A landfill vertical impermeable membrane laying device and method

Abstract

This invention discloses a vertical geomembrane laying device and method for landfills. The landfill has an underground trench, including a hanging frame and a geomembrane. The hanging frame is configured to move up and down along the underground trench. The geomembrane is laid on one side of the hanging frame, and interlocking structures are provided on both longitudinal sides of the geomembrane. Two sets of counterweight supports are respectively located at the longitudinal ends of the geomembrane. A detachable fixing component is constructed to connect the hanging frame and the counterweight supports to temporarily fix the geomembrane to the hanging frame. When the geomembrane is lowered, the interlocking structures are interlocked with the interlocking structures of adjacent geomembranes. After the geomembrane is lowered into place, the detachable fixing component can be released to separate the geomembrane from the hanging frame. The two sets of counterweight supports apply longitudinal tension to the geomembrane to keep it in a vertically tensioned state. This invention solves the technical problems of existing geomembranes being easily scratched by sharp objects during the lowering process and the insufficient integrity of the geomembrane after laying.

Description

Technical Field

[0001] This invention relates to the field of landfill seepage prevention technology, and in particular to a device and method for laying vertical geomembranes in landfills. Background Technology

[0002] In the environmental construction of landfills, geomembranes are typically laid to construct seepage prevention systems. Vertical seepage prevention systems, developed from traditional geomembrane laying techniques, significantly improve seepage prevention reliability by constructing a continuous flexible wall composed of geomembranes and other materials underground. Currently, the most commonly used construction method for such vertical seepage prevention systems is the sheet pile method. The construction process of this method includes: first, driving continuous steel sheet piles into underground trenches; then, using lifting equipment, vertically inserting the wrapped geomembrane, either rolled up or pre-sealed in geotextile bags, into the trenches enclosed by the steel sheet piles; finally, backfilling and sealing, and removing the steel sheet piles to complete the laying operation.

[0003] However, during the driving and extraction of sheet piles, the sharp structures on the pile interlocks and surfaces are prone to scratching and puncturing the geomembrane, causing damage and leaks in the geomembrane, which directly affects the seepage prevention effect. At the same time, the driving and extraction of sheet piles also increases the complexity of the construction process. Driving and extracting sheet piles requires a lot of machine shifts and working time, and the construction process is cumbersome, resulting in low efficiency. The extraction process also carries certain risks, which further affects the quality and efficiency of geomembrane laying. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, one of the objectives of this invention is to provide a device and method for laying vertical geomembranes in landfills, which solves the technical problems of complex construction procedures, low efficiency, and easy scratching and puncture of geomembranes leading to leaks when using the sheet pile method to construct vertical geomembranes.

[0005] One of the objectives of this invention is achieved through the following technical solution: A vertical geomembrane laying device for a landfill, wherein the landfill has an underground trench, including The frame and geomembrane are provided, wherein the frame is configured to move up and down along the underground trench; the geomembrane is laid on one side of the frame and interlocking structures are provided on both longitudinal sides of the geomembrane. Two sets of counterweight supports are respectively installed at the two longitudinal ends of the geomembrane; A detachable fastener is configured to connect the hanger frame and the counterweight support to temporarily fix the geomembrane to the hanger frame; When the geomembrane is lowered, the interlocking structure is interlocked with the interlocking structure of the adjacent geomembrane. After the geomembrane is lowered into place, the detachable fixing member can be released to separate the geomembrane from the hanging frame; and the two sets of counterweight support members apply longitudinal tension to the geomembrane to keep the geomembrane in a vertical and taut state.

[0006] Based on the above technical solution, the present invention is further described as follows: The two sets of counterweight support components are a rigid beam and a counterweight beam, respectively; After the geomembrane is lowered into place, the rigid beam is fixed to the upper end of the underground trench, and the counterweight beam is set on the bottom surface of the underground trench.

[0007] As a further optimization of the present invention The hanging frame includes a rectangular frame, and a number of lifting auxiliary lifting points are provided on the side of the rectangular frame away from the geomembrane, which are symmetrically arranged along the central axis of the length of the rectangular frame. The height of the rectangular frame is configured to be no less than the depth of the underground trench.

[0008] As a further optimization of the present invention, the lifting auxiliary hoisting point includes: The first lifting point is located at the upper end of the rectangular frame; The second lifting point is located at the middle part of the rectangular frame; The third lifting point is located at the lower end of the rectangular frame.

[0009] As a further optimization of the present invention, the interlocking structure includes an E-type lock, the E-type lock including a male buckle disposed on one side of the geomembrane and a female buckle disposed on the other side of the geomembrane; The male buckle and the female buckle are designed to be interlocked and connected.

[0010] As a further optimization of the present invention, the geomembrane is configured as a rectangle; The length of the geomembrane is the same as the depth of the underground trench; The width of the geomembrane is wider than the width of the rectangular frame.

[0011] As a further optimization of the present invention, the detachable fastener includes a metal wire, one end of which is fixedly connected to the counterweight support, and the other end of which is detachably connected to the hanger frame.

[0012] As a further optimization of the present invention, an auxiliary detachment structure is also included, the auxiliary detachment structure comprising: A blocking block, which is fixedly disposed on the metal wire; A snap-fit ​​disengagement structure is configured to snap-fit ​​into the blocking block; A lifting trigger structure includes a lifting column, which is slidably disposed at the lower end of a rectangular frame. The rectangular frame is provided with a lifting groove for the lifting column to slide in. The upper end of the lifting groove is elastically connected to the upper end of the lifting column. The lifting column is provided with a trigger part. When the lower end of the hanger frame contacts the bottom surface of the underground slot, the lifting column moves from bottom to top along the lifting slot, and the triggering part moves with the lifting column to a designated position to release the locking and disengaging structure from limiting the blocking block.

[0013] As a further optimization of the present invention, the snap-on disengagement structure includes: A connecting seat is provided on the side of the lower end of the rectangular frame away from the geomembrane. The connecting seat has a through hole that runs vertically through the frame. The metal wire passes through the through hole. The blocking block is slidably disposed in the through hole. The connecting seat has a sliding groove that is perpendicular to and connected to the through hole. A sliding seat, the sliding seat including a sliding seat body, a wire guide groove disposed on the sliding seat body and adapted to the metal wire, and a hand-operated part disposed on the upper end of the sliding seat body; The slide block body is slidably disposed within the sliding groove; The sliding groove extends along the direction of the sliding groove, and the rear end of the sliding groove is provided with a release hole that is adapted to the blocking block. The upper end of the manual operating part extends out of the connecting seat; The trigger part is configured as an insertion slot adapted to be inserted into the front end of the slide body. When the front end of the slide body is inserted into the insertion slot, the release hole and the through hole are coaxially arranged, and the blocking block is disengaged from the connecting seat along the through hole.

[0014] The present invention also provides a laying method, which uses the aforementioned landfill vertical geomembrane laying device for laying, the steps of which include: S101: Lay the geomembrane symmetrically on the frame of the hanger, with the centerline of the geomembrane along its length aligned with the centerline of the frame along its length. S102: The rigid beam is temporarily fixed to the upper end of the hanger frame using a detachable fastener, and the counterweight beam is temporarily fixed to the lower end of the hanger frame using a detachable fastener; S103: After connecting the hooks on the lifting equipment to all the lifting auxiliary points, lift the frame of the lifting device to the top of the underground trench; S104: Lower the upper set of scaffold frames vertically into the underground trench, while the ground staff maintains the verticality of the upper set of scaffold frames; lift the next set of scaffold frames above the first set of scaffold frames, and with the cooperation of the lifting equipment and staff, align and insert the female buckle on the next set of geomembrane with the male buckle on the previous set of geomembrane; S105: The lifting equipment slowly and vertically lowers the hanger frame until the next set of hanger frames falls into the underground trench; S106: Remove the detachable fasteners, separate the rigid beam and counterweight beam from the hanger frame, fix the rigid beam to the ground, lift the hanger frame and move it out of the underground trench, place it on the ground, wait for the geomembrane to be laid, and repeat S101-106. S107: Filling material on both sides of the geomembrane.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides stable support for the laying and lifting of geomembranes via a hanger frame, ensuring the geomembrane remains vertical within the underground trench and preventing tilting and wrinkling due to unstable support, thus laying the foundation for subsequent connection of adjacent geomembranes. It also utilizes the geomembrane as a seepage-proof carrier, achieving continuous coverage of the underground trench through its adaptive design to the trench depth and hanger frame width. Simultaneously, it improves the smoothness of sliding connections between adjacent geomembranes, ensuring the entire seepage-proof system is securely installed. The integrity of the geomembrane is ensured. Based on this, two sets of counterweight supports apply tension to both ends of the geomembrane longitudinally, maintaining its vertical tension throughout the lowering process. This effectively counteracts the geomembrane's own slackness and further ensures its flatness. Detachable fasteners are used to temporarily fix the hanger frame to the counterweight supports, ensuring the stability of the synchronous lifting of the geomembrane and hanger frame. This also allows for quick release of the fasteners after the geomembrane is lowered into place, enabling the hanger frame to be recycled and reused, thus improving construction efficiency. Simultaneously, an auxiliary release structure further optimizes the release process of the detachable fasteners. No manual excavation is required; the release action is triggered simply by contact between the hanger frame and the bottom of the excavated area, reducing manual labor intensity and safety risks. This also ensures the geomembrane remains taut during the release process, preventing deformation due to external forces.

[0016] 2. The laying method using this device eliminates the need for the driving and extraction of sheet piles in traditional sheet pile methods, fundamentally eliminating the risk of scratches and punctures to the geomembrane caused by sheet pile operations. Simultaneously, the laying process of the geomembrane on the hanger frame enables rapid, vertical lowering of the geomembrane and precise alignment of the interlocking structures between adjacent geomembranes, effectively preventing wrinkles and skewing during laying and ensuring the integrity of the connection between adjacent geomembranes. This significantly improves construction efficiency and the quality of the geomembrane laying. Furthermore, the construction process is simplified, and overall construction costs and energy consumption are significantly reduced, demonstrating outstanding practicality and economic advantages. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the hanger frame structure of the present invention; Figure 4 This is a schematic diagram of the auxiliary detachment structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the auxiliary detachment structure of the present invention; Figure 6 This is a schematic diagram of the sliding seat structure of the present invention; Figure 7 This is a schematic diagram of the lifting column structure of the present invention; Figure 8 This is a schematic diagram of the method flow of the present invention.

[0018] In the picture: 1-Hanger frame, 11-Rectangular frame, 111-Long straight rod, 112-Diagonal support rod, 113-Horizontal support rod, 12-Lifting lug, 121-First lifting point, 122-Second lifting point, 123-Third lifting point. 2-Geomembrane, 21-Interlocking structure, 211-Main body, 212-Supporting part, 3-Counterweight support, 31-Rigid beam, 32-Counterweight beam 4-Removable fastener, 41-Metal wire, 5-Auxiliary release structure, 51-Blocking block, 52-Snap-on release structure, 521-Connecting seat, 5211-Through hole, 5212-Sliding groove, 522-Sliding seat, 5221-Sliding seat body, 5222-Slippery thread groove, 5223-Manual operation part, 5224-Release hole, 53-Lifting trigger structure, 531-Lifting column, 5311-Trigger part. Detailed Implementation

[0019] Below, in conjunction with the appendix Figure 1To be continued Figure 8 The present invention will be further described in detail below with specific implementation methods. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] A vertical geomembrane laying device for landfills includes a hanger frame 1, a geomembrane 2, two sets of counterweight supports 3, and detachable fixing components 4. The hanger frame 1 provides stable support for the laying and lifting of the geomembrane 2, ensuring that the geomembrane 2 remains vertical within the underground trench, preventing tilting and wrinkling due to unstable support, and laying the foundation for subsequent connection of adjacent geomembranes 2. The geomembrane 2 serves as a seepage barrier, and its design, adapted to the depth of the underground trench and the width of the hanger frame 1, achieves continuous coverage of the underground trench while simultaneously improving the seepage resistance between adjacent soil layers. The smoothness of the geomembrane 2 sliding connection; on this basis, two sets of counterweight support members 3 are used to apply tension to the longitudinal ends of the geomembrane 2 respectively, so that the geomembrane 2 remains vertically tensioned throughout the entire lowering process, effectively counteracting the loosening tendency of the geomembrane 2 and further ensuring the flatness of the geomembrane 2; the temporary fixation of the hanger frame 1 and the counterweight support members 3 is achieved by means of detachable fasteners 4, which can not only ensure the stability of the synchronous lifting of the geomembrane 2 and the hanger frame 1, but also quickly release the fixation after the geomembrane 2 is lowered into place, realize the recycling and reuse of the hanger frame 1, and improve construction efficiency.

[0021] Please refer to the attached document. Figure 1 and attached Figure 3 The hanging frame 1 includes a rectangular frame 11, which is configured to move up and down along the underground trench under the action of a lifting device, thereby driving the geomembrane 2 laid on one side of it to move up and down synchronously to complete the laying of the geomembrane 2 in the underground trench. Specifically, the rectangular frame 11 includes two long straight rods 111 and several sets of inclined support rods 112 and horizontal support rods 113 arranged between the two long straight rods 111. The inclined support rods 112 are X-shaped and welded to the long straight rods 111 to improve the structural stability of the rectangular frame 11. It should be noted that the length of the rectangular frame 11 is not less than the depth of the underground trench, preferably when the hanging frame 11 is lower than the depth of the underground trench. After the lower end of the frame 1 contacts the bottom surface of the underground trench, the upper end of the frame 1 is still partially above the ground. This allows ground personnel to disassemble the frame 1 and the counterweight support 3 and assist in connecting it with the next set of geomembrane 2. In this embodiment, the depth of the underground trench is 20m, so the height of the rectangular frame 11 is 21.5m. A horizontal support rod 113 can be set at a height of 20m on the rectangular frame to facilitate the fixing of the counterweight support 3. The width of the rectangular frame 11 is 3.6m. When ground personnel are standing and operating, their arms can easily reach the upper end of the rectangular frame 11, thereby completing the installation and disassembly of the detachable fixing component 4.

[0022] Please continue to refer to the appendix. Figure 1 and attached Figure 3 The rectangular frame 11 has several sets of lifting auxiliary points on the side away from the geomembrane 2. The lifting auxiliary points include three sets of lifting lugs 12. Each set of lifting lugs 12 is symmetrically fixed on a long straight rod 111 along the central axis of the length direction of the rectangular frame 11. Specifically, the lifting lugs 12 include a first lifting point 121, a second lifting point 122, and a third lifting point 123. The first lifting point 121 is located at the top of the rectangular frame 11, the second lifting point 122 is located in the middle of the rectangular frame 11, and the third lifting point 123 is located at the lower end of the rectangular frame 11. This ensures that the lifting equipment is subjected to balanced force when lifting the rectangular frame 11, avoiding tilting or twisting of the frame 1, thereby ensuring that the geomembrane 2 can be lowered smoothly in an absolutely vertical posture.

