CN204875721U - Diversion tunnel outlet energy dissipation device - Google Patents
Diversion tunnel outlet energy dissipation device Download PDFInfo
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- CN204875721U CN204875721U CN201520600103.1U CN201520600103U CN204875721U CN 204875721 U CN204875721 U CN 204875721U CN 201520600103 U CN201520600103 U CN 201520600103U CN 204875721 U CN204875721 U CN 204875721U
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- Prior art keywords
- diversion tunnel
- energy dissipation
- section
- open channel
- energy
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- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 20
- 239000004567 concrete Substances 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000006096 absorbing agent Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 239000000872 buffer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
< b > the utility model discloses a diversion tunnel export energy absorber. Comprises an open channel section (4) connected with a diversion tunnel (5) and an outlet, the tail part of the open channel section is connected with an energy dissipation section, and the bottom of the energy dissipation section is provided with a horizontal section (7). The utility model discloses lay a series of steps in the diversion tunnel export and carry out the energy dissipation to the effectual washing away that reduces diversion tunnel export rivers to river bank side slope and river course has satisfied environmental protection and engineering requirement, and it is higher to have solved diversion tunnel export elevation through this arrangement mode, and the problem of difficulty is laid to the energy dissipation mode, compares with traditional energy dissipation mode and has practiced thrift the engineering investment, has shortened construction period. [ b ]
Description
Technical field
the utility model relates to a kind of Diversion Tunnel energy dissipation below spillway device, belongs to the hydraulic architecture technical field in Hydraulic and Hydro-Power Engineering.
Background technology
in Construction for Hydroelectric Project water conservancy diversion process, the general flow velocity of the current let out from Diversion Tunnel, kinetic energy and potential energy are all comparatively large, in order to avoid damaging simultaneously according to National Environmental evaluation and water and soil conservation requirement riverbed is domatic, need to carry out energy dissipating process to current.Conventional treatment mode often adopts lays reinforced gabion, the measures such as boulder of jettisoninging, although this engineering measure can meet requirement of engineering, have that reinforced gabion cost is higher, difficult, the problems such as boulder of jettisoninging is uneven, if Diversion Tunnel outlet is higher, this Energy Dissipation Modes is laid more difficult.
Utility model content
the purpose of this utility model is, provides a kind of Diversion Tunnel energy dissipation below spillway device, prior art cost is higher to solve, difficult, the problems such as boulder of jettisoninging is uneven.
the technical solution of the utility model:
a kind of Diversion Tunnel energy dissipation below spillway device, comprise and Diversion Tunnel, the open channel section that outlet connects, open channel segment trailer is connected with energy dissipating section, is provided with horizontal segment bottom energy dissipating section.
in preceding guide hole outlet energy dissipator, described open channel section, energy dissipating section and horizontal segment both sides are provided with abutment wall.
in preceding guide hole outlet energy dissipator, described energy dissipating section be included in bedrock surface build get up concrete drop step and bedrock surface dig out stone drop step.
compared with prior art, the utility model is laid a series of step in Diversion Tunnel outlet and is carried out energy dissipating, thus effectively decrease Diversion Tunnel outlet stream washing away Riparian buffers and river course, meet ring water to protect and engine request, Diversion Tunnel outlet elevation is solved higher by this arrangement, Energy Dissipation Modes lays the problem of difficulty, has saved construction investment, shorten the construction period compared with traditional Energy Dissipation Modes.
Accompanying drawing explanation
fig. 1 is the elevational schematic view of the utility model structure;
fig. 2 is the floor map of the utility model structure.
mark in accompanying drawing: 1-concrete drop step, 2-stone drop step, 3-abutment wall, 4-open channel section, 5-Diversion Tunnel, 6-river course, 7-horizontal segment, the former form line of 8-, 9-bedrock surface.
Detailed description of the invention
below in conjunction with drawings and Examples, the utility model is described in further detail, but not as to any restriction of the present utility model.
a kind of Diversion Tunnel energy dissipation below spillway device, as depicted in figs. 1 and 2: comprise and Diversion Tunnel 5, the open channel section 4 that outlet connects, open channel segment trailer is connected with energy dissipating section, is provided with horizontal segment 7 bottom energy dissipating section.Open channel section 4, energy dissipating section and horizontal segment 7 both sides are provided with abutment wall 3.Energy dissipating section be included in bedrock surface 9 build get up concrete drop step 1 and bedrock surface 9 dig out stone drop step 2.
Embodiment
with reference to figure 1, the Energy Dissipation Modes of this example mainly relies on the energy dissipating section step section being located at Diversion Tunnel exit to carry out energy dissipating to current, by the resistance of step section to current, lower sluicing is flowed between step, forms horizontal axis rotary roll, and there is strong blending effect with step surface main flow, force current to produce strong turbulent fluctuation, mix air in a large number, thus reach the object of energy dissipating.Energy dissipating section is formed primarily of continuous print step, and step mainly contains two kinds of structures; A kind of is the concrete drop step 1 of building by laying bricks or stones at bedrock surface, and another kind is on bedrock surface, dig out stone drop step 2.During concrete enforcement, stepwise manner can be selected according to engineering concrete condition; If flow rate of water flow is higher, can consider to protect at ledge surface shotcrete with mesh.The current flowed out from Diversion Tunnel enter energy dissipating section the bundle of abutment wall 3 is narrow by Diversion Tunnel exit open channel section 4, and what force current rule enters river course 6 through energy dissipating section, decrease washing away Riparian buffers and river course.
can implement as follows during concrete enforcement:
step 1, be first exported to domatic, the landform of former form line 8 between streamflow and the situation of bedrock surface 9 in conjunction with Diversion Tunnel 5, carry out the selection of energy dissipation type, when pile reinforced gabion is too high, boulder of jettisoninging cannot form effective energy dissipating if carry out, the form of Step Energy Dissipation of the present utility model can be considered.
step 2, the height laid in conjunction with step, by width and the height of elevation computation determination step.
step 3, former form line 8 is exported to Diversion Tunnel 5 clear up, first construct one section of open channel section 4 in Diversion Tunnel 5 outlet, then consider the generation type of step according to engineering concrete condition.This example have employed two kinds of stepped form, and what epimere adopted is the concrete drop step 1 of building by laying bricks or stones at bedrock surface, and what hypomere adopted is on bedrock surface, dig out stone drop step 2.Build abutment wall 3 by laying bricks or stones at concrete drop step 1 and stone drop step 2 both sides, under the bundle of abutment wall 3 is narrow, what force current rule enters river course 6 through one section of horizontal segment 7 again after energy dissipating section, to reduce current washing away Riparian buffers and river course.
Claims (3)
1. a Diversion Tunnel energy dissipation below spillway device, is characterized in that: comprise and Diversion Tunnel (5), the open channel section (4) that outlet connects, and open channel segment trailer is connected with energy dissipating section, is provided with horizontal segment (7) bottom energy dissipating section.
2. Diversion Tunnel energy dissipation below spillway device according to claim 1, is characterized in that: described open channel section (4), energy dissipating section and horizontal segment (7) both sides are provided with abutment wall (3).
3. Diversion Tunnel energy dissipation below spillway device according to claim 2, is characterized in that: described energy dissipating section is included in bedrock surface (9) and builds concrete drop step (1) that gets up and dig out stone drop step (2) at bedrock surface (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600103.1U CN204875721U (en) | 2015-08-11 | 2015-08-11 | Diversion tunnel outlet energy dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600103.1U CN204875721U (en) | 2015-08-11 | 2015-08-11 | Diversion tunnel outlet energy dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204875721U true CN204875721U (en) | 2015-12-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520600103.1U Active CN204875721U (en) | 2015-08-11 | 2015-08-11 | Diversion tunnel outlet energy dissipation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204875721U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351184A (en) * | 2016-08-29 | 2017-01-25 | 中国电建集团西北勘测设计研究院有限公司 | Narrow-valley gravity dam and method for reducing influence of flood handling breach under-pressure on construction period |
| CN110847066A (en) * | 2019-11-27 | 2020-02-28 | 中国电建集团成都勘测设计研究院有限公司 | Outlet structure for high retaining wall culvert |
| CN113931144A (en) * | 2021-11-30 | 2022-01-14 | 中国水利水电建设工程咨询西北有限公司 | Energy dissipation scour protection structure of diversion tunnel export |
-
2015
- 2015-08-11 CN CN201520600103.1U patent/CN204875721U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351184A (en) * | 2016-08-29 | 2017-01-25 | 中国电建集团西北勘测设计研究院有限公司 | Narrow-valley gravity dam and method for reducing influence of flood handling breach under-pressure on construction period |
| CN110847066A (en) * | 2019-11-27 | 2020-02-28 | 中国电建集团成都勘测设计研究院有限公司 | Outlet structure for high retaining wall culvert |
| CN113931144A (en) * | 2021-11-30 | 2022-01-14 | 中国水利水电建设工程咨询西北有限公司 | Energy dissipation scour protection structure of diversion tunnel export |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |