CN206625200U - A kind of training wall for improving Solution of Flow in Curved Channel fluidised form - Google Patents
A kind of training wall for improving Solution of Flow in Curved Channel fluidised form Download PDFInfo
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- CN206625200U CN206625200U CN201720218972.7U CN201720218972U CN206625200U CN 206625200 U CN206625200 U CN 206625200U CN 201720218972 U CN201720218972 U CN 201720218972U CN 206625200 U CN206625200 U CN 206625200U
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Abstract
It the utility model is related to a kind of training wall for improving Solution of Flow in Curved Channel fluidised form.The training wall that purpose is to provide should be able to reasonable distribution Solution of Flow in Curved Channel, effectively control bend concave bank water level superelevation, to reduce influence of the unfavorable reflexion and scour flow to downstream dissipator of energy erosion control.Technical scheme is：A kind of training wall for improving Solution of Flow in Curved Channel fluidised form, the training wall is included along water (flow) direction by low elevated upstream ramp section, contour middle reaches changeover portion and the downstream ramp section reduced by height, and nestles up the bend position that concave bank side is arranged on floodway.The upstream ramp section, starts from bend upstream and in smoothing junction with bend bottom plate, and end is located at bend entrance and contour and in smoothing junction with middle reaches transition；Upstream ramp section top width is the 1/4~1/2 of floodway width, and upstream ramp section terminal end width is the 1/2 of floodway width；Upstream ramp segment length is the 1/2~1 of floodway width.
Description
Technical field
The utility model belongs to hydraulic engineering technical field, and in particular to the dissipation and scouring facility in a kind of hydraulic engineering,
Especially improve the training wall of Solution of Flow in Curved Channel fluidised form.
Background technology
In hydraulic engineering, due to the limitation of topographic and geologic condition, big gradient high flow rate bend is widely used in spillway
Engineering, draw with the engineerings such as Hydraulic Projects.The bending of design lets out groove and unfavorable reflexion and scour flow often be present：Flow distribution is uneven,
Fluidised form is unfavorable, and energy is concentrated, and current produce shock wave in the presence of centrifugal intertia force, and the water surface stops up height along barricade, under being unfavorable for
The dissipation and scouring of trip.Reflexion and scour flow causes Solution of Flow in Curved Channel transverse distribution seriously uneven, so as to cause flow-shape poor, current collection
In in concave bank side, and can constantly be climbed along concave bank abutment wall with the increase of flow, until crossing at the top of abutment wall, to waterwork
Thing inherently safe and surrounding enviroment and resident's life can cause certain potential safety hazard safely.
At present, the research to Solution of Flow in Curved Channel is concern limitation superelevation mostly, and for structure safety and operational effect research
Not enough.Such as stream deflector method, by adjusting the angle of stream deflector and incoming, stream deflector is disturbed current greatly, and stream deflector is easy behind
Occur without pool, and aeration is serious, easily produces cavitation erosion, the range of flow that stream deflector method adapts to is smaller, and flow is compared with flood
When deep larger, the water conservancy diversion effect of stream deflector is poor.And for example transverse gradient method, transverse gradient method are relatively adapted to low flow rate condition, current stream
State makes moderate progress, bad to great deal running water Adjustment effect.If continuing to increase transverse gradient, not only quantities can substantially increase,
The aesthetic measure of engineering also has considerable influence.
Utility model content
The purpose of this utility model is overcome the shortcomings of in above-mentioned background technology, there is provided a kind of improvement Solution of Flow in Curved Channel fluidised form
Training wall；The training wall should be able to reasonable distribution Solution of Flow in Curved Channel, effectively control bend concave bank water level superelevation, unfavorable water repulsed or subdue the enemy to reduce
Flow the influence to downstream dissipator of energy erosion control.
Technical scheme provided by the utility model is：A kind of training wall for improving Solution of Flow in Curved Channel fluidised form, the training wall include
Along water (flow) direction by low elevated upstream ramp section, contour middle reaches changeover portion and the downstream ramp section reduced by height, and
And nestle up the bend position that concave bank side is arranged on floodway.
The upstream ramp section, starts from bend upstream and in smoothing junction with bend bottom plate, end be located at bend entrance and with
Middle reaches transition is contour and in smoothing junction；Upstream ramp section top width is the 1/4~1/2 of floodway width, and upstream ramp section is last
Hold 1/2 that width is floodway width；Upstream ramp segment length is the 1/2~1 of floodway width.
The middle reaches changeover portion cross section is consistent, and is right-angled trapezium；Middle reaches changeover portion height and training wall dash
Side is highly contour, and middle reaches transition width is the 1/2 of floodway width.
The downstream ramp section starts from bend outlet, and downstream ramp section top is contour and in smoothing junction with middle reaches changeover portion,
Downstream ramp section end is located at bend downstream and in smoothing junction with bend bottom plate；Downstream ramp section terminal end width is floodway width
1/2；Training wall downstream ramp segment length is the 1/2~1 of floodway width.
Preferably, upstream ramp section top width is the 1/3 of floodway width.
Operation principle of the present utility model is：When the stream that sluiced under outlet structure escape works passes through the training wall, in training wall
Under dash water guiding action, current training wall top formed high water level current, floodway convex bank side formed low water level current, two
Stock current form distribution current in upstream ramp section, are adjusted in bend section, then converge by downstream ramp section under entrance
Swim river course.Flow direction and fluidised form can be effectively thus adjusted, and reduces unfavorable reflexion and scour flow, is advantageous to disappearing for downstream river course
Can erosion control.
The beneficial effects of the utility model are：Because the utility model arranges training wall on the bottom plate of floodway bend,
Bend bottom plate is divided into 2 areas (being high water level and low water level area respectively) by training wall, is advantageous to adjust flow-shape；Lead simultaneously
The upstream ramp section section and downstream ramp section for flowing wall are separately designed, and upstream ramp section is smoothly connected using slope with floodway bottom plate
Connect, current are smoothly transitioned at the top of training wall；Downstream ramp section is in smoothing junction with floodway bottom plate using slope, current smooth-going
Converge, in order to the dissipation and scouring of downstream river course.Thus training wall can play one's part to the full, and reasonable distribution current, limit simultaneously
The superelevation of Solution of Flow in Curved Channel concave bank water level, it is effectively improved release floodwatering flow fluidised form and extends the service life of hydraulic structure, reach anti-
The purpose of calamity mitigation.
Brief description of the drawings
Fig. 1 is that training wall described in the utility model arranges schematic diagram (top view) in the orientation at bend position.
Fig. 2 is the longitudinal section of the upstream ramp section of training wall described in the utility model, middle reaches changeover portion and downstream ramp section
Deployed configuration schematic diagram.
Fig. 3 is the cross-sectional structure schematic diagram of the middle reaches changeover portion of training wall described in the utility model.
In figure：1 is bend concave bank, and 2 be bend convex bank, and B is floodway width, and B1 is upstream ramp section top width, B2
For downstream ramp section terminal end width, S1 is upstream ramp segment length, and S2 is middle reaches transition section length, and S3 is downstream ramp segment length
Degree；R is bend concave bank radius, and H is training wall dash side height.
Embodiment
The utility model is further described below in conjunction with embodiment shown in the drawings；The present embodiment is served only for pair
The utility model is further detailed, but it is not intended that limitation to scope of protection of the utility model, the skill of this area
Art personnel can make the scope that some nonessential modifications and adaptations belong to the utility model protection according to the above.
Embodiment shown in the drawings is arranged on floodway to improve the training wall of certain engineering floodway Solution of Flow in Curved Channel fluidised form
On the bottom plate of whole bend and nestle up concave bank side 1 and arrange that (side of training wall width is connected with bend concave bank side, another
Side extends to floodway medium position), so as to form the low water level area 4 beside the high water level 3 and training wall at training wall position；
The training wall includes reducing under liter along water (flow) direction by low elevated upstream ramp section, contour middle reaches changeover portion and by height
Swim slope section.Upstream ramp section, bend upstream and in smoothing junction with bottom plate is started from, end is located at bend entrance, with middle reaches transition
Contour section of smooth connection；Middle reaches changeover portion cross section is right-angled trapezium, and downstream ramp section starts from bend outlet, and top is swum across with
It is contour and in smoothing junction to cross section, end is located at bend downstream, in smoothing junction with bend bottom plate.
Bend design width B is 10m, and bend is torrent, and the corner of bend is 32 °, and bend concave bank radius is 20m.Lead
Stream wall upstream ramp section top width B1 is 1/3 floodway width, as 3.3m.Training wall downstream ramp section terminal end width B2 is
1/2 floodway width, i.e. 5m.Upstream ramp segment length S1 is 8m, and changeover portion a length of S2 in middle reaches is 20m, downstream ramp segment length
S3 is 8m.Training wall dash side height H is 0.75m.
Through hydraulic model test, the training wall can improve Solution of Flow in Curved Channel fluidised form well, into bend current by again
Distribution, the flow intensity of impact concave bank barricade is obviously reduced, thus repulses or subdue the enemy phenomenon and substantially weaken, and the show-through area of bend bottom plate is notable
Reduce.Bend concave bank water level superelevation is advantageously reduced simultaneously, in the case where designing and checking operating mode, the more former design of bend concave bank water level subtracts
It is respectively 1.4m and 1.1m by a small margin.
Claims (5)
1. a kind of training wall for improving Solution of Flow in Curved Channel fluidised form, it is characterised in that the training wall is included along water (flow) direction by low rise
Upstream ramp section, contour middle reaches changeover portion and by height reduce downstream ramp section, and nestle up concave bank side (1) setting
At the bend position of floodway.
2. the training wall according to claim 1 for improving Solution of Flow in Curved Channel fluidised form, it is characterised in that：The upstream ramp section,
Bend upstream and in smoothing junction with bend bottom plate is started from, end is located at bend entrance, contour and in smoothing junction with middle reaches transition；On
1/4~1/2 that slope section top width (B1) is floodway width (B) is swum, upstream ramp section terminal end width is floodway width
1/2；Upstream ramp segment length (S1) is the 1/2~1 of floodway width.
3. the training wall according to claim 1 for improving Solution of Flow in Curved Channel fluidised form, it is characterised in that：The middle reaches changeover portion is horizontal
Section is consistent, and is right-angled trapezium；Middle reaches changeover portion height and training wall dash side height (H) are contour, middle reaches changeover portion
Width is the 1/2 of floodway width.
4. the training wall according to claim 1 for improving Solution of Flow in Curved Channel fluidised form, it is characterised in that：The downstream ramp section begins
Exported in bend, downstream ramp section top is contour and in smoothing junction with middle reaches changeover portion, and downstream ramp section end is located under bend
Trip, it is in smoothing junction with bend bottom plate；Downstream ramp section terminal end width (B2) is the 1/2 of floodway width；Downstream ramp segment length
(S3) it is the 1/2~1 of floodway width.
5. the training wall of the improvement Solution of Flow in Curved Channel fluidised form according to Claims 2 or 3 or 4, it is characterised in that：Upstream ramp section
Top width is the 1/3 of floodway width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218972.7U CN206625200U (en) | 2017-03-08 | 2017-03-08 | A kind of training wall for improving Solution of Flow in Curved Channel fluidised form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218972.7U CN206625200U (en) | 2017-03-08 | 2017-03-08 | A kind of training wall for improving Solution of Flow in Curved Channel fluidised form |
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| Publication Number | Publication Date |
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| CN206625200U true CN206625200U (en) | 2017-11-10 |
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| CN201720218972.7U Active CN206625200U (en) | 2017-03-08 | 2017-03-08 | A kind of training wall for improving Solution of Flow in Curved Channel fluidised form |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098154A (en) * | 2018-09-07 | 2018-12-28 | 新疆农业大学 | A kind of wedged bottom sill method for arranging and the guiding device of foundation |
| CN110777882A (en) * | 2019-11-16 | 2020-02-11 | 华北水利水电大学 | Diversion device for flood discharge opening downstream diversion irrigation |
| CN111172936A (en) * | 2020-01-14 | 2020-05-19 | 交通运输部天津水运工程科学研究所 | Diversion fence structure suitable for downstream curve of approach channel and construction method thereof |
| CN111877255A (en) * | 2020-06-23 | 2020-11-03 | 顾斌 | Erosion prevention protection device for river channel corners |
| CN111997160A (en) * | 2020-08-21 | 2020-11-27 | 四川大学 | Rectangular pipeline bottom plate water conservancy diversion structure of quarter turn |
-
2017
- 2017-03-08 CN CN201720218972.7U patent/CN206625200U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098154A (en) * | 2018-09-07 | 2018-12-28 | 新疆农业大学 | A kind of wedged bottom sill method for arranging and the guiding device of foundation |
| CN110777882A (en) * | 2019-11-16 | 2020-02-11 | 华北水利水电大学 | Diversion device for flood discharge opening downstream diversion irrigation |
| CN111172936A (en) * | 2020-01-14 | 2020-05-19 | 交通运输部天津水运工程科学研究所 | Diversion fence structure suitable for downstream curve of approach channel and construction method thereof |
| CN111877255A (en) * | 2020-06-23 | 2020-11-03 | 顾斌 | Erosion prevention protection device for river channel corners |
| CN111877255B (en) * | 2020-06-23 | 2022-05-06 | 青岛水建集团有限公司 | Erosion prevention protection device for river channel corners |
| CN111997160A (en) * | 2020-08-21 | 2020-11-27 | 四川大学 | Rectangular pipeline bottom plate water conservancy diversion structure of quarter turn |
| CN111997160B (en) * | 2020-08-21 | 2021-04-27 | 四川大学 | Rectangular pipeline bottom plate water conservancy diversion structure of quarter turn |
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