[0023] Please refer to the attached document. Figure 1 and attached Figure 2 The geomembrane 2 is configured as a rectangle, and interlocking structures 21 are provided on both longitudinal sides of the geomembrane 2. The interlocking structures 21 may be, but are not limited to, E-type locks. The length of the geomembrane 2 is the same as the depth of the underground trench, and the width of the geomembrane 2 is longer than the width of the rectangular frame 11. The geomembrane 2 includes a main body 211 with the same width as the hanging frame 1 and receiving parts 212 provided on both sides of the main body 211. The receiving parts 212 are the areas where the geomembrane 2 extends beyond the long straight rod 111 during laying. The width of the receiving parts 212 is configured to be greater than 5cm and less than 25cm, and the width of the receiving parts 212 depends on... The geomembrane 2 possesses strong longitudinal tensile toughness. A geomembrane 2 with higher longitudinal tensile toughness has a shorter supporting portion 212. The supporting portion 212 is connected to the E-type lock via a heat-welding process. Specifically, the E-type lock includes a male buckle welded to one side along the length of the geomembrane 2 and a female buckle welded to the other side along the length of the geomembrane 2. The male and female buckles are interlocked and connected. In this embodiment, the geomembrane 2 is 20m long and 4m wide. During installation, the centerline of the geomembrane 2 with the welded male and female buckles coincides with the centerline of the rectangular frame 11. This width difference causes the geomembrane 2 to extend beyond the long straight rods 111 of the hanger frame 1 along both sides of its width. The 20cm length is used to assist in the interlocking connection between the extended part of the geomembrane 2, namely the receiving part 212, and the adjacent geomembrane 2E-type lock. The length of both the male and female buckles is 20m to ensure the complete connection of the geomembrane 2 along the depth of the underground trench and to avoid leakage breaks due to insufficient buckle length.

[0024] Please refer to the attached document. Figure 1 and attached Figure 2When the geomembrane 2 is lowered, the interlocking structure 21 is interlocked with the interlocking structure 21 of the adjacent geomembrane 2. Specifically, the previous group of geomembranes 2 is erected in the underground trench along with the hanger frame 1, and the female buckle of the previous group of geomembranes 2 is located on the side where the laying is to continue. The next group of geomembranes 2 is lifted by another set of lifting equipment along with the hanger frame 1. The lower end of the male buckle of the next group of geomembranes 2 is close to the upper end of the female buckle of the previous group of geomembranes 2. With the cooperation of the lifting equipment operator and the ground workers, the male buckle of the next group of geomembranes 2 is slowly and vertically inserted into the female buckle of the previous group of geomembranes 2. The lifting equipment operator controls the lifting frame of the next group to slowly descend, so that the male buckle slowly descends along the extension direction of the female buckle. At this time, the side of the receiving part 212 near the main body of the geomembrane 2 is connected to the long straight rod 11 of the hanger frame 1. 1. Maintaining a close fit, relying on the rigid support of the hanger frame 1 and the counterweight of the counterweight support 3, ensures that the entire geomembrane 2 remains upright and extended. At the same time, the width difference formed by the receiving part 212 effectively avoids interference between the hanger frame 1 and adjacent hanger frames 1 during the docking process, thus preventing bending and wrinkling of the main body 211 itself. The two adjacent hanger frames 1, especially the long straight rods 111, will not touch. It should also be noted that when the male and female fasteners are interlocked, the friction generated will cause deformation and bending of the geomembrane 2. However, the geomembrane 2 with this width distance from the receiving part 212 can offset the stress caused by this friction by its own longitudinal tensile toughness, thereby reducing the deformation of the main body 211 of the geomembrane 2, reducing local jamming, and improving the smoothness of the relative movement of the male and female fasteners.

[0025] When encountering a corner scenario in underground trenching, where two connected underground trenches are arranged at a certain angle or perpendicularly, the receiving part 212 can complete the corner adaptation. That is, when lowering the geomembrane 2, the receiving part 212 can be placed at the corner to achieve the connection of the two geomembranes 2 in the two vertical trenches.

[0026] Please continue to refer to the appendix. Figure 1 and attached Figure 3The counterweight support 3 is provided in two sets, which are respectively located at the longitudinal ends of the geomembrane 2. Specifically, the two sets of counterweight support 3 are a rigid beam 31 fixedly connected to the upper end of the geomembrane 2 and a counterweight beam 32 fixedly connected to the lower end of the geomembrane 2. The rigid beam 31 can be made of steel pipe, and the counterweight beam 32 can be made of cement beam. The counterweight support 3 can be fixedly connected to the geomembrane 2 by, but is not limited to, clamping connection and wire connection. The length of the rigid beam 31 and the counterweight beam 32 is less than the width of the geomembrane 2, and a bearing portion 212 is reserved between the ends of the rigid beam 31 and the counterweight beam 32 and the side of the geomembrane 2 to avoid affecting the movement of the interlocking structure 21. In this embodiment, during construction, the geomembrane 2 is laid flat on the top of the hanging frame 1, and the steel pipe and cement beam are placed at the upper and lower ends of the geomembrane 2 respectively. The steel pipe and cement beam are then connected to the geomembrane 2 by wire. The geomembrane 2 is connected by, but not limited to, binding and stringing. Multiple rings are arrayed along the axial direction on both the steel pipe and the cement beam. Metal buckles or folded edge perforations are pre-set at the upper and lower ends of the geomembrane 2 to facilitate wire passage. The detachable fixing component 4 connects the hanger frame 1 and the counterweight support 3 to temporarily fix the geomembrane 2 to the hanger frame 1. Then, the lifting equipment lifts the hanger frame 1, and the geomembrane 2 moves synchronously with the hanger frame 1. When the geomembrane 2 is lowered, it is in a vertical suspended state. At this time, the cement beam generates a downward force due to its own weight, and the steel pipe is lifted and fixed by the hanger frame 1. Therefore, the two sets of counterweight support components 3 apply longitudinal tension to the geomembrane 2. Under the longitudinal tension of the steel pipe and the cement beam, the geomembrane 2 naturally unfolds, effectively counteracting its own slack tendency and preventing wrinkles, thus keeping the geomembrane 2 in a taut state.

[0027] For details, please refer to the appendix. Figure 2 and 3The detachable fastener 4 can be, but is not limited to, bolts, pins, and metal wire 41. During the lowering of the geomembrane 2, it maintains the connection between the hanger frame 1 and the counterweight support 3. After the geomembrane 2 is lowered into place, the detachable fastener 4 can be released to separate the geomembrane 2 from the hanger frame 1. In this embodiment, the metal wire 41 is iron wire, which can be connected and fixed to the counterweight support 3 by, but is not limited to, on-site binding or pre-welding the iron wire to a steel pipe, or pre-fixing the iron wire to a cement beam, etc. The other end of the iron wire is fixed to the hanger frame 1 through on-site installation. This allows the counterweight support 3 to move a small distance during hoisting and lowering by utilizing the flexibility of the iron wire itself, avoiding the use of methods such as... After the installation of rigid structures such as bolts, the distance between the two counterweight supports 3 is less than the height of the geomembrane 2, which prevents the geomembrane 2 from fully extending. However, by ensuring the movement of the cement beam, the downward force of the cement beam can be maintained, ensuring that the geomembrane 2 is always in a tensioned state under downward pull. At the same time, it allows for a small amount of movement through the steel pipe and cement beam. When the hanger sways slightly, it absorbs part of the swaying effect, ensuring that the geomembrane 2 will not swing violently due to the slight swaying of the hanger. After the geomembrane 2 is lowered into place, the detachable fastener 4 can be released to separate the geomembrane 2 from the hanger frame 1. In this embodiment, ground personnel and workers in the underground trench can easily release the constraint of the detachable fastener 4 by cutting the wire with pliers. Furthermore, the rigid beam 31 is fixed to the upper end of the underground trench, so that the upper end of the geomembrane 2 forms a counterweight through its own weight or the supporting force between it and the ground, preventing the geomembrane 2 from slipping due to the lateral pressure during trench backfilling.

[0028] Example 2 In Example 2, the same symbols are used for the same structures as in Example 1, and the same descriptions are omitted. Example 2 is an improvement on Example 1. Please refer to [link / reference needed]. Figure 4 To be continued Figure 7 It also includes an auxiliary detachment structure 5, which is used to further optimize the release process of the detachable fastener 4. It eliminates the need for manual operation to go deep into the underground trench. The detachment action can be triggered simply by the contact between the hanger frame 1 and the bottom of the underground trench, reducing the intensity of manual operation and safety risks. At the same time, it ensures that the geomembrane 2 remains taut during the fixation release process, avoiding deformation of the membrane due to external force intervention.

[0029] For details, please refer to the appendix. Figure 4 and attached Figure 5The auxiliary release structure 5 includes a blocking block 51, a snap-on release structure 52, and a lifting trigger structure 53. It is used to achieve quick connection, fixation, and release between the detachable fixing component and the counterweight support component 3, which is more convenient than the traditional winding and binding method. The lifting trigger structure 53 is designed to connect with the bottom surface of the underground trench to automatically release the limiting function of the blocking block 51. This process does not require manual operation into the underground trench or the use of additional disassembly tools, which reduces the labor intensity of ground workers and avoids the safety risks of underground operations. During the triggering process, the longitudinal tension of the counterweight support component 3 on the geomembrane 2 remains stable, thereby ensuring that the geomembrane 2 is still in a vertical tension state. The snap-on release structure 52 limits the blocking block 51 and provides timely response to the lifting trigger structure 53.

[0030] For details, please refer to the appendix. Figure 5 The blocking block 51 is a frustum-shaped block that is thicker at the top and thinner at the bottom. It is fixed to the middle of the metal wire 41 by welding. The metal wire 41 and the central axis of the blocking block 51 coincide. Please continue to refer to the appendix. Figure 5 and attached Figure 7 The lifting trigger structure 53 includes a lifting column 531, which is slidably disposed at the lower end of the rectangular frame 11. The rectangular frame 11 is provided with a lifting groove 114 for the lifting column 531 to slide. The upper end of the lifting groove 114 is elastically connected to the upper end of the lifting column 531. The lifting column 531 is provided with a trigger part 5311. In this embodiment, the long straight rod 111 has a circular lifting groove 114 extending upward from the lower end. The lifting column 531 is a cylindrical iron column. The trigger part 5311 is configured as an insertion groove that is horizontally recessed inward from the outer side of the lifting column 531. The lifting groove 114... The upper wall and the upper end of the lifting column 531 are respectively connected to the upper and lower ends of the first spring, so that in the natural state and the vertical state of the long straight rod 111, at least a part of the lifting column 531 is located below the lower end of the long straight rod 111. After the lower end of the hanger frame 1 contacts the bottom surface of the underground slot, as the hanger frame 1 descends, the lifting column 531 moves from bottom to top along the lifting groove 114. When the lifting column 531 is completely submerged in the lifting groove 114, the trigger part 5311 moves with the lifting column 531 to the designated position, triggering the locking and disengaging structure 52 to release the locking and disengaging structure 52 from limiting the blocking block 51.

[0031] Please refer to the attached document. Figure 5 and attached Figure 6Before the lifting column 531 triggers the locking and disengagement structure 52, the locking and disengagement structure 52 is locked to the blocking block 51, so that the counterweight beam 32 is temporarily fixed to the lower end of the hanger frame 1. When the lifting column 531 triggers the locking and disengagement structure 52, the blocking block 51 and the metal wire 41 disengage from the locking and disengagement structure 52, so that the counterweight beam 32 disengages from the hanger frame 1. Specifically, the locking and disengagement structure 52 includes a connecting seat 521 and a sliding seat 522. The connecting seat 521 is located on the side of the lower end of the rectangular frame 11 away from the geomembrane 2, and is configured as a rectangular support block. The connecting seat 521 has a through hole 5211 that runs vertically through it, and the metal wire 41 passes through the through hole 521. 1. The blocking block 51 is slidably disposed within the through hole 5211. The connecting seat 521 is provided with a sliding groove 5212 that is perpendicular to and through the through hole 5211. The sliding seat 522 includes a sliding body 5221, a wire groove 5222 disposed on the sliding body 5221 and adapted to the metal wire 41, and a hand-operated part 5223 disposed on the upper end of the sliding body 5221. In this embodiment, the sliding body 5221 is elastically slidably disposed within the sliding groove 5212. The sliding body 5221 is a rectangular strip-shaped slider. The sliding groove 5212 is a rectangular groove adapted to the height and width of the sliding body 5221. A second spring is provided at both ends connecting the ends of the rectangular groove and the ends of the sliding body 5221.

[0032] The sliding groove 5222 extends from the front end to the middle along the direction of the sliding groove 5212, and the rear end of the sliding groove 5222 is provided with a release hole 5224 adapted to the blocking block 51. The diameter of the release hole 5224 is larger than the outer diameter of the blocking block 51. The release hole 5224 is an inverted trapezoidal frustum hole that is wider at the top and narrower at the bottom, thereby enabling the blocking block 51 to pass from one side of the slide body 5221 to the other side. The end of the slide body 5221 has a protruding protrusion extending outward or upward, and the protrusion extends out of the connecting seat 521. The connecting seat 521 is provided with a straight groove for the protrusion to extend and slide, so as to realize the function of manually controlling the position of the slide body 5221 through the manual operating part 5223. Pushing upward Move the lifting column 531 so that the insertion slot is at the same horizontal level as the sliding seat 522. Under the push of the second spring, the front end of the sliding seat body 5221 is inserted into the insertion slot. At this time, the disengagement hole 5224 and the through hole 5211 are coaxially arranged. One end of the metal wire 41 with the blocking block 51 is passed from the lower end of the through hole 5211 upwards to the upper side of the sliding seat body 5221. Manually control the position of the sliding seat body 5221 and pull it towards the end of the sliding slot 5212. The front end of the sliding seat body 5221 leaves the insertion slot, releasing the force on the lifting column 531. The insertion slot is lower than the... The height of the sliding groove 5212 is adjusted, and the manual operating part 5223 is released. Under the action of the second spring, the slide body 5221 moves to the front end position of the sliding groove 5212. The front end of the slide body 5221 abuts against the outer side wall of the lifting column 531. The positions of the blocking block 51 and the metal wire 41 remain unchanged, so that the blocking block 51 is located above the position where the sliding groove 5222 is set on the slide body 5221. The width of the sliding groove 5222 is adapted to the size of the metal wire 41, allowing only the metal wire 41 to slide relative to each other. Therefore, the lower end of the blocking block 51 is abutted by the slide body 5221, thereby realizing the installation of the blocking block 51. When the hanger frame 1 is lifted by the lifting equipment, the counterweight beam 32 is lifted by the blocking block 51. The blocking block 51 is prevented from descending due to the obstruction of the body 5221, and the blocking block 51 is also restricted by the through hole 5211, making it less prone to shaking. The metal wire 41 is confined within the through hole 5211. Therefore, the counterweight beam 32 experiences less shaking when being lifted and transported, but it can still apply force to the geomembrane 2. In some embodiments, after the blocking block 51 is installed in the through hole 5211, plastic blocks can be inserted into the upper and lower ports of the through hole 5211 to further reduce the shaking of the metal wire 41. When the frame 1 of the hanger falls to the bottom of the underground trench, the lifting column 531 moves upward due to the support force of the bottom of the underground trench. When the insertion slot moves to the same horizontal height as the sliding slot 5212, the front end of the sliding block body 5221 is reinserted into the insertion slot.At this time, the through hole 5211 and the disengagement hole 5224 are coaxial. As the hanger frame 1 rises, the blocking block 51 disengages from the connecting seat 521 along the through hole 5211.

[0033] Please refer to the attached document. Figure 8 The present invention also provides a laying method, which uses the aforementioned landfill vertical geomembrane laying device to lay the geomembrane 2, and the installation steps are as follows: First, S101: Before laying the geomembrane 2 using the laying device of the present invention, the underground trench needs to be constructed in the area. First, the construction area is cleared and leveled; then, the guide wall is constructed, including manual excavation of earthwork, fabrication and installation of guide wall reinforcement, and formwork erection, and 110mm diameter PVC sleeves are pre-embedded simultaneously. Then, concrete is poured and cured. After the strength reaches the standard, the formwork is removed to form a standard guide wall structure, thereby completing the construction of the underground trench. Then, the surface of the hanger frame 1 is cleaned of debris, and the geomembrane 2 is symmetrically laid on one side of the hanger frame 1. The position of the geomembrane 2 is adjusted so that the centerline of the geomembrane 2 in the length direction is consistent with the centerline of the hanger frame 1 in the length direction, ensuring that the receiving parts 212 on both sides of the geomembrane 2 extend evenly from the long straight rod 111 of the hanger frame 1 by a distance, which is 20cm in this embodiment.

