Hydro-fluctuation belt slope protection system and construction method thereof

Abstract

The invention discloses a hydro-fluctuation belt slope protection system and a construction method thereof, and relates to the technical field of ecological restoration. The hydro-fluctuation belt slope protection system comprises ecological bags and planting belts, wherein the ecological bags are staggered and stacked layer by layer along the slope surface of the hydro-fluctuation belt, and the planting belts are laid on the ecological bags. Wherein an upper-layer space and a lower-layer space are formed in the ecological bag, the upper-layer space is filled with a first matrix with high ventilation pores, and the lower-layer space is filled with a second matrix with high water-containing pores; the planting belts are used for laying plant seeds on the ecological bags, so that plants grow on the slope surface of the hydro-fluctuation belt. According to the hydro-fluctuation belt slope protection system, the ecological bags internally provided with the upper-layer space and the lower-layer space are adopted, accumulated water is rapidly drained through the upper-layer space when the hydro-fluctuation belt is flooded, water is supplemented through the lower-layer space when the hydro-fluctuation belt is dry, and the adaptability of plants in short-time dry-wet circulation of the hydro-fluctuation belt is improved; therefore, the problems of low survival rate and poor growth of plants can be solved, and the ecological restoration effect of the hydro-fluctuation belt is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological restoration, and particularly relates to a slope protection system for the water-level-fluctuation zone and a construction method thereof. Background Art

[0002] The water-level-fluctuation zone is an area where aquatic and terrestrial ecosystems intersect, with dual attributes of water area and land. The long-term or periodic rise and fall of the water level causes it to be repeatedly submerged and exposed, and it is a special seasonal wetland ecosystem. Under natural conditions, adverse factors such as rainfall and water flow scouring will cause problems such as the loss of planting soil and serious river channel siltation in the water-level-fluctuation zone.

[0003] There are various ecological restoration technologies for the water-level-fluctuation zone, including geocell, grass-planting block type slope protection, stone cage filled with stones type slope protection, articulated ecological slope protection, shotcrete vegetation slope protection, and ecological bag type slope protection. The ecological bag slope protection is a slope protection formed by stacking geotextile mesh bags on the bank slope. Planting soil and grass seeds are filled into the bags, and after the plants mature, the roots penetrate through the bag body and tightly connect the geotextile bags together to protect the bank slope. Since the ecological bag is a flexible structure and the bag body has high flexibility, it can be applied to bank slopes with uneven slopes. And compared with other technologies, the ecological bag type slope protection restoration technology can also take into account the requirements of cost and aesthetics.

[0004] The ecological bag restoration technology usually places plant seeds in the bags and relies on plant growth to restore the water-level-fluctuation zone. However, due to the alternating state of the rising and falling water level in the water-level-fluctuation zone, the plants are also in an alternating state of being flooded or drought, resulting in a decrease in the survival rate of the plants and poor growth, and the effect of ecological restoration in the water-level-fluctuation zone is poor. Therefore, there is an urgent need for a slope protection system that is more suitable for the ecological restoration process of the water-level-fluctuation zone and can improve the problem of difficult plant growth. Summary of the Invention

[0005] The main purpose of the present invention is to propose a slope protection system for the water-level-fluctuation zone and a construction method thereof, aiming to solve the problems of low survival rate and poor growth of plants and poor ecological restoration effect existing in the ecological restoration process of the water-level-fluctuation zone.

[0006] To achieve the above purpose, the present invention proposes a slope protection system for the water-level-fluctuation zone, including ecological bags stacked layer by layer and staggered along the slope surface of the water-level-fluctuation zone, and a planting belt laid on the ecological bags; wherein, an upper space and a lower space are formed inside the ecological bag, the upper space is filled with a first substrate with a high ventilation pore rate, and the lower space is filled with a second substrate with a high water-containing pore rate; the planting belt is used to lay plant seeds on the ecological bags so that plants grow on the slope surface of the water-level-fluctuation zone.

[0007] In an embodiment, a plurality of ecological bag layers are formed on the slope surface of the water-level-fluctuation zone from the bottom to the top of the slope, and each ecological bag layer includes a plurality of ecological bags arranged along the length direction of the slope surface of the water-level-fluctuation zone; wherein:

[0008] Any two adjacent ecological bags in each of the ecological bag layers are connected by a first fixing member; and / or,

[0009] Each of the ecological bag layers is fixed to the slope of the drawdown zone by a first fixing member.

[0010] In one embodiment, any two adjacent ecological bags in each of the ecological bag layers are connected by a first fixing member, and the first fixing member includes a cable tie; each of the ecological bag layers is fixed to the slope of the drawdown zone by a first fixing member, and the first fixing member includes at least one soil nail.

[0011] In one embodiment, connection holes penetrating in the up-and-down direction are respectively provided at the four corners of each of the ecological bags; in each of the ecological bag layers:

[0012] Any two adjacent ecological bags partially overlap, so that two of the connection holes close to the bottom of the slope communicate in the up-and-down direction to form a first installation hole, and two of the connection holes close to the top of the slope communicate in the up-and-down direction to form a second installation hole;

[0013] The cable tie connects any two adjacent ecological bags through the first installation hole, and the soil nail fixes the ecological bag layer to the slope of the drawdown zone through the second installation hole.

[0014] In one embodiment, the first substrate includes at least one of a first substrate material and a second substrate material; wherein, the first substrate material includes sandy soil, the second substrate material includes loam and straw, and the volume ratio of loam to straw in the second substrate material is (7:3) to (8:2); and / or,

[0015] The second substrate includes at least one of a third substrate material and a fourth substrate material; wherein, the third substrate material includes loam and sawdust, the fourth substrate material includes loam and mushroom residue, the volume ratio of loam to sawdust in the third substrate material is (6:4) to (8:2), and the volume ratio of loam to mushroom residue in the fourth substrate material is (6:4) to (8:2).

[0016] In one embodiment, the planting belt includes two non-woven fabric layers arranged in the up-and-down direction, and coated plant seeds laid between the two non-woven fabric layers.

[0017] In one embodiment, the plant seeds are laid between the two non-woven fabric layers through an adhesive.

[0018] In one embodiment, the plant seeds include at least one of sedge seeds, water smartweed seeds, phalaris arundinacea seeds, dock seeds, spring smartweed seeds, and polygonum lapathifolium seeds; and / or,

[0019] The planting belt is fixed to the ecological bag through a third fixing member, and the third fixing member includes soil nails.

[0020] The present invention provides a construction method for the slope protection system of the drawdown zone, comprising the following steps:

[0021] S1. Provide ecological bags and planting belts;

[0022] S2. Stack the ecological bags layer by layer in a staggered manner on the slope surface of the drawdown zone;

[0023] S3. Lay the planting belt on the ecological bag;

[0024] S4. Maintain the plants.

[0025] In one embodiment, step S1 includes: S10. Coating carex seeds, polygonum hydropiper seeds, phalaris arundinacea seeds, rumex acetosa seeds, persicaria longiseta seeds and persicaria lapathifolia seeds to obtain coated plant seeds; spraying an adhesive on a layer of non-woven fabric, mixing the coated plant seeds evenly and sowing them on the non-woven fabric, and then covering another layer of non-woven fabric to obtain a planting belt; wherein, the coating treatment of the carex seeds and polygonum hydropiper seeds includes: mixing a cytokinin solution and plant seeds for coating, and forming a film through a film-forming agent after drying; the coating treatment of the phalaris arundinacea seeds, rumex acetosa seeds, persicaria longiseta seeds and persicaria lapathifolia seeds includes: mixing a coating agent and plant seeds for pellet coating.

[0026] In one embodiment, step S1 includes: S11. The ecological bag is made of polypropylene fiber, and connection holes are respectively provided at parts outside the four-corner encapsulation lines. The inside is divided into an upper space and a lower space by a spacer layer. The upper space is filled with a first substrate with a high aeration porosity, and the lower space is filled with a second substrate with a high water-containing porosity to obtain an ecological bag.

[0027] In one embodiment, step S2 includes: cleaning and leveling the slope surface of the drawdown zone, stacking the ecological bags layer by layer in a staggered manner along the slope surface of the drawdown zone, overlapping and connecting the two connection holes of adjacent two ecological bags near the bottom of the slope with a tie, and overlapping and fixing the two connection holes of adjacent two ecological bags near the top of the slope with soil nails to the slope surface of the drawdown zone.

[0028] In one embodiment, step S3 includes: laying the planting belt on the ecological bag and fixing it with soil nails.

[0029] In the technical solution of the present invention, the drawdown zone slope protection system includes ecological bags stacked layer by layer and offset on the drawdown zone slope surface, and a planting zone laid on the ecological bags. By forming an upper space and a lower space inside the ecological bags, filling the upper space with a first substrate having a high ventilation porosity and filling the lower space with a second substrate having a high water content porosity, the ecological bags can quickly drain accumulated water through the upper space after being flooded, and replenish water through the lower space during drought, thereby improving the adaptability of plants in the short-term wet-dry cycle of the drawdown zone, improving the problems of low plant survival rate and poor growth, and further improving the ecological restoration effect of the drawdown zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0031] Figure 1 FIG. 9 is a schematic side view structure diagram of an embodiment of the drawdown zone slope protection system provided by the present invention;

[0032] Figure 2 is Figure 1 the layout structure diagram of the ecological bags in

[0033] Figure 3 is Figure 1 the structure diagram of the ecological bag in

[0034] Figure 4 is Figure 1 the structure diagram of the planting zone in

[0035] Explanation of the reference numerals in the drawings:

[0036] 100, drawdown zone slope protection system; 1, ecological bag; 11, upper space; 12, lower space; 13, first fixing member; 14, second fixing member; 15, connection hole; 16, spacer layer; 2, planting zone; 21, non-woven fabric layer; 22, coated plant seeds; 3, drawdown zone.

