Retaining wall water discharge hole anti-filtration layer device in plateau seasonal frozen soil area

Abstract

This invention relates to the technical field of soil and water conservation equipment, and discloses a filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions. The device includes a partition plate 1 with several water outlet holes 1 on its surface. A partition plate 2 is located on the side of the partition plate 1, with several water outlet holes 2 on its surface. A partition plate 3 is located on the side of the partition plate 2 away from the partition plate 1, with several water outlet holes 3 evenly spaced on its surface. A partition plate 4 is located on the side of the partition plate 3 away from the partition plate 2. The partition plates 1, 2, 3, and 4 are all fixedly connected by side plates. By using perforated partitions, the installation position does not need to be readjusted before backfilling the retaining wall after on-site assembly. The backfill soil is less prone to deformation and damage during compaction. The filter layer construction combines perforated partitions with filter media in the filter box, effectively filtering soil carried in the water and improving soil protection, thus preventing soil and water loss.

Description

Technical Field

[0001] This invention relates to the technical field of soil and water conservation equipment, specifically to a filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions. Background Technology

[0002] When seasonal freezing occurs in winter, the soil moisture migrates towards the freezing front as it moves downwards, causing ice accumulation. The ice layer and ice lenses are mainly concentrated in the area between 2 / 3 and 1 / 2 of the maximum freezing depth. The increased volume of the frozen soil after freezing can cause deformation and damage to various structures due to frost heave. Simultaneously, when the frozen layer thaws, water flows into contact with the soil, causing soil erosion. At this time, a filter layer installed in the retaining wall prevents soil from being carried away by the infiltrating water, thus preventing soil erosion or slope instability. However, existing retaining wall drainage hole filter layer structures are relatively simple and not well-suited for seasonally frozen areas, easily leading to clogging of the drainage holes, severe water accumulation in the soil behind the wall, and quality problems such as frost heave and retaining wall instability in winter. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions. This device has advantages such as improving soil protection and effectively preventing soil erosion. It solves the problems of existing filter layer structures for drainage holes being relatively simple, not widely applicable in seasonally frozen soil areas, and prone to clogging of drainage holes, resulting in severe water accumulation in the soil behind the wall, causing soil frost heave in winter, and instability of the retaining wall.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned goal of enhancing soil protection and effectively preventing soil erosion, this invention provides the following technical solution: a filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions, comprising a partition plate one, with a plurality of water outlet holes one on the surface of the partition plate one; a partition plate two is disposed on the side of the partition plate one, with a plurality of water outlet holes two on the surface of the partition plate two; a partition plate three is disposed on the side of the partition plate two away from the partition plate one, with a plurality of water outlet holes three evenly spaced on the surface of the partition plate three; the partition plate... A partition four is provided on the side away from partition two. Several water outlet holes are evenly distributed on the surface of partition four. Partition one, partition two, partition three and partition four are all fixedly connected by side plates. A bottom plate is fixedly connected to the lower end of partition one, partition two, partition three and partition four. Partition one, partition two, side plates and bottom plate are connected to form filter box one. Partition two, partition three, side plates and bottom plate are connected to form filter box two. Partition three, partition four, side plates and bottom plate are connected to form filter box three.

[0007] Preferably, the first water outlet is a filter hole with a diameter of 10mm and the equal spacing between the first water outlet is 10mm; the second water outlet is a filter hole with a diameter of 15mm and the equal spacing between the second water outlet is 15mm; the third water outlet is a filter hole with a diameter of 20mm and the equal spacing between the third water outlet is 20mm; the fourth water outlet is a filter hole with a diameter of 30mm and the equal spacing between the fourth water outlet is 30mm; the interior of the first filter box is filled with 5-10mm gravel filter media; the interior of the second filter box is filled with 10-20mm gravel filter media; and the interior of the third filter box is filled with 2-30mm gravel filter media.

[0008] Preferably, a waterproof plastic sheet is fixedly connected to the end of the base plate away from the partition plate. The waterproof plastic sheet is an impermeable plastic sheet and is integral with the base plate.

[0009] Preferably, each of the filter boxes 1, 2, and 3 contains a filtration device. Each filtration device includes a housing, wherein the housing is movably placed inside the filter box 1. The upper surface of the housing has an upper slot. Filter screen 1 is fixedly embedded on both sides of the inner wall of the housing. A movable box is movably connected inside the upper slot. The upper surface of the movable box is open. Filter screen 2 is fixedly embedded on both sides of the inner wall of the movable box, and the movable box is connected to filter screen 1. A drawer plate is movably connected inside the movable box. The drawer plate is U-shaped. A lower plate is fixedly connected to the upper end of the drawer plate. The lower plate is movably connected inside the movable box. A top plate is fixedly connected to the side of the lower plate away from the inside of the movable box. The top plate is fitted against the upper end of the movable box.

[0010] Preferably, the upper surface of the top plate has an outer groove, and a retaining plate is movably connected inside the outer groove. The upper end of the retaining plate has a gripping groove, and the lower end of the retaining plate is fixedly connected to a pull rope. The pull rope movably passes through the bottom wall of the outer groove and extends into the interior of the drawer. The end of the pull rope away from the retaining plate is fixedly connected to a pressure plate. The upper end of the pressure plate is fixedly connected to two springs, and the ends of the two springs away from the pressure plate are fixedly connected to the lower end of the lower plate. The pressure plate is slidably connected inside the drawer.

[0011] Preferably, the upper end of the box is provided with a short groove, and short plates are fixedly connected to both sides of the outer wall of the movable box. The upper end of the short plate is open, and the shape of the short plate matches the shape of the short groove.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, the present invention provides a reverse filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions, which has the following beneficial effects:

[0014] 1. The filter layer device for the drainage holes of the retaining wall in the seasonally frozen soil area of ​​the plateau, by using perforated baffles, does not require readjustment of the laying position after on-site assembly and before backfilling of the retaining wall. It is not easy to deform or damage during the backfilling and compaction process. The filter layer is constructed by combining perforated baffles with filter media in the filter box, which can filter soil carried in the water and improve the protection of the soil, effectively preventing the problem of soil erosion.

[0015] 2. The filter layer device for the drainage holes of the retaining wall in the seasonally frozen soil region of the plateau can be quickly assembled on the construction site by transporting semi-finished products to the construction site, which saves construction time and improves construction efficiency.

[0016] 3. The reverse filter layer device for the drainage holes of the retaining wall in the seasonally frozen soil area of ​​the plateau uses multiple filter boxes. When water flows from the protected soil into the first filter box, most of the coarse soil particles are trapped on the outside of the partition. Some fine soil particles are carried by the water flow into the gravel in the first filter box. The fine soil particles carried by the water flow flow into the second partition through the first outlet. After passing through the gravel in the second filter box, most of the fine soil particles are trapped on the surface of the gravel. At the same time, the remaining fine soil particles in the water flow enter the third filter box. Through the third filter box, these fine soil particles adhere to the surface of the gravel. Moreover, the possibility of fine soil particles being lost decreases as they go further, thus achieving the effect of protecting the soil and preventing soil erosion.

[0017] 4. This reverse filter layer device for the drainage holes of the retaining wall in the seasonally frozen soil region of the plateau uses a box-shaped structure with a movable box and a pull plate. The pull plate is pulled out from inside the movable box, and the crushed stone filter media is placed inside the pull plate, filling it completely. Simultaneously, a spring-driven pressure plate presses the filter media into the pull plate, ensuring it adheres tightly to the inside of the movable box. The movable box is then moved inwards, and the box is inserted into the filter box, completing the rapid installation of the crushed stone filter media. Replacing the crushed stone filter media is as simple as pulling out the movable box and pull plate, achieving convenient and quick replacement. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the exploded structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the filtration device of the present invention;

[0021] Figure 4 For the present invention Figure 3 Exploded view of the filter device.

[0022] In the diagram: 1. Partition 1; 11. Outlet 1; 12. Partition 2; 13. Outlet 2; 14. Partition 3; 15. Outlet 3; 16. Outlet 4; 17. Partition 4; 18. Side plate; 19. Bottom plate; 111. Filter box 1; 112. Filter box 2; 113. Filter box 3; 2. Filtration device; 21. Box body; 22. Top plate; 23. Filter screen 1; 24. Upper slot opening; 25. Movable box; 26. Filter screen 2; 27. Short slot; 28. Short plate; 29. ​​Draw plate; 31. Spring; 32. Lower plate; 33. Pressure plate; 34. Pull rope; 35. Grab slot; 36. Clamping plate; 37. Outer slot opening. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings, wherein the same parts are indicated by the same reference numerals. It should be noted that the terms “front”, “rear”, “left”, “right”, “upper” and “lower”, “bottom surface” and “top surface” used in the following description refer to the directions in the drawings, and the terms “inner” and “outer” refer to the directions toward or away from the geometric center of a specific part, respectively.

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1

[0026] Please see Figure 1-4 This invention provides a technical solution: a filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions, comprising a partition 1, with a plurality of water outlet holes 11 on the surface of the partition 1; a partition 2 12 is provided on the side of the partition 1, with a plurality of water outlet holes 2 13 on the surface of the partition 2 12; a partition 3 14 is provided on the side of the partition 2 12 away from the partition 1, with a plurality of water outlet holes 3 15 evenly spaced on the surface of the partition 3 14; and a partition 4 17 is provided on the side of the partition 3 14 away from the partition 2 12, with a plurality of water outlet holes 3 15 evenly spaced on the surface of the partition 4 17. The four water outlets 16, the partitions 1, 2, 3, and 4 are all fixedly connected by side plates 18. The lower ends of the partitions 1, 2, 3, and 4 are fixedly connected to the bottom plate 19. The partitions 1, 2, 12, side plates 18 and bottom plate 19 are connected to form filter box 111, the partitions 2, 3, 14, side plates 18 and bottom plate 19 are connected to form filter box 212, and the partitions 3, 4, 17, side plates 18 and bottom plate 19 are connected to form filter box 313.

[0027] The first water outlet 11 is a filter hole with a diameter of 10mm, and the equal interval of the first water outlet 11 is set to 10mm. The second water outlet 13 is a filter hole with a diameter of 15mm, and the equal interval of the second water outlet 13 is set to 15mm. The third water outlet 15 is a filter hole with a diameter of 20mm, and the equal interval of the third water outlet 15 is set to 20mm. The fourth water outlet 16 is a filter hole with a diameter of 30mm, and the equal interval of the fourth water outlet 16 is set to 30mm. The interior of the first filter box 111 is filled with 5-10mm gravel filter media. The interior of the second filter box 112 is filled with 10-20mm gravel filter media. The interior of the third filter box 113 is filled with 2-30mm gravel filter media. The bottom plate 19 is fixedly connected to a seepage-proof plastic plate at the end away from the partition 1. The seepage-proof plastic plate is a waterproof plastic plate and is integral with the bottom plate 19.

[0028] Before installing the filter layer device, the partition plates 1, 12, 14, 17, 18, and 19 are prefabricated in the factory. These semi-finished products are then transported to the construction site for installation. On-site assembly simplifies the construction process. Before installation, the backfill below the drainage holes on the back of the retaining wall is compacted to ensure a compaction degree of at least 96%. A permeable geotextile is then laid between the filter layer device and the drainage holes. The filter layer device is then installed, and backfill is symmetrically placed on its three sides to ensure a smooth backfilling process. The filter layer device will not shift. The soil around the filter layer device is compacted manually. During the backfilling process of the retaining wall, the top of the filter layer device is compacted to a minimum thickness of 20cm and a maximum thickness of 30cm to ensure that the compaction process will not damage the filter layer device. The perforated baffles are installed on site and do not need to be readjusted before the backfilling of the retaining wall. The backfill soil is not easily deformed or damaged during the compaction process. The filter layer is constructed by combining perforated baffles with filter media in the filter box, which can filter soil carried in the water and improve the protection of the soil, effectively preventing the problem of soil erosion.

[0029] Example 2, based on Example 1,

[0030] Filter boxes 111, 112, and 113 each contain a filter device 2. Each filter device 2 includes a housing 21, which is movably placed inside filter box 111. The upper surface of housing 21 has an upper slot 24. Filter screens 23 are fixedly embedded on both sides of the inner wall of housing 21. A movable box 25 is movably connected inside the upper slot 24. The upper surface of movable box 25 is open. Filter screens 26 are fixedly embedded on both sides of the inner wall of movable box 25, and movable box 25 is connected to filter screens 23. A drawer plate 29 is movably connected inside movable box 25. The drawer plate 29 is U-shaped. A lower plate 32 is fixedly connected to the upper end of drawer plate 29. The lower plate 32 is movably connected inside movable box 25. A top plate 22 is fixedly connected to the side of lower plate 32 away from the inside of movable box 25. The top plate 22 is fitted against the upper end of movable box 25.

[0031] The upper surface of the top plate 22 is provided with an outer groove 37. A retaining plate 36 is movably connected inside the outer groove 37. A gripping groove 35 is provided at the upper end of the retaining plate 36. A pull rope 34 is fixedly connected to the lower end of the retaining plate 36. The pull rope 34 movably passes through the bottom wall of the outer groove 37 and extends into the interior of the drawer plate 29. A pressure plate 33 is fixedly connected to the end of the pull rope 34 away from the retaining plate 36. Two springs 31 are fixedly connected to the upper end of the pressure plate 33. The ends of the two springs 31 away from the pressure plate 33 are fixedly connected to the lower end of the lower plate 32, and the pressure plate 33 is slidably connected inside the drawer plate 29.

[0032] The upper end of the box 21 is provided with a short groove 27, and both sides of the outer wall of the movable box 25 are fixedly connected with short plates 28. The upper end of the short plate 28 is open, and the shape of the short plate 28 matches that of the short groove 27.

[0033] In use, by setting up the housing 21 in conjunction with the movable housing 25 and the pull plate 29, the pull plate 29 is pulled out from inside the movable housing 25. At this time, the crushed stone filter media is placed into the interior of the pull plate 29, and the interior of the pull plate 29 is filled with crushed stone. At the same time, the spring 31 drives the pressure plate 33 to press the filter media into the pull plate 29. At this time, the filter media can be tightly attached to the interior of the movable housing 25. Simultaneously, the movable housing 25 is moved into the interior of the housing 21, and the housing 21 is inserted into the filter box. This completes the quick installation of the crushed stone filter media. When replacing the crushed stone filter media, simply pull out the movable housing 25 and the pull plate 29 to replace the crushed stone filter media, thereby achieving the effect of convenient and quick replacement of crushed stone filter media.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions, comprising a partition plate (1), characterized in that: The surface of the partition 1 (1) is provided with a plurality of water outlet holes 1 (11). The side of the partition 1 (1) is provided with a partition 2 (12). The surface of the partition 2 (12) is provided with a plurality of water outlet holes 2 (13). The side of the partition 2 (12) away from the partition 1 (1) is provided with a partition 3 (14). The surface of the partition 3 (14) is provided with a plurality of water outlet holes 3 (15). The side of the partition 3 (14) away from the partition 2 (12) is provided with a partition 4 (17). The surface of the partition 4 (17) is provided with a plurality of water outlet holes 4 (16). The partition 1 (1), partition 2 (12), and partition 3 (14) are provided with a plurality of water outlet holes 4 (16). 14) and partition four (17) are fixedly connected by side plates (18). The bottom of partition one (1), partition two (12), partition three (14) and partition four (17) are fixedly connected to a bottom plate (19). Partition one (1), partition two (12), side plate (18) and bottom plate (19) are connected to form filter box one (111). Partition two (12), partition three (14), side plate (18) and bottom plate (19) are connected to form filter box two (112). Partition three (14), partition four (17), side plate (18) and bottom plate (19) are connected to form filter box three (113). The filter boxes 1 (111), 2 (112), and 3 (113) each contain a filter device (2). Each filter device (2) includes a housing (21), which is movably placed inside the filter box 1 (111). The upper surface of the housing (21) has an upper slot (24). Filter screens 1 (23) are fixedly embedded on both sides of the inner wall of the housing (21). A movable box (25) is movably connected inside the upper slot (24). The upper surface of the movable box (25) is open. The inner walls of the movable box (25) are fixedly inlaid with filter screens (26) on both sides, and the movable box (25) is connected to filter screen (23). The movable box (25) is movably connected to a drawer (29). The drawer (29) is U-shaped. The upper end of the drawer (29) is fixedly connected to a lower plate (32). The lower plate (32) is movably connected to the inside of the movable box (25). The side of the lower plate (32) away from the inside of the movable box (25) is fixedly connected to a top plate (22). The top plate (22) is fitted to the upper end of the movable box (25).

2. The device according to claim 1, characterized in that: The first water outlet (11) is a filter hole with a diameter of 10 mm, and the equal interval of the first water outlet (11) is set to 10 mm. The second water outlet (13) is a filter hole with a diameter of 15 mm, and the equal interval of the second water outlet (13) is set to 15 mm. The third water outlet (15) is a filter hole with a diameter of 20 mm, and the equal interval of the third water outlet (15) is set to 20 mm. The fourth water outlet (16) is a filter hole with a diameter of 30 mm, and the equal interval of the fourth water outlet (16) is set to 30 mm.

3. The reverse filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions according to claim 1, characterized in that: The interior of filter box one (111) is filled with 5-10mm gravel filter media, the interior of filter box two (112) is filled with 10-20mm gravel filter media, and the interior of filter box three (113) is filled with 2-30mm gravel filter media.

4. The reverse filter layer device for drainage holes in retaining walls in seasonally frozen soil areas of plateau regions according to claim 1, characterized in that: The bottom plate (19) is fixedly connected to a waterproof plastic board at the end away from the partition (1). The waterproof plastic board is a non-permeable plastic board and is integral with the bottom plate (19).

5. The device according to claim 1, characterized in that: The top plate (22) has an outer slot (37) on its upper surface. A retaining plate (36) is movably connected inside the outer slot (37). A gripping groove (35) is provided at the upper end of the retaining plate (36). A pull rope (34) is fixedly connected to the lower end of the retaining plate (36). The pull rope (34) moves through the bottom wall of the outer slot (37) and extends into the interior of the drawer plate (29). A pressure plate (33) is fixedly connected to the end of the pull rope (34) away from the retaining plate (36). Two springs (31) are fixedly connected to the upper end of the pressure plate (33). The ends of the two springs (31) away from the pressure plate (33) are fixedly connected to the lower end of the lower plate (32). The pressure plate (33) is slidably connected inside the drawer plate (29).

6. The device according to claim 1, characterized in that: The upper end of the box (21) is provided with a short groove (27), and both sides of the outer wall of the movable box (25) are fixedly connected with short plates (28). The upper end of the short plate (28) is open, and the shape of the short plate (28) matches that of the short groove (27).

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