[0034] S102: Place the rigid beam 31 (i.e., the steel pipe) at the upper end of the geomembrane 2, making the axis of the rigid beam 31 parallel to the upper edge of the geomembrane 2; place the rigid beam 31 (i.e., the cement crossbeam) at the lower end of the geomembrane 2, leaving a 5-10cm gap between both ends of the rigid beam 31 and the receiving part 212 of the geomembrane 2, leaving a 5-10cm gap between both ends of the counterweight beam 32 and the receiving part 212; one end of the metal wire 41 passes through the ring on the rigid beam 31, and the other end passes through the geomembrane 2. Similarly, with the pre-set folded edge perforation, one end of the metal wire 41 passes through the ring on the counterweight beam 32, and the other end passes through the pre-folded edge perforation of the geomembrane 2. Then, the metal wire 41 is used to fix the rigid beam 31 to the upper end of the hanger frame 1 by binding or connecting. The counterweight beam 32 is fixed to the lower end of the hanger frame 1 by binding or connecting. The hanger frame 1 with the auxiliary release structure 5 can fix the counterweight beam 32 to the hanger frame 1 through the auxiliary release structure 5.

[0035] S103: Check the reliability of the connection of the lifting auxiliary points, the first lifting point 121, the second lifting point 122, and the third lifting point 123. Connect the hook of the lifting equipment to all the lifting auxiliary points through the wire rope to ensure that the wire rope is evenly stressed. Start the lifting equipment and slowly lift the frame 1. Adjust the attitude of the frame 1 to a vertical position and lift the frame 1 above the underground trench.

[0036] S104: Control the lifting equipment to slowly lower the upper set of scaffold frames 1 vertically into the underground trench, controlling the lowering speed to avoid excessive speed causing the geomembrane 2 to sway. When the scaffold frame 1 is completely lowered, the upper end of the scaffold frame 1 is 1.5m from the bottom surface. Ground workers support it to maintain the verticality of the upper set of scaffold frames 1. Since the construction of the underground trench requires a certain amount of time, there is a construction scenario where the underground trench for laying the first or previous geomembrane 2 has been excavated and the first geomembrane 2 has been laid... Membrane 2 has been erected in the underground trench, while the adjacent underground trench has not yet been completed. In cases of construction breaks such as after work or at night, requiring a halt to subsequent work, the interruption construction mode can be activated: First, disconnect the detachable fixing piece 4 connecting the hanger frame 1 and the counterweight support 3, remove the hanger frame 1 from the underground trench, and hoist it away from the site for safekeeping. Then, temporarily fix the rigid beam 31 at the upper end of the geomembrane 2 to the upper end of the underground trench to ensure that the geomembrane 2 maintains its preset vertical position during construction breaks. To enhance its temporary stability, partial backfilling can be carried out on one or both sides of the geomembrane 2. After the adjacent or remaining underground trenches are completed, backfilling can be carried out on both sides of the first set of geomembranes 2, retaining the interlocking structure 21 on its outer side to facilitate assembly with the next set of geomembranes 2. Lift the next set of assembled hanger frames 1 directly above the previous set of hanger frames 1 that is already in place. Adjust the height of the next set of hanger frames 1. With the help of the lifting equipment and the assistance of the ground staff, manually fine-tune the height of the lower end of the male buckle of the next set of geomembrane 2 and the upper end of the female buckle of the previous set of geomembrane 2.

[0037] S105: The lifting equipment slowly and vertically lowers the gantry frame 1 until the next set of gantry frames 1 falls into the underground trench.

[0038] S106: Remove the detachable fastener 4, separating both the rigid beam 31 and the counterweight beam 32 from the hanger frame 1. Ground workers use the portion of the hanger frame 1 above ground level to cut the rigid beam 31 of the upper geomembrane 2 from the metal wire 41 of the hanger frame 1. Workers inside the underground trench cut the cement crossbeam of the upper geomembrane 2 from the metal wire 41 of the hanger frame 1. Remove the rigid beam 31 from the upper end of the geomembrane 2 and fix it to the ground at the upper end of the underground trench as a reverse counterweight for the upper end of the geomembrane 2. To prevent the upper end of geomembrane 2 from sliding into the underground trench, counterweight beam 32 naturally falls to the bottom of the underground trench and continuously provides longitudinal tension to geomembrane 2, keeping it vertical. The lifting equipment is then used to lift the lifting frame 1, remove it from the underground trench, and place it in a pre-designated cleaning area on the ground. After cleaning, it awaits the next laying of geomembrane 2. Steps S101-S106 are repeated until the laying of geomembrane 2 in the entire underground trench is completed. In some laying scenarios, due to construction speed limitations, there may be... S107: Fill both sides of the geomembrane 2 in the underground trench with impermeable material. A soil-bentonite mixture can be used, but is not limited to. After the filling material is fixed in the underground trench, the rigid beam 31 fixed at the upper end of the geomembrane 2 can be disassembled. If iron wire is used to connect the geomembrane 2 to the steel pipe, the iron wire can be cut directly. The steel pipe can be reused and installed on other geomembranes 2.

Claims

1. A vertical geomembrane laying device for a landfill, wherein the landfill has underground trenches, characterized in that, include The frame and geomembrane are provided, wherein the frame is configured to move up and down along the underground trench; the geomembrane is laid on one side of the frame and interlocking structures are provided on both longitudinal sides of the geomembrane. Two sets of counterweight supports are respectively installed at the two longitudinal ends of the geomembrane; A detachable fastener is configured to connect the hanger frame and the counterweight support to temporarily fix the geomembrane to the hanger frame; When the geomembrane is lowered, the interlocking structure is interlocked with the interlocking structure of the adjacent geomembrane. After the geomembrane is lowered into place, the detachable fixing member can be released to separate the geomembrane from the hanging frame; and the two sets of counterweight support members apply longitudinal tension to the geomembrane to keep the geomembrane in a vertical and taut state.

2. The landfill vertical geomembrane laying device according to claim 1, characterized in that, The two sets of counterweight support components are a rigid beam and a counterweight beam, respectively; After the geomembrane is lowered into place, the rigid beam is fixed to the upper end of the underground trench, and the counterweight beam is set on the bottom surface of the underground trench.

3. The landfill vertical geomembrane laying device according to claim 2, characterized in that, The hanging frame includes a rectangular frame, and a number of lifting auxiliary lifting points are provided on the side of the rectangular frame away from the geomembrane, which are symmetrically arranged along the central axis of the length of the rectangular frame. The height of the rectangular frame is configured to be no less than the depth of the underground trench.

4. The landfill vertical geomembrane laying device according to claim 3, characterized in that, The lifting auxiliary hoisting points include: The first lifting point is located at the upper end of the rectangular frame; The second lifting point is located at the middle part of the rectangular frame; The third lifting point is located at the lower end of the rectangular frame.

5. The landfill vertical geomembrane laying device according to claim 4, characterized in that, The interlocking structure includes an E-type lock, which includes a male buckle disposed on one side of the geomembrane and a female buckle disposed on the other side of the geomembrane. The male buckle and the female buckle are designed to be interlocked and connected.

6. The landfill vertical geomembrane laying device according to claim 5, characterized in that, The geomembrane is configured as a rectangle; Wherein, the length direction of the geomembrane is the same as the depth of the underground trench; The width of the geomembrane is wider than the width of the rectangular frame.

7. The landfill vertical geomembrane laying device according to claim 6, characterized in that, The detachable fastener includes a metal wire, one end of which is fixedly connected to the counterweight support, and the other end of which is detachably connected to the hanger frame.

8. The landfill vertical geomembrane laying device according to claim 7, characterized in that, It also includes an auxiliary disengagement structure, which comprises: A blocking block, which is fixedly disposed on the metal wire; A snap-fit ​​disengagement structure is configured to snap-fit ​​into the blocking block; A lifting trigger structure includes a lifting column, which is slidably disposed at the lower end of a rectangular frame. The rectangular frame is provided with a lifting groove for the lifting column to slide in. The upper end of the lifting groove is elastically connected to the upper end of the lifting column. The lifting column is provided with a trigger part. When the lower end of the hanger frame contacts the bottom surface of the underground slot, the lifting column moves from bottom to top along the lifting slot, and the triggering part moves with the lifting column to a designated position to release the locking and disengaging structure from limiting the blocking block.

9. The landfill vertical geomembrane laying device according to claim 8, characterized in that, The snap-on disengagement structure includes: A connecting seat is provided on the side of the lower end of the rectangular frame away from the geomembrane. The connecting seat has a through hole that runs vertically through the frame. The metal wire passes through the through hole. The blocking block is slidably disposed in the through hole. The connecting seat has a sliding groove that is perpendicular to and connected to the through hole. A sliding seat, the sliding seat including a sliding seat body, a wire guide groove disposed on the sliding seat body and adapted to the metal wire, and a hand-operated part disposed on the upper end of the sliding seat body; The slide block body is slidably disposed within the sliding groove; The sliding groove extends along the direction of the sliding groove, and the rear end of the sliding groove is provided with a release hole that is adapted to the blocking block. The upper end of the manual operating part extends out of the connecting seat; The trigger part is configured as an insertion slot adapted to be inserted into the front end of the slide body. When the front end of the slide body is inserted into the insertion slot, the release hole and the through hole are coaxially arranged, and the blocking block is disengaged from the connecting seat along the through hole.

10. A laying method, characterized in that, The steps of using the vertical geomembrane laying device for landfills as described in claim 7 include: S101: Lay the geomembrane symmetrically on the frame of the hanger, with the centerline of the geomembrane along its length aligned with the centerline of the frame along its length. S102: The rigid beam is temporarily fixed to the upper end of the hanger frame using a detachable fastener, and the counterweight beam is temporarily fixed to the lower end of the hanger frame using a detachable fastener; S103: After connecting the hooks on the lifting equipment to all the lifting auxiliary points, lift the frame of the lifting device to the top of the underground trench; S104: Lower the previous set of scaffold frames vertically into the underground trench. Ground staff keep the previous set of scaffold frames vertical and lift the next set of scaffold frames above the first set of scaffold frames. With the cooperation of the lifting equipment and staff, connect and insert the female buckle on the next set of geomembrane with the male buckle on the previous set of geomembrane. S105: The lifting equipment slowly and vertically lowers the hanger frame until the next set of hanger frames falls into the underground trench; S106: Remove the detachable fasteners, separate the rigid beam and counterweight beam from the hanger frame, fix the rigid beam to the ground, lift the hanger frame and move it out of the underground trench, place it on the ground, wait for the geomembrane to be laid, and repeat S101-106. S107: Filling material on both sides of the geomembrane.

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