Anti-seepage composite breast board used between support piles

Abstract

The invention discloses an anti-seepage composite breast board used between supporting piles, and relates to the technical field of foundation pit supporting, the anti-seepage composite breast board comprises concrete supporting piles and an anti-seepage breast board; the multiple concrete supporting piles and the multiple anti-seepage soil retaining plates are arranged, and every two vertically-adjacent anti-seepage soil retaining plates are spliced together. Through cooperative work of the pre-embedded connecting pieces, the flexible anti-seepage films, the plastic base plates, the reinforcing ribs, the splicing grooves, the tenon-and-mortise connecting pieces and other parts, the plastic base plates are matched with the reinforcing ribs, so that the structural strength and stability of the plate bodies can be guaranteed, and the upper and lower adjacent anti-seepage soil retaining plates are in accurate butt joint through the splicing grooves and the splicing strips; the anti-seepage soil retaining plates are clamped with embedded connecting pieces on the concrete supporting piles through mortise and tenon connecting pieces to be tightly attached to the supporting piles, and a flexible anti-seepage film completely covers the soil facing face, so that a continuous and reliable anti-seepage barrier is finally formed, and underground water is effectively prevented from carrying fine-particle soil to run away from gaps between the piles.

Description

Technical Field

[0001] This invention relates to the field of foundation pit support technology, specifically to a seepage-proof composite retaining plate for use between support piles. Background Technology

[0002] Retaining boards are protective components used in geotechnical engineering, municipal engineering, and building construction. Their main function is to provide lateral support and barrier to loose and unstable soil, preventing soil collapse and landslides, thereby ensuring the safety of the construction area or maintaining the stability of the site and slope. They can be used as independent simple support structures or in conjunction with support piles, anchors, soil nails, and other structures to form a more complete support system.

[0003] Chinese patent CN221645846U discloses a retaining plate structure between support piles. Through an adjustable device, the connecting shaft is inserted into the upper and lower ends of the sub-plate. Installation is completed by aligning the insert of the three-dimensional vertical plate with the groove of the diamond-shaped fastener. The connecting shaft can be rotated on the sub-plate, causing the main plate to rotate 90 degrees. At this point, the main plate and sub-plate are at right angles, facilitating quick enclosure of the support piles and effectively preventing soil from entering them. This reduces installation time and cumbersome procedures, improves the equipment's versatility, and adapts to various working environments.

[0004] Traditional retaining walls are mostly made of steel, wood, or ordinary concrete. Gaps are easily left at the joints of the walls, and the connection between the retaining piles and the side is poor. Under geological conditions such as high groundwater level or sandy or soft soil, groundwater can easily seep into the foundation pit through these gaps and carry away fine soil particles. Summary of the Invention

[0005] The purpose of this invention is to provide a seepage-proof composite retaining plate for use between support piles, so as to solve the problem that groundwater can easily seep into the foundation pit due to the poor sealing of the splicing and connection with the support piles of traditional retaining plates.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a seepage-proof composite retaining plate for use between support piles, comprising concrete support piles and a seepage-proof retaining plate;

[0007] Multiple concrete support piles and seepage-proof retaining plates are provided. Two adjacent seepage-proof retaining plates are spliced ​​together. A flexible seepage-proof membrane is installed on the soil-facing side of the seepage-proof retaining plate.

[0008] Multiple pre-embedded connectors are respectively pre-embedded in the inner sidewall of the corresponding concrete support pile;

[0009] The seepage-proof retaining plate includes a plastic base plate, two reinforcing ribs, a splicing groove, two tenon and mortise connectors, a splicing strip, and two splicing corners. The two reinforcing ribs are integrally embedded inside the plastic base plate. The splicing groove is opened at the top center of the plastic base plate. The two tenon and mortise connectors are respectively embedded in the middle of both ends of the plastic base plate, and the two tenon and mortise connectors are respectively engaged with the corresponding pre-embedded connectors. The splicing strip is installed at the bottom center of the plastic base plate, and the two splicing corners are respectively installed at both ends of the splicing strip.

[0010] Furthermore, a reinforcement mechanism is installed at the top of each of the two uppermost seepage-proof retaining plates. The flexible seepage-proof membrane completely covers the splicing gaps between the upper and lower adjacent seepage-proof retaining plates and the connection gaps between the seepage-proof retaining plates and the reinforcement mechanism. A support mechanism is installed between the two front and rear opposite seepage-proof retaining plates.

[0011] Furthermore, the seepage-proof retaining plate also includes grouting holes, multiple diversion holes, and two connecting holes. The grouting holes are opened at the middle of one end of the splicing strip, the multiple diversion holes are all opened on the inner wall of the grouting holes, and the two connecting holes are respectively opened at the middle of the opposite faces of the two splicing corners, and both connecting holes are connected to the grouting holes.

[0012] Furthermore, the reinforcement mechanism includes a reinforcement baffle, a reinforcement strip, multiple reinforcement components, and two connecting strips. The reinforcement strip is installed at the bottom center of the reinforcement baffle and is engaged with the splicing groove. The multiple reinforcement components are installed between the top of the reinforcement baffle and the outer wall. The two connecting strips are respectively installed at both ends of the reinforcement baffle.

[0013] Furthermore, the reinforcement component includes a reinforcing anchor, a limiting hole, a limiting anchor, and two fixing rings. The reinforcing anchor is threaded onto the outer wall of the reinforcing baffle. The limiting hole is opened in the middle of the outer wall of the reinforcing anchor. The limiting anchor passes through the interior of the limiting hole and is threaded onto the top of the reinforcing baffle. The two fixing rings are respectively installed at one end of the reinforcing anchor and the top of the limiting anchor.

[0014] Furthermore, the support mechanism includes two positive and negative screws, four adjusting brackets, multiple support rods, multiple connecting frames, and four adjusting handles. The four adjusting brackets are respectively threaded onto both sides of the outer wall of the two positive and negative screws. The multiple support rods are respectively installed in the adjusting grooves opened on the outer walls of the four adjusting brackets via movable shafts. The multiple connecting frames are respectively installed on the other side of the outer wall of the multiple support rods via movable shafts, and the other end of the multiple connecting frames is respectively installed on the inner side of the corresponding anti-seepage retaining plate. The four adjusting handles are respectively installed on both ends of the two positive and negative screws.

[0015] Furthermore, the support mechanism also includes a protective box, two synchronous pulleys, and a synchronous belt. The protective box is mounted between the middle of the outer walls of the two positive and negative screws via bearings. The two synchronous pulleys are respectively mounted between the middle of the outer walls of the two positive and negative screws. The synchronous belt is sleeved between the outer walls of the two synchronous pulleys.

[0016] Furthermore, multiple diversion holes are respectively connected to the contact surfaces of the splicing strip and the splicing groove, and all are connected to the grouting holes. The tenon and mortise connectors adopt butterfly tenons. The splicing groove and the splicing strip are both set as dovetail structures, and the bottom wall of the splicing groove is flush with the top surface of the tenon and mortise connector. The reinforcing ribs are set as a long strip-shaped grid structure. The plastic substrate is an integrated injection-molded HDPE board.

[0017] Furthermore, the diameter of the limiting hole is larger than the diameter of the limiting anchor, the reinforcing baffle is set as an L-shaped structure, the internal structure and cross-sectional shape of the reinforcing strip and the splicing strip are consistent, and the connecting strip is snapped into the corresponding pre-embedded connecting part.

[0018] Furthermore, both the timing pulley and the timing belt are located inside the protective box, and the outer wall of the timing pulley and the inner wall of the timing belt are respectively provided with multiple meshing tooth grooves, and the adjustment frame is configured as an H-shaped structure.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) The present invention utilizes the coordinated work of components such as pre-embedded connectors, flexible impermeable membranes, plastic substrates, reinforcing ribs, splicing grooves and tenon and mortise connectors. The plastic substrates, combined with reinforcing ribs, can ensure the structural strength and stability of the plate. The adjacent impermeable retaining plates are precisely connected to the splicing strips through splicing grooves. The impermeable retaining plates are then connected to the pre-embedded connectors on the concrete support piles through tenon and mortise connectors, achieving a tight fit with the support piles. In addition, the flexible impermeable membrane that fully covers the soil-facing surface ultimately forms a continuous and reliable impermeable barrier, effectively preventing groundwater carrying fine soil particles from flowing out from the gaps between the piles.

[0021] (2) Through the coordinated work of the reinforcing baffle, reinforcing strip, reinforcing parts and connecting strip, the reinforcing baffle enhances the reliability of the overall support. The limiting anchors pass through the limiting holes on the reinforcing anchors. The two are arranged in a cross pattern to form a cross-shaped support reinforcement and limiting structure, which effectively resists the impact of the lateral pressure of the soil on the top retaining plate and avoids loosening and displacement during long-term use. At the same time, the flexible seepage prevention membrane fully covers the connection gap between the retaining plate and the reinforcement mechanism, further ensuring the integrity of the seepage prevention system.

[0022] (3) The present invention utilizes the coordinated operation of components such as positive and negative screws, adjusting frames, support rods, connecting frames and adjusting handles. By rotating the adjusting handle, one of the positive and negative screws can be driven to rotate. Then, through the linkage of the synchronous wheel and the synchronous belt, the two adjusting frames on the two positive and negative screws move synchronously in opposite directions, thereby driving the connecting frame and the support rod to expand or retract synchronously. It can flexibly adjust the support strength and angle according to the actual stress of the foundation pit support and the spacing of the retaining plate, providing uniform and stable lateral support for the seepage-proof retaining plate, and effectively improving the support reliability and overall stability of the retaining plate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0025] Figure 2 A connection diagram of concrete support piles and seepage-proof retaining plates is provided for embodiments of the present invention;

[0026] Figure 3 A structural cross-sectional view of a seepage-proof retaining plate is provided for an embodiment of the present invention;

[0027] Figure 4 A connection diagram of the splicing strip and splicing corner is provided for embodiments of the present invention;

[0028] Figure 5 A structural schematic diagram of the reinforcement mechanism is provided for embodiments of the present invention;

[0029] Figure 6 A schematic diagram of the reinforcement component is provided for an embodiment of the present invention;

[0030] Figure 7 A structural schematic diagram of the support mechanism is provided for an embodiment of the present invention;

[0031] Figure 8 A structural cross-sectional view of the protective box is provided for an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Concrete support piles; 2. Embedded connectors; 3. Leak-proof retaining wall; 4. Flexible geomembrane; 5. Reinforcement mechanism; 6. Support mechanism; 31. Plastic substrate; 32. Reinforcing ribs; 33. Splicing groove; 34. Tenon and mortise connectors; 35. Splicing strips; 36. Splicing corners; 37. Grouting holes; 38. Diversion holes; 39. Connecting holes; 51. Reinforcement baffle; 52. Reinforcement strips; 53. Reinforcement components; 54. Connecting strips; 531. Reinforcement anchors; 532. Limiting holes; 533. Limiting anchors; 534. Fixing rings; 61. Positive and negative screws; 62. Adjustment frame; 63. Support rod; 64. Connecting frame; 65. Adjustment handle; 66. Protective box; 67. Synchronous pulley; 68. Synchronous belt. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] As attached Figure 1 To be continued Figure 8 As shown:

[0036] Example 1:

[0037] This invention provides a seepage-proof composite retaining plate for use between support piles, comprising concrete support piles 1 and seepage-proof retaining plate 3;

[0038] Multiple concrete support piles 1 and seepage-proof retaining plates 3 are provided. Two adjacent seepage-proof retaining plates 3 are spliced ​​together. A flexible seepage-proof membrane 4 is installed on the soil-facing side of the seepage-proof retaining plate 3. It has good flexibility and seepage-proof performance, can adapt to soil deformation, and prevent groundwater leakage.

[0039] Multiple pre-embedded connectors 2 are pre-embedded in the inner wall of the corresponding concrete support piles 1. They are pre-embedded during the pouring of the concrete support piles 1 and are tightly bonded to the concrete. The pre-embedded connectors 2 are provided with grooves that are compatible with the tenon and mortise connectors 34, providing reliable connection points for the subsequent installation of the seepage-proof retaining plate 3.

[0040] The seepage-proof retaining plate 3 includes a plastic base plate 31, two reinforcing ribs 32, a splicing groove 33, two tenon and mortise connectors 34, a splicing strip 35, and two splicing corners 36. The two reinforcing ribs 32 are integrally embedded inside the plastic base plate 31, which enhances the strength and rigidity of the plastic base plate 31 and enables it to better withstand soil pressure. The splicing groove 33 is opened at the top center of the plastic base plate 31. The two tenon and mortise connectors 34 are respectively embedded in the middle of both ends of the plastic base plate 31, and the two tenon and mortise connectors 34 are respectively snapped with the corresponding pre-embedded connectors 2. The splicing strip 35 is installed at the bottom center of the plastic base plate 31. The two splicing corners 36 are respectively installed at both ends of the splicing strip 35. The splicing corners 36 can be adapted to snapped with the pre-embedded connectors 2 and can also be inserted into the splicing groove 33 of the adjacent seepage-proof retaining plate 3, which is conducive to the assembly of the seepage-proof retaining plate 3.

[0041] The top of each of the two uppermost seepage-proof retaining plates 3 is equipped with a reinforcement mechanism 5. The reinforcement mechanism 5 can enhance the stability of the uppermost seepage-proof retaining plate 3 and prevent it from deforming or displacing under the action of soil pressure. The flexible seepage-proof membrane 4 completely covers the splicing gaps of the upper and lower adjacent seepage-proof retaining plates 3 and the connection gaps between the seepage-proof retaining plates 3 and the reinforcement mechanism 5. The complete coverage of the gaps can effectively prevent the infiltration of groundwater and ensure the seepage-proof effect. A support mechanism 6 is installed between the two front and rear opposite seepage-proof retaining plates 3. The support mechanism 6 provides lateral support for the front and rear opposite seepage-proof retaining plates 3 and enhances the stability of the entire retaining structure.

[0042] The seepage-proof retaining plate 3 also includes grouting holes 37, multiple diversion holes 38 and two connecting holes 39. The grouting holes 37 are opened at the middle of one end of the splicing strip 35. The grouting holes 37 are used to inject grout into the splicing part to improve the density and strength of the splicing. The multiple diversion holes 38 are all opened on the inner wall of the grouting holes 37. The two connecting holes 39 are respectively opened at the middle of the opposite face of the two splicing corners 36, and the two connecting holes 39 are connected to the grouting holes 37.

[0043] Multiple diversion holes 38 extend to the contact surfaces of the splicing strip 35 and the splicing groove 33, and all communicate with the grouting holes 37. This design allows the grout to directly reach the key splicing parts, improving the splicing quality. The tenon and mortise connector 34 uses a butterfly tenon, which has good connection performance and stability, ensuring a reliable connection between the seepage-proof retaining plate 3 and the pre-embedded connector 2. Both the splicing groove 33 and the splicing strip 35 are designed with dovetail structures, which prevent the splicing strip 35 from coming out of the splicing groove 33. To ensure the firmness of the splicing, the bottom wall of the splicing groove 33 is flush with the top surface of the tenon and mortise connector 34, which facilitates the smooth insertion of the splicing strip 35 into the splicing groove 33. The reinforcing ribs 32 are set as a long strip-shaped grid structure. This grid structure can reduce the weight of the plastic substrate 31 and reduce costs while ensuring strength. The plastic substrate 31 is made of integrated injection-molded HDPE sheet. HDPE sheet has good corrosion resistance, flexibility and strength, and is suitable for making anti-seepage retaining plate 3.

[0044] Working principle: In use, multiple concrete retaining piles 1 are first laid out at preset intervals. Then, adjacent seepage-proof retaining plates 3 are precisely connected to splicing strips 35 through dovetail splicing grooves 33. After splicing, grout is injected into the connecting hole 39. The grout then flows into multiple diversion holes 38 through grouting holes 37, eventually penetrating to the contact surface between the splicing strip 35 and the splicing groove 33, filling the gaps in the contact area, achieving a firm splicing of adjacent seepage-proof retaining plates 3, and improving the overall structure. Then, the tenon and mortise connectors 34 are snapped and fixed with the corresponding pre-embedded connectors 2, so that the seepage-proof retaining plates 3 and the adjacent concrete retaining piles 3 are firmly connected. The concrete support piles 1 are firmly installed and tightly fitted to enhance the sealing of the pile-slab connection. In addition, the plastic base plate 31 of the seepage-proof retaining plate 3 is made of integrated injection-molded HDPE sheet, with long strip-shaped grid structure reinforcing ribs 32. While ensuring the strength and stability of the plate structure, it further enhances its own sealing foundation. The flexible seepage-proof membrane 4 installed on the soil-facing side fully covers the upper and lower splicing gaps and the connection gaps with the reinforcement mechanism 5, constructing a continuous seepage barrier. It successfully prevents groundwater carrying fine soil particles from seeping into the foundation pit from the gaps between the piles. It is suitable for complex geological conditions such as high groundwater levels, sandy soil, and soft soil.

