HDPE film vertical laying positioning device and vertical laying positioning method

Abstract

The invention belongs to the technical field of anti-seepage engineering, and particularly discloses an HDPE film vertical laying positioning device and a vertical laying positioning method. A containing cavity where a connecting part can be inserted is formed in the top of a positioning part of the device, and an HDPE film is fixed to the top end of the connecting part; clamping holes communicating with the containing cavity are formed in the two side walls of the positioning component, clamping blocks are arranged in the clamping holes in a sliding mode, and the inner side walls of the clamping blocks are inclined faces. The connecting part is of an inverted trapezoidal structure, the two side walls of the lower portion of the connecting part are attached to the inclined faces of the clamping blocks, rotating block grooves are formed in the bottom ends of the two side walls of the lower portion of the connecting part, rotating shafts are arranged at the bottom ends of the rotating block grooves, the rotating shafts are rotationally connected with rotating blocks capable of being contained in the rotating block grooves, and the rotating blocks can extend to the positions below the clamping blocks after being unfolded. The method comprises the steps of first part mounting, film fixing, first part hoisting, first part fixing, follow-up mounting, follow-up hoisting, follow-up fixing and follow-up laying. The anti-seepage structure has the characteristics of simple structure, convenience in laying, stability and reliability in connection, accuracy in positioning and good anti-seepage effect.

Description

Technical Field

[0001] The invention belongs to the technical field of anti-seepage engineering, and specifically relates to a vertical laying positioning device and a vertical laying positioning method for a HDPE membrane with simple structure, convenient laying, stable and reliable connection, precise positioning and good anti-seepage effect. Background Art

[0002] High-density polyethylene film (HDPE film) is widely used in underground anti-seepage projects such as landfills, industrial waste treatment sites and reservoirs due to its superior anti-seepage performance and durability, and has become an important means to prevent groundwater pollution and protect the soil environment. In the above application scenarios, HDPE film usually needs to be laid vertically to form an effective anti-seepage barrier. However, in the actual construction process, the existing vertical laying of HDPE film often faces the following challenges: 1. The presence of sharp objects on the trench wall: During the vertical paving process, there may be sharp stones or other hard objects on the trench wall of the rectangular trench section. These sharp objects may scratch the HDPE membrane, thereby destroying the anti-seepage performance after paving.

[0003] 2. Inaccurate positioning of membrane material: According to the design requirements, the HDPE membrane needs to be accurately positioned in the center of the rectangular trough to ensure that the HDPE membrane is evenly stressed and has the best anti-seepage effect. However, due to the limitations of construction conditions and complex processes, the membrane material is prone to deviate from the center of the rectangular trough during placement, thus affecting the anti-seepage effect after laying.

[0004] 3. Buoyancy problem: After the HDPE membrane is placed in the rectangular trough, it is usually necessary to fill bentonite on both sides of the membrane to protect the membrane from being scratched by sharp objects. However, during the filling process on both sides of the membrane, the bentonite and groundwater will generate buoyancy, which can easily cause the HDPE membrane to float up, causing the HDPE membrane to be pulled up and affecting the accurate positioning and anti-seepage effect after laying.

[0005] The above problems seriously affect the effective vertical laying and service life of the HDPE membrane. Therefore, in the prior art, a plate tip is formed by a solid inverted trapezoidal steel, and positioning steel plates are fixedly arranged on both sides of the upper part of the plate tip, and then two vertically arranged and mutually parallel steel plates are respectively connected to the two positioning steel plates, and then a steel support connected to the two steel plates is slidably arranged between the two steel plates, and then a steel top plate is fixedly arranged on the top of the steel support to form a vertical laying device. When laying, the plate tip is inserted into the soil, and two mutually parallel steel plates and the steel support are inserted into the positioning steel plate of the plate tip, and the steel support is located between the two steel plates, and then the steel top plate is fixed on the top of the steel support, and then the steel top plate is hammered or statically pressed to insert the steel plate, steel support and plate tip into the ground to the designed depth, and finally the steel support is pulled out, and the HDPE membrane is lowered between the two steel plates to complete the laying. Although the aforementioned laying device and laying method protect the HDPE membrane through two steel plates, which can prevent the HDPE membrane from being damaged, accurately positioned, and floating and being pulled up during the laying process, it is easy to cause the device to tilt or even break during laying because it needs to be hammered or static pressure instead of grooving. Not only is the positioning accuracy of the HDPE membrane low, it is only suitable for shallow trench vertical waterproofing construction, but the two sides require parallel steel plates for protection and cannot be reused, which also makes the construction cost high. In addition, since the HDPE membrane is directly lowered between the two steel plates, it is easy to make it difficult to ensure that the HDPE membrane touches the bottom, and it is inconvenient to connect adjacent membranes, making it difficult to guarantee the waterproofing effect. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention has developed a HDPE membrane vertical laying positioning device with simple structure, convenient laying, stable and reliable connection, precise positioning and good anti-seepage effect, and also provides a HDPE membrane vertical laying positioning method.

[0007] The HDPE film vertical laying positioning device of the present invention is realized as follows: it comprises a positioning component, a connecting component, and a HDPE film, wherein the positioning component is arranged horizontally and has a receiving cavity on the top, the connecting component is a long strip structure and the lower part can be inserted into the receiving cavity, and the bottom of the HDPE film is fixed on the top of the connecting component; At least two rectangular clamping holes are arranged at intervals on the two side walls of the positioning component along the length direction, the clamping holes are connected to the accommodating cavity, a clamping block is slidably arranged in the clamping hole, and the inner side wall of the clamping block facing the accommodating cavity is an inclined surface that gradually tilts outward from top to bottom; The lower cross-section of the connecting component is an inverted trapezoidal structure, and the lower two side walls of the connecting component are respectively fitted with the inner inclined surfaces of the corresponding clamping blocks. On the lower two side walls of the connecting component near the bottom end, at least two outwardly inclined turning block grooves are spaced apart along the length direction, and the turning block grooves correspond to the positions of the matching clamping holes. A rotating shaft is provided at the turning block groove near the bottom end of the connecting component, and a rotating block that can be received in the turning 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 below the matching clamping block.

[0008] Furthermore, the cross-section of the accommodating cavity is a rectangular structure with an open top, the clamping hole is arranged above the bottom end of the accommodating cavity, and the height difference from the bottom end of the clamping hole to the bottom end of the accommodating 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.

[0009] Furthermore, when the rotating block is received in the corresponding rotating block groove around the rotating shaft, the outer side surface of the rotating block is not higher than the corresponding side wall surface of the lower part of the connecting component.

[0010] Furthermore, the inner side wall of the clamping block facing the accommodating cavity has an inclination angle greater than 60°, and the thickness of the clamping block is greater than the depth of the clamping hole.

[0011] Furthermore, the inner side wall of the clamping block facing the accommodating cavity and the outer side wall away from the accommodating cavity are both inclined surfaces that gradually incline from top to bottom toward the outside, and the middle cross-section of the connecting component is rectangular and is slidably connected to the accommodating cavity.

[0012] Furthermore, the rotating block is fixedly provided with an abutment plate extending outward and abutting against the bottom surface of the connecting component at the shaft connection end; the rotating block is provided with a return spring at the shaft connection, or the rotating block is provided with an elastic support block at the end away from the shaft facing the rotating block groove.

[0013] Furthermore, the left and right ends of the HDPE film are respectively provided with lock buckles extending along the height direction and open at least at the top. The lock buckles at both ends of the HDPE film are provided with snap-fits extending along the height direction and the snap-fits at both ends are in opposite directions. The lock buckles of two adjacent HDPE films can be buckled together and sealed.

[0014] Furthermore, a plurality of connection rings are arranged at intervals on the top of the connection component along the length direction, and the bottom of the HDPE film is fixedly connected to each connection ring.

