CN106284240A - A kind of power station is in construction time downstream interim water-supply structure and method - Google Patents
A kind of power station is in construction time downstream interim water-supply structure and method Download PDFInfo
- Publication number
- CN106284240A CN106284240A CN201610752749.0A CN201610752749A CN106284240A CN 106284240 A CN106284240 A CN 106284240A CN 201610752749 A CN201610752749 A CN 201610752749A CN 106284240 A CN106284240 A CN 106284240A
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- Prior art keywords
- water
- diversion tunnel
- power station
- construction time
- downstream
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The invention belongs to hydraulic structure interim hydrotechny field, particularly relate to a kind of power station at construction time downstream interim water-supply structure.It includes being positioned on massif and unloading big vast diversion tunnel for temporarily, described diversion tunnel is provided with diversion tunnel entrance, described diversion tunnel porch is provided with the gate controlling current, the upstream of described diversion tunnel entrance is provided with a working tunnel connected with diversion tunnel, described working tunnel early stage is the passage of described diversion tunnel barrel construction, and the later stage is as the bypass hole downstream supplied water.The present invention uses and the working tunnel of diversion tunnel is reconstructed into bypass hole, it is not necessary to offer the hole that discharges water specially again, reduces construction investment, can save expense simultaneously, reduces investment, saves the duration, has significant technical economic benefit.
Description
Technical field
The invention belongs to hydraulic structure interim hydrotechny field, particularly relate to a kind of power station downward in the construction time
Swim interim water-supply structure and method.
Background technology
Increasingly mature along with Chinese large-sized power station development technique, needs to take into full account ecological flow in current Power Plant Design
Environmental effect to downstream.In the Design of Water Resources and Hydroelectric Projects of storehouse big for high dam, the interim flood discharge of construction time downstream flood discharge is built
Build thing, after Practical Completion, need to all block, but let out ability by plain batton door, arc door shield water and the control of water conservancy project flood releasing structure
Restriction, under engineering during lock water-retention, be typically employed in dam body or massif layering arrange the hole that temporarily discharges water, define at present often
Relay closure temporary aperture method.Some engineering is even without considering the ecological flow environmental effect to downstream, in work
The phenomenon of a period of time lower reache separation of flow occurs during lock water-retention under journey, bigger on affecting in the river channel ecology environment short time.
The engineering using layering hole downstream to supply water, by the limit value of gate dash pressure, will set up hole, thus increase engineering
Amount and expense, affect the duration of a project.
Summary of the invention
In order to overcome the big storehouse of the large hydropower station high dam risk that downstream supplies water during lower lock water-retention big, cost is high, impact
The problem of duration, it is an object of the invention to provide a kind of power station in construction time downstream interim water-supply structure and method.
For realizing above-mentioned technical purpose, the present invention adopts the following technical scheme that and is achieved:
A kind of power station is at construction time downstream interim water-supply structure, including being positioned on massif and unloading leading of flood for temporarily
Stream hole, described diversion tunnel is provided with diversion tunnel entrance, and described diversion tunnel porch is provided with the gate controlling current, and described diversion tunnel enters
The upstream of mouth is provided with a working tunnel connected with diversion tunnel, and described working tunnel early stage is the logical of described diversion tunnel barrel construction
Road, the later stage is as the bypass hole downstream supplied water.
Preferably, in described bypass hole, be provided with control lock chamber near its exit, be provided with in described control lock chamber in order to
Control upper pond level and amount of water to be discharged cone valve.
Preferably, in described bypass hole, the energy dissipating room consuming flow energy, described energy dissipating it are additionally provided with near its exit
Room is positioned at the rear of described control lock chamber.
Preferably, described energy dissipating room is oval.
Preferably, a length of 7-20m of described energy dissipating room, width 1-10m, width 1-10m.
Preferably, described control lock chamber is also communicated with the extraneous passage that controls, and the described extraneous passage end that controls leads to described
Controlling lock chamber, the other end leads to bottom surface.Concrete, the described extraneous passage that controls is vertical shaft or inclined shaft.
Another object of the present invention, it is provided that a kind of method supplied water in the construction time in power station the most temporarily, including following
Step:
Step 1, engineering reservoir complete water-retention；
Step 2, when upper pond level exceed bypass hole described cone valve input elevation after, described diversion tunnel entrance lock
The lower lock of door；
Step 3, under the control of described cone valve, downstream supply water；
After step 4, water level exceed water conservancy project permanent flood releasing structure input elevation, close cone valve；
Step 5, described diversion tunnel start closure, complete to supply water after having blocked.
Beneficial effects of the present invention:
The present invention uses and the working tunnel of diversion tunnel is reconstructed into bypass hole, it is not necessary to offers the hole that discharges water again specially, subtracts
Few construction investment, can save expense simultaneously, reduces investment, saves the duration, has significant technical economic benefit.
Accompanying drawing explanation
Fig. 1 is the horizontal layout schematic diagram of the interim water-supply structure of the present invention；
Fig. 2 is the cross-sectional view of diversion tunnel of the present invention；
Fig. 3 is bypass hole and the cross-sectional view of vertical shaft cooperation.
In figure, 1-diversion tunnel entrance；2-bypasses hole；3-vertical shaft；4-cone valve；5-diversion tunnel；6-energy dissipating room；7-massif；8-
Control lock chamber.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
Embodiment 1
In order to overcome the big storehouse of the large hydropower station high dam risk that downstream supplies water during lower lock water-retention big, cost is high, impact
The problem of duration, present embodiments provides a kind of power station as shown in Figures 1 to 3 at construction time downstream interim water-supply structure,
Including being positioned on massif 7 and unloading big vast diversion tunnel 5 for temporarily, described diversion tunnel 5 is provided with diversion tunnel entrance 1, described diversion tunnel
Being provided with the gate controlling current at entrance 1, the upstream of described diversion tunnel entrance 1 is provided with a working tunnel connected with diversion tunnel 5,
Described working tunnel early stage is the passage of diversion tunnel 5 barrel construction, and the later stage is as the bypass hole 2 downstream supplied water.
Wherein, described early stage and later stage calculated with the construction deadline of described diversion tunnel 5, and described diversion tunnel 5 is constructed
The time being not fully complete is early stage, and described diversion tunnel 5 rear time of having constructed is the later stage.
The present invention uses and the working tunnel of diversion tunnel 5 is reconstructed into bypass hole 2, it is not necessary to offer the hole that discharges water again specially,
Reduce construction investment, expense can be saved simultaneously, reduce investment, save the duration, there is significant technical economic benefit.
Embodiment 2
On the basis of embodiment 1, as described in Figure 3, in described bypass hole 2, it is provided with control lock chamber 8 near its exit,
Being provided with to control upper pond level and amount of water to be discharged cone valve 4 in described control lock chamber 8, institute's cone valve 4 has energy dissipation rate height, construction letter
Single, take up room little, the advantage that maintenance requirement is low.Described cone valve 4 can be selected for cone valve common on market, retouches the most in detail at this
State.
Being additionally provided with energy dissipating room 6 near its exit in described bypass hole 2, described energy dissipating room 6 is positioned at described control lock chamber 8
Rear, described energy dissipating room 6 is in order to consume the energy of the high-velocity flow released by cone valve 4.The present invention uses described cone valve 4 and disappears
The structure of room 6 can control in order to continuous emission flow, adapt to high water head, flow at different levels, it is possible to resolve high water head, high flow rate, continuously
The problems such as long operational time, downstream flood-discharge energy-dissipating.
Described energy dissipating room 6 is oval, is arranged to oval direction water flow through stream condition preferably, and limit current,
Formed bringing energy dissipating water energy.The a length of 7-20m of described energy dissipating room 6, width 1-10m, width 1-10m, in the range of this
More preferable effect of energy dissipation can be reached.
Described control lock chamber 8 is also communicated with the extraneous passage 3 that controls, and described control is led in described extraneous passage 3 one end that controls
Lock chamber 8, the other end leads to bottom surface, controls passage 3 realization control lock chamber 8 by this external world and contacts with external, facilitates cone valve 4
Maintenance and observation.Specifically, the described extraneous passage that controls is that the selection of vertical shaft or inclined shaft, vertical shaft or inclined shaft is according to geology feelings
Condition determines.
Embodiment 3
In order to overcome existing dam seepage line in prior art to raise, and cannot overhaul, have a strong impact on lacking of safety of dam body
Fall into, the invention provides a kind of method supplied water in the construction time in power station the most temporarily, comprise the following steps:
Step 1, engineering reservoir complete water-retention；
Step 2, when upper pond level exceed bypass hole 2 described cone valve 4 input elevation after, described diversion tunnel entrance 1 gate
Lower lock；
Step 3, under the control of described cone valve 4, downstream supply water；
After step 4, water level exceed water conservancy project permanent flood releasing structure input elevation, close cone valve 4；
Step 5, described diversion tunnel 5 start closure, complete to supply water after having blocked.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to change and including modification include these.
Claims (8)
1. a power station is at construction time downstream interim water-supply structure, it is characterised in that: include that being positioned at massif (7) above and is used for
Unloading the diversion tunnel (5) of flood, described diversion tunnel (5) is provided with diversion tunnel entrance (1), and described diversion tunnel entrance (1) place is provided with control temporarily
The gate of controlling the water circulation stream, the upstream of described diversion tunnel entrance (1) is provided with a working tunnel connected with diversion tunnel (5), described construction
Propping up the passage that hole early stage is the construction of described diversion tunnel (5) barrel, the later stage is as the bypass hole (2) downstream supplied water.
Power station the most according to claim 1 is at construction time downstream interim water-supply structure, it is characterised in that: on described side
Be provided with control lock chamber (8) in logical hole (2) near its exit, be provided with in described control lock chamber (8) to control upper pond level and
Amount of water to be discharged cone valve (4).
Power station the most according to claim 2 is at construction time downstream interim water-supply structure, it is characterised in that: on described side
Be additionally provided with the energy dissipating room (6) consuming flow energy in logical hole (2) near its exit, described energy dissipating room (6) is positioned at described control
The rear of lock chamber (8).
Power station the most according to claim 3 is at construction time downstream interim water-supply structure, it is characterised in that: described energy dissipating
Room (6) is oval.
Power station the most according to claim 3 is at construction time downstream interim water-supply structure, it is characterised in that: described energy dissipating
The a length of 7-20m of room (6), width 1-10m, width 1-10m.
Power station the most according to claim 3 is at construction time downstream interim water-supply structure, it is characterised in that: described control
Lock chamber (8) is also communicated with the extraneous passage (3) that controls, and described control lock chamber (8) is led to, separately in described extraneous passage (3) one end that controls
Bottom surface is led in one end.
Power station the most according to claim 3 is at construction time downstream interim water-supply structure, it is characterised in that: the described external world
Controlling passage is vertical shaft or inclined shaft.
8. the method that supplied water in the construction time in a power station the most temporarily, it is characterised in that: comprise the following steps:
Step 1, engineering reservoir complete water-retention；
Step 2, when upper pond level exceed bypass hole (2) described cone valve (4) input elevation after, described diversion tunnel entrance (1) lock
The lower lock of door；
Step 3, under the control of described cone valve (4), downstream supply water；
After step 4, water level exceed water conservancy project permanent flood releasing structure input elevation, close cone valve (4)；
Step 5, described diversion tunnel (5) start closure, complete to supply water after having blocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610752749.0A CN106284240A (en) | 2016-08-29 | 2016-08-29 | A kind of power station is in construction time downstream interim water-supply structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610752749.0A CN106284240A (en) | 2016-08-29 | 2016-08-29 | A kind of power station is in construction time downstream interim water-supply structure and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106284240A true CN106284240A (en) | 2017-01-04 |
Family
ID=57674274
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610752749.0A Pending CN106284240A (en) | 2016-08-29 | 2016-08-29 | A kind of power station is in construction time downstream interim water-supply structure and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968227A (en) * | 2017-05-16 | 2017-07-21 | 中国电建集团成都勘测设计研究院有限公司 | The maintenance arrangement of the permanent plug of induced joint diversion tunnel |
| CN108677892A (en) * | 2018-07-27 | 2018-10-19 | 中国电建集团成都勘测设计研究院有限公司 | Diversion tunnel working tunnel is used as reconstruction structure of the ecology for water hole |
| CN109356124A (en) * | 2018-11-21 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Cavern usual friendship fork structure |
| CN113338236A (en) * | 2021-05-26 | 2021-09-03 | 中国电建集团西北勘测设计研究院有限公司 | Structure and method for discharging ecological water to downstream in initial storage of reservoir |
| CN113481928A (en) * | 2021-07-27 | 2021-10-08 | 中国三峡建工(集团)有限公司 | High-water-level water storage method for construction period of high-dam large reservoir and at initial operation stage |
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| CN1888322A (en) * | 2006-08-02 | 2007-01-03 | 四川大学 | Method for rebuilding diversion tunnel to pressure expanded aerated flood-discharge tunnel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968227A (en) * | 2017-05-16 | 2017-07-21 | 中国电建集团成都勘测设计研究院有限公司 | The maintenance arrangement of the permanent plug of induced joint diversion tunnel |
| CN108677892A (en) * | 2018-07-27 | 2018-10-19 | 中国电建集团成都勘测设计研究院有限公司 | Diversion tunnel working tunnel is used as reconstruction structure of the ecology for water hole |
| CN108677892B (en) * | 2018-07-27 | 2024-04-19 | 中国电建集团成都勘测设计研究院有限公司 | Reconstruction structure for ecological water supply tunnel by diversion tunnel construction branch tunnel |
| CN109356124A (en) * | 2018-11-21 | 2019-02-19 | 中国电建集团成都勘测设计研究院有限公司 | Cavern usual friendship fork structure |
| CN109356124B (en) * | 2018-11-21 | 2023-11-21 | 中国电建集团成都勘测设计研究院有限公司 | Chamber level crossing fork structure |
| CN113338236A (en) * | 2021-05-26 | 2021-09-03 | 中国电建集团西北勘测设计研究院有限公司 | Structure and method for discharging ecological water to downstream in initial storage of reservoir |
| CN113481928A (en) * | 2021-07-27 | 2021-10-08 | 中国三峡建工(集团)有限公司 | High-water-level water storage method for construction period of high-dam large reservoir and at initial operation stage |
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