Slope protection device for water conservancy project

Abstract

This utility model discloses a slope protection device for water conservancy projects, including a composite drainage layer. The composite drainage layer is laid on the slope surface and includes a permeable geotextile and a gravel filter layer from bottom to top. A drainage pipe is buried inside the gravel filter layer. A three-dimensional geonet is fixed on the upper surface of the composite drainage layer by an anchor assembly. A biodegradable fiber pot is embedded and fixed in the mesh of the planting net. The biodegradable fiber pot is filled with planting soil containing a water-retaining agent. The three-dimensional geonet of this utility model adopts a flexible structure design, which allows the slope to undergo settlement deformation of ±10cm, effectively avoiding the cracking and failure problem caused by stress concentration in traditional rigid structures. The composite drainage layer is composed of permeable geotextile and gravel filter layer. With the internally buried HDPE drainage pipe and the permeable holes on the surface, it can quickly drain the water accumulated in the slope soil, reduce the adverse effects of rainwater infiltration on slope stability, and reduce the risk of landslides.

Description

Technical Field

[0001] This utility model relates to the technical field of slope protection devices, specifically to slope protection devices for water conservancy projects. Background Technology

[0002] Slopes of water conservancy projects are exposed to the natural environment for a long time. They not only have to withstand multiple loads such as water erosion, rainwater infiltration, and soil self-weight, but also settle and deform due to changes in geological conditions and hydrological fluctuations. If not properly protected, they can easily cause disasters such as landslides and collapses, directly threatening the safety of the project structure and the surrounding ecological environment.

[0003] Traditional slope protection devices for hydraulic engineering projects mostly employ rigid structures, such as concrete grids and masonry retaining walls. While these devices can reinforce slopes for a certain period, they have significant limitations in adaptability: due to their inherent rigidity, they cannot coordinate with the settlement and deformation of the slope soil. When the slope settles due to geological movements, water level changes, or soil consolidation, the rigid structure will develop cracks due to concentrated stress. As deformation accumulates, the cracks gradually expand, eventually leading to the overall failure of the protective structure. Utility Model Content

[0004] (I) Technical Issues

[0005] This utility model aims to provide a slope protection device for water conservancy projects to solve the problem that traditional rigid protection structures are difficult to adapt to slope settlement and deformation and are prone to failure, while taking into account drainage function and ecological restoration needs.

[0006] (II) Technical Content

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a slope protection device for water conservancy projects, comprising a composite drainage layer, which is laid on the slope surface and includes a permeable geotextile and a gravel filter layer from bottom to top. A drainage pipe is buried inside the gravel filter layer. A three-dimensional geonet is fixed on the upper surface of the composite drainage layer by an anchor assembly. The three-dimensional geonet includes a planting net with an upper aperture of 5-10cm and a reinforcing net with an lower aperture of 1-2cm. The planting net and the reinforcing net are fixedly connected by several vertical connecting bars. A biodegradable fiber pot is embedded and fixed in the mesh of the planting net, and the biodegradable fiber pot is filled with planting soil containing a water-retaining agent.

[0008] Furthermore, the drain pipe is made of HDPE material, and its surface is provided with a number of water-permeable holes at intervals.

[0009] Furthermore, the anchor assembly includes an anchor bolt and a locking washer. The anchor bolt penetrates the planting net, the reinforcement net, and the composite drainage layer from top to bottom and is embedded in the bedrock of the slope. The locking washer presses against the surface of the planting net.

[0010] Furthermore, the planting soil in the biodegradable fiber pot is premixed with grass and shrub seeds, and the pot wall has capillary pores.

[0011] (III) Technical Effects

[0012] The advantages of this utility model compared with the prior art are:

[0013] 1. The three-dimensional geonet adopts a flexible structural design, allowing for slope settlement deformation of ±10cm. This effectively avoids the cracking and failure problems caused by stress concentration in traditional rigid structures, significantly improving the long-term stability of the protective device. The composite drainage layer consists of permeable geotextile and a gravel filter layer. Combined with internally embedded HDPE drainage pipes and surface permeable holes, it can quickly drain accumulated water from the slope soil, reducing the adverse effects of rainwater infiltration on slope stability and lowering the risk of landslides.

[0014] 2. Biodegradable fiber pots are placed in the mesh of the planting net, which are filled with planting soil containing water-retaining agent and premixed with grass and shrub seeds. The capillary pores of the pot wall help plant growth and can achieve rapid vegetation coverage on the slope, which not only enhances the soil and water conservation capacity, but also improves the ecological environment of the slope.

[0015] 3. Three-dimensional geonets can be transported in rolls, allowing for fast on-site installation. Combined with the simple fixing method of anchor bolt components, they can significantly shorten the construction cycle and reduce project costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the slope protection device for water conservancy projects according to this utility model. Figure 1 .

[0017] Figure 2 This is a three-dimensional structural diagram of the slope protection device for water conservancy projects according to this utility model. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the main structure of the slope protection device for water conservancy projects according to this utility model.

[0019] Figure 4 This is a schematic diagram of the left-side structure of the slope protection device for water conservancy projects according to this utility model.

[0020] Figure 5 This is a top view schematic diagram of the slope protection device for water conservancy projects according to this utility model.

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the slope protection device for water conservancy projects according to this utility model. Figure 1 .

[0022] Figure 7This is a schematic diagram of the cross-sectional structure of the slope protection device for water conservancy projects according to this utility model. Figure 2 .

[0023] Figure 8 This is a schematic diagram of area A of the water conservancy engineering slope protection device of this utility model.

[0024] Figure 9 This is a schematic diagram of area B of the slope protection device for water conservancy projects according to this utility model.

