Urban river channelization ecological construction method

Abstract

The application discloses a kind of urban river channeling ecological construction methods, it is related to river ecological restoration technical field, including the following steps: the hardening cement part of channeling river bottom is crushed to form channeling river crushing layer;Grid cement grid is laid on channeling river crushing layer;Submerged plant is planted in grid cement grid, according to water environment, biological is added, to create pool bottom biological diversity ecological group, along the direction of river channel, the construction of urban river channeling ecology is built.The application not only reduces the occupation of river to urban land under the premise of retaining ecological system, but also saves urban livable environment, reduces river restoration cost;Through the interaction of river bottom and groundwater, the circulation system of river water and groundwater is built, the near-natural restoration of urban channeling river is better realized, the inherent microbial population of river is protected, and the self-purification capacity of river is realized.

Description

Technical Field

[0001] This invention belongs to the field of river ecological restoration technology, specifically relating to a method for constructing ecological canalization of urban rivers. Background Technology

[0002] To improve the safety and stability of urban waterways, the current practice of canalization using hard concrete has several drawbacks: it causes the waterways to lose their natural ecosystems, leading to black and odorous algae blooms; hard canalization obstructs the exchange and communication between groundwater and the riverside environment and the urban waterway, severely affecting the urban water cycle; excessive canalization hinders the integration of the city and the waterway, losing the comfort that the waterway originally provided; and given the scarcity of land in urban areas, it is difficult to achieve large-scale slope protection and ecological greening during restoration. Creating an underwater ecosystem and constructing an underwater forest is the future trend of urban waterway ecological restoration. Therefore, we have designed and proposed a method for ecological construction of urban waterway canalization. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies that use hard cement channelization in river channels, which damages the natural ecology, and to propose a method for ecological construction of urban river channelization.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A method for constructing ecological canalization of urban rivers is designed, characterized by the following steps:

[0006] S1. The river channel is isolated by a semi-enclosed method, and the river water in the isolated area is pumped out;

[0007] S2. Crushing the hardened cement portion at the bottom of the channelized riverbed to form a crushed layer of the channelized riverbed;

[0008] S3. Lay a grid cement grating on the crushed layer of the channelized river channel and fix it in place;

[0009] S4. Connection between the fixed grid cement bar and the hardened cement pool wall

[0010] S5. Use bottom mud mixed with microbial agents as filler inside the grid cement grid, and plant submerged plants. Add organisms according to the water environment to create a biodiversity ecological community at the bottom of the pool.

[0011] S6. Construct boardwalks along the river channel to complete the construction of an ecological canal for the city's waterways.

[0012] Furthermore, in S2, before the hardened cement at the bottom of the channel is crushed, the hardened cement pool walls on both sides of the channel are reinforced and fixed with anchor bolts.

[0013] Furthermore, in S2, after the hardened cement at the bottom of the channelized riverbed is crushed, continuous ditches are provided on the paving surface on both sides of the riverbed along the direction of the riverbed. The ditches are provided with walls on both sides and a cover plate with drainage holes on the top. Multiple drainage pipes are provided on the hardened cement pool walls on both sides of the riverbed along the direction of the riverbed, and the drainage pipes are connected to the bottom of the ditches.

[0014] Furthermore, an oxygenation pipe is laid in the ditch, and the branch pipes of the oxygenation pipe extend through the drainage pipe into the river channel.

[0015] Furthermore, support plates are fixed in an array along the river direction on the hardened cement pool walls on both sides of the river, the outlet of the drainage pipe is located on the support plate, and LED light strips are provided on the support plate.

[0016] Furthermore, in S2, after the channelized channel crushing layer is formed, a sinking trough is drilled on the channelized channel crushing layer using a rammer, and an exchange zone is formed between the sidewall of the sinking trough and the channel bed.

[0017] Furthermore, in S3, the mesh cement grid is connected and fixed using wear-resistant, high-strength locking blocks during installation.

[0018] Furthermore, in S4, the grid cement grid and the hardened cement pool wall are connected by reinforced concrete casting, forming a reinforced concrete column at the connection between the grid cement grid and the hardened cement pool wall.

[0019] Furthermore, in S6, the walkway includes an arched steel frame, with multiple platforms on both sides of the steel frame along the river direction, ventilation windows for the river on both sides of the platforms, and transparent planks laid on the top of the steel frame along the river direction.

[0020] Furthermore, a long corridor is constructed on the boardwalk, with hanging planting baskets on both sides of the corridor, blending in with the water of the river.

[0021] The proposed method for ecological construction of urban river channel canalization has the following advantages:

[0022] (1) This invention repairs the hardened pool bottom and bottom mud by crushing and crushing, constructs an underwater forest, and at the same time reuses the raw materials of the pool bottom, thus realizing resource utilization.

[0023] (2) The present invention fixes the channelized riverbed crushed layer, bottom mud and plant roots by wrapping them with a grid cement grid at the bottom of the river pool, which can prevent rainwater erosion.

[0024] (3) When constructing the underwater ecosystem of urban canalized waterways, this invention not only preserves the original ecosystem of the waterway, but also saves the urban living environment and reduces the cost of waterway restoration.

[0025] (4) This invention establishes a circulation system for river water and groundwater by constructing an ecosystem at the bottom of the river, which better realizes the near-natural restoration of urban channelized rivers.

[0026] (5) This invention can achieve the water accessibility of urban waterways by laying the waterway in a stepped manner on both sides of the waterway and constructing an ecological corridor. On the one hand, it saves the area occupied by urban waterways, and on the other hand, it increases the frequency of use of urban waterways.

[0027] (6) The present invention can protect the inherent microbial population of the river by realizing the interaction between the bottom of the river and the groundwater, thereby realizing the self-purification ability of the river. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0029] Figure 1 This is a flowchart illustrating the present invention;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the river channel in Embodiment 1 of the present invention;

[0031] Figure 3 This is a schematic diagram of the river channel cross-section in Embodiment 1 of the present invention;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the river channel in Embodiments 2-4 of the present invention;

[0033] Figure 5 This is a schematic diagram of the river channel cross-section in Embodiments 2-4 of the present invention;

[0034] Figure 6 This is a schematic diagram of the river channel cross-section in Embodiment 5 of the present invention;

[0035] Figure 7 yes Figure 6 A magnified structural diagram of point A;

[0036] Figure 8 This is a schematic diagram of the river channel cross-section in Embodiment 6 of the present invention;

[0037] Figure 9 This is a schematic diagram of the structure of the stackway in this invention;

[0038] The markings in the diagram are as follows: 1. River channel; 2. Channelized river channel crushing layer; 3. Hardened cement pool wall; 31. Steps; 4. Grid cement grating; 5. Reinforced cement column; 6. Anchor bolt; 61. Support plate; 7. Pavement; 71. Ditch; 72. Ditch wall; 73. Cover plate; 74. Drainage pipe; 8. Boardwalk; 81. Steel frame; 82. Ladder; 83. River channel ventilation window; 84. Pallet; 85. Corridor; 9. LED light strip; 10. Oxygenation pipe. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped," "laid out," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The structural features of the present invention will now be described in detail with reference to the accompanying drawings.

[0043] Example 1

[0044] See Figures 1-3 and Figure 9 A method for ecological construction of urban river channelization includes the following steps:

[0045] ① The river channel 1 is isolated by a semi-enclosed method, and the river water in the isolated area is pumped out.

[0046] Among them, the channelization on both sides of the river channel 1 adopts a stepped paving to form steps 31. While saving space, it blends with the water body of the river channel 1. Hanging planting baskets are set on the steps 7 to plant seasonal flowers and grasses and create an ecological landscape. The vertical channelization on both sides above the water surface is transformed into a stepped paving and connects the water surface to create an ecological corridor, which enhances the intimacy between people and the river. The construction of the ecological corridor can realize the water accessibility of the urban river and increase the frequency of use of the urban river.

[0047] ② The hardened cement portion at the bottom of the channelized riverbed is crushed to form a crushed layer 2 of the channelized riverbed.

[0048] In this process, the hardened cement pool walls 3 on both sides of the channel 2 are reinforced before the hardened cement at the bottom of the channel is crushed and fixed with anchor bolts 6. The crushed layer 2 of the channelized river is left on the riverbed and is arranged in an intricate manner to improve visibility and provide a habitat for biological populations. This realizes the secondary use of the raw materials at the bottom of the pool and achieves resource utilization. The cracks in the crushed layer 2 of the channelized river enable the circulation of river water and groundwater, which better realizes the near-natural restoration of urban channelized rivers.

[0049] ③ A grid cement grid 4 is laid on the channelized riverbed crushing layer 2 obtained in step ② for fixation. The laying of the grid cement grid 4 can fix the channelized riverbed crushing layer 2, bottom mud and root system by wrapping, which can prevent rainwater erosion.

[0050] Among them, the mesh cement grid 4 is connected and fixed by wear-resistant high-strength locking blocks during the laying process, and each set of mesh cement grid 4 is 1*2m.

[0051] ④ The two sides of the grid cement grid 4 are connected to the hardened cement pool walls 3 on both sides of the river channel by reinforced cement pouring to form reinforced cement columns 5.

[0052] ⑤ The interior of the grid cement grid 4 uses bottom mud mixed with microbial agents as filler, and submerged plants are planted inside. High-efficiency compound microbial agents are added for remediation; these agents are cultivated using selected effective aquatic bacteria and include the inherent Bacillus subtilis. After construction, submerged plants are planted within the grid cement grid 4. Planting devices can be used to significantly improve replanting efficiency and protect the biological community structure at the bottom of the river. The planting density of submerged plants is adjusted according to the size of the grid cement grid 4 and the type of submerged plants. Plants with strong root systems and adapted to flowing water are selected, such as Potamogeton crispus, Myriophyllum spicatum, and Potamogeton pectinatus. After planting submerged plants in the grid cement grid 4 at the bottom of the pond, fish, shellfish, and other organisms are added according to the aquatic environment to create a biodiversity ecosystem at the bottom of the pond.

[0053] ⑥ Construct a boardwalk 8 along the direction of river 1 to complete the construction of the urban river channel ecology. The boardwalk 8 includes an arched steel frame 81. To increase the height of the boardwalk 8 and allow airflow to flow normally into river 1, multiple platforms 82 are provided on both sides of the steel frame 81 along the river direction. River ventilation windows 83 are provided on both sides of the platforms 82. The river ventilation windows 83 are designed to allow airflow from both sides of the boardwalk 8 into river 1, and to allow tall aquatic plants to extend through the river ventilation windows 83 to both sides of the boardwalk 8, increasing the integration between river 1 and boardwalk 8 and improving the aesthetics. A transparent board 84 is laid on the top of the steel frame 81 along the river direction. The board 84 can be made of high-strength tempered glass. The transparent board 84 can prevent the boardwalk 8 from affecting the light in river 1.

[0054] The urban river channelization ecological construction method of the present invention, on the one hand, ensures that the area occupied by the river in the city is reduced while preserving the ecosystem, and saves the urban living environment and reduces the cost of river restoration. On the other hand, by realizing the interaction between the river bottom and groundwater, a circulation system of river water and groundwater is built, which better realizes the near-natural restoration of urban channelized rivers, protects the inherent microbial population of the river, and realizes the self-purification capacity of the river.

[0055] Example 2

[0056] Reference Figures 4-5 and Figure 9 As another preferred embodiment of the present invention, the difference from embodiment 1 is that, in step ②, after the hardened cement at the bottom of the channelized riverbed is crushed, continuous ditches 71 are provided on the pavement 7 on both sides of the riverbed 1 along the direction of the river. The ditches 71 have walls 72 on both sides and a cover plate 73 with drainage holes on the top. The hardened cement pool walls 3 on both sides of the riverbed 1 are provided with multiple drainage pipes 74 along the direction of the river. The drainage pipes 74 are connected to the bottom of the ditches 71. The setting of the ditches 71 can prevent external rainwater from eroding the hardened cement pool walls 3 during the rainy season, and play a role in protecting the hardened cement pool walls 3 after the modification. The drainage pipes 74 make the hardened cement pool walls 3 and the ditches 71 form an integral structure, which enhances the strength and durability of the hardened cement pool walls 3 after the modification.

[0057] Example 3

[0058] Reference Figures 4-5 and Figure 9 In another preferred embodiment of the present invention, the difference from Embodiment 2 is that an oxygenation pipe 8 is laid in the ditch 71, and a branch pipe of the oxygenation pipe 8 extends through the drainage pipe 74 into the river channel 1. The oxygenation pipe 8 can supply oxygen to the river channel 1, increase the oxygen content of the river water, and is beneficial to the restoration and construction of the river channel's early ecosystem.

[0059] Example 4

[0060] Reference Figures 4-5 and Figure 9 In another preferred embodiment of the present invention, the difference from Embodiment 2 is that support plates 61 are fixedly arranged in an array along the river direction on the hardened cement pool walls 3 on both sides of the river channel 1. The outlet of the drainage pipe 74 is located on the support plate 61, and an LED light strip 9 is provided on the support plate 61. The addition of the support plate 61 can improve the reinforcement of the hardened cement pool walls 3. At the same time, the water entering the drainage pipe 74 flows into the river channel 1 through the support plate 61, reducing the scouring of the hardened cement pool walls 3 and protecting them. The addition of the LED light strip 9 can improve the aesthetics of the river channel 1, further enhance the accessibility of the urban river channel, and increase the frequency of use of the urban river channel.

[0061] Example 5

[0062] Reference Figures 6-7 and Figure 9 As another preferred embodiment of the present invention, the difference from embodiment 2 is that in step ②, after the channelized riverbed pulverization layer 2 is formed, a sinking trough 21 is drilled on the channelized riverbed pulverization layer 2 by a rammer. An exchange zone 22 is formed between the sidewall of the sinking trough 21 and the riverbed. The formation of the sinking trough 21 in the channelized riverbed pulverization layer 2 increases the area of ​​exchange between river water and groundwater, further increases the interaction between the riverbed and groundwater, enhances the circulation capacity of river water and groundwater, and better realizes the near-natural restoration capacity of urban channelized riverbeds.

[0063] Example 6

[0064] Reference Figure 8 and Figure 9 As another preferred embodiment of the present invention, the difference from embodiment 1 is that a long corridor 85 is constructed on the boardwalk 8, and hanging planting baskets are installed on both sides of the long corridor 85 to blend with the water of the river 1. The long corridor 85 can further increase the frequency of use of the urban river.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for constructing an urban river channelization ecology, characterized in that, The method comprises the following steps: Step one, isolate the river channel (1) in a semi-closed manner, and pump out the river water in the isolated area of the river channel; Step two, crush the hardened cement part at the bottom of the channelized river to form a channelized river crushing layer (2); Step three, lay the grid cement grid (4) on the channelized river crushing layer (2) obtained in step two and fix it; Step four, fix the connection between the grid cement grid (4) and the hardened cement pool wall (3); Step five, use the bottom mud mixed with microbial agents as the filler inside the grid cement grid (4), and plant submerged plants, add biological according to the water environment, and create a pool bottom biological diversity ecological group; Step six, build a trestle (8) along the river channel (1) to complete the construction of the urban river channel ecological channel. In step two, after forming the channelized river crushing layer (2), a sinking groove (21) is formed on the channelized river crushing layer (2) by a rammer, and an exchange area (22) is formed between the side wall of the sinking groove (21) and the river bed.

2. The method according to claim 1, characterized in that, In step two, before crushing the hardened cement at the bottom of the channelized river, the hardened cement pool wall (3) on both sides of the river channel (1) is reinforced, and an anchor rod (6) is used for fixation.

3. The method according to claim 1, characterized in that, In step two, after crushing the hardened cement at the bottom of the channelized river, a continuous ditch (71) is provided on the pavement (7) on both sides of the river channel in the river direction, and a ditch wall (72) is provided on both sides of the ditch (71), and a cover plate (73) with a drainage hole is provided on the top, a plurality of drainage pipes (74) are provided on the hardened cement pool wall (3) on both sides of the river channel in the river direction, and the drainage pipes (74) are connected with the bottom of the ditch (71).

4. The method according to claim 3, characterized in that, The ditch (71) is provided with an oxygenation pipe (10), and the branch pipe of the oxygenation pipe (10) extends to the river channel (1) through the drainage pipe (74).

5. The method according to claim 3, characterized in that, The hardened cement pool wall (3) on both sides of the river channel (1) is arrayed and fixed with a support plate (61) in the river direction, the outlet of the drainage pipe (74) is located on the support plate (61), and the support plate (61) is provided with an LED light belt (9).

6. The method according to claim 1, wherein, In step three, when laying the grid cement grid (4), wear-resistant high-strength lock blocks are used for connection and fixation.

7. The method according to claim 1, wherein, In step four, the grid cement grid (4) and the hardened cement pool wall (3) are connected by pouring reinforced concrete, and a reinforced concrete column (5) is formed at the connection between the grid cement grid (4) and the hardened cement pool wall (3).

8. The method according to claim 1, wherein, In step six, the trestle (8) comprises an arched steel skeleton (81), the gradient of the steel skeleton (81) on both sides is provided with a plurality of steps (82) in the river direction, the steps (82) on both sides are provided with river air vents (83), and the top of the steel skeleton (81) is provided with transparent structure trestle boards (84) in the river direction.

9. The method according to claim 8, wherein the method further comprises the step of: A corridor (85) is built on the trestle (8), and hanging planting baskets are hung on both sides of the corridor (85) and integrated with the water body of the river channel (1). ​

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