HDPE film vertical laying positioning device and vertical laying positioning method

Abstract

The application belongs to the technical field of anti-seepage engineering, and particularly discloses a vertical laying and positioning device and method for HDPE film. The positioning component of the device is provided with a receiving cavity on the top of the positioning component, which can be inserted into the connecting component, and the HDPE film is fixed on the top end of the connecting component. The two side walls of the positioning component are provided with clamping holes which are communicated with the receiving cavity, and the clamping holes are slidably provided with clamping blocks, and the inner side wall of the clamping block is a slope. The connecting component is a reverse trapezoidal structure, and the lower two side walls of the connecting component are attached to the slope of the clamping block. The bottom end of the lower two side walls of the connecting component is provided with a rotating block groove, the bottom end of the rotating block groove is provided with a rotating shaft, the rotating shaft is rotatably connected with a rotating block which can be received into the rotating block groove, and the rotating block can be extended below the clamping block when the rotating block is unfolded. The method comprises the steps of first piece installation, film fixing, first piece hoisting, first piece fixing, subsequent installation, subsequent hoisting, subsequent fixing and subsequent laying. The application has the characteristics of simple structure, convenient laying, stable and reliable connection, accurate positioning and good anti-seepage effect.

Description

Technical Field

[0001] This invention belongs to the field of anti-seepage engineering technology, specifically relating to a vertical laying and positioning device and method for HDPE membrane that is simple in structure, convenient to lay, stable and reliable in connection, accurate in positioning, and has good anti-seepage effect. Background Technology

[0002] High-density polyethylene (HDPE) membranes, due to their superior impermeability and durability, are widely used in underground seepage prevention projects such as landfills, industrial waste treatment plants, and reservoirs, becoming an important means of preventing groundwater pollution and protecting the soil environment. In these applications, HDPE membranes typically need to be laid vertically to form an effective seepage barrier. However, in actual construction, the existing vertical laying of HDPE membranes often faces the following challenges:

[0003] 1. Presence of sharp objects on the trench wall: During the vertical laying process, there may be sharp stones or other hard objects on the trench wall of the rectangular trench section. These sharp objects may tear the HDPE membrane, thereby damaging the seepage prevention performance after laying.

[0004] 2. Inaccurate membrane positioning: According to design requirements, the HDPE membrane needs to be accurately positioned in the center of the rectangular trench section to ensure uniform stress and optimal seepage prevention. However, due to construction limitations and complex processes, the membrane material is prone to deviating from the center of the rectangular trench section during placement, thus affecting the seepage prevention effect after installation.

[0005] 3. Buoyancy Issue: After the HDPE membrane is placed into the rectangular trench section, bentonite is usually filled on both sides of the membrane to protect it from being torn by sharp objects. However, during the filling process, the bentonite and groundwater will generate buoyancy, which can easily cause the HDPE membrane to float, resulting in the HDPE membrane being pulled up and affecting accurate positioning and the seepage prevention effect after laying.

[0006] The aforementioned problems severely affect the effective vertical laying and service life of HDPE membranes. Therefore, existing technologies employ a method of forming a plate tip using solid inverted trapezoidal steel sections, with positioning steel plates fixed on both sides of the upper part of the tip. Two vertically positioned and parallel steel plates are then connected to the two positioning steel plates. A steel support connected to the two steel plates is then slidably installed between them. Finally, a steel top plate is fixed to the top of the steel support, forming a vertical laying device. During laying, the plate tip is inserted into the soil, and the two parallel steel plates and the steel support are inserted into the positioning steel plates of the tip, with the steel support positioned between the two steel plates. The steel top plate is then fixed to the top of the steel support. Subsequently, the steel plate, steel support, and plate tip are driven into the ground to the designed depth using hammering or static pressure. Finally, the steel support is pulled out, and the HDPE membrane is lowered between the two steel plates to complete the laying process. Although the aforementioned laying device and method protect the HDPE membrane with two steel plates, preventing damage, ensuring accurate positioning, and preventing it from being pulled up during laying, the need for hammering or static pressure instead of grooving makes the device prone to tilting or even breaking during laying. Not only is the positioning accuracy of the HDPE membrane low, making it only suitable for shallow trench vertical seepage prevention construction, but the need for parallel steel plates on both sides for protection, which cannot be reused, also results in higher construction costs. Furthermore, since the HDPE membrane is directly lowered between the two steel plates, it is easy to make it difficult for the HDPE membrane to touch the bottom, and it is inconvenient to connect adjacent membranes, thus making it difficult to guarantee the seepage prevention effect. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention develops a vertical laying and positioning device for HDPE membranes that is simple in structure, convenient to lay, has stable and reliable connection, accurate positioning, and good anti-seepage effect. It also provides a method for vertical laying and positioning of HDPE membranes.

[0008] The HDPE film vertical laying positioning device of the present invention is implemented as follows: it includes a positioning component, a connecting component, and an HDPE film. The positioning component is arranged horizontally and has a receiving cavity at the top. The connecting component has a long strip structure and its lower part can be inserted into the receiving cavity. The bottom of the HDPE film is fixed to the top of the connecting component.

[0009] The positioning component has at least two rectangular locking holes spaced apart on its two side walls along the length direction. The locking holes are connected to the receiving cavity. A locking block is slidably disposed in the locking hole. The inner side wall of the locking block facing the receiving cavity is an inclined surface that gradually slopes outward from top to bottom.

[0010] The lower cross-section of the connecting component is an inverted trapezoidal structure. The lower two side walls of the connecting component are respectively attached to the inner inclined surfaces of the corresponding clamping blocks. At least two outwardly inclined rotating block grooves are provided at intervals along the length direction near the bottom of the lower two side walls of the connecting component. The rotating block grooves correspond to the positions of the corresponding clamping holes. A rotating shaft is provided near the bottom of the connecting component in the rotating block groove. A rotating block that can be housed in the rotating block groove is rotatably connected to the rotating shaft. When the rotating block is unfolded around the rotating shaft, the end away from the rotating shaft extends to the bottom of the corresponding clamping block.

[0011] Furthermore, the cross-section of the receiving cavity is a rectangular structure with an open top, and the clamping hole is located above the bottom end of the receiving cavity. The height difference between the bottom end of the clamping hole and the bottom end of the receiving cavity is greater than the maximum distance from the axis of the rotating shaft to the end of the rotating block away from the rotating shaft.

[0012] Furthermore, when the rotating block is housed in the corresponding rotating block slot around the rotating shaft, the outer surface of the rotating block is not higher than the lower corresponding side wall surface of the connecting component.

[0013] Furthermore, the clamping block is inclined at an angle greater than 60° toward the inner wall of the receiving cavity, and the thickness of the clamping block is greater than the depth of the clamping hole.

[0014] Furthermore, the inner wall of the clamping block facing the receiving cavity and the outer wall away from it are both inclined surfaces that gradually slope outward from top to bottom, and the middle cross-section of the connecting component is rectangular and is slidably connected to the receiving cavity.

[0015] Furthermore, the rotating block is fixedly provided with an outwardly extending abutment plate at the shaft connection end, which can abut against the bottom surface of the connecting component; the rotating block is provided with a return spring at the shaft connection, or the rotating block is provided with an elastic support block on the side of the rotating block facing the rotating block groove at the end away from the shaft.

[0016] Furthermore, the HDPE film is provided with latches extending along the height direction and at least open at the top at both ends. The latches at both ends of the HDPE film are provided with snaps extending along the height direction and the snaps at both ends are in opposite directions. The latches of two adjacent HDPE films can be interlocked and sealed.

[0017] Furthermore, the top of the connecting component is provided with a plurality of connecting rings spaced apart along the length direction, and the bottom of the HDPE film is fixedly connected to each connecting ring.

[0018] The HDPE membrane vertical laying and positioning method of the present invention is implemented as follows: based on the aforementioned HDPE membrane vertical laying and positioning device, it includes the steps of first piece installation, membrane fixing, first piece hoisting, first piece fixing, subsequent installation, subsequent hoisting, subsequent fixing, and subsequent laying. The specific contents of each step are as follows:

[0019] A. First piece installation: Place the positioning component at the bottom of the already constructed rectangular groove segment;

[0020] B. Membrane Fixing: The bottom of the HDPE membrane is fixedly connected to the top of the connecting component using a connecting ring;

[0021] C. First piece hoisting: Lower the HDPE film, which is fixed to the bottom of the connecting component, into the rectangular groove section, and then insert the lower part of the connecting component into the receiving cavity at the top of the positioning component with the assistance of the guide rod;

[0022] D. First piece fixing: Continue to lower the connecting component. The lower side wall of the connecting component is in contact with the inclined surface of the clamping block and pushes the clamping block to move outward along the clamping hole, so that the clamping block is away from the outside of the connecting component and engages with the groove wall of the rectangular groove section; at the same time, after the rotating block enters below the clamping block, the rotating block unfolds outward around the axis under the action of gravity, and the side of the rotating block away from the axis extends to the bottom of the corresponding clamping block, completing the laying of the HDPE film;

[0023] E. Subsequent installation: Place the next positioning component, and then repeat step B;

[0024] F. Subsequent hoisting: Lower the next HDPE film, which is fixed to the next connecting component at the bottom, into the rectangular groove section, and during the lowering process, make the latches of the next HDPE film engage from top to bottom in the adjacent latches of the previous HDPE film.

[0025] G. Subsequent fixing: Under the guidance of the latch, insert the lower part of the next connecting component into the receiving cavity at the top of the next positioning component, and make the clamping block of the next positioning component move away from the outside of the connecting component and engage with the groove wall of the rectangular groove segment. The rotating block of the next connecting component unfolds outward under the action of gravity and extends to the bottom of the corresponding clamping block, thus completing the laying of the next HDPE film.

[0026] H. Subsequent Laying: Repeat steps E to G to complete the subsequent laying of the HDPE membrane.

[0027] Furthermore, in steps D and G, the depth of the groove wall of the rectangular groove segment inserted into the outer side of the clamping block away from the connecting component is not less than 5cm; in steps D and G, after the HDPE membrane is laid, the HDPE membrane is tested for damage using a rapid electrical method.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. The vertical laying positioning device of the present invention, by lowering and inserting a connecting component with an HDPE film at the top into the receiving cavity and connecting it with the positioning component, can realize the precise positioning and rapid laying of HDPE film in a rectangular groove segment.

[0030] 2. The vertical laying positioning device of the present invention, by moving the inclined surface of the clamping block in the receiving cavity to move the connecting component downward, can push the clamping block in the clamping hole to move outward, so that the clamping block moves away from the outer side of the connecting component and engages with the groove wall of the rectangular groove segment. This enables the positioning component to automatically engage into the excavated rectangular groove segment, providing stable support for the positioning component, the connecting component inserted inside, and the HDPE membrane. It also ensures that the HDPE membrane will not shift due to external force during vertical laying, thus avoiding seepage failure caused by HDPE membrane displacement.

[0031] 3. The vertical laying positioning device of the present invention, when the bottom end of the connecting component moves down to the bottom end of the receiving cavity, the rotating block in the rotating block groove on both sides of the connecting component rotates and unfolds around the rotating axis under its own gravity, so that the end of the rotating block away from the rotating axis extends to the bottom of the corresponding clamping block. This ensures that the bottom of the HDPE membrane effectively touches the bottom, and also avoids the HDPE membrane from floating and being pulled up after being laid in place due to the filling of bentonite and groundwater, thus effectively ensuring the seepage prevention effect after laying. Moreover, due to the ingenious cooperation between the clamping block and the rotating block, the HDPE membrane and the connecting component can be easily inserted into the receiving cavity by their own weight, and there is no need to worry about the connection not being firm after insertion, thus solving the inconvenience of the HDPE membrane being unable to withstand downward pressure.

[0032] 4. In the vertical laying and positioning method of the present invention, the first HDPE film is guided and positioned by the positioning component. When the subsequent HDPE films are lowered, they are assisted in positioning by the locking buckle of the previous HDPE film (including the first HDPE film). This can improve the installation efficiency and positioning accuracy of the subsequent HDPE films, and also keep the subsequent HDPE films away from the tank wall during installation, avoiding direct contact between the HDPE films and sharp objects in the tank wall, and reducing the risk of the HDPE films being scratched.

[0033] In summary, the present invention features simple structure, convenient installation, stable and reliable connection, accurate positioning, and good seepage prevention effect. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the connecting component of the present invention just inserted into the positioning component;

[0035] Figure 2 for Figure 1 The front view;

[0036] Figure 3 for Figure 2 MM-directed cross-section;

[0037] Figure 4 for Figure 3 A magnified view of a portion at point K;

[0038] Figure 5A three-dimensional structural diagram of the connecting component inserted into the bottom of the positioning component according to the present invention;

[0039] Figure 6 for Figure 5 The front view;

[0040] Figure 7 for Figure 6 NN-direction cross-section diagram;

[0041] Figure 8 for Figure 7 A magnified view of a portion at point L;

[0042] Figure 9 This is a cross-sectional view of the connecting component inserted into the middle of the positioning component according to the present invention;

[0043] Figure 10 for Figure 9 A magnified view of a portion of point P;

[0044] Figure 11 for Figure 1 A magnified view of part Q;

[0045] In the figure: 1-positioning component, 11-accommodating cavity, 12-clamping hole, 13-clamping block, 2-connecting component, 21-rotating block groove, 22-rotating shaft, 23-rotating block, 24-abutting plate, 25-elastic support block, 26-connecting ring, 3-HDPE film, 31-locking buckle. Detailed Implementation

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this does not limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0047] like Figures 1 to 11 As shown, the HDPE film vertical laying positioning device of the present invention includes a positioning component 1, a connecting component 2, and an HDPE film 3. The positioning component 1 is arranged horizontally and has a receiving cavity 11 at the top. The connecting component 2 has a long strip structure and its lower part can be inserted into the receiving cavity 11. The bottom of the HDPE film 3 is fixed to the top of the connecting component 2.

[0048] At least two rectangular locking holes 12 are provided at intervals on the two side walls along the length direction of the positioning component 1. The locking holes 12 are connected to the receiving cavity 11. A locking block 13 is slidably disposed in the locking hole 12. The inner side wall of the locking block 13 facing the receiving cavity 11 is an inclined surface that gradually slopes outward from top to bottom.

[0049] The lower cross-section of the connecting component 2 is an inverted trapezoidal structure. The lower two side walls of the connecting component 2 are respectively attached to the inner inclined surface of the corresponding clamping block 13. At least two outwardly inclined rotating block grooves 21 are respectively provided at intervals along the length direction near the bottom end of the lower two side walls of the connecting component 2. The rotating block grooves 21 correspond to the positions of the corresponding clamping holes 12. A rotating shaft 22 is provided near the bottom end of the connecting component 2. A rotating block 23 that can be stored in the rotating block groove 21 is rotatably connected to the rotating shaft 22. When the rotating block 23 is unfolded around the rotating shaft 22, the end away from the rotating shaft 22 extends to the bottom of the corresponding clamping block 13.

[0050] The locking holes 12, which are spaced apart on both sides of the positioning component 1, are arranged symmetrically in pairs on both sides.

[0051] The cavity 11 has a rectangular cross-section with an open top. The locking hole 12 is located above the bottom of the cavity 11. The height difference between the bottom of the locking hole 12 and the bottom of the cavity 11 is greater than the maximum distance from the axis of the rotating shaft 22 to the end of the rotating block 23 away from the rotating shaft 22.

[0052] When the rotating block 23 is housed in the corresponding rotating block slot 21 around the rotating shaft 22, the outer surface of the rotating block 23 is not higher than the lower corresponding side wall surface of the connecting component 2.

[0053] The clamping block 13 is inclined at an angle greater than 60° to the inner wall of the receiving cavity 11, and the thickness of the clamping block 13 is greater than the depth of the clamping hole 12.

[0054] The clamping block 13 has an inner wall facing the receiving cavity 11 and an outer wall facing away from it, both of which are inclined surfaces that gradually slope outward from top to bottom. The middle cross-section of the connecting component 2 is rectangular and is slidably connected to the receiving cavity 11.

[0055] The rotating block groove 21 is a straight groove with an opening at the bottom or an "L"-shaped groove with an opening at the bottom.

[0056] The rotating block 23 is fixedly provided with an outwardly extending abutment plate 24 at the connecting end of the rotating shaft 22, which can abut against the bottom surface of the connecting component 2; the rotating block 23 is provided with a reset spring at the connecting point of the rotating shaft 22, or the rotating block 23 is provided with an elastic support block 25 on the side of the rotating block 23 facing the rotating block groove 21 at the end away from the rotating shaft 22.

[0057] The HDPE membrane 3 is provided with latches 31 extending along the height direction and having at least an open top at both ends. The latches 31 at both ends of the HDPE membrane 3 are provided with snaps extending along the height direction and the snaps at both ends are in opposite directions. The latches 31 of two adjacent HDPE membranes 3 can be fastened and sealed together.

[0058] The top of the connecting component 2 is provided with a plurality of connecting rings 26 spaced apart along the length direction, and the bottom of the HDPE film 3 is fixedly connected to each connecting ring 26.

[0059] After the rotating block 23 is unfolded, the length extending from the side away from the rotating shaft 22 to the bottom of the corresponding clamping block 13 shall not be less than 7cm.

[0060] like Figures 1 to 11 As shown, the HDPE membrane vertical laying method of the present invention, based on the aforementioned HDPE membrane vertical laying positioning device, includes the steps of first piece installation, membrane fixing, first piece hoisting, first piece fixing, subsequent installation, subsequent hoisting, subsequent fixing, and subsequent laying. The specific contents of each step are as follows:

[0061] A. First piece installation: Place the positioning component 1 into the bottom of the already constructed rectangular groove segment;

[0062] B. Membrane fixing: The bottom of the HDPE membrane 3 is fixedly connected to the top of the connecting component 2 via the connecting ring 26;

[0063] C. First piece hoisting: Lower the HDPE film 3, which is fixed to the bottom of the connecting component 2, into the rectangular groove section, and then insert the lower part of the connecting component 2 into the receiving cavity 11 at the top of the positioning component 1 with the assistance of the guide rod.

[0064] D. First piece fixation: Continue to lower the connecting component 2. The lower side wall of the connecting component 2 is attached to the inclined surface of the clamping block 13 and pushes the clamping block 13 to move outward along the clamping hole 12, so that the clamping block 13 is away from the outside of the connecting component 2 and is engaged with the groove wall of the rectangular groove segment; at the same time, after the rotating block 23 enters below the clamping block 13, the rotating block 23 unfolds outward around the rotating shaft 22 under the action of gravity, and the side of the rotating block 23 away from the rotating shaft 22 extends to the bottom of the corresponding clamping block 13, completing the laying of the HDPE film 3;

[0065] E. Subsequent installation: Place the next positioning component 1, and then repeat step B;

[0066] F. Subsequent hoisting: Lower the next HDPE film 3, which is fixed to the next connecting part 2 at the bottom, into the rectangular groove section, and during the lowering process, make the latches 31 of the next HDPE film 3 fasten from top to bottom into the adjacent latches 31 of the previous HDPE film 3.

[0067] G. Subsequent fixing: Under the guidance of the latch 31, the lower part of the next connecting component 2 is inserted into the receiving cavity 11 at the top of the next positioning component 1, and the clamping block 13 of the next positioning component 1 is moved away from the outside of the connecting component 2 and engaged with the groove wall of the rectangular groove segment. The rotating block 23 of the next connecting component 2 unfolds outward under the action of gravity and extends to the bottom of the corresponding clamping block 13, thus completing the laying of the next HDPE film 3.

[0068] H. Subsequent Laying: Repeat steps E to G to complete the laying of the subsequent HDPE membrane 3.

[0069] In steps D and G, the clamping block 13 is inserted into the rectangular groove section at a depth of not less than 5cm on the outside of the connecting component 2. In steps D and G, after the HDPE membrane 3 is laid, the HDPE membrane 3 is tested for damage using a rapid electrical method.

[0070] Example 1

[0071] S100: Reference Figure 1 and Figure 3 Place the rectangular positioning component 1 onto the bottom of the already constructed rectangular groove segment.

[0072] S200: Cut the standard 5.0m HDPE membrane 3 according to the engineering design depth and installation width requirements (the membrane width can be reduced locally according to the actual site conditions). Then, fix the bottom of the 3.0mm thick smooth HDPE membrane 3 to the top of the connecting component 2 through the connecting ring 26. The HDPE membranes 3 are connected by HDPE material connecting locks and sealed with expansion strips.

[0073] S300: A winch is used to lower the HDPE film 3, which is fixed to the bottom of the connecting component 2, into the aforementioned rectangular groove. Then, the lower part of the connecting component 2 is inserted into the receiving cavity 11 at the top of the positioning component 1 with the assistance of the guide rod.

[0074] S400: Continue lowering the connecting component 2. The lower sidewall of the connecting component 2 fits against the inclined surface of the clamping block 13. The rotating block 23 at the bottom of the connecting component 2 rotates and is housed in the rotating block groove 21 (to avoid the rotating block 23 from being obstructed by mud, multiple rotating block grooves 21 and rotating blocks 23 are provided on the lower sidewall of the connecting component 2). Under the weight of the connecting component 2 and the HDPE membrane 3 and the pressure from above, the clamping block 13 is pushed outward along the clamping hole 12, so that the clamping block 13 passes through the outer side of the positioning component 1 away from the outside of the connecting component 2 and engages with the groove wall of the rectangular groove section (the groove wall is a relatively impermeable layer). At this time, at least 10cm of the inner side of the clamping block 13 remains. The rotating block 23 is placed inside the receiving cavity 11, while the outer side of the clamping block 13 is placed outside the receiving cavity 11 by at least 5cm. At the same time, after the rotating block 23 moves down with the connecting component 2 to the bottom of the clamping block 13, the rotating block 23, which is stored in the rotating block groove 21 that is inclined from bottom to top, unfolds outward around the rotating shaft 22 under the action of gravity and the return spring or elastic support block 25, so that the rotating block 23 extends to the bottom of the corresponding clamping block 13 on the side away from the rotating shaft 22 (that is, the length of the rotating block 23 extending to the bottom of the corresponding clamping block 13 shall not be less than 7cm). The abutment plate 24 fixedly installed at the connecting end of the rotating block 23 abuts against the bottom end of the connecting component 2, thus completing the laying of the HDPE film 3.

[0075] S500: Place the next positioning component 1, and then repeat step S200.

[0076] S600: The next HDPE film 3, whose bottom is fixed to the next connecting part 2, is lowered into the rectangular groove, and during the lowering process, the latches 31 of the next HDPE film 3 are fastened from top to bottom into the adjacent latches 31 of the previous HDPE film 3.

[0077] S700: Guided by the latch 31, the lower part of the next connecting component 2 is inserted into the receiving cavity 11 at the top of the next positioning component 1, and the clamping block 13 of the next positioning component 1 is moved away from the outside of the connecting component 2 and engaged with the groove wall of the rectangular groove segment. The rotating block 23 of the next connecting component 2 unfolds outward under the action of gravity and extends to the bottom of the corresponding clamping block 13, thus completing the laying of the next HDPE film 3.

[0078] S800: Repeat steps S500 to S700 to complete the subsequent laying of HDPE membrane 3.

[0079] S900: Using a testing device (or a pre-embedded testing device), the testing equipment is lowered into the rectangular groove to test the connection effect of the HDPE membrane 3 that has been laid and to test the integrity of the HDPE membrane 3.

[0080] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A vertical laying and positioning device for HDPE film, characterized in that, It includes a positioning component (1), a connecting component (2), and an HDPE film (3). The positioning component (1) is arranged horizontally and has a receiving cavity (11) at the top. The connecting component (2) is a long strip structure and its lower part can be inserted into the receiving cavity (11). The bottom of the HDPE film (3) is fixed to the top of the connecting component (2). The positioning component (1) has at least two rectangular locking holes (12) spaced apart on its two side walls along the length direction. The locking holes (12) are connected to the receiving cavity (11). A locking block (13) is slidably disposed in the locking hole (12). The inner side wall of the locking block (13) facing the receiving cavity (11) is an inclined surface that gradually slopes outward from top to bottom. The lower cross section of the connecting component (2) is an inverted trapezoidal structure. The lower two side walls of the connecting component (2) are respectively attached to the inner inclined surface of the corresponding clamping block (13). At least two outwardly inclined rotating block grooves (21) are provided at intervals along the length direction near the bottom end of the lower two side walls of the connecting component (2). The rotating block grooves (21) correspond to the positions of the corresponding clamping holes (12). A rotating shaft (22) is provided near the bottom end of the connecting component (2) of the rotating block groove (21). A rotating block (23) that can be stored in the rotating block groove (21) is rotatably connected to the rotating shaft (22). When the rotating block (23) is unfolded around the rotating shaft (22), the end away from the rotating shaft (22) extends to the bottom of the corresponding clamping block (13).

2. The HDPE film vertical laying positioning device according to claim 1, characterized in that, The cross-section of the receiving cavity (11) is a rectangular structure with an open top. The clamping hole (12) is located above the bottom of the receiving cavity (11). The height difference between the bottom of the clamping hole (12) and the bottom of the receiving cavity (11) is greater than the maximum distance from the axis of the rotating shaft (22) to the end of the rotating block (23) away from the rotating shaft (22).

3. The HDPE film vertical laying positioning device according to claim 2, characterized in that, When the rotating block (23) is housed in the corresponding rotating block groove (21) around the rotating shaft (22), the outer side surface of the rotating block (23) is not higher than the lower corresponding side wall surface of the connecting component (2).

4. The HDPE film vertical laying positioning device according to claim 3, characterized in that, The clamping block (13) is inclined at an angle greater than 60° to the inner wall of the receiving cavity (11), and the thickness of the clamping block (13) is greater than the depth of the clamping hole (12).

5. The HDPE film vertical laying positioning device according to claim 4, characterized in that, The inner wall of the clamping block (13) facing the receiving cavity (11) and the outer wall away from the receiving cavity are both inclined surfaces that gradually slope outward from top to bottom. The middle cross section of the connecting component (2) is rectangular and is slidably connected to the receiving cavity (11).

6. The HDPE film vertical laying positioning device according to claim 4 or 5, characterized in that, The rotating block (23) has an outwardly extending abutting plate (24) fixedly installed at the connecting end of the rotating shaft (22) and can abut against the bottom surface of the connecting component (2); the rotating block (23) has a reset spring at the connecting point of the rotating shaft (22), or the rotating block (23) has an elastic support block (25) on the side of the rotating block (23) facing the rotating block groove (21) at the end away from the rotating shaft (22).

7. The HDPE film vertical laying positioning device according to claim 6, characterized in that, The HDPE membrane (3) is provided with buckles (31) extending along the height direction and having at least an open top at both ends. The buckles (31) at both ends of the HDPE membrane (3) are provided with slots extending along the height direction and the slots at both ends are in opposite directions. The buckles (31) of two adjacent HDPE membranes (3) can be fastened and sealed together.

8. The HDPE film vertical laying positioning device according to claim 7, characterized in that, The top of the connecting component (2) is provided with a plurality of connecting rings (26) spaced apart along the length direction, and the bottom of the HDPE film (3) is fixedly connected to each connecting ring (26).

9. A method for vertically laying HDPE film, characterized in that, The HDPE membrane vertical laying positioning device according to claim 8 includes the following steps: first piece installation, membrane fixing, first piece hoisting, first piece fixing, subsequent installation, subsequent hoisting, subsequent fixing, and subsequent laying. The specific details of each step are as follows: A. First piece installation: Place the positioning component (1) on the bottom of the rectangular groove section that has been constructed; B. Membrane fixing: The bottom of the HDPE membrane (3) is fixedly connected to the top of the connecting component (2) by the connecting ring (26); C. First piece hoisting: Lower the HDPE film (3) with its bottom fixed to the connecting part (2) into the rectangular groove section, and then insert the lower part of the connecting part (2) into the receiving cavity (11) at the top of the positioning part (1) with the assistance of the guide rod; D. First piece fixation: Continue to lower the connecting component (2). The lower side wall of the connecting component (2) is attached to the inclined surface of the clamping block (13) and pushes the clamping block (13) to move outward along the clamping hole (12), so that the clamping block (13) is away from the outside of the connecting component (2) and is engaged with the groove wall of the rectangular groove section; at the same time, after the rotating block (23) enters below the clamping block (13), the rotating block (23) unfolds outward around the rotating shaft (22) under the action of gravity, and the rotating block (23) extends to the bottom of the corresponding clamping block (13) on the side away from the rotating shaft (22), thus completing the laying of the HDPE film (3); E. Subsequent installation: Place the next positioning component (1), and then repeat step B; F. Subsequent hoisting: Lower the next HDPE film (3) that is fixed to the next connecting part (2) into the rectangular groove section, and during the lowering process, make the buckle (31) of the next HDPE film (3) fasten from top to bottom into the adjacent buckle (31) of the previous HDPE film (3). G. Subsequent fixing: Under the guidance of the latch (31), the lower part of the next connecting part (2) is inserted into the receiving cavity (11) at the top of the next positioning part (1), and the clamping block (13) of the next positioning part (1) is moved away from the outside of the connecting part (2) and engaged with the groove wall of the rectangular groove segment. The rotating block (23) of the next connecting part (2) unfolds outward under the action of gravity and extends to the bottom of the corresponding clamping block (13), thus completing the laying of the next HDPE film (3). H. Subsequent laying: Repeat steps E to G to complete the subsequent laying of HDPE membrane (3).

10. The method for vertically laying HDPE film according to claim 9, characterized in that, In steps D and G, the clamping block (13) is inserted into the rectangular groove section at a depth of not less than 5cm on the outside of the connecting component (2); in steps D and G, after the HDPE membrane (3) is laid, the HDPE membrane (3) is tested for damage using a rapid electrical method.

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