A planting blanket for river regulation and its usage method

Abstract

The present invention relates to a planting blanket for river regulation and its using method. The planting blanket body includes a surface film layer, a plant fiber layer, a planting layer, a functional net layer and a three-dimensional geogrid mat. The left end of the upper surface of the three-dimensional geogrid mat is low and the right end is high. A plurality of rows of flocking belts are connected to the lower surface of the functional net layer, and the lower ends of the flocking belts pass downward through the mesh holes of the three-dimensional geogrid mat. The planting layer contains plant seeds and edible mushroom strains. The right ends of the plant fiber layer, the planting layer, the functional net layer and the three-dimensional geogrid mat are fixedly connected. The upper surface of the plant fiber layer contacts the surface film layer, and the left and right ends of the surface film layer respectively cover the left and right ends of the plant fiber layer and the planting layer. The present invention provides a dual-purpose planting blanket for the bottom and slope of a river with good soil and water conservation function, which can reduce the project cost and construction difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy projects, and particularly relates to a planting blanket for river regulation and its usage method. Background Art

[0002] In recent years, the comprehensive regulation projects of urban rivers have been in full swing. During the construction of the water diversion channels in these projects, effective measures must be taken to prevent soil erosion caused by channel construction in the local area.

[0003] River hardening used to be an important means of river regulation. However, in recent years, due to the high cost of river hardening, it is difficult for water purification plants to grow in the water after river hardening, the water quality deteriorates, the aquatic organisms decrease, the hardened river blocks the infiltration of river water, and various problems such as the destruction of groundwater recharge occur. Therefore, newly built rivers usually do not have a hardening layer, which also makes the newly built rivers become key areas of soil erosion. Because of the damage and disturbance to the soil layer during construction, the ground vegetation disappears, the river bank slopes are inclined at a large angle, and the river bank slopes are severely scoured by rainwater and surface runoff before the construction is completed. After the construction is completed, when the river is flowing, the river water scours the river bank and river bed, taking away a large amount of sediment, which not only causes soil erosion, but also causes the deformation of the river bank and river bed, affecting the safety of both banks.

[0004] The patent document with the application number CN201921631056.1 discloses a planting blanket for promoting the growth of aquatic plants, which includes an adjustment frame and a matrix arranged on the adjustment frame. The matrix includes fiber bundles arranged in a 3D staggered manner and flocculent fillers arranged between the fiber bundles. The adjustment frame includes a cuboid frame composed of several longitudinal and transverse connecting struts.

[0005] The patent document with the application number CN201420423038.5 discloses a vegetation planting blanket for barren mountains, which includes a woven fabric surface layer and a woven fabric bottom layer. The interior of the planting blanket is provided with soil fillers for vegetation planting. An undegradable water retention plastic film is laid on the lower side of the woven fabric surface layer, and a degradable water retention layer is laid on the upper side of the woven fabric bottom layer; a grid is arranged in parallel between the water retention plastic film and the degradable water retention layer; planting holes for planting vegetation are provided on the woven fabric surface layer and the water retention plastic film; fastening anchor rods are provided on the planting blanket.

[0006] Although the above-mentioned planting blankets can be used in rivers to complete the ecological restoration of the rivers as soon as possible, since aquatic plants are different from terrestrial plants, the stems and leaves of aquatic plants are fragile and cannot penetrate the plant fiber layer, while the stems and leaves of terrestrial plants are strong and can penetrate the plant fiber layer. Therefore, the planting blankets currently used in water have different structures from those used on the river bank slopes and cannot be used interchangeably. Moreover, the planting of existing aquatic plants needs to be carried out when there is water in the river bed, which is relatively complex to use during the construction in the river channel and has a large construction difficulty. Summary of the Invention

[0007] To solve the problem that the existing planting blankets cannot be used interchangeably on the water bottom and the bank slope, the present invention provides a planting blanket for river regulation and its usage method, aiming to provide a riverbed and bank slope dual-purpose planting blanket with good soil and water conservation function, reducing the project cost and the construction difficulty.

[0008] In order to achieve the above object, the technical solution of the present invention is as follows:

[0009] A planting blanket for river regulation, the planting blanket body from top to bottom includes a surface film layer, a plant fiber layer, a planting layer, a functional net layer and a three-dimensional geogrid mat. The left end of the three-dimensional geogrid mat is thin and the right end is thick. There is a functional net layer above the three-dimensional geogrid mat. The lower surface of the functional net layer is connected with multiple rows of flocking belts. Each row of the flocking belts includes a connecting belt and a silk ribbon. The connecting belt is fixedly connected to the lower surface of the functional net layer along the horizontal direction obliquely. The lower end of the connecting belt is fixedly connected with multiple silk ribbons. The connecting belt is pressed by the functional net layer on the upper surface of the three-dimensional geogrid mat. The lower end of the silk ribbon passes downward through the mesh holes of the three-dimensional geogrid mat. The upper surface of the functional net layer contacts the lower surface of the planting layer. The planting layer contains plant seeds and edible mushroom strains. The upper surface of the planting layer contacts the lower surface of the plant fiber layer. The right ends of the plant fiber layer, the planting layer, the functional net layer and the three-dimensional geogrid mat are fixedly connected. The upper surface of the plant fiber layer is provided with a surface film layer. The left and right ends of the surface film layer respectively wrap around the left and right ends of the plant fiber layer and the planting layer to form a combined layer.

[0010] Further, the inscribed circle diameter of the mesh holes of the functional net layer is 1 cm to 5 cm.

[0011] Further, each connecting belt of each row of flocking belts is inclined 30° to 60° along the horizontal direction, and the connecting belts of each row of flocking belts are parallel to each other.

[0012] Further, both the connecting belt and the silk ribbon are strip-shaped belt bodies woven from colorless transparent woven bag flat filaments. The length of the silk ribbon is 15 cm to 20 cm, and the two side edges of the silk ribbon are serrated.

[0013] Further, the distance between every two adjacent rows of the connecting belts is greater than the inscribed circle diameter of the mesh holes of the functional net layer. There is a distance between two adjacent silk ribbons on each connecting belt, and the silk ribbons on two adjacent connecting belts are arranged in a staggered manner.

[0014] Further, the planting layer includes an upper non-woven fabric, a lower non-woven fabric and a seed layer. The seed layer is located between the upper non-woven fabric and the lower non-woven fabric. The seed layer is a layered structure formed by mixing terrestrial plant seeds, emergent plant seeds, submerged plant seeds and crushed edible mushroom strains. The upper non-woven fabric, the seed layer and the lower non-woven fabric are sewn together with silk threads.

[0015] Further, the thickness of the plant fiber layer is 3 mm to 7 mm.

[0016] The usage method of any one of the above planting blankets for river regulation includes the following steps:

[0017] A. Excavate the river course, shape the river course, set the river bank slope as an inclined plane, set the river bed as a horizontal plane, and determine the position of the normal water level line;

[0018] B. After the shaping of the river bank slope and the river bed is completed, lay multiple planting blanket bodies in sequence from the downstream direction to the upstream direction of the river course. The length direction of each planting blanket body is perpendicular to the length direction of the river course. The right end of the planting blanket body faces the downstream direction. Each planting blanket body starts to be laid from the top of the slope of one side of the river course, passes through the river bed and is laid to the top of the slope of the other side of the river course; The adjacent two planting blanket bodies arranged along the length direction of the river course are in contact with each other. At the position of the normal water level line, cut the surface film layer, plant fiber layer, planting layer and functional net layer along the width direction of the planting blanket body;

[0019] C. Lift the combined layer of the planting blanket body above the normal water level line, fill the three-dimensional geogrid mattress with soil through the mesh holes of the functional net layer. The soil combines the three-dimensional geogrid mattress and the silk ribbon together, cover the combined layer again, and use ground nails to fix the planting blanket body above the normal water level line. The ground nails penetrate through the surface film layer, plant fiber layer, planting layer, functional net layer and three-dimensional geogrid mattress and extend into the soil of the river bank slope;

[0020] D. Lift the combined layer and the functional net layer of the planting blanket body below the normal water level line, so that the silk ribbon is pulled out of the mesh holes of the three-dimensional geogrid mattress, use ground nails to fix the three-dimensional geogrid mattress. The ground nails penetrate through the three-dimensional geogrid mattress and extend into the soil of the river bed and the river bank slope below the normal water level line. Fill the three-dimensional geogrid mattress with gravel. Among every two adjacent planting blanket bodies arranged along the length direction of the river course, take the right end of the combined layer and the functional net layer of the planting blanket body in the upstream direction as the rotation axis, and turn and cover it on the upper surface of the three-dimensional geogrid mattress of the adjacent planting blanket body in the downstream direction in sequence. The silk ribbon on the functional net layer of the turned planting blanket body faces upward and accumulates above the functional net layer. Pour concrete on the three-dimensional geogrid mattress at the uppermost upstream;

[0021] E. Use a puncher to punch holes evenly in the surface film layer of the planting blanket on the river bank slope above the normal water level line. The interval between two adjacent holes punched by the puncher is 5 cm - 10 cm;

[0022] F. Sprinkle water on the planting blanket body every 3 to 5 days. Since the thick end of the three-dimensional geogrid faces downstream and the thin end faces upstream, when the combined layer and functional network layer of the planting blanket body located in the upstream direction of each two adjacent planting blanket bodies arranged along the length of the river channel are flipped over to cover the upper surface of the three-dimensional geogrid of the adjacent planting blanket body in the downstream direction, a water storage space with an opening upward and a depression downward is formed on the surface film layer between the raised end of the planting blanket body formed by the flipping and the thick end of the three-dimensional geogrid adjacent to the downstream. The amount of water to be sprinkled is based on whether the plant fiber layer on the river slope is moist and there is water in the water storage space on the riverbed. The sprinkling time continues until water flows through the river channel.

[0023] Through the above technical solution, the beneficial effects of the present invention are:

[0024] The present invention is easy to use and is applicable to river slopes and river beds. It can be laid at one time and can achieve soil and water conservation and ecological restoration of a newly built river without using a variety of planting blankets. When the present invention is used for a river bed, it is laid before the water in the river is passed to cultivate aquatic plants, thus avoiding scouring by river water when the water is passed. When the water is passed, it can prevent water and soil erosion in the river bed. Planting of submerged plants does not need to be carried out when there is water in the river, so there is no danger and plant seeds are not easily washed away by water.

[0025] When the present invention is used on a river slope above the normal water level line, the ribbon can strengthen the connection between the planting blanket body and the river slope. Compared with the prior art, it can reduce the use of ground nails, reduce engineering difficulty, and speed up construction efficiency. The ribbon also forms a water retaining structure, so that water that penetrates into the planting blanket body is not easy to form runoff, thereby improving water utilization efficiency, reducing runoff generation, and preventing soil erosion.

[0026] No matter where the planting layer of the present invention is used, there are seeds suitable for that place to germinate, and a dense plant protection layer can be formed before the water flows through the river channel, effectively reducing the scouring effect of water flow when the water flows through the river channel.

[0027] When the present invention is located on the riverbed and the river slope below the normal water level line, the surface film layer, the plant fiber layer, the planting layer and the functional network layer are flipped to form a ribbon piled up at the top, which can prevent the water flow from scouring the riverbed and the river slope below the normal water level line, block and guide the river water, and prevent the river water from excessively scouring the riverbed and the river slope below the normal water level line. The ribbon can prevent the water flow with excessive flow rate from carrying away the submerged plants on the planting blanket body, and strengthen the connection between the submerged plants and the planting blanket body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a structural cross-sectional view of the planting blanket body of the present invention;

[0029] Figure 2It is a schematic structural diagram of the connection between the functional network layer and the flocking belt of the present invention;

[0030] Figure 3 It is a schematic layer structure diagram of the planting layer of the present invention;

[0031] Figure 4 It is a schematic diagram when the present invention is applied to the river slope above the normal water level;

[0032] Figure 5 It is a sectional view of the use state of the present invention (from the upstream to the downstream direction);

[0033] Figure 6 It is Figure 5 A sectional view taken along the line A-A of

[0034] Figure 7 It is Figure 6 An enlarged view of part B of

[0035] The reference numerals in the drawings are: 1, surface film layer; 2, plant fiber layer; 3, planting layer; 4, functional network layer; 5, three-dimensional geogrid mat; 6, flocking belt; 7, connecting belt; 8, ribbon; 9, water storage space; 10, ground nail; 11, upper non-woven fabric; 12, lower non-woven fabric; 13, seed layer. Detailed implementation manners

[0036] The present invention will be further described below in conjunction with the drawings and specific implementation manners:

[0037] It should be noted that the directional terms such as "front", "rear", "left", "right", "upper", "lower", "bottom surface" and "top surface" used in the following description refer to the directions in the drawings, and the terms "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0038] As Figures 1 to 7 shown, a planting carpet for river regulation, the planting carpet body includes a surface film layer 1, a plant fiber layer 2, a planting layer 3, a functional network layer 4 and a three-dimensional geogrid mat 5 from top to bottom, Figure 1The front - rear direction is the length direction of the planting carpet body, and the left - right direction is the width direction of the planting carpet body. The left end of the three - dimensional geogrid mat 5 is thin and the right end is thick. There is a functional net layer 4 above the three - dimensional geogrid mat 5. The lower surface of the functional net layer 4 is connected with multiple rows of flocking belts 6. The multiple rows of flocking belts 6 are arranged at intervals on the lower surface of the functional net layer 4. Each row of the flocking belt 6 includes a connecting belt 7 and a silk ribbon 8. A plurality of connecting belts 7 are fixedly connected to the lower surface of the functional net layer 4 in an inclined manner along the horizontal direction. The lower end of the connecting belt 7 is fixedly connected with a plurality of silk ribbons 8. The connecting belt 7 is pressed by the functional net layer 4 on the upper surface of the three - dimensional geogrid mat 5. Blow air towards the functional net layer 4 to make the lower ends of the silk ribbons 8 pass downward through the mesh holes of the three - dimensional geogrid mat 5. The upper surface of the functional net layer 4 contacts the lower surface of the planting layer 3. The planting layer 3 contains plant seeds and edible mushroom strains. The upper surface of the planting layer 3 contacts the lower surface of the plant fiber layer 2. The right ends of the plant fiber layer 2, the planting layer 3, the functional net layer 4 and the three - dimensional geogrid mat 5 are fixedly connected. The right ends of the plant fiber layer 2, the planting layer 3, the functional net layer 4 and the three - dimensional geogrid mat 5 are fixedly connected by silk thread stitching. A surface film layer 1 is provided on the upper surface of the plant fiber layer 2. The surface film layer 1 is a degradable plastic film. The left and right ends of the surface film layer 1 are respectively wrapped outside the left and right ends of the plant fiber layer 2 and the planting layer 3 to form a combined layer (that is, the left end of the surface film layer 1 is wrapped outside the left ends of the plant fiber layer 2 and the planting layer 3, and the right end of the surface film layer 1 is wrapped outside the right ends of the plant fiber layer 2 and the planting layer 3).

[0039] The functional net layer 4 is a planar mesh sheet woven from flat filaments of a woven bag. The inscribed circle diameter of the mesh holes of the functional net layer 4 is 1 cm - 5 cm.

[0040] The length direction of the connecting belt 7 is arranged along the horizontal direction. The length direction of the silk ribbon 8 is arranged along the vertical direction and the width direction is arranged along the horizontal direction. The connecting belts 7 of each row of flocking belts 6 are inclined 30° - 60° along the horizontal direction, that is, the length direction of each connecting belt 7 forms an angle of 30° - 60° with the length direction of the functional net layer 4. The connecting belts 7 of each row of flocking belts 6 are parallel to each other.

[0041] Both the connecting belt 7 and the silk ribbon 8 are strip - shaped bodies woven from colorless and transparent flat filaments of a woven bag. The length of the silk ribbon 8 is 15 cm - 20 cm. The two side edges of the silk ribbon 8 are serrated.

[0042] The spacing between every two adjacent rows of the connecting belts 7 is greater than the inscribed circle diameter of the mesh holes of the functional net layer 4. There is a spacing between two adjacent silk ribbons 8 on each connecting belt 7. The silk ribbons 8 on adjacent two connecting belts 7 are arranged in a staggered manner.

[0043] The planting layer 3 includes an upper non-woven fabric 11, a lower non-woven fabric 12 and a seed layer 13. The seed layer 13 is located between the upper non-woven fabric 11 and the lower non-woven fabric 12. The seed layer 13 is a layered structure formed by mixing terrestrial plant seeds, emergent plant seeds, submerged plant seeds and broken pieces of edible mushroom strains. The upper non-woven fabric 11, the seed layer 13 and the lower non-woven fabric 12 are stitched together with silk threads, and the silk threads are tightened to make the upper non-woven fabric 11, the seed layer 13 and the lower non-woven fabric 12 fit together. Both the upper non-woven fabric 11 and the lower non-woven fabric 12 are made of a degradable flame-retardant plant fiber non-woven fabric disclosed in the patent document with the application number CN202010995738.1.

[0044] The terrestrial plant seeds are any one or several of lavender seeds, ryegrass seeds, tall fescue seeds, and clover seeds. The emergent plant seeds are any one or several of iris pseudacorus seeds, scirpus validus seeds, reed seeds, thalia dealbata seeds, and lotus seeds. The submerged plant seeds are any one or several of potamogeton crispus seeds, najas marina seeds, vallisneria natans seeds, and ceratophyllum demersum seeds. The edible mushroom strain is any one of straw mushroom, pleurotus nebrodensis, and boletus edulis.

[0045] The plant fiber layer 2 is a sheet formed by interweaving one or several of coconut fibers, palm fibers, and hemp fibers. The thickness of the plant fiber layer 2 is 3 mm to 7 mm.

[0046] A method for using a planting carpet for river regulation includes the following steps:

[0047] A. Excavate the river, shape the river, set the river slope as an inclined plane, and set the river bed as a horizontal plane (the inclination of the river bed from upstream to downstream is very small and can be ignored), and determine the position of the normal water level line;

[0048] B. After the shaping of the river channel slope and riverbed is completed, lay the planting carpet body 20 - 40 days in advance before the river channel is filled with water. Lay multiple planting carpet bodies successively from the downstream direction to the upstream direction of the river channel. The length direction of each planting carpet body is perpendicular to the length direction of the river channel. The right end of each planting carpet body (i.e., the end where the plant fiber layer 2, planting layer 3, functional net layer 4, and three-dimensional geogrid mat 5 are fixedly connected) faces the downstream direction. Each planting carpet body starts to be laid from the top of the slope on one side of the river channel, passes through the riverbed, and is laid to the top of the slope on the other side of the river channel; the adjacent two planting carpet bodies arranged along the length direction of the river channel are in contact with each other. At the position of the normal water level line, cut the surface film layer 1, plant fiber layer 2, planting layer 3, and functional net layer 4 along the width direction of the planting carpet body, that is: use scissors to cut the surface film layer 1, plant fiber layer 2, planting layer 3, and functional net layer 4 from the upstream direction to the downstream direction (which is also the direction from the left end to the right end of the surface film layer 1, plant fiber layer 2, planting layer 3, and functional net layer 4) along the normal water level line. Because the right ends of the plant fiber layer 2, planting layer 3, functional net layer 4, and three-dimensional geogrid mat 5 are fixedly connected, and the left and right ends of the surface film layer 1 respectively cover the left and right ends of the plant fiber layer 2 and planting layer 3, the cut surface film layer 1, plant fiber layer 2, planting layer 3, and functional net layer 4 will not separate from the three-dimensional geogrid mat 5;

[0049] C. Lift the combined layer of the planting carpet body above the normal water level line, fill the three-dimensional geogrid mat 5 with soil through the mesh holes of the functional net layer 4. The soil combines the three-dimensional geogrid mat 5 and the ribbon 8 together. Cover the combined layer again, and use the ground nail 10 to fix the planting carpet body above the normal water level line. The ground nail 10 passes through the surface film layer 1, plant fiber layer 2, planting layer 3, functional net layer 4, and three-dimensional geogrid mat 5 from top to bottom and extends into the soil of the river channel slope;

[0050] D. Lift the combined layer of the planting carpet body and the functional net layer 4 below the normal water level line, so that the ribbon 8 is pulled out from the mesh holes of the three-dimensional geogrid mat 5. Use the ground nail 10 to fix the three-dimensional geogrid mat 5. The ground nail 10 passes through the three-dimensional geogrid mat 5 and extends into the soil of the riverbed and the river channel slope below the normal water level line. Fill the three-dimensional geogrid mat 5 with crushed stones. Among every two adjacent planting carpet bodies arranged along the length direction of the river channel, take the right end of the combined layer and the functional net layer 4 of the planting carpet body in the upstream direction as the rotation axis, and successively turn and cover the upper surface of the three-dimensional geogrid mat 5 of the adjacent planting carpet body in the downstream direction. After turning, the ribbon 8 on the functional net layer 4 of the planting carpet body faces upward (as Figures 5 to 7 shown. For the sake of clarity, Figure 5The ribbon 8 located below the normal water level line is drawn as a vertical line so as to clearly and intuitively observe the different states of the ribbon 8 above and below the normal water level line), piled up above the functional net layer 4. After the planting carpet body is laid from the downstream direction to the upstream direction of the river channel, only the three-dimensional geogrid mat 5 of the planting carpet body at the uppermost upstream position of the riverbed and the riverbank slope below the normal water level line is exposed. There is no three-dimensional geogrid mat 5 below the surface film layer 1, plant fiber layer 2, planting layer 3, and functional net layer 4 of the planting carpet body at the lowermost downstream position of the riverbed and the riverbank slope below the normal water level line. Instead, it is directly laid on the riverbed at the lowermost downstream and the riverbank slope below the normal water level line. Concrete is poured on the three-dimensional geogrid mat 5 at the uppermost upstream position of the riverbed and the riverbank slope below the normal water level line. The inverted surface film layer 1, plant fiber layer 2, planting layer 3, and functional net layer 4 only cover the upper surface of the three-dimensional geogrid mat 5 in the downstream direction and are not connected to the upper surface of the three-dimensional geogrid mat 5. When the river channel is flowing with water, the water flow scours the functional net layer 4, which will make the inverted surface film layer 1, plant fiber layer 2, and planting layer 3 fit on the upper surface of the three-dimensional geogrid mat 5. The functional net layer 4 is scoured by water, and the water flow slows down after passing through the functional net layer 4, which will not affect the riverbed below the three-dimensional geogrid mat 5 and the gravel. The water flow passing through the functional net layer 4 can provide sufficient nutrients for aquatic plants. At the same time, as the functional net layer 4 slows down the water flow and the sediment in the water flow settles, after the surface film layer 1 degrades, the plant fiber layer 2 will contact the upper surface of the three-dimensional geogrid mat 5, and with the growth of aquatic plants, the functional net layer 4, planting layer 3, plant fiber layer 2, and three-dimensional geogrid mat 5 form an integral whole; because the surface film layer 1 degrades quickly, the plant fiber layer 2 and planting layer 3 decompose slowly, and the functional net layer 4 does not decompose, thus forming a planting carpet body with a decomposition speed and functional progression;

[0051] E. Use a puncher to evenly punch holes in the surface film layer 1 of the planting carpet on the riverbank slope above the normal water level line. The interval between two adjacent holes punched by the puncher is 5 cm to 10 cm;

[0052] F. Sprinkle water on the planting carpet body once every 3 to 5 days. The thick end faces the downstream direction, and the thin end faces the upstream direction. When in each adjacent two planting carpet bodies arranged along the length direction of the river channel, the combined layer and the functional net layer 4 of the planting carpet body in the upstream direction are turned over and covered on the upper surface of the three-dimensional geogrid mat 5 of the adjacent planting carpet body in the downstream direction, because the surface film layer 1 at the contact part with the three-dimensional geogrid mat 5 in the downstream direction after turning over is lower than the raised end formed by turning over of the upstream planting carpet body and the thick end of the three-dimensional geogrid mat 5 where it is located, an upward-opening and downward-sunken water storage space 9 is formed at the lowest position on the surface film layer 1 between the raised end formed by turning over of the planting carpet body and the thick end of the three-dimensional geogrid mat 5 in the downstream direction (that is Figure 7(the shaded part in the figure), the amount of water sprayed is based on the complete wetting of the plant fiber layer 2 on the river channel slope and the presence of accumulated water in the water storage space 9 on the riverbed. The watering time continues until water flows through the river channel. Since one end of the surface film layer 1 forms a bulge due to flipping (this bulging end is the left end after the surface film layer 1 is flipped as Figure 7 the left end in the figure), and the right end of the surface film layer 1 after flipping (i.e., the left end before the surface film layer 1 is flipped becomes Figure 7 the right end in the figure) is close to the right end of the three-dimensional geogrid mat 5 where it is located, thus forming a water storage space 9 with higher left and right ends and lower middle part of the surface film layer 1 after each planting carpet body is flipped, opening upward. Before the surface film layer 1 is degraded, it can be used to store water for a short time to cultivate submerged plants and emergent plants.

[0053] In the part of the river channel slope above the normal water level of the present invention, the ribbon 8 of the functional net layer extends into the three-dimensional geogrid mat 5, which not only strengthens the connection between the planting carpet body and the river channel slope, but also, compared with the prior art, can reduce the use of ground nails 10. The ribbon 8 also forms a water retaining structure, making the water infiltrating into the planting carpet body not easily form runoff, but infiltrate into the river channel slope along the direction of the ribbon 8, improving the water utilization efficiency, reducing runoff generation, and preventing soil erosion.

[0054] Since the surface film layer 1 above the normal water level is perforated during laying, the present invention does not affect the growth of terrestrial plants. The surface film layer 1 is a degradable plastic film. After some terrestrial plants grow through the holes in the surface film layer 1, the degradation process of the surface film layer 1 has already started, and this degradation process is about 45 - 60 days. The edible mushroom strains on the river channel slope can accelerate this decomposition process, causing the surface film layer 1 on the river channel slope to decompose quickly, while the edible mushroom strains on the riverbed are soaked to death by water and cannot cause the surface film layer 1 to decompose quickly, so as to keep water stored for a long time, promote the growth of terrestrial plants below the surface film layer 1, and form a dense plant protection layer before the river channel is filled with water.

[0055] In the part of the present invention below the normal water level, the surface film layer 1 is not perforated, which can retain the water sprayed on the riverbed, soak the planting layer 3, and promote the germination of aquatic plant seeds (emergent plant seeds and submerged plant seeds).

[0056] The planting layer 3 of the present invention contains terrestrial plant seeds, emergent plant seeds, submerged plant seeds, and broken pieces of edible mushroom strains. That is, no matter where the planting layer 3 is located, there are seeds suitable for germination at that place. The present invention is located at the riverbank slope above the normal water level. Since the water volume is not sufficient to germinate the submerged plant seeds, it is suitable for the germination and growth of terrestrial plant seeds, emergent plant seeds, and broken pieces of edible mushroom strains. The hyphae in the broken pieces of edible mushroom strains can quickly occupy the planting layer 3 and the plant fiber layer 2. On the one hand, it makes the planting layer 3 and the plant fiber layer 2 form a whole, and forms a whole among the structures of each layer to prevent the impact of water flow. On the other hand, it can also quickly decompose the planting layer 3, the plant fiber layer 2, and the surface film layer 1, so that they can be quickly utilized by other plants. The present invention is located at the riverbank slope below the normal water level. Because the amount of water sprayed is not sufficient to germinate the submerged plant seeds, terrestrial plants will grow. After the river is filled with water, submerged plants will also grow. The present invention is located at the riverbed. Due to the large water volume (including the water sprayed and the water flowing down from the surface of the planting carpet body of the riverbank slope), the water directly soaks the planting layer 3, and the edible mushroom strains are soaked to death by the water, which is not suitable for the germination and growth of terrestrial plant seeds and broken pieces of edible mushroom strains. However, it is suitable for the germination of emergent plant seeds and submerged plant seeds, so that they can grow quickly.

[0057] The thickness of the plant fiber layer 2 of the present invention is 3 mm to 7 mm. The roots and rhizomes of terrestrial plants are strong enough to penetrate the gaps between the fibers of the plant fiber layer 2. Therefore, at the part of the riverbank slope above the normal water level of the present invention, the plant fiber layer 2 above the planting layer 3 does not affect the germination and growth of terrestrial plant seeds and broken pieces of edible mushroom strains. At the part of the present invention located on the riverbed, because the surface film layer 1, the plant fiber layer 2, the planting layer 3, and the functional net layer 4 are turned over, the plant fiber layer 2 is located below the planting layer 3, and the planting layer 3 is located below the functional net layer 4. There are mesh holes on the functional net layer 4, which does not affect the growth of submerged plants. At the same time, it forms a grid that can fix the roots of submerged plants and strengthens the connection with submerged plants. The ribbon 8 accumulates on the top, similar to the submerged plants growing at the bottom of the water. The transparent ribbon 8 neither affects the submerged plants' absorption of sunlight nor can guide the river water at the initial stage when the river is filled with water (when the submerged plants have not grown yet), preventing the river water from scouring the riverbed excessively. The ribbon 8 can prevent the direct scouring of the riverbed and the riverbank slope below the normal water level by too large water flow, and avoid the river water from taking away the submerged plants on the planting carpet body.

[0058] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Without departing from the spirit of the present invention, that is, within the scope of disclosure, various deformations can be made to the technical solutions of the present invention.

Claims

1. A method for using a planting carpet for river regulation, characterized in that, The planting carpet body includes, from top to bottom, a surface film layer (1), a plant fiber layer (2), a planting layer (3), a functional net layer (4), and a three-dimensional geogrid mat (5). The left end of the three-dimensional geogrid mat (5) is thin and the right end is thick. There is a functional net layer (4) above the three-dimensional geogrid mat (5). Multiple rows of flocking tapes (6) are connected to the lower surface of the functional net layer (4). Each row of the flocking tapes (6) includes a connecting tape (7) and a silk tape (8). The connecting tape (7) is fixedly connected to the lower surface of the functional net layer (4) in an inclined manner along the horizontal direction. The lower end of the connecting tape (7) is fixedly connected to a plurality of silk tapes (8). The connecting tape (7) is pressed by the functional net layer (4) on the upper surface of the three-dimensional geogrid mat (5). The lower ends of the silk tapes (8) pass downward through the mesh holes of the three-dimensional geogrid mat (5). The upper surface of the functional net layer (4) contacts the lower surface of the planting layer (3). The planting layer (3) contains plant seeds and edible mushroom strains. The upper surface of the planting layer (3) contacts the lower surface of the plant fiber layer (2). The right ends of the plant fiber layer (2), the planting layer (3), the functional net layer (4), and the three-dimensional geogrid mat (5) are fixedly connected. The upper surface of the plant fiber layer (2) is provided with a surface film layer (1). The left and right ends of the surface film layer (1) respectively wrap around the left and right ends of the plant fiber layer (2) and the planting layer (3) to form a combined layer; A method for using a planting carpet for river regulation, comprising the following steps: A. Excavate the river, shape the river, set the river slope as an inclined plane, set the river bed as a horizontal plane, and determine the position of the normal water level line; B. After the shaping of the river slope and the river bed, lay multiple planting carpet bodies sequentially from the downstream direction to the upstream direction of the river. The length direction of each planting carpet body is perpendicular to the length direction of the river. The right end of the planting carpet body faces the downstream direction. Each planting carpet body starts to be laid from the top of the slope on one side of the river, passes through the river bed, and is laid to the top of the slope on the other side of the river. The adjacent two planting carpet bodies arranged along the length direction of the river are in contact with each other. At the position of the normal water level line, cut the surface film layer (1), the plant fiber layer (2), the planting layer (3), and the functional net layer (4) along the width direction of the planting carpet body; C. Lift the combined layer of the planting carpet body above the normal water level line, fill the three-dimensional geogrid mat (5) with soil through the mesh holes of the functional net layer (4). The soil combines the three-dimensional geogrid mat (5) and the silk tapes (8) together. Cover the combined layer again, and use ground nails (10) to fix the planting carpet body above the normal water level line. The ground nails (10) pass through the surface film layer (1), the plant fiber layer (2), the planting layer (3), the functional net layer (4), and the three-dimensional geogrid mat (5) from top to bottom and extend into the soil of the river slope; D. Lift the combined layer and the functional net layer (4) of the planting carpet body below the normal water level line, so that the ribbon (8) is pulled out of the mesh holes of the three-dimensional geogrid mat (5), and use ground nails (10) to fix the three-dimensional geogrid mat (5). The ground nails (10) pass through the three-dimensional geogrid mat (5) and extend into the soil of the riverbed and the river channel slope below the normal water level line. Fill the three-dimensional geogrid mat (5) with gravel. Among every two adjacent planting carpet bodies arranged along the length direction of the river channel, take the right end of the combined layer and the functional net layer (4) of the planting carpet body in the upstream direction as the rotation axis, and turn and cover it on the upper surface of the three-dimensional geogrid mat (5) of the adjacent planting carpet body in the downstream direction in sequence. The ribbon (8) on the functional net layer (4) of the turned planting carpet body faces upward and accumulates above the functional net layer (4). Pour concrete on the three-dimensional geogrid mat (5) at the uppermost upstream of the riverbed and the river channel slope below the normal water level line; E. Use a hole punch to uniformly punch holes in the surface film layer (1) of the planting carpet on the river channel slope above the normal water level line. The interval between two adjacent holes punched by the hole punch is 5 cm to 10 cm; F. Sprinkle water on the planting carpet body once every 3 to 5 days. Since the thick end of the three-dimensional geogrid mat (5) faces downstream and the thin end faces upstream, when the combined layer and the functional net layer (4) of the planting carpet body in the upstream direction among every two adjacent planting carpet bodies arranged along the length direction of the river channel are turned and covered on the upper surface of the three-dimensional geogrid mat (5) of the adjacent planting carpet body in the downstream direction, a water storage space (9) with an upward opening and a downward depression is formed at the lowest position on the surface film layer (1) between the raised end of the planting carpet body due to turning and the thick end of the adjacent three-dimensional geogrid mat (5) in the downstream direction. The amount of water sprinkled is based on the wetting of the plant fiber layer (2) on the river channel slope and the presence of accumulated water in the water storage space (9) on the riverbed. The water sprinkling continues until water flows through the river channel.

2. The method for using a planting carpet for river regulation according to claim 1, characterized in that, The inscribed circle diameter of the mesh holes of the functional net layer (4) is 1 cm to 5 cm.

3. The usage method of a planting carpet for river regulation according to claim 1, characterized in that, The connecting bands (7) of each row of flocked tapes (6) are inclined at 30° to 60° along the horizontal direction, and the connecting bands (7) of each row of flocked tapes (6) are parallel to each other.

4. The usage method of a planting carpet for river regulation according to claim 1, characterized in that, The connecting band (7) and the ribbon (8) are both strip-shaped bodies woven from colorless transparent woven bag flat filaments. The length of the ribbon (8) is 15 cm to 20 cm, and the two side edges of the ribbon (8) are serrated.

5. The method for using a planting carpet for river regulation according to claim 1, characterized in that, The distance between every two adjacent rows of the connecting bands (7) is greater than the inscribed circle diameter of the mesh holes of the functional net layer (4). There is a distance between two adjacent ribbons (8) on each connecting band (7), and the ribbons (8) on two adjacent connecting bands (7) are arranged in a staggered manner.

6. The usage method of a planting blanket for river regulation according to claim 1, characterized in that, The planting layer (3) includes an upper non-woven fabric (11), a lower non-woven fabric (12) and a seed layer (13). The seed layer (13) is located between the upper non-woven fabric (11) and the lower non-woven fabric (12). The seed layer (13) is a layered structure formed by mixing terrestrial plant seeds, emergent plant seeds, submerged plant seeds and broken pieces of edible mushroom strains. The upper non-woven fabric (11), the seed layer (13) and the lower non-woven fabric (12) are stitched together with silk threads.

7. The usage method of a planting carpet for river regulation according to claim 1, characterized in that, The thickness of the plant fiber layer (2) is 3 mm to 7 mm.

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