An assembly structure, drainage box, and construction method for slope support drainage.

Abstract

This invention provides an assembly structure for slope support drainage, including a drainage box and a water-swellable strip nested outside the drainage box along its height. Under external influence, the water-swellable strip changes from a first state to a second state. In the first state, the cross-sectional dimension of the water-swellable strip is smaller than the cross-sectional dimension of the slope drainage hole; in the second state, the cross-sectional dimension of the water-swellable strip is larger than the cross-sectional dimension of the slope drainage hole. This invention also provides a drainage box for slope support drainage as described above, including a filter layer, a drainage pipe, permeable bricks, and a clay layer. The filter layer is arranged along the length of the drainage box, with one end near the soil connecting to the soil and the other end abutting against the permeable bricks. The filter layer connects to the outside of the slope through the drainage pipe. The clay layer is arranged below the filter layer, separating the filter layer and the permeable bricks. This invention also provides a construction method for the drainage box.

Description

Technical Field

[0001] This invention relates to the field of slope support and drainage technology, and in particular to a drainage box of an assembly structure for slope support drainage. Background Technology

[0002] Drainage holes are commonly found in various slope protection projects to drain water from the slope soil, thereby enhancing slope stability. However, most drainage holes on slopes are prone to blockage during long-term use, especially during heavy rainfall or rainy seasons. Blockage makes subsequent maintenance difficult, preventing the timely removal of accumulated water and creating a safety hazard of slope instability. Therefore, while ensuring construction quality, optimizing the drainage structure to address the problem of easy blockage of slope drainage holes has become a crucial task at present. Summary of the Invention

[0003] The main technical problem to be solved by the present invention is to provide an assembly structure for slope support and drainage, which can avoid the blockage of drainage holes in the slope.

[0004] To address the aforementioned technical problems, this invention provides an assembly structure for slope support and drainage, comprising a drainage box and a water-swellable strip nested outside the drainage box along its height direction; under external influence, the water-swellable strip changes from a first state to a second state. In the first state, the cross-sectional dimension of the water-swellable strip is smaller than the cross-sectional dimension of the slope drainage hole; in the second state, the cross-sectional dimension of the water-swellable strip is larger than the cross-sectional dimension of the slope drainage hole.

[0005] In a preferred embodiment: the water-swellable strip is made of rubber.

[0006] In a preferred embodiment, the cross-section along the height direction of the assembly structure is rectangular, circular, or triangular.

[0007] The main technical problem to be solved by the present invention is to provide a drainage box for slope support drainage as described above, comprising a filter layer, a drainage pipe, permeable bricks and a clay layer; the filter layer is arranged along the length of the drainage box, the end of the filter layer near the soil is used to connect to the soil, and the end of the filter layer away from the soil abuts against the permeable bricks; the filter layer is connected to the outside of the slope through the drainage pipe; the clay layer is arranged below the filter layer and separates the filter layer and the permeable bricks.

[0008] In a preferred embodiment: the end of the drain pipe closer to the filter layer is higher than the end of the drain pipe farther from the filter layer; the drain pipe is made of polyvinyl chloride (PVC) pipe.

[0009] The main technical problem to be solved by the present invention is to provide a construction method for a drainage box of an assembled structure for slope support drainage as described above, comprising the following steps:

[0010] Step 1: Spray water to wet the walls of the drainage holes on the slope;

[0011] Step 2: Install the assembly structure into the drainage holes of the slope;

[0012] Step 3: When the drain box is blocked, break the water-expanding strip, remove the drain box, and then repeat steps 1 and 2.

[0013] In a preferred embodiment: In step two, the end of the drainage box away from the soil protrudes from the slope plane.

[0014] In a preferred embodiment: In step three, the horizontal distance between adjacent drain boxes is 1.5m to 2.5m.

[0015] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0016] 1. This invention provides an assembly structure for slope support drainage, which is a combination structure of water-swellable strips and drainage boxes installed in the drainage holes of the slope. When the drainage box in the drainage hole of the slope is not draining smoothly or is blocked, the water-swellable strip can be destroyed, the drainage box can be removed, and then the water-swellable strip and a new drainage box can be reinstalled and fixed in the drainage hole. The problem of blockage of the slope drainage hole is solved by the replaceable assembly drainage box, and the normal drainage of the slope drainage hole is further guaranteed.

[0017] 2. This invention also provides a prefabricated drainage box for slope protection drainage, which achieves a prefabricated effect by using the drainage box with water-expanding strips. Traditionally, drainage devices are fabricated on-site during construction, a complex, time-consuming, and costly process. The drainage box described herein is prefabricated in batches in a factory, facilitating on-site installation, and mass production reduces manufacturing costs.

[0018] 3. This invention also provides a prefabricated drainage box for slope support drainage, which is manufactured in a factory to ensure quality and effectiveness. Traditional drainage hole construction methods typically involve on-site fabrication. Due to numerous uncontrollable factors on-site, the quality of the filter layer is relatively poor, leading to soil loss through the filter layer during long-term use and causing soil erosion. Compared to traditional drainage hole construction, the drainage box described in this invention allows for strict quality control during factory prefabrication and enables quality sampling inspection before shipment. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the assembly structure installed inside the drainage hole of the slope in the preferred embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the installation position of the assembly structure in the preferred embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the drain box in the preferred embodiment 1 of the present invention;

[0022] Figure 4 This is a front view of the drain box in the preferred embodiment 1 of the present invention;

[0023] Figure 5 This is a rear view of the drain box in the preferred embodiment 1 of the present invention.

[0024] In the diagram: 1. Drainage box; 11. Filter layer; 12. Drainage pipe; 13. Permeable brick; 14. Clay layer;

[0025] 2. Water-swellable strip. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0029] Example 1

[0030] refer to Figures 1-5 This embodiment provides an assembly structure for slope support and drainage, including a drainage box 1 and a water-swellable strip 2 nested outside the drainage box 1 along its height. The drainage box 1 is used to drain water from the slope soil. Affected by external forces, the water-swellable strip 2 changes from a first state to a second state. In the first state, the cross-sectional dimension of the water-swellable strip 2 is smaller than the cross-sectional dimension of the slope drainage hole; in the second state, the cross-sectional dimension of the water-swellable strip 2 is larger than the cross-sectional dimension of the slope drainage hole. It can be understood that the water-swellable strip 2, wrapped and nested outside the drainage box 1, expands and deforms upon contact with water. Before the assembly structure is installed and fixed inside the slope drainage hole, the water-swellable strip 2 has not yet contacted the wetted drainage hole wall, has not yet undergone water-swelling change, and its cross-sectional dimension is smaller than the cross-sectional dimension of the slope drainage hole. This makes installing the assembly structure from the outside to the inside of the drainage hole more convenient and requires less effort. After the inner wall of the slope drainage hole is wetted by water spray, the assembly structure is installed and fixed inside the drainage hole. The water-swellable strip 2 comes into full contact with the water on the inner wall of the drainage hole, causing it to expand upon contact with water. The water-swellable strip 2 presses against the wall of the drainage hole, and its cross-sectional dimension is larger than that of the drainage hole. This ensures the water-swellable strip 2 is tightly pressed against the inner wall of the drainage hole, further securing the drainage box 1 and preventing it from loosening. In this embodiment, the water-swellable strip 2 is made of rubber. It should be noted that in this embodiment, the cross-section of the assembly structure along the height direction is rectangular. However, considering the diversity of drainage hole pipe designs, the cross-section of the assembly structure along the height direction can also be circular or triangular to better adapt to various slope drainage holes. In this embodiment, the assembly structure has the following advantages: it is easy to install during construction and easy to replace or repair; it can be mass-produced and assembled in advance.

[0031] This embodiment also provides a drainage box 1 for slope support drainage as described above, including a filter layer 11, a drainage pipe 12, permeable bricks 13, and a clay layer 14. The filter layer 11 is arranged along the length of the drainage box 1. The end of the filter layer 11 near the soil is used to connect to the soil, and the end of the filter layer 11 away from the soil abuts against the permeable bricks 13. The filter layer 11 is connected to the outside of the slope through the drainage pipe 12. The filter layer 11 can both filter impurities and absorb water from the soil. Some water in the slope soil will be absorbed by the filter layer 11. Due to capillary action, the water will permeate towards the drainage holes. When the filter layer 11 is saturated, the water will seep out along the drainage outlet, thereby achieving the drainage effect. The clay layer 14 is arranged below the filter layer 11 and separates the filter layer 11 from the permeable bricks 13. The clay layer 14 can also be used to fix the filter layer 11. The clay layer 14 separates the filter layer 11 from the permeable bricks 13 below, preventing the permeable bricks 13 from absorbing large amounts of water from the filter layer 11. The drainage pipe 12 overlaps the end of the filter layer 11 furthest from the slope soil. With the cooperation of the clay layer 14, the drainage pipe 12 can promptly discharge water from the filter layer 11 towards the outside of the slope. The permeable bricks 13 can allow some water to permeate outwards from the slope, while also reducing the weight of the drainage box 1. The end of the drainage pipe 12 closest to the filter layer 11 is higher than the end furthest from the filter layer 11, making drainage smoother. The drainage pipe 12 is made of polyvinyl chloride (PVC).

