CN202466542U - Roller compacted concrete gravity dam step-gradient-type spillway - Google Patents
Roller compacted concrete gravity dam step-gradient-type spillway Download PDFInfo
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- CN202466542U CN202466542U CN2012200261120U CN201220026112U CN202466542U CN 202466542 U CN202466542 U CN 202466542U CN 2012200261120 U CN2012200261120 U CN 2012200261120U CN 201220026112 U CN201220026112 U CN 201220026112U CN 202466542 U CN202466542 U CN 202466542U
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- dam
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- spillway
- flood spillway
- concrete gravity
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Abstract
The utility model discloses a roller compacted concrete gravity dam step-gradient-type spillway, comprising a spillway arranged on a dam, wherein a groove-shaped spillway is provided with a step. The roller compacted concrete gravity dam step-gradient-type spillway disclosed by the utility model has the advantages of simple structure, safety and reliability, is smart in design and also can realize energy dissipation and erosion prevention effects, a construction technology of the roller compacted gravity dam can be simplified, an overflow dam section and a non-overflow dam section of a dam can be subjected to continuous roller compaction in a full-silo manner, a critical effect is achieved for being ahead of a construction period, and project amount is optimized.
Description
Technical field
The utility model relates to a kind of gravity dam flood spillway, particularly a kind of Compacted Concrete Gravity Dam Section step gradual change type flood spillway.
Background technology
At present, medium and small Compacted Concrete Gravity Dam Section engineering flood spillway weir type design routine is a practical weir, and its weir face is level and smooth curve; This structure is simple relatively, but for Compacted Concrete Gravity Dam Section, has following defective: 1, because of the weir surface curve is level and smooth, roughness is little; Frictional head loss is little; Flow to let out groove when terminal flow rate of water flow bigger, often need assist the energy dissipater, increase investment; 2, traditional its weir surface concrete of practical weir is equivalent to the second stage concrete construction, is after the dam concrete step is built completion, assembling reinforcement again, and template need make level and smooth curve, and difficulty of construction is big, and the duration is longer, invests bigger; 3, walk type because of construction lofting error or template, usually cause the weir surface curve uneven, the current irregularity is so prior art is still perfect inadequately.
Summary of the invention
The purpose of the utility model is: provide a kind of simple in structure, safe and reliable, not only played the effect of energy dissipating erosion control; Construction technology, dam overflow monolith and the non-overflow dam that can simplify simultaneously the rolled concrete gravity dam can lead to that the storehouse is rolled continuously, the optimizing project amount, reduced the engineering time and practiced thrift a kind of Compacted Concrete Gravity Dam Section step gradual change type flood spillway of fund, to overcome the deficiency of prior art.
The utility model is to be constructed as follows: a kind of Compacted Concrete Gravity Dam Section step gradual change type flood spillway, comprise the flood spillway that is arranged on the dam, and the flute profile flood spillway is provided with ladder.
Evenly be provided with 10～20 ladders on the flood spillway, the first order step at ladder top is provided with the little ladder in the second level on the flood spillway, and the second level step at ladder top is provided with the little ladder of the third level on the flood spillway.
Every grade of height of ladder is that 3.0m, width are 2.25m.
The little ladder in the second level is 4～7, and every grade of height is that 0.6m, width are 0.45m.
The little ladder of the third level is 3, highly is respectively 0.9m, 0.9m, 1.2m from top to bottom, and width is 0.75m.
Owing to adopted technique scheme, on the medium and small Compacted Concrete Gravity Dam Section engineering flood spillway broad in the overflow forward position, that weir head is lower, discharge per unit width is less ladder is set, current can smooth-goingly be let out down, let out the impact force of bringing under the minimizing current; Compared with prior art; The utility model not only has advantage simple in structure, safe and reliable, and design ingenious, not only played the effect of energy dissipating erosion control; Can simplify simultaneously the construction technology of rolled concrete gravity dam; Dam overflow monolith and non-overflow dam can lead to the storehouse and roll continuously, and the construction period played advantages such as conclusive effect, and optimizing project amount in advance.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Description of reference numerals: 1-flood spillway, 2-ladder, 3-first order step, the little ladder in the 4-second level, 5-second level step, the little ladder of the 6-third level, 7-dam.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
The enforcement of the utility model: a kind of Compacted Concrete Gravity Dam Section step gradual change type flood spillway, shown in Fig. 1～2, comprise the flood spillway 1 that is arranged on the dam, flute profile flood spillway 1 is provided with ladder 2.
Evenly be provided with 10～20 ladders 2 on the flood spillway 1, the first order step 3 at ladder 2 tops is provided with the little ladder 4 in the second level on the flood spillway 1, and the second level step 5 at ladder 2 tops is provided with the little ladder 6 of the third level on the flood spillway 1.
Ladder 2 every grade of height are that 3.0m, width are 2.25m.
The little ladder 4 in the second level is 4～7, and every grade of height is that 0.6m, width are 0.45m.
The little ladder 6 of the third level is 3, highly is respectively 0.9m, 0.9m, 1.2m from top to bottom, and width is 0.75m.
The flood spillway of on dam 7, building 1 is the cell body type, and current are flowed downward in groove.
The overall gradient of overflow monolith is 1:0.75 in the utility model, and flood spillway 1 to be provided with 10～20 every grade of height be that 3.0m, width are the ladder 2 of 2.25m, current can smooth-goingly be let out down, let out the impact force of bringing under the minimizing current; On the first order step at ladder 2 tops 3 and second level step 5, be respectively arranged with little ladder 4 in a second level and the little ladder 6 of the third level; Let out under the current ability of doing like this that can make discharge is smooth-going; Not only played the effect of energy dissipating erosion control, can simplify the construction technology of rolled concrete gravity dam simultaneously, dam overflow monolith and non-overflow dam can lead to the storehouse and roll continuously; Reduced the engineering time and practiced thrift fund, be worthy to be popularized.
Claims (5)
1. a Compacted Concrete Gravity Dam Section step gradual change type flood spillway comprises the flood spillway (1) that is arranged on the dam, and it is characterized in that: flute profile flood spillway (1) is provided with ladder (2).
2. Compacted Concrete Gravity Dam Section step gradual change type flood spillway according to claim 1; It is characterized in that: evenly be provided with 10～20 ladders (2) on the flood spillway (1); The first order step (3) that flood spillway (1) is gone up ladder (2) top is provided with the little ladder in the second level (4), and the second level step (5) that flood spillway (1) is gone up ladder (2) top is provided with the little ladder of the third level (6).
3. Compacted Concrete Gravity Dam Section step gradual change type flood spillway according to claim 1 is characterized in that: every grade of height of ladder (2) is that 3.0m, width are 2.25m.
4. Compacted Concrete Gravity Dam Section step gradual change type flood spillway according to claim 2, it is characterized in that: the little ladder in the second level (4) is 4～7, every grade of height is that 0.6m, width are 0.45m.
5. Compacted Concrete Gravity Dam Section step gradual change type flood spillway according to claim 2, it is characterized in that: the little ladder of the third level (6) is 3, highly is respectively 0.9m, 0.9m, 1.2m from top to bottom, width is 0.75m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200261120U CN202466542U (en) | 2012-01-20 | 2012-01-20 | Roller compacted concrete gravity dam step-gradient-type spillway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200261120U CN202466542U (en) | 2012-01-20 | 2012-01-20 | Roller compacted concrete gravity dam step-gradient-type spillway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202466542U true CN202466542U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200261120U Expired - Lifetime CN202466542U (en) | 2012-01-20 | 2012-01-20 | Roller compacted concrete gravity dam step-gradient-type spillway |
Country Status (1)
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| CN (1) | CN202466542U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953358A (en) * | 2012-11-23 | 2013-03-06 | 中国水电顾问集团贵阳勘测设计研究院 | Method and structure for improving anti-impact structure of overflow surface of gravity dam and improved structure |
| CN106351184A (en) * | 2016-08-29 | 2017-01-25 | 中国电建集团西北勘测设计研究院有限公司 | Narrow-valley gravity dam and method for reducing influence of flood handling breach under-pressure on construction period |
| CN107700439A (en) * | 2017-09-26 | 2018-02-16 | 昆明理工大学 | A kind of overfall dam chosen bank and novel transition step and combined |
| CN109680657A (en) * | 2019-01-15 | 2019-04-26 | 中国水利水电科学研究院 | Spillway and its construction method |
| CN109914568A (en) * | 2019-04-02 | 2019-06-21 | 无锡市政设计研究院有限公司 | A kind of structure that Cut-off ditch is connected with inspection shaft |
-
2012
- 2012-01-20 CN CN2012200261120U patent/CN202466542U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953358A (en) * | 2012-11-23 | 2013-03-06 | 中国水电顾问集团贵阳勘测设计研究院 | Method and structure for improving anti-impact structure of overflow surface of gravity dam and improved structure |
| CN106351184A (en) * | 2016-08-29 | 2017-01-25 | 中国电建集团西北勘测设计研究院有限公司 | Narrow-valley gravity dam and method for reducing influence of flood handling breach under-pressure on construction period |
| CN107700439A (en) * | 2017-09-26 | 2018-02-16 | 昆明理工大学 | A kind of overfall dam chosen bank and novel transition step and combined |
| CN109680657A (en) * | 2019-01-15 | 2019-04-26 | 中国水利水电科学研究院 | Spillway and its construction method |
| CN109680657B (en) * | 2019-01-15 | 2024-03-19 | 中国水利水电科学研究院 | Spillway and construction method thereof |
| CN109914568A (en) * | 2019-04-02 | 2019-06-21 | 无锡市政设计研究院有限公司 | A kind of structure that Cut-off ditch is connected with inspection shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |