortcomings, and in order to solve the technical problems, the application provides a straw type ecological slope protection structure and a method.
In a typical embodiment of the present application, as shown in fig. 5, a straw type ecological slope protection structure includes a hemp fiber layer 7, a net-shaped frame 6 formed by straw and a planting groove 5, wherein the hemp fiber layer 7 is laid on a side slope, the side slope soil is fixed at the corners and the middle position of the hemp fiber layer 7, the net-shaped frame formed by straw is arranged on the hemp fiber layer 7, and the positions of the net-shaped frame 6 formed by straw at the top and the bottom of the slope are also fixed in the side slope soil; a plurality of triangular prism-shaped cells are formed inside the net-shaped frame 6, and planting grooves 5 are placed in each cell; the surface of the net-shaped frame 6 formed by the planting grooves 5 and the straws is also covered with a layer of surface soil.
As a further technical scheme, the height of the planting groove 5 is lower than that of the straw grid chamber, the size of the bottom surface of the planting groove is consistent with that of a triangular grid formed by binding straws, and the purpose of reserving a gap is mainly beneficial to plant growth.
As a further technical scheme, the fibrilia layer 7 is fixed on the side slope through a wood wedge.
As a further technical scheme, the net-shaped frame formed by the straws is fixed at the top and bottom of the slope by anchors, and the parts of the wood wedges at the corners and the middle position, which are exposed out of the ground, are sleeved in the grid chambers.
The corresponding specific implementation method is as follows:
(1) arrangement of straw net-shaped frame
And (4) selecting sorghum stalks with uniform thickness, and binding the sorghum stalks by using hemp ropes and crochet hooks. Firstly, a cross frame is built along a slope, and then a trapezoidal frame is built according to the slope and the length of the slope. The upper edge and the lower edge of the trapezoid frame form an angle of 45 degrees with the axis of the protective embankment, straws are transversely bound at intervals of 200mm, then the straws are obliquely bound to form a triangular prism-shaped lattice chamber, the height of the triangular prism-shaped lattice chamber is 80-150 mm, a gap with a rod diameter is reserved between every two adjacent rods along the height direction, and finally the concentration degree of the arrangement of the oblique rods is adjusted according to the gradient. As shown in fig. 1 and 2 below.
The straws are connected through the stubble-free hemp ropes to form triangular prism-shaped cells, the mechanical stability of the triangular structure is utilized, nodes in the diagonal direction can bear larger torque without being torn, meanwhile, the longitudinal supporting force of the triangular prism-shaped object is large, the transverse bearing force is small, the longitudinal stress generates compressive stress, the structure is strengthened theoretically, the better ground gripping performance is realized, and the cell is taken as a layer of fixed structure on the slope. Because the lignification degree of the straw is higher, the fiber is well developed, and the impact resistance is strong. Therefore, the straw grid layer can prevent the slope from being attacked by rainwater splash, and the slope soil is prevented from being washed away and lost before vegetation grows. Meanwhile, grass seeds can be prevented from scattering, or plants are washed away by rainwater in the early growth stage, and a good effect of protecting the slope and the grass is achieved. Certain gaps are reserved on the side faces of the triangular prisms and the straws in connection, so that better light and water permeability is ensured, and survival of plants is facilitated. In addition, the straw is degradable, so that the straw can be converted into natural fertilizer to react on soil after the plant grows, the natural fertilizer is reused by the plant, and the growth space of the plant root system cannot be limited.
(2) Method for making planting groove
The sorghum stalks are crushed into particles and mixed in soil, and the weight ratio of the stalk particles to the soil is 1: 3, adding a proper amount of water, and uniformly stirring to form colloid which can be bonded into a whole. And putting the mixture into a hollow triangular frustum-shaped mold, and drying and molding the mixture at a high temperature of 150-200 ℃. The height of planting groove is taken 50 ~ 100mm (must not exceed the height of straw check room), and the area of the face that lies in on the bank protection in the triangular grid that the bottom surface size and straw ligature formed is unanimous, and planting groove bottom surface size is greater than planting groove top surface size, planting groove bottom surface and bank protection contact. After forming, the non-woven geotextile is wrapped, and a proper amount of water is sprayed on the surface of the geotextile to bond the geotextile and the geotextile into a whole. The planting groove (the outside is wrapped with non-woven fabrics) is shown in the following figure 3.
The non-woven fabric has the characteristics of softness, air permeability, toughness, high degradability and the like, and is an environment-friendly reinforced material. The non-woven fabrics and the soil particles have strong adsorption capacity, can lock shallow soil, form a stable interface, prevent water and soil loss and promote plant growth. The sorghum stalks are smashed and mixed in the soil, evenly stirred and added with a proper amount of water to be bonded into a whole. Placing in a triangular table type mold with a hollow middle part, wrapping with non-woven fabric after molding, and placing in a first layer of straw chamber. The planting grooves doped with the sorghum stalk particles have a reinforcement effect on the whole structure; on the other hand, the bottom surface of planting the groove is greater than the area of top surface, and the bottom surface contacts with domatic, can with keep bigger area of contact between the domatic, difficult slippage to restrict the displacement of upper straw net better, keep higher stability. Meanwhile, the loss of the seeds which are just sowed can be avoided, and the survival rate of the plants is improved. The outer-layer non-woven fabric can exert the advantages of toughness, water permeability and good air permeability, tightly lock shallow soil on the surface, and prevent the planting groove from falling slag and dusting. After the plants grow, the planting grooves mixed with the sorghum stalk particles can be converted into natural fertilizers to be reused by the plants, and the growth of the plants can be promoted while water and soil are preserved.
(3) Fixing and arranging sequence of integral structure
After the side slope is cleaned, a layer of fibrilia cloth is laid firstly, and the fibrilia cloth is inserted into the side slope soil by wood wedges at the corners and the middle position. Fixing the slope top and the slope bottom of the straw type mesh grid chamber frame by using a special anchorage device, and sleeving the parts of the wood wedges at the corners and the middle position, which are exposed out of the ground, into the grid chamber. The fibrilia layer is arranged at the bottom layer of the slope protection structure, and can prevent the soil of the side slope from being taken away by surface runoff when the grass seeds are not completely grown in the previous period. After the vegetation, its density uprises, and the herbaceous plant root system links to each other with lower floor's fibrilia bed course, forms firm protection surface course with the winding of soil granule, can improve the infiltration and the water-absorbing capacity of bank, delays the velocity of flow of surface runoff, reduces surface runoff volume, increases time and the frequency of plant, microorganism contact pollutant, more is favorable to holding back, adsorbs, degrades the pollutant in the runoff. In addition, the fibrilia has the characteristics of stable performance, micron-sized diameter, high filtering precision, small water flow resistance and the like. The fibrilia layer is combined with the plant layer, and the plant layer with the compact and uniform upper layer can firstly play a role in filtering. Under the effect of water pressure, the fibrilia silk layer is tightly compressed, the outer layer is relatively loose, the inner layer becomes more compact under the extrusion effect, and thus, the filter material with good gradation is integrally formed, the resistance of water flow is smaller while the integral structure has higher porosity, the specific surface area of the filter material is greatly increased, the adsorption capacity is enhanced, and the pollutant interception and pollutant receiving capacity is also greatly improved. Along with the filtration, the resistance produced when rivers flow through the filtering layer further compacts the filtering layer, makes the dirt intercepting ability of whole filtering layer can make full use of.
After the upper layer structure is fixed, the molded planting groove is placed into the triangular prism lattice chamber, and because the bottom surface of the planting groove is consistent with the triangular lattice chamber in size, the edge of the bottom surface can be tightly attached to the straw and can be tightly contacted with the lower fibrilia layer; however, when placing the planting grooves, it should be noted that the placing is performed according to the mode of fig. 1, that is, one planting groove is placed in a triangular prism lattice chamber, and each planting groove is in an inverted triangle structure after planting.
After the whole structure is arranged, grass seeds can be sown in the planting groove, nutrient solution is sprayed, and finally a layer of surface soil is covered. The overall structure is shown in fig. 5; note that because some triangular prism lattice rooms are not provided with planting grooves, some soil can be placed in the triangular prism lattice rooms which are textile planting grooves.
Detailed description of the preferred embodiments
After construction of a certain hydropower station is finished, ecological management needs to be carried out on the excavated side slope, the side slope is firstly treated by using a straw type ecological slope protection method, then fibrilia cloth is paved, and the corners and the middle position of the fibrilia cloth are inserted into side slope soil by using wood wedges. The superstructure adopts the triangular prism type check room structure that the sorghum straw ligature formed, and 120mm is got to check room thickness to leave drainage and printing opacity passageway. The superstructure and the wooden wedge are nested together to form a unitary structure. The sorghum stalks are smashed and mixed in soil, evenly stirred, added with a proper amount of water to ensure that the sorghum stalks have certain cohesive force, and dried and formed in a triangular prism type die in a high-temperature environment. After the planting groove is formed, the planting groove is integrally wrapped with a layer of non-woven fabric, and is sprayed with a proper amount of water and placed into the triangular prism lattice chamber, so that the boundary of the planting groove and the triangular prism lattice chamber is in good contact. The method can effectively intercept pollutants through optimizing the structure and the composition materials, purify surface water, greatly improve the survival rate of slope plants, protect the slope while preserving soil and water, and thus, a more stable ecological system is constructed.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A straw type ecological slope protection structure is characterized by comprising a fibrilia layer, a net-shaped frame formed by straws and a planting groove, wherein the fibrilia layer is laid on a slope and fixed in slope soil at the corners and the middle positions of the fibrilia layer; a plurality of triangular prism-shaped cells are formed in the net-shaped frame, and planting grooves are arranged in the triangular prism-shaped cells at intervals; the surfaces of the planting grooves and the net-shaped frame are also covered with a layer of surface soil.
2. The ecological slope protection structure of straw type as claimed in claim 1, wherein the height of the planting groove is lower than that of the straw compartment, the size of the bottom surface is the same as the area of the surface on the slope protection in the triangular mesh formed by binding the straw, the size of the bottom surface of the planting groove is larger than that of the top surface of the planting groove, and the bottom surface of the planting groove is in contact with the slope protection.
3. The ecological slope protection structure of straw type as claimed in claim 1, wherein the fibrilia layer is fixed on the side slope by wood wedge.
4. The ecological slope protection structure of straw type as claimed in claim 3, wherein the net-shaped frame formed by straw is fixed at the top and bottom of the slope by anchors, and the wood wedges at the corners and the middle position exposed out of the ground are inserted into the cells.
5. A straw type ecological slope protection method is characterized by comprising the following steps:
step 1 manufacturing of straw mesh frame
Firstly, establishing a cross frame along a slope, and then establishing a trapezoidal frame according to the slope and the length of the slope surface; the upper and lower edges of the trapezoidal frame form an angle of 45 degrees with the axis of the protective embankment; transversely binding straws in the trapezoidal frame, and then obliquely binding the straws, so that a plurality of triangular prism-shaped cells are formed in the trapezoidal frame;
step 2, manufacturing planting grooves
Crushing sorghum stalks into particles, mixing the particles in soil, adding a proper amount of water, and uniformly stirring to enable the particles to be colloidal and be bonded into a whole; putting the mixture into a hollow triangular frustum-shaped mold, and then drying and molding the mixture; after the forming, wrapping the non-woven geotextile with the non-woven geotextile, and spraying a proper amount of water on the surface to bond the non-woven geotextile and the non-woven geotextile into a whole;
step 3, fixing and arranging the whole structure
After the side slope is cleaned, firstly, a layer of fibrilia cloth is paved, and the corner and middle positions are fixed in the side slope soil;
fixing the straw type mesh grid chamber frame on the top and the bottom of the slope; after the upper layer structure is fixed, placing the planting groove formed in the step (2) into each grid chamber, wherein the bottom surface of the planting groove and the edge of the bottom surface of the triangular grid chamber can be tightly attached to the straws and can be tightly contacted with the lower fibrilia layer;
after the whole structure is arranged, grass seeds are sown in the planting grooves, nutrient solution is sprayed, and finally a layer of surface soil is covered.
6. The method for ecological slope protection by straw according to claim 5, wherein the sequence of the step 1 and the step 2 can be exchanged.
7. The ecological slope protection method of straw type as claimed in claim 5, wherein the height of said planting groove is lower than the height of straw cell, the size of bottom surface is the same as the area of the surface on the slope protection in the triangular mesh formed by binding straw, and the size of bottom surface of said planting groove is larger than the size of top surface of said planting groove, and the bottom surface of said planting groove is in contact with the slope protection.
8. The ecological slope protection method with straw and stalk type as claimed in claim 5, wherein the hemp cloth is cut in the slope soil with wood wedges at the corners and the middle position; the slope top and the slope bottom of the straw type mesh grid chamber frame are fixed by an anchorage device, and meanwhile, the parts of the wood wedges at the corners and the middle position, which are exposed out of the ground, are sleeved in the grid chamber.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112544165A (en) * | 2020-11-10 | 2021-03-26 | 北京航天恒丰科技股份有限公司 | Vegetation slope protection structure and preparation method thereof |
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