Steel rail beam grating blocking dam for debris flow prevention and control
By constructing a grating dam structure for concrete side walls, anchor rods and rail beams in the "first-line" terrain ditch, the problems of high difficulty in construction and poor drainage effect of gravity barrier dams are solved, and a stable mudslide prevention and control effect is achieved.
Patent Information
- Application Number
- CN202422287691.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing gravity barrier dam is difficult to construct in the "first-line" terrain ditch, with high cost and poor drainage effect, making it difficult to effectively prevent and control mudslides.
A grille dam structure composed of concrete side walls, anchors and rail beams is anchored in the mountain through anchors. The spacing between rail beams is smaller than the solid particle size of the mudslide flow, so that large particulate matter is intercepted and water flow is discharged.
It has achieved a solid structure, simple and economical mudslide prevention and control effect, and can effectively intercept large particulate matter and discharge small particles and water flow, reducing the difficulty of construction and maintenance.
Smart Images
Figure CN223240637U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of water conservancy and hydropower engineering prevention and control, in particular to a debris flow prevention and control rail beam grid retaining dam. Background Art
[0002] Debris flows are torrents of water that carry large amounts of mud, sand, and rocks in mountain valleys, often accompanied by flash floods. Within a short period of time, large amounts of mud and rocks rush out of the valley and accumulate at its mouth.
[0003] The gully range of the "One Line Sky" terrain is narrow. When encountering heavy rainfall, a special torrent carrying a large amount of solid materials such as sand, gravel and boulders will be generated in the valley. The valley will form a mudslide, which will then silt up the river channel and even destroy towns, factories, mines and villages, causing casualties among people and animals.
[0004] The main reason why debris flows in the "One Line Sky" terrain gully are difficult to prevent and control is that the gully is narrow as a whole, the slopes on both sides are high and steep, and there is no good environment for silt retention and drainage.
[0005] Related technologies involve constructing gravity dams within gullies in "One Line Sky" terrain, leveraging their high overall strength and stability to intercept debris flows from upstream. While this structure can somewhat help trap sediment, it lacks drainage effectiveness and is costly. Furthermore, gravity dams are labor-intensive and expensive, making construction and subsequent maintenance difficult.
[0006] Based on the above situation, the utility model proposes a debris flow prevention rail beam grid retaining dam to effectively solve the above problems. Utility Model Content
[0007] In order to solve the problems existing in the background technology, the utility model provides a debris flow prevention rail beam grid retaining dam.
[0008] The utility model adopts the following technical solutions:
[0009] A debris flow prevention and control rail beam grid retaining dam includes concrete side walls, anchor rods and rail beams. The concrete side walls are arranged on the two sides of the opposite mountain. The concrete side walls are anchored in the mountains on both sides by multiple horizontally arranged anchor rods. Each anchor rod is provided with a horizontally arranged rail beam with both ends fixed in the concrete side walls. The concrete side walls, anchor rods and rail beams constitute a grid dam.
[0010] Furthermore, stone grooves are provided on the side of the mountain, and the stone grooves are filled with concrete to form the concrete side walls.
[0011] Furthermore, dowel bars are provided at the bottom of the concrete side wall cross section.
[0012] Furthermore, the end of the anchor rod is a threaded structure.
[0013] Furthermore, steel pads are welded at both ends of the rail beam.
[0014] Furthermore, the anchor rod is connected to the steel plate through a nut.
[0015] Furthermore, the spacing between the concrete side walls, anchor rods and rail beams forming the grid dam is smaller than the solid particle size of the debris flow to be blocked in the mountain.
[0016] The utility model provides a debris flow prevention and control rail beam grating retaining dam: concrete side walls, anchor rods, and rail beams are used to form a grating dam, which has a safe and reliable structure and simple construction. It has a reliable "blocking + draining" prevention and control effect on debris flows. The rail beams with smaller spacing can effectively intercept large particles in the debris flow, and it is precisely because of the existence of the spacing that the water flow can be discharged smoothly. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the detailed structure of the anchor rod end of the utility model.
[0019] The serial numbers marked in the figure are as follows: 1-stone groove, 2-concrete side wall, 3-rebar, 4-anchor rod, 5-rail beam, 6-steel pad, 7-nut, 8-valley. DETAILED DESCRIPTION
[0020] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.
[0021] refer to Figure 1-2 A rail beam grid retaining dam for preventing and controlling debris flow includes a concrete side wall 2, anchor rods 4 and rail beams 5. The concrete side walls 2 are arranged on both sides of the opposite mountain, that is, the "one-line sky" terrain mountain. The concrete side walls 2 are anchored in the "one-line sky" terrain mountain on both sides through multiple horizontally arranged anchor rods 4. Each anchor rod 4 is provided with a rail beam 5 with both ends fixed in the concrete side wall 2 and arranged horizontally. The concrete side walls 2, anchor rods 4 and rail beams 5 constitute a grid dam.
[0022] A stone buckle groove 1 is provided on the side of the mountain with the "one-line sky" terrain, and the stone buckle groove 1 is filled with concrete to form the concrete side wall 2.
[0023] The bottom of the cross section of the concrete side wall 2 is provided with dowel bars 3 .
[0024] The end of the anchor rod 4 is a threaded structure, which penetrates into the side of the concrete side wall 2 to make it more firm.
[0025] Steel plates 6 are welded at both ends of the rail beam 5 .
[0026] The anchor rod 4 is connected to the steel plate 6 through a nut 7 .
[0027] The spacing between the concrete side walls, anchor rods and rail beams forming the grid dam is smaller than the solid particle size of the debris flow to be blocked in the mountain.
[0028] Specifically, such as Figure 1 As shown, it includes a stone buckle groove 1 with a thickness of 160 cm and a height of 13 m. The bottom of the stone buckle groove 1 is connected to the valley 8. The lower part of the cross section of the stone buckle groove 1 is equipped with dowel bars 2. The dowel bars 2 have a diameter of 22 mm and the ends of the dowel bars 2 are bent. A plurality of anchor rods 4 are arranged on the side of the cross section of the stone buckle groove 1. The anchor rods 4 have a diameter of 22 mm, a length of 2.5 m, a spacing of 1 m, and are evenly arranged horizontally. They penetrate 50 cm into the stone buckle groove 1. The anchor rods 4 are connected to the rail beams 5.
[0029] like Figure 2 As shown, the rail beam 5 is 12.6m long and 13.2cm wide, with steel plates 6 welded at both ends, the weld height is 8mm, and the specifications of the steel plates 6 are 20cm×20cm×2cm (side length×side length×thickness). The anchor rod 4 is anchored to the steel plate 6 through an M22 nut 7. Finally, concrete is poured to close the stone buckle groove 1 to form a concrete side wall 2. The elevation of the bottom rail beam 5 from the bottom of the valley 8 should be slightly larger than the spacing between the rail beams 5.
[0030] The above structure forms a rail beam grid retaining dam. The rail beam grid retaining dam structure of the utility model is stable and reliable, which is sufficient to prevent and control mudslides in the "one-line sky" terrain, and has the effect of "blocking large and discharging small". Large particles of solid matter are effectively intercepted, and small particles and water are smoothly discharged.
[0031] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include other equivalent embodiments without departing from the spirit of the present invention. The scope of the present invention is determined by the appended claims.
Claims
1. A debris flow prevention rail beam grid retaining dam, characterized in that: It includes concrete side walls, anchor rods and rail beams. The concrete side walls are arranged on both sides of the opposite mountain. The concrete side walls are anchored in the mountains on both sides through multiple horizontally arranged anchor rods. Each anchor rod is provided with a horizontally arranged rail beam with both ends fixed in the concrete side walls. The concrete side walls, anchor rods and rail beams constitute a grid dam.
2. The debris flow prevention rail beam grid retaining dam according to claim 1, characterized in that: Stone buckle grooves are provided on the side of the mountain, and the stone buckle grooves are filled with concrete to form the concrete side walls.
3. The debris flow prevention rail beam grid retaining dam according to claim 1, characterized in that: The bottom of the concrete side wall cross section is provided with dowel bars.
4. The debris flow prevention rail beam grid retaining dam according to claim 1, characterized in that: The end of the anchor rod is a threaded structure.
5. The debris flow prevention rail beam grid retaining dam according to claim 1, characterized in that: Steel pads are welded at both ends of the rail beam.
6. The debris flow prevention rail beam grid retaining dam according to claim 5, characterized in that: The anchor rod is connected to the steel plate through a nut.
7. The debris flow prevention rail beam grid retaining dam according to claim 1, characterized in that: The spacing between the concrete side walls, anchor rods and rail beams forming the grid dam is smaller than the solid particle size of the debris flow to be blocked in the mountain.