CN116988429B - River course bank slope ecological protection structure and dredging method - Google Patents
River course bank slope ecological protection structure and dredging method Download PDFInfo
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- CN116988429B CN116988429B CN202311245826.XA CN202311245826A CN116988429B CN 116988429 B CN116988429 B CN 116988429B CN 202311245826 A CN202311245826 A CN 202311245826A CN 116988429 B CN116988429 B CN 116988429B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 29
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 239000010802 sludge Substances 0.000 claims description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 9
- 244000025254 Cannabis sativa Species 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 235000015097 nutrients Nutrition 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 3
- 230000007423 decrease Effects 0.000 claims 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000004575 stone Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Botany (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a river bank slope ecological protection structure and a dredging method, which comprises two separated pier bodies, wherein the two separated pier bodies are respectively positioned at the upstream and the downstream of a river and are used for intercepting the river, two rows of support piles are arranged between the two separated pier bodies, the two rows of support piles are respectively arranged on two banks of the river, vegetation coverage areas are respectively arranged on one sides of the two rows of support piles, which are opposite to each other, a plurality of partition walls which face the same direction as the separated pier bodies are arranged in the vegetation coverage areas, the partition walls are deeply embedded into the river bank slope, revetment retaining walls are respectively built between the two adjacent partition walls, and the revetment retaining walls are arranged in a gradient mode. Through using disconnect-type pier body assembled form, realize the reuse of prefab, obvious saving cost and improve follow-up demolishment efficiency to can prepare a plurality of prefabs, when dredging, can concentrate the silt in the disconnect-type pier body department of low reaches, block silt through the prefab.
Description
Technical Field
The invention belongs to the technical field of river protection, and particularly relates to a river bank slope ecological protection structure and a dredging method.
Background
Currently, two types of protection measures are needed for river bank slopes, namely hard protection measures and ecological protection measures. The hard protective measures mainly adopt materials such as stone, cement concrete and the like to reinforce the river bank slope, have the characteristics of high safety, good integrity, quick effect and the like, but lack air permeability and water permeability, and separate the water-gas exchange and circulation of the revetment soil body and the upper space. The protection measures can not provide basic conditions for the survival of plants and animals, and the ecological environment and natural landscape of the river channel are greatly destroyed; the ecological protection measures mainly reduce the instability of the slope surface and the slope feet of the river channel by combining plants with civil engineering materials, and realize a method for coexistence of various organisms; the bank slope protection under the poor geological condition needs to be carried out ecological restoration in time, so that the geological condition is prevented from being worse;
the invention discloses a river bank slope ecological protection structure and a dredging method under bad geological conditions, which has the main beneficial effects that (1) a cofferdam is reasonably utilized to divide dredging river segments, and support piles and backfill stones are utilized to carry out safety protection on the bank slope; adopting retarded drainage to provide dry dredging conditions, avoiding damages such as instability, collapse, subsidence and the like of bank slopes at two sides of a river channel in the dredging construction process; (2) After dredging, an ecological plant planting bed is arranged on the surface layer of the backfilled stone, ecological plants are planted, the local water ecology of the river is improved, the self-cleaning capability of the river is improved, the river sewage treatment period is prolonged, the later-stage sewage treatment cost is reduced, and the ecological river has landscape benefits.
However, the above technical solution has the following drawbacks: the upstream cofferdam in actual use needs to be completely dismantled, and the upstream cofferdam cannot be reasonably reused, so that the cost is obviously increased.
Disclosure of Invention
Aiming at the problem that the upstream cofferdam in the prior art cannot be reasonably reused, the invention provides the following technical scheme:
an ecological protection structure of a river bank slope, comprising: two disconnect-type pier bodies, two the disconnect-type pier bodies are located the river course upper reaches and low reaches respectively for with the river course shutoff, two be provided with two rows of support stake between the disconnect-type pier bodies, two rows support stake is separated at the river course both sides, two rows support stake one side that is on the back of the body all is provided with vegetation coverage area, vegetation coverage area inside is provided with a plurality of partition walls the same with disconnect-type pier body orientation, and the partition wall buries deeply in the river course bank slope, adjacent two all built revetment barricade between the partition wall, the revetment barricade is the gradient setting, and its height is the direction grow to keeping away from the support stake gradually.
