A biological retention bed for river course management

Abstract

The utility model provides a kind of biological retention bed for river regulation, comprising: riverbed and dredging device, the riverbed is divided into four layers from top to bottom, is water storage layer, loam layer, coarse sand layer, gravel layer respectively;Silt interception layer is arranged in the riverbed close to the loam layer, the height of one side of silt interception layer is parallel with loam layer, and the other side is higher than loam layer.Affirmative effect, by setting special silt interception layer, can effectively intercept and accumulate silt in river channel, prevent it from further penetrating into the lower layer of retention bed, ensure that the internal structure of retention bed is not blocked by silt, by silt interception layer to intercept silt accumulation, cooperate with dredging device, accumulated silt can be conveniently cleaned regularly, dredging device can complete silt cleaning work only with a small amount of manual assistance, greatly reduce the time and labor input of manual cleaning, reduce cleaning cost, and can ensure that retention bed still maintains good effect in long-term use.

Description

Technical Field

[0001] This utility model relates to the field of river management technology, and in particular to a bioretention bed for river management. Background Technology

[0002] Bioretention beds for river management are a type of green infrastructure that utilizes natural ecology to treat river water quality. By simulating natural wetland systems, they effectively purify water, reduce pollutants, improve water quality, and provide ecological restoration for rivers through the synergistic effects of plants, soil, and microorganisms.

[0003] Most existing bioretention beds suffer from silt accumulation problems. Current designs generally lack a dedicated mechanism to intercept and remove silt from river channels. Over time, a large amount of silt accumulates inside the retention bed, which not only affects the permeability of the water flow and reduces the filtration effect, but may also lead to a decrease in water purification efficiency. In addition, existing retention beds usually do not have devices or structures for easy cleaning, and cleaning work often needs to be done manually, which is not only time-consuming and labor-intensive, but also increases cleaning costs. Utility Model Content

[0004] The present invention aims to provide a plug and wire tester to overcome the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] In one embodiment, a bioretention bed for river management includes: a riverbed and a dredging device, wherein the riverbed is divided into four layers from top to bottom: a water storage layer, a loam layer, a coarse sand layer, and a gravel layer.

[0007] A silt-blocking layer is set in the riverbed near the loam layer. One side of the silt-blocking layer is parallel to the loam layer, while the other side is higher than the loam layer.

[0008] In one embodiment, drainage channels are provided on both sides of the riverbed, and one side of each drainage channel has a high slope. The drainage channels are filled with a layer of pebbles, and several permeable bricks are fixedly installed on the top of each pebble layer.

[0009] In one embodiment, multiple rainwater discharge outlets are provided on the lower side of the inner wall of both drainage ditches.

[0010] In one embodiment, L-shaped dredging openings are provided on both sides of the riverbed near the intercepting silt layer. One of the two dredging openings is fixedly equipped with a top cover at its upper end, and the other dredging opening is equipped with a dredging device at its upper end.

[0011] In one embodiment, the dredging device includes a dredging pump, a dredging port is fixedly provided on the lower side of the dredging pump, a dredging suction port is fixedly provided at the lower end of the dredging pump, and a dredging pipe is fixedly sleeved on the suction port.

[0012] In one embodiment, the dredging pipe enters from the upper opening of the L-shaped dredging port and extends out from the lower opening to clear the silt blocked by the intercepting layer.

[0013] Beneficial effects:

[0014] By setting up a dedicated intercepting layer, silt in the river can be effectively intercepted and accumulated, preventing it from further seeping into the lower layer of the retention bed. This ensures that the internal structure of the retention bed is not blocked by silt, maintaining good permeability of the water flow. The setting of the intercepting layer effectively reduces the obstruction of water flow by silt, ensuring smooth water flow, thereby enabling the biological retention bed to continuously and efficiently purify water.

[0015] By intercepting and accumulating silt through the intercepting layer, and using a dredging device, the accumulated silt can be easily and regularly cleaned up. The dredging device requires only a small amount of manual assistance to complete the silt cleaning work, which greatly reduces the time and labor input for manual cleaning, lowers the cleaning cost, and ensures that the retention bed maintains good performance during long-term use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main axial structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the axial structure of the main cross-section of this utility model;

[0019] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 4 This is a schematic diagram of part of the mechanism of this utility model;

[0021] Figure 5 This is the utility model Figure 2 Enlarged structural diagram at point A.

[0022] The annotations in the attached figures are explained as follows:

[0023] 1. Riverbed; 101. Rainwater outfall; 102. Dredging outlet; 103. Top cover; 2. Gravel layer; 3. Coarse sand layer; 4. Loam layer; 5. Water storage layer; 6. Pebble layer; 7. Permeable bricks; 8. Dredging device; 801. Dredging pump; 802. Dredging pipe; 803. Dredging outlet; 804. Dredging suction outlet; 9. Intercepting layer. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-4 As shown, this utility model provides a bioretention bed for river management, including: a riverbed 1 and a dredging device 8. The riverbed 1 is divided into four layers from top to bottom, namely a water storage layer 5, a loam layer 4, a coarse sand layer 3, and a gravel layer 2.

[0026] A silt-blocking layer 9 is installed near the loam layer 4 within the riverbed 1. One side of the silt-blocking layer 9 is parallel to the loam layer 4, while the other side is higher than the loam layer 4. Drainage channels are installed on both sides of the riverbed 1. Both drainage channels have a high slope on one side and are filled with a pebble layer 6. Several permeable bricks 7 are fixed on the top of each pebble layer 6. Multiple rainwater discharge outlets 101 are opened on the lower side of the inner wall of each drainage channel.

[0027] Specifically, riverbed 1 is divided into two sections: a bioretention bed and a intercepting layer 9. The gravel layer 2 within the bioretention bed primarily provides a good water flow channel and forms a supporting structure. The coarse sand layer 3 above the gravel layer 2 is mainly used to further filter larger particles of impurities in the water flow. The loam layer 4, located above the coarse sand layer 3, provides a nutrient base for plant growth and microbial reproduction. Water onions are preferred for planting on the loam layer 4 due to their excellent water purification capabilities, especially their significant removal of nitrogen and phosphorus. An intercepting layer 9 is installed on one side of the retention bed in riverbed 1, flush with the loam layer 4 on one side. A barrier net is installed between the loam layer 4 and the intercepting layer 9 to prevent soil erosion caused by water flow. The other side of the intercepting layer 9 is set higher, with an arc-shaped slope designed in the middle section. This slope is adjusted according to the water flow velocity and scouring force. The setting is typically between 1 and 5 degrees. When water flows through the intercepting layer 9, the arc-shaped structure can effectively block and retain the silt in the water flow, causing it to accumulate within the arc surface of the intercepting layer 9, and significantly reducing the accumulation of silt in the retention bed, ensuring the long-term effective filtration capacity of the retention bed. In addition, the drainage channels on both sides of the riverbed 1 are filled with a pebble layer 6 for filtering rainwater. Rainwater infiltrates below through permeable bricks 7, which can effectively block fallen leaves, man-made garbage, soil and other debris. These debris usually clog the rainwater outlet 101. After infiltration, the water flows through the pebble layer 6 for secondary filtration, and finally flows along the slope of the drainage channel to the lower rainwater outlet 101. In order to prevent garbage and pebbles from entering the pipe and causing blockage, the openings on both sides of the rainwater outlet 101 are equipped with interception devices to effectively ensure the smooth flow of water into the riverbed 1.

[0028] To achieve the above-mentioned utility model objectives, such as Figure 1-5 As shown, this utility model provides a bioretention bed for river management. The riverbed 1 has L-shaped dredging ports 102 on both sides near the intercepting silt layer 9. One of the two dredging ports 102 has a top cover 103 fixedly installed at the upper end, and the other dredging port 102 has a dredging device 8 installed at the upper end. The dredging device 8 includes a dredging pump 801. A discharge port 803 is fixedly installed on the lower side of the dredging pump 801. A suction port 804 is fixedly installed at the lower end of the dredging pump 801. A dredging pipe 802 is fixedly sleeved on the suction port 804. The dredging pipe 802 enters from the upper opening of the L-shaped dredging port 102 and extends out from the lower opening to clean the intercepting silt layer 9.

[0029] Specifically, L-shaped dredging ports 102 are provided on the riverbanks near the intercepting layer 9 in the riverbed 1. These ports are used to regularly clean the silt accumulated in the intercepting layer 9. Whenever too much silt accumulates in the intercepting layer 9, the operator can open the top cover 103 on the L-shaped dredging port 102 and then insert the dredging pipe 802 along the dredging port 102. The dredging pipe 802 adopts a flexible pipe design, which makes it easy to enter narrow spaces for operation. Next, the dredging pump 801 is started, and the silt accumulated in the intercepting layer 9 is sucked out through the dredging pipe 802. The sucked-out silt is discharged through the discharge port 803, and the discharge port 803 transports the silt to the designated discharge location through an external pipeline. Through the dredging device 8, combined with the L-shaped dredging port 102 and the flexible dredging pipe 802, the silt cleaning operation is made simpler and more efficient. The dredging work no longer relies on tedious manual labor, which can greatly reduce labor input and time costs and improve work efficiency. Regularly cleaning the silt in the intercepting layer 9 helps to maintain the smooth flow of water and the filtration effect of the retention bed, thereby ensuring the stability of the water purification effect. This not only maintains the long-term efficient operation of the river management facilities, but also helps to improve the effect of water quality improvement and ecological protection.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bioretention bed for river management, comprising: The riverbed (1) and dredging device (8) are characterized in that the riverbed (1) is divided into four layers from top to bottom, namely, water storage layer (5), loam layer (4), coarse sand layer (3), and gravel layer (2); A silt intercepting layer (9) is provided in the riverbed (1) near the loam layer (4). One side of the silt intercepting layer (9) is parallel to the loam layer (4), and the other side is higher than the loam layer (4).

2. A bioretention bed for river management as described in claim 1, characterized in that, Drainage channels are provided on both sides of the riverbed (1). One side of each drainage channel has a high slope. The drainage channel is filled with a pebble layer (6). Several permeable bricks (7) are fixedly installed on the upper end of the pebble layer (6).

3. A bioretention bed for river management as described in claim 2, characterized in that, Multiple rainwater discharge outlets (101) are provided on the lower side of the inner wall of both drainage ditches.

4. A bioretention bed for river management as described in claim 1, characterized in that, The riverbed (1) has L-shaped dredging openings (102) on both sides near the intercepting silt layer (9). One of the two dredging openings (102) has a top cover (103) fixedly installed at the upper end, and the other dredging opening (102) has a dredging device (8) installed at the upper end.

5. A bioretention bed for river management as described in claim 4, characterized in that, The dredging device (8) includes a dredging pump (801), a dredging port (803) is fixedly provided on the lower side of the dredging pump (801), a dredging suction port (804) is fixedly provided at the lower end of the dredging pump (801), and a dredging pipe (802) is fixedly sleeved on the dredging suction port (804).

6. A bioretention bed for river management as described in claim 5, characterized in that, The dredging pipe (802) enters from the upper opening of the L-shaped dredging port (102) and extends out from the lower opening to clean the intercepting layer (9) and block the silt.

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