CN208251036U - Strength for cushion pool is backflowed two dam of pier and cushion pool - Google Patents
Strength for cushion pool is backflowed two dam of pier and cushion pool Download PDFInfo
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- CN208251036U CN208251036U CN201820793018.5U CN201820793018U CN208251036U CN 208251036 U CN208251036 U CN 208251036U CN 201820793018 U CN201820793018 U CN 201820793018U CN 208251036 U CN208251036 U CN 208251036U
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Abstract
It backflows two dam of pier and cushion pool the utility model discloses a kind of strength for cushion pool, belongs to hydraulic structure technical field, a kind of a kind of two dams for cushion pool that plunge pool effect can be improved and the cushion pool thus formed are provided.A kind of strength for cushion pool is backflowed two dam of pier, the downstream of cushion pool is arranged in two dam of pier that wherein strongly backflows, it is upstream side strongly backflowing on two dam of pier towards the side of cushion pool, the upstream side is the arc-shaped curved surface shape in indent from the bottom end on two dam of pier that strongly backflows to two dam crest end of pier of strongly backflowing；Water flow concave arc in the pier that strongly backflows can be made to roll to form second area energy dissipating Xuan Gun toward cushion pool upstream, water is turned back and water body generation secondary collision energy dissipating in the body of the pool after flowing to two dams, improve effect of energy dissipation in cushion pool, and then reduce cushion pool length, the variation of downstream landform is adapted to, the release floodwatering flow that reduces of maximum possible acts on the erosion damage of downstream river course.
Description
Technical field
It backflows pier two the utility model relates to hydraulic structure technical field more particularly to a kind of strength for cushion pool
Road dam and the cushion pool thus formed.
Background technique
The flood discharge of concrete dam mostly uses greatly flood relief through dam, and such flood discharge mode usually requires to be arranged in dam downstream
Energy-dissipating installation.Especially concrete arch dams, in dam downstream, setting cushion pool is most commonly seen as energy-dissipating installation.Cushion pool one
As surrounded by dam, two dams and two sides bank, bottom be plunge pool floor.Generally there is the water of several meters to tens meters depths in the pool
Water cushion and energy dissipating water body of the body as flood relief through dam water flow, water depth are then mainly determined by two height of dam degree.Work as release floodwatering flow
There is the area main energy dissipating Xuan Gun at an overflow drop point that the kinetic energy of release floodwatering flow is converted to shearing when pounding water body in the pool, in the pool to become
Shape can be to reach energy dissipating purpose, and remaining part kinetic energy can impact two dams and flow after along two dams and finally crossing two dams
Downstream river.
The two dam upstream sides that current each engineering generallys use are essentially all tapered plane pattern, under this configuration,
The water flow of the level water flow and two upstream side Dao Ba slopes of crossing two Ba Chu is oblique situation in the same direction, that is, two bursts of water flows
It can occur close to oblique collision effect in the same direction；And the effect of energy dissipation of angular impact is bad, therefore leads to current used upstream side
For the bad problem of the effect of energy dissipation of bis- dam structure of tapered plane Xing.In addition, existing cushion pool, water cushion depth is by two
Dam height of dam determines, and under normal conditions, height of dam height is substantially equal to the water cushion depth of cushion pool, therefore specific in design needs
In the case where water cushion depth, need to build the Er Daoba of respective heights, thus its cost is relatively high.
Utility model content
The technical issues of the utility model solves is to provide one kind and plunge pool effect can be improved, especially raising water cushion
A kind of strength for cushion pool of secondary collision effect of energy dissipation in the pool is backflowed two dam of pier.
The pier the technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of strength for cushion pool is backflowed
Two dams, the strength two dam of pier that backflows are arranged in the downstream of cushion pool, are strongly backflowing on two dam of pier towards cushion pool
Side be upstream side, the upstream side is from the bottom end on two dam of pier that strongly backflows to two dam crest end of pier of strongly backflowing
In the arc-shaped curved surface shape of indent.
Further, on any cross section for strongly backflowing two dam of pier, the arc-shaped curved upstream side
The corresponding arc curve be formed as in indent in face, the arc curve is in the bottom end for being located at two bottom end Dao Ba one end of pier of strongly backflowing
Tangent line plunge pool floor corresponding with the end is tangent.
Further, on any cross section for strongly backflowing two dam of pier, the upstream side of the arc-shaped curved surface shape
It is correspondingly formed the arc curve for indent, the arc curve is in the top tangent line for being located at two dam crest end one end of pier of strongly backflowing
Horizontal plane corresponding with the end.
Further, on any cross section for strongly backflowing two dam of pier, the upstream side of the arc-shaped curved surface shape
It is correspondingly formed the arc curve for indent, in hook-shaped, the arc curve backflows Dun Erdao being located at strength the arc curve
The top tangent line of dam crest end one end is tilted along towards upwardly direction to be biased to cushion pool.
Further, the arc curve is the partial trace of circular partial trace or ellipse.
Further, the arc curve is circular partial trace, the corresponding radius R of arc curve is less than strength
Backflow the height of dam H on two dam of pier.
Further, the dam crest on two dam of pier that strongly backflows has dam crest plane, strongly backflowing on two dam of pier
It is downstream side backwards to the side of cushion pool, dam crest plane and upstream side intersection is provided with circular arc chamfering, it is flat in dam crest
Face and downstream side intersection are provided with circular arc chamfering；The width L of the dam crest plane is 5m；The radius of the circular arc chamfering is
2m。
Further, the downstream side is the tapered plane being obliquely installed, the inclined-plane slope ratio of the tapered plane is 1 ﹕
0.7。
Further, the corresponding surface layer of upstream side is one layer of scour and abrasion resistant concrete layer, the wash-resistant and abrasion-resistant coagulation
The thickness of the layer is 50cm.
In addition, the utility model also provides a kind of cushion pool, the cushion pool by dam, abutment wall, strongly backflow Dun Erdao
Dam and plunge pool floor surround, and the strength backflows the setting of two dam of pier in dam downstream, the Dun Erdao wherein strength is backflowed
It is backflowed two dam of pier using a kind of strength for cushion pool described in the utility model on dam；The strength is backflowed two dam of pier
The axis of dam is vertical with the impact direction of the release floodwatering flow of dam.
The beneficial effects of the utility model are: the utility model is using upstream side in the strength of the arc-shaped curved surface shape of indent
Backflow two dam of pier, passes through the changeable corresponding water (flow) direction of two dam upstream side of pier of strongly backflowing of arc-shaped curved surface；Exist in this way
The area main energy dissipating Xuan Gun is initially formed at overflow drop point, then water flow is changed along two dam of pier that strongly backflows is flowed downstream into
Strong secondary collision energy dissipating further occurs with water body in the pool behind direction, effectively improves water body energy dissipating in cushion pool and imitates
Fruit.And by the shape that two dam upstream side of pier of strongly backflowing is arranged, water flow may make to backflow on two dam of pier along strength
It turns back after trip side flow and rolls towards upstream, and then second area energy dissipating Xuan Gun can be formed again, water flow to the pier that strongly backflows
It turns back behind two dams and strong secondary collision energy dissipating occurs with water body in the body of the pool, can more efficiently improve water in cushion pool
Body effect of energy dissipation；And due to effectively improving effect of energy dissipation, reduce the percussion to two dams, it can be further
Reduce cushion pool length, and more adapts to the variation of downstream landform.In addition, resistance to using the anti-impact of 50cm thickness on upstream side surface layer
Grinding concrete is to increase dam facing impact resilience.In addition, can also be further increased in the pool after the secondary collision effect for passing through above-mentioned water body
Water body blocks effect, and then so that water cushion depth increases in the pool can realize that water cushion height is apparently higher than in the pool by water body in the high pool of swelling
The case where two dam dam crest height；In this way, can be in the case where realizing identical water cushion depth, on described in the utility model
Trip side be indent arc-shaped curved surface strength backflow two dam of pier when dam body height can lower than traditional upstream side be oblique
The dam body height on two dams of plane can also reduce cushion pool length, and then can efficiently reduce construction investment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cushion pool described in the utility model；
Fig. 2 is the enlarged diagram of regional area A in Fig. 1, while being also the schematic cross-section on two dam of pier that strongly backflows；
Fig. 3 is that strength is backflowed signal of two dam upstream side of pier corresponding arc curve when being circular partial trace
Figure；
Fig. 4 be strength backflow the corresponding arc curve of two dam upstream side of pier be ellipse partial trace when signal
Figure；
In the figure, it is marked as strength is backflowed, two dam 1 of pier, upstream side 11, dam crest plane 12, downstream side 13, circular arc are fallen
Angle 14, the axis of dam 15, cushion pool 2, arc curve 3, bottom end tangent line 4, top tangent line 5, plunge pool floor 6, dam 7, abutment wall 8,
Water flow 96, second after release floodwatering flow 91, the first whirlpool boiling water stream 92, bottom water flow 93, ascending current 94, level water flow 95, collision
Whirlpool boiling water stream 97, horizontal plane 10.
Specific embodiment
The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
Shown in as shown in Figure 1 to Figure 4, a kind of strength for cushion pool described in the utility model is backflowed two dam of pier, institute
The downstream that cushion pool 2 is arranged in two dam 1 of pier that strongly backflows is stated, is strongly being backflowed on two dam 1 of pier towards the side of cushion pool 2
For upstream side 11, the upstream side 11 is from the bottom end on two dam 1 of pier that strongly backflows to two dam of pier, 1 top of strongly backflowing
In the arc-shaped curved surface shape of indent.
Wherein, by the way that the arc-shaped curved surface shape that the upstream side 11 on two dam 1 of pier that strongly backflows is above-mentioned indent is arranged,
When flood discharge, along two dams 1 upstream side 11 surface from bottom end to top, will make in cushion pool 2 by the first whirlpool boiling water stream
The bottom water flow 93 formed after 92 along upstream side 11 gradually change direction after formed ascending current 94, specifically can refer to attached drawing 1
Shown in arrow flow direction shown in.Ascending current 94 will occur strong with the level water flow 95 in two dam crest portion of pier of strongly backflowing
Secondary collision, formed collision after water flow 96.The arc-shaped curved surface shape that upstream side 11 is indent is set, and the purpose is to make along water
The bottom water flow 93 of pad 2 bottom of the pool will gradually change water flow from bottom end to top with upstream side 11 when flowing to upstream side 11
Ascending current 94 is formed behind direction, and finally after the outflow of the top edge of upstream side 11 with flow through strength and backflow two dam of pier
The level water flow 95 at top can form the angular impact in the same direction, normal impact or opposite angular impact close to Relative vertical；Wherein, institute
Meaning refers to that the flow direction of ascending current 94 and level water flow 95 is in subvertical state, such as this patent close to Relative vertical
In both think that the angle of flow direction is above-mentioned subvertical state in the range of 80 ° to 100 °.After above-mentioned collision
It can effectively improve to water body in the secondary collision effect of energy dissipation of two Ba Chu of pier that strongly backflows；Meanwhile bottom ascending current 94
Part water flow can return in the pool after colliding with level water flow 95, form reflux in pier upstream of strongly backflowing and liquidate area, both form the
Two whirlpool boiling water streams 97 are liquidated by second rolling by again will be by force to the effect of energy dissipation of water body.In addition, being made by above-mentioned collision
Block effect with the rear water body that can also further increase in the pool, so can water body in the high pool of swelling it is real so that water cushion depth increases in the pool
Water cushion height is apparently higher than the case where strongly backflowing two dam of pier, 1 dam crest height in the existing pool；In this way, can realize that identical water cushion is deep
In the case where degree, upstream side 11 described in the utility model is used to backflow two dam 1 of pier for the strength of the arc-shaped curved surface of indent
When dam body height and then can efficiently reduce work lower than the dam body height on two dams that traditional upstream side is tapered plane
Journey investment.
More specifically, it is circular partial trace or ellipse that the arc curve 3 is preferably arranged in the utility model
Circular partial trace；Wherein arc curve 3 can refer to shown in attached drawing 2, refer to appointing on two dam 1 of pier that strongly backflows
On one cross section, the arc-shaped curved upstream side 11 is correspondingly formed as in the arc curve 3 of indent.Wherein attached drawing 3
Shown in, arc curve 3 is about circular a quarter curve, and a quarter of about ellipse shown in attached drawing 4 is bent
Line.In addition, it is corresponding that its arc curve 3 is further arranged when arc curve 3 is circular partial trace, in the utility model
Height of dam H of the radius R less than two dams 1；The purpose being arranged in this way is in order to enable finally from 3 top one end of arc curve to extension
The top tangent line 5 stretched is tilted along towards upwardly direction to be biased to cushion pool 2；It is final to realize ascending current 94 and level water flow 95
Opposite direction collisions；It is more advantageous to form the second whirlpool boiling water stream 97, to further strengthen the energy dissipating that second of water body rolls to water body
Effect.
More specifically, in order to enable strength is backflowed, the bottom end of the upstream side 11 on two dam 1 of pier and plunge pool floor 6 are realized
It is smoothly connected, to lower the barrier effect to water flow, the utility model is further using following setting: setting arc curve 3 exists
The plunge pool floor 6 corresponding with the end of bottom end tangent line 4 positioned at two dams, 1 bottom end one end is tangent.
More specifically, upstream side 11 is preferably arranged using following in the utility model: setting arc curve 3 exists
The horizontal plane 10 corresponding with the end of top tangent line 5 positioned at two dam of pier, 1 top one end of strongly backflowing is vertical.Pass through above-mentioned tool
The setting of body structure may make the ascending current 94 flowed out from the top edge of upstream side 11 and two dam crest of pier that strongly backflows
The level water flow 95 in portion forms normal impact effect.In addition, for upstream side 11 also preferably using such as in the utility model
Lower setting: in hook-shaped, the arc curve 3 backflows the top of two dam of pier, 1 top one end being located at strength setting arc curve 3
Tangent line 5 is tilted along towards upwardly direction to be biased to cushion pool 2；It is flowed out in this way, may make from the top edge of upstream side 11
Ascending current 94 and the level water flow 95 in two dam crest portions form opposite angular impact effect；It would be even more beneficial to form the rolling of the second whirlpool
Water flow 97, to further strengthen second of water body rolling to the effect of energy dissipation of water body；Similarly by the way that corresponding arc curve 3 is arranged
Ascending current 94 can be achieved afterwards and form angular impact effect in the same direction with level water flow 95.
Without loss of generality, the dam crest generally on two dam 1 of pier that strongly backflows has dam crest plane 12, in the pier two that strongly backflows
The side of cushion pool 2 is downstream side 13 backwards on road dam 1, in order to avoid the side sharp keen along formation in the intersection edges of respective surfaces
Corner structure is preferably provided with circular arc chamfering 14 in dam crest plane 12 and 11 intersection of upstream side in the utility model, in dam crest
Plane 12 and 13 intersection of downstream side are provided with circular arc chamfering 14, to play the role of being smoothly connected.
More specifically, it is generally the case that the relative dimensions etc. on two dam 1 of pier that strongly backflows can be set according to the actual situation
It sets, there is no stringent limitations.Such as it is 5m that the width L of the dam crest plane 12, which according to the actual situation, can further be arranged,；And it is right
Different value or the identical value of setting can be set in the radius of circular arc chamfering 14 according to different positions, such as setting dam crest is put down
The circular arc chamfering 14 between circular arc chamfering 14 and dam crest plane 12 and downstream side 13 between face 12 and upstream side 11
Radius is preferably arranged to 2m.In addition, when downstream side 13 is inclined tapered plane, also preferably setting in the utility model
The inclined-plane slope ratio of its tapered plane is 1 ﹕ 0.7.
More specifically, it is contemplated that upstream side 11 needs the percussion by release floodwatering flow, therefore in order to improve the table
The wash-resistant and abrasion-resistant effect of layer；In the utility model further the corresponding surface layer of upstream side 11 be set as one layer it is wash-resistant and abrasion-resistant mixed
Solidifying soil layer 111, the i.e. concrete layer are poured using antiscour, wear-resisting concrete material, and by the Dun Erdao that strongly backflows
The rest part on dam 1 is formed using common concrete material casting；Such as setting scour and abrasion resistant concrete layer 111 is by changing
Property silicon powder concrete material be poured, and rest part then uses normal concrete material (and conventional use of common mixed
Solidifying soil material) it is poured.More specifically, the scour and abrasion resistant concrete layer is further preferably set in the utility model
111 with a thickness of 50cm.
In addition, the utility model also provides a kind of cushion pool, cushion pool 2 it is whole by dam 7, abutment wall 8, strongly backflow pier two
Road dam 1 and plunge pool floor 6 surround, and the strength backflows the setting of two dam of pier in 7 downstream of dam, and wherein the cushion pool is corresponding
Strength two dam 1 of pier that backflows is backflowed two dam 1 of pier using a kind of strength for cushion pool described in the utility model, i.e., its
Strength backflow two dam 1 of pier upstream side use indent arc-shaped curved surface shape.It, can be further and in the structure of cushion pool
Be preferably provided with the strength backflow two dam 1 of pier the axis of dam 15 it is vertical with the impact direction of release floodwatering flow 91 of dam 7；Specifically
It can refer to shown in attached drawing 1.In this way, the release floodwatering flow 91 under letting out from the flood discharge hole on dam 7 will be along perpendicular to the pier that strongly backflows
The direction of the axis of dam 15 on two dams rushes at two dam 1 of pier that strongly backflows, and is more advantageous to the upstream side on two dam 1 of pier that strongly backflows
The flow direction of the change of face 11 bottom water flow 93.
Certainly, without loss of generality, dam 7 and the distance between two dam 1 of pier that strongly backflows, because should at least meet first
The requirement in eddy flow area can be effectively formed the first whirlpool boiling water stream 92.It is highly preferred that corresponding distance can be reserved with, it is ensured that strong
Power two dam of pier, 1 upstream side of backflowing can form the second whirlpool boiling water stream 97；Strength is made full use of to backflow caused by two dam 1 of pier
Strong secondary collision effect of energy dissipation.Backflow the distance between two dam 1 of pier as specific dam 7 and strength, then with dam 7
On release floodwatering flow overflow drop point relationship it is larger, specifically can be depending on practical engineering project.
Claims (10)
- Two dam of pier 1. the strength for cushion pool is backflowed, the strength backflow two dam of pier (1) setting under cushion pool (2) Trip, it is characterised in that: strongly backflow on two dam of pier (1) towards the side of cushion pool (2) be upstream side (11), it is described on Trip side (11) is from the bottom end on two dam of pier (1) that strongly backflows to two dam of pier (1) top of strongly backflowing in the arc of indent Curved.
- Two dam of pier 2. the strength for being used for cushion pool as described in claim 1 is backflowed, it is characterised in that: in the pier two that strongly backflows On any cross section on road dam (1), the arc-shaped curved upstream side (11) is correspondingly formed as in the arc of indent song Line (3), the arc curve (3) is in bottom end tangent line (4) and the end pair for being located at two dam of pier (1) bottom end one end of strongly backflowing The plunge pool floor (6) answered is tangent.
- Two dam of pier 3. the strength for being used for cushion pool as described in claim 1 is backflowed, it is characterised in that: in the pier two that strongly backflows On any cross section on road dam (1), the upstream side (11) of the arc-shaped curved surface shape is correspondingly formed the arc curve for indent (3), the arc curve (3) is corresponding with the end in the top tangent line (5) for being located at two dam of pier (1) top one end of strongly backflowing Horizontal plane (10) it is vertical.
- Two dam of pier 4. the strength for being used for cushion pool as described in claim 1 is backflowed, it is characterised in that: in the pier two that strongly backflows On any cross section on road dam (1), the upstream side (11) of the arc-shaped curved surface shape is correspondingly formed the arc curve for indent (3), the arc curve is in hook-shaped, and the arc curve (3) is on the top for being located at two dam of pier (1) top one end of strongly backflowing Tangent line (5) is tilted along towards upwardly direction to be biased to cushion pool (2).
- Two dam of pier 5. the strength for cushion pool as described in any one of claim 2 to 4 is backflowed, it is characterised in that: The arc curve (3) is the partial trace of circular partial trace or ellipse.
- Two dam of pier 6. the strength for cushion pool as described in any one of claim 2 to 4 is backflowed, it is characterised in that: The arc curve (3) is circular partial trace, and the corresponding radius R of arc curve (3) is less than two dam of pier that strongly backflows (1) height of dam H.
- Two dam of pier 7. the strength for being used for cushion pool as claimed in claim 5 is backflowed, it is characterised in that: in the pier two that strongly backflows The dam crest on road dam (1) has dam crest plane (12), in the case where the side on two dam of pier (1) backwards to cushion pool (2) of strongly backflowing is It swims side (13), dam crest plane (12) and upstream side (11) intersection is provided with circular arc chamfering (14), in dam crest plane (12) and downstream side (13) intersection is provided with circular arc chamfering (14)；The width L of the dam crest plane (12) is 5m；The circle The radius of arc chamfering (14) is 2m.
- Two dam of pier 8. the strength for being used for cushion pool as claimed in claim 7 is backflowed, it is characterised in that: the downstream side It (13) is the tapered plane being obliquely installed, the inclined-plane slope ratio of the tapered plane is 1 ﹕ 0.7.
- Two dam of pier 9. the strength for being used for cushion pool as claimed in claim 7 is backflowed, it is characterised in that: upstream side (11) is right The surface layer answered be one layer of scour and abrasion resistant concrete layer (111), the scour and abrasion resistant concrete layer (111) with a thickness of 50cm.
- 10. cushion pool, the cushion pool (2) by dam (7), abutment wall (8), strongly backflow two dam of pier (1) and plunge pool floor (6) it surrounds, the strength two dam of pier that backflows is arranged in dam (7) downstream, which is characterized in that the strength is backflowed two dam of pier (1) using a kind of Er Daoba for cushion pool described in any one of the claims 1 to 9；The strength is backflowed pier The axis of dam (15) on two dams (1) is vertical with release floodwatering flow impact direction (91) of dam (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820793018.5U CN208251036U (en) | 2018-05-25 | 2018-05-25 | Strength for cushion pool is backflowed two dam of pier and cushion pool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820793018.5U CN208251036U (en) | 2018-05-25 | 2018-05-25 | Strength for cushion pool is backflowed two dam of pier and cushion pool |
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| CN208251036U true CN208251036U (en) | 2018-12-18 |
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| CN201820793018.5U Active CN208251036U (en) | 2018-05-25 | 2018-05-25 | Strength for cushion pool is backflowed two dam of pier and cushion pool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108532564A (en) * | 2018-05-25 | 2018-09-14 | 中国电建集团成都勘测设计研究院有限公司 | Strength for cushion pool is backflowed two dam of pier and cushion pool |
-
2018
- 2018-05-25 CN CN201820793018.5U patent/CN208251036U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108532564A (en) * | 2018-05-25 | 2018-09-14 | 中国电建集团成都勘测设计研究院有限公司 | Strength for cushion pool is backflowed two dam of pier and cushion pool |
| CN108532564B (en) * | 2018-05-25 | 2024-03-22 | 中国电建集团成都勘测设计研究院有限公司 | Strong backflow pier secondary dam for plunge pool and plunge pool |
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