CN204662380U - A kind of bench spillway - Google Patents

A kind of bench spillway Download PDF

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Publication number
CN204662380U
CN204662380U CN201520347538.XU CN201520347538U CN204662380U CN 204662380 U CN204662380 U CN 204662380U CN 201520347538 U CN201520347538 U CN 201520347538U CN 204662380 U CN204662380 U CN 204662380U
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CN
China
Prior art keywords
energy dissipating
section
spillway
bench
cushion pool
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.)
Expired - Fee Related
Application number
CN201520347538.XU
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Chinese (zh)
Inventor
晋良海
罗汉
梁巧秀
张荣坤
肖金克
李宬
韩兰珍
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China Three Gorges University CTGU
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China Three Gorges University CTGU
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Priority to CN201520347538.XU priority Critical patent/CN204662380U/en
Application granted granted Critical
Publication of CN204662380U publication Critical patent/CN204662380U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of bench spillway, flood spillway face is provided with energy dissipating section and energy dissipating bank; Energy dissipating section is made up of multiple cushion pool, and cushion pool is made up of the mattress lip of this layer of step, step horizontal segment and step vertical section.Overflow weir cross section is WES curve, and WES curve is connected with changeover portion, and changeover portion is connected with energy dissipating section.A cushion pool of energy dissipating section least significant end is connected with energy dissipating bank, and forms absorption basin.By adopting the mode arranging mattress lip on every grade of step, current to be overflow big vast section through overflow weir and straight transitions section to step, by the cushion pool on step at different levels and energy dissipating, improve energy dissipating efficiency, avoiding overflow can because collision produces a large amount of fog shine into significant damage to equipment for hydroelectric station with surrounding enviroment when clashing into every grade of step, and the water wing current phenomenon that steep slope stepped spillways occurs, water wing washes away bank slope or cave-in accident is caused on adjacent building basis.Also avoid water wing cause enormous impact to absorption basin floor and make it be destroyed simultaneously.

Description

A kind of bench spillway
Technical field
The utility model relates to the flood protection device of water construction thing, particularly a kind of bench spillway.
Background technology
In Hydraulic and Hydro-Power Engineering, the Energy Dissipation Modes that traditional flood releasing structure is conventional is submerged bucket dissipator, disspation through hydraudic jimp and flip trajectory bucket.The energy dissipating of Modern New energy dissipater step is compared traditional energy dissipating and is had some advantages: as high in energy dissipating efficiency; Construction investment is little; Easy adaptation mechanization construction requirement, the duration is short, can come into operation as early as possible; Reduce building generation cavitation erosion, reduce building maintenance expense.
But also there are some defects in bench spillway.Under flood discharge state, overflow can produce a large amount of fog to equipment for hydroelectric station because collide when clashing into every grade of step, and surrounding enviroment shine into significant damage.A kind of water wing current phenomenon that bench spillway occurs when flood discharge flow is less at the bottom of large slope, water wing is crossed conference and is crossed abutment wall, wash away bank slope or cave-in accident is caused on adjacent building basis, also huge water smoke may be produced because of flip shot current, What is more, water wing may be crossed all steps and directly enter absorption basin, and huge impact force can make absorption basin floor bear immense pressure and destroy.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of bench spillway, can solve the relevant issues such as water wing, water smoke that traditional bench spillway fault of construction causes, also improve the effect of energy dissipation of flood spillway.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of bench spillway, is characterized in that: flood spillway face is provided with energy dissipating section and energy dissipating bank;
Energy dissipating section is made up of multiple cushion pool, and cushion pool is made up of the mattress lip of this layer of step, step horizontal segment and step vertical section.
In preferred scheme, described mattress lip is arranged on every grade of step one end near downstream direction, and between its axis and horizontal segment, angle is less than 90 °.
In preferred scheme, the overflow weir cross section of described flood spillway is WES curve, and WES curve is connected with changeover portion, and changeover portion is connected with energy dissipating section.
In preferred scheme, a cushion pool of described energy dissipating section least significant end is connected with energy dissipating bank, and forms absorption basin.
In preferred scheme, described energy dissipating section is formed by connecting by waterproofing mortar by multiple prefabricated step.
In preferred scheme, in described prefabricated step, be provided with precast reinforced and dowel.
In preferred scheme, described be precast reinforcedly vertically set on mattress lip position, dowel is horizontally disposed with and connects prefabricated step and dam main body.
A kind of bench spillway that the utility model provides, by adopting the mode arranging mattress lip on every grade of step, current to be overflow big vast section through overflow weir and straight transitions section to step, by the cushion pool on step at different levels and energy dissipating, current finally flow into absorption basin, avoiding overflow can because collision produces a large amount of fog to equipment for hydroelectric station when clashing into every grade of step, and surrounding enviroment shine into significant damage, and the water wing current phenomenon that steep slope stepped spillways occurs, water wing washes away bank slope or cave-in accident is caused on adjacent building basis.Also avoid water wing to cross all steps and directly enter absorption basin simultaneously, enormous impact is caused to absorption basin floor and makes it be destroyed.Ponding in cushion pool structure forms water subfill, and water subfill can produce better effect of energy dissipation to current, and water impact water subfill serves effect of energy dissipation more better than traditional bench spillway.Meanwhile, release floodwatering flow can flow to two sides with the direction perpendicular to current after shock mattress lip in cushion pool, and the vertical current that adjacent spout hole produces collide the effect that also can reach energy dissipating mutually.And by arranging precast reinforced and dowel, further increase pull resistance and the impact resistance of step.Between adjacent two pieces of prefabricated steps, adopt the mortar stitching with high strength, high water proofing property, on-the-spot lifting plate effect, accelerating construction progress, reduces shuttering work amount simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Fig. 1 is side-looking structural representation of the present utility model.
Fig. 2 is main TV structure schematic diagram of the present utility model.
Fig. 3 is plan structure schematic diagram of the present utility model.
Fig. 4 is adjacent two step link position structural representations of the present utility model.
In figure: step horizontal segment 1, mattress lip 2, cushion pool 3, energy dissipating section 4, WES curve 5, changeover portion 6, absorption basin 7, energy dissipating bank 8, dowel 9, waterproofing mortar 10, precast reinforced 11, prefabricated step 12.
Detailed description of the invention
Embodiment 1:
Arrange mattress lip in one end of prefabricated step horizontal segment and next stage step vertical section link position, mattress lip is set to inclined plane near the one side of next stage step, is tilted by downstream upstream direction, and slope, inclined plane ratio can be set to 1:0.2.The vertical embedded bar in mattress lip position, a dowel part is embedded in prefabricated step, and a part is outside prefabricated step.
The mortar of high strength, high water proofing property and dam body is utilized to sew up between adjacent two-stage step.
When in reservoir, water level exceedes margin of safety, current flow out from flood spillway to downstream, current flow down from storage dam mouth, the water subfill that every grade of step is formed with cushion pool internal water accumulation produces and collides, flow energy is caused to lose, prevent current from jumping up along step surface at first order step simultaneously, avoid the generation of water wing and water smoke.Meanwhile, remaining water impact force reduction pool bottom and shock limit wall cause flow energy to lose, and current form hydraulic jump in absorption basin, the energy loss that the collision between the turbulent fluctuation of current and water body causes further.
by the way streaming potential is eliminated, be compared to traditional bench spillway, flood spillway provided by the utility model more effectively can avoid the generation of water wing and water smoke, avoid water wing to the impact of flood spillway surrounding buildings and water smoke to the impact of power station surrounding devices, also improve the effect of energy dissipation of flood spillway.

Claims (7)

1. a bench spillway, is characterized in that: flood spillway face is provided with energy dissipating section (4) and energy dissipating bank (8);
Energy dissipating section (4) is made up of multiple cushion pool (3), and cushion pool (3) is made up of the mattress lip (2) of this layer of step, step horizontal segment (1) and step vertical section (13).
2. a kind of bench spillway according to claim 1, is characterized in that: described mattress lip (2) is arranged on every grade of step one end near downstream direction, and between its axis and horizontal segment (1), angle is less than 90 °.
3. a kind of bench spillway according to claim 1, is characterized in that: the overflow weir cross section of described flood spillway is WES curve (5), and WES curve (5) is connected with changeover portion (6), and changeover portion (6) is connected with energy dissipating section (4).
4. a kind of bench spillway according to claim 1, is characterized in that: a cushion pool (3) of described energy dissipating section (4) least significant end is connected with energy dissipating bank (8), and forms absorption basin (7).
5. a kind of bench spillway according to claim 1, is characterized in that: described energy dissipating section (4) is formed by connecting by waterproofing mortar (10) by multiple prefabricated step (12).
6. a kind of bench spillway according to claim 5, is characterized in that: be provided with precast reinforced (11) and dowel (9) in described prefabricated step (12).
7. a kind of bench spillway according to claim 6, it is characterized in that: described precast reinforced (11) are vertically set on mattress lip (2) position, dowel (9) is horizontally disposed with and connects prefabricated step (12) and dam main body.
CN201520347538.XU 2015-05-27 2015-05-27 A kind of bench spillway Expired - Fee Related CN204662380U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520347538.XU CN204662380U (en) 2015-05-27 2015-05-27 A kind of bench spillway

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520347538.XU CN204662380U (en) 2015-05-27 2015-05-27 A kind of bench spillway

Publications (1)

Publication Number Publication Date
CN204662380U true CN204662380U (en) 2015-09-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105625256A (en) * 2016-03-22 2016-06-01 黄河勘测规划设计有限公司 Arranging structure for flow drainage weir of ditch
CN105714747A (en) * 2016-02-29 2016-06-29 河海大学 Stepped energy dissipator with convex bodies and flow diffusers and energy dissipation method
CN105756022A (en) * 2016-03-03 2016-07-13 河海大学 Method for preventing water of release structure from over-step flowing and stepped energy dissipater
CN111778938A (en) * 2020-07-15 2020-10-16 河北工程大学 Stepped energy dissipater

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105714747A (en) * 2016-02-29 2016-06-29 河海大学 Stepped energy dissipator with convex bodies and flow diffusers and energy dissipation method
CN105756022A (en) * 2016-03-03 2016-07-13 河海大学 Method for preventing water of release structure from over-step flowing and stepped energy dissipater
CN105756022B (en) * 2016-03-03 2017-11-03 河海大学 Outlet structure escape works current are bypassed the immediate leadership the prevention and controls and ladder energy dissipater of flowing
CN105625256A (en) * 2016-03-22 2016-06-01 黄河勘测规划设计有限公司 Arranging structure for flow drainage weir of ditch
CN111778938A (en) * 2020-07-15 2020-10-16 河北工程大学 Stepped energy dissipater
CN111778938B (en) * 2020-07-15 2021-07-30 河北工程大学 Stepped energy dissipater

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150923

Termination date: 20160527