[0037] The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0041] The drawdown zone is an area where aquatic and terrestrial ecosystems intersect, with dual attributes of water area and land. The long-term or periodic water level rise and fall cause it to be repeatedly submerged and exposed, and it is a special seasonal wetland ecosystem. In the natural state, adverse factors such as rainfall and water flow scouring will cause problems such as the loss of planting soil and serious siltation in the drawdown zone.

[0042] Ecological bag slope protection is a kind of slope protection formed by stacking geotextile mesh bags on the bank slope. The planting soil and grass seeds are filled into the bags. After the plants mature, the roots penetrate through the bag body and tightly connect the geotextile bags together to protect the bank slope. Since the ecological bag is a flexible structure and the bag body has high flexibility, it can be applied to bank slopes with uneven slopes. And compared with other ecological technologies, the ecological bag type slope protection restoration technology can take into account both cost and aesthetic requirements and has irreplaceable advantages.

[0043] However, during the ecological bag restoration process, due to the rise and fall of the water level, the plants are in an alternating state of being flooded or drought-stricken, resulting in a decrease in the survival rate of the plants and poor growth. These ecological problems make the restoration of the water-level-fluctuation zone face problems such as harsh plant growth conditions and poor restoration effects. Therefore, there is an urgent need for a slope protection system that is more suitable for the ecological restoration of the water-level-fluctuation zone and can improve the problem of difficult plant growth.

[0044] In view of this, the present invention proposes a slope protection system 100 for the water-level-fluctuation zone.

[0045] Please refer to Figures 1 to 3 , in an embodiment of the present invention, the slope protection system 100 for the water-level-fluctuation zone includes ecological bags 1 stacked layer by layer and staggered along the slope surface of the water-level-fluctuation zone, and a planting belt 2 laid on the ecological bags 1; wherein, an upper space 11 and a lower space 12 are formed inside the ecological bag 1, a first substrate with a high ventilation pore rate is filled in the upper space 11, and a second substrate with a high water-containing pore rate is filled in the lower space 12; the planting belt 2 is used to lay plant seeds on the ecological bag 1 so that plants grow on the slope surface of the water-level-fluctuation zone 3.

[0046] In the technical solution of the present invention, the slope protection system 100 for the water-level-fluctuation zone includes ecological bags 1 stacked layer by layer and staggered along the slope surface of the water-level-fluctuation zone and a planting belt 2 laid on the ecological bags 1. By forming an upper space 11 and a lower space 12 inside the ecological bag 1, filling a first substrate with a high ventilation pore rate in the upper space 11, and filling a second substrate with a high water-containing pore rate in the lower space 12, the ecological bag 1 can quickly drain the accumulated water through the upper space 11 after being flooded, and replenish water through the lower space 12 during drought, thereby improving the adaptability of plants in the short-term wet-dry cycle of the water-level-fluctuation zone 3, improving the problems of low plant survival rate and poor growth, and further improving the ecological restoration effect of the water-level-fluctuation zone 3. Among them, stacking the ecological bags 1 in a staggered manner can significantly improve the stability of the entire slope protection system 100 for the water-level-fluctuation zone. By locking with each other between the upper and lower layers, better structural support is provided, reducing the risk of the entire system sliding on the slope surface of the water-level-fluctuation zone 3.

[0047] Please refer to Figure 1 and Figure 2 , in an embodiment of the present invention, a plurality of ecological bag layers are formed on the slope surface of the water-level-fluctuation zone from the bottom to the top of the slope, and each ecological bag layer includes a plurality of ecological bags 1 arranged along the length direction of the slope surface of the water-level-fluctuation zone 3; wherein:

[0048] Any two adjacent ecological bags 1 in each ecological bag layer are connected by a first fixing member 13.

[0049] By connecting any two adjacent ecological bags 1 in each of the ecological bag layers through the first fixing member 13, the relative movement between individual ecological bags can be reduced, forming an integral structure, which is beneficial to enhancing the structural stability of the ecological bag layer and better resisting external pressure and shear force.

[0050] Please refer to Figure 1 and Figure 2 In the embodiment of the present invention, each of the ecological bag layers is fixed to the slope surface of the drawdown zone 3 through the second fixing member 14.

[0051] To improve the long-term stability of the drawdown zone slope protection system 100, enable the ecological bag layer to be firmly laid on the slope surface of the drawdown zone 3, and reduce the probability of the ecological bag layer sliding on the slope surface, the technical solution of the present invention fixes each ecological bag layer to the slope surface of the drawdown zone 3 through the second fixing member 14.

[0052] Further, in the embodiment of the present invention, any two adjacent ecological bags 1 in each of the ecological bag layers are connected through the first fixing member 13, and the first fixing member 13 includes a tie strap; each of the ecological bag layers is fixed to the slope surface of the drawdown zone 3 through the second fixing member 14, and the second fixing member 14 includes at least one soil nail.

[0053] The technical solution of the present invention does not limit the specific materials or fixing methods of the first fixing member 13 and the second fixing member 14. The first fixing member 13 can fix the adjacent ecological bags 1, and the second fixing member 14 can fix the ecological bag layer to the slope surface of the drawdown zone 3, which is convenient for construction and meets the requirements of structural strength. In an embodiment of the present invention, on the premise of meeting the stability and durability of the slope protection system, considering cost and installation convenience, tie straps are used to connect adjacent ecological bags 1 together, and soil nails are selected as the second fixing member 14 to fix the ecological bags 1 to the slope surface of the drawdown zone 3. Moreover, the soil nails can also provide additional supporting force and anti-slip ability to prevent large-scale soil sliding. It should be noted that the technical solution of the present invention also does not limit the number of tie straps and soil nails, as long as the strength requirements for construction are met, and at least one soil nail is used to fix each ecological bag 1.

[0054] Further, please refer to Figure 2 and Figure 3 In the embodiment of the present invention, connection holes 15 penetrating in the up and down directions are respectively provided at the four corners of each of the ecological bags 1; in each of the ecological bag layers:

[0055] Any two adjacent ecological bags 1 partially overlap, so that the two connection holes 15 near the bottom of the slope are communicated in the up and down directions to form a first installation hole, and the two connection holes 15 near the top of the slope are communicated in the up and down directions to form a second installation hole;

[0056] The cable tie connects any two adjacent ecological bags 1 through the first mounting hole, and the soil nail fixes the ecological bag layer to the slope of the drawdown zone 3 through the second mounting hole.

[0057] Connection holes 15 penetrating in the vertical direction are respectively arranged at the four corners of each ecological bag 1, which can quickly locate the overlapping area of adjacent ecological bags 1, so that the connection holes 15 of two ecological bags 1 close to the bottom of the slope communicate in the vertical direction to form a first mounting hole, and the connection holes 15 of two ecological bags 1 close to the top of the slope communicate in the vertical direction to form a second mounting hole. The inner diameters of the first mounting hole and the second mounting hole are not less than the diameter of the cable tie and not less than the diameter of the soil nail. With such a setting, it is convenient for the cable tie to connect any two adjacent ecological bags 1 through the first mounting hole, and it is convenient for the soil nail to fix the ecological bag layer to the slope of the drawdown zone 3 through the second mounting hole, so that multiple ecological bags 1 form a stable whole, enhancing the stability and durability of the drawdown zone slope protection system. It should be noted that the connection holes 15 are arranged at the four corners outside the encapsulation line of the ecological bag 1, so the leakage of the first substrate and the second substrate will not be caused. The shape of the connection holes 15 is not limited, for example, it can be a circular hole, a square hole, etc.

[0058] In the embodiment of the present invention, the first substrate includes at least one of a first substrate material and a second substrate material; wherein, the first substrate material includes sandy soil, and the second substrate material includes loam and straw, and the volume ratio of loam to straw in the second substrate material is (7:3) to (8:2).

[0059] Filling the first substrate in the ecological bag 1 can enable the ecological bag 1 to quickly drain water after the upper layer is flooded, and the plant roots can breathe. The fact that the first substrate includes at least one of a first substrate material and a second substrate material means that the first substrate can be any one of the first substrate material and the second substrate material, or can be both the first substrate material and the second substrate material. Among them, the first substrate material includes sandy soil, and the second substrate material includes loam and straw. Sandy soil contains a relatively high proportion of sand grains and has relatively large particles. Using sandy soil alone can also provide good air permeability and water permeability; compared with sandy soil, the proportion of sand grains in loam decreases and the particles become relatively smaller, and the air permeability and water permeability will become worse. Utilizing the characteristic that straw has more air voids, using loam and straw in combination can adjust the number of air voids to meet the requirements of the first substrate for air permeability and water permeability. When the volume ratio of loam to straw in the second substrate material is set to (7:3) to (8:2), the number of air voids in the first substrate is appropriate, and the air ventilation and drainage effects are better. Within this range, the volume ratio of loam to straw can be 2.5:1, 3:1, 3.5:1, 4:1.

[0060] In an embodiment of the present invention, the second substrate includes at least one of a third substrate material and a fourth substrate material; wherein, the third substrate material includes loam and sawdust, the fourth substrate material includes loam and mushroom residue, the volume ratio of loam to sawdust in the third substrate material is (6:4) to (8:2), and the volume ratio of loam to mushroom residue in the fourth substrate material is (6:4) to (8:2).

[0061] Filling the second substrate in the ecological bag 1 can retain a certain amount of moisture, which can provide water required for plant growth during subsequent drought. The second substrate including at least one of the third substrate material and the fourth substrate material means that the second substrate can be any one of the third substrate material and the fourth substrate material, or can be both the third substrate material and the fourth substrate material. Sawdust and mushroom residue have more water storage pores, which is beneficial to water accumulation. Adding loam to sawdust or mushroom residue can adjust the relative number of water storage pores. When the second substrate includes loam and sawdust, the volume ratio of loam to sawdust is set to (6:4) to (8:2). Within this range, the volume ratio of loam to sawdust can be 1.5:1, 2:1, 2.5:1, 3:1, 3.5:1, 4:1. When the second substrate includes loam and mushroom residue, the volume ratio of loam to mushroom residue is set to (6:4) to (8:2). Within this range, the volume ratio of loam to mushroom residue can be 1.5:1, 2:1, 2.5:1, 3:1, 3.5:1, 4:1.

[0062] Please refer to Figure 4 , in an embodiment of the present invention, the planting belt 2 includes two non-woven fabric layers 21 arranged in the up and down direction, and coated plant seeds 22 laid between the two non-woven fabric layers 21.

[0063] Coating the seeds can improve the survival rate, growth rate and stress resistance of plant seeds. The thin non-woven fabric does not affect the germination and growth of plants. Placing the coated plant seeds 22 between the two non-woven fabric layers 21, on the one hand, uses the non-woven fabric to fix the plant seeds, reducing the possibility of the plant seeds being carried away, and on the other hand, covers the seeds with the non-woven fabric layer, reducing water evaporation and playing a role in soil moisture conservation.

[0064] In an embodiment of the present invention, the plant seeds are laid between the two non-woven fabric layers 21 through an adhesive.

[0065] Using an adhesive to stick the plant seeds in the middle of the two non-woven fabric layers 21 has good fixing effect, convenient construction and does not affect the germination and growth of plants.

[0066] In an embodiment of the present invention, the plant seeds include at least one of sedge seeds, water smartweed seeds, phalaris arundinacea seeds, dock seeds, spring smartweed seeds, and polygonum lapathifolium seeds.

[0067] The plant seeds can be conventionally used by those skilled in the art. In the technical solution of the present invention, the plant seeds can be selected from at least one of sedge, water smartweed, phalaris arundinacea, dock, spring smartweed, and polygonum lapathifolium. These plants are mainly distributed in the drawdown zone of rivers or lakes and have strong adaptability to the drawdown zone environment.

[0068] In an embodiment of the present invention, the planting belt 2 is fixed to the ecological bag 1 by a third fixing member (not shown in the figure), and the third fixing member includes soil nails.

[0069] After laying the planting belt 2 on the ecological bag 1, the planting belt 2 is fixed to the ecological bag 1 by a third fixing member to prevent the planting belt 2 from loosening or moving due to factors such as the rise and fall of the water level, rainfall, and water flow scouring. In an embodiment of the present invention, the third fixing member is a soil nail.

[0070] The present invention also provides a construction method for a drawdown zone slope protection system, and the construction method for the drawdown zone slope protection system includes the following steps:

[0071] S1. Provide the ecological bag 1 and the plant belt 2;

[0072] S2. Stack the ecological bags 1 layer by layer in a staggered manner on the drawdown zone slope surface;

[0073] S3. Lay the planting belt 2 on the ecological bag 1;

[0074] S4. Maintain the plants.

[0075] The construction method for the drawdown zone slope protection system provided by the present invention uses the self-made ecological bag 1 and the plant belt 2. By stacking the ecological bags 1 layer by layer in a staggered manner on the drawdown zone slope surface, and then laying the planting belt 2 on the ecological bag 1, and maintaining it during the germination to seedling stage of the seeds, the construction difficulty is small. By using the construction method for the drawdown zone slope protection system provided by the present invention, the drawdown zone can be ecologically restored, the problems of low plant survival rate and poor growth can be improved, and further the ecological restoration effect of the drawdown zone can be improved.

[0076] In an embodiment of the present invention, step S1 includes: S10. Coating sedge seeds, water smartweed seeds, phalaris arundinacea seeds, dock seeds, spring smartweed seeds, and polygonum lapathifolium seeds to obtain coated plant seeds; spraying an adhesive on a layer of non-woven fabric, mixing the coated plant seeds evenly and sowing them on the non-woven fabric, and then covering another layer of non-woven fabric to obtain the planting belt 2.

[0077] In the technical solution of the present invention, the plant seeds include Carex tristachya, Polygonum hydropiper, Phalaris arundinacea, Rumex acetosa, Polygonum persicaria, and Polygonum lapathifolium. To improve the survival rate, growth rate, and stress resistance of plant seeds, an adhesive is used to coat the seeds with substances such as micronutrients, plant growth regulators, drought-resistant materials, and fillers.

[0078] In an embodiment of the present invention, to treat the difficult-to-germinate Carex tristachya seeds and Phalaris arundinacea seeds, a suspension coating technology is used for coating. The suspension coating technology refers to soaking the seeds in a suspension containing coating materials, and then making the coating materials adhere to the seed surface through steps such as drying. The suspension coating technology uses wet grinding of active ingredients and some inactive ingredients and mixes them with other ingredients to form a suspension dispersion system. It utilizes atomized coating, and the coating method is thinner, which can reduce the problem of reduced germination rate caused by coating, and has the characteristics of simple production process and good coating effect.

[0079] In an embodiment of the present invention, the steps of coating using the suspension coating technology include: preparing a 6-BA solution of cytokinin with a concentration of 200 mg / L, coating the seeds according to a drug-seed ratio of 1:3, and forming a film after the seeds are dried; among them, the film-forming agent formula is polyvinyl alcohol with a mass concentration of 3%, urea with a mass concentration of 0.1%, naphthaleneacetic acid with a mass concentration of 0.005%, and polyacrylamide with a mass concentration of 0.1%. When treating Carex tristachya seeds and Phalaris arundinacea seeds, the plant seeds can be coated separately, or multiple plant seeds can be treated simultaneously.

[0080] It should be noted that 6-BA, also known as 6-benzylaminopurine, is a cytokinin that has the effect of promoting the germination of plant seeds and can improve the germination of Carex tristachya and Phalaris arundinacea; polyvinyl alcohol is mainly used as a film-forming material; the main role of urea is to promote plant growth in the initial stage of plant growth; naphthaleneacetic acid can improve the drought resistance of plants; polyacrylamide, as a high-molecular substance with water absorption ability, can provide water during the seed germination period.

[0081] In an embodiment of the present invention, the pelleting coating technology is used to coat Phalaris arundinacea seeds, Rumex acetosa seeds, Polygonum persicaria seeds, and Polygonum lapathifolium seeds. The pelleting coating technology refers to coating one or more layers of substances on the seed surface to form a spherical or nearly spherical particle. This method can make the size and shape of the seeds more uniform, facilitating mechanized sowing. The germination rates of Polygonum hydropiper seeds, Rumex acetosa seeds, Polygonum persicaria seeds, and Polygonum lapathifolium seeds are high. By adding fertilizers, growth-promoting substances, and water-retaining substances through pelleting coating, the growth rate and drought resistance of the seeds can be increased.

[0082] In an embodiment of the present invention, the step of pelletizing and coating Phalaris arundinacea seeds, Rumex acetosa seeds, Persicaria longiseta seeds, and Persicaria lapathifolia seeds includes: mixing a coating agent and plant seeds and performing pelletizing and coating; wherein, the coating agent formula for the pelletizing and coating is methyl cellulose with a mass concentration of 20%, vermiculite powder with a mass concentration of 69%, superabsorbent polymer SAP with a mass concentration of 10%, urea with a mass concentration of 1%, and gibberellin with a mass concentration of 0.01%, and the pelletizing magnification is 1.5 to 2 times. When performing pelletizing and coating, the Phalaris arundinacea seeds, Rumex acetosa seeds, Persicaria longiseta seeds, and Persicaria lapathifolia seeds can be pelletized and coated separately, or multiple plant seeds can be processed simultaneously.

[0083] It should be noted that methyl cellulose serves as an adhesive in the pelletizing and coating; vermiculite powder mainly serves as a filler and also has a certain water absorption capacity, and together with the superabsorbent resin SAP, it improves the water absorption capacity during the germination period and growth period; gibberellin, as a growth regulator, can improve the germination ability and growth rate.

[0084] In an embodiment of the present invention, the planting belt 2 is prepared by first spraying an adhesive on a layer of non-woven fabric, evenly mixing the coated plant seeds and sowing them on the non-woven fabric, and then covering another layer of non-woven fabric. Among them, the non-woven fabric used for the planting belt 2 has a unit area mass of 10 g / m 2 , and the adhesive used is sodium carboxymethylcellulose with a mass concentration of 2%. This adhesive also has a certain water absorption capacity and can provide water for seed germination.

[0085] It should be noted that different seeding rates are set on the planting belt 2 according to the size and establishment density of the seeds. In an embodiment of the present invention, the set seeding rates are as follows: Carex for 5 - 8 g / m 2 , Polygonum hydropiper for 4 - 6 g / m 2 , Phalaris arundinacea for 0.5 - 1 g / m 2 , Rumex acetosa for 1 - 2 g / m 2 , Persicaria longiseta for 3 - 5 g / m 2 , Persicaria lapathifolia for 6 - 8 g / m 2 .

[0086] In an embodiment of the present invention, step S1 includes: S11. The ecological bag 1 is made of polypropylene fiber, and connection holes 15 are respectively provided on parts outside the four-corner encapsulation lines. The interior is divided into two parts, an upper space 11 and a lower space 12, by a spacer layer 16. The upper space 11 is filled with a first substrate with a high aeration porosity, and the lower space 12 is filled with a second substrate with a high water-containing porosity, thus obtaining the ecological bag 1.

[0087] The ecological bag 1 is divided into an upper space 11 and a lower space 12 by a spacer layer 16, so as to fill different types of substrates into the stratified ecological bag 1, thereby enhancing the adaptability of plants to water in the water-level-fluctuation zone environment. The material of the spacer layer 16 can be the same as that of the ecological bag 1 or different from that of the ecological bag 1. The material of the spacer layer 16 is selected from polyester or polypropylene. The spacer layer 16 can be fixed in the ecological bag 1 by sewing.

[0088] In an embodiment of the present invention, step S2 includes: cleaning and leveling the slope of the water-level-fluctuation zone, stacking the ecological bags 1 layer by layer in a staggered manner along the slope of the water-level-fluctuation zone, overlapping and connecting the two connection holes 15 of adjacent two ecological bags 1 near the bottom of the slope with a tie strap, and overlapping and fixing the two connection holes 15 of adjacent two ecological bags 1 near the top of the slope with a soil nail to the slope of the water-level-fluctuation zone.

[0089] In an embodiment of the present invention, step S3 includes: laying the planting belt 2 on the ecological bag 1 and fixing it with a soil nail.

[0090] Confirm the size that the planting belt 2 needs to be cut according to the area of the non-overlapping area after the ecological bags 1 are stacked. There is no limit to the shape and size of the planting belt 2, as long as the planting belt 2 does not exceed the non-overlapping area after the ecological bags 1 are stacked. For example, the cutting width of the planting belt can be confirmed according to the width of the non-overlapping part of the ecological bag 1 from the bottom to the top of the slope, and the cutting length of the planting belt 2 can be confirmed according to the stacking width of each ecological bag layer. After laying the planting belt 2 on the ecological bag 1, the planting belt 2 can be fixed to the ecological bag 1 with a soil nail.

[0091] In an embodiment of the present invention, the construction method of the water-level-fluctuation zone slope protection system is carried out according to the following steps:

[0092] (1) Plant seed treatment:

[0093] a. Prepare a 6-BA solution of cytokinin with a concentration of 200 mg / L, and coat the sedge seeds and phalaris arundinacea seeds according to a drug-seed ratio of 1:3. After the seeds are dried, film formation is carried out. The film-forming agent formula is polyvinyl alcohol with a mass concentration of 3%, urea with a mass concentration of 0.1%, naphthalene acetic acid with a mass concentration of 0.005%, and polyacrylamide with a mass concentration of 0.1%.

[0094] b. Mix the coating agent and plant seeds and carry out pellet coating; the coating agent formula is methyl cellulose with a mass concentration of 20%, vermiculite powder with a mass concentration of 69%, superabsorbent polymer SAP with a mass concentration of 10%, urea with a mass concentration of 1%, and gibberellin with a mass concentration of 0.01%, and the pelletization magnification is 1.5 times.

[0095] (2) Planting belt production: At 10 g / m 2Spray 2% sodium carboxymethylcellulose on the non-woven fabric. After mixing the coated seeds in step (1) evenly, sow them on the non-woven fabric, and then cover another layer of non-woven fabric to form a planting belt with coated seeds sandwiched between two layers of non-woven fabric. The seeding rate of the coated seeds is as follows: for Carex, it is 5 g / m 2 , for Polygonum hydropiper, it is 4 g / m 2 , for Phalaris arundinacea, it is 1 g / m 2 , for Rumex acetosa, it is 2 g / m 2 , for Polygonum persicaria, it is 3 g / m 2 , for Polygonum lapathifolium, it is 8 g / m 2 .

[0096] (3) Ecological bag production: The ecological bag is made of polypropylene fiber, with a length of 60 cm and a width of 40 cm. Connection holes are set at the parts outside the encapsulation lines at the four corners of the ecological bag. A layer of polypropylene fiber is sewn inside the ecological bag as a spacer layer, dividing the ecological bag into an upper space and a lower space. Fill the upper layer of the ecological bag with loam and straw (the volume ratio of loam to straw is 3:1, and the total filling amount is not less than 80% of the volume of the upper space), and fill the lower layer with loam and sawdust (the volume ratio of loam to sawdust is 2:1, and the total filling amount is not less than 80% of the volume of the lower space). After filling the matrix materials, perform encapsulation.

[0097] (4) Ecological bag installation: For the slope surface (with a slope not greater than 30°) that needs to be repaired in the drawdown zone, after cleaning and leveling, stack the ecological bags layer by layer with staggered joints (the overlapping width of adjacent ecological bags in the same layer is 5 cm, and the overlapping width of adjacent ecological bags in different layers is 10 - 20 cm). Connect the connection holes of adjacent ecological bags in the direction close to the bottom of the slope with cable ties, and fix the connection holes in the direction close to the top of the slope to the slope surface with soil nails (with a diameter of 3 mm and a length of 0.2 m).

[0098] (5) Planting belt installation: Cut the planting belt in step (1) according to the size of the non-overlapping area exposed after stacking the ecological bags, lay the planting belt on the ecological bags, and fix it with soil nails (with a diameter of 2 mm and a length of 0.1 m).

[0099] (6) Plant maintenance: Pay attention to irrigation and pest control from seed germination to the seedling stage. After the plants form a good coverage in 2 - 3 months, the maintenance level can be reduced.

[0100] In summary, the technical solution of the present invention provides a restoration system for the water-level-fluctuation zone based on planting belts and ecological bags and its construction method. First, the restoration plant seeds are coated, and then the coated seeds are adhered with non-woven fabric to form planting belts. At the same time, different types of substrates are filled into the layered ecological bags and sealed. The ecological bags are laid on the water-level-fluctuation zone to be restored. After being fixedly connected through the connection holes at the corners of the ecological bags, the planting belts are fixed to the ecological bags. After a period of maintenance, the plants grow and adapt to the water-level-fluctuation zone environment. The technical solution of the present invention enhances the germination, growth and environmental adaptability of plants through the treatment of seeds, and enhances the adaptability of plants to water in the water-level-fluctuation zone environment through different ratios of the substrates filled in the ecological bags.

[0101] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A slope protection system for a fluctuating belt, characterized in that: It comprises eco-bags stacked in layers along the slope of a drawdown zone, and a planting belt laid on the eco-bags; wherein the interior of the eco-bags is formed with an upper space and a lower space, the upper space is filled with a first matrix with high ventilation pores, and the lower space is filled with a second matrix with high water pores; the planting belt is used to lay plant seeds on the eco-bags so that plants can grow on the slope of the drawdown zone.

2. The slope protection system of the falling zone according to claim 1 is characterized in that: The slope of the drawdown zone is formed with a plurality of eco-bag layers from the bottom to the top of the slope, and each eco-bag layer includes a plurality of eco-bags arranged along the length direction of the slope of the drawdown zone; wherein: Any two adjacent eco-bags in each eco-bag layer are connected by a first fixing member; and / or, Each of the ecological bag layers is fixed on the slope of the drawdown zone through a second fixing piece.

3. The slope protection system of the falling zone according to claim 2 is characterized in that: Any two adjacent eco-bags in each eco-bag layer are connected by a first fixing member, which includes a cable tie; each eco-bag layer is fixed to the slope of the drawdown zone by a second fixing member, which includes at least one soil nail.

4. The slope protection system of the falling zone according to claim 3 is characterized in that: The four corners of each eco-bag are respectively provided with connecting holes extending in the up-down direction; in each eco-bag layer: Any two adjacent eco-bags partially overlap, so that the two connection holes near the bottom of the slope are connected in the vertical direction to form a first mounting hole, and the two connection holes near the top of the slope are connected in the vertical direction to form a second mounting hole; The tie connects any two adjacent eco-bags through the first mounting hole, and the soil nails fix the eco-bag layer on the slope of the drawdown zone through the second mounting hole.

5. The slope protection system of the falling zone according to claim 1, characterized in that: The first matrix includes at least one of a first matrix material and a second matrix material; wherein the first matrix material includes sandy soil, the second matrix material includes loam and straw, and the volume ratio of loam to straw in the second matrix material is (7:3) to (8:2); and / or, The second matrix includes at least one of a third matrix material and a fourth matrix material; wherein the third matrix material includes loam and sawdust, and the fourth matrix material includes loam and mushroom residues. The volume ratio of loam to sawdust in the third matrix material is (6:4) to (8:2), and the volume ratio of loam to mushroom residues in the fourth matrix material is (6:4) to (8:2).

6. The slope protection system of the falling zone according to claim 1, characterized in that: The planting belt comprises two non-woven fabric layers arranged in the upper and lower directions, and coated plant seeds laid between the two non-woven fabric layers.

7. The slope protection system of the falling zone according to claim 6, characterized in that: The plant seeds are laid between the two non-woven fabric layers through an adhesive.

8. The slope protection system of the falling zone according to claim 1 or 6, characterized in that: The plant seeds include at least one of Carex seeds, Polygonum hydropiper seeds, Phragmites australis seeds, Rumex serrata seeds, Polygonum aviculare seeds and Rumex serrata seeds; and / or, The planting belt is fixed on the ecological bag through a third fixing member, and the third fixing member includes a soil nail.

9. A construction method for the slope protection system of a drawdown zone according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Provide eco-bags and plant belts; S2, stack the eco-bags layer by layer on the slope of the drawdown zone; S3, laying the planting belt on the eco-bag; S4. Maintain the plants.

10. The construction method of the slope protection system of the drawdown zone according to claim 9, characterized in that: Step S1 comprises: S10, coating Carex seeds, Polygonum hydropiper seeds, Phalaenopsis serrata seeds, Rumex serrata seeds, Polygonum serrata seeds and Rumex serrata seeds to obtain coated plant seeds; spraying an adhesive on a layer of non-woven fabric, mixing the coated plant seeds evenly and then sowing them on the non-woven fabric, and then covering them with another layer of non-woven fabric to obtain a planting belt; wherein the coating treatment of the Carex seeds and Polygonum hydropiper seeds comprises: mixing a cytokinin solution and plant seeds for coating, and then forming a film with a film-forming agent after drying; the coating treatment of the Phalaenopsis serrata seeds, Rumex serrata seeds, Polygonum serrata seeds and Rumex serrata seeds comprises: mixing a coating agent and plant seeds, and performing pelleting and coating; and / or, Step S1 includes: S11, the eco-bag is made of polypropylene fiber, the parts outside the four corner packaging lines are respectively provided with connection holes, the interior is divided into two parts, an upper space and a lower space, the upper space is filled with a first matrix with high ventilation pores, and the lower space is filled with a second matrix with high water pores, to obtain an eco-bag; and / or, Step S2 includes: cleaning and leveling the slope of the drawdown zone, stacking the eco-bags in layers along the slope of the drawdown zone, overlapping the two connection holes of two adjacent eco-bags near the bottom of the slope and connecting them with a tie, and overlapping the two connection holes of two adjacent eco-bags near the top of the slope and fixing them to the slope of the drawdown zone with soil nails; and / or, Step S3 includes: laying the planting belt on the eco-bag and fixing it with soil nails.

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