CN209703446U - A kind of gravity dam water discharging structure - Google Patents
A kind of gravity dam water discharging structure Download PDFInfo
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- CN209703446U CN209703446U CN201920306024.8U CN201920306024U CN209703446U CN 209703446 U CN209703446 U CN 209703446U CN 201920306024 U CN201920306024 U CN 201920306024U CN 209703446 U CN209703446 U CN 209703446U
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- diversion channel
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- diversion
- gravity dam
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Abstract
The utility model discloses a kind of gravity dam water discharging structures, it supplies water including the first diversion channel for being located at Overflow Section, the downstream dissipator of energy river being connected to the first diversion channel, for ecology or the second diversion channel of emptying, the water outlet in the second diversion channel is directly connected to the first diversion channel；The width in downstream dissipator of energy river is equal to the width in the first diversion channel.The first diversion channel of the utility model is connected to the second diversion channel, the water in the second diversion channel is changed its course, imports in the first diversion channel, can effectively reduce the width in downstream dissipator of energy river, to reduce the excavated volume and supporting amount in river, it is effectively reduced project amount and investment.
Description
Technical field
The utility model belongs to hydraulic and hydroelectric engineering, and in particular to a kind of gravity dam water discharging structure.
Background technique
Gravity dam is block rivers water flow with raising of water level or the water retaining structure of adjusting flow, has regulated flow, prevents
The functions such as flood, water supply, emptying, maintenance, power generation.Gravity dam is made of several monoliths, includes non-overflow section of dam, Overflow Section, confession
Dam section, emptying monolith etc..The major function of Overflow Section is flood discharge, and use time is the flood season.Ecological water supply monolith
Major function provides necessary water supply for the dry season for the animals and plants in gravity dam downstream, the mankind.Monolith is vented mainly big
When dam needs to overhaul (often water level is lower in library), water level in library is lowerd.Ecological water supply monolith or emptying monolith and overflow
The service condition of monolith is generally different.
Under normal conditions, Overflow Section, ecological water supply monolith or emptying monolith are all made of independent drainage gallery.Such as Fig. 1,
In traditional scheme, the second diversion channel supplied water or be vented for ecology is equipped in 1 side of the first diversion channel of Overflow Section
2, the first diversion channel 1 and the second diversion logical 2 are respectively to be independently arranged, and each self-operating is irrelevant, and the water outlet of the two
It is connected to downstream dissipator of energy river 6, water flow enters downstream river course 6 by diversion channel and carries out energy dissipating, then downstream dissipator of energy river 6
Width have to not less than both the sum of width L1+L2.
Therefore easily cause downstream dissipator of energy river too wide using independent drainage gallery, to cause channel excavation supporting amount mistake
Greatly, engineering narrow particularly with river valley, two sides massif is steep, project amount and cost are increased particularly evident.
Utility model content
In view of the above-mentioned problems, the utility model, which is intended to provide one kind, can reduce the width in downstream dissipator of energy river, to subtract
The excavated volume in few river and the gravity dam water discharging structure of supporting amount.
The technical solution that the utility model solves the problems, such as is: a kind of gravity dam water discharging structure, including being located at Overflow Section
First diversion channel, the downstream dissipator of energy river being connected to the first diversion channel, the second diversion supplied water or be vented for ecology are logical
Road, the water outlet in second diversion channel are directly connected to the first diversion channel；
The width in the downstream dissipator of energy river is equal to the width in the first diversion channel.
In above scheme, the second diversion channel supplied water or be vented for ecology is located at the side of Overflow Section, by first
Under diversion channel is connected to the second diversion channel, rather than respectively the independent purpose being connected to downstream dissipator of energy river is to shorten
Swim the width in energy dissipating river.
Preferably, second diversion channel water outlet is equipped with gate.
Further, first diversion channel includes bottom plate and be set to bottom plate two sides lead wall；
Second diversion channel water outlet is set to the leading on wall of the first diversion channel；
The gate is bulkhgead gate, and in water (flow) direction, bulkhgead gate and the first diversion channel to lead wall concordant.
Specifically, first diversion channel and the second diversion channel include bottom plate and are set to leading for bottom plate two sides
Wall, second diversion channel are connected to the first diversion channel nearest from the second diversion channel.
The remarkable result of the utility model is: the first diversion channel is connected to the second diversion channel, by the second diversion channel
Water change its course, import the first diversion channel in, the width in downstream dissipator of energy river can be effectively reduced, to reduce opening for river
Digging amount and supporting amount, are effectively reduced project amount and investment.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is traditional gravity dam water discharging structure plan view.
