Modular, detachable water retaining block and method of use

Abstract

The application discloses a kind of modular detachable water retaining brick and use method, water retaining brick includes by polypropylene press molding water retaining brick main body, main body upper portion symmetrically provided with the positioning column of water injection hole and positioning column, main body top is equipped with upper boss, bottom is equipped with with upper boss shape matching lower cooperation concave boss, two side end faces are respectively equipped with female interface and male interface.Form linear or curved structure by female interface and male interface before and after splicing, by upper boss and lower cooperation concave boss, water retaining height is promoted, and by the positioning column of water injection hole, water is injected to the inside of main body to increase self-weight;The application realizes quick assembly disassembly, reuse, with good sealing, structural stability and topographic adaptability, can be widely applied to flood control and flood prevention, construction fence, bridge drip groove and complex terrain temporary water retaining engineering.

Description

Technical Field

[0001] This invention belongs to the technical field of construction water retention and rapid construction of temporary ditches in caverns, and in particular relates to a modular and detachable water-retaining brick and its usage method. Background Technology

[0002] In engineering scenarios such as water conservancy construction, urban flood control, rail transit construction, and tunnel excavation, the rapid erection and dismantling of temporary water-retaining facilities are crucial for ensuring project safety and construction efficiency. Taking tunnel construction as an example, temporary ditch water-retaining facilities need to be constructed to divert seepage or construction wastewater; in urban flood control, temporary water-retaining walls must be quickly erected to protect building entrances, underground parking garages, and critical infrastructure during heavy rains or river backflow; in rail transit viaduct construction, temporary barriers for drip channels need to be flexibly arranged on long-distance curved structures. All these scenarios place comprehensive demands on water-retaining facilities, requiring rapid installation, convenient dismantling, reusability, adaptability to curved terrain, and sufficient anti-overturning stability. Traditional solutions have revealed a series of structural and functional shortcomings in addressing these needs, necessitating a new type of modular water-retaining device that balances rapid installation and dismantling, reusability, terrain adaptability, and structural stability.

[0003] Currently, common temporary water-blocking methods used in construction sites and emergency flood control mainly include manually stacking sandbags, installing metal or fiberglass water-blocking panels, deploying L-shaped water-pressure self-anchoring retaining walls, and water-filled emergency flood control boxes. Manually stacking sandbags is the most traditional method, where sand is filled into woven bags and stacked layer by layer to form a water-blocking structure; the construction materials can be sourced locally. Metal or fiberglass water-blocking panels typically consist of multiple panels joined together by bolts, slots, or mortise and tenon joints to form a continuous water-blocking surface. Some products have water-stop strips or elastic pads at the bottom of the panels to enhance the seal with the ground. L-shaped water-pressure self-anchoring retaining walls utilize the downward pressure and backward thrust generated by the weight of the water on the water-facing side of the wall to press the bottom of the wall firmly against the ground, achieving self-anchoring without the need for additional piling. Water-filled emergency flood control boxes use a hollow box structure, increasing their weight by filling the box with water to resist water pressure. Adjacent boxes are joined using independent connectors such as dovetail joints, allowing for a certain angle of deflection to accommodate curved layouts.

[0004] Each of the aforementioned existing technical solutions has significant shortcomings. Sandbag stacking requires a large amount of manpower for transportation and layer-by-layer stacking, resulting in extremely low construction efficiency. Furthermore, sandbag materials are easily damaged after soaking and sun exposure, making them unrecyclable and unusable. Dismantling leaves behind a large amount of waste that needs to be cleaned up. Metal or fiberglass retaining panels are heavy, requiring multiple people to handle and assemble them. Bolt or clip-on connections are time-consuming, especially in large-scale deployments where installation efficiency becomes a bottleneck. Additionally, their connection structures are mostly fixed angles, unable to continuously and flexibly adjust the curvature, making them poorly adaptable to curved river channels or irregularly shaped construction areas. L-shaped water-pressure self-anchored retaining walls rely on the weight of floodwater for anchoring. In the initial stage of water retention when the water level is low, insufficient anchoring force easily leads to slippage. Moreover, the panels are only connected by simple abutment or Velcro fasteners, lacking effective inter-layer and seam sealing structures, resulting in a high risk of leakage. While water-filled emergency flood control boxes achieve weight increase through water filling and lightweight hollow design, their adjacent boxes rely on independent dovetail connectors for assembly. These connectors are separate components, requiring additional transport and matching during on-site installation, increasing operational steps and component management complexity. Furthermore, the boxes rely solely on a bottom impermeable layer for sealing, lacking multi-layered sealing methods for vertical seams and horizontal seams between layers. In summary, existing technologies have not resolved the contradictions between installation efficiency and sealing reliability, terrain adaptability and structural overturning stability, and material recyclability and modularity. Therefore, a modular, detachable flood-retaining brick and its usage method are needed to address these issues. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a modular and detachable water-retaining brick and its usage method, which aims to overcome the problems of low installation efficiency, poor sealing reliability, insufficient terrain adaptability and difficulty in recycling and reuse of traditional water-retaining facilities. It features integrated arc interface angle continuously adjustable splicing, multi-layer water-stop sealing system, water injection weight increase anti-overturning and modular full recycling.