[0015] The HDPE film vertical laying positioning method of the present invention is implemented as follows: based on the aforementioned HDPE film vertical laying positioning device, it includes the steps of first piece installation, film fixation, first piece hoisting, first piece fixation, subsequent installation, subsequent hoisting, subsequent fixation and subsequent laying, and the specific contents of each step are as follows: A. First piece installation: Place the positioning component at the bottom of the rectangular groove section that has been constructed; B. Membrane fixing: fix the bottom of the HDPE membrane to the top of the connecting component through a connecting ring; C. First piece hoisting: lower the HDPE film fixed to the bottom of the connecting component into the rectangular slot, and then insert the lower part of the connecting component into the accommodating cavity at the top of the positioning component under the auxiliary guidance of the guide rod; D. Fixing the first piece: Continue to lower the connecting component, the lower side wall of the connecting component fits 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 is clamped with the groove wall of the rectangular groove section; at the same time, after the rotating block enters under the clamping block, the rotating block expands outward around the rotating shaft under the action of gravity, and the rotating block extends away from the rotating shaft to the bottom of the corresponding clamping block, completing the laying of the HDPE film; E. Subsequent installation: Place the next positioning component and repeat step B; F. Subsequent lifting: lower the next piece of HDPE film fixed with the next connecting component at the bottom into the rectangular slot section, and during the lowering process, the lock buckle of the next piece of HDPE film is buckled into the adjacent lock buckle of the previous piece of HDPE film from top to bottom; G. Subsequent fixation: Under the guidance of the lock, insert the lower part of the next connecting component into the accommodating cavity at the top of the next positioning component, and make the clamping block of the next positioning component away from the outside of the connecting component and engage with the groove wall of the rectangular groove section, and the rotating block of the next connecting component is expanded outward and extended to the bottom of the corresponding clamping block under the action of gravity, so as to complete the laying of the next HDPE film; H. Subsequent laying: Repeat steps E to G to complete the subsequent laying of the HDPE membrane.

[0016] Furthermore, in the steps D and G, the clamping block is inserted into the groove wall of the rectangular groove section away from the outer side of the connecting component to a depth of not less than 5 cm; in the steps D and G, after the HDPE film is laid, the HDPE film is tested for damage using a rapid electrical method.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The vertical laying positioning device of the present invention can realize accurate positioning and rapid laying of the HDPE film in the rectangular groove section by lowering the connecting component with the HDPE film at the top and inserting it into the accommodating cavity to connect with the positioning component.

[0018] 2. The vertical laying positioning device of the present invention can push the clamping block in the clamping hole to move outward by moving the connecting component downward on the inclined surface of the clamping block in the accommodating cavity, so that the clamping block is away from the outer side of the connecting component and is clamped with the groove wall of the rectangular groove section, so that the positioning component can be automatically clamped into the excavated rectangular groove section, which can provide stable support for the positioning component and the connecting components inserted therein and the HDPE membrane, and also ensure that the HDPE membrane will not be shifted and affect the positioning due to external force when it is laid vertically, thereby avoiding anti-seepage failure caused by HDPE membrane displacement.

[0019] 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 accommodating chamber, the rotating blocks in the rotating block grooves on the two side walls of the connecting component rotate and unfold around the rotating shaft under the action of their own gravity, so that the end of the rotating block away from the rotating shaft extends to the bottom of the corresponding clamping block, which can ensure that the bottom of the HDPE film effectively touches the bottom, and can prevent the HDPE film from floating up and being pulled up due to filling with bentonite and groundwater after being laid in place, effectively ensuring the anti-seepage effect after laying; and due to the ingenious cooperation between the clamping block and the rotating block, the HDPE film and the connecting component can be easily inserted into the accommodating chamber only by relying on their own weight, and there is no need to worry about the problem of loose connection after insertion, which solves the inconvenience of HDPE film being difficult to withstand downward pressure.

[0020] 4. In the vertical laying positioning method of the present invention, the first HDPE film is guided and positioned by a positioning component, and the subsequent HDPE film is lowered with auxiliary positioning by the lock of the previous HDPE film (including the first HDPE film), which can not only improve the installation efficiency and positioning accuracy of subsequent HDPE films, but also enable subsequent HDPE films to be installed away from the groove wall, avoiding direct contact of the HDPE film with sharp objects in the groove wall, and reducing the risk of the HDPE film being scratched.

[0021] In summary, the present invention has the characteristics of simple structure, convenient laying, stable and reliable connection, precise positioning and good anti-seepage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the connecting component of the present invention just inserted into the positioning component; Figure 2 for Figure 1 A front view of Figure 3 for Figure 2 MM section diagram; Figure 4 for Figure 3 A local enlarged view of the K position; Figure 5 It is a schematic diagram of the three-dimensional structure of the connecting component of the present invention being inserted into the bottom of the positioning component; Figure 6 for Figure 5A front view of Figure 7 for Figure 6 NN section diagram; Figure 8 for Figure 7 A local enlarged view of L; Fig. 9 A cross-sectional view showing the connecting component of the present invention being inserted into the middle of the positioning component; Fig.10 for Fig. 9 A local enlarged view of point P; Fig.11 for Figure 1 A local enlarged view of the Q point; 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 supporting block, 26-connecting ring, 3-HDPE film, 31-locking buckle. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0024] like Figures 1 to 11 As shown, the HDPE film vertical laying positioning device of the present invention comprises a positioning component 1, a connecting component 2, and a HDPE film 3. The positioning component 1 is arranged horizontally and has a receiving cavity 11 on the top. The connecting component 2 is a long strip structure and the 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. At least two rectangular clamping holes 12 are respectively arranged on the two side walls of the positioning component 1 along the length direction, and the clamping holes 12 are connected to the accommodating cavity 11. A clamping block 13 is slidably arranged in the clamping hole 12, and the inner side wall of the clamping block 13 facing the accommodating cavity 11 is an inclined surface that gradually tilts outward from top to bottom; The lower cross-section of the connecting component 2 is an inverted trapezoidal structure, and the lower two side walls of the connecting component 2 are respectively fitted with the inner inclined surfaces of the corresponding clamping blocks 13, and at least two outwardly inclined turning block grooves 21 are respectively arranged at intervals along the length direction near the bottom end on the lower two side walls of the connecting component 2, and the turning block grooves 21 correspond to the positions of the matching clamping holes 12, and the turning block groove 21 is provided with a rotating shaft 22 near the bottom end of the connecting component 2, and a rotating block 23 that can be received in the rotating block groove 21 is rotatably connected to the rotating shaft 22, and 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 matching clamping block 13.

[0025] The clamping holes 12 respectively arranged on the two side walls of the positioning component 1 are arranged symmetrically in pairs.

[0026] The cross-section of the accommodating chamber 11 is a rectangular structure with an open top. The clamping hole 12 is arranged above the bottom end of the accommodating chamber 11. The height difference from the bottom end of the clamping hole 12 to the bottom end of the accommodating chamber 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.

[0027] When the rotating block 23 is received 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 corresponding side wall surface of the lower part of the connecting component 2 .

[0028] The inner side wall of the clamping block 13 facing the accommodating cavity 11 has an inclination angle greater than 60°, and the thickness of the clamping block 13 is greater than the depth of the clamping hole 12 .

[0029] The inner wall of the clamping block 13 facing the accommodating cavity 11 and the outer wall away from the accommodating cavity 11 are both inclined surfaces that gradually tilt outward from top to bottom. The middle cross-section of the connecting component 2 is rectangular and is slidably connected to the accommodating cavity 11.

[0030] The rotating block groove 21 is a straight groove with an opening at the lower end or an "L"-shaped groove with an opening at the lower end.

[0031] The rotating block 23 is fixedly provided with an abutment plate 24 extending outward and abutting against the bottom surface of the connecting component 2 at the connecting end of the rotating shaft 22; the rotating block 23 is provided with a return spring at the connection with the rotating shaft 22, or the rotating block 23 is provided with an elastic support block 25 at the end away from the rotating shaft 22 and facing the rotating block groove 21.

[0032] The left and right ends of the HDPE film 3 are respectively provided with lock buckles 31 extending along the height direction and at least open at the top. The lock buckles 31 at both ends of the HDPE film 3 are extended along the height direction and are provided with snap-fits, and the snap-fits at both ends are in opposite directions. The lock buckles 31 of two adjacent HDPE films 3 can be buckled together and sealed.

[0033] A plurality of connection rings 26 are arranged at intervals at the top of the connection component 2 along the length direction, and the bottom of the HDPE film 3 is fixedly connected to each connection ring 26 .

[0034] The length of the rotating block 23 extending from one side away from the rotating shaft 22 to the bottom of the corresponding clamping block 13 after unfolding shall not be less than 7 cm.

[0035] like Figures 1 to 11 As shown, the HDPE film vertical laying method of the present invention is based on the aforementioned HDPE film vertical laying positioning device, including the steps of first piece installation, film fixing, first piece hoisting, first piece fixing, subsequent installation, subsequent hoisting, subsequent fixing and subsequent laying, and the specific contents of each step are as follows: A. First piece installation: Place the positioning component 1 at the bottom of the rectangular groove section that has been constructed; B. Film fixing: The bottom of the HDPE film 3 is fixedly connected to the top of the connecting component 2 through the connecting ring 26; C. First piece hoisting: lower the HDPE film 3 whose bottom is fixed to the connecting component 2 into the rectangular groove section, and then insert the lower part of the connecting component 2 into the accommodating cavity 11 at the top of the positioning component 1 under the auxiliary guidance of the guide rod; D. Fixing the first piece: Continue to lower the connecting component 2, the lower side wall of the connecting component 2 is in contact with 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 outer side of the connecting component 2 and is clamped 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 is expanded outward around the rotating shaft 22 under the action of gravity, and the rotating block 23 is extended away from the rotating shaft 22 to the bottom of the corresponding clamping block 13, and the laying of the HDPE film 3 is completed; E. Subsequent installation: Place the next positioning component 1, and then repeat step B; F. Subsequent hoisting: lower the next HDPE film 3 fixed with the next connecting component 2 at the bottom into the rectangular groove section, and during the lowering process, the lock buckle 31 of the next HDPE film 3 is buckled into the adjacent lock buckle 31 of the previous HDPE film 3 from top to bottom; G. Subsequent fixing: Under the guidance of the lock buckle 31, the lower part of the next connecting component 2 is inserted into the accommodating cavity 11 at the top of the next positioning component 1, and the clamping block 13 of the next positioning component 1 is away from the outer side of the connecting component 2 and is clamped with the groove wall of the rectangular groove section, and the rotating block 23 of the next connecting component 2 is expanded outward under the action of gravity and extends to the bottom of the corresponding clamping block 13, so as to complete the laying of the next HDPE film 3; H. Subsequent laying: Repeat steps E to G to complete the subsequent laying of the HDPE film 3.

[0036] In the steps D and G, the clamping block 13 is inserted into the groove wall of the rectangular groove section away from the outer side of the connecting component 2 to a depth of not less than 5 cm; in the steps D and G, after the HDPE film 3 is laid, the HDPE film 3 is inspected for damage using a rapid electrical method.

[0037] Example 1 S100: Reference Figure 1 and Figure 3 , place the rectangular positioning component 1 on the bottom of the rectangular groove section that has been constructed.

[0038] S200: According to the requirements of the engineering design depth and installation width, the HDPE membrane 3 with a standard width of 5.0m is cut (the membrane width can be partially reduced according to the actual situation on site), and then the bottom of the 3.0mm thick smooth HDPE membrane 3 is fixedly connected to the top of the connecting component 2 through a connecting ring 26, and the HDPE membranes 3 are connected with HDPE material connecting locks and waterproofed with expansion strips.

[0039] S300: Use a winch to lower the HDPE film 3 whose bottom is fixed to the connecting component 2 into the aforementioned rectangular groove section, and then insert the lower part of the connecting component 2 into the accommodating cavity 11 at the top of the positioning component 1 under the auxiliary guidance of the guide rod.

[0040] S400: Continue to lower the connecting component 2, the lower side wall of the connecting component 2 fits with the inclined surface of the clamping block 13, and the rotating block 23 at the lower part of the connecting component 2 is rotated and stored in the rotating block groove 21 (in order to avoid the mud hindering the rotation of the rotating block 23, a plurality of rotating block grooves 21 and rotating blocks 23 are provided on the lower side wall of the connecting component 2), and under the action of the deadweight of the connecting component 2 and the HDPE film 3 and the upper pressure, the clamping block 13 is pushed to move outward along the clamping hole 12, so that the clamping block 13 is away from the outside of the connecting component 2, passes through the outer side surface of the positioning component 1, and is clamped with the groove wall of the rectangular groove section (the groove wall is a relatively impermeable layer). At this time, at least 10 cm of the inner side of the clamping block 13 is still placed. In the accommodating cavity 11, and the outer side of the clamping block 13 is at least 5 cm outside the accommodating cavity 11; at the same time, after the rotating block 23 moves down to the bottom of the clamping block 13 with the connecting component 2, the rotating block 23 received in the rotating block groove 21 inclined outward from bottom to top expands outward around the rotating shaft 22 under the action of gravity and the return spring or the elastic support block 25, so that the rotating block 23 extends away from the side of the rotating shaft 22 to the bottom of the corresponding clamping block 13 (that is, the length of the rotating block 23 extending to the bottom of the corresponding clamping block 13 shall not be less than 7 cm), and the abutment plate 24 fixedly arranged at the connecting end of the rotating shaft 22 of the rotating block 23 presses against the bottom end of the connecting component 2 to complete the laying of the HDPE film 3.

[0041] S500: Place the next positioning component 1, and then repeat step S200.

[0042] S600: lowering the next HDPE film 3 whose bottom is fixed to the next connecting component 2 into the rectangular groove section, and during the lowering process, the lock buckles 31 of the next HDPE film 3 are buckled into the adjacent lock buckles 31 of the previous HDPE film 3 from top to bottom.

[0043] S700: Under the guidance of the lock 31, the lower part of the next connecting component 2 is inserted into the accommodating cavity 11 at the top of the next positioning component 1, and the clamping block 13 of the next positioning component 1 is away from the outer side of the connecting component 2 and clamped with the groove wall of the rectangular groove section, and the rotating block 23 of the next connecting component 2 is expanded outward and extended to the bottom of the corresponding clamping block 13 under the action of gravity, thereby completing the laying of the next HDPE film 3.

[0044] S800: Repeat steps S500 to S700 to complete the laying of the subsequent HDPE film 3.

[0045] S900: Using the detection device (or the pre-buried detection device), the detection equipment is lowered into the rectangular groove section to detect the connection effect of the connection lock of the laid HDPE film 3 and the integrity of the HDPE film 3.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vertical laying positioning device for HDPE film, characterized in that: It comprises a positioning component (1), a connecting component (2), and a HDPE film (3); the positioning component (1) is arranged horizontally and has a receiving cavity (11) on 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); At least two rectangular clamping holes (12) are arranged at intervals on both side walls of the positioning component (1) along the length direction, the clamping holes (12) are connected to the accommodating cavity (11), a clamping block (13) is slidably arranged in the clamping hole (12), and the inner side wall of the clamping block (13) facing the accommodating cavity (11) is an inclined surface that gradually inclines from top to bottom toward the outside; The lower cross-section of the connecting component (2) is an inverted trapezoidal structure. The lower side walls of the connecting component (2) are respectively fitted with the inner inclined surfaces of the corresponding clamping blocks (13). At least two outwardly inclined rotating block grooves (21) are respectively arranged at intervals along the length direction near the bottom end on the lower side walls of the connecting component (2). The rotating block grooves (21) correspond to the positions of the matching clamping holes (12). A rotating shaft (22) is arranged near the bottom end of the connecting component (2). A rotating block (23) that can be received 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), one end away from the rotating shaft (22) extends to the bottom of the matching clamping block (13).

2. The HDPE film vertical laying positioning device according to claim 1, characterized in that: The cross section of the accommodating cavity (11) is a rectangular structure with an open top, the clamping hole (12) is arranged above the bottom end of the accommodating cavity (11), and the height difference between the bottom end of the clamping hole (12) and the bottom end of the accommodating 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 received 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 corresponding side wall surface at the bottom of the connecting component (2).

4. The HDPE film vertical laying positioning device according to claim 3, characterized in that: The inner side wall of the clamping block (13) facing the accommodating cavity (11) has an inclination angle greater than 60°, 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 side wall of the clamping block (13) facing the accommodating cavity (11) and the outer side wall facing away from the accommodating cavity (11) are both inclined surfaces that gradually incline from top to bottom toward the outside. The middle cross-section of the connecting component (2) is rectangular and is slidably connected to the accommodating cavity (11).

6. The HDPE film vertical laying positioning device according to claim 4 or 5, characterized in that: The rotating block (23) is fixedly provided with an abutment plate (24) extending outward and capable of abutting against the bottom surface of the connecting component (2) at the connecting end of the rotating shaft (22); the rotating block (23) is provided with a return spring at the connecting portion of the rotating shaft (22), or the rotating block (23) is provided with an elastic support block (25) at the end away from the rotating shaft (22) and facing the rotating block groove (21).

7. The HDPE film vertical laying positioning device according to claim 6, characterized in that: The left and right ends of the HDPE film (3) are respectively provided with lock buckles (31) extending in the height direction and at least open at the top; the lock buckles (31) at both ends of the HDPE film (3) are provided with snap-fits extending in the height direction and the snap-fits at both ends are in opposite directions; the lock buckles (31) of two adjacent HDPE films (3) can be snap-fitted and sealed with each other.

8. The HDPE film vertical laying positioning device according to claim 7, characterized in that: A plurality of connection rings (26) are arranged at intervals at the top end of the connection component (2) along the length direction, and the bottom of the HDPE film (3) is fixedly connected to each connection ring (26).

9. A method for vertically laying a HDPE film, characterized in that: The vertical laying positioning device of the HDPE film according to claim 8 includes the steps of first piece installation, film fixing, first piece hoisting, first piece fixing, subsequent installation, subsequent hoisting, subsequent fixing and subsequent laying, and the specific contents of each step are as follows: A. First piece installation: Place the positioning component (1) at 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) via a connecting ring (26); C. First piece hoisting: lower the HDPE film (3) whose bottom is fixed to the connecting component (2) into the rectangular groove section, and then insert the lower part of the connecting component (2) into the accommodating cavity (11) at the top of the positioning component (1) under the auxiliary guidance of the guide rod; D. Fixing the first piece: Continue to lower the connecting component (2), the lower side wall of the connecting component (2) is in contact with the inclined surface of the clamping block (13), and the clamping block (13) is pushed to move outward along the clamping hole (12), so that the clamping block (13) is away from the outer side of the connecting component (2) and is clamped 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) is expanded outward around the rotating shaft (22) under the action of gravity, and the rotating block (23) is extended away from the rotating shaft (22) to the bottom of the corresponding clamping block (13), and the laying of the HDPE film (3) is completed; E. Subsequent installation: Place the next positioning component (1) and repeat step B; F. Subsequent lifting: lowering the next HDPE film (3) whose bottom is fixed to the next connecting component (2) into the rectangular groove section, and during the lowering process, the lock buckle (31) of the next HDPE film (3) is buckled from top to bottom into the adjacent lock buckle (31) of the previous HDPE film (3); G. Subsequent fixing: under the guidance of the lock buckle (31), the lower part of the next connecting component (2) is inserted into the accommodating cavity (11) at the top of the next positioning component (1), and the clamping block (13) of the next positioning component (1) is away from the outer side of the connecting component (2) and is clamped with the groove wall of the rectangular groove section, and the rotating block (23) of the next connecting component (2) is unfolded outwards under the action of gravity and extends to the bottom of the corresponding clamping block (13), thereby completing the laying of the next HDPE film (3); H. Subsequent laying: Repeat steps E to G to complete the subsequent laying of the HDPE membrane (3).

10. The method for vertically laying a HDPE film according to claim 9, characterized in that: In the above-mentioned steps D and G, the clamping block (13) is inserted into the groove wall of the rectangular groove section away from the outer side of the connecting component (2) to a depth of not less than 5 cm; in the above-mentioned steps D and G, after the HDPE film (3) is laid, the HDPE film (3) is inspected for damage using a rapid electrical method.

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