Fig. 2 is the utility model gravity dam water discharging structure plan view.
In figure: the 1-the first diversion channel, the 2-the second diversion channel, 3-lead wall, 5-plane gates, 6-downstream dissipator of energy
River.
Specific embodiment
As shown in Fig. 2, a kind of gravity dam water discharging structure, including being located at the first diversion channel 1 of Overflow Section, drawing with first
The downstream dissipator of energy river 6 of the connection of aquaporin 1, the second diversion channel 2 supplied water or be vented for ecology.It supplies water or puts for ecology
The second empty diversion channel 2 is located at the side of Overflow Section.
First diversion channel 1 and the second diversion channel 2 include bottom plate and be set to bottom plate two sides lead wall 3.
The water outlet in second diversion channel 2 is directly connected to the first diversion channel 1.Second diversion channel 2 with
First diversion channel 1 connection nearest from the second diversion channel 2.Second diversion channel, 2 water outlet is set to the first diversion
It leads on wall 3 in channel 1.
Second diversion channel, 2 water outlet is equipped with bulkhgead gate 5.In water (flow) direction, bulkhgead gate 5 and first
Lead wall 3 concordantly in diversion channel 1.
The width in the downstream dissipator of energy river 6 is equal to the width in the first diversion channel 1.
Difference is played the role of in the different periods in second diversion channel 2, in the dry season, the master in the second diversion channel 2
Wanting function is to provide necessary water supply for the animals and plants in gravity dam downstream, the mankind, i.e., ecology supplies water；When needing to overhaul, second
The major function in diversion channel 2 is to lower water level in library, that is, is vented.
Setting bulkhgead gate 5 be to make to let out smooth in water flow under Overflow Section, otherwise can 2 water outlet of the second diversion channel deposit
In notch, the water flow in the first diversion channel 1 will affect.
Since the monolith for supplying water or being vented for ecology is different from the service condition of Overflow Section, (Overflow Section comes in flood
Face and just open, and often do not opened for the monolith of ecology water supply or emptying at this time), and the monolith for supplying water or being vented for ecology
Water diversion flow is smaller, therefore by the second diversion channel 2 according to certain angle deflection Overflow Section, by the first diversion channel 1 and
The connection of two diversion channels 2, the water in the second diversion channel 2 is changed its course, and imports in the first diversion channel 1, water flow is enable to pass through overflow
First diversion channel 1 of monolith is led off, then the width in downstream dissipator of energy river 6 only needs the width of L2 just to can satisfy requirement,
Reduce channel excavation amount and supporting amount, is effectively reduced project amount and investment.
Claims (4)
1. a kind of gravity dam water discharging structure, including being located at the first diversion channel of Overflow Section, being connected to the first diversion channel
Downstream dissipator of energy river, the second diversion channel supplied water or be vented for ecology, it is characterised in that: second diversion channel goes out
The mouth of a river is directly connected to the first diversion channel；
The width in the downstream dissipator of energy river is equal to the width in the first diversion channel.
2. gravity dam water discharging structure according to claim 1, it is characterised in that: second diversion channel water outlet is set
There is gate.
3. gravity dam water discharging structure according to claim 2, it is characterised in that: first diversion channel include bottom plate and
Be set to bottom plate two sides leads wall；
Second diversion channel water outlet is set to the leading on wall of the first diversion channel；
The gate is bulkhgead gate, and in water (flow) direction, bulkhgead gate and the first diversion channel to lead wall concordant.
4. gravity dam water discharging structure according to claim 1, it is characterised in that: first diversion channel and the second diversion
Channel includes bottom plate and the wall of leading for being set to bottom plate two sides, second diversion channel and nearest from the second diversion channel the
The connection of one diversion channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920306024.8U CN209703446U (en) | 2019-03-12 | 2019-03-12 | A kind of gravity dam water discharging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920306024.8U CN209703446U (en) | 2019-03-12 | 2019-03-12 | A kind of gravity dam water discharging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209703446U true CN209703446U (en) | 2019-11-29 |
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ID=68643791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920306024.8U Active CN209703446U (en) | 2019-03-12 | 2019-03-12 | A kind of gravity dam water discharging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209703446U (en) |
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2019
- 2019-03-12 CN CN201920306024.8U patent/CN209703446U/en active Active
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