A kind of directional drainage composite geotextile

Abstract

The present invention provides an oriented drainage composite geotextile, which relates to the technical field of slope soil protection. It includes a plurality of independent geotextile components. Each independent geotextile component is provided with a fixing mechanism, a drainage component and a diversion mechanism. And an upper geomembrane is arranged on the surface layer of the independent geotextile component. An anti-seepage layer is filled at the bottom of the upper geomembrane. A lower geomembrane is attached to the top of the anti-seepage layer. The fixing mechanism passes through the surfaces of the lower geomembrane, the anti-seepage layer and the upper geomembrane in sequence. By means of the fixing mechanism, a downward traction force is applied to each independent geotextile component from below. At the same time, it can also avoid the problem of subsidence at the stress points at the bottom layer of the independent geotextile component, and avoid the situation of water accumulation. It can comprehensively collect the water generated on the surface of the independent geotextile component. And the soil blocks accumulated in the conveying pipeline during the drainage process can also be crushed to reduce the probability of complete blockage.

Description

Technical Field

[0001] The present invention relates to the technical field of slope soil protection, and specifically to a directional drainage composite geotextile. Background Art

[0002] A composite geotextile is a waterproof and drainage material composed of a geotextile and a geomembrane. This material has high physical and mechanical property indexes such as tensile strength, tear resistance, and puncture resistance, high strength, good elongation performance, large deformation modulus, acid and alkali resistance, corrosion resistance, aging resistance, and good anti-seepage performance. Therefore, it is used for waterproofing, isolation, and reinforcement in underground projects such as subways and tunnels, and can also be used for the reinforcement and anti-seepage treatment of building foundations to improve the stability and safety of buildings, and also plays an important role in the protection of slope soil.

[0003] The structure of the composite geotextile in the prior art is simple, and large-area laying is required during construction. Therefore, it is necessary to ensure that the bottom of the composite geotextile can be fixed under the soil, which causes the problem of subsidence of the composite geotextile in this area at the force application points for fixation. As a result, when water appears on the surface of the subsequent composite geotextile, it will accumulate in the subsidence area and cannot be completely drained towards the bottom of the slope. On the other hand, due to the large laying area, the composite geotextile cannot achieve the directional function during drainage, and it is difficult to conduct centralized diversion treatment on the drained water. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a directional drainage composite geotextile to solve the problems proposed in the above background art. The present invention applies a downward traction force to each independent geotextile component through a fixing mechanism at the bottom, and at the same time can also avoid the problem of subsidence at the force application points at the bottom layer of the independent geotextile component, avoiding the situation of water accumulation, and can comprehensively collect and directionally drain the water generated on the surface of the independent geotextile component. Moreover, the soil blocks accumulated in the conveying pipeline during the drainage process can also be crushed to reduce the probability of complete blockage.

[0005] To achieve the above object, the present invention is realized by the following technical solutions: A directional drainage composite geotextile, including a composite geotextile body, the composite geotextile body includes a plurality of independent geotextile components, each independent geotextile component is provided with a fixing mechanism, a drainage component and a diversion mechanism, and the surface of the independent geotextile component is provided with an upper geomembrane, the bottom of the upper geomembrane is filled with a leakage prevention layer, the top of the leakage prevention layer is attached with a lower geomembrane, the fixing mechanism sequentially passes through the surfaces of the lower geomembrane, the leakage prevention layer and the upper geomembrane, the drainage component is installed at one side edge of the independent geotextile component, the diversion mechanism is attached to the middle position of the surface of the independent geotextile component, and the diversion mechanism is internally connected to the drainage component, an extension strip is provided on one side of each independent geotextile component, and the side edge of each independent geotextile component is pressed on the extension strip of another independent geotextile component.

[0006] Further, the fixing mechanism includes a top pressing plate, a bottom fixing plate and a plugging rod, a column is inserted at the bottom of the top pressing plate, the bottom end of the column is pressed on the surface of the bottom fixing plate, and the bottom of the column and the bottom fixing plate are in a separated state, and a plugging rod is inserted at the bottom of the bottom fixing plate.

[0007] Further, an anti-slip layer is attached to the surface of the top pressing plate, the top pressing plate is attached to the surface of the upper geomembrane, and the bottom fixing plate is symmetrically installed on both sides of the diversion mechanism.

[0008] Further, a support rod is inserted at the side edge of the top pressing plate, a plugging piece is integrally formed at the side edge of the plugging rod, a connecting piece is embedded at the top of the plugging piece, and a linkage rod is inserted at the top of the connecting piece.

[0009] Further, adhesive layers are coated on the surfaces of the upper geomembrane and the lower geomembrane, the support rod is fixed to the surface of the upper geomembrane through the adhesive layer, the linkage rod is fixed to the bottom of the lower geomembrane through the adhesive layer, a separation cavity is provided inside the leakage prevention layer, and the separation cavity is provided in the area between the support rod and the linkage rod, and the leakage prevention layer is made of polyurethane waterproof coating.

[0010] Further, the drainage component includes a collection channel and a filter screen, the filter screen is laid on one side of the collection channel, the bottom of the collection channel is attached to the surface of the independent geotextile component, and the collection channel is installed at a lower position when the independent geotextile component is laid.

[0011] Further, a receiving hole and an insertion port are respectively opened at both ends of the collection channel, the insertion port is used for embedding into the inside of the receiving hole, and the collection channels on adjacent two independent geotextile components are interconnected.

[0012] Furthermore, the diversion mechanism includes a conveying pipeline, a bearing plate, and a dredging component. Connecting sleeves and sealing plugs are respectively arranged at both ends of the conveying pipeline. The sealing plug is used to be embedded into the interior of the connecting sleeve. A protective base is attached to the surface of the independent geotextile component, and the conveying pipeline passes through the interior of the protective base.

[0013] Furthermore, rubber pads are attached to both sides of the bearing plate. The bottom of the rubber pad is attached to the surface of the independent geotextile component, and there is a gap between the bearing plate and the protective base. The dredging component includes a pressing rod, an elastic sheet, and an extrusion column.

[0014] Furthermore, a docking hole is formed at the top of the protective base. The top of the pressing rod is welded to the bottom of the bearing plate. The pressing rod passes downward through the interior of the docking hole. An elastic sheet is connected to the bottom end of the pressing rod, and an extrusion column is welded to the bottom of the elastic sheet. The side of the extrusion column is in contact with the inner wall of the conveying pipeline.

[0015] Advantages of the present invention:

[0016] 1. The directional drainage composite geotextile installs and fixes each independent geotextile component through a fixing mechanism, applies a large-range downward traction force to each independent geotextile component below, and can also avoid the problem of subsidence at the stress points at the bottom layer of the independent geotextile component, ensuring that the surface of the independent geotextile component is smoother and avoiding the situation of water accumulation in the sunken area.

[0017] 2. The directional drainage composite geotextile can comprehensively collect the water generated on the surface of the independent geotextile component and conduct directional drainage. When the water generated on each independent geotextile component flows towards the bottom area of the slope, it will be blocked by the drainage component. After filtering the stones, the water, dust, and sand can be diverted and transported to achieve the purpose of directional drainage.

[0018] 3. The soil blocks accumulated in the conveying pipeline during the drainage process of the directional drainage composite geotextile can also be broken. This process can be completed only by stepping on it from the top and cooperating with the downward pressure applied by the conveying component, achieving the purpose of reducing the probability of complete blockage. Description of the drawings

[0019] Figure 1 is a structural diagram of a directional drainage composite geotextile after laying according to the present invention;

[0020] Figure 2 is a structural schematic diagram of the independent geotextile component of the present invention;

[0021] Figure 3 is a structural schematic diagram of a part of the fixing mechanism of the present invention;

[0022] Figure 4 Side cross-sectional view of the fixing mechanism of the present invention;

[0023] Figure 5 Schematic connection diagram of the diversion mechanism part of the present invention;

[0024] Figure 6 Schematic structural diagram of the dredging component part of the present invention;

[0025] Figure 7 Schematic connection diagram of the drainage component part of the present invention;

[0026] In the figure: 1. Independent geotextile component; 2. Fixing mechanism; 3. Drainage component; 4. Diversion mechanism; 5. Top pressing plate; 6. Anti-slip layer; 7. Column; 8. Bottom fixing plate; 9. Insertion rod; 10. Insertion piece; 11. Connecting piece; 12. Linking rod; 13. Support rod; 14. Upper geomembrane; 15. Anti-seepage layer; 16. Lower geomembrane; 17. Adhesive layer; 18. Collection channel; 19. Filter screen; 20. Connecting sleeve; 21. Protective base; 22. Delivery pipe; 23. Rubber pad; 24. Bearing plate; 25. Docking hole; 26. Dredging component; 27. Pressing rod; 28. Elastic piece; 29. Extrusion column; 30. Receiving hole; 31. Insertion port; 32. Gap; 33. Sealing plug; 34. Extension strip; 35. Separation cavity. Specific embodiments

[0027] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0028] Please refer to Figures 1 to 7 , the present invention provides the following technical solutions: A directional drainage composite geotextile, comprising a composite geotextile body, the composite geotextile body includes a plurality of independent geotextile components 1, each independent geotextile component 1 is provided with a fixing mechanism 2, a drainage component 3 and a diversion mechanism 4, and an upper geomembrane 14 is provided on the surface layer of the independent geotextile component 1, an anti-seepage layer 15 is filled at the bottom of the upper geomembrane 14, a lower geomembrane 16 is pasted on the top of the anti-seepage layer 15, the fixing mechanism 2 sequentially passes through the surfaces of the lower geomembrane 16, the anti-seepage layer 15 and the upper geomembrane 14, the drainage component 3 is installed at one side edge of the independent geotextile component 1, the diversion mechanism 4 is pasted at the middle position on the surface of the independent geotextile component 1, and the diversion mechanism 4 is internally connected to the drainage component 3, an extension strip 34 is provided on one side of each independent geotextile component 1, and the side edge of each independent geotextile component 1 is pressed on the extension strip 34 of another independent geotextile component 1. This composite geotextile is used for laying on slopes or soil slopes to carry out waterproof protection treatment on the bottom soil part.

[0029] When the present invention is in use, a plurality of independent geotextile components 1 are directly arranged and laid on the surface of the slope to be protected, and the side edges of each independent geotextile component 1 are overlapped and pressed on the extension strip 34 of the adjacent independent geotextile component 1. At the same time, the adjacent two drainage components 3 are docked, and the diversion mechanisms 4 after being aligned with each other are also docked, then the splicing process of each independent geotextile component 1 can be completed. At the same time, a fixing mechanism 2 is installed at the bottom of each independent geotextile component 1. During laying, the bottom area of the fixing mechanism 2 needs to be pressed and embedded into the soil, and the bottom layer fixing plate 8 is partially pressed on the soil, and the top layer pressing plate 5 is pressed on the upper geotextile membrane 14, then the fixing purpose of the entire independent geotextile component 1 can be achieved. After the subsequent laying is completed, the rainwater generated on the independent geotextile component 1 can be diverted along the slope towards the bottom, and the water collected on each independent geotextile component 1 can be discharged in a directed manner by means of the drainage component 3 and the diversion mechanism 4.

[0030] In this embodiment, the fixing mechanism 2 includes a top layer pressing plate 5, a bottom layer fixing plate 8 and a plugging rod 9. A column 7 is inserted at the bottom of the top layer pressing plate 5, the bottom end of the column 7 is pressed on the surface of the bottom layer fixing plate 8, and the bottom of the column 7 and the bottom layer fixing plate 8 are in a separated state. A plugging rod 9 is inserted at the bottom of the bottom layer fixing plate 8. An anti-slip layer 6 is attached to the surface of the top layer pressing plate 5. The top layer pressing plate 5 is attached to the surface of the upper geotextile membrane 14. The bottom layer fixing plate 8 is installed on both sides of the diversion mechanism 4 in a symmetrical form. A support rod 13 is inserted at the side of the top layer pressing plate 5. A plugging piece 10 is integrally formed at the side of the plugging rod 9. A connecting piece 11 is embedded at the top of the plugging piece 10. A linkage rod 12 is inserted at the top of the connecting piece 11. Adhesive layers 17 are coated on the surfaces of the upper geotextile membrane 14 and the lower geotextile membrane 16. The support rod 13 is fixed on the surface of the upper geotextile membrane 14 through the adhesive layer 17. The linkage rod 12 is fixed at the bottom of the lower geotextile membrane 16 through the adhesive layer 17. A separation cavity 35 is arranged inside the anti-leakage layer 15, and the separation cavity 35 is arranged in the area between the support rod 13 and the linkage rod 12. The anti-leakage layer 15 is made of polyurethane waterproof coating. Each independent geotextile component 1 is installed and fixed through the fixing mechanism 2. A large-range downward traction force is applied to each independent geotextile component 1 below. At the same time, it can also avoid the problem of subsidence at the stress points at the bottom of the independent geotextile component 1, ensure that the surface of the independent geotextile component 1 is flatter, and avoid the situation of water accumulation in the sunken area.

[0031] Specifically, during construction and laying, the bottom plug-in rod 9 and the plug-in sheet 10 are directly embedded under the soil by pressing. At this time, the top linkage rod 12 can be pulled by the plug-in sheet 10, and the linkage rod 12 is bonded and fixed to the bottom of the lower geomembrane 16 through the adhesive layer 17. Therefore, the linkage rod 12 can apply a downward pulling force to the lower geomembrane 16 to ensure that the entire independent geotextile assembly 1 can be fixed downward on the soil, and the bottom fixing plate 8 is attached to the surface of the soil, and the top pressure plate 5 partially presses the side support rod 13 on the upper geomembrane 14 with the help of the adhesive layer 17. Therefore, even if the bottom has been connected by the linkage rod 12 By pulling the lower geomembrane 16 of the linear area toward the bottom, the upper geomembrane 14 can still be partially propped up by the top support rod 13, ensuring that the upper geomembrane 14 on the surface always remains flat. This process will also be supported by the separation cavity 35 between the upper geomembrane 14 and the lower geomembrane 16 to avoid the linkage effect of the sinking of the lower geomembrane 16 on the upper geomembrane 14, thereby ensuring that the upper geomembrane 14 on the subsequent surface will not accumulate water due to depressions. At the same time, the anti-slip layer 6 is used to provide a walking area to reduce the probability of slipping when workers walk on the surface of the independent geotextile assembly 1.

[0032] In this embodiment, the drainage component 3 includes a collecting channel 18 and a filter screen 19. The filter screen 19 is laid on one side of the collecting channel 18. The bottom of the collecting channel 18 is attached to the surface of the independent geotextile component 1, and the collecting channel 18 is installed at a lower position when the independent geotextile component 1 is laid. The two ends of the collecting channel 18 are respectively provided with a receiving hole 30 and a plug interface 31. The plug interface 31 is used to be embedded in the inside of the receiving hole 30. The collecting channels 18 on two adjacent independent geotextile components 1 are interconnected. The water generated on the surface of the independent geotextile component 1 can be fully collected and directed. When the water generated on each independent geotextile component 1 flows toward the bottom area of ​​the slope, it will be blocked by the drainage component 3. After the stones are filtered, the water, dust and sand can be diverted and transported to achieve the purpose of directional drainage.

