An anti-seepage treatment device for preventing backfill loss

Abstract

This invention discloses a seepage prevention device to prevent the loss of backfill material, specifically relating to the field of seepage prevention engineering technology. The invention involves setting up an intercepting net that slides along a guide rail. A sliding seat slides on the guide rail and pulls the intercepting net towards the corresponding side strip, locking it in place. A handle drives in the opposite direction to tighten the intercepting net. Then, rotating the adjusting screw causes it to rotate with the adjusting seat, resulting in the rotating seat rotating on its own axis. During rotation, the adjusting screw moves downwards, pushing the rotating plate downwards and causing it to rotate around the hinge point of the upper cavity of the adjusting seat. This causes the limiting block below the rotating plate to move closer to the gear until it engages with the gear, forming a mechanical lock. This, in turn, restricts the net-collecting roller, ensuring the intercepting net is in a predetermined stable posture. This provides continuous and reliable coverage and protection for the backfill material below, effectively constraining the backfill material and preventing it from loosening under the impact of water flow.

Description

Technical Field

[0001] This invention relates to the field of anti-seepage engineering technology, specifically to an anti-seepage treatment device that prevents the loss of backfill material. Background Technology

[0002] In municipal engineering, road engineering, trench backfilling, underground structure construction, and slope protection projects, backfilling is often required above the foundation to restore the surface structure or form a stable bearing layer. Backfill material is typically sand, gravel, graded soil, or recycled fill, which has many internal pores. Under the influence of rainfall, groundwater fluctuations, or external water flow, water can easily seep along the contact interface between the backfill material and the foundation or through the pores within the backfill material, carrying away fine particles and causing backfill material loss. In existing projects, to prevent backfill material from being washed away by seepage, impermeable materials are usually laid on the foundation surface before backfilling, positioned below the backfill material and above the foundation to form a seepage barrier. Common seepage prevention methods include laying geomembranes, geotextiles, or composite impermeable layers.

[0003] Existing seepage prevention solutions, such as traditional geotextiles and geomembranes, are laid on the surface of the backfill material. They rely solely on frictional constraints and cannot form rigid limits. Under the scouring of water flow, they are prone to relative slippage with the backfill layer, resulting in poor constraint on the backfill material and easy leakage. Summary of the Invention

[0004] The purpose of this invention is to provide a seepage prevention treatment device to prevent the loss of backfill material, so as to solve the problems mentioned in the background art.

[0005] The main technical problem solved by this invention is: Traditional flexible materials such as geotextiles and geomembranes are laid on the surface of the backfill. Under the scouring of water flow, they are prone to relative slippage with the backfill layer, resulting in poor restraint effect on the backfill and easy leakage of the backfill.

[0006] This invention can be achieved through the following technical solutions: A seepage prevention device for preventing backfill material loss includes a construction base set on a river slope, an seepage prevention component installed inside the construction base, a grid unit attached to the upper part of the seepage prevention component, and a sealing and reinforcement unit attached to the outside of the grid unit and the seepage prevention component. The grid unit includes a grid frame, and several fixed plates are fixedly arranged inside the grid frame. Both ends of the top surface of the grid frame are provided with edge strips. Each of the several fixed plates has a movable plate that slides along the inner wall of the grid frame. Multiple movable plates slide simultaneously. The top surface of the grid frame is provided with guide rails on both edges and between the adjustment seat and the edge strip, and each guide rail is slidably connected to a sliding seat on the outside; The upper cavity of the adjusting seat is equipped with two take-up rollers that rotate to wind the interception net. The edge of the interception net is fixed to the corresponding sliding seat. The two take-up rollers are connected by meshing gears, and the end of one take-up roller is connected to an upper handle. An adjusting screw is threaded onto the upper surface of the adjusting seat, and the end of the adjusting screw extends into the cavity at the top of the adjusting seat. A rotating plate is rotatably mounted in the cavity of the upper part of the adjusting seat. A limiting block for limiting the gear on the take-up roller is installed on the lower surface of the rotating plate, and a rotating seat is hinged to the upper surface of the rotating plate. The rotating seat is rotatably connected to the end of the adjusting screw.

[0007] A further technical improvement of the present invention is that: an adjustment seat is installed above the middle part of the grid frame, a lead screw is provided in the cavity of the lower part of the adjustment seat, and each lead screw has a threaded part with progressively increasing pitch from the edge to the middle part, and each threaded part is threadedly connected to an adjustment block, and the lower end face of each adjustment block is fixed to the corresponding moving piece. A lower handle connected to the lead screw is installed on one end face of the adjusting seat.

