CN206529749U - A kind of power station generating water diverting structure arrangement for taking into account environmental protection and sand discharge demand - Google Patents
A kind of power station generating water diverting structure arrangement for taking into account environmental protection and sand discharge demand Download PDFInfo
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- CN206529749U CN206529749U CN201720062167.XU CN201720062167U CN206529749U CN 206529749 U CN206529749 U CN 206529749U CN 201720062167 U CN201720062167 U CN 201720062167U CN 206529749 U CN206529749 U CN 206529749U
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/60—Ecological corridors or buffer zones
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- 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
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Abstract
The power station generating water diverting structure arrangement of environmental protection and sand discharge demand is taken into account the utility model discloses a kind of, includes the diversion system for side arrangement of pulling in shore, and the blocking dam short, by riverbed main flow position future insufficiency in river course.Future insufficiency is arranged in just to channel thread position on blocking dam two sides crest elevation height, dam body；Dash and sand prevention bank are set before the diversion system intake gate of bank arrangement.The utility model had both met the major function requirement of power station generating water diversion and sand control using simple arrangement；Release ecological flow and the mistake fish demand of environmental protection requirement can be taken into account again；It is not required to set special sand discharge and ecology to release facility, is also not required to set special fish pass, structural facilities arrangement is simple, smaller on the fish movement influence in former river course, simplifies the difficulty of artificial control scheduling, reduces quantities.Due to not blocking river, the influence to environment is reduced.The power station generating water diverting structure arrangement for fragile, higher to the environmental requirement middle-size and small-size Hydraulic and Hydro-Power Engineering of fully-loaded stream, affiliated area surroundings that is particularly suitable for use in.
Description
Technical field
The utility model is related to a kind of water diverting structure arrangement, more particularly, to a kind of affiliated area surroundings it is fragile,
Generating water diverting structure arrangement in the middle-size and small-size Hydraulic and Hydro-Power Engineering built on, fully-loaded stream higher to environmental requirement.
Background technology
Hydraulic and Hydro-Power Engineering is when building hinge dash, generating water diverting structure, in order to ensure generating diversion efficiency and fortune
Row is stable, is both needed in river course arrange water retaining structure, typically river need to all be blocked to disconnected, will necessarily so influenceed in former river course
The normal activity of aquatile, thus consideration of generally still needing sets fish pass structure, conventional way is on water retaining structure
Or bank sets the fish pass structures such as special fish pass；To keep Ecological Stabilization in basin, it is also contemplated that certain life of being released for downstream
State flow, also needs to arrange that special ecology is released facility；In addition, when natural sediment yield is larger in river course, it is also contemplated that setting
Desilting works.Above-mentioned facility is built, and not only engineering structure pattern is various, and engineering operation scheduling is complicated, construction investment increase, weight
What is wanted is due to the expansion of project scale, result in the aggravation to surrounding environment influence, and the influence to vulnerable environment area will
It is bigger.Environmental protection concept how is implemented in project playout, the influence to environment is reduced as far as possible, must cautiously be examined when being conceptual design
The problem of worry.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of major function for both having met power station generating water diversion and sand control
It is required that, ecological flow can be taken into account again and releases and meet fish normal existence demand, be not required to set special facilities respectively, can be simplified fortune
OK, river is not blocked, the less generating water diverting structure arrangement for taking into account environmental protection and sand discharge demand of the influence to environment.
The technical scheme that the utility model is used is：A kind of power station generating diversion building for taking into account environmental protection and sand discharge demand
Thing arrangement, includes the diversion system for side arrangement of pulling in shore, and blocking dam, blocking dam is located in river course, and riverbed master is depended on blocking dam
Reserve jagged, setting dash and sand prevention bank, the dam body of blocking dam before the intake gate of the diversion system for side arrangement of pulling in shore in stream position
The free overflow of energy, the two sides crest elevation of blocking dam, which meets to generate electricity when flood season power station is completely sent out, quotes water level requirement needed for flow, together
When meet in flood season storehouse required water level requirement when flow rate of water flow is more than bed load sediment median particle diameter start velocity.
The blocking dam is arranged close to intake gate.
The blocking dam is arranged in the gradient in river course and is more than bed load sediment median particle diameter critical grade scope, that is, is chosen at
In river course in the maximum scope of the gradient.
The blocking dam dam body is highly 2~5 meters.
The position of breach is located in the range of channel thread on the blocking dam, is conveyed as fish pass, ecological flow, silt logical
Road；The Yokogawa of breach is 1~4m to width, requirement of the fish migration to upstream and downstream head and flow velocity is met, while taking into account sand discharge
And dry season releases ecological flow demand.