[0033] Specifically, when the generated rainwater flows downward along the surface of the independent geotextile assembly 1, it will pass through the filter screen 19 into the collecting channel 18, and further flow toward the middle guide mechanism 4 through the collecting channel 18, thereby achieving the purpose of directional discharge of water. The filter screen 19 partially blocks the stones, and can transport the generated dust and sand toward the inside of the collecting channel 18, reducing the probability of the filter screen 19 being partially blocked.

[0034] In this embodiment, the diversion mechanism 4 includes a conveying pipeline 22, a bearing plate 24 and a dredging assembly 26. Connecting sleeves 20 and sealing plugs 33 are respectively arranged at both ends of the conveying pipeline 22. The sealing plugs 33 are used to be embedded into the inside of the connecting sleeves 20. A protective base 21 is attached to the surface of the independent geotextile assembly 1, and the conveying pipeline 22 passes through the inside of the protective base 21. Rubber pads 23 are attached to both sides of the bearing plate 24. The bottom of the rubber pads 23 is attached to the surface of the independent geotextile assembly 1, and a gap 32 is provided between the bearing plate 24 and the protective base 21. The dredging assembly 26 includes a pressing rod 27, an elastic sheet 28 and an extrusion column 29. A docking hole 25 is formed at the top of the protective base 21. The top of the pressing rod 27 is welded to the bottom of the bearing plate 24. The pressing rod 27 passes downward through the inside of the docking hole 25. The bottom end of the pressing rod 27 is connected to an elastic sheet 28. The bottom of the elastic sheet 28 is welded with an extrusion column 29. The side of the extrusion column 29 is in contact with the inner wall of the conveying pipeline 22. During the drainage process, the soil blocks accumulated in the conveying pipeline 22 can also be crushed. This process can be completed only by stepping on from the top and cooperating with the conveying assembly to apply downward pressure, so as to achieve the purpose of reducing the probability of complete blockage.

[0035] Specifically, after the water is conveyed into the diversion mechanism 4 by means of the drainage assembly 3, it will flow along the conveying pipeline 22. The sand and soil carried in the water will directly settle and form lumps at the bottom of the conveying pipeline 22 after drying in the later stage. At this time, the bearing plate 24 can be pressed in the form of stepping on the top. With the downward movement of the bearing plate 24, the movement of the conveying assembly can be controlled. During this process, pressure will be applied to the elastic sheet 28 at the bottom through the pressing rod 27. The elastic sheet 28 moves along the inside of the conveying pipeline 22 through the extrusion column 29 at the bottom. Finally, the lumpy sand and soil generated by the two pressing columns at the bottom on the inner wall bottom end of the conveying pipeline 22 will be crushed. The debris generated after crushing will be exported synchronously when the subsequent independent geotextile assembly 1 diverts and discharges the water, so as to reduce the probability that the entire conveying pipeline 22 is completely blocked by sand and soil.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0037] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A directional drainage composite geotextile, comprising a composite geotextile body, characterized in that: The composite geotextile body comprises a plurality of independent geotextile components (1), each independent geotextile component (1) is provided with a fixing mechanism (2), a drainage component (3) and a diversion mechanism (4), and an upper geomembrane (14) is provided on the surface of the independent geotextile component (1), the bottom of the upper geomembrane (14) is filled with an anti-seepage layer (15), and a lower geomembrane (16) is attached to the top of the anti-seepage layer (15), the fixing mechanism (2) passes through the surface of the lower geomembrane (16), the anti-seepage layer (15) and the upper geomembrane (14) in sequence, and the drainage component (3) is installed on the independent geotextile component (1). The drainage assembly (3) is connected to the drainage assembly (3) at the edge of one side of the geotextile assembly (1); the drainage assembly (4) is attached to the middle position of the surface of the independent geotextile assembly (1); the drainage assembly (4) is connected to the inside of the drainage assembly (3); an extension strip (34) is provided on one side of each independent geotextile assembly (1); and the side edge of each independent geotextile assembly (1) is pressed on the extension strip (34) of another independent geotextile assembly (1); the fixing mechanism (2) comprises a top pressure plate (5), a bottom fixing plate (8) and a plug-in rod (9); a column (7) is inserted at the bottom of the top pressure plate (5); and the bottom end of the column (7) is pressed on the bottom The bottom of the bottom fixing plate (8) is in a separated state, a plug-in rod (9) is inserted at the bottom of the bottom fixing plate (8), a non-slip layer (6) is attached to the surface of the top pressing plate (5), the top pressing plate (5) is attached to the surface of the upper geomembrane (14), the bottom fixing plate (8) is symmetrically mounted on both sides of the guide mechanism (4), a support rod (13) is inserted at the side of the top pressing plate (5), a plug-in sheet (10) is integrally formed at the side of the plug-in rod (9), and a connecting sheet (11) is embedded at the top of the plug-in sheet (10). A linkage rod (12) is inserted at the top of the connecting piece (11); the surfaces of the upper geomembrane (14) and the lower geomembrane (16) are coated with an adhesive layer (17); the support rod (13) is fixed to the surface of the upper geomembrane (14) through the adhesive layer (17); the linkage rod (12) is fixed to the bottom of the lower geomembrane (16) through the adhesive layer (17); a separation cavity (35) is provided on the inner side of the anti-leakage layer (15); and the separation cavity (35) is provided in the area between the support rod (13) and the linkage rod (12); and the anti-leakage layer (15) adopts a polyurethane waterproof coating.

2. A directional drainage composite geotextile according to claim 1, characterized in that: The drainage component (3) comprises a collecting channel (18) and a filter screen (19), wherein the filter screen (19) is laid on one side of the collecting channel (18), the bottom of the collecting channel (18) is attached to the surface of the independent geotextile component (1), and when the independent geotextile component (1) is laid, the collecting channel (18) is installed at a lower position.

3. A directional drainage composite geotextile according to claim 2, characterized in that: The two ends of the collecting channel (18) are respectively provided with a receiving hole (30) and an insertion port (31), and the insertion port (31) is used to be embedded in the receiving hole (30), and the collecting channels (18) on two adjacent independent geotextile components (1) are interconnected.

4. The directional drainage composite geotextile according to claim 2, characterized in that: The flow guide mechanism (4) comprises a conveying pipe (22), a pressure plate (24) and a dredging assembly (26); a connecting sleeve (20) and a sealing plug (33) are respectively provided at both ends of the conveying pipe (22); the sealing plug (33) is used to be embedded in the interior of the connecting sleeve (20); a protective base (21) is mounted on the surface of the independent geotextile assembly (1), and the conveying pipe (22) passes through the interior of the protective base (21).

5. A directional drainage composite geotextile according to claim 4, characterized in that: Rubber pads (23) are attached to both sides of the pressure plate (24), the bottom of the rubber pad (23) is attached to the surface of the independent geotextile assembly (1), and a gap (32) is provided between the pressure plate (24) and the protective base (21). The dredging assembly (26) comprises a pressing rod (27), an elastic sheet (28) and an extrusion column (29).

6. A directional drainage composite geotextile according to claim 5, characterized in that: A docking hole (25) is provided at the top of the protective base (21); the top of the pressing rod (27) is welded to the bottom of the pressure plate (24); the pressing rod (27) passes downward from the inside of the docking hole (25); the bottom end of the pressing rod (27) is connected to an elastic sheet (28); the bottom of the elastic sheet (28) is welded to an extrusion column (29); the side of the extrusion column (29) is in contact with the inner wall of the conveying pipe (22).

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