[0032] This embodiment also provides a construction method for a drainage box as described above, including the following steps:

[0033] Step 1: In order to fully allow the water-swellable strip 2 to expand and deform and press against the wall of the drainage hole of the slope, the wall of the drainage hole of the slope should be sprayed with water to wet it before installing and fixing the assembly structure.

[0034] Step 2: Based on the number of drainage holes on the slope and construction requirements, assemble the corresponding number of water-swellable strips 2 and drainage boxes 1 in advance. Install the assembly structure into the drainage holes on the slope. When installing and fixing, the end of the drainage box 1 away from the soil protrudes from the slope plane.

[0035] Step 3: During long-term use of the assembled structure, observe the drainage effect of the drain pipe 12. When the drain box 1 becomes clogged, break the water-swellable strip 2, remove the drain box 1, and repeat steps 1 and 2. The horizontal spacing between adjacent drain boxes 1 on the slope is 1.5m to 2.5m.

[0036] In this embodiment, the assembly structure can be prefabricated in the factory for future use. During slope protection construction, the installation position of the assembly structure is reserved, i.e., the position of the slope drainage hole is reserved. When installing the assembly structure into the slope drainage hole, the water-swellable strips 2 should first be wrapped around all four sides of the drainage box 1. The two sides used for water absorption and drainage do not need to be wrapped with the water-swellable strips 2. Water is sprayed inside the slope drainage hole beforehand to wet the hole wall, and then the assembly structure is inserted and fixed into the drainage hole. When the filter layer 11 has been used for a long time, its water absorption and permeability deteriorates. At this time, the water-swellable strips 2 can be manually destroyed using a blade or other sharp instrument, and the entire drainage box 1 can be removed. After a simple cleaning of the slope drainage hole, water is sprayed into the hole to wet the hole wall, and then the new drainage box 1 is installed and fixed inside the drainage hole. This invention, through its modular structure, effectively solves the problem of poor drainage and easy blockage of slope drainage holes. It also achieves the benefits of convenient construction, simplified construction process, and reduced construction time. Furthermore, it reduces maintenance and operation costs and difficulties during the later use of the drainage box 1.

[0037] The above description is merely a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention by those skilled in the art within the scope of the technology disclosed in the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A drainage box, characterized in that, It includes a filter layer, a drainage pipe, permeable bricks, and a clay layer; the filter layer is arranged along the length of the drainage box, the end of the filter layer near the soil is used to connect to the soil, and the end of the filter layer away from the soil abuts against the permeable bricks; the filter layer is connected to the outside of the slope through the drainage pipe; the clay layer is arranged below the filter layer and separates the filter layer and the permeable bricks; The drainage box is installed in the assembly structure for slope support drainage. The assembly structure also includes a water-swellable strip nested outside the drainage box along the height direction of the drainage box. Under the influence of external forces, the water-swellable strip changes from a first state to a second state. In the first state, the cross-sectional size of the water-swellable strip is smaller than the cross-sectional size of the slope drainage hole. In the second state, the cross-sectional size of the water-swellable strip is larger than the cross-sectional size of the slope drainage hole.

2. The drain box according to claim 1, wherein the water-swellable strip is made of rubber.

3. The drain box according to claim 1, wherein the cross-section along the height direction of the assembly structure is rectangular, circular, or triangular.

4. A drain box according to claim 1, characterized in that, The end of the drain pipe closest to the filter layer is higher than the end of the drain pipe furthest from the filter layer; the drain pipe is made of polyvinyl chloride.

5. A construction method for a drainage box as described in claim 1, characterized in that, The process includes the following steps: Step 1: Spray water to wet the walls of the slope drainage holes; Step 2: Install the assembly structure into the slope drainage holes; Step 3: When the drainage box is blocked, break the water-expanding strip, remove the drainage box, and repeat Step 1 and Step 2.

6. The construction method of a drainage box according to claim 5, characterized in that, In step two, the end of the drainage box away from the soil protrudes from the slope plane.

7. The construction method of a drainage box according to claim 5, characterized in that, In step three, the horizontal distance between adjacent drain boxes is 1.5m to 2.5m.

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