[0008] A further technical improvement of the present invention is that each edge strip is provided with a locking groove in the sliding direction toward the sliding seat; The side of the sliding seat is equipped with a locking block that works in conjunction with the locking groove; The upper surface of the edge strip is provided with a locking hole that communicates with the locking groove and is vertically collinear with the through hole on the card block.

[0009] A further technical improvement of the present invention is that: the seepage prevention component includes an outer layer plate for dense seepage prevention, an inner layer plate is attached to the lower surface of the outer layer plate, the surface of the inner layer plate is provided with a plurality of flow guiding holes, and a buffer cavity is formed between the inner layer plate and the outer layer plate.

[0010] A further technical improvement of the present invention is that: both the outer layer plate and the inner layer plate are provided with through holes, and the lower end of one of the through holes is provided with a blocking groove facing inward; The lower surface of the grid frame is provided with an insertion block, the bottom outer side of the insertion block is inclined inward, and the insertion block is slidably inserted into the insertion hole.

[0011] A further technical improvement of the present invention is that: the side of the insert block is provided with a limiting slide cavity, a spring is installed inside the limiting slide cavity, and the end of the spring is fixed with a protrusion that slides along the limiting slide cavity. The lower surface of the protrusion is arc-shaped, and the upper surface of the protrusion is engaged with the top of the inner cavity of the blocking groove.

[0012] A further technical improvement of the present invention is that: the sealing and reinforcing unit includes two parallel side blocks and two end blocks, each end block having an embedded groove on its edge, and the end blocks being perpendicular to the side blocks; The inner wall edge of the edge block is provided with an inwardly protruding mating part that mates with the embedded groove.

[0013] A further technical improvement of the present invention is that: each side block and end block has a base on the outer side of its bottom surface, and the base has bolt holes; Each edge block, end block, and base has an elastic sealing gasket that fits tightly against the bottom surface of the inner cavity of the construction substrate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up an interception net that slides along the guide rail, the sliding seat slides on the guide rail and pulls the interception net towards the corresponding side strip, locking it with the side strip. The upper handle drives in the opposite direction to tighten the interception net. At this time, the adjusting screw is rotated, and the adjusting screw and the adjusting seat thread rotate, causing the rotating seat to rotate. During the rotation, the adjusting screw moves downward and pushes the rotating plate to rotate downward. That is, the rotating plate rotates around the hinge point of the upper cavity of the adjusting seat, bringing the limiting block below the rotating plate closer to the gear until it engages with the gear, forming a mechanical lock. This limits the net-collecting roller, preventing it from rotating unexpectedly under external impact (such as water flow or wind force), ensuring that the interception net is in a predetermined stable posture, thus providing continuous and reliable coverage and protection for the backfill material below. The interception net effectively constrains the backfill material, preventing the interception net from loosening under the impact of water flow. 2. The grid frame and anti-seepage components are connected by first plugging and then snapping to achieve rapid installation. The gaps inside the grid frame are adjustable. The impact of external water flow is weakened by the grid units and interception net. The seepage water reaches the dense outer layer plate, preventing water from directly entering the slope. The seepage water (internal water pressure) in the joints or inside the slope reaches the buffer cavity and is discharged through the guide holes of the inner layer plate along the pre-set drainage pipes in the construction substrate. This avoids the accumulation of sediment water inside the slope, which would cause the hydrostatic pressure to rise, and also prevents water from hollowing out the filler from weak points. 3. By setting up a sealing and reinforcement unit, two side blocks and two end blocks are assembled around the grid unit and the seepage prevention component to form a complete outer frame. Utilizing the weight of the frame itself and the elasticity of the elastic sealing gasket, the bottom surface of the outer frame forms an initial tight fit with the inner cavity of the construction substrate (or the foundation surface), establishing the first seepage prevention sealing line. Anchor bolts or anchor rods are used to firmly anchor the entire sealing and reinforcement unit to the construction substrate. The process of tightening the bolts will strongly compress the elastic sealing gasket, causing it to deform more, tightly filling the micro-unevenness and gaps between the frame and the foundation, forming a durable, reliable, and seepage-resistant mechanical seal. Attached Figure Description

[0015] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the installation structure of the insert block and the anti-seepage component of the present invention; Figure 4 This is a schematic diagram of the internal structure of the grid frame of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the sealing and reinforcement unit of the present invention; Figure 6 This is a schematic diagram of the installation structure of the rotating plate and the adjusting screw of the present invention.

[0017] In the diagram: 1. Construction substrate; 2. Grating frame; 3. Waterproofing component; 4. Sealing and reinforcement unit; 5. Edge strip; 6. Locking groove; 7. Adjusting seat; 8. Insert block; 9. Protrusion; 10. Insertion hole; 11. Outer plate; 12. Inner plate; 13. Spring; 14. Limiting slide cavity; 15. Barrier groove; 16. Guide rail; 17. Lead screw; 18. Lower handle; 19. Adjusting block; 20. Moving piece; 21. Fixing piece; 22. Edge block; 23. Connecting part; 24. Elastic sealing gasket; 25. Base; 26. Sliding seat; 27. Net taking roller; 28. Adjusting screw; 29. ​​Rotating plate; 30. Limiting block; 31. Rotating seat. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0019] Please see Figures 1-6 As shown, the present invention provides a seepage prevention treatment device to prevent backfill material loss, including a construction base 1 set on a river slope, a seepage prevention component 3 installed inside the construction base 1, a grid unit attached to the upper part of the seepage prevention component 3, and a sealing and reinforcement unit 4 attached to the outside of the grid unit and the seepage prevention component 3. The grid unit includes a grid frame 2, and a number of fixing pieces 21 are fixedly provided inside the grid frame 2. Both ends of the top surface of the grid frame 2 are provided with edge strips 5. Each of the fixing pieces 21 has a movable piece 20 that slides along the inner wall of the grid frame 2. Multiple movable pieces 20 slide simultaneously. The top surface of the grid frame 2 is provided with guide rails 16 on both edges and between the adjustment seat 7 and the side strip 5. Each guide rail 16 is slidably connected to a sliding seat 26. The upper cavity of the adjusting seat 7 is equipped with two take-up rollers 27 that rotate to wind the interception net. The edge of the interception net is fixed to the corresponding sliding seat 26. The two take-up rollers 27 are connected by meshing gears. The end of one take-up roller 27 is connected to an upper handle. An adjusting screw 28 is threaded onto the upper surface of the adjusting seat 7, and the end of the adjusting screw 28 extends into the cavity in the upper part of the adjusting seat 7. A rotating plate 29 is rotatably mounted in the cavity of the upper part of the adjusting seat 7. A limiting block 30 for limiting the gear on the take-up roller 27 is mounted on the lower surface of the rotating plate 29, and a rotating seat 31 is hinged to the upper surface of the rotating plate 29. The rotating seat 31 is rotatably connected to the end of the adjusting screw 28.

[0020] Construction base 1 is the basic concrete base of the river slope, providing stable support.

[0021] The size and specifications of the grid unit and the seepage prevention component 3 are consistent. After connecting the grid unit and the seepage prevention component 3, the sealing and reinforcement unit 4 is then attached to the outside of the grid unit and the seepage prevention component 3. Then, the sealing and reinforcement unit 4 is fixed to the construction substrate 1 with bolts. Then, the diameter of the backfill material is used to adjust the limiting sliding of multiple moving plates 20 on the fixed plate 21 in real time. When the multiple moving plates 20 move, the distance they move increases in sequence, thereby changing the gap between the fixed plate 21 and the moving plates 20 in the grid unit to accommodate the backfill material entering the gap. After the backfill material enters the gap, the upper handle drives one net-collecting roller 27 to rotate, while another net-collecting roller 27 is driven by a gear to rotate in the opposite direction. At this time, the sliding seat 26 slides on the guide rail 16 and pulls the intercepting net to move towards the corresponding side strip 5 and locks with the side strip 5. At this point, reverse the drive of the upper handle to tighten the interception net. Then, rotate the adjusting screw 28. The adjusting screw 28 rotates with the adjusting seat 7, causing the rotating seat 31 to rotate. During the rotation, the adjusting screw 28 moves downward and pushes the rotating plate 29 to rotate downward. That is, the rotating plate 29 rotates around the hinge point of the upper cavity of the adjusting seat 7, causing the limiting block 30 below the rotating plate 29 to move closer to the gear until it engages with the gear, forming a mechanical lock. This restricts the net-collecting roller 27, preventing it from rotating unexpectedly under external impacts (such as water flow or wind), ensuring that the interception net is in a predetermined stable posture. This provides continuous and reliable coverage and protection for the backfill material below. By effectively constraining the backfill material through the interception net, the cost of repeated filling due to loss is reduced, and the interception net is prevented from loosening under the impact of water flow, ensuring long-term stability.

[0022] See Figure 4As shown, an adjusting seat 7 is installed above the middle part of the grid frame 2. A lead screw 17 is provided in the cavity at the lower part of the adjusting seat 7. Each lead screw 17 has a threaded part with progressively increasing pitch from its edge to its middle. Each threaded part is threadedly connected to an adjusting block 19. The lower end face of each adjusting block 19 is fixed to the corresponding moving piece 20. A lower handle 18 connected to the lead screw 17 is installed on one end face of the adjusting seat 7.

[0023] Because the pitch of each section of the lead screw 17 is different, the larger the pitch of the threaded part, the greater the distance that the adjusting block 19 on it moves axially when the lead screw 17 rotates once. When the lower handle 18 is turned, all the adjusting blocks 19 move at the same time, but the speed and distance of movement are different. Each adjusting block 19 drives the fixed moving piece 20 below it to slide synchronously but not at equal distances on the inner wall of the grid frame 2. This differential sliding causes the size of the opening on the grid frame 2 (i.e. the gap between the fixed piece 21 and the moving piece 20) to change regularly. When changing the type of backfill material (such as from coarse crushed stone to fine pebbles), workers can complete the adaptation adjustment of all grid apertures within seconds, greatly improving the flexibility of construction and subsequent maintenance.

[0024] See Figure 1 and Figure 6 As shown, each edge strip 5 is provided with a locking groove 6 in the sliding direction of the sliding seat 26; The side of the sliding base 26 is equipped with a locking block that works in conjunction with the locking groove 6; The upper surface of the edge strip 5 is provided with a locking hole that communicates with the locking groove 6 and is vertically collinear with the through hole on the card block.

[0025] When it is necessary to adjust the coverage width of the interception net, the operator pushes the sliding seat 26 so that it slides along the direction of the locking groove 6 on the guide rail 16 until the locking block enters the locking groove 6. The bolt is then turned in the locking hole and vertically inserted into the through hole of the locking block to complete the locking of one end of the interception net.

[0026] See Figure 3 As shown, the seepage prevention component 3 includes an outer layer plate 11 for dense seepage prevention, an inner layer plate 12 is attached to the lower surface of the outer layer plate 11, the surface of the inner layer plate 12 is provided with a plurality of flow guiding holes, and a buffer cavity is formed between the inner layer plate 12 and the outer layer plate 11. Both the outer layer plate 11 and the inner layer plate 12 have through holes 10 on their surfaces, and one of the holes 10 has a groove 15 facing inward at its lower end. The lower surface of the grid frame 2 is provided with a plug 8, the bottom outer side of the plug 8 is inclined inward, and the plug 8 is slidably inserted into the plug hole 10; The side of the insert 8 is provided with a limiting slide cavity 14. A spring 13 is installed inside the limiting slide cavity 14. The end of the spring 13 is fixed with a protrusion 9 that slides along the limiting slide cavity 14. The lower surface of the protrusion 9 is arc-shaped, and the upper surface of the protrusion 9 is engaged with the top of the inner cavity of the blocking groove 15.

[0027] When installing the grid frame 2 and the seepage prevention component 3, the insert block 8 is aligned with the insertion hole 10 on the outer layer plate 11 and the inner layer plate 12 that are connected together. Since the bottom of the insert block 8 is inclined inward, it is not easy to cause interference during installation. When the insert block 8 enters the insertion hole 10, the protrusion 9 therein contacts the inner wall of the insertion hole 10 and is squeezed. The protrusion 9 slides in the limiting slide cavity 14 and elastically squeezes the spring 13. When the protrusion 9 reaches the position of the blocking groove 15, the restriction on the protrusion 9 is released, the spring 13 restores its elastic deformation, and the protrusion 9 is inserted into the blocking groove 15, thereby completing the rapid installation of the seepage prevention component 3 and the grid frame 2.

[0028] The impact of external water flow is weakened by the grid unit and the interception net. The seepage water reaches the dense outer plate 11, which prevents water from directly entering the slope. The seepage water (internal water pressure) existing in the joints or inside the slope reaches the buffer cavity and is safely and systematically guided to the designated drainage point (such as the slope foot collection well) through the guide holes of the inner plate 12 along the pre-set drainage pipe in the construction base 1. This avoids the accumulation of sediment water inside the slope, which would cause the hydrostatic pressure to rise. It actively removes water that may accumulate behind the protective structure, eliminates the hydrostatic pressure that would cause structural instability, and prevents water from hollowing out the filler from weak points.

[0029] See Figure 5 As shown, the sealing and reinforcement unit 4 includes two parallel side blocks 22 and two end blocks. Each end block has an embedded groove on its edge, and the end block is perpendicular to the side block 22. The inner wall edge of the edge block 22 is provided with an inwardly protruding mating part 23 that mates with the embedded groove; Each edge block 22 and end block has a base 25 on the outer side of its bottom surface, and bolt holes are provided on the base 25; Each edge block 22, end block, and base 25 has an elastic sealing gasket 24 that fits tightly against the bottom surface of the inner cavity of the construction substrate 1.

[0030] The two side blocks 22 and the two end blocks are moved to the construction base 1 and surrounded around the installed grid unit and the seepage prevention component 3. By using the insertion of the docking part 23 and the embedded groove, a complete outer frame is quickly assembled.

[0031] By utilizing the weight of the frame itself and the elasticity of the elastic sealing gasket 24, the bottom surface of the outer frame and the inner cavity (or foundation surface) of the construction substrate 1 are initially tightly fitted, establishing the first anti-seepage sealing line. The entire sealing reinforcement unit 4 is firmly anchored to the construction substrate 1 using anchor bolts or anchor rods. The process of tightening the bolts will strongly compress the elastic sealing gasket 24, causing it to deform more, tightly filling the micro-unevenness and gaps between the frame and the foundation, forming a durable, reliable, and seepage-resistant mechanical seal.

[0032] In use, this invention involves setting up an intercepting net that slides along the guide rail 16. The sliding seat 26 slides on the guide rail 16 and pulls the intercepting net toward the corresponding side strip 5, locking it with the side strip 5. The upper handle drives in the opposite direction to tighten the intercepting net. At this time, the adjusting screw 28 is rotated, causing the adjusting screw 28 to rotate with the adjusting seat 7 and causing the rotating seat 31 to rotate. During the rotation, the adjusting screw 28 moves downward and pushes the rotating plate 29 to rotate downward. That is, the rotating plate 29 rotates around the hinge point of the upper cavity of the adjusting seat 7, causing the limiting block 30 below the rotating plate 29 to move closer to the gear until it engages with the gear, forming a mechanical lock. This restricts the net-collecting roller 27, preventing it from rotating unexpectedly under external impact (such as water flow or wind force), ensuring that the intercepting net is in a predetermined stable posture. This provides continuous and reliable coverage and protection for the backfill material below. The intercepting net effectively constrains the backfill material, preventing the intercepting net from loosening under the impact of water flow. The grid frame 2 and the anti-seepage component 3 are connected by first plugging and then snapping to achieve rapid installation. The impact of external water flow is weakened by the grid unit and the interception net. The seepage water reaches the dense outer plate 11, which prevents water from directly entering the slope. The seepage water (internal water pressure) in the joints or inside the slope reaches the buffer cavity and is drained through the guide hole of the inner plate 12 along the pre-set drainage pipe in the construction base 1. This avoids the accumulation of sediment water inside the slope, which would cause the hydrostatic pressure to rise, and also prevents water from hollowing out the filler from weak points. By setting up the sealing reinforcement unit 4, the two side blocks 22 and the two end blocks are surrounded around the grid unit and the seepage prevention component 3 to form a complete outer frame. Utilizing the weight of the frame itself and the elasticity of the elastic sealing gasket 24, the bottom surface of the outer frame forms an initial tight fit with the inner cavity (or foundation surface) of the construction substrate 1, establishing the first seepage prevention sealing line. Anchor bolts or anchor rods are used to firmly anchor the entire sealing reinforcement unit 4 to the construction substrate 1. The process of tightening the bolts will strongly compress the elastic sealing gasket 24, causing it to undergo greater deformation, tightly filling the micro-unevenness and gaps between the frame and the foundation, forming a durable, reliable, and seepage-resistant mechanical seal.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A seepage prevention device for preventing the loss of backfill material, characterized in that: The construction base (1) is located on the river slope. An anti-seepage component (3) is installed inside the construction base (1). A grid unit is attached to the upper part of the anti-seepage component (3). A sealing and reinforcement unit (4) is attached to the outside of the grid unit and the anti-seepage component (3). The grid unit includes a grid frame (2), and a number of fixed pieces (21) are fixed inside the grid frame (2). Both ends of the top surface of the grid frame (2) are provided with side strips (5). Each of the fixed pieces (21) has a movable piece (20) that slides along the inner wall of the grid frame (2). Multiple movable pieces (20) slide simultaneously. The two edges of the top surface of the grid frame (2) and between the adjustment seat (7) and the side strip (5) are provided with guide rails (16), and each guide rail (16) is slidably connected to a sliding seat (26). The upper cavity of the adjusting seat (7) is provided with two take-up rollers (27) that wind the interception net. The edge end of the interception net is fixed to the corresponding sliding seat (26). The two take-up rollers (27) are connected by meshing gears. The end of one take-up roller (27) is connected to an upper handle. The upper surface of the adjusting seat (7) is threaded with an adjusting screw (28), and the end of the adjusting screw (28) extends into the cavity in the upper part of the adjusting seat (7) and is connected with a limiting block (30). A rotating plate (29) is rotatably installed in the cavity of the upper part of the adjusting seat (7). A limiting block (30) for limiting the gear on the take-up roller (27) is installed on the lower surface of the rotating plate (29). A rotating seat (31) is hinged to the upper surface of the rotating plate (29). The rotating seat (31) is rotatably connected to the end of the adjusting screw (28).

2. The seepage prevention treatment device for preventing backfill material loss according to claim 1, characterized in that, An adjusting seat (7) is installed above the middle part of the grid frame (2). A lead screw (17) is provided in the cavity at the lower part of the adjusting seat (7). Each lead screw (17) has a threaded part with progressively increasing pitch from its edge to its middle. Each threaded part is threadedly connected to an adjusting block (19). The lower end face of each adjusting block (19) is fixed to the corresponding moving piece (20). The adjusting seat (7) has a lower handle (18) connected to the lead screw (17) installed on one end face.

3. The seepage prevention treatment device for preventing backfill material loss according to claim 1, characterized in that, Each edge strip (5) is provided with a locking groove (6) in the sliding direction toward the sliding seat (26); The sliding seat (26) is equipped with a locking block on its side that works in conjunction with the locking groove (6); The upper surface of the edge strip (5) is provided with a locking hole that communicates with the locking groove (6) and is vertically collinear with the through hole on the card block.

4. The seepage prevention treatment device for preventing backfill material loss according to claim 1, characterized in that, The seepage-proof component (3) includes an outer layer plate (11) for dense seepage prevention, an inner layer plate (12) is attached to the lower surface of the outer layer plate (11), the surface of the inner layer plate (12) is provided with a plurality of flow guide holes, and a buffer cavity is formed between the inner layer plate (12) and the outer layer plate (11).

5. The seepage prevention treatment device for preventing backfill material loss according to claim 4, characterized in that, Both the outer layer plate (11) and the inner layer plate (12) have through holes (10) on their surfaces, and one of the holes (10) has a groove (15) facing inward at its lower end. The lower surface of the grid frame (2) is provided with a plug (8), the bottom outer side of the plug (8) is inclined inward, and the plug (8) is slidably inserted into the socket (10).

6. The seepage prevention treatment device for preventing backfill material loss according to claim 5, characterized in that, The side of the insert (8) is provided with a limiting slide cavity (14), and a spring (13) is installed inside the limiting slide cavity (14). The end of the spring (13) is fixed with a protrusion (9) that slides along the limiting slide cavity (14). The lower surface of the protrusion (9) is arc-shaped, and the upper surface of the protrusion (9) is engaged with the top of the inner cavity of the blocking groove (15).

7. The seepage prevention treatment device for preventing backfill material loss according to claim 1, characterized in that, The sealing and reinforcement unit (4) includes two parallel side blocks (22) and two end blocks. Each end block has an embedded groove on its edge and is perpendicular to the side blocks (22). The inner wall edge of the edge block (22) is provided with a mating part (23) that protrudes inward and cooperates with the embedded groove.

8. The seepage prevention treatment device for preventing backfill material loss according to claim 7, characterized in that, Each side block (22) and end block has a base (25) on the outer side of its bottom surface, and the base (25) has bolt holes; Each side block (22), end block and base (25) has an elastic sealing gasket (24) that fits tightly against the bottom surface of the inner cavity of the construction substrate (1).

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