CN210086181U - Sediment dam structure is blocked to formula of permeating water - Google Patents
Sediment dam structure is blocked to formula of permeating water Download PDFInfo
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- CN210086181U CN210086181U CN201920282210.2U CN201920282210U CN210086181U CN 210086181 U CN210086181 U CN 210086181U CN 201920282210 U CN201920282210 U CN 201920282210U CN 210086181 U CN210086181 U CN 210086181U
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Abstract
The utility model discloses a water permeable slag blocking dam structure, which comprises a dam body (2), wherein a drainage tooth socket (4) is arranged along the horizontal direction of the dam body (2); the upper end of the dam body (2) is a dam crest elevation (3); the upstream side surface of the dam body (2) comprises a vertical surface and a slope surface connected with the vertical surface; the downstream side surface of the dam body (2) is a slope surface; the upstream side and the downstream side of the dam body (2) are backfilled and compacted by large stones (8). The utility model discloses reduced and blocked the sediment dam and must bear great water load problem, reduction that can to a great extent blocks the section structure size and the arrangement of reinforcement volume of sediment dam to reach reasonable, effectively intercept the bed load and play the purpose of excreteing rivers again, also reduced the harm and later stage cost of overhaul of erodeing in the drainage hole. And simultaneously, the utility model discloses operation safety, simple structure, engineering volume are few under the operating mode of structure when the water level is high, have saved investment cost.
Description
Technical Field
The utility model relates to a sediment dam structure is blocked to formula of permeating water belongs to the hydraulic engineering among the hydraulic and hydroelectric engineering and blocks sediment building field.
Background
In the hydraulic and hydroelectric engineering, upstream rivers of buildings related to the inlet of a diversion tunnel, particularly upstream rivers in mountainous areas, often have a large amount of pushing and suspending substances along with water drift, and if the pushing and suspending substances, particularly the pushing and suspending substances, are not blocked, the pushing and suspending substances can cause certain damage to the hydraulic and hydroelectric engineering at the downstream of the rivers along with the water flow towards the inside and the downstream of the tunnel. For effectual control bed load to reduce the influence to low reaches hydraulic engineering, need build the sediment barrage in the upper reaches of hydraulic and hydroelectric engineering place river course, intercept bed load. The slag blocking dam not only has the purposes of blocking, pushing and suspending substances, but also can ensure that water flow smoothly passes through, so that the stability of the slag blocking dam can be ensured. At present, the slag blocking dam built in China is mostly of a rockfill structure, the rockfill is utilized to block slag, and gaps among the rockfills are utilized to carry out water passing. However, due to the complexity and diversity of water power, terrain, geology and use conditions, the rockfill structure as a slag blocking dam is not necessarily applicable to all projects, so that the reasonable slag blocking form adopted according to local conditions is of great importance to guarantee project safety and facilitate project application and management.
Disclosure of Invention
The utility model aims at providing a sediment dam structure of permeating water formula, set up the sediment structure of permeating water on the sediment dam, through the sediment structure of blocking that permeates water reduce the bed load and enter and destroy bottom plate and side wall problem in the diversion tunnel, alleviate the harm of bottom plate and side wall in the tunnel, also reduce the later stage operation maintenance cost; meanwhile, the single side of the sand blocking ridge does not need to bear water load caused by water storage, the section size of the sand blocking ridge can be reduced to a great extent, and meanwhile, the reinforcing bars are arranged according to the structure, so that the aim of saving engineering investment is fulfilled.
The utility model discloses a realize through following technical scheme:
a water permeable slag blocking dam structure comprises a dam body, wherein a drainage tooth socket is arranged along the horizontal direction of the dam body;
the upper end of the dam body is a weir crest elevation;
the upstream side surface of the dam body comprises a vertical surface and a slope surface connected with the vertical surface;
the downstream side surface of the dam body is a slope surface;
and the upstream side and the downstream side of the dam body are backfilled and compacted by large stones.
The dam body is located 20-50 m away from the front end of the water inlet.
The dam body is formed by integrally pouring concrete.
The distribution interval of the drainage tooth sockets meets the requirement that the water levels on two sides of the dam body rise synchronously, namely the water levels on two sides of the sediment retaining dam rise synchronously, and the sediment retaining bank is prevented from bearing the load formed by the water pressure difference on two sides to influence the overall stability.
The drainage gullet is concave, the gullet width is 0.4-0.8 m, the gullet height is 2.0-6.0 m, and the top width is 1.0-2.0 m. The top width refers to the width of the top of the dam body, namely the height of the dam top.
The slope ratio of the upstream side slope surface to the downstream side slope surface of the dam body ranges from 1:0.65 to 1: 0.8.
Compared with the existing slag blocking dam structure, the concave drainage tooth grooves are formed in the middle of the slag blocking dam, the tooth groove side walls are used for intercepting bed load particles, and smooth overflowing of upstream incoming water is facilitated in the tooth grooves; the groove width of the tooth grooves is smaller than the groove height, so that the interception effect is effectively improved, the overflowing section is also increased, and flood can smoothly pass through the slag blocking dam; the drainage gullet lower part is blocked by the sediment retaining dam at the bed load granule, piles up the in-process at its upper reaches, owing to be corresponding to the regional bed load granule that piles up mostly of dam body middle part at the upper reaches of sediment retaining dam, the drainage gullet lower part does benefit to rivers and excretes, both can effectively intercept bed load and can make rivers smoothly pass through the drill way and excrete.
The utility model relates to a sediment dam structure drainage channel is blocked to formula of permeating water reduces and blocks the sediment dam and must bear great water load problem, and reduction that can to a great extent blocks the section structure size and the arrangement of reinforcement volume of sediment dam to reach the purpose that reasonable, effective interception bed load played the drainage rivers again, also reduce the damage and later stage maintenance cost of erodeing in the drainage hole. And simultaneously, the utility model discloses operation safety, simple structure, engineering volume are few under the operating mode of structure when the water level is high, have saved investment cost.
Drawings
FIG. 1 is a schematic view of the downstream vertical structure of the present invention;
FIG. 2 is a schematic view of the upstream vertical structure of the present invention;
FIG. 3 is a schematic view of the vertical cross-section of FIGS. 1 and 2;
description of reference numerals: 1-concrete; 2-a dam body; 3-dam crest elevation; 4-a drainage gullet; 5-structural sewing; 6-ground line; 7-dam axis; 8-boulder.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of protection claimed is not limited thereto.
As shown in fig. 1-3, the permeable masonry stone slag blocking dam structure comprises a dam body 2 poured by concrete 1, wherein the upstream side surface of the dam body 2 comprises a vertical surface and a slope surface connected with the vertical surface; the downstream side surface of the dam body 2 is a slope. The upper end of the dam body 2 is a dam crest elevation 3, a plurality of concave drainage tooth grooves 4 are distributed at intervals along the horizontal direction on the dam body 2, the bottom of the dam body 2, namely the part below a ground line 6, is backfilled and compacted by large stones 8 at the upstream side and the downstream side of the dam body, the concave drainage tooth grooves 4 are symmetrical about a dam axis 7, and structural seams 5 are arranged at the dam axis 7 of the dam body 2.
The dam body 2 is formed by pouring concrete 1 at the position 20-50 m away from the front end of the water inlet, and the position of the dam body can be adjusted according to the condition of the water inlet.
The dam body 2 needs to be integrally poured, a concave drainage tooth socket 4 structure arranged in the horizontal direction is poured and reserved, the distribution distance of the drainage tooth sockets 4 can meet the requirement that the water levels on the two sides of the dam body 2 of the sediment retaining dam synchronously rise, and the sediment retaining bank is prevented from bearing the load formed by the water pressure difference on the two sides to influence the integral stability.
The width of a concave drainage tooth groove 4 on a dam body 2 of the slag blocking dam is 0.4-0.8 m, the height of the groove is 2.0-6.0 m, the width of the top width can be determined according to whether traffic requirements exist, and the suggested width is 1.0-2.0 m.
The ratio of the upstream slope to the downstream slope of the dam body 2 of the slag blocking dam is determined according to the stable calculation result of the dam body, and the recommended slope ratio is 1: 0.65-1: 0.8.
The drainage gullet 4 and the dam body 2 are integrally poured, and the large stone 8 is used for backfilling and compacting, so that the influence on the integral stability caused by the flow velocity of water in the river and the bed load passing through the drainage gullet is avoided.
The utility model discloses a sediment dam structure is blocked to permeable concrete has actually been implemented, specifically is "river ditch drainage hole import front end of big river of river diversion pillow dam of Sichuan province" first order hydropower station ", includes the dam body 2 built by concrete 1, blocks the upstream slope ratio of sediment dam body 2 and is 1:0.5, and the downstream slope ratio is 1:0.8, and the dam crest of dam body 2 is for arranging the drainage tooth's socket 4 structure of" concave "shape of seting up along the horizontal direction; the groove width of the concave drainage tooth groove 4 is 0.6m, the groove height is 4.0m, and the groove width is smaller than the groove height.
Claims (6)
1. The utility model provides a sediment dam structure is blocked to formula of permeating water which characterized in that: the dam comprises a dam body (2), wherein a drainage gullet (4) is arranged along the horizontal direction of the dam body (2);
the upper end of the dam body (2) is a dam crest elevation (3);
the upstream side surface of the dam body (2) comprises a vertical surface and a slope surface connected with the vertical surface;
the downstream side surface of the dam body (2) is a slope surface;
and the upstream side and the downstream side of the dam body (2) are backfilled and compacted by using boulders (8).
2. A permeable trash dam structure according to claim 1 further comprising: the dam body (2) is located at the position 20-50 m away from the front end of the water inlet.
3. A permeable trash dam structure according to claim 1 further comprising: the dam body (2) is formed by integrally pouring concrete (1).
4. A permeable trash dam structure according to claim 1 further comprising: the distribution distance of the drainage tooth grooves (4) meets the requirement that the water levels on the two sides of the dam body (2) rise synchronously.
5. A permeable barrage structure according to claim 4, wherein: the drainage gullet (4) is concave, the gullet width is 0.4-0.8 m, the gullet height is 2.0-6.0 m, and the top width is 1.0-2.0 m.
6. A permeable trash dam structure according to claim 1 further comprising: the slope ratio of the upstream side slope surface to the downstream side slope surface of the dam body (2) ranges from 1:0.65 to 1: 0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920282210.2U CN210086181U (en) | 2019-03-06 | 2019-03-06 | Sediment dam structure is blocked to formula of permeating water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920282210.2U CN210086181U (en) | 2019-03-06 | 2019-03-06 | Sediment dam structure is blocked to formula of permeating water |
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| CN210086181U true CN210086181U (en) | 2020-02-18 |
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| CN201920282210.2U Active CN210086181U (en) | 2019-03-06 | 2019-03-06 | Sediment dam structure is blocked to formula of permeating water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981922A (en) * | 2020-08-24 | 2020-11-24 | 中国葛洲坝集团第一工程有限公司 | Construction method for converting dangerous rock control blasting material into dam filling grade ingredient |
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2019
- 2019-03-06 CN CN201920282210.2U patent/CN210086181U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981922A (en) * | 2020-08-24 | 2020-11-24 | 中国葛洲坝集团第一工程有限公司 | Construction method for converting dangerous rock control blasting material into dam filling grade ingredient |
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