CN115595932B

CN115595932B - Ecological control device for river, lake, reservoir and bank slopes and construction method

Info

Publication number: CN115595932B
Application number: CN202211032700.XA
Authority: CN
Inventors: 任杰; 唐译; 李萌; 陈澄昊; 钱彬
Original assignee: Logistics Service Center Of Jiangsu Provincial Department Of Water Resources; Nanjing Hydraulic Research Institute of National Energy Administration Ministry of Transport Ministry of Water Resources
Current assignee: Logistics Service Center Of Jiangsu Provincial Department Of Water Resources; Nanjing Hydraulic Research Institute of National Energy Administration Ministry of Transport Ministry of Water Resources
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-10-27
Anticipated expiration: 2042-08-26
Also published as: CN115595932A

Abstract

The invention relates to an ecological control device for a river, lake and reservoir bank slope, which comprises a fixing structure, a weight structure, a vegetation structure, a silt filling structure and a silt flushing and oxygen supplying structure, wherein the fixing structure is used for fixing the ecological control device on the bank slope; the weight structure is used for enabling the ecological control device to be tightly attached to and fixed on the bottom bank slope of the river, the lake and the reservoir; the inner space of the plant growing structure is used for planting plants and providing propagation and growth environments for fishes and the like; the silt filling structure is used for filling silt slurry and planting soil slurry into the ecological control device; the silt flushing oxygen supply structure is used for flushing out silt on the ecological control device and providing oxygen for plant growth. The invention overcomes the defects that the existing revetment has raw appearance, is cold and hard, can not meet deep water conditions, can not prevent and treat siltation and the like because river, lake and reservoir water and bank slope groundwater are exchanged, organically combines revetment scouring treatment, revetment caving treatment, siltation treatment and ecological treatment, and has the characteristics of simple structure and favorable technical popularization.

Description

Ecological control device for river, lake, reservoir and bank slopes and construction method

Technical Field

The invention relates to the technical field of ecological management of rivers, lakes and reservoirs, in particular to an ecological control device for bank slopes of the rivers, the lakes and reservoirs and a construction method.

Background

The rainwater and the water flow of the river, the lake and the reservoir usually can cause scouring, erosion, bank collapse and other damages to the bank slope, and meanwhile, the problem of river, the lake and the reservoir siltation is also serious because the water flow of the river, the lake and the reservoir carries a large amount of sediment. Aiming at the problems of bank slope scouring, erosion and bank collapse, the bank slope control is carried out by engineering measures at present. At present, the ecological control modes of the river and lake bank slope mainly comprise the following steps: 1) The method has long use history, but has poor timeliness, a large amount of ripraps are usually required to be carried out every year, and the engineering cost is extremely high; 2) The conventional shore protection structure with characteristics of green, cold and hard is adopted, such as a grouted stone block, a dry stone block, cast concrete, a hinged concrete sink row and the like. The method can effectively solve the problems of scouring, erosion and bank collapse, permanently destroy the original ecological environment of the river, prevent the water system exchange between the groundwater of the bank slope and the water bodies of the river, lake and reservoir, and contradict the ecological water conservancy requirement; 3) The reinforced net or the geotechnical net is used for wrapping concrete blocks or stone blocks and the like, so that huge engineering cost caused by repeated stone throwing can be avoided, meanwhile, when aquatic plants are planted in the stone blocks, the ecological water conservancy requirement can be attached, but the method is only suitable for shallow water requirements, and when the method is used in deep water conditions, the problems that the stability of engineering is difficult to grasp, the engineering quantity is huge, the engineering cost is high and the like exist.

Moreover, the engineering measures can only solve the problems of bank slope scouring, erosion and bank collapse to a certain extent, and cannot solve the problem of river, lake and reservoir siltation. Aiming at the problem of river and lake reservoir siltation, the dredging is carried out in the following two engineering modes at present: 1) The manual/mechanical excavating dredging has wide application range, but can only be carried out after a certain degree of sedimentation, and can not prevent sedimentation; 2) The reservoir water delivery is used for flushing, and the reservoir water delivery flushing requires water regulation, so that the application conditions are strict, and the application range is small. Likewise, the two modes can only solve the problem of river and lake reservoir siltation to a certain extent, and can not solve the problems of bank slope scouring, erosion and bank collapse.

Therefore, the current ecological control mode of the river and lake bank slope has the defects that the ecological control mode cannot be used for deep water conditions, water system exchange between the bank slope and a water body is hindered, ecological water conservancy requirements cannot be achieved, or the problems of river and lake bank scouring, bank collapse and siltation cannot be solved at the same time.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the problems existing in the prior art, and the invention provides the ecological prevention and treatment device for the bank slope of the river, the lake and the reservoir and the construction method, which overcome the defects that the existing revetment has raw appearance, is cold and hard, cannot meet deep water conditions, prevents the exchange of water in the river, the lake and the reservoir and groundwater in the bank slope, cannot prevent and treat siltation and the like, and organically combine the revetment scouring treatment, the bank collapse treatment, the siltation treatment and the ecological treatment, and have the characteristics of simple structure and favorable technical popularization.

In order to solve the technical problems, the invention provides an ecological prevention and treatment device for a river, a lake, a reservoir and a bank slope, which comprises:

the fixed beam is arranged on a bank slope of a river, a lake and a reservoir, and is provided with a mud filling hole and a raw soil filling hole;

the pressing structure comprises at least two geotechnical pipe bags and connectors, wherein the connectors are connected between the at least two geotechnical pipe bags so that the at least two geotechnical pipe bags are connected in a row, one end of each geotechnical pipe bag is provided with an opening, the opening end is connected with a mud filling hole, and a pipe bag mud flushing hole is formed in a water soaking section of each geotechnical pipe bag;

the vegetation structure comprises an upper geotextile and a lower geotextile, wherein the upper geotextile and the lower geotextile are arranged between two adjacent geotextile bags and are used for forming a cavity with a cavity inside, one end of the cavity is provided with an opening, and the opening end is connected with a mud hole filled with vegetation soil;

the silt filling structure is used for filling silt slurry into the geotechnical pipe bags or filling plant soil slurry into the cavities of the cavities;

the utility model provides a silt oxygen supply structure, it includes air pump, gas-supply pipe, silt flushing pipe and shower nozzle, the gas-supply pipe is connected to the air pump, the silt flushing pipe is connected to the gas-supply pipe, the silt flushing pipe sets up in geotechnique's pipe bag, pipeline silt flushing hole has been arranged according to the same interval with pipe bag silt hole to the section of soaking of silt flushing pipe, and pipeline silt flushing hole connects the shower nozzle.

In one embodiment of the invention, the anchor pile is arranged on the river, lake and reservoir bank slope, the anchor pile is connected with the anchor rope, and the anchor rope is connected with the fixed beam.

In one embodiment of the present invention, the plant-growing structure further includes an upper geogrid and a lower geogrid, which are respectively and correspondingly disposed at bottoms of the upper geotextile and the lower geotextile.

In one embodiment of the invention, the mud filling structure comprises a mud conveying pump and a mud conveying pipe, wherein the mud conveying pump is connected with the mud conveying pipe, the mud conveying pipe is connected with the mud filling mud hole or the raw soil filling mud hole, and mud is filled into the geotechnical pipe bag or raw soil filling mud is filled into the cavity of the cavity through the mud conveying pipe.

In one embodiment of the present invention, the dredging and oxygen supplying structure further comprises a valve, and the valve is arranged on the gas pipe.

In one embodiment of the invention, the ballast weight structure further comprises a support tripod, the support tripod being disposed inside the geotextile tube bag.

In one embodiment of the present invention, the support tripod has a receiving portion, and the receiving portion is in a circular arc shape.

In one embodiment of the invention, the flushing pipe is arranged on the accommodating part of the supporting tripod, and the spray head arranged on the flushing pipe extends to the outside through the pipe bag flushing hole.

In one embodiment of the invention, the side wall of the spray head is provided with air injection holes, and the air injection direction of the air injection holes is the same as the water flow direction.

In addition, the invention also provides a construction method of the ecological control device for the river, lake, reservoir and bank slope, which comprises the following steps:

determining a protection range on a bank slope of a river, a lake and a bank, wherein the protection range is in a length direction along a water flow direction, and a width direction is perpendicular to the water flow direction;

setting an anchor pile and a mounting fixed beam on a bank slope in a protection range, and connecting the fixed beam and the anchor pile by using anchor cables;

determining the length of a geotechnical pipe bag according to the width of a protection range, manufacturing the geotechnical pipe bag, reserving pipe bag dredging holes in the soaking section of the geotechnical pipe bag, manufacturing dredging pipes at the same time, arranging pipeline dredging holes in the soaking section of the dredging pipes at the same interval with the pipe bag dredging holes, loading a support tripod and the dredging pipes into the geotechnical pipe bag, arranging a spray head on the pipeline dredging holes through the pipe bag dredging holes, and fixing the geotechnical pipe bags in rows by using connectors, wherein the lengths after the rows are the same as the lengths of the protection range;

sequentially installing a lower-layer geogrid, a lower-layer geotextile, an upper-layer geogrid and an upper-layer geotextile between the geotextile bags to form a plant-growing structure;

installing the open end of the geotechnical pipe bag on a sludge filling mud hole of the fixed beam, and respectively filling sludge and planting soil mud into the geotechnical pipe bag and the planting structure by using a sludge filling structure;

after the filling work is completed, the filling structure is removed and connected with the flushing oxygen supply structure, when oxygen supply is needed, the air pump is started, the valve is opened, air is input into the flushing pipe through the air pipe, flushing or oxygen supply is carried out through jet of the jet head, and when the fouling is generated, the flushing strength is improved.

Compared with the prior art, the technical scheme of the invention has the following advantages:

the invention overcomes the defects that the existing revetment has raw appearance, is cold and hard, can not meet deep water conditions, can not prevent and treat siltation and the like because river, lake and reservoir water and bank slope groundwater are exchanged, organically combines revetment scouring treatment, revetment caving treatment, siltation treatment and ecological treatment, and has the characteristics of simple structure and favorable technical popularization.

Drawings

In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

FIG. 1 is a schematic view of the use scenario of the present invention.

FIG. 2 is a schematic illustration of the use of the present invention in a silt charging configuration.

Fig. 3 is a schematic view of the mounting of the fixing structure of the present invention.

FIG. 4 is a schematic illustration of the placement of mud filled holes and mud filled with planting soil on a fixed beam of the present invention.

Fig. 5 is a schematic view of the inventive weight construction arrangement.

Fig. 6 is a schematic cross-sectional view of fig. 5 in accordance with the present invention.

Fig. 7 is a schematic view of a support tripod of the present invention.

Fig. 8 is a schematic cross-sectional view of a plant-growing structure.

FIG. 9 is a schematic diagram showing the arrangement of the flushing oxygen supply structure of the present invention.

Fig. 10 is a schematic view of the structure of the spray head of the present invention.

FIG. 11 is a schematic cross-sectional view of FIG. 1 in accordance with the present invention.

FIG. 12 is a schematic view of the upper end of the geotextile tube bag of the present invention protruding from the vegetation structure.

FIG. 13 is a schematic view of the spray head installation of the present invention.

Wherein reference numerals are as follows: 2. a weight structure; 3. a plant growing structure; 4. a silt filling structure; 5. a dredging oxygen supply structure; 11. anchoring the pile; 12. a fixed beam; 13. an anchor cable; 21. a geotechnical pipe bag; 22. supporting a tripod; 23. a connector; 24. punching a silt hole of the pipe bag; 31. an upper geotextile; 32. an upper geogrid; 33. a lower geogrid; 34. a lower geotextile; 41. a slurry pool; 42. a slurry pump; 43. a slurry conveying pipe; 51. an air pump; 52. a gas pipe; 53. a valve; 54. a dredging pipe; 55. punching a silt hole of a pipeline; 56. a spray head; 121. filling a mud hole; 122. filling with a raw soil slurry hole.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.

Referring to fig. 1, an embodiment of the present invention provides an ecological control device for a river, a lake and a bank slope, which includes a fixing structure, a weight structure 2, a plant-growing structure 3, a silt-filling structure 4 and a silt-flushing oxygen-supplying structure 5, wherein the fixing structure is used for fixing the ecological control device on the bank slope; the weight structure 2 is used for enabling the ecological control device to be tightly attached to and fixed on the bottom bank slope of the river, the lake and the reservoir; the inner space of the plant growing structure 3 is used for planting plants and providing propagation and growth environments for fishes and the like; the silt filling structure 4 is used for filling silt slurry and planting soil slurry into the ecological control device; the silt flushing and oxygen supplying structure 5 is used for flushing out sediments on the ecological control device, supplying oxygen for plant growth and guaranteeing the flowing water, water storage and ecological functions of rivers, lakes and reservoirs.

The sludge is pollution-free waste foundation soil generated in the urban construction process, and is formed by mixing the sludge with water of rivers, lakes and reservoirs.

The plant soil slurry is pollution-free waste soil generated in the urban construction process, and is formed by mixing the plant soil slurry with river, lake and reservoir water and aquatic plant seeds.

Further, the seeds in the plant soil slurry can be submerged plant seeds, emergent plant seeds, terrestrial plant seeds and the like.

Further, the water content in the mud preparation process is generally 80% -120%, and the control standard is that the fluid state can be pumped.

Furthermore, the mixing amount of the greening waste in the preparation process of the vegetation soil slurry is determined according to the water environment, the self-nutrition condition of the sludge and the requirements of related parties, and the greening waste can be generally configured according to 5-20% of the mass of the dried sludge.

Fig. 2 is a schematic view of the dredging structure 4 according to the present invention, wherein the dredging structure 4 comprises:

a slurry tank 41 for producing sludge slurry and vegetation soil slurry;

a slurry pump 42 for pumping sludge slurry and vegetation soil slurry;

a slurry pipe 43 for conveying sludge and vegetation soil slurry.

Specifically, the slurry pump 42 is connected with a slurry conveying pipe 43, the slurry conveying pipe 43 is connected with a slurry pond 41, the slurry conveying pipe 43 is connected with the slurry filling slurry hole or the slurry filling raw soil hole, and the slurry conveying pipe 43 is used for filling slurry into the geotechnical pipe bag 21 or filling the cavity of the planting structure 3 with the raw soil slurry.

Further, the silt filling structure (4) is removed after the silt filling work is finished.

Fig. 3 is a schematic installation view of the fixing structure of the present invention, and the fixing structure 1 includes:

the anchoring piles 11 are inserted into the soil body of the bank slope and play a role of anchoring;

a fixed beam 12;

anchor lines 13 for connecting the anchor piles 11 and the fixing beams 12.

Further, as shown in fig. 4, the fixed beam 12 is provided with a mud filling hole 121 and a raw soil filling hole 122.

Fig. 5 is a schematic view of the arrangement of the weight structure 2 according to the present invention, fig. 6 is a schematic view of the section of fig. 5 according to the present invention, fig. 7 is a schematic view of the support tripod according to the present invention, and the weight structure 2 includes, in combination with fig. 5, 6 and 7:

the geotextile tube bag 21 is a common geotextile, has strong tensile capacity and has the performance of water permeation and mud impermeability;

a support tripod 22 installed inside the geotechnical pipe bag 21 for supporting;

a connector 23 for connecting a plurality of geotextile bags 21 in a row, the connector 23 being a hard material;

the pipe bag dredging holes 24 are arranged at a certain interval in the water soaking section of the geotechnical pipe bag 21.

Further, the diameter of the geotechnical pipe bag 21 is 10 cm-30 cm, so that a thin-layer ecological control device is formed, and influence on river, lake and reservoir, especially river water passing capacity is reduced.

Further, the geotechnical pipe bags 21 are selected to have a mass per unit area of not less than 200g/m ² Is made of polypropylene woven cloth.

Further, the pitch of the connectors 23 is about 1m to 3m.

Fig. 8 is a schematic cross-sectional view of a plant-growing structure 3, said plant-growing structure 3 comprising:

the upper geotextile 31 is a common geotextile with strong tensile strength and water-permeable and mud-impermeable properties, is adhered between two geotextile bags 21, and is torn off after plant seeds germinate in the plant soil slurry;

the upper geogrid 32, which is a common geogrid, has strong tensile strength;

the lower geogrid 33 is a common geogrid and has strong tensile strength;

the lower geotextile 34, which is a common geotextile, has high tensile strength and is permeable to water and mud.

Further, the upper geogrid 32 and the lower geogrid 33 are bidirectional geogrids, and the rib spacing of the grids is 5 cm-20 cm.

Further, the clear distance between the geotextile bags 21 is 20cm to 40cm for providing a sufficient ecological greening area.

Fig. 9 is a schematic diagram showing an arrangement of a dredging oxygen supply structure 5 according to the present invention, the dredging oxygen supply structure 5 comprising:

an air pump 51 for pumping the gas for flushing and growing plants;

a gas pipe 52 for conveying gas for flushing and growing plants;

a valve 53 for controlling the output intensity of the gas for flushing and plant growth;

a flushing pipe 54 installed in the geotechnical pipe bag 21 and provided on the receiving part of the support tripod 22;

pipeline dredging holes 55 arranged at the same intervals as the pipe bag dredging holes 24 in the water-immersed section of the dredging pipe 54;

the spray head 56 is used for dredging or supplying oxygen to plants through air injection, the air injection direction is the same as the water flow direction, and the structural form of the spray head is shown in fig. 10.

Further, the uniform ends of the geotechnical pipe bag 21 and the vegetation structure 3 are open and closed, the open ends are positioned on the bank slope and used for respectively filling the interior of the geotechnical pipe bag with sludge or vegetation soil slurry, and the closed ends are positioned under water to prevent the filled sludge or the vegetation soil slurry from running off.

For a more detailed description of the ecological control device of the present invention, fig. 11 is a schematic cross-sectional view of fig. 1 of the present invention, and the construction of the ecological control device of the present invention can be clearly seen.

In order to more clearly express the relationship between the geotechnical pipe bag 21, the plant-growing structure 3 and the fixed beam 12, fig. 12 shows a schematic view of the geotechnical pipe bag 21 protruding from the upper end of the plant-growing structure 3, the geotechnical pipe bag 21 and the fixed beam 12 are provided with mud filling holes 121 with the same diameter, the protruding end of the geotechnical pipe bag 21 is firmly fixed on the mud filling holes 121, the mud filling holes 121 are used for filling mud into the geotechnical pipe bag 21, the interval of the mud filling holes is the same as that between the geotechnical pipe bags 21, and the mud filling holes 122 are used for filling plant-growing soil mud into the plant-growing structure 3 and the interval of the mud filling plant-growing structure 3 is the same as that between the plant-growing structures 3.

To more clearly show the relationship between the spray head 56 and the pipe bag dredging holes 24 on the geotechnical pipe bag 21 and the pipe dredging holes 55 on the dredging pipe 54, a schematic diagram of spray head installation is drawn in fig. 13.

Corresponding to the embodiment of the system, the invention also provides a construction method of the ecological prevention device for the bank slope of the river, the lake and the bank, the method is realized by the ecological prevention device for the bank slope of the river, the lake and the bank, and the method comprises the following steps:

setting an anchor pile 11 and a mounting fixed beam 12 on a bank slope in a protection range, and connecting the fixed beam 12 and the anchor pile 11 by using an anchor cable 13;

determining the length of a geotechnical pipe bag 21 according to the width of a protection range, manufacturing the geotechnical pipe bag 21, reserving pipe bag dredging holes 24 in a water soaking section of the geotechnical pipe bag 21, manufacturing dredging pipes 54 at the same time, arranging pipe dredging holes 55 in the water soaking section of the dredging pipes 54 at the same interval as the pipe bag dredging holes 24, loading a support tripod 22 and the dredging pipes 54 into the geotechnical pipe bag 21, arranging a spray head 56 on the pipe bag dredging holes 55 through the pipe bag dredging holes 24, and fixing the geotechnical pipe bags 21 in pairs by using connectors 23, wherein the length after the lines are identical with the length of the protection range;

sequentially installing a lower-layer geogrid 33, a lower-layer geotextile 34, an upper-layer geogrid 31 and an upper-layer geotextile 32 between the geotextile bags 21 to form a vegetation structure 3;

the open end of the geotechnical pipe bag 21 is arranged on a mud filling mud hole 121 of the fixed beam 12, and mud and planting soil mud are respectively filled into the geotechnical pipe bag 21 and the planting structure 3 by using a mud filling structure 4;

after the filling work is completed, the filling structure 4 is removed and connected with the flushing oxygen supply structure 5, when oxygen supply is needed, the air pump 51 is started, the valve 53 is opened, air is input into the flushing pipe 54 through the air pipe 52, and the shower nozzle 56 is used for spraying air to flush or supply oxygen, so that the flushing strength is improved when the sludge is generated.

The specific operation method of the construction method of the river, lake and bank slope ecological control device provided by the invention is described in detail in a specific embodiment.

A typical river channel has the characteristics of flood-stage flushing and non-flood-stage sedimentation, the length of the protection range along the water flow direction is about 10m, the width of the protection range along the water flow direction is about 8m, about 4m of the protection range is positioned on the river channel bank slope, about 4m of the protection range is positioned on the river bed, the river channel slope ratio is about 1:2, the water depth of the river channel in the flood stage is about 1.5m, and the water depth of the river channel in the non-flood stage is about 0.5m.

An anchor pile 11 is arranged on the length boundary of a bank slope in a protection range, the anchor pile 11 is a reinforced concrete pipe pile, the diameter is 30cm, the length is 3m, the anchor pile is pressed into soil for 2m by adopting a static pressure method, a fixed beam 12 is installed, the length of the fixed beam 12 is 10m, the fixed beam 12 is connected with the anchor pile 11 by utilizing an anchor rope 13, a sludge filling slurry hole 121 and a raw soil filling slurry hole 122, the diameters of which are 20cm, are formed in the fixed beam 12, and the hole spacing is 20cm.

The geotechnical pipe bags 21 with the diameter of 20cm and the length of 8m are selected to manufacture the ecological control device. The geotechnical pipe bag 21 is selected to have the mass per unit area of 200g/m ² Is made of polypropylene woven cloth; the interval of the pipe bag dredging holes 24 on the geotechnical pipe bag 21 is 0.5m, the support tripod 22 and the dredging pipe 54 are arranged in the geotechnical pipe bag 21, the interval of the pipe dredging holes 55 on the dredging pipe 54 is also 0.5m, and the spray head 56 is arranged on the pipe dredging holes 55 through the pipe bag dredging holes 24; the geotextile bags 21 were installed at a pitch of 20cm, and the connectors 23 were installed at a pitch of 1m.

The lower layer geogrid 33, the lower layer geotextile 34, the upper layer geogrid 32 and the upper layer geotextile 31 are sequentially arranged between the geotextile bags 21 in a sticking way on two sides to form the vegetation structure 3.

The geotechnical pipe bag 21 is filled with sludge prepared by urban foundation pit excavation sludge, the water content of the sludge is 100%, the water content of the plant soil sludge is 100% and the plant waste scraps account for about 5% of the total weight of the dry sludge; when the plant soil slurry is filled, the plant soil slurry filled in the river bed part plant structure 3 is mixed with the black algae spores, and the plant soil slurry filled in the bank slope part plant structure 3 is mixed with reed seeds.

And the silt flushing oxygen supply structure 5 is installed and connected, the stability of the ecological control device is observed in the flood season, and the silt flushing oxygen supply structure 5 is timely started to flush silt in the non-flood season, so that the silt flushing strength is properly improved when siltation occurs.

After a flood period and a non-flood period, the ecological control device almost has no siltation phenomenon, and plants at the plant growing structure 3 grow well.

While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims

1. An ecological control device for a river, a lake, a reservoir and a bank slope, which is characterized by comprising:

2. The ecological control device for river, lake, reservoir and bank slopes according to claim 1, wherein: the anchor pile is arranged on the bank slope of the river, the lake and the reservoir, the anchor pile is connected with the anchor rope, and the anchor rope is connected with the fixed beam.

3. The ecological control device for river, lake, reservoir and bank slopes according to claim 2, wherein: the plant-growing structure further comprises an upper-layer geogrid and a lower-layer geogrid, and the upper-layer geogrid and the lower-layer geogrid are respectively and correspondingly arranged at the bottoms of the upper-layer geotextile and the lower-layer geotextile.

4. The ecological control device for river, lake, reservoir and bank slopes according to claim 1, wherein: the mud filling structure comprises a mud conveying pump and a mud conveying pipe, the mud conveying pump is connected with the mud conveying pipe, the mud conveying pipe is connected with the mud filling mud hole or the mud filling raw soil hole, and mud is filled into the geotechnical pipe bag or the cavity of the cavity is filled with the raw soil mud through the mud conveying pipe.

5. A river, lake, reservoir and bank slope ecological control device according to claim 3, wherein: the flushing oxygen supply structure also comprises a valve, and the valve is arranged on the gas pipe.

6. The ecological control device for river, lake, reservoir and bank slopes according to claim 5, wherein: the weight structure further comprises a support tripod, and the support tripod is arranged in the geotechnical pipe bag.

7. The ecological control device for river, lake, reservoir and bank slopes according to claim 6, wherein: the support tripod is provided with a containing part which is arc-shaped.

8. The ecological control device for river, lake, reservoir and bank slopes according to claim 7, wherein: the flushing pipe is arranged on the accommodating part of the supporting tripod, and the spray heads arranged on the flushing pipe extend to the outside through the pipe bag flushing holes.

9. The ecological control device for river, lake, reservoir and bank slopes according to claim 1 or 8, wherein: the side wall of the spray head is provided with a gas spraying hole, and the gas spraying direction of the gas spraying hole is the same as the water flow direction.

10. A construction method of a river, lake, reservoir, bank slope ecological control device according to any one of claims 6 to 8, characterized in that the method comprises: