A construction method for a vertical seepage barrier frame and a vertical seepage barrier wall.

Abstract

This invention discloses a vertical anti-seepage frame and a construction method for a vertical anti-seepage wall, belonging to the field of pollutant treatment engineering technology. The vertical anti-seepage frame includes: an inner frame, an outer frame, and a GCL waterproof blanket installed between the outer and inner frame; it also includes a spacing adjustment unit for adjusting the spacing between the inner and outer frame; and a width adjustment unit for adjusting the width of the inner and outer frame. This invention utilizes the inner and outer frame to flatten the GCL waterproof blanket, adjusts the spacing between the inner and outer frame through the spacing adjustment unit, and ensures that the sides of adjacent vertical anti-seepage frames are tightly joined to form an anti-seepage wall through the width adjustment unit. This also ensures a tight bond between the inner and outer frame and the compacted bentonite, guaranteeing a vertical anti-seepage effect and ensuring a tight and reliable connection between the vertical anti-seepage frames.

Description

Technical Field

[0001] This invention belongs to the field of pollutant treatment engineering technology, and more specifically, relates to a construction method for a vertical anti-seepage frame and a vertical anti-seepage wall. Background Technology

[0002] Vertical seepage prevention systems for solid waste landfills construct a sealing layer around the landfill. This primarily utilizes the impermeable or weakly permeable layers existing beneath the landfill foundation, upon which the vertical sealing layer is built. The goal is to control landfill gas and leachate within the landfill, while also preventing surrounding groundwater from flowing into the landfill. Based on the landfill's engineering and hydrogeological characteristics, the vertical seepage prevention system utilizes independent hydrogeological units or impermeable or weakly permeable layers existing beneath the landfill foundation. Vertical seepage prevention works (such as seepage barriers, seepage barriers, grouting curtains, etc.) are installed on one side or around the landfill to contain leachate within the landfill for controlled drainage. This prevents leachate from seeping into the surrounding area and polluting groundwater, and also prevents the uncontrolled release of landfill gas. Vertical seepage prevention systems are commonly used in valley-type landfills.

[0003] GCL waterproofing blanket, or Sodium Bentonite Geosynthetic Clay Line, is a new type of waterproofing material. It consists of natural sodium bentonite wrapped with two layers of geotextile and reinforced with needle punching. Its seepage prevention mechanism is as follows: the sodium-based bentonite particles used in the blanket can expand more than 24 times their original size when exposed to water, forming a uniform, highly viscous colloidal system with low filtration loss. Under the constraint of the two layers of geotextile, the bentonite expands from a disordered state to an ordered one. This continuous water absorption and expansion results in the bentonite layer becoming dense, thus achieving a waterproof effect. During vertical seepage prevention construction, a hydraulic grab trenching machine is used to create trenches and apply mud slurry to the walls. The GCL waterproofing blanket is then laid tightly against the outer trench wall. Finally, underwater conduits for cement-bentonite wall material are poured, ultimately forming a continuous GCL composite vertical flexible seepage barrier wall. The method of waterproofing by tightly adhering the GCL waterproofing blanket to the side wall is actually quite difficult to lay. Moreover, there will be gaps between the GCL waterproofing blankets. When the GCL waterproofing blankets are bonded together with adhesive, leakage gaps are easy to appear at the joints of the GCL waterproofing blankets as the water pressure increases. Therefore, the actual seepage prevention effect is not high and the stability is insufficient.

[0004] After retrieval, patent CN218405316U discloses an anti-seepage treatment structure for earth-rock dams, which includes a support layer and an anti-seepage membrane layer arranged on the water-facing side of the support layer; the support layer includes a plurality of steel meshes, each steel mesh includes a frame body and a mesh body arranged in the hollow part of the frame body, and a splicing structure for splicing adjacent steel meshes is arranged on the frame body. This application has the effect of avoiding the over-stretching damage of the anti-seepage membrane caused by soil settlement, thereby avoiding the influence on the anti-seepage effect of the earth-rock dam.

[0005] Patent CN221741133U is a construction device for stacking polyester gabion meshes. It includes a cage-shaped frame formed by juxtaposing and assembling two identical single-frame bodies, and the two single-frame bodies are detachably connected; the single-frame body includes a "day"-shaped top frame and a "day"-shaped bottom frame, and a plurality of connecting columns are installed between the top frame and the bottom frame, and a plurality of legs are installed at the bottom of the bottom frame; two groups of front and rear guiding slide rails are installed at the inner bottom of the single-frame body, and a support backing plate that can slide in and out is installed in the guiding slide rails.

[0006] However, due to the large size of the anti-seepage wall, the splicing between multiple GCL waterproof blankets needs to be realized, and the above patents cannot realize the adjustment of the size of the anti-seepage wall and the distance between multiple anti-seepage walls. Summary of the Invention

[0007] 1. Problems to be Solved

[0008] Aiming at the problem that the existing device cannot adjust the size and distance of the anti-seepage wall, the present invention provides a vertical anti-seepage frame and a construction method for a vertical anti-seepage wall. The vertical anti-seepage frame arranges GCL waterproof blankets in the gap between the inner frame body and the outer frame body to form an anti-seepage wall with adjustable size, and adjacent vertical anti-seepage frames are closely combined.

[0009] 2. Technical Solutions

[0010] To solve the above problems, the technical solutions adopted by the present invention are as follows:

[0011] The present invention proposes a vertical anti-seepage frame, which includes:

[0012] An inner frame body, which is integrally in the shape of a rectangular frame;

[0013] An outer frame body, which coincides with the contour of the inner frame body;

[0014] A GCL waterproof blanket, which is installed in the interval between the outer frame body and the inner frame body;

[0015] A spacing adjustment unit, which is used to adjust the spacing between the inner frame body and the outer frame body;

[0016] The width adjustment unit is used to adjust the width of the outer frame and the inner frame, so that the sides of adjacent vertical waterproof frames are close together and tightly connected.

[0017] Furthermore, the vertical waterproofing frame is provided with at least two layers of GCL waterproofing blankets spaced apart from each other.

[0018] Furthermore, the outer frame and the bottom of the inner frame are provided with sealing units, which are used for sealing the bottom of the groove.

[0019] Furthermore, the sealing unit includes a flexible sealing sheet, which has at least two sets of slots along its length. The bottom sides of the outer frame and the inner frame are engaged in the slots. A first telescopic section is provided between the slots. The cross-section of the first telescopic section is wavy or serrated, so that the first telescopic section has a spring-like structure. Preferably, a steel wire or other material is embedded in the first telescopic section to realize the extension and retraction of the length of the flexible sealing sheet.

[0020] Furthermore, to ensure that the GCL waterproof blanket can achieve a tight anti-seepage effect, the flexible sealing sheet is provided with multiple sets of snap-fit ​​grooves, one end of the GCL waterproof blanket extends into the snap-fit ​​groove, and the snap-fit ​​groove is provided with a clamping cover plate.

[0021] Furthermore, to achieve adjustment of the distance between the inner and outer frame bodies, a spacing adjustment unit is provided between the inner and outer frame bodies, allowing for a sliding fit between the inner and outer frame bodies of the vertical waterproof frame. The spacing adjustment unit includes guide rods mounted on the inner frame body, which are perpendicular to the inner frame body and arranged in an array. The outer frame body has conduits corresponding to the guide rods. Both sides of the GCL waterproof blanket have through-tubes arranged corresponding to the conduits. Gaskets are provided at the ends of the through-tubes, and the gaskets are in contact with the GCL waterproof blanket. Each through-tube includes an inner tube and an outer tube. The inner tube has a sealing protrusion on the outer wall of the conduit, which fits tightly against the outer wall of the conduit. The outer tube has a protrusion on the outer wall of the guide rod, which is sleeved on the outer wall of the guide rod. The outer tube is sleeved on the inner tube, and the inner and outer tubes are sealed to form a sliding fit.

[0022] Furthermore, the number and position of the guide rods on the inner frame correspond to the number and position of the conduits on the outer frame, and they are arranged in an array. The through-tubes are provided on both sides of the GCL waterproof blanket, and the position of the through-tubes corresponds to the position of the conduits.

[0023] Furthermore, the spacing adjustment unit also includes a wedge block disposed between the inner frame and the outer frame. The wedge block has an inclined surface and a top-pressing arc plate. The top-pressing arc plate abuts against the inclined surface of the wedge block. After the two sets of vertical anti-seepage frames are installed, the spacing between the inner frame and the outer frame can be increased by the abutting between the top-pressing arc plate and the inclined surface of the wedge block.

[0024] Furthermore, to ensure the sealing of the joints of the vertical anti-seepage frames, jointing units are provided on both sides of the outer frame and the inner frame, which are used to achieve a sealed joint between adjacent vertical anti-seepage frames.

[0025] The connecting unit includes a connecting flexible sheet, which is disposed on both sides of the outer frame and the inner frame. The connecting flexible sheet has at least two sets of connecting grooves, and the sides of the outer frame and the inner frame are respectively engaged in the connecting grooves. The connecting flexible sheet is provided with a second telescopic section, which is wavy. The connecting flexible sheet on both sides is provided with an interlocking protrusion and an interlocking groove, and the interlocking protrusion between adjacent vertical anti-seepage frames is engaged in the interlocking groove.

[0026] Furthermore, the outer frame extends outwards from both sides of the GCL waterproof blanket.

[0027] Furthermore, the second telescopic section on the combined flexible sheet is embedded with steel wire, making the second telescopic section spring-like.

[0028] Furthermore, a third telescopic section extends outward from the outer side of the flexible sheet. The third telescopic section is arranged along the width direction of the outer frame. The cross-section of the third telescopic section is wavy. Two sets of the third telescopic section are arranged in parallel at intervals. The fitting protrusion is located on one side of the third telescopic section and is connected to the extension end of the third telescopic section as a whole. The width adjustment unit includes an adjustment wedge block located on the outer side of the third telescopic section. The adjustment wedge block has an inclined surface. An adjustment frame is provided on the adjustment wedge block. The adjustment frame abuts against the inclined surface of the adjustment wedge block and moves the two sets of frame units away from each other.

[0029] Furthermore, the adjustment frame is a channel-shaped steel plate, and the steel plate abuts against the inclined surface of the adjustment wedge.

[0030] The method for constructing a vertical seepage barrier wall using the aforementioned seepage barrier frame includes the following steps:

[0031] Step 1: Use a trenching machine to trench the base surface to be constructed, and use mud pumping equipment to protect the formed trench walls;

[0032] Step 2: Clean the mud in the trench to ensure that the bottom of the trench is clean and flat, and avoid stones or protruding foreign objects puncturing the GCL waterproofing blanket.

[0033] Step 3: Lay a GCL waterproof blanket at the bottom of the trench, ensuring that the GCL waterproof blanket is laid flat on the bottom of the trench.

[0034] Step 4: Use hoisting equipment to hoist the upper part of the vertical seepage barrier frame and place it into the trench. Arrange the vertical seepage barrier frame neatly along the length of the trench so that the bottom of the vertical seepage barrier frame is in contact with the GCL waterproof blanket.

[0035] Step 5: Fill the space between the outer and inner frames of the vertical anti-seepage frame and the trench wall with anti-seepage bentonite. Compact the filled anti-seepage bentonite with extrusion equipment so that the outer and inner frames of the vertical anti-seepage frame are integrated with the anti-seepage bentonite.

[0036] Step Six: Use equipment to adjust the width of the vertical anti-seepage frame so that the sides of the vertical anti-seepage frame are sealed together as one unit. Adjust the spacing between the inner and outer frame bodies of the vertical anti-seepage frame so that the inner and outer frame bodies are integrated with the anti-seepage bentonite, thereby forming a stable vertical anti-seepage wall in the trench.

[0037] 3. Beneficial effects

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] (1) The vertical anti-seepage frame of the present invention comprises an inner frame body and an outer frame body forming a rigid whole. A GCL waterproof blanket is set in the gap between the inner frame body and the outer frame body. The inner frame body and the outer frame body can be used to flatten the GCL waterproof blanket to form an anti-seepage wall.

[0040] (2) The vertical anti-seepage frame of the present invention is hoisted into the pre-constructed trench. The anti-seepage bentonite is filled and compacted in the gap. The distance between the inner frame and the outer frame of the vertical anti-seepage frame is adjusted by the adjustment unit so that the inner frame and the outer frame are tightly bonded to the compacted bentonite. The width of the outer frame and the inner frame is adjusted by the width adjustment unit so that the sides of the adjacent vertical anti-seepage frames are tightly bonded to form an anti-seepage wall. While facilitating the laying construction, it ensures the vertical anti-seepage effect and makes the vertical anti-seepage frames tightly and reliably bonded. Attached Figure Description

[0041] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, unless specifically indicated, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0042] Figure 1 and Figure 2 These are schematic diagrams of the vertical seepage-proof frame of the present invention from two different perspectives.

[0043] Figure 3 This is a top view of the two sets of vertical seepage-proof frames of the present invention in the installation state;

[0044] Figure 4 This is a front view of the two sets of vertical seepage-proof frames of the present invention;

[0045] Figure 5 This is a schematic diagram of the structure of the adjustment frame of the present invention;

[0046] Figure 6 This is a schematic cross-sectional view of the structure of the vertical seepage-proof frame of the present invention, which combines a flexible sheet and a GCL waterproof blanket.

[0047] Figure 7 and Figure 8 These are schematic diagrams of the vertical seepage-proof frame structure of the present invention in conjunction with the flexible sealing sheet from two different perspectives.

[0048] Figure 9 and Figure 10 This is a schematic diagram showing two structural states of the vertical seepage prevention frame of the present invention;

[0049] Figure 11 This is a schematic diagram of the structure of the GCL waterproof blanket and the through-tube of the present invention;

[0050] Figure 12 This is a front view of the GCL waterproof blanket and the through-tube of the present invention.

[0051] Figure 13 This is a schematic diagram of the planar structure of the flexible sealing sheet of the present invention;

[0052] Figure 14 This is a schematic diagram of the planar structure of the present invention combined with the flexible sheet;

[0053] In the picture:

[0054] 10. Inner frame; 11. Guide rod;

[0055] 20. Outer frame; 21. Conduit; 22. Wedge; 23. Top pressure arc plate;

[0056] 30. GCL waterproof blanket; 31. Through tube; 311. Gasket; 312. Inner tube; 313. Outer tube;

[0057] 40. Flexible sealing sheet; 41. Slot; 411. Snap-fit ​​groove; 412. Clamping cover plate; 42. First telescopic section;

[0058] 50. Flexible sheet; 51. Connecting groove; 52. Second telescopic section; 53. Fitting protrusion; 54. Fitting groove; 55. Third telescopic section; 56. Adjusting frame; 57. Adjusting wedge. Detailed Implementation

[0059] The following detailed description of exemplary embodiments of the invention is taken with reference to the accompanying drawings, which form part of the description and illustrate exemplary embodiments in which the invention may be practiced. While these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be implemented and various changes may be made to the invention without departing from the spirit and scope thereof. The more detailed description of embodiments of the invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and not restrictive of the description of the features and characteristics of the invention, to suggest the best mode for carrying out the invention, and is sufficient to enable those skilled in the art to practice the invention. Therefore, the scope of the invention is defined only by the appended claims.

[0060] It should be understood that the following text is merely used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection specifically claimed by the present invention. As used herein, the terms "parallel" and "perpendicular" are not limited to their strict geometric definitions, but include tolerance for reasonable and inconsistent machining or human errors.

[0061] The following is in conjunction with the appendix Figures 1 to 14 The vertical seepage barrier of the present invention will be described in detail below:

[0062] Example

[0063] The following is in conjunction with the appendix Figures 1 to 14 The following is a detailed description of the construction method of the vertical anti-seepage frame and vertical anti-seepage wall of the present invention:

[0064] Existing seepage prevention methods, when used for specific areas such as dams or to prevent seepage from pollutants, typically involve a pre-installed seepage prevention layer at the bottom of the area and a vertical seepage prevention layer around the perimeter. However, with increasing service life, leakage can still occur at these vertical seepage prevention layers, necessitating repair to prevent further leakage. Repairing the vertical seepage prevention layer usually involves excavating a trench around the pre-installed layer, laying a waterproof blanket, and filling it with impermeable bentonite to achieve seepage prevention. However, this simple method of laying the waterproof blanket is prone to gaps, and the overlapping sections of the blankets, bonded with adhesive, have a relatively short lifespan. When the water pressure or pollutant pressure in the area is excessive, leakage can easily occur through these gaps. Therefore, existing seepage prevention methods still have significant instability.

[0065] Based on this, the present invention proposes a vertical seepage prevention frame, which includes:

[0066] The inner frame is 10, and the overall shape is a rectangular frame.

[0067] The outer frame 20 is installed on one side of the inner frame 10 and matches the outline of the inner frame 10.

[0068] GCL waterproof blanket 30 is installed in the gap between outer frame 20 and inner frame 10;

[0069] A spacing adjustment unit is used to adjust the spacing between the inner frame 10 and the outer frame 20.

[0070] The width adjustment unit is used to adjust the width of the outer frame 20 and the inner frame 10.

[0071] like Figure 3 and Figure 4 As shown, in one embodiment, both the inner frame 10 and the outer frame 20 are made of rigid rust-proof metal material. Both the inner frame 10 and the outer frame 20 are rectangular frames. A GCL waterproof blanket 30 is provided in the frame area between the inner frame 10 and the outer frame 20. The GCL waterproof blanket 30, the inner frame 10 and the outer frame 20 form an integral wall panel structure, which can effectively block the leakage of liquid pollutants or water flow.

[0072] The vertical seepage-proof frame is provided with at least two layers of GCL waterproof blankets 30 spaced apart from each other. When the first layer of GCL waterproof blanket 30 comes into contact with water or pollutants, the first layer of GCL waterproof blanket 30 can form a dense sealing layer. The second layer of GCL waterproof blanket 30 can play a stabilizing role and can basically prevent water penetration.

[0073] In the actual construction process, vertical trenches are first opened in the designated area using trenching equipment. The trench walls and bottom are then covered with mud using mud circulation equipment and cleaned. A waterproof blanket is then laid at the bottom of the trench. Vertical anti-seepage frames are then hoisted into the trench using hoisting equipment, arranging them at intervals along the length of the trench. Anti-seepage bentonite is filled into the gaps between the trench and the vertical anti-seepage frames and compacted. The spacing between the inner frame 10 and the outer frame 20 is adjusted using a spacing adjustment unit, ensuring full contact and abutment between the inner and outer frames and the compacted anti-seepage bentonite to further improve the anti-seepage effect. The width of the outer frame 20 and the inner frame 10 is adjusted using a width adjustment unit, bringing the vertical anti-seepage frames closer together and squeezing them against each other for further sealing, preventing contaminants or water from leaking out from the joints.

[0074] The outer frame 20 and the inner frame 10 are provided with sealing units on their bottom sides, and the sealing units are used to seal with the bottom of the groove.

[0075] The sealing unit can be a flexible structure with a certain deformation capacity to ensure a tight bond between the bottom sides of the outer frame 20 and the inner frame 10 and the laid waterproof blanket, thereby avoiding leakage problems at the bottom of the vertical anti-seepage frame and the bottom of the trench.

[0076] To ensure a tight bond between the bottom sides of the outer frame 20 and the inner frame 10 and the laid waterproof blanket, such as Figure 13 As shown, the sealing unit includes a flexible sealing sheet 40, which has at least two sets of slots 41 arranged along the length of the flexible sealing sheet 40. The bottom sides of the outer frame 20 and the inner frame 10 are engaged in the slots 41. The flexible sealing sheet 40 has a first telescopic section 42, the cross-section of which is wavy or sawtooth.

[0077] In one embodiment, see Figure 9 , Figure 10 and Figure 13The flexible sealing sheet 40 is made of flexible rubber or corrosion-resistant steel sheet. The bottom sides of the outer frame 20 and the inner frame 10 are respectively inserted into two sets of slots 41 to prevent leakage. The cross-section of the first telescopic section 42 is wavy, which makes the first telescopic section 42 have a spring-like structure. Steel wire and other materials are embedded in the first telescopic section 42, so that the first telescopic section 42 is in a tightened state under normal conditions. When the distance between the outer frame 20 and the inner frame 10 increases, the first telescopic section 42 is in an expanded state, so that the first telescopic section 42 can adapt to the change in the distance between the outer frame 20 and the inner frame 10, avoiding gaps between the vertical anti-seepage frame and the anti-seepage bentonite, so that the outer frame 20 and the inner frame 10 are fully bonded to the anti-seepage bentonite.

[0078] To ensure that the GCL waterproof blanket 30 can achieve a tight anti-seepage effect, the flexible sealing sheet 40 is provided with multiple sets of snap-fit ​​grooves 411. One end of the GCL waterproof blanket 30 extends into the snap-fit ​​groove 411. The snap-fit ​​groove 411 is provided with a clamping cover plate 412. The clamping cover plate 412 is snapped onto both sides of the GCL waterproof blanket 30. Through the cooperation of bolts or wedges, the GCL waterproof blanket 30 is firmly sealed to avoid gaps.

[0079] In one embodiment, the lower end of the GCL waterproof blanket 30 extends into the snap-fit ​​groove 411 and is closed by the clamping cover plate 412, thereby ensuring the effective combination of the GCL waterproof blanket 30 and the entire inner frame 10 with the outer frame 20 to ensure the seepage prevention effect.

[0080] To guide the sliding between the inner frame 10 and the outer frame 20 of the vertical waterproofing frame, a spacing adjustment unit is provided between the inner frame 10 and the outer frame 20. The spacing adjustment unit includes guide rods 11 set on the inner frame 10. The guide rods 11 are perpendicular to the inner frame 10 and arranged in an array on the inner frame 10. The outer frame 20 is provided with conduits 21 corresponding to the guide rods 11. The two sides of the GCL waterproof blanket 30 are provided with through pipes 31 arranged corresponding to the conduits 21. The end of the through pipe 31 is provided with a gasket 311. The gasket 311 is in contact with the GCL waterproof blanket 30. The gaskets 311 of the two sets of through pipes 31 are fixed together.

[0081] Specifically, the through tube 31 includes an inner tube 312 and an outer tube 313. The inner tube 312 is a sealing protrusion on the outer wall of the conduit 21, which fits tightly against the outer wall of the conduit 21. The outer tube 313 is a protrusion on the outer wall of the guide rod 11, which is sleeved on the outer wall of the guide rod 11. The outer tube 313 is sleeved on the inner tube 312, and the inner tube 312 and the outer tube 313 are sealed to form a sliding fit.

[0082] In one embodiment, the number and position of the guide rods 11 on the inner frame 10 correspond to the number and position of the conduits 21 on the outer frame 20, and they are arranged in an array. The through-tubes 31 are provided on both sides of the GCL waterproof blanket 30, and the positions of the through-tubes 31 correspond to the positions of the conduits 21. Therefore, the conduits 21 pass through the through-tubes 31, which allows the GCL waterproof blanket 30 to be in a flattened state, thus making the GCL waterproof blanket 30 present a flattened sheet structure. When the GCL waterproof blanket 30 combines with liquid pollutants or water flow, it can form a dense protective film. The GCL waterproof blanket 30 is spaced apart on both sides, which allows the inner frame 10 and the outer frame 20 to form a stable frame structure, thereby achieving vertical seepage prevention.

[0083] When the distance between the inner frame 10 and the outer frame 20 needs to be adjusted, the sealing protrusion on the outer wall of the conduit 21 is sealed against the inner wall of the pipe 31, thereby ensuring that the GCL waterproof blanket 30 is a whole and that the whole is sealed. Similarly, the outer wall of the guide rod 11 is provided with a protrusion, which is sealed against the inner wall of the conduit 21 to prevent liquid contamination from leaking out of the conduit 21.

[0084] When the vertical waterproofing frame is recycled and reused, the GCL waterproofing blanket 30 that has already served its purpose can be replaced with a new one, which significantly reduces the actual usage cost.

[0085] To adjust the distance between the inner frame 10 and the outer frame 20, the distance adjustment unit further includes a wedge 22 disposed between the inner frame 10 and the outer frame 20. The wedge 22 has an inclined surface and a pressing arc plate 23 is provided on the wedge 22. The pressing arc plate 23 abuts against the inclined surface of the wedge 22.

[0086] Specifically, the wedge 22 has a sloping surface that is narrower at the top and wider at the bottom, and the top pressure arc plate 23 is in the shape of a groove plate. The sloping surface of the groove plate cooperates with the sloping surface of the wedge 22. After the two sets of vertical anti-seepage frames are installed, the gap between the inner frame 10 and the outer frame 20 can be increased by the abutting of the top pressure arc plate 23 and the sloping surface of the wedge 22. This allows the inner frame 10 and the outer frame 20 to be tightly bonded to the anti-seepage bentonite on the inner and outer sides, thus avoiding leakage gaps.

[0087] After the vertical anti-seepage frame is hoisted into the trench, the lower end of the vertical anti-seepage frame is combined and abuts against the anti-seepage blanket. The top pressure arc plate 23 is inserted into the gap between the inner frame body 10 and the outer frame body 20 by external equipment, so that the top pressure arc plate 23 abuts against the inclined surface of the wedge block 22, thereby increasing the distance between the inner frame body 10 and the outer frame body 20, so that the inner frame body 10 and the outer frame body 20 can be combined with the compacted bentonite, ensuring the subsequent anti-seepage effect.

[0088] To ensure the sealing of the joints of the vertical anti-seepage frames, the outer frame 20 and the inner frame 10 are provided with jointing units on both sides. The jointing units are used to achieve a sealed joint between adjacent vertical anti-seepage frames.

[0089] The connecting unit is preferably a flexible structure with a certain deformation capacity to ensure a tight connection between the outer frame 20 and the inner frame 10 at both sides, and to adapt to the displacement of the vertical anti-seepage frame along the trench length direction, thereby avoiding leakage problems at the connection position of the vertical anti-seepage frame.

[0090] The connecting unit includes a connecting flexible sheet 50, which is disposed on both sides of the outer frame 20 and the inner frame 10. The connecting flexible sheet 50 is provided with at least two sets of connecting grooves 51. The sides of the outer frame 20 and the inner frame 10 are respectively engaged in the connecting grooves 51. The connecting flexible sheet 50 is provided with a second telescopic section 52, which is wavy. The connecting flexible sheets 50 on both sides are respectively provided with interlocking protrusions 53 and interlocking grooves 54. The interlocking protrusions 53 between adjacent vertical waterproof frames are engaged in the interlocking grooves 54. The two sides of the GCL waterproof blanket 30 extend outward from the outer frame 20, so that a section of GCL waterproof blanket 30 is left at the interlocking point. When the interlocking protrusions 53 are engaged in the interlocking grooves 54, the extended GCL waterproof blanket 30 helps to improve the airtightness.

[0091] In one embodiment, the GCL waterproof blanket 30 extends a relatively long length on both sides, which can adapt to the width changes of the outer frame 20 and the inner frame 10, and prevent the GCL waterproof blanket 30 from being torn.

[0092] The flexible sheet 50 can be made of flexible corrosion-resistant rubber. The second telescopic section 52 on the flexible sheet 50 is embedded with steel wire, so that the second telescopic section 52 is spring-shaped. Under normal conditions, the second telescopic section 52 is shortened, so that the outer frame 20 and the inner frame 10 are in a closed state. When the distance between the outer frame 20 and the inner frame 10 increases, the second telescopic section 52 extends, so that the flexible sheet 50 can adapt to the change in the distance between the outer frame 20 and the inner frame 10.

[0093] The outer side of the flexible sheet 50 is provided with a third telescopic section 55. The third telescopic section 55 is arranged along the width direction of the outer frame 20. The cross-section of the third telescopic section 55 is wavy. Two sets of the third telescopic sections 55 are arranged in parallel at intervals. The third telescopic section 55 and one side of the flexible sheet 50 form a rectangular box structure. The fitting protrusion 53 is located on one side of the third telescopic section 55 and is connected to the extension end of the third telescopic section 55 as a whole. The width adjustment unit includes an adjustment wedge 57 located on the outer side of the third telescopic section 55. The adjustment wedge 57 is provided with an inclined surface. An adjustment frame 56 is provided on the adjustment wedge 57. The adjustment frame 56 abuts against the inclined surface of the adjustment wedge 57 and moves the two sets of frames away from each other.

[0094] Specifically, the adjusting wedge 57 has a sloping surface that is narrower at the top and wider at the bottom, and the adjusting frame 56 is a channel-shaped steel plate. After the vertical anti-seepage frame is installed in the trench, the adjusting frame 56 is squeezed into the upper end of the adjacent vertical anti-seepage frame using equipment, so that the steel plates on both sides of the adjusting frame 56 abut against the sloping surface of the adjusting wedge 57, thereby making the fitting protrusions 53 and fitting grooves 54 of the flexible plates 50 on both sides of the vertical anti-seepage frame integrated into one unit. Figure 3 This allows the GCL waterproof blanket 30 to be positioned between the fitting protrusion 53 and the fitting groove 54, thus achieving the purpose of preventing seepage.

[0095] The method for constructing a vertical seepage barrier wall using the aforementioned seepage barrier frame includes the following steps:

[0096] Step 1: Use a trenching machine to trench the base surface to be constructed, and use mud pumping equipment to protect the formed trench walls;

[0097] Step 2: Clean the mud in the trench to ensure that the bottom of the trench is clean and flat, and avoid stones or protruding foreign objects puncturing the GCL waterproofing blanket.

[0098] Step 3: Lay GCL waterproof blanket 30 at the bottom of the trench, ensuring that the GCL waterproof blanket 30 is laid flat at the bottom of the trench.

[0099] Step 4: Use hoisting equipment to hoist the upper part of the vertical seepage barrier frame and place it into the trench. Arrange the vertical seepage barrier frame neatly along the length of the trench so that the bottom of the vertical seepage barrier frame is in contact with the GCL waterproof blanket 30.

[0100] Step 5: Fill the space between the outer and inner frames of the vertical anti-seepage frame and the trench wall with anti-seepage bentonite. Compact the filled anti-seepage bentonite with extrusion equipment so that the outer and inner frames of the vertical anti-seepage frame are integrated with the anti-seepage bentonite.

[0101] Step Six: Use equipment to adjust the width of the vertical anti-seepage frame so that the sides of the vertical anti-seepage frame are sealed together as one unit. Adjust the spacing between the inner and outer frame bodies of the vertical anti-seepage frame so that the inner and outer frame bodies are integrated with the anti-seepage bentonite, thereby forming a stable vertical anti-seepage wall in the trench.

[0102] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

[0103] The above description is merely a preferred embodiment of this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by replacing the above-mentioned features with technical features with similar functions disclosed in this application (but not limited to) each other.

[0104] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this invention, the other technical features will not be described in detail here.

Claims

1. A vertical impervious frame, characterized in that, The utility model relates to a vertical anti-seepage frame, including: Inner frame body (10); Outer frame body (20) is installed to the side of inner frame body (10) and is contour with inner frame body (10); GCL waterproof blanket (30) is installed in the interval between outer frame body (20) and inner frame body (10); Further including: spacing adjustment unit is located between inner frame body (10) and outer frame body (20), is used for adjusting the spacing between inner frame body (10) and outer frame body (20); Width adjustment unit is used for adjusting the width of inner frame body (10) and outer frame body (20); Spacing adjustment unit is arranged between the inner frame body (10) and the outer frame body (20), so that the inner frame body (10) and the outer frame body (20) of the vertical anti-seepage frame are slidingly connected, the spacing adjustment unit includes a guide rod (11) arranged on the inner frame body (10), the guide rod (11) is perpendicular to the inner frame body (10), and the outer frame body (20) is provided with a guide pipe (21) corresponding to the guide rod (11); The GCL waterproof blanket (30) is provided with a through pipe (31) arranged corresponding to the guide pipe (21), a gasket is arranged at the pipe end of the through pipe (31), the gasket is attached to the GCL waterproof blanket (30), the through pipe (31) includes an inner pipe (312) and an outer pipe (313), the inner pipe (312) is tightly attached to the outer wall of the guide pipe (21), the outer pipe (313) is sleeved on the outer wall of the guide rod (11), the outer pipe (313) is sleeved on the inner pipe (312), and the inner pipe (312) and the outer pipe (313) are sealed to form a sliding fit; The outer frame body (20) and the inner frame body (10) are provided with a combination unit on both sides, which is used for realizing the sealing combination between adjacent vertical anti-seepage frames, the combination unit includes a combination flexible sheet (50), the combination flexible sheet (50) is provided with at least two groups of combination grooves (51), the side edges of the outer frame body (20) and the inner frame body (10) are respectively clamped in the combination grooves (51), and the second telescopic section (52) is arranged between the combination grooves (51); The combination flexible sheet (50) is provided with an embedded protrusion (53) and an embedded groove (54), the embedded protrusion (53) between adjacent vertical anti-seepage frames is clamped in the embedded groove (54), and the third telescopic section (55) is arranged on the outer side of the combination flexible sheet (50); The width adjustment unit includes an adjusting wedge (57) arranged on the outer side of the third telescopic section (55), the adjusting wedge (57) is provided with an inclined surface, the adjusting wedge (57) is provided with an adjusting frame (56), and the adjusting frame (56) is abutted with the inclined surface of the adjusting wedge (57).

2. The vertical diaphragm according to claim 1, characterized in that The outer frame body (20) and the bottom side of the inner frame body (10) are provided with a sealing unit for sealing combination of the groove bottom, the sealing unit comprises a flexible sealing sheet (40), the flexible sealing sheet (40) is provided with at least two groups of clamping grooves (41) in the length direction, the outer frame body (20) and the bottom side of the inner frame body (10) are clamped in the clamping grooves (41), the first expansion section (42) is arranged between the clamping grooves (41), the flexible sealing sheet (40) is provided with a clamping groove (411), and one end of the GCL waterproof blanket (30) extends into the clamping groove (411).

3. The vertical diaphragm according to claim 2, characterized in that, The clamping groove (411) is provided with a clamping cover plate (412).

4. The vertical diaphragm according to claim 3, characterized in that The spacing adjusting unit further comprises a wedge block (22) arranged between the inner frame body (10) and the outer frame body (20), the wedge block (22) is provided with an inclined surface, and the wedge block (22) is provided with a pressing arc piece (23) abutting against the inclined surface of the wedge block (22).

5. A method for constructing a vertical cutoff wall, using the vertical cutoff wall frame according to any one of claims 1 to 4, characterized by, The method comprises the following steps: Step one: groove forming operation is performed on the to-be-constructed base surface by using a grooving machine, and the formed groove wall is protected by using a mud pumping and discharging device; Step two: the mud in the groove is cleaned to ensure that the groove bottom is clean and flat, and to avoid that stones or protruding foreign matters pierce the GCL waterproof blanket (30); Step three: the GCL waterproof blanket (30) is laid on the groove bottom, so that the GCL waterproof blanket (30) is laid flat on the groove bottom; Step four: the upper end of the vertical anti-seepage frame is hoisted by using hoisting equipment, the vertical anti-seepage frame is hoisted into the groove, and is arranged in order along the length direction of the groove, so that the bottom end of the vertical anti-seepage frame abuts against the GCL waterproof blanket (30); Step five: the anti-seepage bentonite is filled between the outer frame body (20) and the inner frame body (10) of the vertical anti-seepage frame and the groove wall, and the filled anti-seepage bentonite is tamped by using extrusion equipment, so that the outer frame body (20) and the inner frame body (10) of the vertical anti-seepage frame are combined with the anti-seepage bentonite as a whole; Step six: the width of the vertical anti-seepage frame is adjusted by using equipment, so that the side surfaces of the vertical anti-seepage frame are combined and sealed as a whole, the spacing of the inner frame body (10) and the outer frame body (20) of the vertical anti-seepage frame is adjusted, so that the inner frame body (10) and the outer frame body (20) are combined with the anti-seepage bentonite as a whole, and a stable vertical anti-seepage wall is formed in the groove.

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