Underground vertical diaphragm wall HDPE (high-density polyethylene) film connecting lock catch assembly

Abstract

The invention relates to an underground vertical diaphragm wall HDPE (high-density polyethylene) film connecting lock catch assembly, an underground vertical diaphragm wall comprises a plurality of diaphragm wall bodies and wall body connecting sections between the diaphragm wall bodies, the lock catch assembly comprises a concentric-square-shaped lock catch and an inner lock catch, the concentric-square-shaped lock catch comprises a lock hole and a welding wing plate, and a notch is formed in one side of the lock hole; the inner lock catch comprises a lock ring used for being embedded into the lock hole and a side wing plate which is arranged on one side of the lock ring and can stretch out of the lock hole from the notch. At least two concentric-square-shaped lock catches are poured into one anti-seepage wall body, and every two adjacent welding wing plates in the same anti-seepage wall body are connected through an HDPE film; an inner lock catch is embedded in the concentric-square-shaped lock catch, side wing plates of the inner lock catch extend out of the end face of the anti-seepage wall body, the extending parts are poured into the wall body connecting section, and the two side wing plates are connected through an HDPE film. Therefore, the longitudinal lap joint of the HDPE films on different wall bodies is completed under the condition that different wall bodies are formed in the groove jumping construction, and the effective anti-seepage barrier effect is achieved.

Description

Technical Field

[0001] The invention relates to a locking component for connecting an underground vertical anti-seepage wall and a HDPE film, belonging to the technical field of environmentally friendly anti-seepage walls. Background Art

[0002] HDPE membrane is widely used in the anti-seepage barrier of newly built landfills, solid waste landfills, tailings ponds, and sewage treatment plants. New structures are laid horizontally during excavation, and hot-melt welding is convenient for construction. However, when used in vertical anti-seepage engineering applications, the HDPE membrane is difficult to overlap when laid vertically and the verticality is difficult to control. Since segmented skipping construction is often used during wall construction, the overlap of the HDPE membrane on the two walls is more difficult. In addition, the anti-seepage wall and the wall connecting section are cast separately during skipping construction, which further increases the difficulty of overlapping the HDPE membrane on the two walls.

[0003] Prior art, such as Patent 202321954182.7 discloses a sealing connection structure of a HDPE membrane flexible vertical anti-seepage wall; although this solution solves the problem of sealed overlap of the HDPE membrane, during the actual construction process, when the wall material is poured in, the lock may be filled with the wall material, so it is not suitable for overlapping the HDPE membrane between two separately cast wall sections.

[0004] Patent 202222708579.X discloses a joint box device for a HDPE membrane composite flexible underground anti-seepage wall, but the device and the connected HDPE membrane are both located inside the wall, and there is backfill on both sides of the HDPE membrane, so the progress cannot be completely consistent, which will cause pressure imbalance on both sides of the membrane. There is a pressure difference, which will cause the membrane to be S-shaped and cannot ensure verticality, thereby affecting the connection of the lock. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a connection lock component suitable for longitudinally overlapping HDPE films on different walls.

[0006] In order to achieve the above-mentioned purpose, the technical solution proposed by the present invention is: a locking buckle assembly for connecting an underground vertical anti-seepage wall and a HDPE membrane, wherein the underground vertical anti-seepage wall comprises a plurality of anti-seepage wall bodies, a wall connecting section is provided between adjacent anti-seepage walls, and the outer wall surface of the wall connecting section is different from the outer wall surfaces of the anti-seepage walls on both sides; the locking buckle assembly comprises a U-shaped locking buckle, an inner locking buckle and a slurry stop valve, the U-shaped locking buckle comprises a locking buckle body provided with a locking hole and welding wing plates arranged on both sides of one end of the locking buckle body, and a notch communicating with the locking hole is provided on one side of the locking buckle body; the inner locking buckle comprises a locking ring for embedding in the locking hole and a side wing plate arranged on one side of the locking ring and extending out of the locking hole from the notch; At least two U-shaped lock buckles are cast in an anti-seepage wall, the outer side surface of the welded wing plate coincides with the outer wall surface of the anti-seepage wall, and the adjacent welded wing plates of two adjacent U-shaped lock buckles in the same anti-seepage wall are connected by an HDPE membrane; the U-shaped lock buckle located at the end of the anti-seepage wall is embedded with an inner lock buckle, the side wing plate of the inner lock buckle extends from the end surface of the anti-seepage wall, the extended part is cast in the wall connection section, and the outer side surface of the side wing plate coincides with the outer wall surface of the wall connection section, and the side wing plates at both ends of the wall connection section are connected by an HDPE membrane; The slurry stopping valve includes a slurry stopping part, an embedded part, and a connecting part for connecting the slurry stopping part and the embedded part. The embedded part is embedded in the lock hole and matches the size of the lock hole, the connecting part is embedded in the slot and matches the size of the slot, the slurry stopping part is located outside the lock body and one end abuts the lock body, and the other section extends to the end of the anti-seepage wall.

[0007] A further design of the above technical solution is as follows: an inclinometer guide groove is provided on the edge of the lock hole, the inclinometer guide groove is arranged along the vertical direction, and the arrangement direction of the inclinometer guide groove is parallel to the outer side surfaces of the welding wing plate and the side wing plate.

[0008] The outer sides of the welding wing plate and the side wing plate are parallel to each other.

[0009] The slot width matches the side wing plate thickness.

[0010] After the lock ring is embedded in the lock hole, grouting is poured into the lock hole to fix the U-shaped lock buckle and the inner lock buckle.

[0011] The U-shaped lock buckle and the inner lock buckle are made of PE material, and the slurry stop valve is made of steel.

[0012] A method for constructing an underground vertical anti-seepage wall using a HDPE membrane connecting locking assembly, comprising the following steps: A wall groove for pouring the anti-seepage wall is excavated on the ground, and a distance for setting the wall connection section is reserved between adjacent wall grooves; Weld the corresponding HDPE film on the U-shaped lock buckle in the same anti-seepage wall, embed the slurry stop valve on the U-shaped lock buckle, and then lower the U-shaped lock buckle and the HDPE film into the wall groove together; Grouting the anti-seepage wall into the wall groove, and taking out the grout stop valve after the anti-seepage wall is initially formed, and a grout stop space for placing the inner locking buckle side wing plate is formed at the grout stop part of the grout stop valve; Another section of anti-seepage wall is constructed by the above method; A connection groove for pouring a wall connection section is excavated between the wall grooves of adjacent anti-seepage walls, and the connection groove is communicated with the grouting space; Weld the HDPE film on the two inner lock buckles, embed the two inner lock buckles into the corresponding U-shaped lock buckles, and grout the lock holes. The HDPE film connected by the inner lock buckles is in the connection groove; Grout the wall connection section into the connection groove and the stop grout space.

[0013] The beneficial effects of the present invention are: The present invention adopts mutually cooperating U-shaped lock buckles and inner lock buckles to form welded wing plates and side wing plates which are not in the same plane. The welded wing plates and side wing plates are respectively used to set the HDPE membrane on the outer wall of the anti-seepage wall and the wall connection section, thereby solving the problem of completing the longitudinal overlap of the HDPE membrane on two sections of walls with different surfaces when different surfaces of the wall are formed during the skipping construction, and playing an effective anti-seepage barrier role. At the same time, the U-shaped lock buckle and the inner lock buckle are simple to connect and can be respectively placed in the two end walls formed successively. Therefore, the two HDPE membranes can be placed in the anti-seepage wall and the wall connection section successively and overlapped, which is fully adapted to the process of the anti-seepage wall skipping construction.

[0014] The invention provides an inclination measuring guide groove on the U-shaped lock buckle, and the verticality of the inclination measuring guide groove is measured to ensure the verticality of the HDPE film.

[0015] The present invention adheres the HDPE film to the wall surface and only casts the wall body on one side of the HDPE film, which does not cause a pressure difference on both sides of the film and is beneficial to maintaining the verticality of the HDPE film and the connection stability of the lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the U-shaped lock structure in the present invention; Figure 2 It is a schematic diagram of the inner lock structure; Figure 3 This is a side view of the stop valve; Figure 4 This is a schematic diagram of the overlap between the lock buckle and the HDPE film; In the figure: 1-U-shaped lock buckle, 11-lock buckle body, 111-lock hole, 112-slot, 113-inclinometer guide groove, 12-welded wing plate, 2-inner lock buckle, 21-locking ring, 22-side wing plate, 3-slurry stop valve, 31-slurry stop part, 32-connecting part, 33-embedded part, 4-HDPE membrane, 5-anti-seepage wall, 6-wall connecting section. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. Embodiment 1

[0018] The underground vertical anti-seepage wall HDPE membrane connecting lock buckle assembly of this embodiment includes a Chinese-shaped lock buckle 1 and an inner lock buckle 2, such as Figure 1As shown, the U-shaped lock buckle 1 includes a lock buckle body 11 with a lock hole 111 and welded wing plates 12 arranged on both sides of one end of the lock buckle body 11, and the welded wing plates 12 on both sides are symmetrically arranged relative to the lock buckle body 11. A notch 112 communicating with the lock hole 111 is arranged on one side of the lock buckle body 11, and two incline guide grooves 113 are opened on the edge of the lock hole 111, and the incline guide grooves 113 are arranged along the vertical direction; Figure 2 As shown, the inner lock buckle 2 includes a lock ring 21 for being embedded in the lock hole 111 and a side wing plate 22 arranged on one side of the lock ring 21. The thickness of the side wing plate 22 matches the width of the slot 112. When the lock ring 21 is embedded in the lock hole 111, the side wing plate 22 can extend from the slot 112. The outer side surfaces of the welding wing plate 12 and the side wing plate 22 are parallel to the setting direction of the inclinometer guide groove 113. When the inclinometer guide groove 113 is vertically set, the outer side surfaces of the welding wing plate 12 and the side wing plate 22 are vertically set. The radial direction of the slot 112 corresponding to the lock hole 111 is parallel to the setting direction of the welding wing plate 12, so that the outer side surfaces of the welding wing plate 12 and the side wing plate 22 can be parallel to each other.

[0019] like Figure 3 As shown, this embodiment is also provided with a slurry stop valve 3, which includes a slurry stop portion 31, an embedding portion 33, and a connecting portion 32 for connecting the slurry stop portion and the embedding portion. The embedding portion 33 is used to be embedded in the lock hole and matches the size of the lock hole. The connecting portion 32 is used to be embedded in the notch 113 and the thickness of the device matches the size of the width of the notch 112. The slurry stop portion 31 is located outside the lock buckle body 11 and one end abuts against the lock buckle body 11, and the other section extends to the end of the anti-seepage wall. The slurry stop valve 3 is embedded in the U-shaped lock buckle 1. On the one hand, it plays a sealing role to prevent mud and wall material slurry from entering the lock buckle from the notch when the wall is formed. On the other hand, the slurry stop portion 31 can reserve space for the setting of the side wing plate 22. After the anti-seepage wall is preformed, the slurry stop valve 3 is taken out, and then the inner lock buckle 2 is placed.

[0020] Combination Figure 4 As shown, the underground vertical anti-seepage wall of this embodiment adopts a segmented skip-groove construction method to form a number of anti-seepage walls 5, and a wall connecting section 6 is provided between adjacent anti-seepage walls 5. The thickness of the wall connecting section 6 is less than the thickness of the anti-seepage wall 5. Therefore, a groove structure is formed between the outer wall surface of the wall connecting section 6 and the anti-seepage walls on both sides, so that the outer wall surface of the wall connecting section 6 and the outer wall surface of the anti-seepage wall 5 are not in the same plane, so the HDPE membrane 4 arranged on the two wall surfaces needs to be longitudinally overlapped on different surfaces.

[0021] A U-shaped lock buckle 1 is cast at each end of the anti-seepage wall 5, and a welded wing plate 21 of the U-shaped lock buckle 1 extends to the end face of the anti-seepage wall 5, and the outer side surface of the welded wing plate 21 coincides with the outer wall surface of the anti-seepage wall 5 in the same plane. The outer sides of the adjacent welded wing plates 21 of the two U-shaped lock buckles 1 are welded with the same HDPE film 4, which can make the HDPE film as close to the wall as possible, avoiding uneven slurry pressure on both sides of the HDPE film when the wall is formed, which causes deformation of the HDPE film and is beneficial to maintaining the verticality of the HDPE film.

[0022] The inner lock buckle 2 is embedded in the two U-shaped lock buckles 1, and grouting is performed in the lock hole 111, so that the grouting fills the entire lock buckle, fixes the U-shaped lock buckle 1 and the inner lock buckle 2, and plays a sealing role. Since the U-shaped lock buckle 1 is located at the end of the anti-seepage wall 5 and the notch is also facing the end, the side wing plate 22 of the inner lock buckle 1 can extend from the end face of the anti-seepage wall 5, and then the wall connection section 6 is cast based on the outer wall surface of the two side wing plates 22 extending from the adjacent anti-seepage wall 5, so that the outer side surface of the side wing plate 22 coincides with the outer wall surface of the wall connection section 6, and the outer side surfaces of the two side wing plates 22 are welded with the same HDPE film, which can also make the HDPE film fit the wall.

[0023] When the anti-seepage wall of this embodiment is constructed by skipping, a wall groove for pouring the anti-seepage wall is first excavated on the ground, and a distance for setting the wall connection section is reserved between adjacent wall grooves; The corresponding HDPE film 4 is welded on the U-shaped lock buckle 1 in the same anti-seepage wall, and the slurry stop valve 3 is embedded in the U-shaped lock buckle 1, and then the U-shaped lock buckle 1 and the HDPE film 4 are lowered into the wall groove together; Grouting is performed into the wall groove to cast the anti-seepage wall. At this time, since the HDPE film 4 is attached to the inner wall of one side of the wall groove, the slurry is only on one side of the HDPE film 4 during pouring, and the other side of the HDPE film 4 is restricted by the inner wall of the wall groove, which will not cause uneven slurry pressure on both sides of the HDPE film, and at the same time, the verticality and flatness of the HDPE film 4 can be guaranteed; After the anti-seepage wall is initially formed, the stop slurry valve is taken out, and a stop slurry space for placing the inner locking side wing plate is formed at the stop slurry portion of the stop slurry valve; Another section of anti-seepage wall is constructed using the above scheme; A connection groove for pouring a wall connection section is excavated between the wall grooves of adjacent anti-seepage walls, and the connection groove is communicated with the grouting space; Weld the HDPE film on the two inner lock buckles, embed the two inner lock buckles into the corresponding U-shaped lock buckles, and grout in the lock holes. The HDPE film connected by the inner lock buckles is in the connecting groove and fits with the inner wall of one side of the connecting groove. Similarly, the verticality and flatness of the HDPE film 4 can be guaranteed; Finally, the wall connection section is grouting poured into the connection groove and the stop grouting space to form a complete anti-seepage wall.

[0024] In this embodiment, the welded wing plates 21 and the side wing plates 22 that are not in the same plane are formed by the embedded U-shaped lock buckle 1 and the inner lock buckle 2. The welded wing plates 21 and the side wing plates 22 are respectively used to lay the HDPE membrane 4 on the outer wall surfaces of the anti-seepage wall 5 and the wall connection section 6, thereby solving the problem of completing the longitudinal overlap of the HDPE membrane 4 on two sections of walls with different surfaces when different surfaces of the wall are formed during the jump-slot construction, effectively providing anti-seepage barrier for the wall surface, and at the same time ensuring the verticality of the HDPE membrane 4 by measuring the verticality of the inclinometer guide groove 113; due to the connection structure of the U-shaped lock buckle 1 and the inner lock buckle 2, the HDPE membranes 4 respectively connected to the two can be placed in the wall one after another, which is suitable for walls that are cast one after another during the jump-slot construction.

[0025] In this embodiment, the U-shaped lock buckle 1 and the inner lock buckle 2 are made of PE material, which is convenient for hot-melt welding with the HDPE film 4, and the slurry stop valve is made of steel, which has sufficient hardness to prevent deformation. Embodiment 2

[0026] The structure of the HDPE membrane connecting lock assembly of the underground vertical anti-seepage wall of this embodiment is basically the same as that of the first embodiment, except that, in this embodiment, the anti-seepage wall 5 is longer, so the number of U-shaped locks 1 is greater than two, and only the two U-shaped locks 1 located at the ends are connected to the inner lock 2; the outer sides of the adjacent welded wing plates 21 of the two adjacent U-shaped locks 1 are welded with the same HDPE membrane 4, and at least two HDPE membranes 4 are arranged on the outer wall surface of the same anti-seepage wall 5. Since the outer side surfaces of the welded wing plates 21 coincide with the outer wall surface of the anti-seepage wall 5, the multiple HDPE membranes 4 are also located in the same plane, thereby ensuring the flatness of the wall surface, and the HDPE membrane 4 and the U-shaped locks 1 jointly undertake the anti-seepage barrier work of the wall surface.

[0027] The technical solutions of the present invention are not limited to the above-mentioned embodiments, and any technical solutions obtained by equivalent replacement methods fall within the scope of protection required by the present invention.

Claims

1. An underground vertical anti-seepage wall HDPE membrane connection lock assembly, the underground vertical anti-seepage wall comprises a plurality of anti-seepage walls, a wall connection section is provided between adjacent anti-seepage walls, and the outer wall surface of the wall connection section is different from the outer wall surface of the anti-seepage walls on both sides; characterized in that: The lock assembly comprises a U-shaped lock, an inner lock and a slurry stop valve, wherein the U-shaped lock comprises a lock body provided with a lock hole and welded wing plates arranged at both sides of one end of the lock body, and a notch communicating with the lock hole is arranged on one side of the lock body; the inner lock comprises a lock ring for embedding in the lock hole and a side wing plate arranged on one side of the lock ring and extending from the notch to the lock hole; At least two U-shaped lock buckles are cast in an anti-seepage wall, the outer side surface of the welded wing plate coincides with the outer wall surface of the anti-seepage wall, and the adjacent welded wing plates of two adjacent U-shaped lock buckles in the same anti-seepage wall are connected by an HDPE membrane; the U-shaped lock buckle located at the end of the anti-seepage wall is embedded with an inner lock buckle, the side wing plate of the inner lock buckle extends from the end surface of the anti-seepage wall, the extended part is cast in the wall connection section, and the outer side surface of the side wing plate coincides with the outer wall surface of the wall connection section, and the side wing plates at both ends of the wall connection section are connected by an HDPE membrane; The slurry stopping valve includes a slurry stopping part, an embedded part, and a connecting part for connecting the slurry stopping part and the embedded part. The embedded part is embedded in the lock hole and matches the size of the lock hole, the connecting part is embedded in the slot and matches the size of the slot, the slurry stopping part is located outside the lock body and one end abuts the lock body, and the other section extends to the end of the anti-seepage wall.

2. According to claim 1, the underground vertical anti-seepage wall HDPE membrane connection lock assembly is characterized in that: An inclinometer guide groove is provided at the edge of the lock hole. The inclinometer guide groove is arranged in a vertical direction. The arrangement direction of the inclinometer guide groove is parallel to the outer side surfaces of the welding wing plate and the side wing plate.

3. The underground vertical anti-seepage wall HDPE membrane connection lock assembly according to claim 2, characterized in that: The outer sides of the welding wing plate and the side wing plate are parallel to each other.

4. The underground vertical anti-seepage wall HDPE membrane connection lock assembly according to claim 3, characterized in that: The slot width matches the side wing plate thickness.

5. The underground vertical anti-seepage wall HDPE membrane connection lock assembly according to claim 1, characterized in that: After the lock ring is inserted into the lock hole, grouting is poured into the lock hole to fix the U-shaped lock buckle and the inner lock buckle.

6. The underground vertical anti-seepage wall HDPE membrane connection lock assembly according to claim 5, characterized in that: The U-shaped lock buckle and the inner lock buckle are made of PE material, and the slurry stop valve is made of steel.

7. A method for constructing an anti-seepage wall using the HDPE membrane connection lock assembly for an underground vertical anti-seepage wall according to any one of claims 1 to 6, characterized in that: The steps include: A wall groove for pouring the anti-seepage wall is excavated on the ground, and a distance for setting the wall connection section is reserved between adjacent wall grooves; Weld the corresponding HDPE film on the U-shaped lock buckle in the same anti-seepage wall, embed the slurry stop valve on the U-shaped lock buckle, and then lower the U-shaped lock buckle and the HDPE film into the wall groove together; Grouting the anti-seepage wall into the wall groove, and taking out the grout stop valve after the anti-seepage wall is initially formed, and a grout stop space for placing the inner locking buckle side wing plate is formed at the grout stop part of the grout stop valve; Another section of anti-seepage wall is constructed by the above method; A connection groove for pouring a wall connection section is excavated between the wall grooves of adjacent anti-seepage walls, and the connection groove is communicated with the grouting space; Weld the HDPE film on the two inner lock buckles, embed the two inner lock buckles into the corresponding U-shaped lock buckles, and grout into the lock holes. The HDPE film connected by the inner lock buckles is in the connection groove; Grout the wall connection section into the connection groove and the stop grout space.

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