CN215629701U - Sand prevention dispersion water inlet diversion system - Google Patents
Sand prevention dispersion water inlet diversion system Download PDFInfo
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- CN215629701U CN215629701U CN202120698986.XU CN202120698986U CN215629701U CN 215629701 U CN215629701 U CN 215629701U CN 202120698986 U CN202120698986 U CN 202120698986U CN 215629701 U CN215629701 U CN 215629701U
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Abstract
The utility model discloses a sand-proof dispersed water inlet diversion system, and relates to sand-proof diversion engineering of small river flow in hills and mountainous areas. It comprises a retaining dam and a diversion culvert pipe; the water retaining dam is provided with a plurality of sand blocking ridges of the water retaining dam, and sand flushing grooves of the water retaining dam are arranged between the sand blocking ridges of the adjacent water retaining dam; the sand blocking sills of the water diversion culvert pipes are arranged on the water diversion culvert pipes, and sand flushing grooves of the water diversion culvert pipes are arranged between the sand blocking sills of the adjacent water diversion culvert pipes. According to the utility model, the dispersed water inlet is arranged at the top of the sand blocking ridge of the water diversion culvert pipe according to the movement distribution rule of water flow sediment, the sand is blocked by the convex sand blocking ridge of the water diversion culvert pipe and the steel grating, and the sand is flushed by draining water in the sand flushing groove of the concave water diversion culvert pipe, so that the dispersed water inlet can introduce low-sand-content water flow, and the aim of sand prevention and diversion is achieved.
Description
Technical Field
The utility model relates to sand-proof water diversion engineering of small river flow in hills and mountainous areas, in particular to a sand-proof dispersion water inlet diversion system.
Background
The drop of small river flow in hills and mountainous areas is large, the slope of the river channel is steep, the water flow in flood seasons is turbulent, the water flow in the river channel carries a large amount of silt, and the content of gravel and stones is high. The silt has great harm to hydraulic engineering, often leads to the silting up of upstream river channels and channel water inlets of retaining dams, causes the problems of difficult water diversion, high maintenance cost of hydraulic engineering and the like. Meanwhile, small rivers in hills and mountainous areas have narrow river channels, and suitable space and position arrangement of the sand sluicing gates are not available.
Therefore, it is necessary to develop a sand-preventing water diversion system with a dispersed water inlet, which can properly solve the problem of sand and sand in the water diversion engineering of small rivers in hills and mountainous areas.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the background technology and provide a sand-proof dispersing water inlet diversion system.
In order to achieve the purpose, the technical scheme of the utility model is as follows: sand prevention dispersion water inlet diversion system, its characterized in that: comprises a retaining dam and a water diversion culvert pipe positioned at the upstream side of the retaining dam;
a plurality of sand blocking ridges of the water retaining dam are arranged at intervals on the top of the water retaining dam, and sand flushing grooves of the water retaining dam are arranged between the sand blocking ridges of the adjacent water retaining dam;
a plurality of diversion culvert pipe sand blocking sills are arranged at the tops of the diversion culvert pipes at intervals, and diversion culvert pipe sand flushing grooves are formed between adjacent diversion culvert pipe sand blocking sills;
the water diversion culvert pipe sand blocking ridge is provided with a dispersion water inlet; the dispersing water inlet is communicated with the water diversion culvert pipe.
In the above technical scheme, a steel grating is arranged at the top of the dispersing water inlet.
In the above technical scheme, the dispersing water inlet is in a chimney shape.
In the above technical scheme, the dispersing water inlet is perpendicular to the water diversion culvert pipe.
In the technical scheme, the position of the water retaining dam sand blocking ridge corresponds to the position of the water diversion culvert pipe sand blocking ridge, and the position of the water retaining dam sand flushing groove corresponds to the position of the water diversion culvert pipe sand flushing groove.
In the technical scheme, the height of the upstream side of the diversion culvert pipe sand blocking ridge is greater than that of the downstream side.
Compared with the prior art, the utility model has the following advantages:
1) according to the utility model, the dispersed water inlet is arranged at the top of the sand blocking ridge of the water diversion culvert pipe according to the movement distribution rule of water flow sediment, the sand is blocked by the convex sand blocking ridge of the water diversion culvert pipe and the steel grating, and the sand is flushed by draining water in the sand flushing groove of the concave water diversion culvert pipe, so that the dispersed water inlet can introduce low-sand-content water flow, and the aim of sand prevention and diversion is achieved.
2) The top of the retaining dam of the utility model overflows and passes sand, a sand-flushing gate is not needed to be arranged, and the upstream river channel of the retaining dam is not desilted or is less desilted, thus saving the engineering investment and the engineering operation management cost.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view taken at a-a in fig. 1.
Fig. 3 is a cross-sectional view at B-B in fig. 1.
Fig. 4 is a cross-sectional view at C-C in fig. 1.
Fig. 5 is a cross-sectional view taken at D-D in fig. 1.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the utility model will be apparent and readily appreciated by the description.
With reference to the accompanying drawings: sand prevention dispersion water inlet diversion system, its characterized in that: comprises a retaining dam 1 and a water diversion culvert pipe 2 positioned at the upstream side of the retaining dam 1;
a plurality of water retaining dam sand blocking sills 11 are arranged at intervals on the top of the water retaining dam 1, and a water retaining dam sand flushing groove 12 is arranged between the adjacent water retaining dam sand blocking sills 11;
a plurality of water diversion culvert pipe sand blocking sills 21 are arranged at the top of the water diversion culvert pipe 2 at intervals, and a water diversion culvert pipe sand flushing groove 22 is arranged between the adjacent water diversion culvert pipe sand blocking sills 21;
a dispersing water inlet 23 is formed in the water diversion culvert pipe sand blocking ridge 21; the dispersing water inlet 23 is communicated with the water diversion culvert pipe 2.
The top of the dispersing water inlet 23 is provided with a steel grid 24.
The dispersion inlet 23 is chimney-shaped.
The dispersing water inlet 23 is vertical to the water culvert 2.
The position of the water retaining dam sand blocking sill 11 corresponds to the position of the water diversion culvert pipe sand blocking sill 21, and the position of the water retaining dam sand flushing groove 12 corresponds to the position of the water diversion culvert pipe sand flushing groove 22.
The height of the upstream side of the diversion culvert pipe sand blocking ridge 21 is greater than that of the downstream side.
In actual use, the retaining dam 1: a water retaining dam 1 for intercepting the river is arranged at a proper position of the river, so that water can be conveniently guided by the water level of the river channel. The hydraulic engineering retaining dam 1 for hills and mountainous small rivers is generally designed into a gravity dam or an arch dam with a low water head, the damming material generally adopts concrete, stone-buried concrete or masonry stone, and the dam top overflows and spills floodwaters. The height of the retaining dam 1 is mainly determined according to the water diversion requirement.
In order to facilitate the operation management of the hydraulic engineering, the retaining dam 1 generally does not need to be provided with a gate-controlled sand flushing gate, and the upstream river channel of the retaining dam naturally silts up without dredging, so that the engineering investment and the later operation maintenance management cost of the engineering are reduced.
Retaining dam sediment trapping bank 11: a sand blocking ridge 11 of the retaining dam is arranged at the top of the retaining dam 1, and a concave sand flushing groove 12 of the retaining dam is formed between the sand blocking ridges 11 of the retaining dam; meanwhile, the sand washing groove 12 of the water retaining dam is also an overflow channel at a low water level.
The water retaining dam sand flushing tank 12 is a main channel for silt to pass through the dam, so that the silt deposition height of a river channel at the upstream of the water retaining dam 1 can be reduced, and the amount of silt flowing into the water diversion culvert pipe 2 through the dispersion water inlet 23 is reduced; the number and the size of the retaining dam sand blocking ridge 11 and the retaining dam sand washing groove 12 are determined by calculation and analysis according to the diversion flow, the sediment content, the sediment particle diameter and other factors of the actual engineering.
Water diversion culvert pipe 2: the diversion culvert pipe 2 is arranged at the upstream side of the retaining dam 1, the pipe wall is arranged close to the retaining dam 1, the diversion culvert pipe 2 is generally designed into a box culvert structure, and the section size of the culvert pipe is determined according to diversion flow; the top of the diversion culvert 2 is provided with a dispersion water inlet 23, the tail end of the diversion culvert 2 is connected with a diversion canal, and a check gate can be arranged at the head of the diversion canal to control diversion flow; the diversion culvert pipe bottom plate is generally designed to be along the flow direction gradient so as to reduce the sediment deposition in the culvert pipe.
The sand blocking ridge 21 of the water diversion culvert pipe and the sand flushing groove 22 of the water diversion culvert pipe: the volume weight of silt is greater than the volume weight of water, and the distribution of the sand content in the rivers is inhomogeneous, and rivers bottom silt content is great, and rivers top layer silt content is less, and coarse grain silt such as gravel is most to be located the rivers bottom moreover. According to rivers silt motion and distribution law, set up diversion culvert pipe sediment trapping bank 21 and diversion culvert pipe sand washing groove 22 at 2 tops of diversion culvert pipe to distribute dispersion water inlet 23 and arrange in diversion culvert pipe sediment trapping bank 21 top, bellied diversion culvert pipe sediment trapping bank 21 blocks silt, and the low concave diversion culvert pipe sand washing groove 22 sluices and washes sand, can make dispersion water inlet 23 introduce low sand-containing rivers, plays sand prevention diversion effect.
The dispersed water inlet 23 is arranged at the top of the water diversion culvert pipe 2 and is designed into a vertical water inlet in a chimney shape, the side wall of the dispersed water inlet 23 is higher than the top of the water diversion culvert pipe 2 to form a water diversion culvert pipe sand blocking ridge 21, and a groove between the water diversion culvert pipe sand blocking ridges 21 forms a water diversion culvert pipe sand flushing groove 22.
The side wall at the upstream side of the dispersing water inlet 23 is higher than other side walls so as to increase the height of the water diversion culvert pipe sand blocking ridge 21, enhance the sand blocking and preventing effect and reduce the amount of silt entering the water diversion culvert pipe 2. The height of the diversion culvert pipe sand-blocking ridge 21 is comprehensively determined according to factors such as actual engineering river flood flow, sediment content, sediment particle diameter and the like.
The dispersion water inlet 23: the overflowing section of the dispersing water inlet 23 is generally designed to be rectangular, and the number and the section size of the dispersing water inlet 23 are determined according to the diversion flow, the width of a river channel (the width of a water retaining dam 1), the sand content of river channel water flow, the diameter of silt particles and other factors; under the condition of practical engineering conditions, the quantity of the dispersing water inlets 23 or the cross-sectional area of the single-hole water inlet can be properly increased so as to increase the total area of the water inlets and reduce the water flow speed of the water inlets, thereby reducing the amount of silt entering the water diversion culvert pipe 2.
Steel grid 24: the top of the dispersing water inlet 23 is provided with a steel grating 24 which can prevent coarse-grained sediment from entering the water diversion culvert pipe 2. The grid bars of the steel grid 24 are arranged in the general downstream direction, so that the grid bars are prevented from blocking the silt to flow through the dam along with the water; the grid spacing is determined according to factors such as actual engineering river sediment particle diameter, diversion flow, and the like, and under the condition that engineering conditions permit, the grid should adopt smaller spacing to reduce silt and get into diversion culvert pipe 2, improve the sand prevention effect.
The positions and the related structural dimensions of the water retaining dam sand blocking ridge 11 and the water diversion culvert pipe sand blocking ridge 21 are basically consistent.
The positions and related structural dimensions of the water retaining dam sand washing groove 12 and the water diversion culvert pipe sand washing groove 22 are basically consistent.
Other parts not described belong to the prior art.
Claims (5)
1. Sand prevention dispersion water inlet diversion system, its characterized in that: comprises a retaining dam (1) and a water diversion culvert pipe (2) positioned at the upstream side of the retaining dam (1);
a plurality of water retaining dam sand blocking sills (11) are arranged at the top of the water retaining dam (1) at intervals, and a water retaining dam sand flushing groove (12) is arranged between the adjacent water retaining dam sand blocking sills (11);
a plurality of water diversion culvert pipe sand blocking sills (21) are arranged at the top of each water diversion culvert pipe (2) at intervals, and water diversion culvert pipe sand flushing grooves (22) are arranged between the adjacent water diversion culvert pipe sand blocking sills (21);
a dispersing water inlet (23) is arranged on the water diversion culvert pipe sand blocking ridge (21); the dispersion water inlet (23) is communicated with the water diversion culvert pipe (2).
2. The sand control dispersed water inlet diversion system of claim 1 further comprising: and a steel grating (24) is arranged at the top of the dispersing water inlet (23).
3. The sand control dispersed water inlet diversion system of claim 1 further comprising: the dispersion water inlet (23) is vertical to the water diversion culvert pipe (2).
4. The sand control dispersed water inlet diversion system of claim 3 further comprising: the position of the water retaining dam sand blocking sill (11) corresponds to the position of the water diversion culvert pipe sand blocking sill (21), and the position of the water retaining dam sand flushing groove (12) corresponds to the position of the water diversion culvert pipe sand flushing groove (22).
5. The sand control dispersed water inlet diversion system of claim 4 further comprising: the height of the upstream side of the diversion culvert pipe sand blocking ridge (21) is greater than that of the downstream side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120698986.XU CN215629701U (en) | 2021-04-06 | 2021-04-06 | Sand prevention dispersion water inlet diversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120698986.XU CN215629701U (en) | 2021-04-06 | 2021-04-06 | Sand prevention dispersion water inlet diversion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215629701U true CN215629701U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120698986.XU Active CN215629701U (en) | 2021-04-06 | 2021-04-06 | Sand prevention dispersion water inlet diversion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215629701U (en) |
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2021
- 2021-04-06 CN CN202120698986.XU patent/CN215629701U/en active Active
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