Lake transition zone reconstruction method

Abstract

The present invention discloses a method for reconstructing a lake transition zone, comprising: Step 1, constructing a concrete slope; Step 2, laying a gravel layer on the upper surface of the concrete slope; Step 3, setting an aquatic ecological layer, an amphibious ecological layer and a subaqueous ecological layer according to the water level fluctuation range of the lake; Step 4, laying a soil layer on the upper surface of the gravel layer within the range of the aquatic ecological layer, reserving a plurality of planting tube reserved holes at intervals, detachably installing a planting tube unit in the planting tube reserved holes, filling aquatic plant seeds and nutrients in the planting tube, and burying a water diversion structure in the gravel layer; Step 5, pre-burying a plurality of fixing columns on the gravel layer and the concrete layer within the ranges of the amphibious ecological layer and the subaqueous ecological layer, fixing a plurality of planting frame units to the plurality of fixing columns respectively, and filling amphibious plant seeds and nutrients or subaqueous plant seeds and nutrients in the planting frame units. The present invention has the beneficial effects of the co-growth of multiple ecosystems and overcoming the defect of being washed away by water flow.

Description

Technical Field

[0001] The present invention relates to the technical field of lake transition zone construction. More specifically, the present invention relates to a method for reconstructing a lake transition zone. Background Art

[0002] The lake transition zone is an amphibious ecosystem between land and water, often affected by the floating of water levels. The scouring during the land-water transition stage is particularly severe, resulting in large-scale soil erosion over a long time. It is more difficult for vegetation to take root, and the shore slope ecosystem has been severely damaged. Especially for lakes with a large range of water level fluctuations and strong influence of wind and waves by seasons and climate, plant seeds are easily washed away by water flow, resulting in the inability of plants to survive in large areas. The vegetation cannot be effectively restored artificially, and the water-land connection transition zone, which plays a key role in the ecological system, is damaged and cannot exist stably for a long time.

[0003] Existing ecological revetment forms such as composite grass-planting slope protection and precast hollow block slope protection have poor anti-scouring properties and are difficult to withstand large currents and waves. For example, geocell slope protection has good greening effect, increased drainage performance, fast construction, and low cost, but the materials are not environmentally friendly and have high requirements for terrain; for example, gabion mesh ecological slope protection has good water permeability and seismic resistance, but the greening area is limited; ecological bag type ecological slope protection is easy to construct and has good vegetation restoration, but the ecological bags are not durable and have poor anti-scouring ability. These ecological revetment forms all have their own problems and cannot completely solve the practical problems of continuous, stable, and healthy revetment of existing lake transition zones. Summary of the Invention

[0004] An object of the present invention is to solve at least the above problems and provide at least the advantages described later.

[0005] To achieve these and other advantages in accordance with the present invention, there is provided a method for reconstructing a lake transition zone, including the following steps:

[0006] Step 1: Build a concrete slope along the direction from both banks of the lake towards the center of the lake;

[0007] Step 2: Lay a gravel layer on the upper surface of the concrete slope, and the gravel layer is bonded with a gelling agent;

[0008] Step 3: Set up an aquatic ecological layer, an amphibious ecological layer, and a subaqueous ecological layer according to the water level fluctuation range of the lake. Among them, the aquatic ecological layer is above the water level fluctuation range, the subaqueous ecological layer is below the water level fluctuation range, and the amphibious ecological layer is between the two;

[0009] Step 4: a soil layer is laid on the upper surface of the gravel layer within the range of the aquatic ecological layer, and a plurality of reserved holes for planting tubes are reserved at intervals on the gravel layer and the soil layer, and planting tube units are detachably installed in the planting tube pre-holes, and aquatic plant seeds and nutrients are filled in the planting tubes, and a water diversion structure is buried in the gravel layer to divert water to the planting tube units;

[0010] Step 5: Pre-embed a plurality of fixed columns on the gravel layer and the concrete layer within the amphibian ecological layer and the underwater ecological layer, respectively fix a plurality of planting frame units on the plurality of fixed columns, fill the planting frame units located in the amphibian ecological layer with amphibian plant seeds and nutrients, and fill the planting frame units located in the underwater ecological layer with underwater plant seeds and nutrients.

[0011] Preferably, the concrete slope is constructed to include a horizontal connecting section, a slope section and a horizontal extending section in sequence from the lake shore to the lake center.

[0012] Preferably, the reserved hole of the planting tube in step 4 is cylindrical, and the planting tube unit in step 4 comprises:

[0013] An installation tube coaxially extends into the reserved hole of the planting tube, the bottom of the installation tube is closed, and a plurality of water inlet holes and at least one water diversion connection port are reserved on the side wall of the installation tube, and the water diversion connection port is connected to the water diversion structure;

[0014] A water absorbing layer, which is laid on the inner wall of the installation tube;

[0015] The inner cylinder coaxially extends into the column surrounded by the water absorbing layer, and a plurality of water inlet holes are reserved on the side wall of the inner cylinder. Aquatic plant seeds and nutrients are filled in the inner cylinder.

[0016] Preferably, the planting tube unit in step 4 further comprises an annular tube cover having threaded holes, a protective net is laid and fixed in the hollow portion in the middle of the tube cover, and the tube cover and the mounting tube are fixed by bolts and nuts.

[0017] Preferably, the water diversion structure in step four includes multiple water diversion pipes and water-absorbing materials filled in the water diversion pipes, multiple through holes are opened on the side walls of the water diversion pipes, at least one water diversion pipe is connected between two adjacent planting pipes along the two banks of the lake toward the center of the lake, the end of the water diversion pipe is connected to the water diversion connecting port of the inner tube, and the water diversion pipe located closest to the lake extends out of the gravel layer and extends into the water of the lake.

[0018] Preferably, the planting frame unit in step five includes a precast concrete cushion layer, with a planting groove opened in the middle of its upper surface. Amphibious plant seeds and nutrients, or underwater plant seeds and nutrients are filled in the planting groove, and a protection net is covered on the planting groove. Among them, the concrete cushion layer and the fixed column are fixed by pouring concrete, and the lower end of the fixed column extends into the bottom of the lake.

[0019] Preferably, it also includes a plurality of seedling protection and wave blocking structures preset on the periphery of the upper surface of the concrete cushion layer in step five. The seedling protection and wave blocking structures include:

[0020] A first baffle, which is in a quasi-cylindrical shape. The side of the first baffle close to the lake shore is higher than the side close to the lake center, and both sides of the first baffle are in a state of protruding towards the lake center. A first wave-resistant hole is opened on the first baffle along the direction of the center line connecting its two sides;

[0021] A second baffle, which is arranged on the side close to the lake shore relative to the first baffle. The distance from the top of the second baffle to the concrete cushion layer is less than the distance from the top of the first baffle to the concrete cushion layer;

[0022] And, a second wave-resistant hole that penetrates up and down is reserved and opened on the concrete cushion layer between the first baffle and the second baffle;

[0023] And, the bottom of the concrete cushion layer is prefabricated into a shape with a plurality of grooves.

[0024] Preferably, the filling method of various seeds and nutrients in step five includes: mixing the corresponding seeds, nutrients, and cellulose supports, sub-packaging them into a plurality of woven bags and sealing them, and filling the plurality of woven bags into the inner cylinder in sequence.

[0025] The present invention has at least the following beneficial effects: By organically establishing three plant growth modes according to the fluctuation range of the water level line, it is beneficial to the precise layout of multiple ecosystems, and is beneficial to the coordinated growth of multiple ecosystems. In addition, the two planting forms of the planting tube unit and the planting frame are adopted to overcome the defect of being washed off by the water flow. Especially in the initial stage of reconstruction, the plant seeds and seedlings of each ecosystem are very fragile, and the survival rate is greatly affected by the water flow.

[0026] Other advantages, objectives, and features of the present invention will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic side structure diagram of the transition zone of one of the technical solutions of the present invention;

[0028] Figure 2Detail view of the planting tube unit of one of the technical solutions of the present invention;

[0029] Figure 3 Detail view of the installation cylinder of one of the technical solutions of the present invention;

[0030] Figure 4 Side structure schematic diagram of the planting frame unit of one of the technical solutions of the present invention;

[0031] Figure 5 Top view of the planting frame unit of one of the technical solutions of the present invention. Specific implementation manners

[0032] The following further describes the present invention in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0033] It should be noted that, unless otherwise specified, the experimental methods described in the following implementation schemes are all conventional methods, and the reagents and materials, unless otherwise specified, can all be obtained from commercial channels; in the description of the present invention, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0034] As Figures 1 to 5 shown, the present invention provides a method for reconstructing a lake transition zone, including the following steps:

[0035] Step 1: Build a concrete slope 1 along the direction from both banks of the lake to the center of the lake. The concrete slope 1 is preferably built in an L-shaped manner, that is, a horizontal connection section, a slope section, and a horizontal extension section are built in sequence along the direction from the lake shore to the center of the lake. The horizontal connection section and a part of the slope section are located above the fluctuation range of the lake water level and are used to carry the growth of aquatic plants. The horizontal extension section and a part of the slope section are located below the fluctuation range of the lake water level and are used to carry the growth of amphibious plants and underwater plants. The segmented setting is beneficial to the precise layout of multiple ecosystems and the coordinated growth of multiple ecosystems.

[0036] Step 2: Lay a gravel layer 2 on the upper surface of the concrete slope 1. The gravel layer 2 is bonded with a gelling agent, which is usually obtained by mixing cement, fly ash, and water, and then mixed evenly with gravel, and obtained as the gravel layer 2 after drying. Among them, the gravel preferably has a particle size range of 3-10 cm. Numerous gaps are formed in the gravel layer 2 for the growth of the roots of plants in various ecosystems. The use of a gelling agent for bonding is to improve the anti-scouring ability of the gravel layer 2 and reduce the loss of gravel.

[0037] Step 3: Set up the aquatic ecological layer, amphibious ecological layer, and underwater ecological layer according to the water level fluctuation range of the lake. Among them, the area above the water level fluctuation range is the aquatic ecological layer, the area below the water level fluctuation range is the underwater ecological layer, and the area between the two is the amphibious ecological layer. Since the degree of water level fluctuation in each lake is different, the water level fluctuation range is also different. Generally, the average range of water level fluctuation in the lake to be built in the next 3 to 5 years is used for setting. Aquatic plants, plants that can grow both on land and in water, and underwater plants are planted in the aquatic ecological layer, amphibious ecological layer, and underwater ecological layer respectively. Figure 1 The three lines in it are the upper limit 100 of water level fluctuation, the lower limit 300 of water level fluctuation, and the normal water level line 200 respectively.

[0038] Step 4: Lay a soil layer 3 on the upper surface of the gravel layer 2 within the range of the aquatic ecological layer. Correspondingly, a plurality of planting tube reserved holes are reserved at intervals on the gravel layer 2 and the soil layer 3. A planting tube unit 5 is detachably installed in the planting tube reserved holes. Aquatic plant seeds and nutrients are filled in the planting tubes. A water diversion structure 6 is buried in the gravel layer 2 to divert water to the planting tube unit 5. The thickness of the soil layer 3 is usually 15 - 25 cm to meet the growth needs of aquatic plants. The detachable installation method of the planting tube unit 5 can replace the planting varieties according to the needs of landscape construction.

[0039] Step 5: A plurality of fixed columns 4 are pre-buried in the gravel layer 2 and the concrete layer within the range of the amphibious ecological layer and the underwater ecological layer. A plurality of planting frame units 7 are respectively fixed on the plurality of fixed columns 4. Amphibious plant seeds and nutrients are filled in the planting frame units 7 located in the amphibious ecological layer, and underwater plant seeds and nutrients are filled in the planting frame units 7 located in the underwater ecological layer. Due to the scouring effect of the water existing in the lake, the method of using the fixed columns 4 to fix the planting frame units 7 is beneficial to improving the stability of the planting frame units 7. The planting form of the planting frame units 7 is beneficial to the ecological stability of underwater plants and is not easily washed off by the water flow. Especially in the initial stage of reconstruction, the plant seeds and seedlings of each ecosystem are very fragile, and the survival rate is greatly affected by the water flow.

[0040] In the above technical solution, by establishing three plant growth modes organically according to the water level fluctuation range, it is beneficial to the precise layout of multiple ecosystems, and beneficial to the coordinated growth of multiple ecosystems. And by adopting two planting forms of the planting tube unit 5 and the planting frame, the defect of being washed off by the water flow is overcome. Especially in the initial stage of reconstruction, the plant seeds and seedlings of each ecosystem are very fragile, and the survival rate is greatly affected by the water flow.

[0041] In another technical solution, the planting tube reserved holes in Step 4 are cylindrical. The planting tube unit 5 in Step 4 includes:

[0042] The installation cylinder 51 extends coaxially into the reserved hole of the planting tube. The bottom of the installation cylinder 51 is closed. A plurality of water inlet holes 52 and at least one water diversion connection port 53 are reserved on the side wall of the installation cylinder 51, and the water diversion connection port 53 is connected to the water diversion structure 6;

[0043] The water absorption layer 54 is laid on the inner side wall of the installation cylinder 51; the water absorption layer 54 generally adopts multiple layers of non-woven fabrics, and waste cotton cloth, old cotton, and shredded old clothes are filled between the non-woven fabrics. The raw materials of waste cotton cloth, old cotton, and shredded old clothes mainly come from waste recycling.

[0044] The inner cylinder 55 extends coaxially into the column formed by the water absorption layer 54. A plurality of water inlet holes 52 are reserved on the side wall of the inner cylinder 55, and aquatic plant seeds and nutrient agents are filled in the inner cylinder 55.

[0045] The above solution provides an implementation method of the planting tube unit 5. The installation cylinders 51 are distributed in the soil layer 3 and the gravel layer 2. The gravel layer 2 is beneficial to the fixation of the installation cylinder 51, so as to limit the position of the inner cylinder 55. The soil layer 3 has rich nutrient resources. With the assistance of water, the nutrients in the soil layer 3 pass through the water inlet holes 52 of the installation cylinder 51 and the water absorption layer 54, and finally enter the inner cylinder 55, so as to provide nutrients for the aquatic plant seeds. The water of the aquatic plants is mainly the water led from the lake by the water diversion structure 6 and reaches the aquatic plant seeds through the water absorption layer 54.

[0046] The planting tube unit 5 in step four further includes an annular tube cover 56 with threaded holes. A protective net 73 is laid and fixed in the hollow part in the middle of the tube cover 56. The tube cover 56 is fixed to the installation cylinder 51 by means of bolts and nuts. By setting the tube cover 56, the water absorption layer 54 can be protected. The main function of the protective net 73 is to prevent trampling and being blown away by wind and waves during the seedling stage.

[0047] In another technical solution, the water diversion structure 6 in step four includes a plurality of water diversion pipes 61 and water absorption materials 62 filled in the water diversion pipes 61. A plurality of through holes are opened on the side wall of the water diversion pipe 61. At least one water diversion pipe 61 is connected between two adjacent planting tubes in the direction from both banks of the lake to the center of the lake. The end of the water diversion pipe 61 is docked with the water diversion connection port 53 of the inner cylinder 55. The water diversion pipe 61 closest to the lake extends out of the gravel layer 2 and extends into the water of the lake.

[0048] In the above technical solution, an implementation manner of the water diversion structure 6 is provided. Through the water diversion structure 6, the water in the lake can be finally introduced into the inner cylinder 55 to provide water for the aquatic plants, so that the aquatic plants can absorb sufficient water without artificial irrigation. The water diversion pipe 61 is usually made of a rigid plastic pipe, and the aperture range of the through hole is preferably 3-10 mm, which is beneficial for water to enter through the through hole and be absorbed by the water-absorbing material 62. The water-absorbing material 62 can be made of straw, fallen leaves, dead branches, etc. after being slightly pulverized, and mixed with some shredded cotton cloth, old cotton, and shredded old clothes.

[0049] In another technical solution, the planting frame unit 7 in step five includes a precast concrete cushion layer 71, with a planting groove 72 opened in the middle of its upper surface. Amphibious plant seeds and nutrients, or underwater plant seeds and nutrients are filled in the planting groove. A protection net 73 is covered on the planting groove 72. Among them, the concrete cushion layer 71 and the fixed column 4 are fixed by pouring concrete, and the lower end of the fixed column extends into the bottom of the lake. The combined setting of the planting groove 72 and the protection net 73 can effectively block the impact of water flow on the plants in the planting groove 72, thereby improving the survival rate of the seeds.

[0050] Steel chains are embedded in the concrete cushion layer 71, and the steel chains between several adjacent concrete cushion layers 71 are locked together, which can improve the wave resistance of the concrete cushion layer 71.

[0051] A plurality of seedling protection and wave blocking structures 8 are preset on the peripheral edge of the upper surface of the concrete cushion layer 71. The seedling protection and wave blocking structure 8 includes:

[0052] The first baffle 81, which is in a quasi-cylindrical shape. The side of the first baffle 81 close to the lake shore is higher than the side close to the lake center, and both sides of the first baffle 81 are convex towards the lake center. The first baffle 81 is provided with a first wave resistance hole 82 along the direction of the center connection line of its two sides; the shape of the first baffle 81 can well play a role in diverting and cutting the waves and reducing the residual energy of the water flow.

[0053] The second baffle 83, which is arranged on the side close to the lake shore relative to the first baffle 81. The distance from the top of the second baffle 83 to the concrete cushion layer 71 is less than the distance from the top of the first baffle 81 to the concrete cushion layer 71; the second baffle 83 and the first baffle 81 are combined to form a height difference, forming a micro-droplet energy dissipation.

[0054] And, a second wave resistance hole 84 that penetrates up and down is reserved on the concrete cushion layer 71 between the first baffle 81 and the second baffle 83; the second wave resistance hole 84 is used to discharge the seepage pressure and surplus accumulated water at the bottom of the concrete, thereby reducing the pulsation effect, so as to cope with larger fluctuations in water depth and water pressure.

[0055] Moreover, the bottom of the concrete cushion layer 71 is prefabricated into a shape with multiple grooves, which makes the connection between the concrete cushion layer 71 and the gravel layer 2 closer and improves the stability of the concrete cushion layer 71.

[0056] In the above technical solution, due to the influence of seasons, the waves of the lake are sometimes large and sometimes small. When the waves are large, the impact on plants is fatal. Therefore, by setting up a seedling protection and wave-blocking structure 8 near the planting trough 72, the energy can be effectively dissipated and the waves can be blocked, protecting the plants in the planting trough 72 and improving the safety of the entire lakeshore.

[0057] In another technical solution, the filling method of various seeds and nutrient agents in step five includes: mixing the corresponding seeds, nutrient agents, and cellulose supports, sub-packaging them into multiple woven bags and sealing them, and then filling the multiple woven bags into the inner cylinder 55 in sequence. ETS complex bacteria can also be mixed in the woven bags. ETS complex bacteria usually include various functional bacteria such as actinomycetes, ammonia nitrogen decomposing bacteria, nitrifying bacteria, denitrifying bacteria, nitrite degrading bacteria, fiber decomposing bacteria, various photosynthetic bacteria, various lactic acid bacteria, low-temperature decomposing bacteria, and halophilic bacteria, which can quickly degrade ammonia nitrogen, total phosphorus, COD and other pollutants in the lake, restore the self-purification ability of the water body, reduce the content of water body sludge, reduce harmful gases, and ETS complex bacteria can provide necessary nutrients for the growth of plant roots. Filling each raw material into the inner cylinder 55 in the form of a sealed woven bag reduces the influence of the external environment on the seeds and protects their healthy germination and growth.

[0058] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated and described examples here.

Claims

1. A method for reconstructing a lake transition zone, characterized in that, The following steps are involved: Step 1: Build concrete slopes along both sides of the lake toward the center of the lake; Step 2: laying a crushed stone layer along the upper surface of the concrete slope, wherein the crushed stone layer is bonded by a gelling agent; Step 3: according to the fluctuation range of the water level of the lake, an above-water ecological layer, an amphibious ecological layer and an underwater ecological layer are set, wherein the above-water ecological layer is the above-water ecological layer, the below-water ecological layer is the underwater ecological layer, and the layer between the above-water ecological layer and the underwater ecological layer is the amphibian ecological layer; Step 4: a soil layer is laid on the upper surface of the gravel layer within the aquatic ecological layer, and a plurality of reserved holes for planting tubes are reserved on the gravel layer and the soil layer at intervals, and planting tube units are detachably installed in the reserved holes for planting tubes, and aquatic plant seeds and nutrients are filled in the planting tubes, and a water diversion structure is buried in the gravel layer to divert water to the planting tube units; the gravel layer is bonded with a cement and fly ash mixed gelling agent; a protective net is provided in the middle of the pipe cover; the reserved holes for planting tubes are cylindrical, and the planting tube units include: An installation tube coaxially extends into the reserved hole of the planting tube, the bottom of the installation tube is closed, and a plurality of water inlet holes and at least one water diversion connection port are reserved on the side wall of the installation tube, and the water diversion connection port is connected to the water diversion structure; A water absorbing layer, which is laid on the inner wall of the installation tube; The inner cylinder coaxially extends into the column surrounded by the water absorbing layer, and a plurality of water inlet holes are reserved on the side wall of the inner cylinder. The seeds of aquatic plants and nutrients are filled in the inner cylinder; The planting tube unit also includes an annular tube cover with threaded holes, a protective net is laid flat and fixed in the hollow part in the middle of the tube cover, and the tube cover and the installation tube are fixed by bolts and nuts; The water diversion structure includes a plurality of water diversion pipes and water absorbing materials filled in the water diversion pipes, and a plurality of through holes are opened on the side walls of the water diversion pipes; Step 5: Pre-embed a plurality of fixed columns on the gravel layer and the concrete layer within the amphibian ecological layer and the underwater ecological layer, respectively fix a plurality of planting frame units on the plurality of fixed columns, fill the planting frame units located in the amphibian ecological layer with amphibian plant seeds and nutrients, and fill the planting frame units located in the underwater ecological layer with underwater plant seeds and nutrients.

2. The lake transition zone reconstruction method according to claim 1, characterized in that, The concrete slope is constructed to include a horizontal connecting section, a slope section and a horizontal extension section in sequence from the lake shore to the lake center.

3. The method for reconstructing a lake transition zone according to claim 1, wherein At least one water diversion pipe is connected between two adjacent planting tubes along both banks of the lake toward the center of the lake, and the end of the water diversion pipe is butt-jointed with the water diversion connection port of the inner tube. The water diversion pipe located closest to the lake extends out of the gravel layer and into the water of the lake.

4. The method for reconstructing a lake transition zone according to claim 1, wherein The planting frame unit in step five includes a prefabricated concrete cushion layer with a planting groove in the middle of the upper surface thereof. The seed groove is filled with amphibian plant seeds and nutrients, or underwater plant seeds and nutrients, and a protective net is covered on the planting groove. The concrete cushion layer and the fixed column are fixed by pouring concrete, and the lower end of the fixed column extends to the bottom of the lake.

5. The lake transition zone reconstruction method according to claim 4, characterized in that, The invention also includes presetting a plurality of seedling protection and wave blocking structures on the periphery of the upper surface of the concrete cushion layer in step 5, wherein the seedling protection and wave blocking structures include: The first baffle plate, which is approximately cylindrical in shape, has a side closer to the lake shore higher than a side closer to the lake center, and both sides of the first baffle plate are convex towards the lake center. A first wave-resistant hole is formed in the first baffle plate along the direction of the center connection line of its two sides; The second baffle plate, which is arranged on a side closer to the lake shore relative to the first baffle plate, has a distance from the top of the second baffle plate to the concrete cushion less than a distance from the top of the first baffle plate to the concrete cushion; And, a second wave-resistant hole that penetrates up and down is reserved and formed in the concrete cushion located between the first baffle plate and the second baffle plate; And, the bottom of the concrete cushion is prefabricated into a shape with a plurality of grooves.

6. The method for reconstructing a lake transition zone according to claim 1, wherein, The filling method of various seeds and nutrient agents in step five includes: mixing the corresponding seeds, nutrient agents, and cellulose supports, sub-packaging them into a plurality of woven bags and sealing them, and sequentially filling the plurality of woven bags into the inner cylinder.

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