[0006] To achieve the above technical solution, the technical solution adopted by the present invention is as follows: A modular, detachable water-retaining brick includes a water-retaining brick body made of polypropylene compression molding; at least one positioning column with a water injection hole, vertically fixed to the upper part of the water-retaining brick body for injecting water into the body to increase its weight; positioning columns located on the other side of the upper part of the water-retaining brick body, symmetrically distributed with the positioning columns with water injection holes; a boss on top of the water-retaining brick body; a recessed platform at the bottom of the water-retaining brick body, the shape of which matches the boss on top, for stacking multiple water-retaining bricks; and concave and convex interfaces located on the two end faces of the water-retaining brick body for forming an adjustable-angle assembly structure when spliced ​​front and back.

[0007] Preferably, the concave interface is a semi-cylindrical groove with an arc-shaped concave surface, the inner surface of which extends vertically, and its arc radius is... The thickness is 1.5 to 2.5 times the wall thickness of the main body of the water-retaining brick; the convex interface is a semi-cylindrical protrusion with an arc-shaped outer convex surface, the arc-shaped outer surface of the protrusion extends vertically, and its arc radius is the same as the arc radius of the groove. Equal; during splicing, the inner surface of the concave interface arc of two adjacent water-retaining bricks and the outer surface of the convex interface arc form a coaxial arc surface contact fit, and the two can rotate relative to each other around a common vertical axis, with a rotation angle range of [missing information]. to When the two are fully fitted together, the splicing structure is straight; when the two rotate relative to each other, an angle is formed between the longitudinal axes of the two bricks, and the angle is equal to the relative rotation angle.

[0008] Preferably, the positioning column is a solid column structure; a positioning blind hole is provided on each side of the mating recess below the water-retaining brick; when stacking, one of the positioning columns with water injection holes located on the top sides of the lower brick and another positioning column are respectively inserted into the positioning blind holes on both sides of the mating recess below the bottom of the upper brick to form a pin-hole mating positioning, which restricts the horizontal relative displacement between the upper and lower bricks; the mating surface of the upper boss of the water-retaining brick and the lower mating recess of the water-retaining brick is a trapezoidal structure.

[0009] Preferably, one or more vertical water-stop grooves are formed on the concave surface of the concave interface along the vertical direction, and one or more vertical water-stop ridges are provided on the convex surface of the convex interface at positions corresponding to the vertical water-stop grooves. The cross-sectional shape of the vertical water-stop ridges matches the vertical water-stop grooves. During splicing, the vertical water-stop ridges are embedded in the vertical water-stop grooves to form a tortuous sealing path along the vertical direction. An elastic sealing strip is also embedded in the vertical direction between the arc mating surfaces of the concave and convex interfaces to fill the tiny gaps between the arc mating surfaces after splicing and compression.

[0010] Preferably, an upper transverse water-stop groove is formed along the length of the upper surface of the protrusion above the water-retaining brick, and a lower transverse water-stop groove is formed on the bottom inner surface of the mating recess below the water-retaining brick at a position corresponding to the upper transverse water-stop groove; after the two water-retaining bricks are stacked, the upper transverse water-stop groove and the lower transverse water-stop groove are aligned to form a transverse sealing cavity, and a water-swellable rubber sealing strip is placed inside the cavity; a flexible skirt extending downward is provided around the bottom periphery of the mating recess below the water-retaining brick, and the flexible skirt is integrally formed with the water-retaining brick body by two-color injection molding or secondary injection molding using thermoplastic elastomer material.

[0011] Preferably, the interior of the water-retaining brick body is a hollow structure, and a water injection channel is vertically opened inside the positioning column with water injection holes; a circular water passage hole is opened in the hollow cavity of the water-retaining brick body at the installation position corresponding to the positioning column with water injection holes, and the lower end of the water injection channel is axially aligned with and sealed to the circular water passage hole, forming a complete water injection path from the water injection hole through the water injection channel and the circular water passage hole to the hollow cavity; an elastic inner lining layer is fixedly attached to the inner wall of the hollow cavity, and the elastic inner lining layer is made of closed-cell foamed polyethylene or foamed polyurethane. When the water in the cavity freezes and expands in volume, the closed-cell cells of the elastic inner lining layer are compressed, providing volume compensation space for the expansion of the ice.

[0012] Preferably, multiple modular, detachable water-retaining bricks are stacked vertically and spliced ​​front to back to form a continuous water-retaining wall. The bending angle of the continuous water-retaining wall is adjusted by the docking method of the concave interface and the convex interface. The maximum number of stacked layers when the water-retaining bricks are stacked vertically is: ; in The required total height of the water barrier. The height of a single water-retaining brick; the number of stacked layers must meet the overturning stability requirements. ; in This is the total self-weight of the wall structure after water injection. The thickness of the main body of the water-retaining brick along the water-retaining direction. The total hydrostatic pressure acting on the water-facing surface of the wall. The water depth in front of the wall. For overturning safety factor and ;when If the anti-overturning stability condition is not met, diagonal bracing is added to the backwater side of the wall.

[0013] Preferably, the top of the positioning column with water injection hole is provided with a sealing cover; the sealing cover is made of the same polypropylene material as the main body of the water-retaining brick, including a top disc and a cylindrical sealing plug extending downward from the center of the lower surface of the top disc; the cylindrical sealing plug and the water injection hole achieve a primary seal through an interference fit; the lower surface edge of the top disc is provided with a downwardly protruding annular water-retaining edge, which is tightly bound to the outer circumferential surface of the top outer wall of the positioning column with water injection hole to form a secondary seal.

[0014] Preferably, a method of using a modular, detachable water-retaining brick includes the following steps: Multiple modular and detachable water-retaining bricks are arranged according to terrain requirements, and are spliced ​​together with the concave interface and the convex interface to form a straight or curved structure; Multiple modular and detachable water-retaining bricks are vertically stacked by connecting the upper protrusion of the water-retaining brick with the lower concave platform of the water-retaining brick to increase the water-retaining height. Water is injected into the interior of the water-retaining brick body through the positioning column with water injection holes to increase overall stability; after use, the water is drained and the modular detachable water-retaining brick is disassembled for recycling and reuse.

[0015] Preferably, during water injection, the sealing cap is unscrewed, the water injection pipe is inserted into the water injection hole and connected to the water source. Water flows into the hollow cavity of the water-retaining brick body through the water injection channel. Water injection is stopped when water overflows from the water injection hole, the water injection pipe is pulled out, and the water injection hole is resealed. During drainage, the sealing cap is unscrewed, and the water-retaining brick body is flipped over. The accumulated water flows out by gravity; for large water-retaining bricks that cannot be turned over, the water is guided out by the siphon effect by inserting a flexible drainage pipe into the water injection hole.

[0016] The beneficial effects of this invention are as follows: 1. This invention utilizes a modular water-retaining brick body formed by polypropylene compression molding. The brick body features a trapezoidal mating surface with an upper boss and a lower mating recess at the top and bottom, respectively. Combined with a positioning column and a pin-hole positioning structure, the upper and lower bricks automatically center and lock together during stacking, allowing for vertical stacking by hand without any external tools. Integrated arc-shaped concave and convex interfaces are provided on both sides of the brick body, allowing adjacent bricks to be directly spliced ​​through coaxial arc-shaped contact, eliminating the need for carrying and installing separate connectors. After use, the sealed cap is unscrewed to drain the water from the cavity, and the interfaces are separated to complete disassembly. No structural damage occurs during disassembly and assembly, allowing for complete recycling and direct reuse in the next project. Through the above structural design, this invention achieves high efficiency in installation and disassembly, as well as material reusability, overcoming the shortcomings of traditional sandbag stacking installation (time-consuming and labor-intensive, with materials discarded after single use) and the low efficiency of metal water-retaining plate splicing (requiring tools).

[0017] 2. This invention provides a vertical water-stop groove on the concave inner surface of the concave interface and a corresponding vertical water-stop ridge on the convex outer surface of the convex interface. During splicing, the ridge is embedded in the groove to form a tortuous sealing path along the vertical direction. At the same time, an elastic sealing strip is embedded between the arc mating surfaces to achieve flexible sealing compensation, effectively blocking the seepage channel at the horizontal splicing joint. By opening a horizontal water-stop groove on the joint surface of the upper protrusion and the lower mating concave platform of the water-retaining brick and embedding a water-swellable rubber sealing strip, the sealing strip automatically expands to fill the gap when water seeps into the joint between the upper and lower layers, solving the problem of water leakage between layers. By setting a flexible skirt made of thermoplastic elastomer material around the bottom periphery of the mating concave platform below the water-retaining brick, it adaptively flattens and fills the gaps in the uneven ground under its own weight and the added weight of water injection, forming a flexible sealing boundary that is closed circumferentially along the bottom of the brick. Based on this, water is injected into the hollow cavity through positioning columns with water injection holes. The weight of the water significantly increases the weight of individual bricks and the entire wall. Combined with the safety bracing arrangement guided by the anti-overturning stability check formula, it effectively resists overturning caused by water flow impact and lateral water pressure. The above-mentioned multi-layer sealing and weight-increasing stabilization measures solve the defects of existing water-blocking units that rely solely on simple stacking or single-seal, resulting in serious leakage and insufficient anti-overturning capacity under high water pressure.

[0018] 3. This invention designs the concave and convex interfaces as semi-cylindrical mating surfaces with the same arc radius, allowing adjacent bricks to rotate continuously relative to each other within a range of 0 degrees to ±45 degrees around a common vertical axis. This enables the direct splicing of straight or curved sections of retaining walls at any angle through the same set of interfaces without replacing any components on-site, eliminating the need for specialized corner modules. The flexible skirt, under the weight of the bricks and the added weight from water injection, adaptively fills gaps in uneven ground, creating an effective seal between the bottom of the retaining wall and the paved ground, eliminating the need for ground pretreatment or foundation pouring. The main body of the retaining bricks adopts a modular design, allowing for different combinations of length, width, and height to be selected according to the actual engineering scenario, adapting to high water pressure scenarios during flood control, narrow and long spaces in bridge drip channels, and temporary diversion scenarios in complex terrain. This invention, through the aforementioned integrated adjustable angle splicing structure, bottom adaptive flexible seal, and modular size combination, achieves flexible adaptation and low-cost rapid deployment to complex terrains such as sloping ground, winding river channels, and irregularly shaped construction areas. It solves the shortcomings of existing water-retaining facilities, such as poor adaptability to winding terrain, the need for additional pretreatment of uneven ground, and the high cost caused by the need for customized corner components. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of a modular and detachable water-retaining brick according to the present invention; Figure 2 This is an isometric schematic diagram of a modular, detachable water-retaining brick according to the present invention. Figure 3 This is an assembly diagram of a modular, detachable water-retaining brick according to the present invention. Figure 4 This is a BIM schematic diagram illustrating the engineering application of a modular, detachable water-retaining brick according to the present invention. In the diagram: 1. Main body of the water-retaining brick; 2. Positioning column with water injection hole; 3. Positioning column; 4. Boss on top of the water-retaining brick; 5. Concave interface; 6. Boss on top of the water-retaining brick; 7. Concave platform below the water-retaining brick. Detailed Implementation

[0020] Example 1: like Figures 1-4 As shown, a modular, detachable water-retaining brick includes a water-retaining brick body 1, which is molded from polypropylene; at least one positioning column 2 with a water injection hole, which is vertically fixed to the upper part of the water-retaining brick body 1 for injecting water into the water-retaining brick body 1 to increase its weight; a positioning column 3, which is located on the other side of the upper part of the water-retaining brick body 1 and is symmetrically distributed with the positioning column 2 with the water injection hole; a boss on the top of the water-retaining brick body 1; a recessed platform 7 at the bottom of the water-retaining brick body 1, the shape of which matches the boss on the top of the water-retaining brick body 1, for stacking and connecting multiple water-retaining bricks; a concave interface 5 and a convex interface 6, which are respectively provided on the two end faces of the water-retaining brick body 1 for forming an adjustable assembly structure when spliced ​​front and back.

[0021] Preferably, the concave interface 5 is a semi-cylindrical groove with an arc-shaped concave surface, the inner surface of which extends vertically, and its arc radius is... The thickness is 1.5 to 2.5 times the wall thickness of the main body 1 of the water-retaining brick; the convex interface 6 is a semi-cylindrical protrusion with an arc-shaped outer convex surface, the arc-shaped outer surface of the protrusion extends vertically, and its arc radius is the same as the arc radius of the groove. Equal; during splicing, the inner surface of the concave interface 5 and the outer surface of the convex interface 6 of two adjacent water-retaining bricks form a coaxial arc surface contact fit, and the two can rotate relative to each other around a common vertical axis, with a rotation angle range of [missing information]. to When the two are fully fitted together, the splicing structure is straight; when the two rotate relative to each other, an angle is formed between the longitudinal axes of the two bricks, and the angle is equal to the relative rotation angle.

[0022] Furthermore, the wall thickness of the main body 1 of the water-retaining brick According to the designed water-retaining height Confirmed, satisfied ,in This is the wall thickness coefficient, with a value ranging from 0.03 to 0.05.

[0023] Preferably, the positioning column 3 is a solid column structure; a positioning blind hole is provided on each side of the mating recess 7 below the water-retaining brick; when stacking, one positioning column 2 with water injection hole and one positioning column 3 located on the top sides of the lower brick are respectively inserted into the positioning blind holes on both sides of the mating recess 7 at the bottom of the upper brick to form a pin hole mating positioning, which restricts the horizontal relative displacement between the upper and lower bricks; the mating surface of the upper boss of the water-retaining brick and the lower mating recess 7 of the water-retaining brick is a trapezoidal structure.

[0024] Furthermore, the opening of the positioning blind hole faces downwards, its axis is perpendicular to the bottom plane of the lower mating recess, its cross-sectional shape is circular or rectangular, and its depth is [missing information]. to The cross-sectional shape of the positioning column 3 is consistent with the cross-sectional shape of the positioning blind hole, and the fitting clearance is no greater than [missing value]. .

[0025] Preferably, one or more vertical water-stop grooves are formed on the concave surface of the concave interface 5 along the vertical direction, and one or more vertical water-stop ridges are provided on the convex surface of the convex interface 6 at positions corresponding to the vertical water-stop grooves. The cross-sectional shape of the vertical water-stop ridges matches the vertical water-stop grooves. During splicing, the vertical water-stop ridges are embedded in the vertical water-stop grooves to form a tortuous sealing path along the vertical direction. An elastic sealing strip is also embedded in the vertical direction between the arc mating surfaces of the concave interface 5 and the convex interface 6 to fill the tiny gaps between the arc mating surfaces after splicing and compression.

[0026] Furthermore, the cross-section of each vertical water-stop groove is rectangular, and the groove depth is... to The width of the groove is to The height of the vertical water-stopping ridge is equal to the groove depth; the elastic sealing strip is made of EPDM rubber or silicone rubber, with a rectangular cross-section and a thickness of [missing information]. to .

[0027] Preferably, an upper transverse water-stop groove is formed along the length of the upper surface of the protrusion above the water-retaining brick, and a lower transverse water-stop groove is formed on the bottom inner surface of the recess 7 below the water-retaining brick at the position corresponding to the upper transverse water-stop groove; after the two water-retaining bricks are stacked, the upper transverse water-stop groove and the lower transverse water-stop groove are aligned to form a transverse sealing cavity, and a water-swellable rubber sealing strip is placed in the cavity; a flexible skirt extending downward is provided around the bottom periphery of the recess 7 below the water-retaining brick, and the flexible skirt is integrally formed with the water-retaining brick body 1 by two-color injection molding or secondary injection molding using thermoplastic elastomer material.

[0028] Furthermore, the cross-section of the water-swellable rubber sealing strip is circular, with a diameter slightly larger than the height of the transverse sealing cavity; when water seeps into the joint between the upper and lower layers, the water-swellable rubber sealing strip expands to its original volume. to The seam gap is filled and sealed by [a certain amount]. The downward extension height of the flexible skirt is [a certain amount]. to Thickness is to When the bottom water-retaining bricks are laid on the ground, the flexible skirt is flattened and deformed under the weight of the bricks and the subsequent weight increase from water injection, adaptively filling the gaps in the uneven ground, so that a flexible sealing boundary is formed between the bottom of the water-retaining bricks and the ground, which is closed circumferentially along the bottom of the bricks.

[0029] Preferably, the interior of the water-retaining brick body 1 is a hollow structure, and a water injection channel is vertically opened inside the positioning column 2 with water injection holes. A circular water passage hole is opened in the hollow cavity of the water-retaining brick body 1 at the installation position corresponding to the positioning column 2 with water injection holes. The lower end of the water injection channel is axially aligned with the circular water passage hole and sealed and connected, forming a complete water injection path from the water injection hole through the water injection channel and the circular water passage hole to the hollow cavity. An elastic inner lining layer is fixedly attached to the inner wall of the hollow cavity. The elastic inner lining layer is made of closed-cell foamed polyethylene or foamed polyurethane. When the water in the cavity freezes and expands in volume, the closed-cell cells of the elastic inner lining layer are compressed, providing volume compensation space for the expansion of the ice.

[0030] Furthermore, the hollow cavity is a closed rectangular cavity formed by six walls: a front wall, a rear wall, a left wall, a right wall, a top wall, and a bottom wall. The wall thickness of each wall is uniform and not less than [amount missing]. The hollow cavity, except for its connection to the water injection channel via the circular water passage hole, has completely sealed walls on all other surfaces. The upper boss, lower recess 7, concave interface 5, and convex interface 6 of the water-retaining brick are all formed on the outer wall surface of the hollow cavity, isolated from the hollow cavity by the wall thickness, ensuring that the structural forming of each interface does not compromise the sealed integrity of the hollow cavity. The diameter of the circular water passage hole is equal to the diameter of the water injection channel. The bottom of the positioning column 2 with the water injection hole has an annular connecting seat, which is fixedly connected to the upper surface of the water-retaining brick body 1 by hot-melt welding or integral compression molding. The thickness of the elastic inner lining layer... According to the internal volume of the hollow cavity Sure, ,and Not less than For environments where the minimum expected operating temperature is below [temperature value missing] In application scenarios, a certain percentage by mass is added to the water during injection. to Calcium chloride or sodium chloride antifreeze lowers the freezing point of the water in the cavity to the following.

[0031] Preferably, multiple modular detachable water-retaining bricks are stacked vertically and spliced ​​front to back to form a continuous water-retaining wall. The bending angle of the continuous water-retaining wall is adjusted by the docking method of the concave interface 5 and the convex interface 6. The maximum number of stacked layers when the water-retaining bricks are stacked vertically is: ; in The required total height of the water barrier. The height of a single water-retaining brick; the number of stacked layers must meet the overturning stability requirements. ; in This is the total self-weight of the wall structure after water injection. The thickness of the main body 1 of the water-retaining brick along the water-retaining direction is [missing information]. The total hydrostatic pressure acting on the water-facing surface of the wall. The water depth in front of the wall. For overturning safety factor and ;when If the anti-overturning stability condition is not met, diagonal bracing is added to the backwater side of the wall.

[0032] Furthermore, , This represents the actual number of stacked layers. The total mass of a single water-retaining brick after it has been filled with water. Take the acceleration due to gravity ; , Take the density of water as , This is the total length of the continuous retaining wall. The diagonal bracing is located at intervals on the back side of the wall. to One diagonal brace is installed every meter, with the angle between the diagonal brace and the ground being [value missing]. to The top of the diagonal brace is engaged with the outer wall of the back surface of the water-retaining brick via a U-shaped groove. A rubber pad is attached to the inner wall of the U-shaped groove. The bottom of the diagonal brace is equipped with a pointed metal foot plate, which is driven into the ground to a depth of not less than [amount missing]. .

[0033] Preferably, the top of the positioning column 2 with water injection hole is provided with a sealing cover; the sealing cover is made of the same polypropylene material as the water-retaining brick body 1, including a top disc and a cylindrical sealing plug extending downward from the center of the lower surface of the top disc; the cylindrical sealing plug and the water injection hole achieve a primary seal through an interference fit; the lower surface edge of the top disc is provided with a downwardly protruding annular water-retaining edge, which is tightly bound to the outer circumferential surface of the top outer wall of the positioning column 2 with water injection hole to form a secondary seal.

[0034] Furthermore, the outer diameter of the cylindrical sealing plug is larger than the inner diameter of the water injection hole. to The inner diameter of the annular water-retaining eaves matches the outer diameter of the top outer wall of the positioning column 2 with water injection holes.

[0035] Example 2: A method for using a modular, detachable water-retaining brick includes the following steps: Multiple modular and detachable water-retaining bricks are arranged according to the terrain requirements, and are spliced ​​together by the concave interface 5 and the convex interface 6 to form a straight or curved structure; Multiple modular and detachable water-retaining bricks are vertically stacked by the upper protrusion of the water-retaining brick and the lower recess 7 of the water-retaining brick to increase the water-retaining height. Water is injected into the body 1 of the water-retaining brick through the positioning column 2 with water injection holes to increase overall stability; after use, the water is drained and the modular detachable water-retaining brick is disassembled for recycling and reuse.

[0036] Furthermore, the water source is a tap at the construction site or the outlet pipe of a mobile water pump; the water is injected under the pressure of the tap water network or the pump head pressure; the drainage time is not less than 30 seconds to ensure that the water in the cavity is completely drained; after drainage, wipe the area around the water injection hole and the sealing cover and its mating surface with a dry cloth to prevent mud and sand residue from affecting the sealing effect next time.

[0037] Preferably, during water injection, the sealing cap is unscrewed, the water injection pipe is inserted into the water injection hole and connected to the water source, and water flows into the hollow cavity of the water-retaining brick body 1 through the water injection channel. Water injection is stopped when water overflows from the water injection hole, the water injection pipe is pulled out, and the water injection hole is resealed. During drainage, the sealing cap is unscrewed, and the water-retaining brick body 1 is flipped over. The accumulated water flows out by gravity; for large water-retaining bricks that cannot be turned over, the water is guided out by the siphon effect by inserting a flexible drainage pipe into the water injection hole.

[0038] Furthermore, after use and drainage disassembly, each of the water-retaining brick bodies 1 is rinsed with clean water to remove surface mud and dirt, and then placed in a ventilated area to air dry naturally or dried with compressed air to remove residual water stains from the water injection channels and the inner walls of the hollow cavities. After drying, a bag of desiccant (silica gel or montmorillonite bagged desiccant) is placed into each hollow cavity through the water injection hole, and then the sealing cap is tightened to seal the water injection hole. During storage, the water-retaining brick bodies 1 are stacked flat, with a stacking height not exceeding 10 layers, and spacers are placed between each layer to maintain ventilation. The storage environment is indoors or in a sheltered outdoor area, with a storage temperature range of [temperature range missing]. to .

Claims

1. A modular, detachable water-retaining brick, characterized in that, The system includes a main body for retaining water, which is molded from polypropylene; at least one positioning column with a water injection hole, which is vertically fixed to the upper part of the main body for injecting water into the main body to increase its weight; a positioning column located on the other side of the upper part of the main body, symmetrically distributed with the positioning column with the water injection hole; a boss on top of the main body; a recessed platform at the bottom of the main body, the shape of which matches the boss on top, for stacking multiple retaining bricks; and concave and convex interfaces located on the two end faces of the main body for forming an adjustable assembly structure when spliced ​​together.

2. The modular, detachable water-retaining brick according to claim 1, characterized in that, The concave interface is a semi-cylindrical groove with an arc-shaped concave surface. The arc-shaped inner surface of the groove extends vertically, and its arc radius is... The thickness is 1.5-2.5 times the wall thickness of the main body of the water-retaining brick; the convex interface is a semi-cylindrical protrusion with an arc-shaped outer convex surface, the arc-shaped outer surface of the protrusion extends vertically, and its arc radius is the same as the arc radius of the groove. Equal; during splicing, the inner surface of the concave interface arc of two adjacent water-retaining bricks and the outer surface of the convex interface arc form a coaxial arc surface contact fit, and the two can rotate relative to each other around a common vertical axis, with a rotation angle range of [missing information]. to When the two are fully fitted together, the splicing structure is straight; when the two rotate relative to each other, an angle is formed between the longitudinal axes of the two bricks, and the angle is equal to the relative rotation angle.

3. The modular, detachable water-retaining brick according to claim 1, characterized in that, The positioning column is a solid column structure; a positioning blind hole is provided on each side of the recessed platform below the water-retaining brick; when stacking the upper and lower bricks, one of the positioning columns with water injection holes located on the top sides of the lower brick and another positioning column are respectively inserted into the positioning blind holes on both sides of the recessed platform below the bottom of the upper brick to form a pin-hole positioning, which restricts the horizontal relative displacement between the upper and lower bricks; the mating surface between the upper boss of the water-retaining brick and the lower recessed platform of the water-retaining brick is a trapezoidal structure.

4. The modular, detachable water-retaining brick according to claim 1, characterized in that, One or more vertical water-stop grooves are formed on the concave inner surface of the concave interface along the vertical direction. One or more vertical water-stop ridges are provided on the convex outer surface of the convex interface at positions corresponding to the vertical water-stop grooves. The cross-sectional shape of the vertical water-stop ridges matches the vertical water-stop grooves. During splicing, the vertical water-stop ridges are embedded in the vertical water-stop grooves, forming a tortuous sealing path along the vertical direction. An elastic sealing strip is also embedded in the vertical direction between the arc mating surfaces of the concave and convex interfaces, filling the tiny gaps between the arc mating surfaces after splicing and compression.

5. The modular, detachable water-retaining brick according to claim 1, characterized in that, An upper transverse water-stop groove is formed along the length of the upper surface of the protrusion above the water-retaining brick. A lower transverse water-stop groove is formed on the bottom inner surface of the recessed platform below the water-retaining brick at the position corresponding to the upper transverse water-stop groove. After the two water-retaining bricks are stacked, the upper transverse water-stop groove and the lower transverse water-stop groove are aligned to form a transverse sealing cavity. A water-swellable rubber sealing strip is placed inside the cavity. A flexible skirt extending downward is provided around the bottom periphery of the recessed platform below the water-retaining brick. The flexible skirt is integrally formed with the water-retaining brick body by two-color injection molding or secondary injection molding using thermoplastic elastomer material.

6. The modular, detachable water-retaining brick according to claim 1, characterized in that, The interior of the water-retaining brick body is hollow, and a water injection channel is vertically opened inside the positioning column with water injection holes. A circular water passage hole is opened in the hollow cavity of the water-retaining brick body at the installation position corresponding to the positioning column with water injection holes. The lower end of the water injection channel is axially aligned with the circular water passage hole and sealed and connected, forming a complete water injection path from the water injection hole through the water injection channel and the circular water passage hole to the hollow cavity. An elastic inner lining layer is fixedly attached to the inner wall of the hollow cavity. The elastic inner lining layer is made of closed-cell foamed polyethylene or foamed polyurethane. When the water in the cavity freezes and expands in volume, the closed-cell cells of the elastic inner lining layer are compressed, providing volume compensation space for the expansion of ice.

7. The modular, detachable water-retaining brick according to claim 1, characterized in that, Multiple modular, detachable water-retaining bricks are stacked vertically and spliced ​​front to back to form a continuous water-retaining wall. The bending angle of the continuous water-retaining wall is adjusted by the docking method of the concave and convex interfaces. The maximum number of stacked layers when the water-retaining bricks are stacked vertically is: ； in The required total height of the water barrier. The height of a single water-retaining brick; The number of stacked layers must meet the overturning stability condition: ； in This is the total self-weight of the wall structure after water injection. The thickness of the main body of the water-retaining brick along the water-retaining direction. The total hydrostatic pressure acting on the water-facing surface of the wall. The water depth in front of the wall. For overturning safety factor and ;when If the anti-overturning stability condition is not met, diagonal bracing is added to the backwater side of the wall.

8. A modular, detachable water-retaining brick according to claim 1, characterized in that, The top of the positioning column with water injection hole is equipped with a sealing cover; the sealing cover is made of the same polypropylene material as the main body of the water-retaining brick, including a top disc and a cylindrical sealing plug extending downward from the center of the lower surface of the top disc; the cylindrical sealing plug and the water injection hole achieve a primary seal through an interference fit; the lower surface edge of the top disc is provided with a downwardly protruding annular water-retaining edge, which is tightly bound to the outer circumferential surface of the top outer wall of the positioning column with water injection hole to form a secondary seal.

9. A method of using a modular, detachable water-retaining brick according to any one of claims 1-8, characterized in that, Includes the following steps: Multiple modular and detachable water-retaining bricks are arranged according to terrain requirements, and are spliced ​​together with the concave interface and the convex interface to form a straight or curved structure; Multiple modular and detachable water-retaining bricks are vertically stacked by connecting the upper protrusion of the water-retaining brick with the lower concave platform of the water-retaining brick to increase the water-retaining height. Water is injected into the interior of the water-retaining brick body through the positioning column with water injection holes to increase overall stability; After use, drain the water and disassemble the modular removable water-retaining bricks for recycling and reuse.

10. The method of using a modular, detachable water-retaining brick according to claim 9, characterized in that, When filling with water, unscrew the sealing cap, insert the water inlet pipe into the water inlet and connect it to the water source. Water flows into the hollow cavity of the water-retaining brick body through the water inlet channel. Stop filling when water overflows from the water inlet, pull out the water inlet pipe and reseal the water inlet. When draining water, unscrew the sealing cap and flip the water-retaining brick body over. The accumulated water flows out by gravity; for large water-retaining bricks that cannot be turned over, the water is guided out by the siphon effect by inserting a flexible drainage pipe into the water injection hole.

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