CN201933472U - Dam structure utilizing flaring piers and dam face small flip buckets to jointly discharge flood and dissipate energy - Google Patents
Dam structure utilizing flaring piers and dam face small flip buckets to jointly discharge flood and dissipate energy Download PDFInfo
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- CN201933472U CN201933472U CN2010206870513U CN201020687051U CN201933472U CN 201933472 U CN201933472 U CN 201933472U CN 2010206870513 U CN2010206870513 U CN 2010206870513U CN 201020687051 U CN201020687051 U CN 201020687051U CN 201933472 U CN201933472 U CN 201933472U
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Abstract
The utility model relates to a dam structure utilizing flaring piers and dam face small flip buckets to jointly discharge flood and dissipate energy, which comprises a dam body, a plurality of flaring piers and a plurality of gate piers arranged above the dam body, wherein the dam body comprises an overflow surface with a gradient, a lock chamber is formed between every two adjacent gate piers, two inner side walls of a downstream end of each lock chamber are respectively provided with the flaring pier, the dam face small flip bucket is arranged in the outlet position of each lock chamber on the overflow surface, and the dam body is an overflow dam with a weir body smaller than a WES weir. The utility model has the advantages that not only the compression capacity of the flaring piers to water flows can be improved, but also the dam structure has a large dam flood capacity and protects the overflow surfaces behind the flaring piers. In addition, the work amount can be reduced, and the engineering investment is saved.
Description
[technical field]
The utility model relates to a kind of dam structure, relates in particular to a kind of dam structure that utilizes flaring gate pier and dam facing to choose bank associating flood-discharge energy-dissipating for a short time.
[background technology]
Dam is the water retaining structure of block rivers ditch water flow with heading up or adjusting flow, and it can form reservoir, and heading up, regulated flow, concentrated head are used for flood control, water supply, irrigation, water generating, improve shipping etc.And when dam is applied to water conservancy and hydropower; the huge hydrodynamic(al) that flood discharge produced of dam can usually can cause bad influence to underwater bed and surrounding enviroment thereof; for the current of letting out are down carried out energy dissipating; China studies flaring gate pier flood-discharge energy-dissipating technology voluntarily; China's flaring gate pier-bailing bucket pond energy-dissipating tech scheme that in the Ankang Hydropower station indoor model test, begins one's study; afterwards; studied flaring gate pier again and choose the combined energy dissipation scheme that stream combines in the indoor model test of Pan members of a family reservoir, wherein Fujian Province's key project Shui Dong power station dam is first engineering that adopts flaring gate pier-stepped dam face-bailing bucket pond combined energy dissipater of China.Flaring gate pier combines with traditional flip trajectory bucket can increase the current aeration, improve energy dissipation rate, flaring gate pier combines with traditional underflow or bucket typed stilling, can reduce the excavated volume of downstream energy dissipating water cushion and absorption basin, shorten absorption basin length, save construction investment, but this existing energy-dissipating tech all has a tangible weakness: the existence of flaring gate pier influences the flood discharge capacity of dam, generally speaking, flaring gate pier is big more to the shrinkage ratio of current, effect of energy dissipation is good more, but but big flood discharge capacity requires that little shrinkage ratio is arranged, and this affects the flaring gate pier The Application of Technology all the time to contradiction; On the other hand, still there is the threat of cavitation erosion in the spillwag chute after the flaring gate pier.
[utility model content]
Technical problem to be solved in the utility model is to provide a kind of dam structure that utilizes flaring gate pier and dam facing to choose bank associating flood-discharge energy-dissipating for a short time; not only can improve the compressed capability of flaring gate pier, but also can have the spillwag chute after bigger dam flood discharge capacity and the protection flaring gate pier current.
The utility model solves the problems of the technologies described above by the following technical programs: a kind of dam structure that utilizes flaring gate pier and dam facing to choose bank associating flood-discharge energy-dissipating for a short time, comprise a dam body, a plurality of flaring gate piers and a plurality of gate pier of being located at the dam body top, described dam body contains a spillwag chute with gradient, all form a lock chamber between every adjacent two described gate piers, be respectively equipped with this flaring gate pier on two inside walls of each described lock chamber downstream, be equipped with a dam facing on the position that respectively this lock chamber exports on the described spillwag chute and choose bank for a short time, and described dam body is the overfall dam of a weir body less than the WES weir.
Further, the bottom of described spillwag chute is set to an anti-segmental arc, and a side in contiguous downstream is provided with a horizontal flip bucket in this anti-segmental arc.
Further, each described flaring gate pier is respectively that the cross section is the wedge of right-angled triangle, and whenever a right-angle side of this right-angled triangle is close to the setting of lock chamber inside wall, and the edge in the contiguous downstream of another right-angle side and gate pier is on the same straight line.
A kind of beneficial effect that utilizes flaring gate pier and dam facing to choose the dam structure of bank associating flood-discharge energy-dissipating for a short time of the utility model is: adopt the lock chamber of the inlet of gate pier and flaring gate pier formation greater than outlet; can strengthen the shrinkage ratio of flaring gate pier to current; promptly increased compressed capability to current; improve the effect of energy dissipation of flaring gate pier; and dam body adopts the weir body can solve the problem that the dam flood discharge capacity that causes greater than outlet because of the lock chamber inlet reduces less than the overfall dam on WES weir; in addition; dam facing is chosen the setting of bank for a short time and the current that export out from lock chamber can be chosen from spillwag chute; thereby make the spillwag chute after the flaring gate pier become no pool, and then allow the spillwag chute zone that subjects to cavitation erosion most be protected.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is a main sectional view of the present utility model.
Fig. 2 is a vertical view of the present utility model.
[specific embodiment]
Please in conjunction with Fig. 1 and Fig. 2, a kind of dam structure that utilizes flaring gate pier and dam facing to choose bank associating flood-discharge energy-dissipating for a short time of the utility model, comprise a dam body 1, a plurality of flaring gate piers 2 and a plurality of gate pier 3 of being located at dam body 1 top, dam body 1 contains a spillwag chute 11 with gradient, all form a lock chamber 4 between every adjacent two gate piers 3, be respectively equipped with a flaring gate pier 2 on two inside walls 41 of each lock chamber 4 downstream, because the existence of flaring gate pier 2, make lock chamber 4 outlet 42 less than the inlet 41, respectively be equipped with a dam facing on the position of this lock chamber 4 outlets 42 on the spillwag chute 11 and choose bank 5 for a short time, and described dam body 1 is the overfall dam of a weir body less than the WES weir.In the present embodiment, the bottom of spillwag chute 11 is set to an anti-segmental arc 12, and a side in contiguous downstream is provided with a horizontal flip bucket 6 in this anti-segmental arc 12; Each flaring gate pier 2 is respectively that the cross section is the wedge of right-angled triangle, and a right-angle side 21 of each wedge is close to the inside wall setting of lock chamber 4, and another right-angle side 22 is on the same straight line with the edge 31 in gate pier 3 contiguous downstreams.
Wherein, the lock chamber 4 that forms by a gate pier 3 and two flaring gate piers 2, because of its inlet 41 greater than outlet 42, not only make current the flow velocity of lock chamber 4 outlets 42 greater than the flow velocity of inlet 41, strengthen the compressed capability of 2 pairs of current of flaring gate pier, and can reduce the kinetic energy of current; Dam body 1 adopts the weir body can solve the problem that reduces greater than the outlet 42 dam flood discharge capacities that cause because of lock chamber 4 inlets 41 less than the overfall dam on WES weir, in addition, can reduce engineering quantity, save construction investment; The dam facing that is provided with on the spillwag chute 11 of next-door neighbour's lock chamber 4 outlets 42 is chosen bank 5 for a short time and lock chamber 4 outlets 42 current that come out can be chosen from spillwag chute 11, thereby make the spillwag chute 11 after the flaring gate pier 2 become no pool, and then allow spillwag chute 11 zones that subject to cavitate most be protected; In addition, cross section is the flaring gate pier 2 of right-angled triangle in the present embodiment, one right-angle side 21 is close to the inside wall setting of lock chamber 4, another right-angle side 22 is on the same straight line with the edge 31 in gate pier 3 contiguous downstreams, and such design can avoid the end angle of flaring gate pier 2 to be subjected to the cavitation erosion of current and to make flaring gate pier 2 impaired; The design of anti-segmental arc 12 can smoothly be let out current down.
The course of work of the present utility model: during the dam flood discharge, open the gate (not shown) of each gate pier 3 earlier, current flow into the lock chamber 4 from the inlet 41 of lock chamber 4; Then current flow out from exporting 42, and because of exporting 42 less than than inlet 41, the rate of outflow of current then can make current be compressed by flaring gate pier 2 greater than inflow velocity; The current of Liu Chuing are chosen bank 5 for a short time by dam facing and are chosen from spillwag chute 11 then, make the spillwag chute 11 after the flaring gate pier 2 become no pool, thereby allow the spillwag chute zone that subjects to cavitate most be protected; Then the current of being provoked are directly injected in the anti-segmental arc 12 of spillwag chute 11 bottoms; Choose riverbed downstream by horizontal flip bucket 6 at last.
Claims (3)
1. one kind is utilized flaring gate pier and dam facing to choose the dam structure that bank is united flood-discharge energy-dissipating for a short time, comprise a dam body, a plurality of flaring gate pier and a plurality of gate pier of being located at the dam body top, described dam body contains a spillwag chute with gradient, all form a lock chamber between every adjacent two described gate piers, it is characterized in that: be respectively equipped with this flaring gate pier on two inside walls of each described lock chamber downstream, be equipped with a dam facing on the position that respectively this lock chamber exports on the described spillwag chute and choose bank for a short time, and described dam body is the overfall dam of a weir body less than the WES weir.
2. a kind of according to claim 1 dam structure that utilizes flaring gate pier and dam facing to choose bank associating flood-discharge energy-dissipating for a short time, it is characterized in that: the bottom of described spillwag chute has been set to an anti-segmental arc, and a side in contiguous downstream is provided with a horizontal flip bucket in this anti-segmental arc.
3. a kind of according to claim 1 dam structure that utilizes flaring gate pier and dam facing to choose bank associating flood-discharge energy-dissipating for a short time, it is characterized in that: each described flaring gate pier is respectively that the cross section is the wedge of right-angled triangle, and whenever a right-angle side of this right-angled triangle is close to the setting of lock chamber inside wall, and the edge in the contiguous downstream of another right-angle side and gate pier is on the same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206870513U CN201933472U (en) | 2010-12-29 | 2010-12-29 | Dam structure utilizing flaring piers and dam face small flip buckets to jointly discharge flood and dissipate energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206870513U CN201933472U (en) | 2010-12-29 | 2010-12-29 | Dam structure utilizing flaring piers and dam face small flip buckets to jointly discharge flood and dissipate energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201933472U true CN201933472U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206870513U Expired - Lifetime CN201933472U (en) | 2010-12-29 | 2010-12-29 | Dam structure utilizing flaring piers and dam face small flip buckets to jointly discharge flood and dissipate energy |
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| CN (1) | CN201933472U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704449A (en) * | 2012-06-25 | 2012-10-03 | 中国水电顾问集团中南勘测设计研究院 | Big-discharge efficient energy dissipater structure of narrow river valley arch dam |
| CN102900054A (en) * | 2012-10-25 | 2013-01-30 | 中国水电顾问集团北京勘测设计研究院 | River bank-like flood spillway |
| CN102912771A (en) * | 2012-11-08 | 2013-02-06 | 四川大学 | Stepped surface local sidewall for air entrainment and cavitation alleviation behind X-type flaring gate pier |
| CN104404926A (en) * | 2014-10-08 | 2015-03-11 | 四川大学 | Overflow dam with dam face cantilever sills for current diversion and energy dissipation |
| CN106958235A (en) * | 2017-03-29 | 2017-07-18 | 福建省水利水电勘测设计研究院 | The Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater |
-
2010
- 2010-12-29 CN CN2010206870513U patent/CN201933472U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704449A (en) * | 2012-06-25 | 2012-10-03 | 中国水电顾问集团中南勘测设计研究院 | Big-discharge efficient energy dissipater structure of narrow river valley arch dam |
| CN102900054A (en) * | 2012-10-25 | 2013-01-30 | 中国水电顾问集团北京勘测设计研究院 | River bank-like flood spillway |
| CN102912771A (en) * | 2012-11-08 | 2013-02-06 | 四川大学 | Stepped surface local sidewall for air entrainment and cavitation alleviation behind X-type flaring gate pier |
| CN102912771B (en) * | 2012-11-08 | 2014-10-15 | 四川大学 | Stepped surface local sidewall for air entrainment and cavitation alleviation behind X-type flaring gate pier |
| CN104404926A (en) * | 2014-10-08 | 2015-03-11 | 四川大学 | Overflow dam with dam face cantilever sills for current diversion and energy dissipation |
| CN104404926B (en) * | 2014-10-08 | 2016-07-27 | 四川大学 | Dam facing chooses the overfall dam of bank shunting energy dissipating |
| CN106958235A (en) * | 2017-03-29 | 2017-07-18 | 福建省水利水电勘测设计研究院 | The Hydraulic Design Method of water conservancy diversion bank-baffle pier-beam column construction baffle wall style combined energy dissipater |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |
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| CX01 | Expiry of patent term |