[0025] As shown in the figure: 1. Three-dimensional geonet; 2. Composite drainage layer; 3. Anchor bolt assembly; 4. Biodegradable fiber basin; 5. Slope body; 101. Planting net; 102. Reinforcing net; 103. Vertical connecting bar; 201. Permeable geotextile; 202. Crushed stone filter layer; 203. Drainage pipe; 204. Permeable hole; 401. Capillary pore. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "installed," "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] Combined with appendix Figure 1 To be continued Figure 9A slope protection device for water conservancy projects includes a composite drainage layer 2, which is laid on the slope surface and includes a permeable geotextile 201 and a gravel filter layer 202 from bottom to top. A drainage pipe 203 is buried inside the gravel filter layer 202. A three-dimensional geonet 1 is fixed on the upper surface of the composite drainage layer 2 by an anchor assembly 3. The three-dimensional geonet 1 includes a planting net 101 with an upper aperture of 5-10cm and a reinforcing net 102 with an lower aperture of 1-2cm. The planting net 101 and the reinforcing net 102 are fixedly connected by several vertical connecting bars 103. A biodegradable fiber pot 4 is embedded and fixed in the mesh of the planting net 101, and the biodegradable fiber pot 4 is filled with planting soil containing a water-retaining agent.

[0030] In this embodiment, as a preferred technical solution, the drainage pipe 203 is made of HDPE material, and its surface is provided with a plurality of water-permeable holes 204 at intervals. The anchor bolt assembly 3 includes an anchor bolt and a locking washer. The anchor bolt penetrates from top to bottom through the planting net 101, the reinforcing net 102 and the composite drainage layer 2 and is embedded in the bedrock of the slope. The locking washer presses the surface of the planting net 101.

[0031] In this embodiment, as a preferred technical solution, the planting soil of the biodegradable fiber pot 4 is premixed with grass and shrub seeds, and the pot wall has capillary pores 401.

[0032] The working principle of this utility model water conservancy engineering slope protection device is as follows: the composite drainage layer 2 can quickly drain the surface and internal water of the slope, reducing the erosion of the slope soil by water; the three-dimensional geonet 1 adapts to the slope settlement and deformation with its flexible structure, and is fixed to the slope by the anchor bolt assembly 3, providing stable support for the slope; the planting soil and grass and shrub seeds in the biodegradable fiber pot 4 form vegetation cover during the growth process, further enhancing the stability and ecological restoration capacity of the slope. The components work together to achieve the unity of protection, drainage and ecological restoration.

[0033] The construction steps of this utility model's slope protection device for water conservancy projects are as follows:

[0034] 1. Laying composite drainage layer 2: First, lay permeable geotextile 201 on the slope surface, ensuring that it completely adheres to the slope; then, lay crushed stone filter layer 202 on top of permeable geotextile 201. During the laying process, HDPE drainage pipe 203 needs to be buried inside the crushed stone filter layer 202, and ensure that the permeable holes 204 on the surface of the drainage pipe 203 are unobstructed. The diameter of the crushed stone is much larger than the diameter of the permeable holes, and the permeable holes are preferably elongated. In this embodiment, they are circular.

[0035] 2. Install the three-dimensional geonet 1: Lay the three-dimensional geonet 1 on the upper surface of the composite drainage layer 2, so that the lower reinforcement mesh 102 is in contact with the gravel filter layer 202; fix the three-dimensional geonet 1 with the anchor bolt assembly 3, the anchor bolt penetrates the planting mesh 101, reinforcement mesh 102 and composite drainage layer 2 from top to bottom and is embedded in the bedrock of the slope, and then use locking washers to press the surface of the planting mesh 101 to ensure that the three-dimensional geonet 1 is firmly attached to the composite drainage layer 2.

[0036] 3. Install biodegradable fiber pots 4: Embed and fix biodegradable fiber pots 4 in the mesh of the planting net 101 on the upper layer of the three-dimensional geonet 1. The biodegradable fiber pots 4 are pre-filled with planting soil containing water-retaining agent, and grass and shrub seeds are pre-mixed in the planting soil. The plant seeds germinate and grow, gradually forming vegetation cover. When the slope experiences ±10cm settlement deformation, the flexible structure of the three-dimensional geonet 1 deforms accordingly, avoiding structural cracking and continuously playing a protective role.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A slope protection device for water conservancy projects, comprising a composite drainage layer (2), wherein the composite drainage layer (2) is laid on the slope surface and comprises, from bottom to top, a permeable geotextile (201) and a gravel filter layer (202), wherein a drainage pipe (203) is embedded inside the gravel filter layer (202), characterized in that: The upper surface of the composite drainage layer (2) is fixed with a three-dimensional geonet (1) by an anchor assembly (3). The three-dimensional geonet (1) includes a planting net (101) with an upper aperture of 5-10cm and a reinforcing net (102) with an lower aperture of 1-2cm. The planting net (101) and the reinforcing net (102) are fixedly connected by several vertical connecting bars (103). The planting net (101) has a biodegradable fiber pot (4) embedded and fixed in the mesh, and the biodegradable fiber pot (4) is filled with planting soil.

2. The slope protection device for water conservancy projects according to claim 1, characterized in that: The drain pipe (203) is made of HDPE material, and its surface is provided with a number of water-permeable holes (204) at intervals.

3. The slope protection device for water conservancy projects according to claim 1, characterized in that: The anchor assembly (3) includes an anchor and a locking washer. The anchor penetrates the planting net (101), the reinforcing net (102) and the composite drainage layer (2) from top to bottom and is embedded in the bedrock of the slope. The locking washer presses against the surface of the planting net (101).

4. The slope protection device for water conservancy projects according to claim 1, characterized in that: The biodegradable fiber basin (4) has capillary pores (401) on its basin wall.

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