CN111424611A - Anchor rod baffle type ecological slope protection structure based on vegetation flooding-resistant strategy - Google Patents
Anchor rod baffle type ecological slope protection structure based on vegetation flooding-resistant strategy Download PDFInfo
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- CN111424611A CN111424611A CN202010247769.9A CN202010247769A CN111424611A CN 111424611 A CN111424611 A CN 111424611A CN 202010247769 A CN202010247769 A CN 202010247769A CN 111424611 A CN111424611 A CN 111424611A
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/40—Fabaceae, e.g. beans or peas
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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
- E02B3/14—Preformed blocks or slabs for forming essentially continuous surfaces; Arrangements thereof
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- 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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Abstract
The invention discloses an anchor rod baffle type ecological slope protection structure based on a vegetation submerging-resistant strategy, which comprises vegetation planting units arranged in a step shape along a slope protection from top to bottom, wherein each vegetation planting unit comprises an anchor rod embedded in the slope protection and a baffle arranged on the slope surface of the slope protection, the baffle and the slope surface form a filling cavity, a filling soil layer is filled in the filling cavity, and the height of the baffle is greater than the thickness of the filling soil layer. When the slope runoff is caused by the surge and the rainwater, the baffle is higher than the part of the filling soil layer to form a temporary water storage layer of the protective soil body, a plurality of vegetation planting units on the slope are divided into an upper region, a middle region and a lower region according to the length of the submerging period, and corresponding vegetation is selected in the three regions. The invention effectively controls the slope runoff, reasonably matches the pioneer vegetation and effectively improves the survival rate of the slope vegetation.
Description
Technical Field
The invention relates to an ecological slope protection structure, belongs to the technical field of slope protection, and particularly relates to an anchor rod baffle type ecological slope protection structure based on a vegetation flooding-resistant strategy.
Background
The river channel high beach bank slope is an important boundary of river and navigation channels, the phenomenon of collapse and retreat of the high beach bank slope generally exists at the downstream of a large-scale hub, and the high beach bank slope which is jacked and rushed by a main current is a key protection control object in water conservancy and navigation engineering. For example, since the three gorges reservoir stores water, a series of high beach slope protection projects are implemented in the middle and lower reaches of the Yangtze river. The conservation of the high beach bank slope generally uses a dry water platform as a boundary, and an underwater bottom protection is arranged below the platform and basically in a perennial submerged state; land slope protection is arranged above the platform, is an edge zone with staggered land and water, generates a large amount of substance and energy exchange between the land and water, is also an area where various aquatic animals and plants repeatedly migrate into the breeding area, and has extremely high value for river ecology.
Early land revetment generally adopted the hard materials such as grouted stone, dry stone, cast-in-place concrete, precast concrete, and structural style such as gravity retaining wall. But the slope of the traditional inland waterway protection slope causes obvious hardening, and the slope surface is difficult to return green.
In inland waterway management in recent years, a porous ecological slope protection technology is adopted, for example, ecological structures such as steel wire meshes and hollow slope protection bricks are adopted, so that grass planting and green returning on a slope surface become possible. However, even these ecological slope protection structures still have the following problems:
in order to adapt to the characteristic that the slope is submerged seasonally, the direction of the selection and breeding idea of the slope vegetation is single, the flooding-resistant time of the vegetation is over emphasized, and the selected vegetation is mainly perennial, such as bermuda grass, verbena and the like. From the practical situation of the Yangtze river bank slope protection project, the low-elevation slope surface area with a longer submerging period and the artificially introduced flood-resistant vegetation have poor propagation effect.
The planting growth of the vegetation depends on the stability of a soil matrix, the particles of the soil matrix are extremely fine, and slope runoff formed by surging, rainwater and the like is a main factor causing the loss of the soil matrix. Although the present ecological slope protection structure mostly adopts a porous structure to increase the roughness of the slope, in engineering practice, particularly the middle lower part of the slope protection, the influence time is long due to surge, the influence of rainwater runoff is large, the pores of the slope protection structure are difficult to enrich sufficient soil for years, and migrated plants are difficult to permanently fix and expand for a long time. Even in a stepped structure, the steep rise and fall of the water level caused by waves can still cause stronger water drop and influence the stability of soil matrix, so that the middle lower part of the revetment with a longer submergence period is rarely in a stepped structure.
The ecological slope protection structure that adopts at present still need use anti-filter materials such as non-woven fabrics, and this has still hindered in fact the material energy exchange between domatic and bank slope soil body, has cut off the biological channel between the two basically.
The ecological slope protection structure adopted at present is a pore structure, a large amount of building materials such as stone, pebbles, concrete and the like are still needed, the cost is high, and the fusion degree is limited compared with the original bank slope.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing an anchor rod baffle type ecological slope protection structure based on a vegetation submerging-resistant strategy, which uses nearly natural and degradable ecological slope protection materials, reasonably matches pioneer vegetation by effectively controlling slope runoff, and improves the survival rate of slope vegetation. Meanwhile, the smoothness of materials, energy and biological channels between the luxuriant vegetation on the slope surface and the soil body on the bank slope is also kept, and the biological diversity and biomass abundance of the ecological slope protection area are greatly improved.
In order to solve the technical problems, the invention adopts the anchor rod baffle type ecological slope protection structure based on the vegetation submerging-resistant strategy, which comprises vegetation planting units arranged along a slope in a step shape from top to bottom, each vegetation planting unit comprises an anchor rod embedded in the slope and a baffle arranged on the slope surface of the slope, the baffle and the slope surface form a filling cavity, the filling cavity is filled with a filling soil layer, the height of the baffle is larger than the thickness of the filling soil layer, when slope runoff is caused by surge and rainwater, a part of the baffle higher than the filling soil layer forms a temporary water storage layer of a protective soil body, a plurality of vegetation planting units on the slope surface are divided into an upper region, a middle region and a lower region according to the length of a submerging period, and corresponding vegetation is selected in the three regions.
In a preferred embodiment of the invention, the baffles are 5-10cm higher than the upper surface of the infill soil layer.
In a preferred embodiment of the invention, the corresponding flooding period of the upper vegetation planting unit is less than 2 months, and the filling soil layer of the upper vegetation planting unit is paved with a rope net and planted with perennial grasses.
In a preferred embodiment of the present invention, at least one of bermuda grass, verbena, paspalum distichum, cyperus rotundus, eclipta alba and reed is planted on the filling soil layer of the vegetation planting unit positioned at the upper part, and at least 5 plants are transplanted per linear meter; at least one of annual herba Achilleae, herba Artemisiae Annuae, herba Leonuri, Toosendan, herba Polygoni Hydropiperis, and wild pea is planted in combination, and the number of seeds sowed in each grid of the rope net is not less than 10.
In a preferred embodiment of the invention, the vegetation planting units in the middle have a corresponding flooding period of 2-4 months, and the filling soil layer of the vegetation planting units in the middle is paved with a rope net for planting perennial herbs and annual herbs with strong flooding resistance.
In a preferred embodiment of the present invention, the perennial herbs planted in the filling soil layer of the vegetation planting units located in the middle are at least one selected from bermudagrass, verbena officinalis and paspalum distichum, the number of seeds planted in each grid of the rope net is not less than 15, and at least 5 plants are transplanted per linear meter per step; at least one of wild peas, motherwort, polygonum hydropiper and club grass is selected from the planted annual herbaceous plants, and the number of seeds sowed in each grid of the rope net is not less than 15.
In a preferred embodiment of the invention, the corresponding submergence period of the vegetation planting unit positioned at the lower part is more than 4 months, and the filling soil layer of the vegetation planting unit positioned at the lower part is paved with a rope net for planting annual herbaceous plants.
In a preferred embodiment of the present invention, the annual herbs planted on the infill soil layer of the vegetation planting unit located at the lower portion are wild peas, and the number of seeds sowed in each grid of the rope net is not less than 20; and at least one of perennial herbs paspalum vaginatum and phalaris arundinacea are matched, the number of seeds sowed in each grid of the rope net is not less than 10, and at least 5 plants are transplanted per linear meter of each step.
In a preferred embodiment of the invention, the ends of the anchor rods are fixedly connected by an X-shaped baffle fixing piece.
In a preferred embodiment of the invention, the mesh openings of the netting are 5cm × 5 cm.
The invention has the beneficial effects that: the temporary water storage layer is arranged, the soil body in the next step is effectively prevented from being scoured due to the falling of each step in the surging process, and the scouring effect of the falling of the previous step is buffered; furthermore, the method selects slope steps to plant grass based on the flood-resistant strategy of the vegetation in the natural state, keeps smooth substance, energy and biological channels between the abundant vegetation of the slope and the soil body of the bank slope, greatly improves the biological diversity and biomass abundance of the ecological slope protection area, effectively controls slope runoff, reasonably matches the pioneer vegetation and improves the survival rate of the slope vegetation.
Drawings
Fig. 1 is a schematic view of an anchor rod baffle type ecological slope protection structure based on a vegetation flood-resistant strategy according to an embodiment of the invention;
fig. 2 is an anchor rod front view of an anchor rod baffle type ecological slope protection structure based on a vegetation flood-resistant strategy according to an embodiment of the invention;
fig. 3 is a schematic structural view of an anchor rod head X-shaped baffle fixing member of an anchor rod baffle type ecological slope protection structure based on a vegetation flood-resistant strategy according to an embodiment of the invention;
fig. 4 is a top view of an anchor rod baffle type ecological slope protection structure based on a vegetation flood-resistant strategy according to an embodiment of the invention;
fig. 5 is a schematic view of the buffering effect of an anchor rod baffle type ecological slope protection structure based on a vegetation flood-resistant strategy according to an embodiment of the invention;
fig. 6 is a schematic view of an ecological slope protection structure of a prior art embodiment;
in the figure: 1-anchor rod, 2-baffle, 3-filling soil layer and 4-X-shaped baffle fixing piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention discloses an anchor rod baffle type ecological slope protection structure based on a vegetation submerging-resistant strategy, which comprises a plurality of vegetation planting units arranged along a slope protection in a step shape from top to bottom, each vegetation planting unit comprises an anchor rod (1) buried in the slope protection and a baffle plate (2) arranged on a slope surface of the slope protection, the baffle plate (2) and the slope surface form a filling cavity, a filling soil layer (3) is filled in the filling cavity, the height of the baffle plate (2) is larger than the thickness of the filling soil layer (3), the vegetation planting units are divided into an upper area, a middle area and a lower area according to the length of a submerging period according to the slope surface, a corresponding vegetation is selected in the three areas, the baffle plate (2) is higher than the upper surface of the filling soil layer (3) by 5-10 cm. and is located in the corresponding submerging period of the vegetation planting unit at the upper part by less than 2 months, a rope net is laid on the filling soil layer (3) of the vegetation planting unit at the upper part by 5-10, a rope net is planted with perennial grass, a vegetation planting net and is located in the middle part of the planting net, at least one grass planting net, the planting net is located in the planting net, the planting unit of the planting net, the planting unit is located in the planting net, the planting unit of the planting net, the planting net for the planting of the vegetation is located in the planting of the vegetation is located in the middle part of the planting net, the planting unit of the planting net, the planting of the planting unit of the planting net, the planting of the planting unit of the planting net, the planting of the vegetation is located in the planting of the planting.
Specifically, the method comprises the following steps:
(1) the invention utilizes the anchor rod to avoid the bank slope from slipping and instability. According to the mechanical properties of the soil body of the bank slope, the length, the section and the reinforcing bars of the anchor rod are determined according to actual needs through calculation.
(2) A temporary water layer is formed by the permeable baffle capable of storing water for a short time, elutriation caused by water drop of an upper step is effectively buffered, and the baffle resists river erosion. The slope surface is provided with a baffle, the baffle and the slope surface form a cavity with a triangular cross section, and soil is filled in the cavity to form a step shape. The setting of baffle step can slow down the domatic runoff, resists the rivers and eluriates, simultaneously, for the slumping that the drop that control steps at each level appear at the surge in-process causes the eluriation of the soil body in the next stage step (see figure 1), the baffle adopts the bamboo springboard, and the baffle edge is higher 5 ~ 10cm than the soil horizon surface, and in the surge in-process, this setting can ensure to form the guard water layer, effectively cushions the scouring effect of the drop of last step (see figure 2). Meanwhile, the bamboo springboard is composed of bamboo chips, gaps among the bamboo chips are permeable to water, and after the water level falls, the protective water layer is also emptied, so that the slope surface waterlogging state cannot be caused.
(3) And fixing the baffle by using an X-shaped baffle fixing piece at the head part of the anchor rod. Trepanning is reserved to X type baffle mounting, and is whole with the stock concatenation, behind the baffle embedding X type baffle mounting, through filling out, can satisfy the stability requirement.
(4) The hemp rope net covers the surface layer of the step, and the surface runoff is further controlled to be elutriated and brushed. The hemp rope has strong corrosion resistance and is made of pure natural materials, the hemp rope net can protect surface soil in the steps for a long time, and the grid provides enough space for vegetation growth.
(5) Selecting slope steps to plant grass based on a flood-resistant strategy of vegetation in a natural state, and the big idea is as follows: annual herbage adaptive to the fluctuation of water level in year is introduced, and the characteristics of mature and reserved seeds of the annual herbage before flood are utilized to enrich the vegetation diversity and coverage of the middle and lower parts of the slope. The specific strategy is as follows: aiming at the hydrological features of the river reach where the revetment is located, the slope is divided into an upper, a middle and a lower strip-shaped areas according to the length of the submerging period, the upper portion corresponds to the submerging period less than 2 months, the middle portion corresponds to the submerging period from 2 months to 4 months, and the lower portion corresponds to the submerging period more than 4 months. The upper region is mainly made of perennial herbs, and at least one of bermudagrass, verbena, paspalum distichum, cyperus rotundus, eclipta prostrata and reed is selected; at least one of annual herb of herba Achilleae, herba Artemisiae Annuae, herba Leonuri, cortex Toosendan, herba Polygoni Hydropiperis, and herba Pileae Scriptae. In the middle area, strong flooding-resistant perennial herbs and annual herbs are planted, and the perennial herbs are at least one of bermudagrass, verbena and paspalum distichum; the annual herb is selected from at least one of wild pea, motherwort, polygonum hydropiper and club grass. In the lower region, annual herbs are mainly used, wild peas are mainly selected to save deserts, and at least one of perennial herbs paspalum vaginatum and phalaris arum is matched.
For general conditions of middle and lower reaches of the Yangtze river, after underwater bottom protection is completed on a planned-to-be-protected high beach slope, the specific implementation mode of land slope protection is as follows:
(1) anchor rod design: determining a sliding surface according to the slope of the slope and the mechanical characteristics of the soil body, and designing the anchor rod according to the technical specification GB 50330-2013 of building slope engineering. According to the requirement of slope anti-slip damage, the anchor rod type is determined, the anchor rod anchoring section, the free section and the outer anchor head length are calculated, the anchor rod strength and the longitudinal and transverse spacing are designed according to the step setting condition, namely the anchor rod spacing is large, the anchor rod strength is correspondingly improved, and vice versa.
(2) Taking a 30cm high step (soil body step height) as an example, the width of the baffle is 40cm, correspondingly, each support arm of the X-shaped baffle fixing piece at the head of the anchor rod forms a diagonal line with the side length of 40cm square, the section of each support arm is recommended to be 4cm × 4cm, the grade of a central reinforcing bar is HRB400, a sleeve hole spliced with the anchor rod is reserved at the central cross point of the X-shaped baffle fixing piece with the diameter of 5mm, and the size of the sleeve hole is determined according to the actual section size of the anchor rod.
(3) Anchoring a bank slope: and after the bank slope is cut according to the designed slope, the anchor rod is anchored into the slope surface through piling construction. And assembling an X-shaped baffle fixing piece, installing a baffle, filling slope cutting waste soil in a triangular cavity formed by the baffle and the slope surface, and properly compacting. The baffle adopts bamboo springboard, and the width is confirmed according to the step height. The soil layer surface of each step is about 5-10cm lower than the edge of the baffle, the adjacent channel or the bank slope area with strong wind waves takes a large value, the area with low surge intensity and frequency takes a small value, and the main flow of a large river such as the Yangtze river is recommended to take 10 cm.
(4) And (3) rope net installation, namely selecting a hemp rope with the diameter of 5mm, weaving and paving the hemp rope into a rope net with the mesh aperture of 5cm × 5cm, and embedding the hemp rope with the depth of more than 10cm at the edge of the step.
(5) Introducing and maintaining pioneer vegetation:
and (4) counting the water level process of at least 10 years of the river reach where the revetment is located, respectively counting the water levels which are submerged for 2 months and 4 months, and recording the water levels as Z1 and Z2. The area with the elevation larger than Z1 is the upper area of the revetment, the area with the elevation larger than Z2 and smaller than Z1 is the middle area of the revetment, and the area with the elevation smaller than Z2 is the lower area of the revetment.
At least one of bermuda grass, verbena, paspalum distichum, rhizoma cyperi, eclipta prostrata and reed is selected in the upper area of the revetment, the number of seeds sowed on each hemp rope grid is not less than 20, and at least 5 plants are transplanted per linear meter of each step. At least one of annual herb of pseudostellaria heterophylla, artemisia annua, motherwort herb, torilis fructus, polygonum hydropiper and wild pea is matched, and the number of seeds sowed in each hemp rope grid is not less than 10.
And (3) selecting at least one of bermudagrass, verbena and paspalum distichum from perennial herbs in the middle area of the slope protection, wherein the number of seeds sowed on each hemp rope grid is not less than 15, and at least 5 plants are transplanted per linear meter of each step. At least one of wild peas, motherwort, polygonum hydropiper and club grass is selected from the annual herbs, and the number of seeds sowed in each hemp rope grid is not less than 15.
In the lower region of the revetment, annual herbs are mainly used, wild peas are selected in a key mode, and the number of seeds sowed on each hemp rope grid is not less than 20. At least one of perennial herbs paspalum distichum and phalaris arundinacea are matched, the number of seeds sowed in each hemp rope grid is not less than 10, and at least 5 plants are transplanted per linear meter of each step.
The slope vegetation should be sown in 10 to 11 months. After the first round of seeding, timely reseeding is carried out within 10 to 20 days according to the actual germination condition, so as to ensure the vegetation abundance.
(6) And (3) maintaining the slope surface after flood: as the survival pressure of the slope vegetation of the new bank protection slope is higher in the first flood season, the integrity and the vegetation abundance of the rope net should be checked in time after the first year flood, and the targeted restoration treatment should be performed at the positions where the soil body loss is obvious, the integrity of the rope net is damaged and the vegetation abundance is greatly reduced.
It should be understood that the above are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the scope of the present invention.
Claims (10)
1. The utility model provides an ecological slope protection structure of stock baffle formula based on resistant strategy of flooding of vegetation, includes that it plants the unit to be a plurality of vegetation that the echelonment was arranged from top to bottom along the bank protection, its characterized in that: every vegetation plants unit including writing anchor rod (1) of burying underground in the bank protection and setting up baffle (2) on the slope surface of bank protection, baffle (2) and domatic formation fill the cavity, fill in the cavity and be filled by filling soil layer (3), the height of baffle (2) is greater than the thickness of filling soil layer (3) leads to domatic runoff to take place when surge, rainwater, baffle (2) are higher than fill temporary water storage layer (5) that soil layer (3)'s part will form the protection soil body, plant the unit according to submerging period length with domatic a plurality of vegetation and divide into upper, middle, lower three region, the corresponding vegetation of seed selection in three region.
2. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy, which is characterized in that: the baffle (2) is higher than the upper surface of the filling soil layer (3) by 5-10cm, and when slope runoff is caused by surging and rainwater, a temporary water storage layer (5) for protecting soil is formed.
3. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy, which is characterized in that: the corresponding submergence period of the vegetation planting units positioned on the upper portion is less than 2 months, and rope nets and perennial herbaceous plants are paved on the filling soil layers (3) of the vegetation planting units positioned on the upper portion.
4. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy, which is characterized in that: at least one of bermuda grass, verbena officinalis, paspalum distichum, nutgrass galingale rhizome, eclipta prostrata and reed is planted on a filling soil layer (3) of the vegetation planting unit positioned at the upper part, and at least 5 plants are transplanted per linear meter; at least one of annual herba Achilleae, herba Artemisiae Annuae, herba Leonuri, Toosendan, herba Polygoni Hydropiperis, and wild pea is planted in combination, and the number of seeds sowed in each grid of the rope net is not less than 10.
5. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy, which is characterized in that: the corresponding flooding period of the vegetation planting unit positioned in the middle is 2-4 months, and the filling soil layer (3) of the vegetation planting unit positioned in the middle is paved with a rope net for planting perennial herbs and annual herbs with strong flooding resistance.
6. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy, which is characterized in that: perennial herbs planted in a filling soil layer (3) of the vegetation planting unit positioned in the middle part at least select one of bermudagrass, verbena and paspalum distichum, the number of seeds sowed in each grid of the rope net is not less than 15, and at least 5 plants are transplanted per linear meter of each step; at least one of wild peas, motherwort, polygonum hydropiper and club grass is selected from the planted annual herbaceous plants, and the number of seeds sowed in each grid of the rope net is not less than 15.
7. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy, which is characterized in that: the corresponding submergence period of the vegetation planting unit positioned at the lower part is more than 4 months, and the rope net is paved on the filling soil layer (3) of the vegetation planting unit positioned at the lower part to plant annual herbs.
8. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy, which is characterized in that: annual herbs planted on a filling soil layer (3) of the vegetation planting unit positioned at the lower part are wild peas, and the number of seeds sowed in each grid of the rope net is not less than 20; and at least one of perennial herbs paspalum vaginatum and phalaris arundinacea are matched, the number of seeds sowed in each grid of the rope net is not less than 10, and at least 5 plants are transplanted per linear meter of each step.
9. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy, which is characterized in that: the end part of the anchor rod (1) is fixedly connected with the baffle (2) through an X-shaped baffle fixing piece (4).
10. The anchor rod baffle type ecological slope protection structure based on the vegetation flood-resistant strategy as claimed in any one of claims 3-9, wherein the mesh aperture of the rope net is 5cm × 5 cm.
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