CN207959146U - A kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator - Google Patents
A kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator Download PDFInfo
- Publication number
- CN207959146U CN207959146U CN201820178482.3U CN201820178482U CN207959146U CN 207959146 U CN207959146 U CN 207959146U CN 201820178482 U CN201820178482 U CN 201820178482U CN 207959146 U CN207959146 U CN 207959146U
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- CN
- China
- Prior art keywords
- conservancy diversion
- water conservancy
- paste block
- arch dam
- spillway
- 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.)
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Abstract
The utility model discloses a kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipators, it includes multiple-layer horizontal track, the horizontal rail is laid on the exterior wall of every layer of residential building, all horizontal rails all simultaneously with vertical rail vertical butt joint, the vertical rail is vertically fixedly mounted on residential building exterior wall, being slidably installed on the vertical rail has lifting gear, multiple delivery cars are carried on the lifting gear, the inside of the delivery car is equipped with the delivery mechanism for rising cargo.The outer surface of the plant construction and residential building reaches every household convenient for cargo straight line, and concentrates delivery to the resident of each household, each floor, saves time and resource to the greatest extent, greatly improves the delivery efficiency of express delivery, ensure that service quality.
Description
Technical field
The utility model is related to the arch dam sluicing energy dissipating optimisation technique field of hydraulic and hydroelectric engineering more particularly to the excessive floods of arch dam
Road pier stern construction optimizes energy dissipating.
Background technology
As China's hydroelectric development technology reaches its maturity, exploitation dynamics gradually increases, and is built in recent years in valley river
A collection of hundred meter level arch dams.Its Energy dissipation of flood discharging generally mostly uses overfall dam, spillway, multilayer flood discharge, flood-discharge tunnel etc. and carries out flood discharge,
In but, the operation of metal structure equipments of the buildings such as bottom outlet construction investment can be made to increase, and the arrangement form of mesoporous can influence dam and apply
Work progress.Therefore the dam body table hole hole flip trajectory bucket form for mostly using characteristics of compact layout greatly causes to encircle due to choosing bank unreasonable structure
Dam spillway pier tail deflecting nappe is because superposition merges into concentrated flow to centripetence and flip shot is insufficient entering near water, it is difficult to reach
To the desired effect of colliding energy dissipation, while deflecting nappe is crossed near water entering, and synthesizes one compared with concentrated flow, punching hole it is deep and
Suddenly, serious to riverbed foundation failure.There are also discharge structures to be limited in arrangement by underwater bed landform, and flip shot is caused
Downstream riverbank is directly impacted in the side or both sides of flow, washes away bank slope, massif is caused to collapse, totally unfavorable to dam stabilization,
Energy dissipating can seriously affect the safety of main structures when runtime flood discharge simultaneously, easily lead to bank slope and collapse and unstability and jeopardize hinge and build
Build object stabilization.
Utility model content
The purpose of this utility model is to provide a kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator, which solves
The superposition of spillway deflecting nappe concentrate or flip shot it is insufficient caused by colliding energy dissipation effect is undesirable and deflecting nappe place of entry
Close to riverbank, the problems such as impacting bank slope, destroy main structures.
In order to realize above-mentioned technical characteristic, what the purpose of this utility model was realized in：A kind of arch dam spillway pier
Tail water conservancy diversion paste block energy dissipator, it includes first side wall, the first partition wall, the second partition wall and the second side for constituting big vast channel of overflowing
Wall, the first side wall are equipped with the first water conservancy diversion paste block on the side wall of its bottom position, and the second side abutment wall is close
Second water conservancy diversion paste block is installed on the side wall of its bottom position, the bottom of the first water conservancy diversion paste block and the second water conservancy diversion paste block with overflow
The arc of the bottoms Hong Dao chooses bank and fits.
The first water conservancy diversion paste block and the second water conservancy diversion paste block use identical structure, and the section of the first water conservancy diversion paste block is adopted
With trapezoid cross section, the long bottom edge of the trapezoid cross section and the side wall of first side wall fit, the bottom of the first water conservancy diversion paste block
Portion is machined with base arcuate edge, and the end of the base arcuate edge is machined with bevel edge, and the edge that the bevel edge chooses bank with arc fits.
The base arcuate edge chooses bank with arc and fits.
The height of the first water conservancy diversion paste block and the second water conservancy diversion paste block is higher than the peak level that spillway interior energy occurs.
The upstream end of the first water conservancy diversion paste block and the second water conservancy diversion paste block is located at the intersection point of spillway straightway and ogee section
Place.
The utility model has the advantages that：
1. this water conservancy diversion paste block arrangement is flexible and changeable, water conservancy diversion paste block can not only be arranged in arch dam spillway side or
Person both sides, and can take and be arranged symmetrically or unsymmetrical arrangement mode.
2. it is applied widely, can flexibly it change by adjusting the angle of release size of water conservancy diversion paste block in the horizontal direction
Deflecting nappe is oriented to, and control overflow enters water position, improves colliding energy dissipation effect, suitable for being let out using the various of flip trajectory bucket mode
Water buildings.
3. simple structure, easy for construction and construction technical requirement are relatively low, general construction technical staff can be grasped.
4. convenient material drawing, material prescription are simple, quantities is relatively small, and cost is relatively low, and construction investment is few, the engineering of acquisition
Income is big.
5. construction material be reinforced concrete, reliable in quality, durability is good, and service life is long, maintenance technology difficulty it is small and
It is easily repaired after being damaged, does not influence Flood Design Discharge for Spillway.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the utility model in arch dam spillway pier tail mounting structure front view.
Fig. 2 is partial enlarged view at A in the utility model Fig. 1.
Fig. 3 is the utility model in arch dam spillway pier tail mounting structure vertical view.
Fig. 4 is the utility model in arch dam spillway pier tail mounting structure left view.
Fig. 5 is the utility model the first water conservancy diversion paste block front view.
Fig. 6 is the utility model the first water conservancy diversion paste block vertical view.
Fig. 7 is the utility model the first water conservancy diversion paste block right view.
In figure：First side wall 1, overflow ducts 2, the first partition wall 3, the second partition wall 4 and the second side abutment wall 5, the first water conservancy diversion
Paste block 6, the second water conservancy diversion paste block 7, arc choose bank 8；
Trapezoid cross section 601, bevel edge 602, base arcuate edge 603.
Specific implementation mode
The embodiment of the utility model is described further below in conjunction with the accompanying drawings.
As shown in figs. 1-7, a kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator, it includes constitute big vast channel of overflowing the
Side abutment wall 1, the first partition wall 3, the second partition wall 4 and the second side abutment wall 5, the first side wall 1 is close to the side of its bottom position
First water conservancy diversion paste block 6 is installed, the second side abutment wall 5 is equipped with the second water conservancy diversion patch on the side wall of its bottom position on wall
Block 7, the first water conservancy diversion paste block 6 and the bottom of the second water conservancy diversion paste block 7 and the arc of spillway bottom choose bank 8 and fit.Pass through
Using above-mentioned water conservancy diversion paste block energy dissipator, it is oriented to by changing deflecting nappe positioned at the water conservancy diversion paste block of arch dam spillway pier tail,
Divergent state is laterally retained after making overflow flip shot, control overflow place of entry makes deflecting nappe in sky in river central area
In fully cross liquidate, sharp impacts, be oriented to achieve the purpose that improve deflecting nappe and improve energy dissipating efficiency.Solve spillway
Deflecting nappe because centripetence enter folded near water merge into concentrated flow or insufficient flip shot caused by colliding energy dissipation effect not
Ideal and deflecting nappe place of entry impacts bank slope close to riverbank, jeopardizes the engineering technology problems such as main structures safety.
Further, the first water conservancy diversion paste block 6 and the second water conservancy diversion paste block 7 use identical structure, first water conservancy diversion
The section of paste block 6 uses trapezoid cross section 601, the long bottom edge of the trapezoid cross section 601 and the side wall of first side wall 1 to fit,
The bottom of the first water conservancy diversion paste block 6 is machined with base arcuate edge 603, and the end of the base arcuate edge 603 is machined with bevel edge 602,
The edge that the bevel edge 602 chooses bank 8 with arc fits.
Further, the base arcuate edge 603 chooses bank 8 with arc and fits.And then it ensure that the first water conservancy diversion paste block 6 and the
Two water conservancy diversion paste blocks 7 and arc coordinate well between choosing bank 8.
Further, the height of the first water conservancy diversion paste block 6 and the second water conservancy diversion paste block 7 occurs most higher than spillway interior energy
High water level.Specifically, the paste block height is the highest water surface curve that can occur in spillway and the sum of increases safely.
Further, the upstream end of the first water conservancy diversion paste block 6 and the second water conservancy diversion paste block 7 be located at spillway straightway with it is anti-
The point of intersection of segmental arc.
Simultaneously attached drawing is described in detail to the utility model optimization energy-dissipating tech with reference to certain medium hydropower station case history.
Certain is completed medium hydropower station engineering, the minimum river valley area height above sea level 398m of dam site riverbed height above sea level 660m.Valley contour
For typical deep " V " type valley, main stem average gradient 2.86%, the ratio of width to height 1：1.27.Two sides are jagged cliff, the gradient
Between 60 ° ~ 80 °, fault plane is more straight.Downflow weir flood discharge, gate control mode, when Flood Design Discharge for Spillway, deflecting nappe diverging,
The effect that liquidates is undesirable, and overflow forms one compared with concentrated flow entering near water intersection, and punching hole is deep and steep, and riverbed foundation failure is tight
Weight, and deflecting nappe place of entry is close to riverbank, it is serious that high-velocity flow washes away bank slope, is not added with regulation, develops as one pleases, high-velocity flow
Scour bank slope can cause bank slope to collapse, and jeopardize main structures safety and stability.
According to engineering there are the problem of, now do following design, an angular dimension added in spillway right hole avris pier tail
For 5 ° of water conservancy diversion paste block, water conservancy diversion paste block upstream end is located at the point of intersection of spillway straightway and ogee section, under water conservancy diversion paste block bottom
It holds and chooses bank pier tail and flush, water conservancy diversion paste block bottom is located at the horizontal width of anti-arc Dun Weichu and the horizontal width phase for choosing bank pier tail
Together, water conservancy diversion paste block upstream side height is 11531mm, and it is 932mm, water conservancy diversion patch that water conservancy diversion paste block downstream side height, which is 15280mm, width,
It is 932mm that block top length, which is 10650mm, width,.
Hydraulic model test shows that after water conservancy diversion paste block is arranged, deflecting nappe is in laterally divergent state, and the effect that liquidates is bright
Aobvious, cross position raising, and deflecting nappe place of entry occupy river immediate vicinity region.And further experimental observation number is summarized in research
According to：When chance check operating mode letdown flow is 1203 m3/s within 10 years one, scour hole depth less sets water conservancy diversion paste block and reduces 6.4 meters；20
Year one when meeting that check operating mode letdown flow be 1448m3/s, and scour hole depth less sets water conservancy diversion paste block and reduces 5.1 meters；Fifty year return period
When design conditions letdown flow is 1960m3/s, scour hole depth less sets water conservancy diversion paste block and reduces 2.98 meters, and scour hole depth drops significantly
Low, the design of water conservancy diversion paste block significantly improves colliding energy dissipation efficiency.Deflecting nappe occupy river center entering water under each operating mode
Do not impact bank slope.Further from dam bottom when punching hole deepest point less sets water conservancy diversion paste block.
By using above-mentioned technical proposal disclosed by the utility model, following beneficial effect has been obtained：
By rationally designing the size and position of spillway pier tail water conservancy diversion paste block, change flip shot water using water conservancy diversion paste block
Tongue is oriented to, make deflecting nappe intersect in the air liquidate, abundant aeration, mutual extrusion and collision, controlling the collecting and distributing degree of overflow simultaneously makes water
Tongue place of entry improves colliding energy dissipation efficiency in river approximate centerline region, avoids and overflow top is concentrated to rush riverbank, effectively
Reduce scour hole depth and solve the side of deflecting nappe or downstream bank slope directly impact in both sides, massif is caused to collapse, danger
And main structures security problems, thus greatly reduce the requirement of shelter to bank slope and riverbed basis.The utility model fills
Divide and spillway water conservancy diversion paste block change deflecting nappe guiding is utilized, improves efficiency efficiency.Optimize the energy dissipating knot of discharge structure
Structure and bank slope protection measure is simplified, alleviates influence and destruction to hinge region shore slope, reduce quantities and construction investment,
Good Social benefit and economic benefit is obtained, there is extensive practical value and dissemination.
Above-described embodiment is used for illustrating the utility model, rather than limits the utility model, in this practicality
In novel spirit and scope of the claims, to any modifications and changes that the utility model is made, this reality is both fallen within
With novel protection domain.
Claims (5)
1. a kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator, it is characterised in that：It includes constitute excessive big vast channel first
Side wall（1）, the first partition wall（3）, the second partition wall（4）With the second side abutment wall（5）, the first side wall（1）Close to its bottom
First water conservancy diversion paste block is installed on the side wall of position（6）, the second side abutment wall（5）It is installed on the side wall of its bottom position
There is the second water conservancy diversion paste block（7）, the first water conservancy diversion paste block（6）With the second water conservancy diversion paste block（7）Bottom and spillway bottom arc
Shape chooses bank（8）It fits.
2. a kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator according to claim 1, it is characterised in that：Described
One water conservancy diversion paste block（6）With the second water conservancy diversion paste block（7）Using identical structure, the first water conservancy diversion paste block（6）Section using ladder
Tee section（601）, the trapezoid cross section（601）Long bottom edge and first side wall（1）Side wall fit, first water conservancy diversion
Paste block（6）Bottom be machined with base arcuate edge（603）, the base arcuate edge（603）End be machined with bevel edge（602）, described
Bevel edge（602）Bank is chosen with arc（8）Edge fit.
3. a kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator according to claim 2, it is characterised in that：The arc
Shape bottom edge（603）Bank is chosen with arc（8）It fits.
4. a kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator according to claim 1, it is characterised in that：Described
One water conservancy diversion paste block（6）With the second water conservancy diversion paste block（7）Height be higher than spillway interior energy occur peak level.
5. a kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator according to claim 1, it is characterised in that：Described
One water conservancy diversion paste block（6）With the second water conservancy diversion paste block（7）Upstream end be located at the point of intersection of spillway straightway and ogee section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820178482.3U CN207959146U (en) | 2018-02-01 | 2018-02-01 | A kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820178482.3U CN207959146U (en) | 2018-02-01 | 2018-02-01 | A kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207959146U true CN207959146U (en) | 2018-10-12 |
Family
ID=63736550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820178482.3U Expired - Fee Related CN207959146U (en) | 2018-02-01 | 2018-02-01 | A kind of arch dam spillway pier tail water conservancy diversion paste block energy dissipator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207959146U (en) |
-
2018
- 2018-02-01 CN CN201820178482.3U patent/CN207959146U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20200201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |