CN214116524U - Outlet energy dissipation structure for diversion in large-flow construction period and flood discharge in operation period - Google Patents
Outlet energy dissipation structure for diversion in large-flow construction period and flood discharge in operation period Download PDFInfo
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- CN214116524U CN214116524U CN202022066302.2U CN202022066302U CN214116524U CN 214116524 U CN214116524 U CN 214116524U CN 202022066302 U CN202022066302 U CN 202022066302U CN 214116524 U CN214116524 U CN 214116524U
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Abstract
The utility model discloses an export dissipation structure of large-traffic construction period water conservancy diversion, flood discharge in operation period aims at overcoming among the prior art to the great condition of flow under, the water conservancy diversion is released the hole and is combined to arrange the great weak point of the degree of difficulty, provides a water conservancy diversion that has construction period water conservancy diversion and flood discharge in operation period function concurrently and is released hole export dissipation structure. The outlet energy dissipation structure comprises a construction-period flow guide structure and an operation-period flood discharge structure which are arranged at an outlet of the flow-guiding and discharge hole, the construction-period flow guide structure comprises an energy dissipation sill and system anchor bars, the energy dissipation sill extends from an outlet open flow section of the flow-guiding and discharge hole to the downstream, and the system anchor bars are arranged at the bottom of the energy dissipation sill; the flood discharge structure in the operation period comprises basic concrete paved on the upper part of the energy dissipation sill and a flip bucket arranged on the basic concrete, and the flip bucket is connected with the open flow section of the outlet.
Description
Technical Field
The utility model relates to an export dissipation structure of construction period water conservancy diversion, flood discharge of operation period is applicable to hydraulic and hydroelectric engineering, is particularly useful for being equipped with the hydraulic and hydroelectric engineering in water conservancy diversion hole of releasing.
Background
At present, in many hydropower stations, in order to save investment, a diversion tunnel is generally reconstructed into a discharge tunnel, the main functions of the diversion tunnel are diversion in the construction period, reservoir flood discharge and maintenance emptying in the operation period, the arrangement mode that a steel pipe is embedded in the middle of the diversion tunnel and a cone valve is arranged at an outlet for energy dissipation is mostly adopted, but the diversion tunnel is mostly used under the condition of small flow. For the case of large flow, the combination arrangement is difficult, and is usually a single setting, so that the engineering investment is large.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome among the prior art to under the great condition of flow, the water conservancy diversion is released the hole and is combined to arrange the great weak point of the degree of difficulty, provides a water conservancy diversion of having water conservancy diversion and flood discharge function in operation period concurrently and is released hole export dissipation structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses an export dissipation structure of large-traffic construction period water conservancy diversion, operation period flood discharge, including the construction period water conservancy diversion structure and the operation period flood discharge structure of establishing in water conservancy diversion relief hole exit, the construction period water conservancy diversion structure includes energy dissipation sill and system anchor bar, energy dissipation sill begins to extend downstream from the export open flow section of water conservancy diversion relief hole, and energy dissipation sill bottom sets up the system anchor bar; the flood discharge structure in the operation period comprises basic concrete paved on the upper part of the energy dissipation sill and a flip bucket arranged on the basic concrete, and the flip bucket is connected with the open flow section of the outlet.
Preferably, the contact surface of the top of the energy dissipation sill and the foundation concrete is provided with a chiseling structure.
Preferably, connecting anchor bars are arranged between the foundation concrete and the energy dissipation sill.
Preferably, the downstream of the flip bucket is provided with a punching pit, the bottom of the punching pit adopts a reinforced concrete bottom plate, and a flat pressing hole is arranged.
Preferably, the outlet open flow section is embedded with a drain pipe.
The utility model has the advantages that: the utility model discloses be suitable for and satisfy the discharge and the construction phase difference of diversion great condition of flow rate, the discharge does not receive the restriction of outlet valve size and overflow, can satisfy the energy dissipation requirement of construction phase water conservancy diversion, operation phase flood discharge simultaneously when the discharge is great, need not to set up the diversion tunnel alone and the hole of releasing, realizes that the combination of diversion tunnel and hole of releasing arranges, simple structure, construction convenience, saving engineering investment.
Drawings
Figure 1 is utility model's a big flow construction period water conservancy diversion, operation period flood discharge's export dissipation structure overlook the structural layout drawing.
Figure 2 is utility model's a side structural arrangement picture of export dissipation structure of large-traffic construction period water conservancy diversion, flood discharge during operation.
In the figure: 1. an outlet open flow section; 2. energy dissipation sill; 3. system anchor bars; 4. a flip bucket; 5. punching a pit; 6. a base concrete; 7. a reinforced concrete floor; 8. flattening the hole; 9. and a water discharge pipe.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 and 2, the utility model discloses an export dissipation structure of large-traffic construction period water conservancy diversion, operation period flood discharge, including establishing the construction period water conservancy diversion structure and the operation period flood discharge structure in water conservancy diversion release hole exit.
The construction period diversion structure comprises an energy dissipation sill 2 and a system anchor bar 3, the energy dissipation sill starts to extend downstream from an outlet open flow section 1 of the diversion relief hole, and the system anchor bar 3 is arranged at the bottom of the energy dissipation sill 2. And a drain pipe 9 is embedded in the open flow section 1 at the outlet.
The flood discharge structure in the operation period comprises a foundation concrete 6 paved on the upper part of the energy dissipation sill 2 and a flip bucket 4 arranged on the foundation concrete 6, wherein the flip bucket 4 is connected with the outlet open flow section 1. And a punching pit 5 is arranged at the downstream of the flip bucket 4, the bottom of the punching pit 5 adopts a reinforced concrete bottom plate 7, and a flat pressing hole 8 is arranged.
The flood discharge structure in the operation period is constructed and arranged on the foundation of the diversion structure in the construction period after diversion in the construction period is finished. The contact surface of the top of the energy dissipation platform and the foundation concrete 6 is provided with a chiseling structure, or a connecting anchor bar is arranged between the foundation concrete 6 and the energy dissipation sill. Because the foundation concrete 6 is poured and constructed above the energy dissipation sill after the diversion is finished in the construction period, the foundation concrete 6 is ensured to be firmly bonded with the energy dissipation sill in a way of chiseling a chiseling structure at the top of the energy dissipation sill and/or connecting anchor bars.
The technical scheme of this application satisfies the circumstances that the difference is great between discharge and construction period water conservancy diversion volume of operation period, and the discharge does not receive the restriction of outlet valve size and overflow, can satisfy the energy dissipation requirement of construction period water conservancy diversion, operation period flood discharge simultaneously when the discharge is great, need not to set up the diversion tunnel alone and the hole of releasing, realizes the combination of diversion tunnel and hole of releasing and arranges, simple structure, construction convenience, saving engineering investment.
The technical scheme of this application can surely play and satisfy the energy dissipation requirement of construction period water conservancy diversion, flood discharge of operation period simultaneously, need not to set up the diversion tunnel alone and the hole of releasing, realizes that the combination of diversion tunnel and the hole of releasing arranges simple structure, construction convenience, saving engineering investment's effect.
Claims (5)
1. An outlet energy dissipation structure for large-flow construction-period diversion and operation-period flood discharge comprises a construction-period diversion structure and an operation-period flood discharge structure which are arranged at an outlet of a diversion discharge hole, and is characterized in that the construction-period diversion structure comprises an energy dissipation sill and system anchor bars, the energy dissipation sill extends downstream from an open flow section at the outlet of the diversion discharge hole, and the system anchor bars are arranged at the bottom of the energy dissipation sill; the flood discharge structure in the operation period comprises basic concrete paved on the upper part of the energy dissipation sill and a flip bucket arranged on the basic concrete, and the flip bucket is connected with the open flow section of the outlet.
2. The outlet energy dissipation structure for flow guiding during large-flow construction and flood discharging during operation according to claim 1, wherein a chiseling structure is arranged on the contact surface of the top of the energy dissipation sill and the foundation concrete.
3. The outlet energy dissipation structure for flow guiding during large-flow construction and flood discharging during operation according to claim 1 or 2, wherein connecting anchor bars are arranged between the foundation concrete and the energy dissipation sill.
4. The outlet energy dissipation structure for flow guiding during large-flow construction and flood discharging during operation according to claim 1, wherein a flushing pit is arranged at the downstream of the flip bucket, a reinforced concrete bottom plate is adopted at the bottom of the flushing pit, and a flat pressing hole is arranged.
5. The outlet energy dissipation structure for flow guiding during large-flow construction and flood discharging during operation according to claim 1, wherein a drainage pipe is embedded in an open flow section of the outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022066302.2U CN214116524U (en) | 2020-09-18 | 2020-09-18 | Outlet energy dissipation structure for diversion in large-flow construction period and flood discharge in operation period |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022066302.2U CN214116524U (en) | 2020-09-18 | 2020-09-18 | Outlet energy dissipation structure for diversion in large-flow construction period and flood discharge in operation period |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214116524U true CN214116524U (en) | 2021-09-03 |
Family
ID=77497182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022066302.2U Active CN214116524U (en) | 2020-09-18 | 2020-09-18 | Outlet energy dissipation structure for diversion in large-flow construction period and flood discharge in operation period |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214116524U (en) |
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2020
- 2020-09-18 CN CN202022066302.2U patent/CN214116524U/en active Active
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