As the preference of above-mentioned technical scheme, the disconnect-type pier body includes the foundation pier that the cast-in-place formed and is located the prefab at foundation pier top, and the prefab is cast by the mill and is formed, transports to scene and foundation pier combination, the prefab surface is equipped with the jack that link up from top to bottom, foundation pier top integrated into one piece has the spacing reinforcing bar with jack assorted, prefab surface integrated into one piece has the hoist and mount reinforcing bar of horizontal setting, and hoist and mount reinforcing bar both ends all expose in the prefab outside.
As the preference of the technical scheme, the surface of the downstream hoisting steel bar is provided with a diversion frame, the surface of the diversion frame is provided with a sludge pump, both ends of the diversion frame are respectively provided with a total groove corresponding to vegetation coverage areas on both sides of the river channel, and the surface of the total groove is communicated with a diversion groove corresponding to each revetment retaining wall.
As the preference of above-mentioned technical scheme, total groove and water conservancy diversion frame contained angle in the horizontal plane be the right angle, and the height of total groove diminishes to the direction of keeping away from the water conservancy diversion frame gradually, and total tank bottom portion is provided with a plurality of length and shortens the bracing piece gradually to adapt to total tank bottom surface's height, thereby make the bracing piece support in revetment barricade surface.
As the optimization of the technical scheme, the connecting pipe is arranged at the joint of the shunt groove and the main groove, the connecting pipe is of a corrugated pipe structure, the outer surface of the connecting pipe is sleeved with the supporting ring, and a plurality of inclined supporting rods which are obliquely arranged are arranged at the bottom of the supporting ring.
As the preference of above-mentioned technical scheme, water drain pipe is had in water conservancy diversion frame side intercommunication, and the water drain pipe is close to the top of water conservancy diversion frame, and the one end that water drain pipe kept away from the water conservancy diversion frame and water conservancy diversion frame are located nearest prefab both sides respectively.
As the preference of above-mentioned technical scheme, be connected with the rubber hose between drain pipe and the water conservancy diversion frame, the water conservancy diversion frame surface is provided with type frame, type frame cover in the drain pipe outside, and the both ends of type frame are crooked towards drain pipe top and bottom to peg graft to the drain pipe surface, so that type frame can rotate in the horizontal direction.
The invention also provides a dredging method using the river bank slope ecological protection structure, which comprises the following steps,
step one: constructing two base piers at the upstream and downstream of the river channel by utilizing a concrete mortar process, and placing the prefabricated members at the tops of the base piers after the base piers are solidified, so that the through holes on the surfaces of the prefabricated members correspond to the limit reinforcing bars at the tops of the base piers, thereby completing the assembly of the split pier body;
step two: then, the wooden piles are pressed into soil on two sides of a river channel by using an excavator to form two rows of supporting piles;
step three: then, a plurality of partition walls are built on the bricks of two banks, a revetment retaining wall is built between two adjacent partition walls on the same bank, the revetment retaining wall shows gradually reduced height change to a river channel, and the revetment retaining wall and the partition walls are solidified together by adopting concrete;
step four: pumping water in the cut river channel into the upstream through a water pump, preparing additional prefabricated members, pushing river bottom sludge to a separated pier body at the downstream through engineering machinery such as a digging machine, a bulldozer and the like, and blocking the sludge by the prepared prefabricated members to prevent the sludge from diffusing to the upstream;
step five: placing a diversion frame at the hoisting reinforcing steel bar, placing a total groove at the revetment retaining wall, wherein each diversion groove on the total groove corresponds to the revetment retaining wall between two adjacent partition walls respectively, pumping sludge through a sludge pump, and entering each revetment retaining wall from each diversion groove after passing through the diversion frame and the total groove to serve as nutrient soil of a vegetation coverage area;
step six: finally, planting a grass and shrubs at each revetment retaining wall, and planting the grass and the shrubs in a mixed mode, so that a vegetation coverage area is formed;
step seven: and hoisting the prefabricated member at the upstream to the downstream foundation pier of the ecological protection zone at the next section, and repeating the steps two to five to realize continuous protection dredging.
The beneficial effects of the invention are as follows:
(1) The prefabricated members are recycled by using the split type pier body assembly mode, so that the cost is obviously saved, the subsequent dismantling efficiency is improved, a plurality of prefabricated members can be prepared, and when dredging is performed, sludge can be concentrated at the downstream split type pier body and blocked by the prefabricated members;
(2) The sludge on the riverbed is removed and reused by utilizing the arrangement of the revetment retaining walls and the partition walls and used for planting vegetation, a vegetation coverage area is formed at a bank slope, soil is prevented from flowing into a dredging riverway, concentrated sludge is pumped into a flow guiding frame through a sludge pump, the flow guiding frame guides the sludge to each revetment retaining wall through a main groove and a diversion groove, the sludge is used as a basic fertilizer for planting plants, and the reutilization of the sludge is realized;
(3) Through type frame and rubber hose's setting, not only can come out the inside unnecessary water conservancy diversion of water conservancy diversion frame, construction equipment needs to pass through moreover, and rubber hose takes place bending deformation to can realize construction equipment's smooth passing through, more convenient during the in-service use.
Drawings
FIG. 1 is a schematic perspective view of a river bank slope ecological protection structure in the invention;
FIG. 2 is a schematic view of vegetation cover areas, partition walls, revetment retaining walls, main tanks, and diversion tanks according to the present invention;
FIG. 3 is an exploded view of the split pier body of the present invention;
FIG. 4 is a schematic view showing a partial structure of a flow guiding frame in the present invention;
fig. 5 shows a flow chart of the dredging method in the present invention.
In the figure: 1. separating pier body; 101. a foundation pier; 102. a preform; 103. limiting steel bars; 104. hoisting the steel bars; 2. supporting piles; 3. a vegetation coverage; 4. partition walls; 5. revetment retaining wall; 6. a flow guiding frame; 7. a sludge pump; 8. a total groove; 9. a shunt channel; 10. a support rod; 11. a connecting pipe; 12. a support ring; 13. a diagonal brace; 14. a water drain pipe; 15. a rubber hose; 16. type frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
Examples
Fig. 1 to 4 are schematic structural views showing a river bank slope ecological protection structure as one embodiment of the present invention. In fig. 1, it includes: the two separated pier bodies 1 are respectively positioned at the upstream and the downstream of the river channel and used for intercepting the river channel, two rows of support piles 2 are arranged between the two separated pier bodies 1, the two rows of support piles 2 are respectively arranged on two sides of the river channel, vegetation coverage areas 3 are respectively arranged on one sides of the two rows of support piles 2, which are opposite to each other, a plurality of partition walls 4 with the same orientation as the separated pier bodies 1 are arranged in the vegetation coverage areas 3, the partition walls 4 are deeply buried in the bank slope of the river channel, and revetment retaining walls 5 are respectively built between the two adjacent partition walls 4; in fig. 2, the revetment retaining walls 5 are arranged in a gradient manner, and the heights of the revetment retaining walls 5 gradually increase in a direction away from the support piles 2, i.e. the heights of the revetment retaining walls 5 gradually rise in a stair shape.
The two separated pier bodies 1 are arranged at the upstream and downstream of the river channel, the river channel is cut off, water at the cut-off position is extracted, the river bed is leaked, ecological protection is carried out in sections, when the separated pier body 1 is in actual use, the upper part can be reused, the sludge of the river bed is removed and reused by utilizing the arrangement of the revetment retaining wall 5 and the partition wall 4 for planting vegetation, a vegetation coverage area 3 is formed at a bank slope, soil is prevented from losing into the river channel after dredging, the supporting piles 2 are vertically inserted into the river channel, the foundation is firmer, the river channel is reformed when the separated pier body 1 is arranged at the downstream of the river channel, in order to adapt to the placing of disconnect-type pier body to align with the disconnect-type pier body 1 of upstream, the disconnect-type pier body 1 just in time is in same direction of advance in the place of placing after placing in succession like this, after dredging the protection to the river course, and revetment barricade 5 and partition wall 4 also correspond the disconnect-type pier body 1 after placing and construct, after dredging the protection at last, more straight with the river course transformation, two banks are more pleasing to the eye, and to the river course that the degree of buckling is great, can adopt the segmentation construction, divide into a plurality of regions with the river course, the river course of every region is close to straight river course, adopt above-mentioned scheme to construct.
Fig. 1 and fig. 3 show a schematic structural diagram of a river bank slope ecological protection structure as a specific embodiment of the present invention, in fig. 3, the separated pier body 1 includes a foundation pier 101 formed by casting in situ and a prefabricated member 102 located at the top of the foundation pier 101, the prefabricated member 102 is formed by casting in a factory and transported to the site to be combined with the foundation pier 101, the surface of the prefabricated member 102 is provided with a jack penetrating up and down, the top of the foundation pier 101 is integrally formed with a spacing steel bar 103 matched with the jack, the surface of the prefabricated member 102 is integrally formed with a hoisting steel bar 104 arranged transversely, and two ends of the hoisting steel bar 104 are exposed outside the prefabricated member 102.
When the river channel dredging device is in practical use, the foundation pier 101 is poured firstly, the limit reinforcing steel bars 103 are reserved at the top of the foundation pier 101, the prefabricated members 102 after pouring and solidification in a factory are only required to be transported to a river channel site, the prefabricated members 102 are placed at the top of the foundation pier 101, through holes on the surfaces of the prefabricated members 102 correspond to the limit reinforcing steel bars 103 at the top of the foundation pier 101, the assembly of the separated pier body 1 is completed, after river channel dredging is completed, the upstream prefabricated members 102 can be hoisted to the downstream foundation pier 101 of the next-section ecological protective area, the recycling of the prefabricated members 102 is realized, the cost is obviously saved, the subsequent dismantling efficiency is improved, a plurality of prefabricated members 102 can be prepared, and when dredging is carried out, sludge can be concentrated at the downstream separated pier body 1 through the prefabricated members 102 to block the sludge.
Fig. 1 to 2 show schematic structural views of a river bank slope ecological protection structure as a specific embodiment of the present invention, in fig. 1, a diversion frame 6 is provided on the surface of a downstream hoisting steel bar 104, a sludge pump 7 is provided on the surface of the diversion frame 6, total grooves 8 corresponding to vegetation coverage areas 3 on two sides of the river are respectively provided at two ends of the diversion frame 6, the surface of the total groove 8 is communicated with a diversion groove 9, and the diversion groove 9 corresponds to each revetment retaining wall 5; the included angle of the total groove 8 and the diversion frame 6 in the horizontal plane is a right angle, and the height of the total groove 8 gradually becomes smaller towards the direction far away from the diversion frame 6, in fig. 2, a plurality of support rods 10 with gradually shortened lengths are arranged at the bottom of the total groove 8 so as to adapt to the height of the bottom surface of the total groove 8, and therefore the support rods 10 are supported on the surface of the revetment retaining wall 5.
The sludge pump 7 is used for pumping concentrated sludge into the guide frame 6, the guide frame 6 guides the sludge to the position of each revetment retaining wall 5 through the total groove 8 and the diversion grooves 9, so that the sludge is used as a base fertilizer for planting plants, recycling of the sludge is realized, water at the downstream can be pumped in the process of guiding the sludge in actual use, sludge adhesion is avoided, and the sludge after mixing water is pushed to the position of the diversion grooves 9 through manual work.
Fig. 1 to 2 show schematic structural views of a river bank slope ecological protection structure as a specific embodiment of the present invention, a connecting pipe 11 is arranged at a connection position of a shunt groove 9 and a main groove 8, the connecting pipe 11 is of a bellows structure, can be contracted and shortened, can be bent, a supporting ring 12 is sleeved on the outer surface of the connecting pipe 11, and a plurality of inclined supporting rods 13 which are obliquely arranged are arranged at the bottom of the supporting ring 12.
When the silt is actually guided, the connecting pipe 11 of the bellows-shaped structure is convenient to deform, so that the position of the end part of the shunt groove 9 can be adjusted, the shunt groove 9 faces different positions, the silt is guided to different positions, the silt is prevented from being accumulated in one position, the inclined stay bar 13 at the bottom of the connecting pipe 11 can play a supporting role on the connecting pipe 11, and the silt is prevented from adhering to the bottom of the connecting pipe.
Fig. 1 and fig. 3 show a schematic structural diagram of a river bank slope ecological protection structure as a specific embodiment of the present invention, where the side surface of a diversion frame 6 is communicated with a water drain pipe 14, the water drain pipe 14 is close to the top of the diversion frame 6, and one end of the water drain pipe 14, which is far from the diversion frame 6, and the diversion frame 6 are respectively located at two sides of the nearest prefabricated member 102; a rubber hose 15 is connected between the water drain pipe 14 and the flow guiding frame 6, a type frame 16 is arranged on the surface of the flow guiding frame 6, the type frame 16 is sleeved outside the water drain pipe 14, two ends of the type frame 16 are bent towards the top and the bottom of the water drain pipe 14 and are inserted into the surface of the water drain pipe 14, so that the type frame 16 can rotate in the horizontal direction.
The drain pipe 14 can flow out the redundant water in the flow guiding frame 6 and flow into a downstream river channel, and because the drain pipe 14 is positioned at the top of the prefabricated member 102, when construction equipment such as a cart needs to pass through, the water guiding frame can directly pass through, and when the construction equipment passes through, the drain pipe 14 can be transversely pushed to deflect, so that the rubber hose 15 is bent and deformed, and the type frame 16 plays a role in supporting and limiting the drain pipe 14, thereby realizing smooth passing of the construction equipment, and being more convenient in actual use.
As shown in fig. 5, the present invention also provides a method for dredging river course bank slope ecological protection structure, which comprises the following steps,
step one: constructing two base piers 101 at the upstream and downstream of a river channel by utilizing a concrete mortar process, placing a prefabricated member 102 on the top of the base pier 101 after the base piers 101 are solidified, and enabling through holes on the surface of the prefabricated member 102 to correspond to limit steel bars 103 on the top of the base piers 101 so as to complete the assembly of the split type pier body 1;
step two: then, the wooden piles are pressed into the soil on two sides of the river course by using an excavator to form two rows of supporting piles 2;
step three: then, a plurality of partition walls 4 are built on the two banks, a revetment retaining wall 5 is built between two adjacent partition walls 4 on the same bank, the revetment retaining wall 5 presents gradually reduced height change to a river channel, and the revetment retaining wall 5 and the partition walls 4 are solidified together by adopting concrete;
step four: pumping water in a cut river channel into an upstream through a water pump, preparing an additional prefabricated member 102, pushing river bottom sludge to a separated pier body 1 at a downstream position through engineering machinery such as a digging machine, a bulldozer and the like, and blocking the sludge by the prepared prefabricated member 102 to prevent the sludge from diffusing to the upstream position;
step five: placing a diversion frame 6 at a lifting steel bar 104, placing a total groove 8 at a revetment retaining wall 5, wherein each diversion groove 9 on the total groove 8 corresponds to the revetment retaining wall 5 between two adjacent partition walls 4 respectively, pumping sludge through a sludge pump 7, and entering each revetment retaining wall 5 from each diversion groove 9 after passing through the diversion frame 6 and the total groove 8 to serve as nutrient soil of a vegetation coverage area 3;
step six: finally, planting a grass and shrubs at each revetment retaining wall 5, and planting the grass and the shrubs in a mixed mode, so that a vegetation coverage area 3 is formed;
step seven: and hoisting the prefabricated member 102 at the upstream to the downstream foundation pier 101 of the ecological protection zone at the next section, and repeating the steps two to five to realize continuous protection dredging.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (2)
1. The utility model provides a river course bank slope ecological protection structure which characterized in that includes: the river channel revetment retaining wall comprises two separated pier bodies (1), wherein the two separated pier bodies (1) are respectively positioned at the upstream and the downstream of the river channel and used for intercepting the river channel, two rows of support piles (2) are arranged between the separated pier bodies (1), the two rows of support piles (2) are respectively arranged on two sides of the river channel, vegetation coverage areas (3) are respectively arranged on one sides of the two rows of support piles (2) opposite to each other, a plurality of partition walls (4) facing the separated pier bodies (1) are arranged inside the vegetation coverage areas (3), the partition walls (4) are deeply buried in the river channel slope, revetment retaining walls (5) are respectively built between every two adjacent partition walls (4), the revetment retaining walls (5) are arranged in a gradient mode, and the heights of the revetment retaining walls gradually become larger towards the direction away from the support piles (2);
the separated pier body (1) comprises a foundation pier (101) formed by casting on site and a prefabricated member (102) positioned at the top of the foundation pier (101), the prefabricated member (102) is formed by casting in a factory and transported to the site to be combined with the foundation pier (101), the surface of the prefabricated member (102) is provided with an jack which is penetrated up and down, the top of the foundation pier (101) is integrally formed with a spacing reinforcing steel bar (103) matched with the jack, the surface of the prefabricated member (102) is integrally formed with a hoisting reinforcing steel bar (104) which is transversely arranged, and two ends of the hoisting reinforcing steel bar (104) are exposed outside the prefabricated member (102);
the surface of the downstream hoisting steel bar (104) is provided with a diversion frame (6), the surface of the diversion frame (6) is provided with a sludge pump (7), both ends of the diversion frame (6) are respectively provided with a total groove (8) corresponding to the vegetation coverage areas (3) on both sides of the river channel, the surface of the total groove (8) is communicated with a diversion groove (9), and the diversion groove (9) corresponds to each revetment retaining wall (5);
the included angle between the total groove (8) and the guide frame (6) in the horizontal plane is a right angle, the height of the total groove (8) gradually decreases towards the direction far away from the guide frame (6), and a plurality of support rods (10) with gradually shortened lengths are arranged at the bottom of the total groove (8) so as to adapt to the height of the bottom surface of the total groove (8), so that the support rods (10) are supported on the surface of the revetment retaining wall (5);
a connecting pipe (11) is arranged at the joint of the shunt groove (9) and the main groove (8), the connecting pipe (11) is of a corrugated structure, a supporting ring (12) is sleeved on the outer surface of the connecting pipe (11), and a plurality of inclined supporting rods (13) which are obliquely arranged are arranged at the bottom of the supporting ring (12);
the side surface of the flow guiding frame (6) is communicated with a water discharging pipe (14), the water discharging pipe (14) is close to the top of the flow guiding frame (6), and one end of the water discharging pipe (14) far away from the flow guiding frame (6) and the flow guiding frame (6) are respectively positioned at two sides of the nearest prefabricated member (102);
a rubber hose (15) is connected between the water drain pipe (14) and the flow guide frame (6), a type frame (16) is arranged on the surface of the flow guide frame (6), the type frame (16) is sleeved outside the water drain pipe (14), two ends of the type frame (16) are bent towards the top and the bottom of the water drain pipe (14) and are inserted into the surface of the water drain pipe (14), so that the type frame (16) can rotate in the horizontal direction.
2. A method for dredging river bank slope ecological protection structure according to claim 1, which is characterized in that the method comprises the following steps,
step one: constructing two base piers (101) at the upstream and downstream of a river channel by utilizing a concrete mortar process, placing a prefabricated member (102) at the top of the base piers (101) after the base piers (101) are solidified, and enabling through holes on the surface of the prefabricated member (102) to correspond to limit steel bars (103) at the top of the base piers (101) so as to complete the assembly of the split pier body (1);
step two: then, the wooden piles are pressed into soil on two sides of a river channel by using an excavator to form two rows of supporting piles (2);
step three: then a plurality of partition walls (4) are built on the bricks on two banks, a revetment retaining wall (5) is built between two adjacent partition walls (4) on the same bank, the revetment retaining wall (5) presents gradually reduced height change to a river channel, and the revetment retaining wall (5) and the partition walls (4) are solidified together by adopting concrete;
step four: pumping water in a truncated river channel into an upstream through a water pump, preparing additional prefabricated members (102), pushing river bottom sludge to a separated pier body (1) at a downstream position through a digging machine and a bulldozer engineering machine, and blocking the sludge by the prepared prefabricated members (102) to prevent the sludge from diffusing to the upstream position;
step five: a diversion frame (6) is placed at a lifting steel bar (104), a total groove (8) is placed at a revetment retaining wall (5), each diversion groove (9) on the total groove (8) corresponds to the revetment retaining wall (5) between two adjacent partition walls (4) respectively, sludge is extracted through a sludge pump (7), and after passing through the diversion frame (6) and the total groove (8), the sludge enters each revetment retaining wall (5) from each diversion groove (9) to serve as nutrient soil of a vegetation coverage area (3);
step six: finally, planting a grass and shrubs at each revetment retaining wall (5), and planting the grass and the shrubs in a mixed mode, so that a vegetation coverage area (3) is formed;
step seven: hoisting the prefabricated member (102) at the upstream to the downstream pier (101) of the next ecological protection zone, and repeating the second to fifth steps to realize continuous protection dredging.
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