A water conservancy project water surface multi-level ecological concrete retaining wall structure and a construction method thereof

Abstract

The application belongs to the field of water conservancy ecology, and particularly relates to a water conservancy engineering water-front multi-level ecological concrete retaining wall structure and a construction method thereof, which comprises a retaining wall assembly, a connecting assembly and a planting groove assembly. The retaining wall assembly is used for river retaining wall construction, the connecting assembly is used for connecting water adding pipes A on adjacent two prefabricated partitions, and the planting groove assembly is used for connecting first-order planting grooves A, second-order planting grooves A and third-order planting grooves A of adjacent two prefabricated partitions. In the application, the retaining wall assembly and the planting groove assembly serving as the main body of the river retaining wall are both prefabricated from reinforced concrete, which greatly saves the time for retaining wall construction and green planting and improves the efficiency of retaining wall construction and green planting.

Description

Technical Field

[0001] This invention belongs to the field of water conservancy ecology, and in particular relates to a multi-layered ecological concrete retaining wall structure on the water-facing side of a water conservancy project and its construction method. Background Technology

[0002] With the acceleration of urbanization, urban water conservancy projects play a vital role in flood control, drainage, power generation, and disaster prevention and mitigation. However, traditional concrete retaining wall structures are questioned due to their rigid appearance and lack of ecological benefits. These retaining walls not only create a strong visual impact and increase the distance between residents and waterways, but their construction often requires large amounts of concrete materials and land resources, resulting in high project costs and severe environmental damage. Therefore, there is an urgent need for a retaining wall structure that can both meet the needs of water conservancy projects and improve the ecological environment of waterways.

[0003] Currently, there are instances of planting greenery on retaining walls along riverbanks, but these retaining walls are mostly constructed using cast-in-place concrete, resulting in long construction periods and low efficiency. Furthermore, planting greenery on the retaining walls after their initial construction is also time-consuming and inefficient.

[0004] This invention designs a multi-layered ecological concrete retaining wall structure for the water-facing side of a water conservancy project and its construction method to solve the above problems. Summary of the Invention

[0005] Based on this, it is necessary to address the existing problems with current river retaining walls and the planting of vegetation on them by providing a multi-layered ecological concrete retaining wall structure and its construction method for the water-facing side of water conservancy projects. Since the retaining wall components and planting trough components, which are the main body of the river retaining wall, are all prefabricated reinforced concrete, and the silt in the first-stage planting trough A and the first-stage planting trough B, as well as the permeable layer and nutrient soil layer in the second-stage planting trough A, third-stage planting trough A, second-stage planting trough B, and third-stage planting trough B, are all pre-filled at the factory, the side plates and cover plates in the first-stage planting trough A, second-stage planting trough A, third-stage planting trough A, first-stage planting trough B, second-stage planting trough B, and third-stage planting trough B only need to be removed during the retaining wall construction, which greatly saves the time of retaining wall construction and planting, and improves the efficiency of retaining wall construction and planting.

[0006] The above objectives are achieved through the following technical solutions: A multi-layered ecological concrete retaining wall structure for water-facing surfaces in water conservancy projects and its construction method, used for river retaining wall construction, comprising: Retaining wall components are used for river retaining wall construction. Several retaining wall components are evenly spaced along the length of the river and installed on a reinforced concrete foundation. Backfill is filled between any two adjacent retaining wall components and behind the retaining wall components. The backfill is flush with the top of the retaining wall components. The retaining wall components include precast reinforced concrete partitions. The water-facing side of the precast partitions has a stepped planting trough A, a second-stage planting trough A, and a third-stage planting trough A. Drainage holes are densely distributed on both sides of the first-stage planting trough A, the second-stage planting trough A and the third-stage planting trough A. The bottom of the second-stage planting trough A is connected to the inside of the first-stage planting trough A through a drainage pipe A. The bottom of the third-stage planting trough A is connected to the upper part of the second-stage planting trough A through a drainage pipe A. A water supply pipe A running along the length of the river is embedded in the precast partitions. The water supply pipe A is connected to the inside of the upper part of the third-stage planting trough A through a drip pipe.

[0007] A connecting assembly for connecting water supply pipes A on two adjacent prefabricated partitions.

[0008] The planting trough assembly is used to connect two adjacent prefabricated partitions: a first-stage planting trough A, a second-stage planting trough A, and a third-stage planting trough A. The planting trough assembly has a first-stage planting trough B, a second-stage planting trough B, and a third-stage planting trough B arranged in steps. Drainage holes are densely distributed on both sides of the first-stage planting trough B, the bottom of the second-stage planting trough B is connected to the first-stage planting trough B through a drain pipe B, and the bottom of the third-stage planting trough B is connected to the upper part of the second-stage planting trough B through a drain pipe B.

[0009] In one embodiment, the bottom of the prefabricated partition is pre-embedded with a base plate integrally connected to the internal steel bars. The base plate has two slots spaced apart front and back. Each slot has a wedge A with a higher rear and lower front on its rear inner wall. The wedge A cooperates with a wedge B installed on the foundation. The top plate at the front end of the base plate is threaded with a bolt A that cooperates with the river-facing side of the foundation.

[0010] In one embodiment, a reinforcing rib is connected between the top plate and the bottom plate, and the bottom of the wedge block B has a screw rod, which is threadedly connected to the pre-embedded screw sleeve B on the foundation.

[0011] In one embodiment, the drain pipe is fitted with a drain cage at its end to prevent it from getting clogged.

[0012] In one embodiment, the connecting assembly includes a connecting pipe, a limiting ring A, and a threaded sleeve A. The two connecting pipes are connected by a sleeve, and the pipe walls of the two connecting pipes are fitted together by two sealing rings. The connecting pipe is inserted into the pipe head sleeve at the end of the water supply pipe A, and the connecting pipe is fitted together with the water supply pipe A by a sealing gasket. The connecting pipe is fitted with a threaded sleeve A, which presses the limiting ring A against the water supply pipe head sleeve and is threadedly engaged with the pipe head sleeve.

[0013] In one embodiment, the planting trough assembly has connecting plates on both sides, and the connecting plates are connected to the support plates of the corresponding prefabricated partition sidewalls by bolts C.

[0014] In one embodiment, the prefabricated partition has side seats on both sides of its bottom and a water passage hole on the rear side of the prefabricated partition.

[0015] In one embodiment, the first-stage planting trough A is filled with silt, and nutrient soil planting bags are buried in the silt. The lower half of the second-stage and third-stage planting troughs A is filled with a permeable layer, and the upper half of the second-stage and third-stage planting troughs A is filled with a nutrient soil layer. A partition A is provided between the permeable layer and the nutrient soil layer. The middle of the partition A is a horizontal section with densely packed permeable holes, and the two sides of the partition A are inclined sections. Two side plates to prevent soil leakage are installed in the first-stage, second-stage, and third-stage planting troughs A by bolts B. The soil is sealed with a cover plate; the first-stage planting trough B is filled with silt, and nutrient soil planting bags are buried in the silt; the lower half of the second-stage and third-stage planting troughs B is filled with a permeable layer; the upper half of the second-stage and third-stage planting troughs B is filled with a nutrient soil layer; a horizontal partition B with a height less than that of partition A is set between the permeable layer and the nutrient soil layer; the partition B is densely covered with permeable holes; two side plates to prevent soil leakage and a cover plate to seal the soil are installed in the first-stage, second-stage, and third-stage planting troughs B by bolts B.

[0016] In one embodiment, one end of the water supply pipe A is fitted with a pipe cap, while the other end is fitted with a water supply pipe B that reaches the top of the prefabricated partition. The end of the water supply pipe is nested with a threaded sleeve C that presses its upper limit ring B against the water supply pipe A and is threadedly fitted with the end of the water supply pipe A. A sealing gasket is fitted between the water supply pipe B and the water supply pipe A.

[0017] In one embodiment, the construction method is as follows: S1. Cast-in-place reinforced concrete foundation.

[0018] S2. Several retaining wall components are evenly spaced and installed on the foundation along the length of the river channel. The water supply pipes A in each retaining wall component are connected by connecting components, and a pipe cap is installed at one end of the connected water supply pipe A.

[0019] S3. Install planting trough components between any two adjacent retaining wall components, so that the first-stage planting trough B is level with the first-stage planting trough A, the second-stage planting trough B is level with the second-stage planting trough A, the third-stage planting trough B is level with the third-stage planting trough A, and the bottom of the first-stage planting trough is level with the normal water level.

[0020] S4. First, fill the backfill graded stone material on the back side of the prefabricated partition and in the gap between two adjacent prefabricated partitions. Then, lay geotextile on the backfill graded stone material and fill the geotextile with miscellaneous fill soil until it is level with the top of the prefabricated partition. During the backfilling process, install water pipe B at the other end of the connected water supply pipe A to the ground plane and simultaneously bury a pumping pipe between any two adjacent prefabricated partitions. The lower end of the pumping pipe is located in the backfill graded stone material. After the backfilling is completed, install a safety railing on the top of the prefabricated partition.

[0021] S5. Plant aquatic plants such as reeds in the silt soil of the first-stage planting trough A and the first-stage planting trough B. Plant small flowering trees and small shrubs in the nutrient soil layer of the second-stage planting trough A and the second-stage planting trough B. Plant trees in the nutrient soil layer of the third-stage planting trough A and the third-stage planting trough B.

[0022] S6. Fill the riverbank with riprap to prevent water flow from eroding the bottom slab.

[0023] The beneficial effects of this invention are: Compared to the traditional method of constructing retaining walls by casting in place, the retaining wall components and planting trough components, which serve as the main body of the river retaining wall in this invention, are all prefabricated reinforced concrete. Furthermore, the silt in the first-stage planting trough A and the first-stage planting trough B, as well as the permeable layer and nutrient soil layer in the second-stage planting trough A, the third-stage planting trough A, the second-stage planting trough B, and the third-stage planting trough B, are all pre-filled at the factory. During the construction of the retaining wall, it is only necessary to remove the side plates and cover plates in the first-stage planting trough A, the second-stage planting trough A, the third-stage planting trough A, the first-stage planting trough B, the second-stage planting trough B, and the third-stage planting trough B, which greatly saves the time of retaining wall construction and greening planting and improves the efficiency of retaining wall construction and greening planting.

[0024] Furthermore, the retaining wall assembly is installed on the foundation through the cooperation of wedge A and wedge B, eliminating the need for drilling large holes in the foundation and installing bolts. Simply by rotating bolt A at the front end of the base plate after wedge B enters its slot, the retaining wall assembly can be moved horizontally, thereby achieving vertical tightening and fixation through the interaction of wedges A and B. This structure also facilitates the disassembly of the retaining wall assembly, significantly improving the efficiency of retaining wall construction. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the retaining wall section of the present invention.

[0026] Figure 2 These are schematic diagrams of prefabricated partitions from two different perspectives.

[0027] Figure 3 This is a schematic diagram of the cross-section of a prefabricated partition.

[0028] Figure 4 This is a partial cross-sectional schematic diagram of a prefabricated partition.

[0029] Figure 5 This is a partial cross-sectional schematic diagram of the internal structure of the three-tiered planting trough in the prefabricated partition.

[0030] Figure 6 This is a schematic diagram showing the combination of prefabricated partitions and planting trough components.

[0031] Figure 7 This is a cross-sectional schematic diagram of the connection component and the water supply pipe A on the two adjacent prefabricated partitions.

[0032] Figure 8 This is a cross-sectional diagram showing the fit between water inlet pipe A and the pipe cover, and the fit between water inlet pipe A and water inlet pipe B.

[0033] Figure 9 This is a cross-sectional schematic diagram of the retaining wall components and the foundation.

[0034] Figure 10 This is a schematic cross-sectional view of the internal structure of the slot on the base plate.

[0035] Figure 11 This is a schematic cross-sectional view of the capping structure of the second-stage or third-stage planting trough A on the retaining wall component.

[0036] Figure 12 This is a schematic diagram of wedge B.

[0037] Figure 13 This is a partial schematic diagram of the bottom of the retaining wall component.

[0038] Figure 14 This is a schematic diagram of the planting trough assembly and its cross-section.

[0039] Figure 15 This is a cross-sectional schematic diagram of the capping structure of the second-stage or third-stage planting trough B on the planting trough assembly.

[0040] Figure 16 This is a cross-sectional view of the connection between the planting trough assembly and the retaining wall assembly.

[0041] Figure 17 This is a cross-sectional diagram showing the planting trough assembly and the two adjacent retaining wall assemblies working together.

[0042] Figure 18 This is a schematic diagram showing the filling status of the first-stage planting trough A, second-stage planting trough A, and third-stage planting trough A on the retaining wall assembly, or the first-stage planting trough B, second-stage planting trough B, and third-stage planting trough B on the planting trough assembly.

[0043] Labels in the diagram: 100. Retaining wall assembly; 101. Precast partition; 102. First-stage planting trough A; 103. Second-stage planting trough A; 104. Third-stage planting trough A; 105. Drain pipe A; 106. Water inlet pipe A; 107. Pipe end sleeve; 108. Drip pipe; 109. Drainage cage; 110. Water passage hole; 111. Base plate; 112. Slot; 113. Wedge block A; 114. Top plate; 115. Reinforcing rib; 116. Side seat; 117. Support plate; 200. Connecting assembly; 201. Connecting pipe; 202. Limiting ring A; 203. Screw sleeve A; 300. Planting trough assembly; 301. First-stage planting trough B; 302. Second-stage planting trough B; 303. Third-stage planting trough AB; 304. Drain pipe B; 305. Connecting plate; 401. Sealing gasket; 402. Sealing ring; 403. Bolt A; 404. Wedge B; 405. Screw; 406. Screw sleeve B; 407. Foundation; 408. Pipe cover; 409. Water inlet pipe B; 410. Limiting ring B; 411. Screw sleeve C; 412. Partition A; 413. Horizontal section; 414. Inclined section; 415. Pumping pipe; 416. Safety railing; 417. Side plate; 418. Cover plate; 419. Bolt B; 420. Partition B; 421. Bolt C; 501. Silt; 502. Nutrient soil planting bags; 503. Permeable layer; 504. Nutrient soil layer; 505. Rockfill; 506. Backfill graded stone; 507. Geotextile; 508. Miscellaneous fill; 509. Normal water level. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0045] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] like Figure 1-18 As shown, a multi-layered ecological concrete retaining wall structure for the water-facing side of a water conservancy project and its construction method are disclosed, used for river retaining wall construction, comprising: like Figure 2 , 3 As shown in Figure 6, retaining wall assembly 100 is used for river retaining wall construction; several retaining wall assemblies 100 are evenly spaced along the length of the river and installed on the reinforced concrete foundation 407, as shown in Figure 6. Figure 1 As shown, backfill material is filled between any two adjacent retaining wall components 100 and behind the retaining wall component 100, with the backfill material flush with the top of the retaining wall component 100, as shown. Figure 2 , 3 As shown in Figure 4, the retaining wall assembly 100 includes a precast reinforced concrete partition 101. The water-facing side of the precast partition 101 has a stepped planting trough A102, a second-stage planting trough A103, and a third-stage planting trough A104. Drainage holes are densely distributed on both sides of the first-stage planting trough A102, second-stage planting trough A103, and third-stage planting trough A104. The bottom of the second-stage planting trough A103 is connected to the inside of the first-stage planting trough A102 via a drain pipe A105. The bottom of the third-stage planting trough A104 is connected to the upper part of the second-stage planting trough A103 via a drain pipe A105. Figure 4 , 5 As shown in Figure 6, a water supply pipe A106 is buried in the prefabricated partition 101, which runs through the length of the river channel. The water supply pipe A106 is connected to the upper part of the three-stage planting trough A104 through the drip pipe 108.

[0048] like Figure 6 , 7 As shown in Figure 8, the connecting component 200 is used to connect the water supply pipes A106 on two adjacent prefabricated partitions 101.

[0049] like Figure 14 , 16As shown, the planting trough assembly 300 is used to connect the first-stage planting trough A102, the second-stage planting trough A103, and the third-stage planting trough A104 of two adjacent prefabricated partitions 101. The planting trough assembly 300 has a first-stage planting trough B301, a second-stage planting trough B302, and a third-stage planting trough B distributed in a stepped manner. The first-stage planting trough B301, the second-stage planting trough B302, and the third-stage planting trough B are densely covered with drainage holes on both sides. The bottom of the second-stage planting trough B302 is connected to the first-stage planting trough B301 through a drain pipe B304. The bottom of the third-stage planting trough B is connected to the upper part of the second-stage planting trough B302 through a drain pipe B304.

[0050] In this invention, the retaining wall component 100 and the planting trough component 300, which serve as the main body of the river retaining wall, are both precast reinforced concrete. The silt 501 in the first-stage planting trough A102 and the first-stage planting trough B301, as well as the permeable layer 503 and nutrient soil layer 504 in the second-stage planting trough A103, the third-stage planting trough A104, the second-stage planting trough B302, and the third-stage planting trough B, are all pre-filled at the factory. During the construction of the retaining wall, it is only necessary to remove the side plates 417 and cover plates 418 in the first-stage planting trough A102, the second-stage planting trough A103, the third-stage planting trough A104, the first-stage planting trough B301, the second-stage planting trough B302, and the third-stage planting trough B. This greatly saves the time for retaining wall construction and greening planting, and improves the efficiency of retaining wall construction and greening planting.

[0051] In a further embodiment, such as Figure 3 , 9 As shown in Figure 10, the bottom of the prefabricated partition 101 is pre-embedded with a base plate 111 integrally connected with its internal reinforcing steel bars. The base plate 111 has two slots 112 spaced apart front and back. Each slot 112 has a wedge A113 with a higher rear side and a lower front side on its rear inner wall. Figure 9 , 10 As shown in Figure 12, wedge block A113 cooperates with wedge block B404 installed on foundation 407, and bolt A403 that cooperates with the riverside side of foundation 407 is threadedly connected to the top plate 114 at the front end of base plate 111.

[0052] In a further embodiment, such as Figure 9 As shown, a reinforcing rib 115 is connected between the top plate 114 and the bottom plate 111. The bottom of the wedge block B404 has a screw 405, which is threadedly connected to the pre-embedded screw sleeve B406 on the foundation 407.

[0053] In a further embodiment, such as Figure 5 As shown, a drain cage 109 is installed at the end of the drain pipe to prevent it from getting clogged.

[0054] In a further embodiment, such as Figure 7As shown, the connecting assembly 200 includes a connecting pipe 201, a limiting ring A202, and a threaded sleeve A203. The two connecting pipes 201 are sleeved together, and the pipe walls of the two connecting pipes 201 are fitted together by two sealing rings 402. The connecting pipe 201 is inserted into the pipe head sleeve 107 at the end of the water supply pipe A106, and the connecting pipe 201 and the water supply pipe A106 are fitted together by a sealing gasket 401. The connecting pipe 201 is fitted with a threaded sleeve A203, which presses the upper limiting ring A202 against the water supply pipe head sleeve 107 and is threadedly engaged with the pipe head sleeve 107.

[0055] In a further embodiment, such as Figure 2 , 14 As shown in Figure 16, the planting trough assembly 300 has connecting plates 305 on both sides, and the connecting plates 305 are connected to the support plates 117 of the side wall of the corresponding prefabricated partition 101 by bolts C421.

[0056] In a further embodiment, such as Figure 1 , 2 As shown, the prefabricated partition 101 has side seats 116 on both sides of its bottom, and a water passage hole 110 on the rear side of the prefabricated partition 101.

[0057] In a further embodiment, such as Figure 18 As shown, the first-stage planting trough A102 is filled with silt 501, and nutrient soil planting bags 502 are buried in the silt 501. The lower half of the second-stage planting trough A103 and the third-stage planting trough A104 is filled with a permeable layer 503, and the upper half of the second-stage planting trough A103 and the third-stage planting trough A104 is filled with a nutrient soil layer 504. Figure 11 , 17 As shown, a partition A412 is provided between the permeable layer 503 and the nutrient soil layer 504. The middle part of the partition A412 is a horizontal part 413 with densely packed permeable holes, and the two sides of the partition A412 are inclined parts 414. In the first-stage planting trough A102, the second-stage planting trough A103, and the third-stage planting trough A104, two side plates 417 to prevent soil leakage and a cover plate 418 to seal the soil are installed by bolts B419. Figure 15 , 16 As shown in Figure 18, the first-stage planting trough B301 is filled with silt 501, and a nutrient soil planting bag 502 is buried in the silt 501. The lower half of the second-stage planting trough B302 and the third-stage planting trough B is filled with a permeable layer 503, and the upper half of the second-stage planting trough B302 and the third-stage planting trough B is filled with a nutrient soil layer 504. A horizontal partition B420 with a height less than that of the partition A412 is set between the permeable layer 503 and the nutrient soil layer 504. The partition B420 is densely covered with permeable holes. The first-stage planting trough B301, the second-stage planting trough B302, and the third-stage planting trough B are all equipped with two side plates 417 to prevent soil leakage and a cover plate 418 to seal the soil by bolts B419.

[0058] In a further embodiment, such as Figure 1 , 8 As shown, one end of the water supply pipe A106 is fitted with a pipe cap 408, while the other end is fitted with a water supply pipe B409 that reaches the top of the prefabricated partition 101. The end of the water supply pipe is nested with a threaded sleeve C411 that presses its upper limit ring B410 against the water supply pipe A106 and is threadedly engaged with the end sleeve 107 of the water supply pipe A106. A sealing gasket 401 is fitted between the water supply pipe B409 and the water supply pipe A106.

[0059] The construction method of this invention is as follows: Cast-in-place reinforced concrete foundation 407.

[0060] Several retaining wall components 100 are evenly spaced along the length of the river channel and installed on the foundation 407. A screw 405 is screwed into the threaded sleeve B406 on the foundation 407. After tightening, the position of the wedge B404 is adjusted so that the wedge B404 can enter the slot 112. After the wedge enters the slot 112, the bolt A403 is turned, and the entire retaining wall component 100 is pulled forward by the base plate 111. The interaction between the wedge A113 and the wedge B404 makes the retaining wall component 100 firmly and vertically installed on the foundation 407. The side seats 116 on both sides of the bottom of the retaining wall component 100 can ensure the stability of the retaining wall component 100 after installation.

[0061] Connect the water supply pipes A106 in each retaining wall assembly 100 through the connecting assembly 200. Align the two ends of the connecting assembly 200 with the water supply pipes A106 in the two adjacent retaining wall assemblies 100, so that the two connecting pipes 201 in the connecting assembly 200 are extended relative to each other and connected to the corresponding end water supply pipes A106. Then rotate the threaded sleeves A203 on the two connecting pipes 201 to make them fit tightly with the pipe head sleeve 107 and complete the sealing connection between the connecting pipe 201 and the water supply pipe A106.

[0062] Install a pipe cap 408 at one end of the connected water supply pipe A106.

[0063] Remove the cover plate 418 and side plate 417 from the first-stage planting trough A102, the second-stage planting trough A103, the third-stage planting trough A104, the first-stage planting trough B301, the second-stage planting trough B302, and the third-stage planting trough B.

[0064] Then, a planting trough assembly 300 is installed between any two adjacent retaining wall assemblies 100, such that the first-stage planting trough B301 is level with the first-stage planting trough A102, the second-stage planting trough B302 is level with the second-stage planting trough A103, the third-stage planting trough B is level with the third-stage planting trough A104, and the bottom of the first-stage planting trough is level with the normal water level 509. The connecting plate 305 on the planting trough assembly 300 is connected to the support plate 117 on the retaining wall assembly 100 by bolt C421, thereby completing the installation and fixing of the planting trough between the two retaining wall assemblies 100.

[0065] First, backfill graded stone material 506 is filled into the back side of the prefabricated partition 101 and the gap between two adjacent prefabricated partitions 101. Then, geotextile 507 is laid on the backfill graded stone material 506. Finally, miscellaneous fill soil 508 is filled on the geotextile 507 until it is flush with the top of the prefabricated partition 101. During the backfilling process, a water supply pipe B409 is installed at the other end of the connected water supply pipe A106 to the ground plane. At the same time, a water pumping pipe 415 is buried between any two adjacent prefabricated partitions 101. The lower end of the water pumping pipe 415 is located in the backfill graded stone material 506. After the backfilling is completed, a safety railing 416 is installed on the top of the prefabricated partition 101.

[0066] After backfilling is completed, aquatic plants such as reeds are planted in the silt soil 501 of the first-stage planting trough A102 and the first-stage planting trough B301. Small flowering trees and small shrubs are planted in the nutrient soil layer 504 of the second-stage planting trough A103 and the second-stage planting trough B302. Trees are planted in the nutrient soil layer 504 of the third-stage planting trough A104 and the third-stage planting trough B. Fill the riverbank with 505 riprap to prevent water flow from eroding the bottom slab 111.

[0067] The function of water inlet pipe B409 is to allow water to seep into the nutrient soil layer 504 in the third-level planting trough A104 when the plants in the first-level planting trough A102, second-level planting trough A103, third-level planting trough A104, first-level planting trough B301, second-level planting trough B302, and third-level planting trough B need watering. The drain cage 109 at the end of the drain pipe can effectively prevent soil from clogging the drain pipe.

[0068] Water flowing through the drain pipe into the third-stage planting trough A104 is partially absorbed by the nutrient soil layer 504, and partially seeps down through the permeable holes in the middle of the partition A412 into the permeable layer 503 below, and then through the permeable holes on the side wall to the permeable layer 503 in the third-stage planting trough B of the adjacent planting trough assembly 300, or enters the nutrient soil layer 504 of the second-stage planting trough A103 through the drain pipe A105. Water reaching the nutrient soil layer 504 in the second-stage planting trough A103 is partially absorbed by the partition A412 to the permeable layer 503, and partially guided by the partition A412 to the nutrient soil layer 504 in the second-stage planting trough B302 of the two adjacent planting trough assemblies 300. Water flows through the inclined sections 414 on both sides of the partition A412 to the nutrient soil layer 504 of the third-stage planting trough B of the planting trough assembly 300 on both sides. Part of the water entering the nutrient soil layer 504 of the third-stage planting trough B is absorbed by the nutrient soil layer 504, and the other part flows through the permeable holes of the partition B420 to the permeable layer 503 below and then through the drain pipe B304 to the nutrient soil layer 504 of the second-stage planting trough B302. In this way, water is used to water all the plants in the first-stage planting trough A102, the second-stage planting trough A103, the third-stage planting trough A104, the first-stage planting trough B301, the second-stage planting trough B302, and the third-stage planting trough B in sequence from top to bottom or from the middle to the sides.

Claims

1. A multi-layered ecological concrete retaining wall structure for water-facing surfaces in water conservancy projects, used for river retaining wall construction, characterized in that, include: Retaining wall components are used for river retaining wall construction. Several retaining wall components are evenly spaced along the length of the river and installed on a reinforced concrete foundation. Backfill is filled between any two adjacent retaining wall components and behind the retaining wall components. The backfill is flush with the top of the retaining wall components. The retaining wall components include precast reinforced concrete partitions. The water-facing side of the precast partitions has a stepped planting trough A, a second-stage planting trough A, and a third-stage planting trough A. Drainage holes are densely distributed on both sides of the first-stage planting trough A, the second-stage planting trough A, and the third-stage planting trough A. The bottom of the second-stage planting trough A is connected to the inside of the first-stage planting trough A through a drainage pipe A. The bottom of the third-stage planting trough A is connected to the upper part of the second-stage planting trough A through a drainage pipe A. A water supply pipe A that runs through the length of the river is embedded in the precast partitions. The water supply pipe A is connected to the inside of the upper part of the third-stage planting trough A through a drip pipe. A connecting component for connecting water supply pipes A on two adjacent prefabricated partitions; The planting trough assembly is used to connect two adjacent prefabricated partitions: a first-stage planting trough A, a second-stage planting trough A, and a third-stage planting trough A. The planting trough assembly has a first-stage planting trough B, a second-stage planting trough B, and a third-stage planting trough B distributed in steps. Drainage holes are densely distributed on both sides of the first-stage planting trough B, the bottom of the second-stage planting trough B is connected to the first-stage planting trough B through a drain pipe B, and the bottom of the third-stage planting trough B is connected to the upper part of the second-stage planting trough B through a drain pipe B. The planting trough assembly has connecting plates on both sides, and the connecting plates are connected to the support plates of the corresponding prefabricated partition sidewalls by bolts C; One end of the water supply pipe A is fitted with a pipe cap, while the other end is fitted with a water supply pipe B that reaches the top of the prefabricated partition.

2. The multi-layered ecological concrete retaining wall structure for the water-facing side of a water conservancy project according to claim 1, characterized in that, The bottom of the prefabricated partition is pre-embedded with a base plate integrally connected to the internal steel bars. The base plate has two slots spaced apart front and back. Each slot has a wedge A with a higher rear and lower front on its rear inner wall. The wedge A cooperates with the wedge B installed on the foundation. The top plate at the front end of the base plate is threaded with a bolt A that cooperates with the river-facing side of the foundation.

3. A multi-layered ecological concrete retaining wall structure for the water-facing side of a water conservancy project according to claim 2, characterized in that, The top plate and the bottom plate are connected by reinforcing ribs, and the bottom of the wedge block B has a screw rod, which is threadedly connected to the pre-embedded screw sleeve B on the foundation.

4. The multi-layered ecological concrete retaining wall structure for the water-facing side of a water conservancy project according to claim 1, characterized in that, The connecting assembly includes a connecting pipe, a limiting ring A, and a threaded sleeve A. The two connecting pipes are connected by a sleeve, and the pipe walls of the two connecting pipes are fitted by two sealing rings. The connecting pipe is inserted into the pipe head sleeve at the end of the water supply pipe A, and the connecting pipe is fitted with the water supply pipe A by a sealing gasket. The connecting pipe is fitted with a threaded sleeve A, which presses the limiting ring A against the water supply pipe head sleeve and is threadedly engaged with the pipe head sleeve.

5. A multi-layered ecological concrete retaining wall structure for the water-facing side of a water conservancy project according to claim 1, characterized in that, The prefabricated partition has side seats on both sides of its bottom and a water passage hole on the rear side.

6. A multi-layered ecological concrete retaining wall structure for the water-facing side of a water conservancy project according to claim 1, characterized in that, The first-stage planting trough A is filled with silt, and nutrient soil planting bags are buried in the silt. The lower half of the second-stage and third-stage planting troughs A is filled with a permeable layer, and the upper half of the second-stage and third-stage planting troughs A is filled with a nutrient soil layer. A partition A is set between the permeable layer and the nutrient soil layer. The middle of the partition A is a horizontal part with dense permeable holes, and the two sides of the partition A are inclined. In the first-stage, second-stage, and third-stage planting troughs A, two side plates to prevent soil leakage and soil sealing are installed by bolts B. The cover plate; the first-stage planting trough B is filled with silt, and nutrient soil planting bags are buried in the silt. The lower half of the second-stage planting trough B and the third-stage planting trough B are filled with a permeable layer, and the upper half of the second-stage planting trough B and the third-stage planting trough B are filled with a nutrient soil layer. A horizontal partition B with a height less than that of partition A is set between the permeable layer and the nutrient soil layer. The partition B is densely covered with permeable holes. The first-stage planting trough B, the second-stage planting trough B, and the third-stage planting trough B are all equipped with two side plates to prevent soil leakage and a cover plate to seal the soil by bolts B.

7. A multi-layered ecological concrete retaining wall structure for the water-facing side of a water conservancy project according to claim 1, characterized in that, The end of the water supply pipe B is nested with a threaded sleeve C that presses its upper limit ring B against the water supply pipe A and is threadedly engaged with the end of the water supply pipe A. A sealing gasket is fitted between the water supply pipe B and the water supply pipe A.

8. A construction method for a multi-layered ecological concrete retaining wall structure on the water-facing side of a water conservancy project, as described in claim 1, characterized in that... The construction method is as follows: S1. Cast-in-place reinforced concrete foundation; S2. Arrange and install several retaining wall components evenly at intervals along the length of the river channel on the foundation, connect the water supply pipes A in each retaining wall component through connecting components, and install a pipe cap on one end of the connected water supply pipe A. S3. Install planting trough components between any two adjacent retaining wall components, so that the first-stage planting trough B is level with the first-stage planting trough A, the second-stage planting trough B is level with the second-stage planting trough A, the third-stage planting trough B is level with the third-stage planting trough A, and the bottom of the first-stage planting trough is level with the normal water level. S4. First, fill the backfill graded stone material in the gap between the back of the prefabricated partition and between two adjacent prefabricated partitions. Then, lay geotextile on the backfill graded stone material and fill the geotextile with miscellaneous fill soil until it is level with the top of the prefabricated partition. During the backfilling process, install water pipe B at the other end of the connected water supply pipe A to the ground plane and simultaneously bury a pumping pipe between any two adjacent prefabricated partitions. The lower end of the pumping pipe is located in the backfill graded stone material. After the backfilling is completed, install a safety railing on the top of the prefabricated partition. S5. Plant reeds in the silt soil of first-level planting trough A and first-level planting trough B, plant small flowering trees and small shrubs in the nutrient soil layer of second-level planting trough A and second-level planting trough B, and plant trees in the nutrient soil layer of third-level planting trough A and third-level planting trough B. S6. Fill the riverbank with riprap to prevent water flow from eroding the bottom slab.

Images