CN104179158A - Stilling pool - Google Patents
Stilling pool Download PDFInfo
- Publication number
- CN104179158A CN104179158A CN201410455036.9A CN201410455036A CN104179158A CN 104179158 A CN104179158 A CN 104179158A CN 201410455036 A CN201410455036 A CN 201410455036A CN 104179158 A CN104179158 A CN 104179158A
- Authority
- CN
- China
- Prior art keywords
- absorption basin
- tail
- tail bank
- bank
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a stilling pool which is good in energy dissipation effect and low in construction cost. The stilling pool comprises a tail pit. A gap is formed in the middle of the tail pit, so that the tail pit is in a concave shape. The length of the gap is 1/2 to 2/3 that of the tail pit. The height of the bottom of the gap is 0 to 1/2 that of the tail pit. The stilling pool has the significant effect on flow dispersion, can be suitable for large-range flow changes and can save work amount, and the novel stilling pool can achieve energy dissipation.
Description
Technical field
The present invention relates to Hydraulic and Hydro-Power Engineering technical field, especially relate to a kind of New Type Energy Dissipator build absorption basin of discharge construction.
Background technology
Absorption basin is to impel under outlet structure escape works to sluice and flow the energy-dissipating installation that produces underflow type hydraulic jump in downstream.By hydraulic jump, the torrent that outlet structure escape works are released changes unhurried current into, to eliminate the Energy Dissipation Modes of kinetic energy.Generally the kinetic energy of lower sluicing stream can be eliminated to 40%～70%, and can shorten protection-apron length, be a kind of effective and economic energy-dissipating installation.It has fluid stable, and effect of energy dissipation is better, to geological conditions and tail water luffing strong adaptability, and the advantage such as tail water fluctuation is little.But the construction of existing absorption basin exist earthwork evacuation amount and concrete square amount larger, the deficiency that construction costs is higher.In addition, upper pond level is large to the drop of the first section that jumps, therefore this place's flow velocity is high, in the time that Froude number Fr is lower, the kinetic energy of dissipation is few, and complementary energy is many, and complementary energy is exactly mainly the potential energy that water depth after jump is expressed.Therefore, how the energy dissipating load in absorption basin transferred to downstream river course and reduce the washing away of left and right bank slope, in reducing native stone excavated volume, reducing construction costs, thering is important theory value and and engineering significance to solving the larger problem of water depth after jump that complementary energy brings.
Summary of the invention
The present invention has overcome shortcoming of the prior art, provides a kind of effect of energy dissipation good, the absorption basin that construction costs is low.
In order to solve the problems of the technologies described above, absorption basin of the present invention only arranges the absorption basin tail bank of suitable height in absorption basin afterbody arranged on left and right sides, and the mid portion at absorption basin afterbody main flow place is not established tail bank, and the little bank of suitable height is only set.Its hydraulics feature is: make the best use of the situation to going out pond current; allow main flow directly go out pond; main flow is washed away underwater bed middle part; what form rushes hole and has virtually increased the length of absorption basin; make down to let out water energy disappears and stops in absorption basin and downstream river course punching hole; the tail bank of the left and right sides chooses current to surface simultaneously, makes like this two sides side slope obtain good protection.The main flow that the little bank of the mid portion setting at absorption basin afterbody main flow place makes this position go out current bottom, pond is provoked, and has reduced, to moving washing away of the position that surely has a common boundary, to have strengthened the stability after absorption basin tail bank, has saved construction investment.
Concrete technical scheme is as follows:
A kind of absorption basin, comprises tail bank, and the middle part of described tail bank arranges breach, makes tail bank form concave shape; The length of described breach is 1/2～2/3 of tail bank length, and the height of described breach bottom is 0～1/2 of tail bank height.
Preferably, the length of described breach is 1/2 of tail bank length, and the height of described breach bottom is 0～1/3 of tail bank height.
Preferably, described breach is positioned at a tail bank middle part side to the right.
Preferably, the cross section of described indentation, there is trapezoidal.
Preferably, the wall thickness of described indentation, there is less than the wall thickness of tail bank.
Compared with prior art, tool of the present invention has the following advantages:
1, versatility is more intense, is substantially applicable to all power stations that are provided with absorption basin type that the level of tail water is high.
2, reduced concrete engineering quantity, saved construction investment, made two sides, left and right bank slope obtain good protection.
3, make the best use of the situation to going out pond current, allow main flow directly go out pond, main flow is carried out lumped scour to underwater bed middle part, and rushing hole and virtually having increased the length of absorption basin of formation, makes down to let out water energy at absorption basin and punching hole, downstream inner dissipation.
4, by the energy dissipating load sharing of originally wanting absorption basin to bear to underwater bed, make the safety of absorption basin, dam obtain further guarantee.By contrast, be middle bank absorption basin, fall the energy dissipater such as ridge underflow stilling basin or flaring gate pier build and all do not reach this effect of energy dissipation.
5, the mid portion at absorption basin afterbody main flow place arranges the main flow that little bank that breach forms makes this position go out pond main flow bottom and provokes, and has reduced, to the washing away of the moving position that surely has a common boundary, to strengthen the stability after absorption basin tail bank.
6, the absorption basin that tail bank is offered breach has comparatively significant effect to the dispersion of flow, can adapt to the variation of flow in a big way, can save engineering quantity, is a kind of novel energy dissipater's build.It has different energy dissipating designs from flaring gate pier, and the latter is the dose rate that disappears improving in absorption basin, and the former shifts and disperses absorption basin energy dissipating load, and it is to reducing costs tool significance.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is absorption basin plan structure schematic diagram of the present invention.
Fig. 2 is absorption basin perspective view of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not paying the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Absorption basin shown in Fig. 1 and Fig. 2, comprises tail bank 1, and the middle part of described tail bank 1 arranges breach 2, makes tail bank 1 form concave shape; The length of described breach 2 is 1/2～2/3 of tail bank 1 length, and the height of described breach 2 bottoms is 0～1/2 of tail bank 1 height, and as preferably, the length of described breach 2 is 1/2 of tail bank 1 length, and the height of described breach 2 bottoms is 1/3 of tail bank 1 height.
Wherein, described breach 2 is preferably positioned at a tail bank middle part side to the right, protects slope, left bank to use when the main flow of bottom, pond is provoked.The cross section at described breach 2 places is trapezoidal, and the wall thickness at described breach 2 places is less than the wall thickness of tail bank 1.
Absorption basin on certain test power station is arranged the tail bank of this structure: this power station absorption basin base plate is 61m to the dam crest discrepancy in elevation, the dark 8m of absorption basin, and the long 80m in pond, absorption basin base plate and outlet protection-apron elevation are 292m.The absorption basin tail bank of high 8m is set on the left and right both sides of absorption basin afterbody, and the mid portion at absorption basin afterbody main flow place forms breach, notch length b=36.5m, breach bottom level 2m.
Model testing shows that gap type absorption basin tail bank has obviously reduced absorption basin load, and water depth after jump (punching hole) obviously reduces, and moving the washing away obviously of position of surely having a common boundary reduces, and produces a desired effect.The present invention to underwater bed, makes the safety of absorption basin, dam obtain further guarantee the energy dissipating load sharing of wanting absorption basin to bear originally.It can effectively reduce concrete engineering quantity, saves construction investment, makes two sides, left and right bank slope obtain good protection.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. an absorption basin, comprises tail bank (1), it is characterized in that: the middle part of described tail bank (1) arranges breach (2), makes tail bank (1) form concave shape; The length of described breach (2) is 1/2～2/3 of tail bank (1) length, and the height of described breach (2) bottom is 0～1/2 of tail bank (1) height.
2. absorption basin according to claim 1, is characterized in that: the length of described breach (2) is 1/2 of tail bank (1) length, and the height of described breach (2) bottom is 0～1/3 of tail bank (1) height.
3. absorption basin according to claim 1, is characterized in that: described breach (2) is positioned at a tail bank middle part side to the right.
4. absorption basin according to claim 1, is characterized in that: the cross section that described breach (2) is located is trapezoidal.
5. absorption basin according to claim 1, is characterized in that: the wall thickness that described breach (2) is located is less than the wall thickness of tail bank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455036.9A CN104179158B (en) | 2014-09-10 | 2014-09-10 | A kind of stiling basin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410455036.9A CN104179158B (en) | 2014-09-10 | 2014-09-10 | A kind of stiling basin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104179158A true CN104179158A (en) | 2014-12-03 |
| CN104179158B CN104179158B (en) | 2016-08-24 |
Family
ID=51960478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410455036.9A Active CN104179158B (en) | 2014-09-10 | 2014-09-10 | A kind of stiling basin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104179158B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2450103C2 (en) * | 2010-07-27 | 2012-05-10 | ФГОУ ВПО "Кабардино-Балкарская государственная сельскохозяйственная академия" | Energy dissipator |
| CN203049551U (en) * | 2013-02-01 | 2013-07-10 | 中国水电顾问集团贵阳勘测设计研究院 | Overflow face energy dissipation structure for rock overflow cofferdam |
| CN203514274U (en) * | 2013-09-26 | 2014-04-02 | 中国长江三峡集团公司 | Crashing type combined underflow energy dissipater structure |
| CN204097976U (en) * | 2014-09-10 | 2015-01-14 | 中国电建集团昆明勘测设计研究院有限公司 | A kind of absorption basin |
-
2014
- 2014-09-10 CN CN201410455036.9A patent/CN104179158B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2450103C2 (en) * | 2010-07-27 | 2012-05-10 | ФГОУ ВПО "Кабардино-Балкарская государственная сельскохозяйственная академия" | Energy dissipator |
| CN203049551U (en) * | 2013-02-01 | 2013-07-10 | 中国水电顾问集团贵阳勘测设计研究院 | Overflow face energy dissipation structure for rock overflow cofferdam |
| CN203514274U (en) * | 2013-09-26 | 2014-04-02 | 中国长江三峡集团公司 | Crashing type combined underflow energy dissipater structure |
| CN204097976U (en) * | 2014-09-10 | 2015-01-14 | 中国电建集团昆明勘测设计研究院有限公司 | A kind of absorption basin |
Non-Patent Citations (1)
| Title |
|---|
| 陈端等: ""表底孔与消力池联合消能水力学研究"", 《人民长江》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104179158B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103266583B (en) | Bent slope underflow energy dissipation structure of water conservancy and hydropower engineering | |
| CN101886374B (en) | Groove bottom-reinforced fully lined debris flow drainage groove and construction method thereof | |
| CN104863098B (en) | Danger-elimination refitting method for stilling pool downstream energy dissipater | |
| CN204662380U (en) | A kind of bench spillway | |
| CN202559320U (en) | Side aeration ramp for reducing water surface fluctuation of stilling pool | |
| CN102900054A (en) | River bank-like flood spillway | |
| CN104234013A (en) | Reservoir dam | |
| CN107022987A (en) | High dam spillwag chute jet vectoring structure | |
| CN203530941U (en) | Split-level and dislocated type multiple-grooved spillway structure | |
| CN204982814U (en) | Power that disappears structure in low water head dam low reaches riverbed | |
| CN209384207U (en) | A kind of efficient bevel-type waterpower stilling pool slab | |
| CN103266584B (en) | A kind of hydraulic engineering energy dissipating construction | |
| CN107044111B (en) | Three-dimensional grid structure for draining water gravity dam energy dissipation and energy dissipation method | |
| CN204097976U (en) | A kind of absorption basin | |
| CN114108575B (en) | Stepped grading spillway with energy dissipation effect | |
| CN109339006B (en) | Efficient cone-type hydraulic power absorption well and construction method thereof | |
| CN104179158A (en) | Stilling pool | |
| CN107806065B (en) | Stage beam flow type debris flow drainage groove and application thereof | |
| CN203878546U (en) | Culvert with energy dissipation function | |
| CN203808025U (en) | Intercepting ditch structure for steeper terrain | |
| CN106869090A (en) | Dreg-blocking board sub-assembly and diversion tunnel debris retaining Slagoff method | |
| CN203530942U (en) | High water head bottom hole flood discharge and energy dissipation structure | |
| CN207193875U (en) | A kind of debris flow drainage groove for increasing resistance based on section | |
| CN107326876B (en) | Non-closed non-pumping drainage plunge pool structure | |
| CN105019414A (en) | Composite lock chamber structure for narrow water intake of mountain hydropower project |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |