Simple karst depression sinkhole protection device

Abstract

The utility model discloses a simple karst depression sinkhole protection device, which belongs to the field of sinkhole protection and comprises a sinkhole, a gabion is arranged around the sinkhole, a peripheral permeable wall is arranged at a position 15m-20m away from the gabion, and a hedge is arranged between the gabion and the peripheral permeable wall. According to the karst depression sinkhole, the mode of building the multi-stage circular buffer area is adopted, waste in the depression is prevented from entering the sinkhole along with flood, the protection effect is achieved, and meanwhile the water elimination function of the sinkhole is not affected.

Description

Technical Field

[0001] This utility model relates to the field of sinkhole protection technology, specifically to a simple sinkhole protection device in karst depressions. Background Technology

[0002] In karst peak-cluster depression areas, sinkholes often exist in low-lying areas. From a hydrological perspective, sinkholes can play a role in watershed drainage, and when water flow is smooth, sinkholes can prevent waterlogging.

[0003] However, because the soil layer in low-lying areas is usually thicker and more fertile, making them very suitable for cultivation, agricultural activities are frequent around the sinkholes. Frequent agricultural activities mean the generation of a large amount of waste. When floods occur due to heavy rain, this waste accumulated in the depressions will flow into the sinkholes with the water and block the entrances, causing poor drainage and ultimately leading to severe flooding. Utility Model Content

[0004] To address the technical problem of waste accumulating in depressions and clogging sinkholes in the existing technology, this utility model provides a simple protective device for sinkholes in karst depressions.

[0005] To achieve the above technical solution, this utility model provides a simple protective device for sinkholes in karst depressions, including a sinkhole, a gabion around the sinkhole, an outer permeable wall at a distance of 15m to 20m from the gabion, and a plant hedge between the gabion and the outer permeable wall.

[0006] Furthermore, it also includes drainage ditches connected to sinkholes, with grating covers laid on the drainage ditches and a layer of mesh fixed underneath the grating covers.

[0007] Furthermore, mesh baffles are installed at the drain outlet and inlet of the drainage ditch.

[0008] Furthermore, the drainage ditch is a trapezoidal, rectangular, or circular structure constructed using mortar-grouted mortar or concrete.

[0009] Furthermore, both the gabions and the outer permeable walls are made of wire mesh cages, and the wire mesh cages are filled with sand and gravel to form a trapezoidal structure that is narrow at the top and wide at the bottom.

[0010] Furthermore, the height of the outer permeable wall is higher than that of the gabion.

[0011] Furthermore, the permeability of the gabion is lower than that of the outer permeable wall.

[0012] The beneficial effects of this utility model are as follows: This utility model is designed for sinkholes in karst depressions. It adopts a multi-level circular buffer zone to prevent waste in the depression from entering the sinkhole with floodwater, thus playing a protective role, while not affecting the sinkhole's water drainage function. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 A schematic diagram of the overall structure of a simple karst depression sinkhole protection device provided by the present invention;

[0015] Figure 2 This is a top view of a simple sinkhole protection device in a karst depression.

[0016] The above figures include the following reference numerals:

[0017] 1. Sinkhole; 2. Permeable wall; 3. Plant hedge; 4. Gabion; 5. Drainage ditch. Detailed Implementation

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0021] See also Figures 1 to 2 As shown, this utility model provides a simple protective device for a sinkhole 1 in a karst depression, including a sinkhole 1, a gabion 4 around the sinkhole 1, an outer permeable wall 2 at a distance of 15m to 20m from the gabion 4, and a plant hedge 3 between the gabion 4 and the outer permeable wall 2.

[0022] During heavy rains, floodwaters and surface runoff carrying silt and garbage from villagers' agricultural production will wash into sinkhole 1, blocking it and causing severe flooding as the depression loses its drainage function. The purpose of establishing a buffer zone for sinkhole 1 is to impede and settle silt and large particles in surface runoff to a certain extent, allowing water to enter sinkhole 1 through the buffer zone, while other debris can be blocked by the buffer strip.

[0023] In practical use, the outer permeable wall primarily serves to initially block larger waste materials. Due to its high permeability, it allows water to pass through, mitigating surrounding flooding. The central vegetation hedge 3 mainly reduces water flow velocity and settles suspended particles, creating a wetland-like ecosystem around the drainage hole 1. The gabion 4 at the entrance is the final filtration line. During heavy rains, when the central vegetation hedge 3 is insufficient for effective sedimentation, the gabion 4 further filters the water, preventing waste or mud from entering the drainage hole 1.

[0024] As a preferred option, a drainage ditch 5 is also included, which is connected to the sinkhole 1. A grating cover is laid on the drainage ditch 5, and a layer of mesh is fixed underneath the grating cover. That is to say, the sinkhole 1 is located in the middle of the depression, which is the lowest point in the entire surrounding area. The drainage ditch 5 can directly drain water into the sinkhole 1. When the water flow is small, the water flows directly out through the drainage ditch 5, which is equivalent to providing a fixed drainage outlet for small-scale runoff. When the water flow is large, the drainage ditch 5 can play an auxiliary role in drainage, so as to reduce the drainage pressure of the simple karst depression sinkhole protection device above. The grating cover laid on the drainage ditch 5, and the mesh fixed underneath the grating cover, can prevent sand and gravel from flowing into the drainage ditch 5, so as to prevent blockage in the drainage ditch 5 and / or prevent sand and gravel from flowing into the sinkhole 1 and affecting the drainage function of the sinkhole 1.

[0025] As a preferred option, the drainage outlet and inlet of the drainage ditch 5 are equipped with mesh baffles. That is to say, the mesh baffles installed at the drainage outlet and inlet can prevent mud and sand from flowing into the drainage hole, thereby avoiding the accumulation of waste inside the drainage hole.

[0026] As a preferred option, the drainage ditch 5 is a trapezoidal, rectangular, or circular structure constructed using masonry mortar or concrete.

[0027] As a preferred option, both the gabion 4 and the outer permeable wall 2 are made of wire mesh, and the wire mesh is filled with sand and gravel to form a trapezoidal structure that is narrow at the top and wide at the bottom. Using a trapezoidal structure that is narrow at the top and wide at the bottom makes the gabion 4 and the outer permeable wall 2 more stable and less prone to collapse.

[0028] As a preferred option, the height of the outer permeable wall 2 is higher than that of the gabion 4. The outer permeable wall 2 is used to initially block some larger waste materials, such as tree branches and fertilizer bags. Furthermore, the initial inflow of water is relatively large, and the height of the accumulated water is relatively high. If the height of the outer permeable wall 2 is relatively low, large waste materials may overflow the outer permeable wall 2.

[0029] As a preferred option, the permeability of the gabion 4 is lower than that of the outer permeable wall 2. That is to say, the outer permeable wall 2 is mainly used to block larger waste materials, while the gabion 4 is mainly used to block smaller waste materials or mud from flowing into the sinkhole 1.

[0030] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A simple protective device for sinkholes in karst depressions, characterized in that, It includes a sinkhole (1), a gabion (4) is provided around the sinkhole (1), an outer permeable wall (2) is provided at a distance of 15m to 20m away from the gabion (4), and a plant hedge (3) is provided between the gabion (4) and the outer permeable wall (2).

2. The simple karst depression sinkhole protection device according to claim 1, characterized in that, It also includes a drainage ditch (5), which is connected to the sinkhole (1). A grating cover is laid on the drainage ditch (5), and a layer of mesh is fixed under the grating cover.

3. The simple karst depression sinkhole protection device according to claim 2, characterized in that, The drainage ditch (5) is equipped with mesh baffles at the drain outlet and water inlet.

4. The simple karst depression sinkhole protection device according to claim 3, characterized in that, The drainage ditch (5) is a trapezoidal, rectangular or circular structure constructed using mortar-grouted mortar or concrete.

5. The simple karst depression sinkhole protection device according to claim 1, characterized in that, Both the gabion (4) and the outer permeable wall (2) are wire cages made of iron wire, and are filled with sand and gravel to form a trapezoidal structure that is narrow at the top and wide at the bottom.

6. The simple karst depression sinkhole protection device according to claim 2, characterized in that, The height of the outer permeable wall (2) is higher than that of the gabion (4).

7. The simple karst depression sinkhole protection device according to any one of claims 1 to 6, characterized in that, The permeability of the gabion (4) is less than that of the outer permeable wall (2).

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