[0045] Example 2:

[0046] This embodiment is basically the same as the previous embodiment, except that the reinforcement mechanism 5 includes a reinforcement baffle 51, a reinforcement strip 52, multiple reinforcement parts 53 and two connecting strips 54. The reinforcement strip 52 is installed at the bottom center of the reinforcement baffle 51 and is snapped into the splicing groove 33. The multiple reinforcement parts 53 are installed between the top of the reinforcement baffle 51 and the outer wall. The two connecting strips 54 are respectively installed at both ends of the reinforcement baffle 51.

[0047] The reinforcement component 53 includes a reinforcing anchor 531, a limiting hole 532, a limiting anchor 533, and two fixing rings 534. The reinforcing anchor 531 is threaded onto the outer wall of the reinforcing baffle 51. The limiting hole 532 is opened in the middle of the outer wall of the reinforcing anchor 531. The limiting anchor 533 passes through the inside of the limiting hole 532 and is threaded onto the top of the reinforcing baffle 51. The two fixing rings 534 are respectively installed at one end of the reinforcing anchor 531 and the top of the limiting anchor 533.

[0048] The diameter of the limiting hole 532 is larger than the diameter of the limiting anchor 533, which facilitates the insertion of the limiting anchor 533 into the limiting hole 532 while ensuring the limiting effect. The reinforcing baffle 51 is set as an L-shaped structure, which can better adapt to the edge of the foundation pit and provide effective reinforcement and soil retention. The internal structure and cross-sectional shape of the reinforcing strip 52 are consistent with those of the splicing strip 35, so that the reinforcing strip 52 can also be reinforced by injecting grout through the holes on it. The connecting strip 54 is snapped into the corresponding pre-embedded connector 2, so that the connecting strip 54 and the pre-embedded connector 2 are firmly connected.

[0049] Working principle: In use, first, the reinforcing strip 52 is snapped into the splicing groove 33 of the uppermost seepage-proof retaining plate 3, and then the connecting strip 54 is snapped into the corresponding pre-embedded connecting piece 2, thereby achieving a firm fixation between the reinforcing retaining plate 51 and the two adjacent concrete support piles 1. Then, the reinforcing parts 53 are installed: first, the reinforcing anchor 531 is screwed into the outer wall of the reinforcing retaining plate 51 and inserted into the foundation pit soil, so that the ring opening of the fixing ring 534 on the reinforcing anchor 531 faces upward, and the limiting hole 532 on it faces upward at the same time. Then, the limiting anchor 533 is screwed into the top of the reinforcing retaining plate 51 and inserted into the foundation pit soil. Within the structure, the limiting anchor 533 passes through the limiting hole 532, so that the reinforcing anchor 531 and the limiting anchor 533 form a cross layout. This structure can further strengthen the connection and fixation effect between the reinforcing baffle 51 and the foundation pit soil, effectively resist the impact of the lateral pressure of the soil on the top retaining plate, significantly improve the lateral pressure resistance of the uppermost seepage-proof retaining plate 3, prevent it from loosening or shifting under soil load, and at the same time ensure the sealing of the area covered by the flexible seepage-proof membrane 4, prevent new gaps from being generated due to the shift of the retaining plate, and further enhance the stability and seepage-proof reliability of the overall support structure.

[0050] Example 3:

[0051] This embodiment is basically the same as the previous embodiment, except that the support mechanism 6 includes two positive and negative screws 61, four adjusting brackets 62, multiple support rods 63, multiple connecting frames 64, and four adjusting handles 65. The four adjusting brackets 62 are respectively threaded onto the outer walls of the two positive and negative screws 61. The multiple support rods 63 are respectively installed in the adjusting grooves opened on the outer walls of the four adjusting brackets 62 via movable shafts. The multiple connecting frames 64 are respectively installed on the other side of the outer walls of the multiple support rods 63 via movable shafts, and the other end of the multiple connecting frames 64 is respectively installed on the inner side of the corresponding anti-seepage retaining plate 3. The four adjusting handles 65 are respectively installed on both ends of the two positive and negative screws 61.

[0052] The support mechanism 6 also includes a protective box 66, two synchronous pulleys 67 and a synchronous belt 68. The protective box 66 is installed between the middle of the outer walls of the two positive and negative screws 61 by bearings. The two synchronous pulleys 67 are respectively installed between the middle of the outer walls of the two positive and negative screws 61. The synchronous belt 68 is sleeved between the outer walls of the two synchronous pulleys 67.

[0053] Both the synchronous pulley 67 and the synchronous belt 68 are located inside the protective box 66, which protects the synchronous pulley 67 and the synchronous belt 68. The outer wall of the synchronous pulley 67 and the inner wall of the synchronous belt 68 are provided with multiple meshing tooth grooves. The meshing of the tooth grooves can ensure the transmission accuracy and reliability between the synchronous pulley 67 and the synchronous belt 68 and prevent slippage. The adjusting frame 62 is set with an H-shaped structure. The H-shaped structure has high strength and stability and can withstand a large supporting force to ensure the normal operation of the support mechanism 6.

[0054] Working principle: In use, first install the connecting frame 64 on the inner side of the corresponding seepage-proof retaining plate 3. Then, rotate the adjusting handle 65 to drive the corresponding positive and negative screws 61 to rotate. With the meshing transmission of the two synchronous pulleys 67 and the synchronous belt 68 inside the protective box 66, the two positive and negative screws 61 are ensured to operate synchronously. This drives the H-shaped adjusting frame 62, which is threaded on both sides of the screw, to move synchronously in opposite directions. When the adjusting frame 62 moves, it drives the multiple support rods 63 in the adjusting grooves on both sides to unfold or retract through the movable shaft. The other end of the support rod 63 then drives the connecting frame 64 to tightly abut against the seepage-proof retaining plate through the movable shaft. Inside the retaining plate 3, this structure can flexibly adjust the support force and angle according to the actual stress of the foundation pit support and the spacing of the retaining plates, providing uniform and stable lateral support for the seepage-proof retaining plate 3, effectively offsetting the lateral pressure of the soil, and preventing the retaining plate from deforming and collapsing. In addition, the support mechanism 6, through synchronous transmission design, ensures uniform support force on both sides, adapts to the stress deformation of the retaining plate, further enhances the reliability and adaptability of the overall support structure. The protective box 66 can also protect the internal transmission components, avoid soil and water erosion, ensure adjustment accuracy and equipment service life, and improve the durability of the support structure.

[0055] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A composite retaining wall for preventing seepage between support piles, characterized in that, include: Concrete support piles (1) and seepage-proof retaining walls (3); Multiple concrete support piles (1) and seepage-proof retaining plates (3) are provided. Two adjacent seepage-proof retaining plates (3) are spliced ​​together. A flexible seepage-proof membrane (4) is installed on the soil-facing side of the seepage-proof retaining plate (3). Multiple pre-embedded connectors (2) are respectively pre-embedded in the inner sidewall of the corresponding concrete support pile (1); The seepage-proof retaining plate (3) includes a plastic base plate (31), two reinforcing ribs (32), a splicing groove (33), two tenon and mortise connectors (34), a splicing strip (35), and two splicing corners (36). The two reinforcing ribs (32) are integrally embedded inside the plastic base plate (31). The splicing groove (33) is opened at the top center of the plastic base plate (31). The two tenon and mortise connectors (34) are respectively embedded in the middle of both ends of the plastic base plate (31), and the two tenon and mortise connectors (34) are respectively engaged with the corresponding pre-embedded connectors (2). The splicing strip (35) is installed at the bottom center of the plastic base plate (31), and the two splicing corners (36) are respectively installed at both ends of the splicing strip (35).

2. The composite retaining wall for seepage prevention between support piles according to claim 1, characterized in that, The top of the two uppermost seepage-proof retaining plates (3) are equipped with a reinforcement mechanism (5). The flexible seepage-proof membrane (4) completely covers the splicing gap of the upper and lower adjacent seepage-proof retaining plates (3) and the connection gap between the seepage-proof retaining plates (3) and the reinforcement mechanism (5). A support mechanism (6) is installed between the two front and rear opposite seepage-proof retaining plates (3).

3. A composite retaining wall for seepage prevention between support piles according to claim 1, characterized in that, The seepage-proof retaining plate (3) also includes a grouting hole (37), multiple diversion holes (38) and two connecting holes (39). The grouting hole (37) is opened at the middle of one end of the splicing strip (35). The multiple diversion holes (38) are all opened on the inner wall of the grouting hole (37). The two connecting holes (39) are respectively opened at the middle of the opposite face of the two splicing corners (36), and the two connecting holes (39) are connected to the grouting hole (37).

4. A composite retaining wall for seepage prevention between support piles according to claim 2, characterized in that, The reinforcement mechanism (5) includes a reinforcement baffle (51), a reinforcement strip (52), multiple reinforcement parts (53) and two connecting strips (54). The reinforcement strip (52) is installed at the bottom center of the reinforcement baffle (51) and is engaged with the splicing groove (33). The multiple reinforcement parts (53) are installed between the top of the reinforcement baffle (51) and the outer wall. The two connecting strips (54) are respectively installed at both ends of the reinforcement baffle (51).

5. A composite retaining wall for seepage prevention between support piles according to claim 4, characterized in that, The reinforcement component (53) includes a reinforcement anchor (531), a limiting hole (532), a limiting anchor (533), and two fixing rings (534). The reinforcement anchor (531) is threaded onto the outer wall of the reinforcement baffle (51). The limiting hole (532) is opened in the middle of the outer wall of the reinforcement anchor (531). The limiting anchor (533) passes through the inside of the limiting hole (532) and is threaded onto the top of the reinforcement baffle (51). The two fixing rings (534) are respectively installed at one end of the reinforcement anchor (531) and the top of the limiting anchor (533).

6. A composite retaining wall for seepage prevention between support piles according to claim 2, characterized in that, The support mechanism (6) includes two positive and negative screws (61), four adjusting brackets (62), multiple support rods (63), multiple connecting frames (64), and four adjusting handles (65). The four adjusting brackets (62) are respectively threaded onto the outer walls of the two positive and negative screws (61). The multiple support rods (63) are respectively installed in the adjusting grooves opened on the outer walls of the four adjusting brackets (62) via movable shafts. The multiple connecting frames (64) are respectively installed on the other side of the outer walls of the multiple support rods (63) via movable shafts, and the other end of the multiple connecting frames (64) is respectively installed on the inner side of the corresponding anti-seepage retaining plate (3). The four adjusting handles (65) are respectively installed on both ends of the two positive and negative screws (61).

7. A composite retaining wall for seepage prevention between support piles according to claim 6, characterized in that, The support mechanism (6) also includes a protective box (66), two synchronous pulleys (67) and a synchronous belt (68). The protective box (66) is installed between the middle of the outer walls of the two positive and negative screws (61) by bearings. The two synchronous pulleys (67) are respectively installed in the middle of the outer walls of the two positive and negative screws (61). The synchronous belt (68) is sleeved between the outer walls of the two synchronous pulleys (67).

8. A composite retaining wall for seepage prevention between support piles according to claim 3, characterized in that, Multiple diversion holes (38) are respectively connected to the contact surfaces of the splicing strip (35) and the splicing groove (33), and are all connected to the grouting hole (37). The tenon and mortise connector (34) adopts a butterfly tenon. The splicing groove (33) and the splicing strip (35) are both set as dovetail structures, and the bottom wall of the splicing groove (33) is flush with the top surface of the tenon and mortise connector (34). The reinforcing rib (32) is set as a long strip-shaped grid structure. The plastic substrate (31) is an integrated injection-molded HDPE board.

9. A composite retaining wall for seepage prevention between support piles according to claim 5, characterized in that, The diameter of the limiting hole (532) is larger than the diameter of the limiting anchor (533). The reinforcing baffle (51) is set as an L-shaped structure. The internal structure and cross-sectional shape of the reinforcing strip (52) are consistent with those of the splicing strip (35). The connecting strip (54) is snapped into the corresponding pre-embedded connecting piece (2).

10. A composite retaining wall for seepage prevention between support piles according to claim 7, characterized in that, The synchronous pulley (67) and the synchronous belt (68) are both located inside the protective box (66), and the outer wall of the synchronous pulley (67) and the inner wall of the synchronous belt (68) are provided with multiple meshing tooth grooves. The adjusting frame (62) is configured as an H-shaped structure.

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