CN202530433U - Flaring pier structure of flood discharge and energy dissipation system in hydraulic and hydro-power engineering - Google Patents
Flaring pier structure of flood discharge and energy dissipation system in hydraulic and hydro-power engineering Download PDFInfo
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- CN202530433U CN202530433U CN2012201168881U CN201220116888U CN202530433U CN 202530433 U CN202530433 U CN 202530433U CN 2012201168881 U CN2012201168881 U CN 2012201168881U CN 201220116888 U CN201220116888 U CN 201220116888U CN 202530433 U CN202530433 U CN 202530433U
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- 230000003628 erosive effect Effects 0.000 abstract description 3
- 238000000889 atomisation Methods 0.000 abstract description 2
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Abstract
本实用新型公开了一种具有不对称宽尾墩结构、可适应工程差异化需要的水利水电工程泄洪消能系统中的宽尾墩结构，所述泄洪消能系统包含左、右闸墩，两闸墩之间的溢流面，消力池，在左、右闸墩的尾部或中后部设置有不对称的宽尾墩，宽尾墩的上游高度、顶部斜坡贴角均不对称，根据需要，还可设计闸墩的上游墩头的倒圆半径不同，在宽尾墩的出口段区域溢流面设置有小挑坎。不对称宽尾墩体型使不对称来流或对称来流通过宽尾墩后，下泄水流形态、分布得以重新调整，从而适应不同工程的差异化需要，避免局部水流冲刷边墙，确保溢流面上流态稳定，确保水流均匀进入消力池，保障相对稳定的泄洪消能效果，减轻对下游岸坡的雾化影响和冲刷等。
The utility model discloses a wide tail pier structure in a water conservancy and hydropower project flood discharge and energy dissipation system which has an asymmetric wide tail pier structure and can adapt to engineering differentiation needs. The flood discharge energy dissipation system includes left and right gate piers, two The overflow surface between the gate piers and the stilling pool are provided with asymmetric wide tail piers at the tail or middle rear of the left and right gate piers. The upstream height of the wide tail piers and the top slope angle are all asymmetrical. If necessary, the rounding radius of the upstream pier head of the gate pier can also be designed to be different, and a small ridge is provided on the overflow surface of the exit section of the wide tail pier. The shape of the asymmetric wide-end pier enables the shape and distribution of the discharge water to be readjusted after the asymmetric or symmetrical flow passes through the wide-end pier, so as to adapt to the differentiated needs of different projects, avoid local water flow from scouring the side walls, and ensure the overflow surface The upper flow state is stable, ensuring that the water flow enters the stilling basin evenly, ensuring a relatively stable flood discharge and energy dissipation effect, and reducing the impact of atomization and erosion on the downstream bank slope.
Description
Technical field
The utility model relates to the Hydraulic and Hydro-Power Engineering flood-discharge energy-dissipating structure, especially a kind of flaring gate pier structure.
Background technology
The water conservancy and hydropower multi-purpose project has been tackled the river, for draining off floodwater, generally all is provided with the flood-discharge energy-dissipating building.The sluicing stream energy is higher under the outlet structure escape works, and flow velocity is generally bigger, if do not take engineering measure to eliminate the kinetic energy of the stream that sluices down, will wash away underwater bed, jeopardizes the safety of outlet structure escape works.
At present, flood-discharge energy-dissipating form commonly used has flip trajectory bucket, disspation through hydraudic jimp etc. in the engineering.Flaring gate pier adds the utilization of succeeding in a plurality of at home engineerings of underflow flood-discharge energy-dissipating form, has obtained the engineering experience than horn of plenty.Flaring gate pier structure in the Hydraulic and Hydro-Power Engineering flood-discharge energy-dissipating system comprises spillwag chute, absorption basin between gate pier, two gate piers, at the gate pier afterbody symmetrical flaring gate pier is set.The operating principle that adds the flood-discharge energy-dissipating of flaring gate pier is, the flaring gate pier constriction current through being arranged on the gate pier postmedian, makes down that the stream that sluices vertically draws back, diffusion in the air, makes the abundant aeration of current; Change the mode that water flows into absorption basin; Make down the stream energy dissipating in absorption basin that sluices more abundant, thereby alleviate pressure fluctuation meter, reduce and face underflow speed the absorption basin base plate; Improve the flood-discharge energy-dissipating effect, guarantee the safety of earial drainage facility.
Existing flaring gate pier structure is symmetrical flaring gate pier; Receive the influence of factors such as river topography condition, geological conditions, river inlet flow conditions; And the requirement of each engineering downstream river course antiscour, anti-atomizing is different, in the process of the symmetrical flaring gate pier of utilization, has found following common problem:
(1) the river course inlet flow conditions is symmetrical basically, needs adjustment to effluent to asymmetric
To the wealthy situation of reservoir water surface broad before the lock, the flow condition of visual basically entering gate pier is symmetry status.For making full use of characteristics such as flaring gate pier " constriction current, make down that the stream that sluices vertically draws back, diffusion in the air, make the abundant aeration of current ", according to the symmetrical flaring gate pier design of routine; If the influent stream condition is symmetry basically; Possibly bring following problem: the stream that 1. sluices down vertically draws back, and local current possibly wash away the spillwag chute abutment wall, even cross the spillwag chute abutment wall; Cause the spillwag chute abutment wall to increase, increase engineering quantity and design difficulty; 2. evenly diffusion is flowed in the air in sluicing down, and the influence that the bank, downstream is atomized is bigger, and when as if bank, downstream side slope preventing atomization being had requirement, suitably sluicing flows flow path direction under the wide tail of adjustment, yet symmetrical flaring gate pier can't be accomplished this point; 3. if downstream bank slope erosion resistibility is lower, should suitably adjusts wide tail flip shot water and flow out flow path direction, alleviate current and directly wash away bank, downstream side slope, yet symmetrical flaring gate pier also can't be accomplished this point.
(2) gate pier influent stream condition is asymmetric, and it is symmetrical into basically to need adjustment to effluent
Symmetrical flaring gate pier design according to routine, if the influent stream condition is asymmetric, possibly bring following problem: 1. conventional wide tail sluicing stream subrange down possibly wash away the spillwag chute abutment wall, even crosses the spillwag chute abutment wall, causes the spillwag chute abutment wall to increase, and increases engineering quantity; 2. for many current by pass, because the stream that sluices down is laterally asymmetric, the confusion, the pulsation pressure that have aggravated the spillwag chute fluidised form increase, and influence the stability of fluidised form; 3. the stream that sluices down is inhomogeneous, causes absorption basin regional area pressure fluctuation meter to increase, and the part is faced underflow speed and increased, and is difficult to ensure good and stable relatively flood-discharge energy-dissipating effect, increases absorption basin structure design difficulty.
The utility model content
In order to overcome the deficiency that can't satisfy concrete working condition requirement when existing symmetrical flaring gate pier is used comprehensively, the utility model technical problem to be solved provides a kind ofly to be had asymmetric flaring gate pier structure, can adapt to the flaring gate pier structure in the Hydraulic and Hydro-Power Engineering flood-discharge energy-dissipating system of engineering differentiation needs.
The utility model solves the technical scheme that its technical problem adopted: the flaring gate pier structure in the Hydraulic and Hydro-Power Engineering flood-discharge energy-dissipating system; Said flood-discharge energy-dissipating system comprises left and right gate pier; Spillwag chute between two gate piers; Absorption basin is provided with asymmetric flaring gate pier at the afterbody or the postmedian of left and right gate pier.
The upper reaches height of said flaring gate pier is asymmetric.
The top of said flaring gate pier is established asymmetric slope and is pasted the angle.
The intersection and the horizontal angle of subsides angle, said slope and gate pier are asymmetric.
Intersection and the horizontal angle that paste between angle and the flaring gate pier vertical plane on said slope are asymmetric.
The chamfering radius of the upper reaches pier nose of said left and right gate pier is different.
The outlet section zone spillwag chute of said flaring gate pier is provided with chooses bank for a short time.
The beneficial effect of the utility model is: transforming symmetrical flaring gate pier build is asymmetric flaring gate pier build, makes asymmetric incoming flow or symmetrical incoming flow through behind the flaring gate pier, and following sluicing stream form, distribution are able to readjust; Thereby the differentiation needs that adapt to different engineerings; Avoid local current scour abutment wall, guarantee fluid stable on the spillwag chute, guarantee that current evenly get into absorption basin; Ensure metastable flood-discharge energy-dissipating effect, alleviate the atomizing of downstream bank slope influence and wash away etc.
Description of drawings
Fig. 1 is the general plane arrangement diagram of the utility model.
Fig. 2 is the overall section arrangement diagram of the utility model.
Fig. 3 is that layout plan is amplified in the part of the utility model.
Fig. 4 is the abutment pier elevation of the utility model.
Fig. 5 is the middle pier elevation of the utility model.
Be labeled as among the figure, the 1-flaring gate pier, 2-flaring gate pier, 3-are chosen bank for a short time, the 4-spillwag chute, 5-left side pier, gate pier among the 6-, 7-left side spillwag chute abutment wall, the 8-pier nose, the 9-pier nose, the 10-absorption basin, the 11-current, the angle is pasted on the 12-slope, and the angle is pasted on the 13-slope.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Like Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5; Flaring gate pier structure in the Hydraulic and Hydro-Power Engineering flood-discharge energy-dissipating system of the utility model; Said flood-discharge energy-dissipating system comprises left and right gate pier; Spillwag chute 4 between two gate piers and absorption basin 10 are provided with asymmetric flaring gate pier 1,2 at the afterbody or the postmedian of left and right gate pier.The key difference of the utility model and prior art has been used the flaring gate pier 1,2 of dissymmetrical structure with being novelty; But the test of the build combination model of flaring gate pier 1,2 is optimized; To adapt to the needs under the different inlet flow conditions; Thereby reach the good effect of energy dissipation that can keep flaring gate pier, can rationally adjust down the purpose of sluicing distributions form again.
Like Fig. 1, Fig. 4 and shown in Figure 5; The upper reaches height H of said flaring gate pier 1,2 is asymmetric; Upper reaches height H can suitably be selected for use according to actual conditions such as project scale, release floodwatering flows, is adjusted into the asymmetric current of letting out down to the river course incoming flow of basic symmetry, and the stream of avoiding down sluicing washes away the spillwag chute abutment wall; Even cross the spillwag chute abutment wall, to reduce abutment wall engineering quantity and design difficulty.
Like Fig. 1, Fig. 4 and shown in Figure 5, the top of said flaring gate pier 1,2 is established asymmetric slope and is pasted angle 12,13, with adjustment earial drainage direction, reduces the flood-discharge atomizing influence basin to the downstream bank slope, alleviates the washing away the downstream bank slope of effluenting.
If the asymmetric situation of influent stream condition, asymmetric upper reaches height and slope are pasted the angle and can be adjusted to effluent and be symmetry basically, make asymmetric incoming flow through behind the flaring gate pier; Following sluicing stream is evenly distributed along journey; In the time of performance flaring gate pier adjustment flow shape, enhancing effect of energy dissipation, the problem of avoiding local current possibly wash away abutment wall is guaranteed fluid stable on the spillwag chute; Guarantee that current evenly get into absorption basin, ensure metastable flood-discharge energy-dissipating effect.
Like Fig. 1, Fig. 4 and shown in Figure 5, said asymmetric slope paste that angle 12,13 can be that the intersection of angle 12,13 and gate pier is pasted on the slope and horizontal angle is asymmetric and/or subsides angle 12,13, slope and flaring gate pier vertical plane between intersection and horizontal angle asymmetric.
As shown in Figure 1, the chamfering radius of the upper reaches pier nose 8,9 of said left and right gate pier 5,6 is different, with the asymmetric situation of further adaptation influent stream condition.The upstream extremity chamfering radius also can be got the same, realizes changing the purpose of current fully through asymmetric flaring gate pier.
Like Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, the outlet section of said flaring gate pier 1,2 zone spillwag chute is provided with chooses bank 3 for a short time, to strengthen the stream aeration effect that sluices down, subdues the issuable cavitation erosion effect of high speed flow-passing surface.When no air mixing corrosion reducing facility requires, also can not establish and choose bank 3 for a short time.
Embodiment:
The specific embodiment of the utility model is described for example with " the river course inlet flow conditions is symmetry basically, needs adjustment to effluent to asymmetric ":
Like Fig. 1～shown in Figure 5; Two gate piers are respectively left side pier 5 and middle gate pier 6, the spillwag chute 4 between left spillwag chute abutment wall 7, gate pier downstream flaring gate pier 1 and flaring gate pier 2, the gate pier and choose bank 3 for a short time, absorption basin 10 has been formed the flaring gate pier structure in the Hydraulic and Hydro-Power Engineering flood-discharge energy-dissipating system.The upper reaches pier nose 8 of left side pier 5 is different with the chamfering radius of the upper reaches pier nose 9 of right gate pier 6.
Current 11 are through the spillwag chute 4 between the gate pier; Receive the extruding constriction of asymmetric flaring gate pier 1 and 2; Changed time sluice stream fluidised form and distribution, made keep left abutment pier 5 and left spillwag chute abutment wall 7 side water surface curve height lower, making down simultaneously sluices flows main flow and departs from left spillwag chute abutment wall 7; Reduced the influence of flood-discharge atomizing, alleviated washing away of bank, current downstream the downstream bank slope.Above-mentioned flaring gate pier shrinkage ratio is that the ratio of flaring gate pier afterbody lock hole width and lock hole clear span is 0.533.
Upper reaches height H=the 5m of flaring gate pier 1, the top has the slope and pastes angle 12, the intersection that angle 12 and left side pier 5 are pasted in the slope and horizontal angle β=30 °, intersection between subsides angle 12, slope and flaring gate pier 1 vertical plane and horizon angle theta=0 °; Upper reaches height H=the 0m of flaring gate pier 2, the top has the slope and pastes angle 13, the intersection that angle 13 and right gate pier 6 are pasted in the slope and horizontal angle=16 °, intersection between subsides angle 13, slope and the flaring gate pier vertical plane and horizon angle γ=13 °.
The following stream that sluices receives to choose for a short time the jacking of bank 3, makes down the stream aeration that sluices more abundant, helps on Parallel to the flow direction, drawing back current flip shot scope, reduces the impact to spillwag chute 4 and absorption basin 10; Pier nose 8 is asymmetric with pier nose 9, also can play corrective action to the asymmetric problem of incoming flow.
To important engineering, but above-mentioned flaring gate pier build, choose the test of bank build, pier nose build combination model for a short time and further optimize.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201168881U CN202530433U (en) | 2012-03-26 | 2012-03-26 | Flaring pier structure of flood discharge and energy dissipation system in hydraulic and hydro-power engineering |
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| CN2012201168881U CN202530433U (en) | 2012-03-26 | 2012-03-26 | Flaring pier structure of flood discharge and energy dissipation system in hydraulic and hydro-power engineering |
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| CN202530433U true CN202530433U (en) | 2012-11-14 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266584A (en) * | 2013-06-05 | 2013-08-28 | 中国水利水电第七工程局有限公司 | Novel water conservancy project energy dissipater structure |
| CN104358241A (en) * | 2014-11-19 | 2015-02-18 | 石河子大学 | Novel T-shaped pier energy dissipation device |
| CN104404928A (en) * | 2014-12-09 | 2015-03-11 | 四川大学 | Gravity dam surface hole flood discharge tumble jet flow energy dissipation method |
| CN107190711A (en) * | 2017-04-28 | 2017-09-22 | 昆明理工大学 | A kind of combined energy dissipater of suitable high moisture head and small flow flood-discharge energy-dissipating |
| CN109629535A (en) * | 2018-11-27 | 2019-04-16 | 中水淮河规划设计研究有限公司 | A kind of combined energy dissipater |
| CN111058421A (en) * | 2020-01-06 | 2020-04-24 | 中国电建集团成都勘测设计研究院有限公司 | Flood discharge structure of high dam body |
| CN111945682A (en) * | 2020-09-14 | 2020-11-17 | 大连理工大学 | Energy dissipation pool with inverted triangular wedge tail pier |
| CN116770792A (en) * | 2023-08-10 | 2023-09-19 | 中国水利水电科学研究院 | s |
| CN117005373A (en) * | 2023-09-20 | 2023-11-07 | 中国电建集团成都勘测设计研究院有限公司 | Concave special-shaped stilling pool |
| CN118911088A (en) * | 2024-10-11 | 2024-11-08 | 中国电建集团西北勘测设计研究院有限公司 | Asymmetric inclined wide-tail pier provided with groove notch |
-
2012
- 2012-03-26 CN CN2012201168881U patent/CN202530433U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266584A (en) * | 2013-06-05 | 2013-08-28 | 中国水利水电第七工程局有限公司 | Novel water conservancy project energy dissipater structure |
| CN103266584B (en) * | 2013-06-05 | 2015-08-19 | 中国水利水电第七工程局有限公司 | A kind of hydraulic engineering energy dissipating construction |
| CN104358241A (en) * | 2014-11-19 | 2015-02-18 | 石河子大学 | Novel T-shaped pier energy dissipation device |
| CN104404928A (en) * | 2014-12-09 | 2015-03-11 | 四川大学 | Gravity dam surface hole flood discharge tumble jet flow energy dissipation method |
| CN107190711A (en) * | 2017-04-28 | 2017-09-22 | 昆明理工大学 | A kind of combined energy dissipater of suitable high moisture head and small flow flood-discharge energy-dissipating |
| CN107190711B (en) * | 2017-04-28 | 2019-04-12 | 昆明理工大学 | A kind of combined energy dissipater of suitable high moisture head and small flow flood-discharge energy-dissipating |
| CN109629535A (en) * | 2018-11-27 | 2019-04-16 | 中水淮河规划设计研究有限公司 | A kind of combined energy dissipater |
| CN111058421A (en) * | 2020-01-06 | 2020-04-24 | 中国电建集团成都勘测设计研究院有限公司 | Flood discharge structure of high dam body |
| CN111945682A (en) * | 2020-09-14 | 2020-11-17 | 大连理工大学 | Energy dissipation pool with inverted triangular wedge tail pier |
| CN116770792A (en) * | 2023-08-10 | 2023-09-19 | 中国水利水电科学研究院 | s |
| CN117005373A (en) * | 2023-09-20 | 2023-11-07 | 中国电建集团成都勘测设计研究院有限公司 | Concave special-shaped stilling pool |
| CN118911088A (en) * | 2024-10-11 | 2024-11-08 | 中国电建集团西北勘测设计研究院有限公司 | Asymmetric inclined wide-tail pier provided with groove notch |
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Address after: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee after: Chengdu Hydroelectric Investigation & Design Institute of SPC Address before: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee before: Chengdu Hydroelectric Investigation & Design Institute of China Hydropower Consu |
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| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER GROUP CHENGDU INVESTIGATION DESIGN + R Free format text: FORMER NAME: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTITUTE OF SPC |
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| CP01 | Change in the name or title of a patent holder |
Address after: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee after: Co., Ltd of Chengdu survey and design academy of electricity Jian group of China Address before: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Patentee before: Chengdu Hydroelectric Investigation & Design Institute of SPC |
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Granted publication date: 20121114 |