Impermeable wall and construction method

Abstract

The invention discloses an anti-seepage wall and a construction method. The anti-seepage wall comprises a cement-soil continuous wall, prefabricated parts arranged in the cement-soil continuous wall and a connecting structure used for connecting every two vertically-adjacent prefabricated parts together. The connecting structure comprises a connecting base welded to the end of the prefabricated part and an anti-pulling assembly. The anti-pulling assembly comprises a connecting disc, a first connecting piece arranged at the lower end of the prefabricated part and a second connecting piece arranged at the upper end of the prefabricated part, and the connecting disc is provided with a first limiting groove matched with the first connecting piece and a second limiting groove matched with the second connecting piece. A containing groove is formed in the connecting base, and the connecting disc is located in the containing groove. The connection stability of the prefabricated parts can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of anti-seepage walls, and in particular to an anti-seepage wall and a construction method. Background Art

[0002] Underground anti-seepage walls can be divided into cast-in-place and prefabricated types according to their structure. Cast-in-place anti-seepage walls mainly include cement soil continuous walls and reinforced concrete underground continuous walls formed by channel cutting, mixing, rotary spraying, milling and other methods. Prefabricated anti-seepage walls are mainly TAD walls, which are called channel-cut assembled underground anti-seepage walls. It is an innovative construction technology that inserts concrete prefabricated panels during the construction of channel-cut cement soil continuous walls. These prefabricated panels are reliably connected to form a concrete underground anti-seepage wall with soil retaining and water interception functions.

[0003] The construction process of TAD wall mainly includes measurement and positioning, using TRD trenching machine to excavate the trench, setting up a positioning frame at the upper end of the trench and injecting cement slurry into the trench, and inserting the prefabricated components of the anti-seepage wall into the trench.

[0004] Due to the deepness of the trough, all prefabricated components need to be connected to reach the predetermined depth. Iron embedded parts are embedded at the ends of the prefabricated components. During construction, after one section of the prefabricated component is inserted into the trough, its upper end is positioned by the positioning frame, and then another prefabricated component is hoisted and aligned with the upper end of the prefabricated component fixed by the positioning frame. The lower end of the hoisted prefabricated component and the upper end of the prefabricated component below are welded, and then they are lowered again after being connected, thereby completing the construction of the anti-seepage wall. Since the upper and lower prefabricated components are connected by welding, welding can generally only be performed along the edge of the embedded parts, and the connection strength of the prefabricated components needs to be improved. Summary of the invention

[0005] In a first aspect, in order to further improve the connection strength between prefabricated components, the present application provides an anti-seepage wall.

[0006] This application adopts the following technical solutions:

[0007] A kind of anti-seepage wall comprises a cement soil continuous wall, a prefabricated component arranged in the cement soil continuous wall and a connecting structure for connecting two upper and lower adjacent prefabricated components together; the connecting structure comprises a connecting seat welded to the end of the prefabricated component and an anti-pullout assembly; the anti-pullout assembly comprises a connecting disk, a first connecting member arranged at the lower end of the prefabricated component and a second connecting member arranged at the upper end of the prefabricated component, the connecting disk is provided with a first limiting groove matched with the first connecting member and a second limiting groove matched with the second connecting member, the connecting seat is provided with a receiving groove, the connecting disk is located in the receiving groove, the second connecting member passes through the connecting seat and extends into the receiving groove to be connected with the second limiting groove, and the first connecting member extends into the receiving groove to be connected with the first limiting groove; the side wall of the connecting seat is provided with a driving member, and the driving member can drive the connecting disk to rotate in the receiving groove, so that the first connecting member is clamped in the first limiting groove and the second connecting member is clamped in the second limiting groove.

[0008] By adopting the above technical solution, when the upper and lower prefabricated components are connected, the connecting seat is first connected to the lower prefabricated component, and the second connecting piece extends into the receiving groove and cooperates with the second limiting groove, the upper prefabricated component is hoisted on the connecting seat, the first connecting piece extends into the receiving groove and cooperates with the first limiting groove, and then the driving member drives the connecting disk to rotate, so that the first connecting piece and the second connecting piece are engaged with the connecting disk, and then the connecting seat and the end of the prefabricated component are welded. The two prefabricated components are connected together under the action of the connecting disk, and when subjected to a pulling force, the connecting disk can improve the connection strength between the prefabricated components, thereby reducing the possibility of fracture at the welding point.

[0009] Optionally, the first connecting member includes a first connecting column and a first limiting block arranged at the end of the first connecting column, and the second connecting member includes a second connecting column and a second limiting block arranged at the end of the second connecting column; the first limiting groove is arranged on the lower surface of the connecting disk, and the second limiting groove is arranged on the upper surface of the connecting disk, the first limiting groove includes a through groove that passes through the connecting disk and is used for the first limiting block to pass through, a yield groove that is connected to the through groove and is used for the first connecting column to slide, and a clamping groove for accommodating the first limiting block, when the connecting disk rotates, the first connecting column can slide into the yield groove and the first limiting block can be clamped in the clamping groove; the second limiting groove has the same structure as the first limiting groove and cooperates with the second connecting member.

[0010] By adopting the above technical solution, the first limit block passes through the through groove, and then when the connecting disk rotates, the first limit block can move into the clamping groove, so that the groove provides space for the first connecting column to move, and the second connecting piece and the second limit groove cooperate in the same way and in opposite directions; when subjected to a pulling force, the connecting disk connects the first connecting piece and the second connecting piece together, thereby improving the stability of the connection.

[0011] Optionally, the driving member includes a driving rod threadedly connected to the connecting seat, a driving groove is provided on the side wall of the connecting disk, an abutment surface is obliquely provided on the inner wall of the driving groove, an end of the driving rod extends into the driving groove and abuts against the abutment surface, and when the driving rod moves in a direction close to the driving groove, the driving rod can push the connecting disk to rotate through the abutment surface.

[0012] By adopting the above technical solution, the connecting disk can be driven to rotate in the accommodating groove through the driving rod.

[0013] Optionally, an extension seat is provided at the lower end of the prefabricated component, and the extension seat can be inserted into the accommodating groove. The side wall of the extension seat is provided with a sliding groove, and a plug-in block is slidably arranged in the sliding groove, and the inner wall of the accommodating groove is provided with a slot for the plug-in block to be inserted; a linkage member is provided in the extension seat, and when the connecting disk rotates, the linkage member can be pressed by the connecting disk to drive the plug-in block to slide and be inserted into the slot.

[0014] By adopting the above technical solution, the connecting disk rotates, and drives the plug-in block to slide out of the sliding groove and into the crocodile slot through linkage, so that the extension seat and the connecting seat are connected together, further improving the stability of the connection between the prefabricated component and the connecting seat.

[0015] Optionally, the extension seat is provided with a slot, the slot is communicated with the sliding slot, the linkage part includes a linkage rod slidably connected to the slot up and down and a spring arranged in the slot, the upper surface of the connecting plate is provided with an abutment groove, the bottom surface of the abutment groove is inclined, the end of the linkage rod abuts against the abutment groove, when the connecting plate rotates, the linkage rod is pressed by the bottom surface of the abutment groove and slides upward into the slot, and the plug-in block is pushed by the side wall of the linkage rod and inserted into the slot.

[0016] By adopting the above technical solution, the connection disk rotates to drive the linkage rod to move upward and push the plug-in block to slide, so that the plug-in block can be inserted into the slot.

[0017] Optionally, connecting cavities are provided on both sides of the connecting seat, a first bent rib is provided at the lower end of the prefabricated component, and a second bent rib is provided at the upper end of the prefabricated component. When the prefabricated component and the connecting seat are connected, the first bent rib and the second bent rib are inserted into the connecting cavity, a through rod is provided on the connecting seat, and a through groove for the through rod to be passed through is provided on the connecting seat, the through rod passes through the ends of the first bent rib and the second bent rib, and locking blocks are threadedly connected to the outer walls of both ends of the through rod, the first bent rib and the second bent rib are located between the two locking blocks, and the locking blocks can be pressed against the side walls of the first bent rib or the second bent rib.

[0018] By adopting the above technical solution, the through rod connects the first bending rib and the second bending rib together, thereby further improving the stability of the connection of the prefabricated components.

[0019] Optionally, an installation groove is provided on the inner wall of the accommodating groove, a limit block is arranged in the installation groove, two plug blocks are arranged on the limit block, and limit holes for plugging the plug blocks are provided on the side walls of the connecting plate and the extension seat; the limit block and the penetration rod are linked to each other, and when the penetration rod passes through the connecting seat, the limit block slides in the installation groove so that the plug block is plugged into the limit hole.

[0020] By adopting the above technical solution, the plug blocks are respectively inserted into the limiting holes of the extension seat and the connecting plate, thereby connecting the extension seat and the connecting plate together, further limiting the extension seat and the connecting plate from being separated due to pulling force.

[0021] Optionally, an extension rod is provided on the side of the limit block facing away from the insertion block, and one end of the extension rod away from the limit block extends to the penetration groove. When the penetration rod passes through the penetration groove, the extension rod is pressed by the penetration rod and slides in a direction away from the penetration groove.

[0022] By adopting the above technical solution, the penetration rod pushes the extension rod to slide, thereby pushing the insertion block to be inserted into the limiting hole. Under the action of the penetration rod, the insertion block is not easy to be separated from the limiting hole.

[0023] In a second aspect, the present application provides a construction method for an anti-seepage wall.

[0024] A construction method for an anti-seepage wall comprises the following steps:

[0025] (1) Measure and locate, and use trenching equipment to form trenches. Inject solidifying liquid into the bottom of the cutting box to mix it with the in-situ soil to form a cement continuous wall of equal thickness;

[0026] (2) A positioning frame is arranged at the upper end of the trough body, and the prefabricated component is lifted by a lifting device and inserted into the trough body through the positioning frame. Then, the prefabricated component is positioned by the positioning frame, and another prefabricated component is lifted and connected to the prefabricated component fixed on the positioning frame through a connecting structure, and then the prefabricated component is lowered;

[0027] (3) When the construction of the current construction section is completed, the above steps are repeated in a cycle until the construction of the entire anti-seepage wall is completed.

[0028] In summary, the present application includes at least one of the following beneficial effects:

[0029] 1. The upper and lower prefabricated components are connected through the connecting seat, and the two prefabricated components are connected together through the action of the anti-pullout component to improve the tensile strength of the prefabricated components after connection;

[0030] 2. The rotation of the connecting plate can drive the plug-in block to be inserted into the slot through the linkage, thereby connecting the extension seat and the connecting seat together, further increasing the acting force between the prefabricated component and the connecting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of Example 1 of the present application;

[0032] Figure 2 This is a schematic diagram of prefabricated component connection in Example 1 of the present application;

[0033] Figure 3 is an explosion diagram of Example 1 of the present application;

[0034] Figure 4 It is an exploded schematic diagram of the connecting plate and the extension seat in Example 1 of the present application;

[0035] Figure 5 It is an exploded schematic diagram of the connection disk and the connection seat in Example 1 of the present application;

[0036] Figure 6 is a schematic diagram of the connection disk in Example 1 of the present application;

[0037] Figure 7 is a cross-sectional schematic diagram of the extension seat in Example 1 of the present application;

[0038] Figure 8 It is a cross-sectional schematic diagram of the connecting socket in Example 1 of the present application.

[0039] Description of the accompanying drawings: 1. cement soil continuous wall; 2. prefabricated component; 3. connection structure; 4. connection seat; 5. pull-out assembly; 51. connection plate; 52. first connection member; 521. first connection column; 522. first limit block; 53. second connection member; 531. second connection column; 532. second limit block; 6. first limit groove; 61. through groove; 62. clearance groove; 63. clamping groove; 7. second limit groove; 8. accommodating groove; 9. driving member; 91 , driving rod; 10, driving groove; 11, abutment surface; 12, extension seat; 13, sliding groove; 14, plug-in block; 15, slot; 16, linkage member; 161, linkage rod; 162, spring; 17, slot; 18, abutment groove; 19, connecting cavity; 20, first bending rib; 21, second bending rib; 22, through groove; 23, through rod; 24, locking block; 25, installation groove; 26, limit block; 27, plug-in block; 28, limit hole; 29, extension rod. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-8 This application is described in further detail.

[0041] Example 1

[0042] The present application embodiment discloses an anti-seepage wall. Figure 1 and Figure 2 The anti-seepage wall includes a cement soil continuous wall 1, a prefabricated component 2 arranged in the cement soil continuous wall 1, and a connection structure 3 for connecting the upper and lower prefabricated components 2. The prefabricated component 2 is a long strip structure. After the trough is formed, cement slurry is injected to form the cement soil continuous wall 1. Before the cement soil continuous wall 1 solidifies, the prefabricated component 2 is inserted into the cement soil continuous wall 1. The ends of the upper and lower prefabricated components 2 in the vertical direction are connected to each other, and the adjacent prefabricated components 2 in the horizontal direction are abutted against each other, thereby forming an anti-seepage wall with soil retaining and water interception functions.

[0043] Reference Figure 3 and Figure 4 The connection structure 3 includes a connection seat 4 and an anti-pullout assembly 5. The upper and lower ends of the prefabricated component 2 are both pre-embedded with iron embedded plates, and the upper and lower surfaces of the connection seat 4 are both provided with iron plates. The upper end of the prefabricated component 2 is welded to the lower surface of the connection seat 4, and the lower end of the prefabricated component 2 is welded to the upper surface of the connection seat 4, so that the upper and lower prefabricated components 2 are connected together through the connection seat 4. The anti-pullout assembly 5 is used to connect the upper and lower prefabricated components 2 together, and further improve the stability of the prefabricated components 2 connected together.

[0044] Reference Figure 3-Figure 4 The anti-pullout assembly 5 includes a connection plate 51, a first connection member 52 disposed at the lower end of the prefabricated component 2, and a second connection member 53 disposed at the upper end of the prefabricated component 2. Figure 5 A receiving groove 8 is provided on the connecting seat 4, and a connecting disk 51 is located in the receiving groove 8. The connecting disk 51 is a disc-shaped structure, and the side wall of the connecting disk 51 can abut against the inner wall of the receiving groove 8, so that the connecting disk 51 is not easily offset.

[0045] Reference Figure 3 and Figure 4 , a first limiting groove 6 cooperating with the first connecting member 52 is provided on the connecting disk 51, and a second limiting groove 7 cooperating with the second connecting member 53 is also provided on the connecting disk 51. When the prefabricated component 2 abuts against the upper and lower sides of the connecting seat 4 respectively, the second connecting member 53 can pass through the connecting seat 4 and extend into the receiving groove 8, and the first connecting member 52 also extends into the receiving groove 8 and cooperates with the connecting disk 51. A driving member 9 is installed on the connecting seat 4, and the driving member 9 is used to drive the connecting disk 51 to rotate in the receiving groove 8, so that the first connecting member 52 and the first limiting groove 6 become in a snap-fit ​​state, and the second connecting member 53 and the second limiting groove 7 become in a snap-fit ​​state. Under the action of the connecting disk 51, the first connecting member 52 and the second connecting member 53, the ends of the prefabricated component 2 are connected together.

[0046] Reference Figure 4 and Figure 5 The first connecting member 52 includes a first connecting column 521 fixed to the lower end of the prefabricated component 2 and a first limiting block 522 fixed to the lower end of the first connecting column 521. The cross-sectional area of ​​the first limiting block 522 is larger than the cross-sectional area of ​​the first connecting column 521. The second connecting member 53 includes a second connecting column 531 fixed to the upper end of the prefabricated component 2 and a second limiting block 532 fixed to the upper end of the second connecting column 531, and the cross-sectional area of ​​the second limiting block 532 is larger than the cross-sectional area of ​​the second connecting column 531. The first limiting block 522 and the second limiting block 532 can be fixed by later threaded connection or welding. The first connecting member 52 and the second connecting member 53 are both provided with two groups, and the first limiting groove 6 and the second limiting groove 7 are provided correspondingly thereto.

[0047] The first limiting groove 6 is provided on the lower surface of the connecting disk 51, and the first limiting groove 6 includes a through groove 61 penetrating the connecting disk 51, a clearance groove 62 communicating with the through groove 61, and a clamping groove 63 for accommodating the first limiting block 522. The size of the through groove 61 is adapted to the first limiting block 522, the width of the clearance groove 62 is adapted to the first connecting column 521, and the clamping groove 63 is located on the lower surface of the connecting disk 51. The first limiting block 522 moves downward and passes through the through groove 61, and then when the driving member 9 drives the connecting disk 51 to rotate, the first connecting column 521 slides relatively in the clearance groove 62, and the first limiting block 522 abuts against the clamping groove 63. When the connecting disk 51 is subjected to a pulling force and moves downward, the first limiting block 522 can abut against the inner wall of the clamping groove 63 to limit the movement of the connecting disk 51. The second limiting groove 7 has the same structure as the first limiting groove 6, except that the second limiting groove 7 is located on the upper surface of the connecting plate 51 to cooperate with the second connecting member 53. Therefore, the first connecting member 52 and the second connecting member 53 are connected together through the connecting plate 51, thereby improving the pull-out resistance of the connection of the prefabricated component 2.

[0048] Reference Figure 5 and Figure 6 The driving member 9 includes a driving rod 91 threadedly connected to the side wall of the connecting seat 4, and one end of the driving rod 91 can extend into the accommodating groove 8. A driving groove 10 is provided on the side wall of the connecting disk 51, and an inner wall of the driving groove 10 is inclinedly provided with an abutting surface 11, and the end of the driving rod 91 extends into the driving groove 10 and abuts against the abutting surface 11. When the driving rod 91 continuously advances in thread, the connecting disk 51 can be pushed to rotate through the abutting surface 11. In order to improve the stability of the connecting disk 51, two driving rods 91 are symmetrically arranged on the connecting seat 4, and two driving grooves 10 are correspondingly arranged. The two driving rods 91 rotate synchronously to better drive the connecting disk 51 to rotate.

[0049] Further, see Figure 4 and Figure 7 An extension seat 12 is fixed to the lower end of the prefabricated component 2, and the extension seat 12 can be inserted into the receiving groove 8, and the lower end surface of the extension seat 12 can abut against the surface of the connecting plate 51. The first connecting column 521 extends out of the lower end surface of the extension seat 12. The symmetrical side walls of the extension seat 12 are provided with two sliding grooves 13, and the sliding grooves 13 are arranged horizontally. A plug-in block 14 is slidably arranged in the sliding groove 13, and a slot 15 is provided on the inner wall of the receiving groove 8. A linkage member 16 is also installed on the extension seat 12. When the connecting plate 51 rotates, the connecting plate 51 drives the plug-in block 14 to slide through the linkage member 16, and the end of the plug-in block 14 is inserted into the slot 15, thereby connecting the extension seat 12 and the connecting seat 4 together, thereby improving the stability during connection.

[0050] Reference Figure 6 and Figure 7The extension seat 12 is provided with a slot 17, which is connected to the lower end surface of the extension seat 12. The linkage member 16 includes a linkage rod 161 that is slidably connected to the slot 17 and a spring 162 installed on the inner top surface of the upper end of the slot 17, and the lower end of the spring 162 is connected to the upper end surface of the linkage rod 161. The slot 17 is connected to the end of the sliding slot 13, and the end of the plug-in block 14 can abut against the side wall of the linkage rod 161. When the linkage rod 161 moves upward, it can push the plug-in block 14 to slide in the sliding slot 13, so that the plug-in block 14 is plugged into the slot 15. In order to facilitate the linkage rod 161 to push the plug-in block 14 to slide, one end of the sliding slot 13 and the slot 17 is a flared structure, and the side wall of the linkage rod 161 is provided with a convex point. When the linkage rod 161 slides upward, the spring 162 is compressed and pushes the plug-in block 14 to slide through the convex point.

[0051] The upper surface of the connecting plate 51 is provided with an abutting groove 18, and the bottom surface of the abutting groove 18 is inclined, that is, the depth of the abutting groove 18 is from shallow to deep. The extension seat 12 is inserted into the receiving groove 8, and the linkage rod 161 can be inserted into the deeper part of the abutting groove 18. When the connecting plate 51 rotates, the bottom surface of the abutting groove 18 abuts against the lower end of the linkage rod 161 and pushes the linkage rod 161 to slide upward.

[0052] In a further embodiment, referring to Figure 4 and Figure 5 In order to further improve the strength of the connection of the prefabricated component 2, a first bending rib 20 is symmetrically fixed to the lower end of the prefabricated component 2, and a second bending rib 21 is symmetrically fixed to the upper end of the prefabricated component 2. The first bending rib 20 and the second bending rib 21 are U-shaped structures. A connecting cavity 19 is opened on both sides of the connecting seat 4. When the prefabricated component 2 and the connecting seat 4 are connected, the first bending rib 20 and the second bending rib 21 can pass through the surface of the extension seat 12 and extend into the connecting cavity 19. The ends of the first bending rib 20 and the second bending rib 21 can be surrounded to form a circular structure. Figure 8 A through slot 22 is provided on the connecting seat 4, and a through rod 23 passing through the through slot 22 is horizontally provided on the connecting seat 4. The inner walls of the ends of the first bending rib 20 and the second bending rib 21 abut against the outer wall of the through rod 23, thereby connecting the relative first bending rib 20 and the second bending rib 21 together.

[0053] The outer walls at both ends of the through rod 23 are also threadedly connected with locking blocks 24, and the first curved rib 20 and the second curved rib 21 are located between the two locking blocks 24. The two locking blocks 24 can be pressed against the outer wall of the first curved rib 20 or the second curved rib 21, so that the first curved rib 20 and the second curved rib 21 are in a taut state. When the first curved rib 20 is located at the outermost side, the locking block 24 is pressed against the first curved rib 20, and when the second curved rib 21 is located at the outermost side, the locking block 24 is pressed against the second curved rib 21.

[0054] In a further embodiment, the inner wall of the receiving groove 8 is provided with a mounting groove 25, and a limiting block 26 is provided in the mounting groove 25, and the limiting block 26 can slide in the mounting groove 25. Two plug blocks 27 are fixed to the side of the limiting block 26 facing the inner cavity of the receiving groove 8, and the plug blocks 27 are distributed up and down. The side walls of the extension seat 12 and the connecting plate 51 are provided with limiting holes 28. When the connecting plate 51 and the first connecting member 52 and the second connecting member 53 are connected, the limiting holes 28 and the plug blocks 27 correspond to each other one by one. When the penetration rod 23 passes through the penetration groove 22, the penetration rod 23 can push the limiting block 26 to slide, so that the plug block 27 will be inserted into the limiting hole 28. Under the action of the limiting block 26 and the plug block 27, the extension seat 12 and the connecting plate 51 can be connected together, further improving the stability of the connection.

[0055] An extension rod 29 is fixed to the side of the limit block 26 away from the insert block 27. The extension rod 29 passes through the connection seat 4 and extends into the insertion slot 22. At this time, the insert block 27 is received in the installation slot 25, and does not affect the extension seat 12 being inserted into the receiving slot 8. One end of the extension rod 29 in the insertion slot 22 is a tapered structure. When the penetration rod 23 passes through the insertion slot 22, it can push the extension rod 29 to slide, thereby causing the limit block 26 to slide and the insert block 27 to be inserted into the limit hole 28.

[0056] Example 2

[0057] A construction method of an anti-seepage wall of embodiment 1 comprises the following steps:

[0058] (1) Measure and locate, and use a TRD slotting machine to form slots. When forming slots, first cut longitudinally to form slots, and then push them horizontally to form slots. During the slotting process, inject solidifying liquid into the bottom of the cutting box to mix it with the in-situ soil to form a cement continuous wall of equal thickness;

[0059] (2) A positioning frame is arranged at the upper end of the trough body, and the prefabricated component 2 is lifted by the lifting equipment and inserted into the trough body through the positioning frame. After being inserted to a certain depth, the upper end of the prefabricated component 2 is positioned by the positioning frame, and then another prefabricated component 2 is lifted and connected to the prefabricated component 2 fixed on the positioning frame through the connecting structure 3, and then the prefabricated component 2 is continuously lowered;

[0060] (3) When the construction of the current construction section is completed, the above steps are repeated again to install the prefabricated components 2 in the horizontal direction. The adjacent prefabricated components 2 in the horizontal direction are guided by the mortise and tenon structure until the construction of the entire anti-seepage wall is completed.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-seepage wall, characterized in that: The invention comprises a cement-soil continuous wall (1), a prefabricated component (2) arranged in the cement-soil continuous wall (1), and a connection structure (3) for connecting two upper and lower adjacent prefabricated components (2); the connection structure (3) comprises a connection seat (4) welded to the end of the prefabricated component (2) and an anti-pullout component (5); the anti-pullout component (5) comprises a connection plate (51), a first connection member (52) arranged at the lower end of the prefabricated component (2), and a second connection member (53) arranged at the upper end of the prefabricated component (2); the connection plate (51) is provided with a first limiting groove (6) matched with the first connection member (52), and a second limiting groove matched with the second connection member (53). (7), a receiving groove (8) is provided on the connecting seat (4), the connecting disk (51) is located in the receiving groove (8), the second connecting member (53) passes through the connecting seat (4) and extends into the receiving groove (8) to be connected with the second limiting groove (7), and the first connecting member (52) extends into the receiving groove (8) to be connected with the first limiting groove (6); a driving member (9) is provided on the side wall of the connecting seat (4), and the driving member (9) can drive the connecting disk (51) to rotate in the receiving groove (8), so that the first connecting member (52) is engaged with the first limiting groove (6), and the second connecting member (53) is engaged with the second limiting groove (7).

2. The anti-seepage wall according to claim 1, characterized in that: The first connecting member (52) comprises a first connecting column (521) and a first limiting block (522) arranged at the end of the first connecting column (521); the second connecting member (53) comprises a second connecting column (531) and a second limiting block (532) arranged at the end of the second connecting column (531); the first limiting groove (6) is arranged on the lower surface of the connecting disk (51); the second limiting groove (7) is arranged on the upper surface of the connecting disk (51); the first limiting groove (6) comprises a first limiting groove (7) which passes through the connecting disk (51) and is used for the second limiting groove (7) to pass through the first limiting groove (6) and ... A through groove (61) through which a limiting block (522) passes, a clearance groove (62) connected to the through groove (61) and used for the first connecting column (521) to slide, and a clamping groove (63) used to accommodate the first limiting block (522); when the connecting plate (51) rotates, the first connecting column (521) can slide into the clearance groove (62) and the first limiting block (522) can be clamped in the clamping groove (63); the second limiting groove (7) has the same structure as the first limiting groove (6) and cooperates with the second connecting member (53).

3. The anti-seepage wall according to claim 2, characterized in that: The driving member (9) comprises a driving rod (91) threadedly connected to the connecting seat (4); a driving groove (10) is provided on the side wall of the connecting disk (51); an abutment surface (11) is obliquely provided on the inner wall of the driving groove (10); an end of the driving rod (91) extends into the driving groove (10) and abuts against the abutment surface (11); when the driving rod (91) moves in a direction approaching the driving groove (10), the driving rod (91) can push the connecting disk (51) to rotate via the abutment surface (11).

4. The anti-seepage wall according to claim 2, characterized in that: An extension seat (12) is provided at the lower end of the prefabricated component (2), and the extension seat (12) can be inserted into the receiving groove (8). A sliding groove (13) is provided on the side wall of the extension seat (12), and a plug-in block (14) is slidably provided in the sliding groove (13). A slot (15) for plugging the plug-in block (14) is provided on the inner wall of the receiving groove (8). A linkage member (16) is provided in the extension seat (12), and when the connecting plate (51) rotates, the linkage member (16) can be pressed by the connecting plate (51) to drive the plug-in block (14) to slide and be plugged into the slot (15).

5. The anti-seepage wall according to claim 4, characterized in that: The extension seat (12) is provided with a slot (17), and the slot (17) is connected to the sliding slot (13). The linkage member (16) includes a linkage rod (161) slidably connected to the slot (17) and a spring (162) arranged in the slot (17). The upper surface of the connecting plate (51) is provided with an abutment slot (18), and the bottom surface of the abutment slot (18) is inclined. The end of the linkage rod (161) abuts against the abutment slot (18). When the connecting plate (51) rotates, the linkage rod (161) is pressed by the bottom surface of the abutment slot (18) and slides upward into the slot (17). The plug-in block (14) is pushed by the side wall of the linkage rod (161) and inserted into the slot (15).

6. The anti-seepage wall according to claim 4, characterized in that: The connection seat (4) is provided with connection cavities (19) on both sides, the lower end of the prefabricated component (2) is provided with a first bending rib (20), and the upper end of the prefabricated component (2) is provided with a second bending rib (21); when the prefabricated component (2) and the connection seat (4) are connected, the first bending rib (20) and the second bending rib (21) are inserted into the connection cavity (19), the connection seat (4) is provided with a through rod (23), and the connection seat (4) is provided with a through rod (23). A penetration groove (22) is provided for the penetration of the penetration rod (23), the penetration rod (23) penetrates through the ends of the first bending rib (20) and the second bending rib (21), and the outer walls at both ends of the penetration rod (23) are threadedly connected with locking blocks (24), the first bending rib (20) and the second bending rib (21) are located between the two locking blocks (24), and the locking blocks (24) can be tightly pressed against the side walls of the first bending rib (20) or the second bending rib (21).

7. The anti-seepage wall according to claim 6, characterized in that: The inner wall of the accommodating groove (8) is provided with a mounting groove (25), a limiting block (26) is arranged in the mounting groove (25), two plug blocks (27) are arranged on the limiting block (26), and the side walls of the connecting plate (51) and the extending seat (12) are provided with limiting holes (28) for plugging the plug blocks (27); the limiting block (26) and the penetration rod (23) are linked to each other, and when the penetration rod (23) passes through the connecting seat (4), the limiting block (26) slides in the mounting groove (25) so that the plug blocks (27) are plugged into the limiting holes (28).

8. The anti-seepage wall according to claim 7, characterized in that: An extension rod (29) is provided on a side of the limit block (26) away from the insertion block (27), and one end of the extension rod (29) away from the limit block (26) extends to the penetration groove (22), and when the penetration rod (23) penetrates the penetration groove (22), the extension rod (29) is pressed by the penetration rod (23) and slides in a direction away from the penetration groove (22).

9. A construction method for an anti-seepage wall according to any one of claims 1 to 8, characterized in that: The steps include: (1) Measure and locate, and use trenching equipment to form trenches. Inject solidifying liquid into the bottom of the cutting box to mix it with the in-situ soil to form a cement continuous wall of equal thickness; (2) a positioning frame is arranged at the upper end of the trough body, a prefabricated component (2) is lifted by a lifting device, and inserted into the trough body through the positioning frame, and then the prefabricated component (2) is positioned by the positioning frame, another prefabricated component (2) is lifted, and connected to the prefabricated component (2) fixed on the positioning frame through the connecting structure (3), and then the prefabricated component (2) is continuously lowered; (3) When the construction of the current construction section is completed, the above steps are repeated in a cycle until the construction of the entire anti-seepage wall is completed.

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