Fabricated tenon-and-mortise retention wall and construction method

Abstract

The invention discloses an assembly type mortise and tenon joint retention wall and a construction method. The retention wall comprises a foundation base, a vertical water baffle and a dust removal and dirt removal unit. The foundation base is formed by pouring reinforced concrete on the installation site, and a second mortise is formed in the foundation base. A plurality of groups of vertical water baffles are arranged according to water retaining requirements, second tenons matched with the second mortises are arranged at the bottoms of plate bodies of the vertical water baffles, and first mortises and first tenons matched with the first mortises are arranged on the two sides of the plate bodies correspondingly; the foundation base is connected with the vertical water baffles in a two-section mortise and tenon mode, and the water baffles are connected in a mortise and tenon and wedge nail tenon combination mode. The dust removal and decontamination unit comprises a water passing hole, a three-stage reservoir, a dust removal spraying pipe and a dredging spraying pipe; sewage is filtered through the water passing holes, then enters the third-stage water storage pool and is sprayed out from the dust removal spraying pipe and the desilting spraying pipe according to needs, and the dust falling function and the desilting function are achieved respectively. According to the retention wall, the stability of the overall structure is greatly improved, and water resources can be recycled.

Description

Technical Field

[0001] This invention belongs to the field of water-retaining wall technology, and more specifically, relates to a prefabricated mortise and tenon water-retaining wall and its construction method. Background Technology

[0002] A retaining wall is a structural facility used to block water flow and prevent water from overflowing or seeping. It is widely used in water conservancy projects, municipal construction, river management, and factory protection. It is usually constructed or poured using traditional building materials such as bricks, concrete, and reinforced concrete, and relies on its own weight and structural stability to withstand water pressure.

[0003] At present, the construction of retaining walls mostly adopts on-site casting or modular assembly, but both have some disadvantages: (1) On-site casting requires a lot of formwork construction, concrete mixing and pouring operations, which not only has a long construction period, but is also greatly affected by factors such as weather and workers' technical level, making it difficult to guarantee quality; (2) When assembling retaining walls with modules, the modules are generally connected and fixed with bolts, but as they age, the bolted retaining walls are prone to problems such as loosening and corrosion, leading to a decrease in structural stability; (3) The purpose of retaining walls is relatively simple and water resources cannot be recycled.

[0004] Therefore, there is an urgent need for a prefabricated water retaining wall that can transfer the production of water retaining walls from the site to the factory, realize standardized and large-scale production, solve problems such as loosening and corrosion of the connection parts due to aging, thereby greatly improving the stability of the overall structure and enabling the recycling of water resources. Summary of the Invention

[0005] To address the problems of difficult construction, unstable connection structure, and limited functionality of existing water-retaining walls, this invention provides a prefabricated mortise and tenon water-retaining wall and its construction method to solve these problems.

[0006] To achieve the above objectives, the present invention provides a prefabricated mortise and tenon retaining wall, comprising: a foundation base with a second mortise groove on which multiple sets of second mortise groove magnetic strips are fixedly installed at corresponding positions on the bottom of the second mortise groove; a vertical retaining plate disposed on the foundation base, the bottom of which has a second tenon adapted to the second mortise groove, and the sides of which have corresponding first mortise grooves and first tenons respectively; second tenon magnetic strips are provided on both sides of the bottom of the second tenon, and first tenon magnetic strips are embedded and fixedly installed at the ends of the first tenons, and first mortise groove magnetic strips are embedded and fixedly installed at corresponding positions on the bottom of the first mortise grooves; by inserting the second tenon into the second mortise groove, the second tenon magnetic strips are magnetically attracted to the corresponding second mortise groove magnetic strips, thereby realizing the mortise and tenon connection between the foundation base and the vertical retaining plate. The system includes a tenon and a cleaning unit, comprising a water storage component, a dust removal component, and a cleaning component. The water storage component includes a water passage hole, a water guide pipe, and a three-stage water storage tank. The water passage hole is located on the water-facing surface of the vertical baffle plate, filtering sewage and then transporting it to the three-stage water storage tank through the water guide pipe. The three-stage water storage tank is located inside the vertical baffle plate, and adjacent three-stage water storage tanks are connected to form a drainage channel. The height difference of multiple sets of vertical baffle plates is used to drain water into the collection well to avoid water accumulation. The dust removal component pumps water from the three-stage water storage tank for dust removal. The cleaning component pumps water from the three-stage water storage tank to flush the sludge below the water retaining wall.

[0007] Furthermore, the second tenon is a two-section tenon structure, including an inverted trapezoidal portion fixed to the bottom of the board body, and a cuboid portion fixed to the bottom of the inverted trapezoidal portion.

[0008] Furthermore, symmetrical first half-wedge holes are formed on both sides of the first tenon groove, and second half-wedge holes are formed on both sides of the first tenon. The first half-wedge hole is a semi-circular hole, located vertically at the center of the first tenon groove wall. The second half-wedge hole is a semi-circular hole with the same diameter as the first half-wedge hole, located vertically at the center of the side of the first tenon. By inserting the first tenon of the adjacent vertical baffle into the first tenon groove, the first half-wedge hole and the second half-wedge hole are aligned to form a circular wedge hole. A wedge rod is inserted into the wedge hole to lock and fix the adjacent vertical baffle, preventing them from separating.

[0009] Furthermore, multiple sets of water passage holes are arrayed on the water-facing surface of the vertical baffle plate, and these holes are frustoconical structures. The water passage holes are provided with a first filter layer, a second filter layer, and a third filter layer from the outside to the inside. The first filter layer is a coarse sand filter layer. The second filter layer is made of short fiber needle-punched geotextile. The third filter layer is made of stainless steel filter mesh.

[0010] Furthermore, the three-stage water storage tank is located inside the vertical baffle plate, and includes three independent chambers arranged in a stepped manner from high to low. The three chambers are respectively connected to water guide pipes to store the filtered water collected by the water passage holes.

[0011] Furthermore, the three-stage water storage tanks within the adjacent vertical baffles are connected by a sealing pipe to form a drainage channel. The sealing pipe includes a connecting pipe, a connecting sleeve, and a sealing ring. The connecting pipe has three sets, each connected to the top of one of the three cavities, with its other end located at the corresponding position on the outer end of the second tenon. The connecting sleeve has three sets, each connected to the other end of the top of one of the three cavities, with its other end located at the corresponding position on the bottom of the first tenon groove. The sealing ring is fitted onto the connecting pipe. After the adjacent vertical baffles are spliced ​​together, the connecting pipe is inserted into the connecting sleeve and sealed with the sealing ring for waterproofing, thus connecting the three cavities of the adjacent three-stage water storage tanks to form three drainage channels from high to low. Through the height difference design of the foundation base, after the water in the corresponding cavity reaches the threshold, the excess water is discharged into the collection well along the corresponding drainage channel.

[0012] Furthermore, a one-way magnetic flux valve is provided in the sealing tube between adjacent cavity chambers. The one-way magnetic flux valve includes a valve body, and a first magnet, a second magnet, and a magnetic valve disc disposed in the valve body.

[0013] According to another aspect of the present invention, a construction method for a prefabricated tenon-and-mortise retaining wall is also provided, comprising the following steps:

[0014] S100: Construction preparation, determining the installation location of the retaining wall, preparing construction materials and allocating corresponding construction equipment;

[0015] S200: Foundation base construction, foundation excavation, steel reinforcement cage binding, formwork installation, installation of second tenon mold and magnetic adsorption strip on the formwork, and concrete pouring for curing.

[0016] S300: Precast vertical water-retaining slabs, make steel reinforcement frames, fix the corresponding embedded parts, install formwork, pour and vibrate concrete, cure after completion, and test whether it meets the standards;

[0017] S400: Install vertical water baffles, hoist the vertical water baffles to the top of the foundation base, so that the second tenon is connected with the second mortise and tenon, and the first tenon is connected with the first mortise and tenon to realize the splicing of adjacent water baffles, and at the same time realize the connection of adjacent three-stage water storage tanks to form a drainage channel.

[0018] S500: Install dust removal spray pipe and sludge removal spray pipe, and connect them to the external interface of the pump unit respectively;

[0019] S600: Water retaining wall commissioning and acceptance, checking the water retaining wall's water guiding, water storage, drainage, dust removal and cleaning capabilities, and accepting the structural strength and connection firmness of the water retaining wall.

[0020] Furthermore, the foundation base construction described in step S200 includes the following steps:

[0021] S201: Excavate the foundation pit according to the design dimensions, ensuring a flat base and compacting the bottom to achieve the required density.

[0022] S202: According to the design reinforcement drawing, tie the steel bars in the foundation pit to form the steel reinforcement skeleton of the foundation base, and ensure that the specifications, spacing and connection method of the steel bars meet the specifications.

[0023] S203: Install the foundation base formwork to ensure that the formwork is accurate in size, tightly spliced, and firmly supported to prevent the formwork from running away during concrete pouring.

[0024] S204: Accurately fix the two-section tenon mold inside the template. The first section tenon is a cuboid, and the second section tenon is an inverted trapezoidal structure. At the same time, embed the magnetic adsorption strip made of neodymium iron boron permanent magnet into the reserved positions on both sides of the tenon to ensure that the adsorption strip and the tenon are precisely aligned. Install and fix the first locking hole mold at the corresponding position.

[0025] S205: Use ready-mixed concrete for pouring, control the slump and pouring speed of the concrete, and use a vibrator to compact it to avoid quality defects such as honeycomb and pitting; after pouring, the surface of the foundation base is smoothed to ensure flatness.

[0026] S206: After the foundation base concrete has set, cover it with plastic film or geotextile and water it for curing.

[0027] Furthermore, the prefabricated vertical water-retaining plate mentioned in step S300 includes the following steps:

[0028] S301: Based on the design reinforcement drawing of the vertical water-retaining plate, use equipment such as a rebar cutter and bending machine to process the rebar; fabricate a two-section tenon rebar skeleton, the first section of which is a cuboid structure and the second section of which is an inverted trapezoidal structure; at the same time, process the rebar of the main body of the water-retaining plate; strictly control the specifications, dimensions and shape of the rebar to ensure that they meet the design requirements; after processing, remove rust and straighten the rebar, and tie it according to the design requirements to form the rebar skeleton of the vertical water-retaining plate;

[0029] S302: Use customized steel or wooden formwork and install it according to the dimensions of the vertical water-retaining plate; apply release agent to the inside of the formwork to facilitate subsequent demolding; during installation, ensure that the formwork dimensions are accurate, the splicing is tight, and the support is firm to prevent the formwork from running away during concrete pouring; accurately reserve the positions of the first tenon, first tenon, wedge hole, water passage hole, and second locking hole on the formwork to ensure that they are consistent with the design dimensions;

[0030] S303: Accurately fix the first tenon and the first tenon mold at the corresponding positions of the steel reinforcement skeleton inside the template. At the same time, embed the magnetic adsorption strip of neodymium iron boron permanent magnet material into the reserved groove positions on both sides of the first tenon and the first tenon mold to ensure that the positions of the magnetic adsorption strip of the first tenon and the magnetic adsorption strip of the first tenon are precisely corresponding.

[0031] S304: Install the partition template and reserved hole mold of the three-stage water storage tank in the vertical water baffle steel skeleton at the corresponding design position; the three-stage water storage tank adopts a stepped design, and an independent chamber structure is formed inside the vertical water baffle according to the capacity requirements of each tank; at the same time, the butt sealing pipe is pre-embedded to ensure that the position of the butt sealing pipe is accurate and firm, and the pipe diameter of the butt sealing pipe is compatible with the one-way magnetic valve.

[0032] S305: Pre-embedded water pipes, connecting the PVC water pipes from inside the vertical baffle plate to the drainage holes one by one, using glue or hot melt to ensure a tight connection, with the lower end of the water pipes extending to the corresponding interface of the three-stage water storage tank to ensure smooth drainage.

[0033] S306: Pre-embedded connecting pipes and corresponding pump sets, and reserved external power supply interface for pump sets;

[0034] S307: Use ready-mixed concrete for pouring, and the concrete strength grade should meet the design requirements; control the slump and pouring speed of the concrete, and use a vibrator to compact it to avoid quality defects such as honeycomb and pitting.

[0035] S308: After the concrete of the vertical water-retaining slab has set, cover it with plastic film or geotextile and spray water for curing.

[0036] S309: Conduct quality inspection on the completed vertical water-retaining panels.

[0037] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0038] 1. The prefabricated mortise and tenon retaining wall of the present invention integrates a three-stage water storage tank at the bottom of the vertical retaining plate, utilizing rainwater storage to increase the structural self-weight and significantly improve structural stability and safety. The three-stage water storage tank adopts a "graded water storage and stepped drainage" design, which can quickly respond to different rainfall intensities and efficiently realize intelligent rainwater regulation and flood mitigation. The rainwater stored in the three-stage water storage tank is purified by a three-layer filtration system and used for dust removal spraying and dredging spraying, greatly improving the comprehensive utilization rate of water resources. The integrated design of the prefabricated mortise and tenon structure and the three-stage water storage tank reduces the independent construction links of traditional rainwater regulation and storage facilities, significantly reduces construction and operation and maintenance costs, and actively promotes green environmental protection and ecological construction. It innovatively integrates water retention, soil retention, load bearing and rainwater regulation functions into one, which reduces the land occupation area compared with the traditional separate structure and provides advantages in multi-functional integration and scenario expansion.

[0039] 2. In the prefabricated mortise and tenon retaining wall of the present invention, during the prefabrication of the foundation base and vertical retaining plate, two-section mortise / tenon molds and neodymium iron boron permanent magnet adsorption strips are pre-embedded simultaneously. The foundation base adopts a mortise and tenon design with a combination of two-section inverted trapezoidal platforms. The bottom of the vertical retaining plate corresponds to the two-section tenon, and the vertical retaining plate adopts a combination of mortise and tenon + wedge rod. This asymmetrical composite mortise and tenon structure enhances the connection strength. With the magnetic adsorption strips embedded on both sides of the tenon, it forms a dual connection mechanism of "mechanical interlocking + magnetic positioning". This solves the problems of poor positioning accuracy, time-consuming manual alignment, and limited connection stability of traditional single mortise and tenon connections. It meets the high-precision construction requirements of prefabricated buildings and avoids structural safety hazards caused by on-site assembly errors. The magnetic positioning enables rapid preliminary fixing of components, and the mechanical interlocking ensures high-strength connection, significantly improving component positioning efficiency, reducing on-site assembly errors, and greatly enhancing structural stability.

[0040] 3. The prefabricated tenon-and-mortise water-retaining wall of the present invention achieves integrated casting of the three-stage water storage tank and the main structure during the prefabrication of the vertical water-retaining plate. By precisely installing the partition template, a stepped water storage chamber is directly formed within the steel reinforcement frame. At the same time, water guide pipes and connecting pump sets are reserved. This integrated molding technology solves the problems of poor sealing and high leakage risk of traditional post-assembly three-stage water storage tanks. In addition, the water storage and drainage functions are separated from the main structure, making it impossible to use water storage to enhance the structural self-weight and affecting structural safety. It completely avoids the sealing problem of post-assembly and greatly reduces the risk of leakage. By increasing the structural self-weight through water storage and drainage, the stability of the structure under different working conditions is improved, and the organic unity of structural function and main structure is achieved.

[0041] 4. The prefabricated mortise and tenon retaining wall of the present invention is based on dynamic positioning assembly technology using magnetic adsorption. During the installation of the vertical retaining plate, the magnetic force of the mortise and tenon magnetic adsorption strip is used to achieve initial positioning, and millimeter-level fine adjustment is performed with theodolite and level to achieve precise assembly. This solves the problems of low efficiency and difficulty in ensuring high-precision installation in the traditional assembly method that relies on manual experience alignment, especially in large-scale construction, which can easily lead to extended construction period and inconsistent construction quality. It significantly improves assembly efficiency and achieves millimeter-level assembly accuracy. In large-scale prefabricated retaining wall construction, it effectively shortens the construction period.

[0042] 5. The prefabricated mortise and tenon retaining wall of this invention integrates the dust removal components, sludge removal components, and three-stage water storage tank during the construction phase. When installing sprinkler pipes on the top and bottom sides of the vertical retaining plate, they are directly connected to the three-stage water storage tank, forming a complete "rainwater collection-storage-functional application" system. This collaborative construction model of construction and functional systems allows the retaining wall to automatically perform dust suppression and sludge removal functions immediately after installation. This solves the problems of long construction cycles, easy component connection failures, and high system failure rates associated with traditional post-installation functional systems, making it difficult to achieve multi-functional integrated and efficient construction. The automatic dust suppression and sludge removal functions can be activated immediately after the retaining wall is installed, shortening the construction cycle and reducing the system failure rate.

[0043] 6. The prefabricated tenon-and-mortise water retaining wall of this invention innovatively adopts a layered pre-assembly-on-site rapid assembly process in the drainage hole treatment stage. The coarse sand filter layer, geotextile, and stainless steel filter screen are prefabricated into modular components, which are quickly fixed on-site by flanges or slots. This solves the problems of cumbersome installation, long time consumption, and difficulty in ensuring sealing in the traditional method of filling filter materials layer by layer on-site, which affects the filtration effect and overall performance of the drainage holes. It shortens the installation time of each drainage hole and greatly improves construction efficiency. The standardized connection method ensures the sealing of the filtration system, significantly improves the filtration effect and overall performance of the drainage holes, and ensures the stable operation of the drainage system. Attached Figure Description

[0044] Figure 1 This is a front view structural diagram of a prefabricated mortise and tenon retaining wall according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the AA cross-section of the water-retaining wall in an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the structure of the first tenon and the first tenon in an embodiment of the present invention;

[0047] Figure 4 This is a schematic cross-sectional view of BB in an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of the CC cross-section in an embodiment of the present invention;

[0049] Figure 6 This is a schematic diagram of the water passage assembly in an embodiment of the present invention;

[0050] Figure 7 This is a schematic diagram of the one-way flux valve in an embodiment of the present invention;

[0051] Figure 8 This is a schematic diagram of the vertical water baffle plate installed on the foundation base in an embodiment of the present invention;

[0052] Figure 9 This is a flowchart illustrating the construction method of a prefabricated mortise and tenon retaining wall according to an embodiment of the present invention.

[0053] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-base base, 101-second tenon, 102-first locking hole, 2-vertical baffle, 201-first tenon, 202-first tenon, 203-first half-wedge hole, 204-second half-wedge hole, 205-second tenon, 206-second locking hole, 3-water passage hole assembly, 301-first filter layer, 302-second filter layer, 303 - Third filter layer, 4- Water guide pipe, 5- Three-stage water storage tank, 6- Dust removal spray pipe, 7- Dredging spray pipe, 8- One-way magnetic valve, 801- Valve body, 802- First magnet, 803- Second magnet, 804- Magnetic valve disc, 9- Locking rod, 10- First tenon magnetic strip, 11- First tenon magnetic strip, 12- Connecting pipe, 13- External pipe, 14- Wedge rod, 15- Second tenon magnetic strip, 16- Second tenon magnetic strip. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0055] like Figure 1-8As shown, the present invention provides an assembled tenon and mortise retaining wall, including a base 1, a vertical retaining plate 2, and a dust removal and cleaning unit. The foundation base 1 is cast with reinforced concrete on site and has a second tenon 101. The vertical water-blocking plate 2 has multiple sets according to the water-blocking requirements. The bottom of the plate has a second tenon 205 that matches the second tenon 101, and the sides of the plate have matching first tenons 201 and first tenons 202 respectively. The foundation base 1 and the vertical water-blocking plate 2 are connected by a two-section tenon and mortise. The water-blocking plates 2 are connected by a tenon and mortise plus wedge tenon combination. With the neodymium iron boron permanent magnet adsorption strips embedded on both sides of the tenon, a dual connection mechanism of "mechanical interlocking plus magnetic positioning" is formed to realize the rapid and accurate assembly of the water-blocking wall. The dust removal and cleaning unit includes a water passage 3, a three-stage water storage tank 5, a dust removal spray pipe 6 and a sludge removal spray pipe 7. After being filtered through the water passage 3, the sewage enters the three-stage water storage tank 5 and is sprayed out from the dust removal spray pipe 6 and the sludge removal spray pipe 7 as needed to achieve the functions of dust reduction and sludge removal.

[0056] like Figure 1-3 As shown in the embodiment of the invention, the base 1 is cast from reinforced concrete, and a second mortise 101 is provided on its top. The structure of the second mortise 101 is adapted to the second tenon 205 provided at the bottom of the vertical baffle 2, and the mortise and tenon connection between the base 1 and the vertical baffle 2 is realized through fitting. Furthermore, a second mortise magnetic strip 16 is provided at a corresponding position in the second mortise 101, and the baffle 2 is quickly positioned and installed through magnetic attraction.

[0057] like Figure 1-5 As shown in the embodiment of the present invention, the vertical water baffle 2 adopts a modular design and can be prefabricated in the factory. It includes a plate body, a first tenon groove 201 and a first tenon 202 respectively provided on both sides of the plate body, and a second tenon 205 provided at the bottom of the plate body.

[0058] The first mortise 201 and the first tenon 202 are structurally compatible. The first tenon 202 is inserted into the first mortise 201, thereby achieving the positioning connection of adjacent vertical baffles 2.

[0059] Furthermore, to prevent adjacent vertical baffles 2 from detaching, first half-wedge holes 203 are symmetrically opened on both sides of the groove wall of the first tenon 201, and second half-wedge holes 204 are opened on both sides of the first tenon 202. The first half-wedge hole 203 is a semi-circular hole, located vertically at the center of the groove wall of the first tenon 201. The second half-wedge hole 204 is a semi-circular hole with the same diameter as the first half-wedge hole 203, located vertically at the center of the side of the first tenon 202. By inserting the first tenon 202 of the adjacent vertical baffles 2 into the first tenon 201, the first half-wedge hole 203 and the second half-wedge hole 204 are aligned to form a circular wedge hole. A wedge rod 14 is inserted into the wedge hole to lock and fix the adjacent vertical baffles 2, preventing them from detaching.

[0060] Furthermore, in order to quickly achieve the positioning and installation between the first tenon 202 and the first mortise 201 of the adjacent vertical water baffle 2, a first tenon magnetic strip 11 is embedded and fixed at the end of the first tenon 202, and a first mortise magnetic strip 10 is embedded and fixed at the corresponding position at the bottom of the first mortise 201. Through the magnetic attraction between the first mortise magnetic strip 10 and the first tenon magnetic strip 11, the rapid assembly between the first tenon 202 and the first mortise 201 is achieved, and the stability of the structure is enhanced by magnetic adsorption.

[0061] The second tenon 205 is located at the bottom of the board and is integrally cast with the board. Furthermore, the second tenon 205 is a two-section tenon structure, including an inverted trapezoidal section fixed at the bottom of the board and a cuboid section fixed at the bottom of the inverted trapezoidal section. The second tenon 205 of the two-section tenon structure is inserted into the second mortise 101 to achieve the tenon-and-mortise connection between the vertical water baffle 2 and the foundation base 1. Compared with a single wide tenon, the two-section tenon increases the contact surface of the tenon and mortise, which can improve the firmness of the tenon-and-mortise connection. It can distribute the force to different parts, reduce the stress on a single tenon, and make the structure more stable.

[0062] Furthermore, in order to achieve rapid positioning and installation of the bottom of the vertical water baffle 2 within the second tenon groove 101, the bottom sides of the second tenon 205 are inlaid with and fixed with second tenon magnetic strips 15. The second tenon magnetic strips 15 and the corresponding second tenon groove magnetic strips 16 are magnetically attracted, thereby realizing the rapid and accurate installation of the vertical water baffle 2 on the base base 1, and the stability of the structure is enhanced by magnetic adsorption.

[0063] Furthermore, to further enhance the connection strength between the vertical baffle plate 2 and the foundation base 1, and to prevent the vertical baffle plate 2 from detaching due to vibrations generated during water blocking, the foundation base 1 has multiple sets of first locking holes 102 parallel to each other on its upper end. The second tenon 205 at the bottom of the vertical baffle plate 2 has a second locking hole 206 on its upper end. Each set of vertical baffle plates 2 has two or more sets of parallel second locking holes 206, and the second locking holes 206 correspond to the positions of the first locking holes 102. After the vertical baffle plate 2 is installed on the foundation base 1, the second locking holes 206 are aligned with the first locking holes 102. By using a locking rod 9 to pass through the first locking holes 102 and the second locking holes 206 in sequence, the vertical displacement of the vertical baffle plate 2 is restricted, thereby strengthening the connection strength between the vertical baffle plate 2 and the foundation base 1 and effectively preventing the vertical baffle plate 2 from detaching due to vibrations generated during water blocking.

[0064] In this embodiment of the invention, the dust removal and cleaning unit is used to store water and remove dust and dirt from the water-retaining wall, and includes a water storage component, a dust removal component, and a cleaning component.

[0065] The water storage component includes a water passage 3, a water guide pipe 4, and a three-stage water storage tank 5.

[0066] like Figure 6As shown, multiple sets of water passage holes 3 are arranged on the water-facing surface of the vertical baffle plate 2. They are used to filter the incoming water and input it into the three-stage water storage tank 5. The holes are of a frustum-shaped structure and adopt a two-stage variable diameter design. The diameter of the inlet end is 80mm and the diameter of the outlet end is 50mm. The inner wall of the passage is provided with a 3° inclined guide slope and a guide length of 150mm. Furthermore, the three water passages are provided with a first filter layer 301, a second filter layer 302, and a third filter layer 303 from the outside to the inside. The first filter layer 301 is a coarse sand filter layer, which forms a primary interception barrier by filling quartz sand with a particle size of 2-5mm, effectively separating sand and gravel ≥5mm. The second filter layer 302 is made of short-fiber needle-punched geotextile, which uses polyester filament needle-punched nonwoven fabric with an equivalent pore size of 0.075mm (compliant with GB / T 17638-2017 standard) to achieve gradient filtration of fine sand particles (0.075-5mm). The third filter layer 303 is made of 304 stainless steel filter mesh, which is made by rolling a 200-mesh woven mesh (pore size of 0.074mm) from a 0.2mm thick stainless steel plate. The mesh surface is electrochemically polished, and the surface roughness Ra≤0.8μm, which can intercept sand particles ≥0.075mm. The two-stage variable diameter design accelerates drainage by self-guiding, avoids the risk of blockage, optimizes structural stress, and enhances resistance to deformation. A three-layer filtration system provides graded filtration, ensuring long-term anti-clogging and guaranteeing structural safety and stability. Preferably, the vertical water-retaining plate 2 has a 0.3% slope on its water-facing surface, allowing rainwater droplets to flow along the slope into the water passage holes 3, thus enabling rainwater collection and storage even in rainy weather.

[0067] The water guide pipe 4 is connected to multiple water passage holes 3 to guide and transport the filtered water to the three-stage water storage tank 5.

[0068] The three-stage water storage tank 5 is located within the vertical baffle 2. It comprises three independent chambers arranged in a stepped manner from high to low. Each of the three chambers is connected to a water guide pipe 4 to store the filtered water collected by the water passage holes 3. By installing the three-stage water storage tank 5 within the vertical baffle 2, the filtered water is introduced into the three-stage water storage tank 5 for storage, increasing the self-weight of the vertical baffle 2 and effectively improving the overall structure's ability to withstand water and soil pressure. Adjacent chambers are connected by sleeves, utilizing the water level difference to achieve rainwater gravity flow, reducing energy consumption and conforming to the development concept of green energy conservation. It realizes graded water storage and stepped drainage, reducing the impact of rainwater runoff on the municipal pipe network and lowering the risk of water pollution. The stored rainwater can be reused, improving the surrounding ecological environment and promoting the benign cycle of the ecosystem.

[0069] Furthermore, to prevent excessive rainwater from accumulating in front of the vertical water-retaining plate 2 and failing to drain away in time, the three-stage water storage tanks 5 in the adjacent vertical water-retaining plates 2 are connected by a sealing pipe to form a drainage channel. The water is drained into the collection well by utilizing the height difference of multiple sets of vertical water-retaining plates 2, thus avoiding excessive rainwater accumulation in front of the vertical water-retaining plate 2. The mating sealing pipe includes a mating joint pipe, a mating sleeve, and a sealing ring. The mating joint pipe has three sets, each connected to the top of one of the three cavities, with its other end located at the corresponding position on the outer end of the second tenon 205. The mating sleeve has three sets, each connected to the other end of the top of one of the three cavities, with its other end located at the corresponding position on the bottom of the first tenon 201. The sealing ring is fitted onto the joint pipe. After being spliced ​​by adjacent vertical baffles 2, the mating joint pipe is inserted into the mating sleeve and sealed with the sealing ring to prevent water from entering, thus connecting the three cavities of the adjacent three-stage water storage tank 5 to form three drainage channels from high to low. Through the height difference design of the foundation base 1, after the water in the corresponding cavity reaches the threshold, the excess water is discharged into the collection well along the corresponding drainage channel.

[0070] Furthermore, to prevent water from overflowing into adjacent and higher cavities after the cavity is full, thus hindering the effective and rapid drainage of accumulated water, a one-way magnetic valve 8 is also installed in the sealing pipe connecting the adjacent cavities; such as Figure 7 As shown, the one-way magnetic flux valve 8 includes a valve body 801, and a first magnet 802, a second magnet 803, and a magnetic valve disc 804 disposed within the valve body 801. The first magnet 802 is fixedly disposed at the drain outlet of the valve body 801, and water can flow through both ends of it. The second magnet 803 is slidably disposed in the middle of the inner cavity of the valve body 801, and its two sides repel the first magnet 802 and the magnetic valve disc 804 respectively, for adjusting the water inlet size. The magnetic valve disc 804 is disposed at the water inlet of the valve body 801, and it has a frustum structure, which is adapted to the cone structure of the water inlet of the valve body 801, and can seal the water inlet. When the water pressure at the water inlet is greater than that of the second magnet 803 and the magnetic valve disc, the valve can be closed. When there is a repulsive force between 804, the magnetic valve 804 is pushed to move towards the second magnet 803, opening the inlet and allowing water to flow to a lower position. When the water pressure at the inlet is greater than the repulsive force between the second magnet 803 and the magnetic valve 804, the magnetic repulsive force causes the magnetic valve 804 to reset and seal, preventing backflow of water from filling the cavity. Thus, rainwater is allowed to flow by gravity using the water level difference, ensuring that the three drainage channels formed by the adjacent three-stage water storage tanks 5 (high, medium, and low) quickly drain the filled water into the collection well, preventing water accumulation in front of the retaining wall. After the drainage operation is completed, a corresponding amount of water resources can be stored in the three-stage water storage tanks 5 for subsequent dust removal and sludge removal operations, allowing for secondary utilization of the water resources.

[0071] The dust removal assembly includes a dust removal spray pipe 6, which is located at the upper end of the vertical baffle plate 2 and is connected to the pump group pipeline through an external pipe 13 and a connecting pipe 121. The pump group draws filtered water for spray dust removal.

[0072] The cleaning component includes a sludge spray pipe 7, which is located at the lower end of the vertical baffle 2 and connected to the pump group through a pipeline. The pump group draws filtered water and sprays high-pressure water outward to flush the sludge below the baffle wall.

[0073] This invention also provides a construction method for a prefabricated mortise and tenon retaining wall, comprising the following steps:

[0074] S100: Construction preparation, determining the installation location of the retaining wall, preparing construction materials and allocating corresponding construction equipment;

[0075] S200: Foundation base construction, foundation excavation, steel reinforcement cage binding, formwork installation, installation of second tenon mold and magnetic adsorption strip on the formwork, and concrete pouring for curing.

[0076] S300: Precast vertical water-retaining slabs, make steel reinforcement frames, fix the corresponding embedded parts, install formwork, pour and vibrate concrete, cure after completion, and test whether it meets the standards;

[0077] S400: Install vertical water baffles, hoist the vertical water baffles to the top of the foundation base, so that the second tenon is connected with the second mortise and tenon, and the first tenon is connected with the first mortise and tenon to realize the splicing of adjacent water baffles, and at the same time realize the connection of adjacent three-stage water storage tanks to form a drainage channel.

[0078] S500: Install dust removal spray pipe and sludge removal spray pipe, and connect them to the external interface of the pump unit respectively;

[0079] S600: Water retaining wall commissioning and acceptance, checking the water retaining wall's water guiding, water storage, drainage, dust removal and cleaning capabilities, and accepting the structural strength and connection firmness of the water retaining wall.

[0080] In this embodiment of the invention, the construction preparation described in step S100 includes the following steps:

[0081] S101: Conduct detailed measurements of the construction site to determine the installation location, orientation (0.3% slope), and elevation of the retaining wall. Assess the geological conditions in conjunction with the design drawings to ensure that the foundation bearing capacity meets the requirements.

[0082] S102: According to the design requirements, prepare materials such as reinforced concrete foundation base, vertical water baffle, PVC water pipe, stainless steel permeable filter screen, dust removal spray pipe, sludge removal spray pipe, and one-way magnetic valve, and conduct magnetic, strength and other performance tests on neodymium iron boron permanent magnet adsorption strip and PA66+GF30 engineering plastic parts.

[0083] S103: Coordinate concrete pouring equipment, hoisting machinery, measuring instruments (levels, theodolites), pipe connection tools, etc., to ensure the normal operation of construction equipment.

[0084] In this embodiment of the invention, the construction of the foundation base in step S200 includes the following steps:

[0085] S201: Excavate the foundation pit according to the design dimensions, ensuring a flat base and compacting the bottom to achieve the required density.

[0086] S202: According to the design reinforcement drawing, tie the steel bars in the foundation pit to form the steel reinforcement skeleton of the foundation base, and ensure that the specifications, spacing and connection method of the steel bars meet the specifications.

[0087] S203: Install the foundation base formwork to ensure that the formwork is accurate in size, tightly spliced, and firmly supported to prevent the formwork from running away during concrete pouring.

[0088] S204: Accurately fix the two-section tenon mold inside the template. The first section tenon is a cuboid, and the second section tenon is a trapezoid with an inverted bottom. At the same time, embed the magnetic adsorption strip (20mm wide and 10mm thick) of neodymium iron boron permanent magnet material into the reserved positions on both sides of the tenon to ensure that the adsorption strip and the tenon are precisely aligned. Install and fix the first locking hole mold at the corresponding position.

[0089] S205: Use ready-mixed concrete for pouring, control the slump and pouring speed of the concrete, and use a vibrator to compact it to avoid quality defects such as honeycomb and pitting; after pouring, the surface of the foundation base is smoothed to ensure flatness.

[0090] S206: After the foundation concrete has set, cover it with plastic film or geotextile and water it for curing. The curing time shall not be less than 7 days. Subsequent construction can only be carried out when the strength reaches more than 70% of the design requirements.

[0091] In this embodiment of the invention, the prefabrication of the vertical water-blocking plate 2 in step S300 includes the following steps:

[0092] S301: Based on the design reinforcement drawing of the vertical water-retaining plate, use equipment such as a rebar cutter and bending machine to process the rebar; fabricate a two-section tenon rebar skeleton, the first section of which is a cuboid structure and the second section of which is an inverted trapezoidal structure; simultaneously process the rebar of the main body of the water-retaining plate; strictly control the specifications, dimensions and shape of the rebar to ensure that they meet the design requirements; after processing, remove rust and straighten the rebar, and tie it according to the design requirements to form the rebar skeleton of the vertical water-retaining plate;

[0093] S302: Use customized steel or wooden formwork, and install it according to the dimensions of the vertical water-retaining plate. Apply release agent to the inside of the formwork to facilitate subsequent demolding; during installation, ensure that the formwork dimensions are accurate, the joints are tight, and the supports are firm to prevent formwork displacement during concrete pouring; accurately pre-leave the positions of the first tenon, first tenon, wedge hole, water passage hole, and second locking hole on the formwork to ensure consistency with the design dimensions;

[0094] S303: Accurately fix the first tenon and the first tenon mold at the corresponding positions of the steel reinforcement skeleton inside the template. At the same time, embed the magnetic adsorption strip (20mm wide and 10mm thick) of neodymium iron boron permanent magnet material into the reserved groove positions on both sides of the first tenon and the first tenon mold to ensure that the positions of the magnetic adsorption strip of the first tenon and the magnetic adsorption strip of the first tenon are precisely aligned.

[0095] S304: Install the partition template and reserved hole mold of the three-stage water storage tank in the vertical water baffle steel skeleton at the corresponding design position; the three-stage water storage tank adopts a stepped design, and an independent chamber structure is formed inside the vertical water baffle according to the capacity requirements of each tank; at the same time, the butt sealing pipe is pre-embedded to ensure that the position of the butt sealing pipe is accurate and firm, and the pipe diameter of the butt sealing pipe is compatible with the one-way magnetic valve.

[0096] S305: Pre-embedded water pipes, connect the 25mm diameter PVC water pipes from inside the vertical baffle to the drainage holes one by one, and use glue or hot melt to ensure a tight connection. The lower end of the water pipe extends to the corresponding interface of the three-stage water storage tank to ensure smooth drainage.

[0097] S306: Pre-embedded connecting pipes and corresponding pump sets, and reserved external power supply interface for pump sets;

[0098] S307: Ready-mixed concrete shall be used for pouring, and the concrete strength grade shall meet the design requirements. The slump and pouring speed of the concrete shall be controlled, and a vibrator shall be used to compact the concrete to avoid quality defects such as honeycomb and pitting.

[0099] S308: After the vertical water-retaining slab concrete has set, cover it with plastic film or geotextile and water it for curing for no less than 7 days. During the curing period, check the concrete moisture regularly to ensure that the concrete is kept moist to ensure the normal growth of concrete strength; hoisting and installation can only be carried out when the strength of the vertical water-retaining slab reaches more than 70% of the design requirements.

[0100] S309: Conduct quality inspection on the completed vertical water-retaining panels, checking whether their dimensional deviations, appearance quality, and steel reinforcement protective layer thickness meet the design and specification requirements; focus on checking the quality of the first tenon groove, the first tenon, the through hole, and the magnetic adsorption strip to ensure they meet assembly and usage functions; check the integrity of the chamber partitions of the three-stage water storage tank inside the vertical water-retaining panel, the positional accuracy and sealing performance of the connecting sealing pipe, ensuring that the three-stage water storage tank is leak-free and meets the requirements for subsequent installation and use; for unqualified vertical water-retaining panels, repair or scrap them in a timely manner;

[0101] In this embodiment of the invention, the installation of the vertical water baffle 2 in step S400 includes the following steps:

[0102] S401: Use hoisting machinery to lift the prefabricated vertical water-retaining plate to the vicinity of the installation position to avoid collision damage;

[0103] S402: Align the second tenon with the second mortise and slowly lower it; use the magnetic strip of the second tenon and the corresponding magnetic strip of the second mortise to magnetically attract the vertical water baffle plate to initially position it, and then make manual fine adjustments to ensure that the tenon and mortise are fully engaged. Use a level and theodolite to monitor the verticality and horizontality of the vertical water baffle plate in real time, and control the deviation within the allowable range; use the locking rod to pass through the first locking hole and the second locking hole in sequence to strengthen the connection strength between the vertical water baffle plate 2 and the foundation base 1.

[0104] S403: Insert the first tenon of the adjacent vertical baffle into the first mortise, and at the same time insert the 50mm diameter wedge into the wedge hole. The connection stability is enhanced by the magnetic attraction between the magnetic strip of the first mortise and the magnetic strip of the first tenon. Complete the installation of all vertical baffles in sequence. After each vertical baffle is installed, the verticality and horizontality must be checked and adjusted.

[0105] S404: Install the water passage assembly. Inside the water passage, install the outer coarse sand filter layer (filled with 2-5mm quartz sand), the middle short fiber needle-punched geotextile (equivalent pore size 0.075mm polyester filament needle-punched nonwoven fabric, conforming to GB / T 17638-2017 standard), and the inner 304 stainless steel filter screen (200 mesh woven mesh, pore size 0.074mm, 0.2mm thickness, surface roughness Ra≤0.8μm) in sequence. The layers are fixedly connected by flanges or grooves to ensure a firm seal and prevent leakage.

[0106] The prefabricated mortise and tenon retaining wall of this invention integrates a three-stage water storage tank at the bottom of the vertical retaining plate, utilizing rainwater storage to increase the structure's self-weight and significantly improve structural stability and safety. The three-stage water storage tank adopts a "graded water storage and stepped drainage" design, which can quickly respond to different rainfall intensities and efficiently achieve intelligent rainwater regulation and flood mitigation. The rainwater stored in the three-stage water storage tank is purified by a three-layer filtration system and used for dust removal spraying and dredging spraying, greatly improving the comprehensive utilization rate of water resources. The integrated design of the prefabricated mortise and tenon structure and the three-stage water storage tank reduces the independent construction links of traditional rainwater regulation and storage facilities, significantly reducing construction and operation and maintenance costs, and actively promoting green environmental protection and ecological construction. It innovatively integrates water-blocking, soil-blocking, load-bearing and rainwater regulation functions into one, reducing the land occupation area compared with traditional separate structures, and providing advantages in multi-functional integration and scenario expansion.

[0107] The prefabricated mortise and tenon retaining wall of this invention incorporates two-section tenon / groove molds and neodymium iron boron permanent magnet adsorption strips during the prefabrication of the foundation base and vertical retaining plates. The foundation base adopts a mortise and tenon design with a combination of two inverted trapezoidal platforms. The bottom of the vertical retaining plate corresponds to the two-section tenons, and the vertical retaining plates are connected by a combination of tenons and wedges. This asymmetrical composite mortise and tenon structure enhances the connection strength while, in conjunction with the magnetic adsorption strips embedded on both sides of the tenons, forming a dual connection mechanism of "mechanical interlocking + magnetic positioning." This solves the problems of poor positioning accuracy, time-consuming manual alignment, and limited connection stability in traditional single mortise and tenon connections, meeting the high-precision construction requirements of prefabricated buildings and avoiding structural safety hazards caused by on-site assembly errors. Magnetic positioning enables rapid initial fixing of components, while mechanical interlocking ensures high-strength connections, significantly improving component positioning efficiency, reducing on-site assembly errors, and greatly enhancing structural stability.

[0108] The prefabricated mortise and tenon water-retaining wall of this invention achieves integrated casting of the three-stage water storage tank and the main structure during the prefabrication of the vertical water-retaining plate. Through precise installation of partition templates, a stepped water storage chamber is directly formed within the steel reinforcement frame. At the same time, water guide pipes and connecting pump sets are reserved. This integrated molding technology solves the problems of poor sealing and high leakage risk of traditional post-assembly three-stage water storage tanks. In addition, the water storage and drainage functions are separated from the main structure, making it impossible to use water storage to enhance the structural self-weight and affecting structural safety. It completely avoids the sealing problem of post-assembly and greatly reduces the risk of leakage. By increasing the structural self-weight through water storage and drainage, the stability of the structure under different working conditions is improved, and the organic unity of structural function and main structure is achieved.

[0109] The prefabricated mortise and tenon retaining wall of this invention is based on dynamic positioning assembly technology using magnetic adsorption. During the installation of the vertical retaining plate, the magnetic force of the mortise and tenon magnetic adsorption strips is used to achieve initial positioning, and millimeter-level fine adjustments are made with theodolites and levels to achieve precise assembly. This solves the problems of low efficiency and difficulty in ensuring high-precision installation in the traditional assembly method that relies on manual experience alignment, especially in large-scale construction, which can easily lead to extended construction period and inconsistent construction quality. It significantly improves assembly efficiency and achieves millimeter-level assembly accuracy. In large-scale prefabricated retaining wall construction, it effectively shortens the construction period.

[0110] The prefabricated mortise and tenon retaining wall of this invention integrates dust removal components, sludge removal components, and a three-stage water storage tank during the construction phase. When installing sprinkler pipes on the top and bottom sides of the vertical retaining wall, they are directly connected to the three-stage water storage tank, forming a complete "rainwater collection-storage-functional application" system. This collaborative construction model of construction and functional systems allows the retaining wall to automatically perform dust suppression and sludge removal functions immediately after installation. This solves the problems of long construction cycles, easy component connection failures, and high system failure rates associated with traditional post-installation functional systems, making it difficult to achieve multi-functional integrated and efficient construction. The automatic dust suppression and sludge removal functions can be activated immediately after the retaining wall is installed, shortening the construction cycle and reducing the system failure rate.

[0111] The prefabricated mortise and tenon retaining wall of this invention innovatively adopts a layered pre-assembly-on-site rapid assembly process in the drainage hole treatment stage. The coarse sand filter layer, geotextile, and stainless steel filter screen are prefabricated into modular components, which are quickly fixed on-site by flanges or slots. This solves the problems of cumbersome installation, long time consumption, and difficulty in ensuring sealing in the traditional method of filling filter materials layer by layer on-site, which affects the filtration effect of drainage holes and the overall performance. It shortens the installation time of each drainage hole and greatly improves construction efficiency. The standardized connection method ensures the sealing of the filtration system, significantly improves the filtration effect of drainage holes and the overall performance, and ensures the stable operation of the drainage system.

[0112] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A prefabricated mortise and tenon joint water-retaining wall, characterized in that, include: The base (1) is provided with a second tenon (101), and multiple sets of double tenon magnetic strips (16) are fixed at the bottom of the second tenon (101). A vertical water-blocking plate (2) is provided on the foundation base (1). The bottom of the plate body is provided with a second tenon (205) that matches the second tenon groove (101). The two sides of the plate body are respectively provided with matching first tenons (201) and first tenons (202). The bottom sides of the second tenon (205) are provided with second tenon magnetic strips (15). The end of the first tenon (202) is inlaid and fixed with a first tenon magnetic strip (11). The bottom of the first tenon groove (201) is inlaid and fixed at the corresponding position. A first mortise magnetic strip (10) is provided; the second tenon (205) is inserted into the second mortise (101) so that the second tenon magnetic strip (15) and the corresponding second mortise magnetic strip (16) are magnetically attracted to each other, thereby realizing the mortise and tenon connection between the base base (1) and the vertical baffle (2); the first tenon (202) is inserted into the first mortise (201) so that the first mortise magnetic strip (10) and the first tenon magnetic strip (11) are magnetically attracted to each other, thereby realizing the mortise and tenon connection between adjacent vertical baffles (2); The system includes a dust removal and cleaning unit, comprising a water storage component, a dust removal component, and a cleaning component. The water storage component includes a water passage hole (3), a water guide pipe (4), and a three-stage water storage tank (5). The water passage hole (3) is located on the water-facing surface of the vertical baffle plate (2). After filtering the sewage, it is transported to the three-stage water storage tank (5) through the water guide pipe (4). The three-stage water storage tank (5) is located inside the vertical baffle plate (2). Adjacent three-stage water storage tanks (5) are connected to form a drainage channel. The water is discharged into the collection well by utilizing the height difference of multiple sets of vertical baffle plates (2) to avoid water accumulation. The dust removal component pumps water out of the three-stage water storage tank (5) for dust removal. The cleaning component pumps water out of the three-stage water storage tank (5) to flush the sludge below the water retaining wall.

2. The prefabricated mortise and tenon retaining wall according to claim 1, characterized in that, The second tenon (205) is a two-section tenon structure, including an inverted trapezoidal section fixed to the bottom of the board and a cuboid section fixed to the bottom of the inverted trapezoidal section.

3. The prefabricated mortise and tenon retaining wall according to claim 1, characterized in that, The first tenon (201) has symmetrical first half-wedge holes (203) on both sides of the groove wall, and the first tenon (202) has second half-wedge holes (204) on both sides. The first half-wedge hole (203) is a semi-circular hole and is located at the center of the groove wall of the first tenon (201) in the vertical direction. The second half-wedge hole (204) is a semi-circular hole with the same diameter as the first half-wedge hole (203) and is located at the center of the side of the first tenon (202) in the vertical direction. The first tenon (202) of the adjacent vertical baffle (2) is inserted into the first tenon (201) so that the first half-wedge hole (203) and the second half-wedge hole (204) are aligned to form a circular wedge hole. A wedge rod (14) is inserted into the wedge hole to lock and fix the adjacent vertical baffle (2) to prevent them from separating.

4. A prefabricated mortise and tenon retaining wall according to any one of claims 1-3, characterized in that, The water passage holes (3) are arranged in multiple arrays on the water-facing surface of the vertical baffle plate (2), and are frustoconical structure holes; the water passage holes (3) are arranged in sequence from the outside to the inside as a first filter layer (301), a second filter layer (302) and a third filter layer (303); the first filter layer (301) is a coarse sand filter layer; the second filter layer (302) is made of short fiber needle-punched geotextile; the third filter layer (303) is made of stainless steel filter mesh.

5. A prefabricated mortise and tenon retaining wall according to any one of claims 1-3, characterized in that, The three-stage water storage tank (5) is located inside the vertical baffle plate (2). It includes three independent chambers arranged in a stepped manner from high to low. The three chambers are respectively connected to the water guide pipe (4) to store the filtered water collected by the water passage hole (3).

6. A prefabricated mortise and tenon retaining wall according to claim 5, characterized in that, The three-stage water storage tanks (5) in adjacent vertical baffles (2) are connected by a sealing pipe to form a drainage channel. The sealing pipe includes a joint pipe, a joint sleeve and a sealing ring. The joint pipe is provided in three sets, which are respectively connected to the top of the three cavities, and its other end is located at the corresponding position of the outer end of the second tenon (205). The joint sleeve is provided in three sets, which are respectively connected to the other end of the top of the three cavities, and its other end is located at the corresponding position of the bottom of the first tenon (201). The sealing ring is fitted on the joint pipe. After the adjacent vertical baffles (2) are spliced, the joint pipe is inserted into the joint sleeve and sealed and waterproofed by the sealing ring, so that the three cavities of the adjacent three-stage water storage tanks (5) are connected to form three drainage channels from high to low. Through the height difference design of the foundation base (1), after the water in the corresponding cavity reaches the threshold, the excess water is discharged into the collection well along the corresponding drainage channel.

7. A prefabricated mortise and tenon retaining wall according to claim 6, characterized in that, A one-way magnetic flux valve (8) is also provided in the sealing pipe between the adjacent cavities. The one-way magnetic flux valve (8) includes a valve body (801), a first magnet (802), a second magnet (803), and a magnetic valve disc (804) disposed in the valve body (801).

8. The construction method of the prefabricated mortise and tenon retaining wall as described in any one of claims 1-7, characterized in that, Includes the following steps: S100: Construction preparation, determining the installation location of the retaining wall, preparing construction materials and allocating corresponding construction equipment; S200: Foundation base construction, foundation excavation, steel reinforcement cage binding, formwork installation, installation of second tenon mold and magnetic adsorption strip on the formwork, and concrete pouring for curing. S300: Precast vertical water-retaining slabs, make steel reinforcement frames, fix the corresponding embedded parts, install formwork, pour and vibrate concrete, cure after completion, and test whether it meets the standards. S400: Install vertical water baffles, hoist the vertical water baffles to the top of the foundation base, so that the second tenon is connected with the second mortise and tenon, and the first tenon is connected with the first mortise and tenon to realize the splicing of adjacent water baffles, and at the same time realize the connection of adjacent three-stage water storage tanks to form a drainage channel. S500: Install dust removal spray pipe and sludge removal spray pipe, and connect them to the external interface of the pump unit respectively; S600: Water retaining wall commissioning and acceptance, checking the water retaining wall's water guiding, water storage, drainage, dust removal and cleaning capabilities, and accepting the structural strength and connection firmness of the water retaining wall.

9. A construction method for a prefabricated mortise and tenon retaining wall according to claim 8, characterized in that, The foundation base construction described in step S200 includes the following steps: S201: Excavate the foundation pit according to the design dimensions, ensuring a flat base and compacting the bottom to achieve the required density. S202: According to the design reinforcement drawing, tie the steel bars in the foundation pit to form the steel reinforcement skeleton of the foundation base, and ensure that the specifications, spacing and connection method of the steel bars meet the specifications. S203: Install the foundation base formwork to ensure that the formwork is accurate in size, tightly spliced, and firmly supported to prevent the formwork from running away during concrete pouring. S204: Accurately fix the two-section tenon mold inside the template. The first section tenon is a cuboid, and the second section tenon is an inverted trapezoidal structure. At the same time, embed the magnetic adsorption strip made of neodymium iron boron permanent magnet into the reserved positions on both sides of the tenon to ensure that the adsorption strip and the tenon are precisely aligned. Install and fix the first locking hole mold at the corresponding position. S205: Use ready-mixed concrete for pouring, control the slump and pouring speed of the concrete, and use a vibrator to compact it to avoid quality defects such as honeycomb and pitting; after pouring, the surface of the foundation base is smoothed to ensure flatness. S206: After the foundation base concrete has set, cover it with plastic film or geotextile and water it for curing.

10. A construction method for a prefabricated mortise and tenon retaining wall according to claim 8, characterized in that, Step S300, which involves prefabricating a vertical water-retaining plate, includes the following steps: S301: Based on the design reinforcement drawing of the vertical water-retaining plate, use equipment such as a rebar cutter and bending machine to process the rebar; fabricate a two-section tenon rebar skeleton, the first section of which is a cuboid structure and the second section of which is an inverted trapezoidal structure; at the same time, process the rebar of the main body of the water-retaining plate; strictly control the specifications, dimensions and shape of the rebar to ensure that they meet the design requirements; after processing, remove rust and straighten the rebar, and tie it according to the design requirements to form the rebar skeleton of the vertical water-retaining plate; S302: Use customized steel or wooden formwork and install it according to the dimensions of the vertical water-retaining plate; apply release agent to the inside of the formwork to facilitate subsequent demolding; during installation, ensure that the formwork dimensions are accurate, the splicing is tight, and the support is firm to prevent the formwork from running away during concrete pouring; accurately reserve the positions of the first tenon, first tenon, wedge hole, water passage hole, and second locking hole on the formwork to ensure that they are consistent with the design dimensions; S303: Accurately fix the first tenon and the first tenon mold at the corresponding positions of the steel reinforcement skeleton inside the template. At the same time, embed the magnetic adsorption strip of neodymium iron boron permanent magnet material into the reserved groove positions on both sides of the first tenon and the first tenon mold to ensure that the positions of the magnetic adsorption strip of the first tenon and the magnetic adsorption strip of the first tenon are precisely corresponding. S304: Install the partition template and reserved hole mold of the three-stage water storage tank in the vertical water baffle steel skeleton at the corresponding design position; the three-stage water storage tank adopts a stepped design, and an independent chamber structure is formed inside the vertical water baffle according to the capacity requirements of each tank; at the same time, the butt sealing pipe is pre-embedded to ensure that the position of the butt sealing pipe is accurate and firm, and the pipe diameter of the butt sealing pipe is compatible with the one-way magnetic valve. S305: Pre-embedded water pipes, PVC water pipes are placed inside the vertical baffle and connected one by one with the drainage holes. Adhesive or hot-melt method is used to ensure tight connection. The lower end of the water pipe extends to the corresponding interface of the three-stage water storage tank to ensure smooth drainage. S306: Pre-embedded connecting pipes and corresponding pump sets, and reserved external power supply interface for pump sets; S307: Use ready-mixed concrete for pouring, and the concrete strength grade should meet the design requirements; control the slump and pouring speed of the concrete, and use a vibrator to compact it to avoid quality defects such as honeycomb and pitting. S308: After the concrete of the vertical water-retaining slab has set, cover it with plastic film or geotextile and spray water for curing. S309: Conduct quality inspection on the completed vertical water-retaining panels.

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