CN107513985A - A kind of afterbody abutment wall recession formula defrlector bucket - Google Patents
A kind of afterbody abutment wall recession formula defrlector bucket Download PDFInfo
- Publication number
- CN107513985A CN107513985A CN201710680740.8A CN201710680740A CN107513985A CN 107513985 A CN107513985 A CN 107513985A CN 201710680740 A CN201710680740 A CN 201710680740A CN 107513985 A CN107513985 A CN 107513985A
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- changeover portion
- abutment wall
- bank
- afterbody
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Abstract
A kind of afterbody abutment wall recession formula defrlector bucket, it is connected by the changeover portion and one end that are connected with spillway downstream end with changeover portion, what the other end was connected with river course chooses bank section composition, the changeover portion is made up of the abutment wall of changeover portion bottom plate and changeover portion bottom plate both sides, the width of changeover portion bottom plate is identical with the width of spillway bottom plate, the bank section of choosing is formed by choosing bank section bottom plate and choosing the abutment wall of bank section bottom plate both sides, it is concave up curved surface to choose bank section bottom plate, or along water (flow) direction successively by being located at the planar section of same elevation with changeover portion bottom plate and concave up curved sections are connected and formed, the delivery port of bank segment trailer is chosen by choosing bank section both sides or side afterbody abutment wall is dropped back the side delivery port that is formed, inclined cutout delivery port and outlet water at tail end mouth combine.Above-mentioned defrlector bucket is used for narrow and bending river course, weakens unilateral flip shot current and river course opposite bank is washed away, reduce surging for impact opposite bank riverbank, ensures riverbank safety.
Description
Technical field
The invention belongs to choose bank field in hydraulic engineering flip trajectory bucket facility, and in particular to a kind of abutment wall recession formula is chosen
Bank.
Background technology
Flip trajectory bucket is wide variety of energy dissipation type in hydraulic engineering, and operating head polishing is big more than 70m outlet structure escape works
Majority uses flip trajectory bucket.The working method of flip trajectory bucket is that current are introduced into current by pass, then chooses current from water through bucket lip
Work is built, and is cast current into the air using the guide effect of the kinetic energy and bucket lip of current, is fallen into downstream.The maximum of flip trajectory bucket
Advantage is that engineering structure is simple, is easy to build, cost is relatively low.Existing flip trajectory bucket bucket lip is various informative, can be divided into
Three classes：When continuous flip bucket, second, slit, third, bank is chosen in beveling.Wherein beveling is chosen bank and applied in Practical Project
The most extensively, being mainly characterized by close to river course upstream side bottom plate and the closer lower reaches of river one of abutment wall length of bank is chosen in beveling
Side bottom plate and abutment wall length are short, and the afterbody delivery port of formation is the inclined cutout delivery port shown in Fig. 7, in use, inclined cutout water outlet
Mouth is generally parallel with river course, therefore closer to the distance close to the current flip shot of river course upstream side, by the current of river course downstream side
Flip shot is distant, and it is longitudinally elongated along river to move the water to flow into water scope, avoids into water close to downstream riverbank.But for narrow and curved
Bent river course, the place of entry of the current of close river course downstream side are deposited easily close to opposite bank due to entering water direction and river course
In angle, current will be caused with higher velocity shock opposite bank riverbank, cause to occur at the riverbank of opposite bank it is larger surge, jeopardize pair
The safety on bank riverbank.For this problem, existing solution is typically to widen downstream river course, and reinforces opposite bank bank slope, so
Substantially increase engineering cost and duration.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of afterbody abutment wall drop back formula defrlector bucket, with
For narrow and bending river course, weaken unilateral flip shot current and river course opposite bank is washed away, reduce surging for impact opposite bank riverbank.
Technical scheme：The afterbody delivery port for choosing bank to existing beveling is improved, and forms many places dispersion effluent
Delivery port, to disperse overboard scope and form waterwall, reduce surging for impact river course opposite bank.
Afterbody abutment wall recession formula defrlector bucket of the present invention, by the changeover portion being connected with spillway downstream end and one end
Be connected with changeover portion, the other end is connected with river course chooses bank section composition, the changeover portion is by changeover portion bottom plate and changeover portion bottom plate
The abutment wall composition of both sides, the width of changeover portion bottom plate is identical with the width of spillway bottom plate, and the bank section of choosing is by choosing bank section bottom plate
With choose bank section bottom plate both sides abutment wall form, it is concave up curved surface to choose bank section bottom plate, or along water (flow) direction successively by with transition
Section bottom plate is located at the planar section of same elevation and the linking of concave up curved sections forms, and chooses the delivery port of bank segment trailer by choosing bank section
The drop back side delivery port to be formed, inclined cutout delivery port and outlet water at tail end mouth of both sides or side afterbody abutment wall combines.
Above-mentioned afterbody abutment wall recession formula defrlector bucket, its outlet water at tail end mouth is linear delivery port or arc line shaped delivery port；
When outlet water at tail end mouth is linear delivery port, its width B2 is less than or equal to the 1/3 of changeover portion baseplate width B1；When end goes out
When the mouth of a river is arc line shaped delivery port, its Breadth Maximum B3 is less than or equal to the 1/3 of changeover portion baseplate width B1.
Above-mentioned afterbody abutment wall is dropped back formula defrlector bucket, its choose the length L2 of bank section one or both sides afterbody abutment wall recession or/
It is less than or equal to the 1/2 of changeover portion baseplate width B1 with L4.
Above-mentioned afterbody abutment wall is dropped back formula defrlector bucket, the angle α of its inclined cutout delivery port and changeover portion abutment wall for 10~
60°。
Above-mentioned afterbody abutment wall is dropped back formula defrlector bucket, and the left hand edge for choosing bank section bottom plate water (flow) direction is and changeover portion bottom plate
The linear (corresponding choose bank section abutment wall be plane abutment wall) of left hand edge linking, choose the right hand edge of bank section bottom plate water (flow) direction for and mistake
The arc line shaped (it is cambered surface abutment wall to correspond to and choose bank section abutment wall) of the tangent linking of right hand edge of section bottom plate is crossed, cambered surface abutment wall causes current to exist
Choose in bank and turn to, so that flip shot water (flow) direction falls into river course center as far as possible, and it is as consistent with streamflow direction as possible.
Compared with prior art, the invention has the advantages that：
1st, afterbody abutment wall recession formula defrlector bucket of the present invention, because afterbody delivery port is by choosing bank section both sides or side tail
Abutment wall the drop back side delivery port to be formed, inclined cutout delivery port and outlet water at tail end mouth in portion's combines, thus can flow into flip shot water
One step is pulled open, and disperses overboard scope, is moved the water to flow into water scope and is adapted to stream shape and depth of water situation, makes full use of natural river course water
Body increases energy dissipating, downstream river course is narrow and bending etc. under unfavorable conditions with it is existing chamfer choose bank compared with, current can be weakened to river
Road opposite bank is washed away.
2nd, afterbody abutment wall recession formula defrlector bucket of the present invention, in use, the inclined cutout delivery port of its afterbody delivery port
Angle arrangement is formed with river course, the combination of inclined cutout delivery port and outlet water at tail end mouth, the flip shot close to river course upstream side can be made
Water forms one waterwall after flowing into water, prevents another part flow direction opposite bank, downstream river course is narrow and the unfavorable bar such as bending
Surging for impact opposite bank is reduced under part, ensures riverbank safety.
Brief description of the drawings
Fig. 1 is the first build schematic diagram of afterbody abutment wall of the present invention recession formula defrlector bucket；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is the arrangement schematic diagram in afterbody abutment wall recession formula defrlector bucket and river course described in Fig. 1；
Fig. 4 is second of build schematic diagram of afterbody abutment wall of the present invention recession formula defrlector bucket；
Fig. 5 is Fig. 4 A-A sectional views；
Fig. 6 is the arrangement schematic diagram in afterbody abutment wall recession formula defrlector bucket and river course described in Fig. 4；
Fig. 7 is that the structure of bank and the arrangement schematic diagram with river course are chosen in existing beveling.
In figure, 1- chooses bank section leftwall, and 2- chooses bank section RightWall, 3- changeover portion leftwalls, 4- changeover portion RightWalls, and 5- chooses
Bank section bottom plate curved sections, 6- choose bank section base plate plane section, 7- changeover portion bottom plates, and 8- chooses bank section curved surface patch angle, and 9- is chosen on the left of bank section
Abutment wall is dropped back the left side delivery port to be formed, and 10- inclined cutout delivery ports, 11- linear outlet water at tail end mouths, 12- arc line shapeds end goes out
The mouth of a river, 13- choose abutment wall on the right side of bank section and dropped back the right side delivery port to be formed, and 14-, which chooses, wanders pool, 15- river courses, B1- changeover portions bottom
Plate width, B2- linear outlet water at tail end mouth width, B3- arc line shaped outlet water at tail end mouth Breadth Maximums, L1- inclined cutout delivery ports
Horizontal length, L2- choose bank section leftwall recession length, and L3- chooses bank section horizontal length, and L4- chooses bank section RightWall recession length,
L5- arc line shaped outlet water at tail end mouth horizontal lengths, L6- choose the curved sections horizontal length of bank section bottom plate, L7- transition section lengths, and R1- chooses
The radius of curvature of the curved sections of bank section bottom plate, R2- choose bank section RightWall radius of curvature, R3- arc line shaped outlet water at tail end mouth bending half
Footpath, the angle of α-inclined cutout delivery port and changeover portion abutment wall.
Embodiment
Afterbody abutment wall of the present invention recession formula defrlector bucket is described further below by embodiment.
Embodiment 1
There is zig zag in certain river course, spillway outlet is located exactly at river course turning, according to river course condition at its sharp turn
Arrange the present embodiment shown in afterbody abutment wall recession formula defrlector bucket, the structure of the defrlector bucket as shown in Figure 1 and Figure 2, with river course
Position relation it is as shown in Figure 3.
As shown in Figure 1 and Figure 2, afterbody abutment wall recession formula defrlector bucket described in the present embodiment, by being held in the mouth with spillway downstream end
The bank section of choosing that the changeover portion and one end connect is connected with changeover portion, the other end is connected with river course forms, and the changeover portion is by changeover portion
The leftwall 3 and RightWall 4 of bottom plate 7 and changeover portion bottom plate both sides form, the width of changeover portion bottom plate 7 and the width of spillway bottom plate
Spend identical, the bank section of choosing chooses bank section bottom plate by choosing bank section bottom plate and choosing bank section bottom plate both sides leftwall 1 and RightWall 2 forms
Along water (flow) direction successively by being located at the planar section 6 of same elevation with changeover portion bottom plate and concave up curved sections 5 are connected and formed, choose
The left hand edge of bank section bottom plate water (flow) direction is the linear being connected with the left hand edge of changeover portion bottom plate, and correspondingly choosing bank section leftwall is
Plane abutment wall, choose bank section bottom plate water (flow) direction right hand edge be with the tangent arc line shaped being connected of the right hand edge of changeover portion bottom plate, it is right
It is cambered surface abutment wall that bank section RightWall, which should be chosen, chooses the side water outlet that the delivery port of bank segment trailer is formed by choosing bank segment trailer leftwall to drop back
Mouthfuls 9, bank segment trailer RightWall is chosen to drop back 11 groups of the side delivery port 13 to be formed, inclined cutout delivery port 10 and linear outlet water at tail end mouth
Conjunction forms.
Structural parameters and size：Changeover portion baseplate width B1 is 9m, and linear outlet water at tail end mouth width B2 is 3m, changeover portion
Length L7 is 7m, and it is 15m to choose bank section horizontal length L3, and the curved sections horizontal length L6 for choosing bank section bottom plate is 8m, chooses bank RightWall
Radius of curvature R 2 is 16m, and the radius of curvature R 1 for choosing the curved sections of bank section bottom plate is 10m, the horizontal length of inclined cutout delivery port 10
L1 is 6.5m, and the angle α of inclined cutout delivery port and changeover portion abutment wall is 22 °, and the horizontal length L4 for choosing the recession of bank section RightWall is
3m, the horizontal length L2 for choosing the recession of bank section leftwall is 2.5m.
In the present embodiment, because leftwall is dropped back, the falling zone of flip shot current is predominantly located in the left side in river course, adapts to turn
Crook streamflow direction, in addition RightWall end drop back and choose bank section bottom plate end formed linear outlet water at tail end mouth, will choose
The falling zone recession of jetting stream, so as to reduce the impact to river course opposite bank, entirely chooses flowing water stream and complies with river course tendency, reduction is chosen
Jetting stream washes away to riverbank opposite bank.
Embodiment 2
Certain section spillway exit is more broad corresponding to river course turning Upstream section, according to section condition, in turning
The more broad place of trip section arranges afterbody abutment wall recession formula defrlector bucket linking spillway and river course described in the present embodiment, described to choose stream
The structure of bucket lip is as shown in Figure 4, Figure 5, as shown in Figure 6 with the position relation in river course.
As shown in Figure 4, Figure 5, afterbody abutment wall recession formula defrlector bucket described in the present embodiment, by being held in the mouth with spillway downstream end
The bank section of choosing that the changeover portion and one end connect is connected with changeover portion, the other end is connected with river course forms, and the changeover portion is by changeover portion
The leftwall 3 and RightWall 4 of bottom plate 7 and changeover portion bottom plate both sides form, the width of changeover portion bottom plate 7 and the width of spillway bottom plate
Spend identical, the bank section of choosing chooses bank section bottom by choosing bank section bottom plate and choosing the leftwall 1 of bank section bottom plate both sides and RightWall 2 forms
Plate is concave up curved surface, and the left hand edge for choosing bank section bottom plate water (flow) direction is the straight line being connected with the left hand edge of changeover portion bottom plate
Shape, it is plane abutment wall to correspond to and choose bank section leftwall, and the right hand edge for choosing bank section bottom plate water (flow) direction is the right with changeover portion bottom plate
The arc line shaped of the tangent linking of edge and curved surface patch angle 8 is provided with, corresponding to choose bank section RightWall be cambered surface abutment wall, chooses going out for bank segment trailer
Dropped back the side delivery port 9 formed, inclined cutout delivery port 10 and shaped form outlet water at tail end mouth 12 by choosing bank segment trailer leftwall at the mouth of a river
Combine.
Structural parameters and size：Changeover portion baseplate width B1 is 10m, and transition section length L7 is 10m, chooses the horizontal overall length of bank section
Degree L3 is 20m, and it is 20m to choose bank section RightWall radius of curvature R 2, and the radius of curvature R 1 for choosing the curved sections of bank section bottom plate is 25m.Choose
Bank section leftwall retraction length L2 is 2m, and the horizontal length L1 of inclined cutout delivery port 10 is 5m, inclined cutout delivery port and changeover portion
The angle α of abutment wall is 23 °, and arc line shaped outlet water at tail end mouth Breadth Maximum B3 is 3m, the horizontal length L5 of arc line shaped outlet water at tail end mouth
For 1m, radius of curvature R 3 is 4m.
In the present embodiment, leftwall retraction to increase current falling zone scope, and arc line shaped outlet water at tail end mouth to choose
Jetting stream is closer to river course center.The setting for choosing bank section bottom plate curved surface patch angle causes flip shot current to change direction, falls into river course
Centre, the falling zone of overall flip shot current concentrates on river course center, and complies with streamflow direction, alleviates flip shot current to river course
The influence on opposite bank.
Claims (6)
- The formula defrlector bucket 1. a kind of afterbody abutment wall is dropped back, by the changeover portion being connected with spillway downstream end and one end and changeover portion What linking, the other end be connecteds with river course, which choose bank section, forms, and the changeover portion is by changeover portion bottom plate (7) and changeover portion bottom plate both sides Abutment wall (3,4) forms, and the width of changeover portion bottom plate (7) is identical with the width of spillway bottom plate, and the bank section of choosing is by choosing bank section bottom Plate and choose bank section bottom plate both sides abutment wall (1,2) composition, it is concave up curved surface to choose bank section bottom plate, or along water (flow) direction successively by It is located at the planar section (6) of same elevation with changeover portion bottom plate and concave up curved sections (5) is connected and formed, it is characterised in that chooses bank The delivery port of segment trailer is by choosing bank section both sides or afterbody abutment wall the drop back side delivery port (9 or/and 13) formed, inclined cutout in side goes out The mouth of a river (10) and outlet water at tail end mouth (11 or 12) combine.
- 2. afterbody abutment wall recession formula defrlector bucket according to claim 1, it is characterised in that the outlet water at tail end mouth is straight line Shape delivery port (11), its width (B2) are less than or equal to the 1/3 of changeover portion baseplate width (B1).
- 3. afterbody abutment wall recession formula defrlector bucket according to claim 1, it is characterised in that the outlet water at tail end mouth is camber line Shape delivery port (12), its Breadth Maximum (B3) are less than or equal to the 1/3 of changeover portion baseplate width (B1).
- The formula defrlector bucket 4. the afterbody abutment wall according to any claim in claims 1 to 3 is dropped back, it is characterised in that choose bank The length (L2 or/and L4) of section one or both sides afterbody abutment wall recession is less than or equal to the 1/2 of changeover portion baseplate width (B1).
- The formula defrlector bucket 5. the afterbody abutment wall according to any claim in claims 1 to 3 is dropped back, it is characterised in that beveling The angle (α) of formula delivery port (10) and changeover portion abutment wall is 10~60 °.
- 6. afterbody abutment wall recession formula defrlector bucket according to claim 4, it is characterised in that inclined cutout delivery port (10) and mistake The angle (α) for crossing section abutment wall is 10~60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710680740.8A CN107513985B (en) | 2017-08-10 | 2017-08-10 | A kind of tail portion abutment wall recession formula defrlector bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710680740.8A CN107513985B (en) | 2017-08-10 | 2017-08-10 | A kind of tail portion abutment wall recession formula defrlector bucket |
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| Publication Number | Publication Date |
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| CN107513985A true CN107513985A (en) | 2017-12-26 |
| CN107513985B CN107513985B (en) | 2019-08-20 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706899A (en) * | 2018-11-21 | 2019-05-03 | 中国电建集团成都勘测设计研究院有限公司 | Chamfer skew bucket structure |
| CN109750640A (en) * | 2019-01-15 | 2019-05-14 | 中国电建集团北京勘测设计研究院有限公司 | Narrow river valley bank discharge structure energy dissipation below spillway structure |
| CN110578322A (en) * | 2019-10-14 | 2019-12-17 | 中国电建集团中南勘测设计研究院有限公司 | River valley trajectory bucket |
| CN110593221A (en) * | 2019-09-05 | 2019-12-20 | 中国电建集团北京勘测设计研究院有限公司 | Fold-line type flip bucket at outlet of bank spillway/flood discharge tunnel |
| CN110747830A (en) * | 2019-10-22 | 2020-02-04 | 四川大学 | Reverse tongue-shaped flip bucket |
| CN111691377A (en) * | 2020-06-23 | 2020-09-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Curved surface corner-fitting narrow slit flip bucket |
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| CN101736718A (en) * | 2009-12-17 | 2010-06-16 | 四川大学 | Reversely bevelled flip bucket |
| CN101864754A (en) * | 2010-06-11 | 2010-10-20 | 四川大学 | Inclined flip bucket for spillway or flood discharge hole outlet |
| CN203741791U (en) * | 2013-12-20 | 2014-07-30 | 中国水电顾问集团贵阳勘测设计研究院有限公司 | Flood discharge, energy dissipation and erosion control facility structure |
| CN106498909A (en) * | 2016-10-08 | 2017-03-15 | 四川大学 | For spillway on bank or the defrlector bucket of flood discharge hole outlet |
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| RU2265105C1 (en) * | 2004-08-02 | 2005-11-27 | Государственное образовательное учреждение высшего профессионального образования Саратовский государственный технический университет (СГТУ) | Erosion protective device |
| CN101736718A (en) * | 2009-12-17 | 2010-06-16 | 四川大学 | Reversely bevelled flip bucket |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706899A (en) * | 2018-11-21 | 2019-05-03 | 中国电建集团成都勘测设计研究院有限公司 | Chamfer skew bucket structure |
| CN109750640A (en) * | 2019-01-15 | 2019-05-14 | 中国电建集团北京勘测设计研究院有限公司 | Narrow river valley bank discharge structure energy dissipation below spillway structure |
| CN110593221A (en) * | 2019-09-05 | 2019-12-20 | 中国电建集团北京勘测设计研究院有限公司 | Fold-line type flip bucket at outlet of bank spillway/flood discharge tunnel |
| CN110578322A (en) * | 2019-10-14 | 2019-12-17 | 中国电建集团中南勘测设计研究院有限公司 | River valley trajectory bucket |
| CN110747830A (en) * | 2019-10-22 | 2020-02-04 | 四川大学 | Reverse tongue-shaped flip bucket |
| CN111691377A (en) * | 2020-06-23 | 2020-09-22 | 中国电建集团贵阳勘测设计研究院有限公司 | Curved surface corner-fitting narrow slit flip bucket |
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| CN107513985B (en) | 2019-08-20 |
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