Flexible bee grid protection structure for preventing expansion of gully bank of erosion gully

Abstract

The utility model relates to a flexible bee grid protection structure for preventing a bank of an erosion ditch from expanding, and belongs to the technical field of bank protection of erosion ditches. Comprising a slope body composed of a slope shoulder, a slope surface and a slope toe, and further comprises a slope surface protection structure and a foot fixing ecological retaining wall structure which are composed of flexible bee grids. The slope protection structure is arranged on a slope, and the foot fixing ecological retaining wall structure is arranged on a slope foot; bee grid indoor filling, plant anchoring measures and surface grass and shrub measures are taken as auxiliary measures; the beneficial effects are that carrying construction is convenient; the soaking and scouring of water flow to the slope toe are reduced, the amount of scoured silt is reduced, and the structure of the slope tends to be stable; the filler can be obtained locally, so that the transportation cost is reduced; and a favorable growth environment is provided for plant measures.

Description

Technical Field

[0001] The utility model relates to a flexible honeycomb grid protection structure for preventing the expansion of an erosion ditch bank, and belongs to the technical field of erosion ditch bank protection. Background Art

[0002] At present, the expansion of the gully banks is often caused by concentrated rainfall in the rainy season. When a large amount of rainwater gathers through the gully in a short period of time, the flow rate, flow velocity and scouring force suddenly increase, which produces a strong lateral shear force on the slope foot and slope body, and carries a large amount of sediment downward, causing the gully to cut down and the slope foot to become unstable, resulting in frequent collapse and landslides on the slope, continuously widening the gully and encroaching on the cultivated land along the coast. Especially during the freeze-thaw period, the surface of the slope becomes weak and easy to slide, which can easily cause the slope to gradually decrease and the gully banks to expand. Utility Model Content

[0003] The purpose of the utility model is to realize a flexible honeycomb grid protection structure for preventing erosion and expansion of ditch banks, and to provide a method of ecological restoration for the current ecological damage caused by slope landslides and collapses after ditch bottom cutting, and the gradual widening of the ditch encroaching on cultivated land along the coast. It can not only maintain the stability of the existing ditch and protect the ditch silt from being washed away, but also stabilize the slope by greening the slope, thereby overcoming the shortcomings of the prior art.

[0004] The technical solution of the utility model is that it includes a slope body composed of a slope shoulder, a slope surface and a slope foot, and also includes a slope surface protection structure and a fixed foot ecological retaining wall structure composed of a flexible honeycomb grid; the slope surface protection structure is arranged on the slope surface, and the fixed foot ecological retaining wall structure is arranged at the slope foot; supplemented by honeycomb grid indoor filling, plant anchoring measures, and surface grass shrub measures;

[0005] The solid-foot ecological retaining wall structure is formed by welding pairs of sheets to form large and small cells. The large cells and small cells are arranged in strips of flexible honeycomb grids. The sheets are formed into wavy patterns by setting arcs of different sizes. The small arcs of two sheets form small cells, and the large arcs of two sheets form large cells. At the intersection of the two layers of large cells, they form a concave structure with a small cell in the middle.

[0006] The slope protection structure includes a fully laid state of the honeycomb grid and a half laid state of the honeycomb grid.

[0007] The slope protection structure also includes a slope drainage structure arranged at the gully of the slope, which is composed of a water retaining ridge and a spillway.

[0008] Concrete block baffles are also set on both sides of the spillway.

[0009] The solid-foot ecological retaining wall structure is formed by vertically stacking flexible honeycomb grids to form layers; or stacking them step by step to form steps; or a combination of the two and staggered placement, with layers set above the steps.

[0010] The flexible honeycomb grid cells of the slope protection structure are anchored with piles every 3 to 5 grids in the horizontal and vertical directions; the small cells of the solid-foot ecological retaining wall structure are anchored with piles in each grid.

[0011] The sheet width of the solid-foot ecological retaining wall structure ranges from 20cm to 100cm, the diameter of the small cell ranges from 5cm to 35cm, and the diameter of the large cell ranges from 40cm to 100cm.

[0012] The beneficial effects of the utility model are:

[0013] [1] Honeycomb grids and ecological retaining walls are lightweight and easy to transport and construct;

[0014] [2] Reduce the water flow from soaking and scouring the slope foot, reduce the amount of sediment washed away, and make the slope structure more stable;

[0015] [3] Fillers can be sourced locally, reducing transportation costs;

[0016] [4] Provide a favorable growth environment for plant growth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the slope protection structure in full paving status.

[0018] Figure 2 This is a schematic diagram of the half-paved state of the slope protection structure.

[0019] Figure 3 This is a schematic diagram of the slope drainage structure.

[0020] Figure 4 This is a schematic diagram of one of the solid-foot ecological retaining wall structures.

[0021] Figure 5 This is a schematic diagram of the second solid-foot ecological retaining wall structure.

[0022] Figure 6 This is the third schematic diagram of the solid-foot ecological retaining wall structure.

[0023] Figure 7 It is a partial schematic diagram of large and small cells. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the following is a detailed description of the present invention in conjunction with the specific implementation methods and with reference to the attached drawings. Figures 1 to 6, the utility model is further described in detail. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model; in addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other. The utility model will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by similar figure numerals. For the sake of clarity, the various parts in the drawings are not drawn to scale.

[0025] The utility model comprises a slope body 100 consisting of a slope shoulder 101, a slope surface 102 and a slope foot 103, and also comprises a slope surface protection structure 200 and a fixed foot ecological retaining wall structure 300 consisting of a flexible honeycomb grid; the slope surface protection structure 200 is laid on the slope surface 102, and the fixed foot ecological retaining wall structure 300 is arranged at the slope foot 103; supplemented by flexible honeycomb grid indoor filling, plant anchoring measures, and surface grass and shrub measures, protection of gully banks from erosion is carried out.

[0026] The solid foot ecological retaining wall structure 300 is formed by welding a pair of sheets to form large and small cells. The large cells 11 and the small cells 12 are arranged at intervals to form a strip-shaped flexible honeycomb grid. The sheets are arranged with arcs of different sizes to form a wave pattern. The small arcs of the two sheets are opposite to form a small cell 12, and the large arcs of the two sheets are opposite to form a large cell 11. At the intersection of the two layers of large cells, a concave structure 111 is formed with each other, and a small cell 12 is formed in the middle. Figure 7 shown.

[0027] The slope protection structure 200 is in a fully paved state using a honeycomb grid; Figure 1 As shown, the honeycomb grid is laid flat on the slope surface of the entire slope, and is fixed at the slope shoulder with an extension of not less than 1 meter. The outermost sheet at the slope foot 103 is connected and fixed to the sheet on the side of the slope of the fixed foot ecological retaining wall structure 300 through the honeycomb grid connector, and ensures that it fits the slope surface 102. The honeycomb grid rooms of the slope protection structure 200 are anchored with positioning piles 400 at intervals of 3 to 5 grids horizontally and vertically, and the honeycomb grid is fixed to the slope surface 102 or the positioning piles 400 by limiters or anti-corrosion nails; the positioning piles are usually anchor drills or anti-corrosion pine wood piles.

[0028] The slope protection structure 200 is in a half-laying state of a honeycomb grid; Figure 2As shown, the flexible honeycomb grid is half-laid at the lower end of the slope, the top edge of the flexible honeycomb grid is fixed above the flood peak water level, and ensures that it fits the slope, the outermost sheet at the slope foot 103 of the flexible honeycomb grid is connected to the sheet on the side of the slope of the fixed foot ecological retaining wall structure through the honeycomb grid connector, the honeycomb grid room of the slope protection structure 200 is anchored to the positioning piles 400 at intervals of 3 to 5 grids horizontally and vertically, and the honeycomb grid is fixed to the slope 102 or the positioning piles 400 by limiters or anti-corrosion nails.

[0029] The flexible honeycomb grid chambers of the slope protection structure 200 and the fixed-foot ecological retaining wall structure 300 are filled with original soil or planting soil or a sprayed mixed filler matrix, and grass and shrub seeds suitable for the local growth environment are sown or seedlings are planted.

[0030] The slope protection structure 200 also includes a slope drainage structure 2 arranged at the slope gully, such as Figure 3 As shown, it is composed of a water retaining ridge 21 and a spillway 22, and concrete block baffles 23 are also arranged on both sides of the spillway 22; thereby, the runoff from the surface source of the slope shoulder 101 is blocked and introduced into the set spillway 22, preventing the runoff from overflowing the slope shoulder 101 and scouring the slope surface 102, causing the loss of unlived grass and shrub seedlings; the spillway 22 is composed of honeycomb grids stacked layer by layer, which converge toward the slope shoulder and are consistent with the original slope ratio. Prefabricated concrete block baffles 23 are inserted at the designed position to prevent continued scouring of the adjacent slopes, and a layer of geotextile is laid at the bottom of the spillway 22.

[0031] The solid foot ecological retaining wall structure 300 is formed by vertically stacking flexible honeycomb grids to form a laminated layer; the solid foot ecological retaining wall structure 300 is dug down to the solid bottom at the slope foot 103, and a layer of geotextile is laid to the flood peak water level, the small cells 12 of the honeycomb grid are anchored with the positioning piles 400, and the large cells 11 are backfilled with original soil and compacted; the flexible honeycomb grids are vertically stacked to form a laminated layer, such as Figure 4 As shown; or stacked step by step to form a ladder, such as Figure 5 As shown; or set up a stack above the steps, such as Figure 6 As shown, they are staggered for easy anchoring. The backfill soil of each layer of large cells should be compacted, willow stakes or taproot plants are planted in the surface large cells, and some grass and shrub seeds are sown, and the backfill soil close to the slope is compacted.

[0032] The flexible honeycomb grid cells of the slope protection structure 200 are anchored with 3 to 5 grids in the horizontal and vertical directions; the small cells of the solid-foot ecological retaining wall structure 300 are anchored with piles in each grid.

[0033] The sheet width of the solid-foot ecological retaining wall structure 300 ranges from 20 cm to 100 cm, the diameter of the small cell ranges from 5 cm to 35 cm, and the diameter of the large cell ranges from 40 cm to 100 cm.

[0034] When in use, dig to the solid bottom under the slope foot 103 near both sides of the slope body 100, the starting end of the fixed foot ecological retaining wall structure 300 is level with the starting end of the slope protection, the small cell 12 at the end is anchored with a positioning pile 400, and the large cell 11 is expanded and filled with original soil and compacted until the small cell 12 at the end is anchored. The two outer sides of the fixed foot ecological retaining wall structure 300 are buried and compacted with original soil, especially the side close to the slope body after compaction to be consistent with the original slope gradient; the fixed foot ecological retaining wall structure 300 can also increase the number of layers upward according to the design height, and the upper layer is smaller than the width of the lower layer to form a step.

[0035] After connecting 3 to 5 groups of flexible honeycomb grids at the slope shoulder 101, start to support and anchor the grid at one end of the trimmed slope 100. The cell connection hole at the lower end of the flexible honeycomb grid is connected to the upper edge of the large cell of the outer sheet of the fixed foot ecological retaining wall structure 300. After the flexible honeycomb grid is opened, the outer periphery is temporarily anchored. After the flexible honeycomb grid is stable, the angle is adjusted and anchored. According to the density of the slope, the flexible honeycomb grid is fixed on the slope 100 by anchor drills, limiters or anti-corrosion pine piles, and anti-corrosion self-tapping screws. The flexible honeycomb grid is anchored at a density of one per square meter, or one is anchored at intervals of 3 to 5 grids in the horizontal and vertical directions; connect the honeycomb grid, support the grid and connect the ecological fixed foot, adjust the angle anchoring, and anchor in the slope until all the ends are anchored. According to the design requirements, the cell is filled with original soil, foreign soil or sprayed mixed growth matrix, and grass shrub seeds suitable for the local growth environment are sown or seedlings are planted. After all the positioning piles 400 are anchored, the side walls of the cells are fixed to the positioning piles 400 with anti-corrosion self-tapping screws. After the solid-foot ecological retaining wall structure 300 is filled and compacted, the exposed areas in the horizontal direction of the trench are buried with original soil to ensure that the ecological retaining wall is 30-50 cm higher than the trench bottom.

[0036] This new type of protection method using the slope protection structure 200 and the fixed foot ecological retaining wall structure 300 to protect the ditch bank from expansion can not only ensure that the water flow is blocked from eroding the slope foot 103, but also reduce the water flow speed to keep the slope 100 stable, prevent the slope 102 from gradually becoming a steep cliff, and prevent the slope 102 from becoming unstable and sinking due to the rising water level at the slope foot 103 during the flood season and soaking the slope 102.

[0037] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A flexible honeycomb grid protection structure for preventing gully erosion and bank expansion, comprising a slope body consisting of a slope shoulder, a slope surface and a slope foot, characterized in that: It also includes a slope protection structure and a solid-foot ecological retaining wall structure composed of a flexible honeycomb grid; the slope protection structure is arranged on the slope, and the solid-foot ecological retaining wall structure is arranged at the foot of the slope; The solid-foot ecological retaining wall structure is formed by welding pairs of sheets to form large and small cells. The large cells and small cells are arranged in strips of flexible honeycomb grids. The sheets are formed into wavy patterns by setting arcs of different sizes. The small arcs of two sheets form small cells, and the large arcs of two sheets form large cells. At the intersection of the two layers of large cells, they form a concave structure with a small cell in the middle.

2. A flexible honeycomb grid protection structure for preventing gully bank expansion from erosion according to claim 1, characterized in that: The slope protection structure includes a fully laid state of the honeycomb grid and a half laid state of the honeycomb grid.

3. A flexible honeycomb grid protection structure for preventing gully bank expansion according to claim 1, characterized in that: The slope protection structure also includes a slope drainage structure arranged at the gully of the slope, which is composed of a water retaining ridge and a spillway.

4. A flexible honeycomb grid protection structure for preventing gully erosion and bank expansion according to claim 3, characterized in that: Concrete block baffles are also set on both sides of the spillway.

5. The flexible honeycomb grid protection structure for preventing gully bank expansion according to claim 1 is characterized by: The solid-foot ecological retaining wall structure is formed by vertically stacking flexible honeycomb grids to form layers; or stacking them step by step to form steps; or a combination of the two and staggered placement, with layers set above the steps.

6. The flexible honeycomb grid protection structure for preventing gully erosion and bank expansion according to claim 1, characterized in that: The flexible honeycomb grid cells of the slope protection structure are anchored with piles every 3 to 5 grids in the horizontal and vertical directions; the small cells of the solid-foot ecological retaining wall structure are anchored with piles in each grid.

7. The flexible honeycomb grid protection structure for preventing gully erosion and bank expansion according to claim 1, characterized in that: The sheet width of the solid-foot ecological retaining wall structure ranges from 20cm to 100cm, the diameter of the small cell ranges from 5cm to 35cm, and the diameter of the large cell ranges from 40cm to 100cm.

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