Check dam group ecological protection structure

Abstract

The utility model belongs to the technical field of channel protection, and discloses a check dam group ecological protection structure which comprises a concrete check dam, a main channel, a plurality of branch channels and a plurality of gabion check dams. The concrete check dam is arranged at the downstream tail end of the main channel and used for intercepting silt, and the main channel is formed by gathering the downstream sides of a plurality of branch channels; a plurality of gabion check dams are arranged on each branch channel, are sequentially arranged in the direction from the upstream to the downstream of the branch channel and are used for slowing down silt loss / discharge section by section and reducing the harm of debris flow to the downstream. The check dam group protection structure is combined with a gabion check dam and a concrete check dam, is used for carrying out sediment retaining on channels with more branch channels and more material sources, and has the advantages of being wide in adaptability, long in durability and high in sediment retaining capacity compared with a check dam group of a single type. Meanwhile, the gabion net cage formed by weaving the PE plastic-coated steel wires has the characteristics of high corrosion resistance and high durability of the whole check dam structure.

Description

Technical Field

[0001] The utility model discloses a valley group ecological protection structure, belonging to the technical field of ditch protection. Background Art

[0002] Gufang Project is one of the important engineering measures for channel management in areas of soil erosion. It is mainly used to fix the channel bed and prevent the channel from cutting and expanding, thereby effectively protecting water and soil resources and avoiding or reducing natural disasters. It can also prevent the harm of debris flow to the downstream by intercepting sediment and rocks. It is of great significance to prevent soil erosion, ensure agricultural production and ecological environment safety by intercepting and storing sediment, stabilizing the channel slope and slowing down the water flow.

[0003] There are various types of valleys. According to the different construction materials, they can be divided into stone valleys, earth valleys, concrete valleys, etc. Stone valleys have a solid structure and good durability, and are suitable for areas with abundant stone materials; earth valleys are cheap and easy to obtain, but their durability is relatively poor; concrete valleys combine the advantages of the former two, but their cost is higher. All types of valleys can effectively intercept sediment, slow down the flow of water, prevent the ditch bed from cutting, and thus protect the safety of downstream areas.

[0004] In a ditch with many tributaries and abundant material resources, a single gully often cannot meet the protection needs. Therefore, designing multiple gullies to form a gully group for comprehensive management has become an effective solution. The layout of the gully group needs to take into account factors such as the distribution of material resources, the topography of the ditch, geological conditions, and water flow characteristics, to ensure that the gullies work together to form an overall protection effect.

[0005] Although the Gufang Project has played an important role in the field of soil and water conservation, for ditches with many tributaries and abundant material sources, the durability and sediment retention capacity of a single Gufang group in the Gufang Project still needs to be improved. Utility Model Content

[0006] The utility model overcomes the shortcomings of the prior art and proposes a valley group ecological protection structure, including a concrete valley, a main channel, a plurality of branch channels and a plurality of gabion valleys;

[0007] The concrete valley is arranged at the downstream end of the main channel to intercept sediment, and the main channel is formed by the downstream sides of the multiple branch channels;

[0008] A plurality of gabions are arranged on each of the branch channels, and the plurality of gabions are arranged in sequence from upstream to downstream of the branch channels to slow down the loss of sediment in sections.

[0009] Preferably, each gabion valley includes a slag dam, a mesh slope protection and a mesh bed;

[0010] The slag dam is transversely arranged in the branch channel;

[0011] The mesh box slope protection is arranged on the ditch slopes on both sides of the branch ditch and is located on the downstream side of the slag dam;

[0012] The mesh box bed is arranged at the bottom of the branch channel and connected to the slag dam and the mesh box slope protection.

[0013] Preferably, the slag dam, mesh cage slope protection and mesh cage bed are all constructed by stacking gabions.

[0014] Preferably, the upstream side of the slag dam is a vertical surface, and the downstream side is a stepped slope surface.

[0015] Preferably, an overflow trough is provided on the top of the slag dam.

[0016] Preferably, gravel soil is backfilled between the mesh box slope protection and the branch channel.

[0017] Preferably, the gabion cage is woven from PE-coated steel wire;

[0018] The PE plastic coated steel wire is an alloy galvanized steel wire wrapped with a PE plastic coated material.

[0019] Preferably, the concrete dam includes a dam body and a spillway;

[0020] The dam body is transversely arranged in the main channel, the upstream side of the dam body is a vertical surface, and the slope ratio of the downstream side is less than 1:0.3;

[0021] The spillway is arranged on the top of the Gufang dam body.

[0022] Preferably, the heel and toe of the Gufang dam body are backfilled with sand and gravel.

[0023] Preferably, the concrete valley further comprises a plurality of drainage holes;

[0024] The plurality of drainage holes are arranged on the dam body, connecting the upstream side and the downstream side of the dam body.

[0025] Beneficial effects: The ecological protection structure of the valley group of the utility model, combined with the gabion valley and the concrete valley, is used to intercept sediment and prevent debris flow in the channel with many branch channels and more material sources, and reduce the harm of sediment, block stones and other material sources to the downstream. Compared with the single type of valley group, it has the advantages of wide adaptability, long durability and strong sediment interception capacity. At the same time, the gabion box woven with PE coated steel wire has strong anti-corrosion ability and the overall durability of the valley structure is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the arrangement of the valley workshop group in the embodiment of the utility model;

[0027] Figure 2 It is a top view schematic diagram of the gabion valley in the embodiment of the utility model;

[0028] Figure 3 for Figure 2 Schematic diagram of the middle II section;

[0029] Figure 4 This is a schematic cross-sectional view of a gabion valley in an embodiment of the present utility model;

[0030] Figure 5 It is a schematic diagram of the longitudinal section of the gabion valley in the embodiment of the utility model;

[0031] Figure 6 It is a schematic cross-sectional view of a concrete valley in an embodiment of the utility model;

[0032] Figure 7 It is a schematic diagram of the longitudinal section of the concrete valley in the embodiment of the utility model;

[0033] Figure 8 This is a schematic diagram of the cage structure in the embodiment of the utility model;

[0034] Fig. 9 It is a schematic diagram of the mesh structure of the cage in the embodiment of the utility model.

[0035] In the figure: 1. Slag dam; 2. Mesh box slope protection; 3. Mesh box bed; 4. Overflow chute; 5. Gufang dam body; 6. Spillway; 7. Drainage hole; 8. Gravel; 9. Mesh mat. DETAILED DESCRIPTION

[0036] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems and devices are omitted to avoid unnecessary details that hinder the description of the present invention.

[0037] The following is combined with Figure 1-9 The preferred technical scheme of the utility model is further illustrated with embodiments.

[0038] The arrangement of the valleys of the utility model needs to be combined with the actual ditch topography, and strive to ensure that the engineering volume of each valley is small and the storage capacity is large; the geological conditions of the ditch bottom and the bank slope are good, without holes or broken strata, and without rocks and debris that are difficult to remove; it is convenient to obtain materials, and the upper and lower step valleys are connected as smoothly as possible.

[0039] In this embodiment, Figure 1 As shown, a gabion group protection structure includes a concrete gabion, a main channel, a plurality of branch channels and a plurality of gabion gabions. Figure 1 middle It means Concrete Valley. It means Shilonggufang;

[0040] The concrete valley is set at the downstream end of the main channel to intercept sediment. The main channel is formed by the downstream side of multiple branch channels.

[0041] There are multiple gabions on each branch channel, which are arranged in sequence from upstream to downstream of the branch channel to gradually slow down the loss of sediment or intercept sediment, rocks and other sources in the debris flow.

[0042] Among them, the concrete valley arch has high structural strength and strong stability. It is located in the low-lying terrain at the end of the main channel and has a strong ability to intercept and store sediment. Multiple gabion valley arches are set up on each branch channel upstream of the main channel. The gabion valley arches with higher terrain are combined with the filling of local depressions in the channel, which can effectively increase the interception and storage capacity of a single valley arch and reduce the amount of engineering work.

[0043] Further, such as Figure 2-5 As shown, in this embodiment, each gabion valley includes a slag dam 1, a mesh slope protection 2 and a mesh solid bed 3; the slag dam 1 is arranged horizontally in the branch channel; the mesh slope protection 2 is arranged on the ditch slopes on both sides of the branch channel, and is located on the downstream side of the slag dam 1; the mesh solid bed 3 is arranged at the bottom of the branch channel, and is connected to the slag dam 1 and the mesh slope protection 2.

[0044] Specifically, in practical applications, the original ditch line is determined based on the original ditch of the branch ditch, wherein the original ditch is the natural terrain existing before the project begins; the original ditch line represents the main path of the water flow; excavation is carried out in the ditch to obtain a relatively regular excavation line; and then gabions are set up in the ditch.

[0045] The gabion valley comprises a slag dam 1, a mesh slope protection 2 and a mesh solid bed 3; in actual application, the slag dam 1, the mesh slope protection 2 and the mesh solid bed 3 are all smoothly connected to the channel.

[0046] Furthermore, in practical applications, the slag dam 1, the mesh cage slope protection 2 and the mesh cage bed 3 are all constructed by stacking gabions.

[0047] Furthermore, the upstream side of the slag dam 1 is a vertical surface, and the downstream side is a stepped slope surface.

[0048] In this embodiment, Figure 2 and 5 As shown, the stepped slope on the downstream side of the slag dam 1 gradually decreases along the water flow direction and slopes downward.

[0049] Further, such as Figure 4 As shown, in actual application, an overflow trough 4 is provided on the top of the slag dam 1 to discharge the excess debris flow.

[0050] Furthermore, gravel soil is backfilled between the mesh box slope protection 2 and the branch channel.

[0051] like Figure 4 As shown, a mesh pad 9 is arranged between the mesh box slope protection 2 and the ditch. In this embodiment, the mesh pad 9 is a PE coating mesh pad, and gravel soil is backfilled in the PE coating mesh pad. The mesh pad 9 is used to isolate the mesh box slope protection 2 from the soil in the ditch, slow down the erosion of the soil by water flow, and maintain the overall structure and bearing capacity of the mesh box slope protection 2.

[0052] Furthermore, the mesh of the gabion box is woven from PE-coated steel wire;

[0053] PE coated steel wire is alloy galvanized steel wire wrapped with PE coated material.

[0054] Specifically, in practical applications, the structure of the gabion box is as follows: Figure 8 As shown, it is woven with PE coated steel wire. The PE coated steel wire is made of alloy galvanized steel wire wrapped with PE coated layer. The galvanized steel wire and the coated layer are tightly bonded to isolate the metal from air and water, thereby preventing it from oxidation and rusting. The size of a single PE mesh box can be made according to the scale of Gufangba and the location where the mesh box is used. The method of weaving PE coated mesh box gabions is as follows Fig. 9 As shown, it is a hexahedral type.

[0055] Furthermore, the concrete dam includes a dam body 5 and a spillway 6;

[0056] The dam body 5 is laterally arranged in the main channel, the upstream side of the dam body 5 is a vertical surface, and the slope ratio of the downstream side is less than 1:0.3; the spillway 6 is arranged at the top of the dam body 5.

[0057] Furthermore, the heel and toe of the Gufang dam body 5 are backfilled with gravel 8.

[0058] Furthermore, the concrete valley also includes a plurality of drainage holes 7;

[0059] A plurality of drainage holes 7 are provided on the valley dam body 5 , connecting the upstream side and the downstream side of the valley dam body 5 .

[0060] Specifically, in practical applications, such as Figure 6-7As shown, the upstream side of the concrete valley is a vertical surface, and the slope ratio of the downstream side is 1:0.5. A plurality of drainage holes 7 are arranged in the middle of the concrete valley dam body 5 to discharge excess debris flow and water flow, and a spillway 6 is arranged in the middle of the top to discharge excess debris flow. Sand and gravel 8 are backfilled at the heel and toe of the concrete dam body to consolidate the bed and prevent scouring, thereby enhancing the stability of the dam foundation.

[0061] The utility model of the ecological protection structure of the valley group combines the gabion valley and the concrete valley, and is used to intercept sediment in the channel with more branch channels and more material sources. Compared with the single type of valley group, it has the advantages of wide adaptability, long durability and strong sediment interception capacity. At the same time, the gabion box woven by PE coated steel wire has strong anti-corrosion ability and the overall structure of the valley is durable.

[0062] The above are only several embodiments of the utility model, and do not limit the utility model in any form. Although the utility model is disclosed as above in the preferred embodiments, it is not used to limit the utility model. Any technician familiar with this profession, without departing from the scope of the technical solution of the utility model, makes slight changes or modifications using the technical contents disclosed above, which are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A valley group ecological protection structure, characterized in that: It includes concrete valleys, main channels, multiple branch channels and multiple gabion valleys; The concrete valley is arranged at the downstream end of the main channel to intercept sediment, and the main channel is formed by the downstream sides of the multiple branch channels; A plurality of gabions are arranged on each of the branch channels, and the plurality of gabions are arranged in sequence from upstream to downstream of the branch channels to slow down the loss of sediment in sections.

2. The ecological protection structure of the valley group according to claim 1 is characterized in that: Each gabion valley includes a slag dam, a mesh slope protection and a mesh bed; The slag dam is transversely arranged in the branch channel; The mesh box slope protection is arranged on the ditch slopes on both sides of the branch ditch and is located on the downstream side of the slag dam; The mesh box bed is arranged at the bottom of the branch channel and connected to the slag dam and the mesh box slope protection.

3. The ecological protection structure of the valley group according to claim 2 is characterized in that: The slag dam, mesh box slope protection and mesh box solid bed are all constructed by stacking gabions.

4. The ecological protection structure of the valley group according to claim 2 is characterized in that: The upstream side of the slag dam is a vertical surface, and the downstream side is a stepped slope surface.

5. The ecological protection structure of the valley group according to claim 2 is characterized in that: An overflow trough is arranged on the top of the slag dam.

6. The ecological protection structure of the valley group according to claim 2 is characterized in that: The space between the mesh box slope protection and the branch channel is backfilled with crushed stone and soil.

7. The ecological protection structure of the valley group according to claim 3 is characterized in that: The gabion cage is woven from PE plastic-coated steel wire; The PE plastic-coated steel wire is an alloy galvanized steel wire wrapped with a PE plastic-coated material.

8. The ecological protection structure of the valley group according to claim 1 is characterized in that: The concrete dam includes a dam body and a spillway; The dam body is transversely arranged in the main channel, the upstream side of the dam body is a vertical surface, and the slope ratio of the downstream side is less than 1:0.3; The spillway is arranged on the top of the Gufang dam body.

9. The ecological protection structure of the valley group according to claim 8 is characterized in that: The heel and toe of the Gufang dam are backfilled with sand and gravel.

10. The ecological protection structure of the valley group according to claim 8 is characterized in that: The concrete valley also includes a plurality of drainage holes; The plurality of drainage holes are arranged on the dam body, connecting the upstream side and the downstream side of the dam body.

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