There is certain slope the upstream and downstream of the blocking dam, are 1:0.3~1:0.7, a width of 2~4m of dam crest.
The dash and the length of sand prevention bank and bank crest level set before the intake gate, meets the maximum introduced needed for power station
Generating flow and the requirement for crossing bank flow velocity, cross bank flow velocity and do not cause river bed load sediment median particle diameter to start, and crossing bank flow velocity is
0.6~1.8m/s；Also meet dry season riverbed ecological flow to release demand, elevation is higher than the ecological flow of dry season riverbed demand
The water level of corresponding natural river course, sand prevention bank is highly 1~2m.
It is middle-size and small-size Hydraulic and Hydro-Power Engineering that the arrangement, which is used for fully-loaded stream, scale,.
The arrangement is used for the facility of fragile, high to the environmental protection requirement Hydraulic and Hydro-Power Engineering of affiliated area surroundings
Arrangement.
The beneficial effects of the utility model are：Using simple arrangement, the main of power station generating water diversion and sand control had both been met
Functional requirement；Release ecological flow and the fish migration demand of environmental protection requirement can be taken into account again；It is not required to set special sand discharge to set
Apply, be also not required to set special fish pass, structural facilities arrangement is simple, smaller on the fish movement influence in former river course.When blocking
Often dam safety evaluation ability when height of dam degree is relatively low, to meet generating diversion and ecological flow requirement of releasing, power station intake gate lock
Door need to frequently be dispatched with water amount situation of change.Using arrangement of the present utility model, gate manual dispatching, control are simplified
Difficulty.Simultaneously as structural shape is simple, quantities is reduced；Due to not blocking river, reduce as far as possible to environment
Influence.Such a power station generating diversion arrangement, the fully-loaded stream that is particularly suitable for use in, affiliated area surroundings are fragile, environment is wanted
The power station generating water diverting structure of higher middle-size and small-size Hydraulic and Hydro-Power Engineering is asked to arrange.
Brief description of the drawings
Fig. 1 is that the horizontal layout for the generating water diverting structure arrangement that the utility model takes into account environmental protection and sand discharge demand is shown
It is intended to.
Fig. 2 is gap position schematic diagram on blocking dam in Fig. 1.
Fig. 3 is A-A profiles in Fig. 1.
Fig. 4 is B-B profiles in Fig. 1.
In figure：
1-blocking dam；
2-breach；
3-diversion system intake gate；
4-dash and sand prevention bank.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
As shown in figures 1-4, the power station generating water diverting structure arrangement knot of the present utility model for taking into account environmental protection and sand discharge demand
Structure, includes the diversion system for side arrangement of pulling in shore, and blocking dam, blocking dam 1 is located in river course, and riverbed main flow position is leaned on blocking dam 1
Jagged 2 are reserved, dash and sand prevention bank 4, the dam body energy of blocking dam 1 are set before the intake gate 3 of the diversion system for side arrangement of pulling in shore
Free overflow, the two sides crest elevation of blocking dam 1, which meets to generate electricity when flood season power station is completely sent out, quotes water level requirement needed for flow, simultaneously
Meet required water level requirement when flow rate of water flow is more than bed load sediment median particle diameter start velocity in flood season storehouse.
Specifically, it is arranged in river course, the highly relatively low two sides crest elevation of blocking dam 1 is high, just to channel thread portion
The position elevation of breach 2 is low.
The distance of the blocking dam 1 and intake gate 3 should be close proximity to arrangement.
The dam location of blocking, answers choice arrangement gradient in river course to be more than bed load sediment median particle diameter critical grade
Scope, is typically chosen in river course in the maximum scope of the gradient.
The blocking dam two sides crest elevation being arranged in river course is high, just low to main stem position breach elevation.
The blocking dam dam body maximum height is relatively low, is 2~5 meters, the influence to environment is small.Dam body is highly determined along river
It is small to the maximum bottom width of dam body, it is not required to set fish rest pond.The setting of its two sides crest elevation, when should meet flood season power station and completely sending out
Generate electricity water level requirement needed for quoting flow, should also meet in flood season storehouse flow rate of water flow and be more than bed load sediment median particle diameter and start stream
Required water level requirement when fast.
The position of breach should be located in the range of channel thread on the blocking dam, be conveyed as fish pass, ecological flow, silt
Deng passage；The Yokogawa of breach should meet requirement of the fish migration to upstream and downstream head and flow velocity to width, and width is generally 1
~4m, breach should take into account sand discharge simultaneously and dry season releases ecological flow demand.
The dam body of the blocking dam can free overflow, the ecological flow generate electricity and quote flow superfluous water amount, released from and river
Come under husky dam body spilling and breach by blocking dam to let out in water.Its section need to meet steady demand and upstream and downstream are arranged as
Answer the gradient, generally 1:0.3~1:0.7, dam crest is wide to take into account construction demand but should not be too big, preferably 2~4m；
The length and bank crest level of the sand prevention bank set before described intake gate, should meet the maximum hair introduced needed for power station
The magnitude of current and the requirement for crossing bank flow velocity, cross bank flow velocity by not causing river bed load sediment median particle diameter to start control, cross bank stream
Speed is generally 0.6~1.8m/s；Dry season riverbed ecological flow should also be met to release demand, its elevation should be higher than that dry season riverbed
The water level of natural river course corresponding to the ecological flow of demand, sand prevention bank is highly preferably 1~2m.
Described arrangement, it is adaptable on fully-loaded stream, scale be medium and small Hydraulic and Hydro-Power Engineering.Especially fit
For affiliated area surroundings to be fragile, facility to environmental protection requirement very high Hydraulic and Hydro-Power Engineering is arranged.
The utility model had both met generating water diversion and sand control requirement；The demand of ecological flow and fish migration can be taken into account again；No
Special fish pass and ecology need to be set to release facility, quantities is reduced；River is not blocked, the influence to environment is reduced as far as possible,
Intake gate gate traffic control, the difficulty of control are also simplify simultaneously.
It is described in detail with reference to specific embodiment：
Certain medium hydropower station engineering, Project Areas vulnerable environment, affiliated basin is fully-loaded stream, and head pivot area riverbed is right
Bank side is protection zone.According to environmental requirement, must not build for engineering influences right bank protection zone environment；Engineering needs to ensure former after building
The normal migration passage of raw fish；River course domestic demand is released ecological flow at least 4.37m3/s。
Engineering affiliated river flood season and dry season carry out water and differ larger, to ensure normal power generation diversion and the effect in power station
Benefit, need to stop up high intake gate water level before gates；But for take into account dry season release ecological flow and fish normal migration and need not be again
Special facility is set respectively, therefore, river should not all be blocked.According to the scale of engineering, development task demand and environmental protection
It is required that, to ensure power station normal power generation diversion and benefit, while considering to reduce the influence to environment as far as possible, arranged in riverbed
Blocking dam being highly only 4m, not blocking in river all.To avoid building for power station from influenceing right bank protection zone, generating diversion
Building is arranged in left bank.
The scale of incorporation engineering, consider requirement, engineering that diversion and power releases to water level, sand discharge and ecological flow to right bank
The factor such as the influence of protection zone and fish species, progress comprehensive analysis, which determines this engineering, can meet water diversion engineering generating
Major function requirement, can take into account again environmental protection and sand discharge demand generating water diverting structure arrangement.
As shown in figures 1-4, blocking dam 1 is arranged in riverbed, plays a part of banked-up water level, power station diversion is met
The requirement of generating.But the heap soil or fertilizer over and around the roots height of water level necessarily causes the decline of flow rate of water flow in river course, also necessarily causes lower sluicing stream to take husky energy
The decline of power, such as takes no action to necessarily cause the alluvial of silt in storehouse, so as to influence the generating diversion quality in power station and normal
On-road efficiency；Simultaneously because this engineering reservoir is substantially without storage capacity, the depth of water is shallower in storehouse, before the intake gate lock of power station inlet velocity compared with
Greatly, when intake gate opens a sluice gate diversion, the silt of greater particle size in river bed load is easily made to carry in channel, so as to cause to generate electricity
Diversion silt content increases and the Sediment Siltation in flume channel.Such as routinely mentality of designing, it is considered to power station diversion and power demand,
River should be blocked disconnected by blocking dam 1, because this engineering still has the demand of fish migration and ecological flow of releasing, and such as all cut in river course
It is disconnected, then the specialized facilities that fish pass and ecological flow must be set to release in addition, so then building species it is more, from now on power station adjust
Degree operation is complicated, periphery protection zone ambient influnence is increased and construction investment is larger.Through analysis and research, to simplify structure and work
Cheng Yunhang difficulty, and the influence to environment is reduced as far as possible, take following aggregate measures and solve：
1st, by blocking dam 1 and power station intake gate 3 close proximity to arrangement, to cause the flow rate of water flow entered in storehouse not drop as far as possible
It is low excessive, it is considered to the influence of the factor such as orographic condition, stream gradient, determine blocking dam 1 with power station intake gate 3 at a distance of about 80m.
2nd, for the benefit of silt is discharged in storehouse, and the position choice arrangement of blocking dam 1 in the maximum scope of the gradient, is somebody's turn to do in river course
Section mean inclination is about 1%, more than bed load sediment median particle diameter critical grade 4 ‰.
3rd, consider that project scale, aerial drainage are washed away, to the factors such as the influence degree of environment, the dam body dam of blocking dam 1 to downstream
Crest level is no more than main stem elevation.If the height of blocking dam 1 obtains larger, although beneficial to the matter for improving power station generating diversion
Amount, but the increasing of its caused depth rise, the depth of water, will make it that flow rate of water flow lowers row that is more and being unfavorable for silt in storehouse in storehouse
Go out, thus blocking dam 1 height set it is smaller.Consideration will largely come in beach volleyball outbound, water level needed for analysis generating diversion
And flow rate of water flow is more than water level requirement needed for bed load sediment median particle diameter start velocity in storehouse, through comprehensive analysis, the dam of blocking dam 1
Body maximum height is defined as 4m.
4th, the demand of fish migration etc. is considered, blocking dam 1 does not block in river all disconnected, and blocking dam is in the left and right bank two in river course
Side arrangement, the main flow position future insufficiency 2 in river course, as the passage of fish pass, ecological flow, silt conveying etc..
5th, according to the features such as the body length of this engineering fish, Burden-Swimming Ability of KM, migration characteristic, while mud when taking into account non-flood period water
Husky start velocity needs and should met dry season to release the requirement of ecological flow, determines the width of breach 2.Breach primary section
To be trapezoidal, bottom width is 2.0m, and two side slope ratios are 1:1, the depth of water is 0.6~4.1m in migration season breach, and indentation, there is maximum
Flow velocity is about 1.2m/s, breach along river to maximum bottom width be 5.2m.The sectional dimension of indentation, there, meets the normal migration of fish
Requirement；Meanwhile, when dry season, natural water amount was smaller, Water Requirement be essentially identical to former river course state pass through lack
Let out under mouth 2, when flood season natural water amount is larger, Water Requirement passes through under breach 2 and the joint of blocking dam both sides elevation dam body 1
Let out.
6th, come to let out under husky dam body and breach 2 by blocking dam 1 because the height of blocking dam 1 is relatively low, in river.Dry season
Runoff and sediment load amount hour, can by being let out under breach 2, flood season runoff and sediment load amount it is larger when, under being combined by dam body and breach 2
Let out.Dam body by can free overflow build is set, it is considered to dam stabilization and spend being connected for dam current and downstream, its section is upper and lower
Trip has been arranged as one and has answered the gradient, is taken as 1:0.4.Dam crest is wide to take into account construction demand but should not be too big, and this engineering is taken as 2m.
7th, the dash and the length of sand prevention bank 4 and bank crest level set before intake gate 3, introducing needed for should meeting power station is most
Big generating flow and the requirement for crossing bank flow velocity, cross bank flow velocity by not so that river bed load sediment median particle diameter starts control, root
According to river course inlet flow rate and sediment charge, particle composition situation, it is 0.6~1.8m/s to cross bank flow rates；
The length and bank crest level of dash and sand prevention bank 4, should also meet dry season riverbed ecological flow and release demand, and it is high
Journey should be higher than that the water level of the natural river course corresponding to the ecological flow of dry season riverbed demand.According to environmental requirement, engineering need to be let out
Put ecological flow and at least should be 4.37m3/ s, according to the natural stage-discharge relation line in river course, river course naturally carrys out flow for 4.37m3/s
When, corresponding water level is 2157.14m, as ensures that water-blocking bank elevation should be higher than that before ecological flow Minimum requirements, intake gate
2157.14m.The fraction for the ecological flow let out under consideration, determines that water-blocking bank elevation is 2157.50m before the intake gate of power station, bank is high
Spend for 1m, length is 40m.So ensure that when natural water amount is less than 4.37m in river course3During/s, manual dispatching is not required to
Control, all natural water can not enter in the intake gate of power station and fully enter in former river course.The setting of water-blocking bank was both given
Ecological flow is released the absolute guarantee of demand, in turn simplify frequent scheduling and the operation difficulty of intake gate gate.Due to not again
Set special ecological flow to release facility, save construction investment, also reduce the influence to environment.
Embodiment described above is merely to illustrate technological thought of the present utility model and feature, and its object is to make ability
Technical staff in domain it will be appreciated that content of the present utility model and implement according to this, it is impossible to only limits this practicality with the present embodiment
New the scope of the claims, i.e., equal change or modification that the spirit disclosed in all the utility model is made still can be new in this practicality
In the scope of the claims of type.
Claims (9)
- The power station generating water diverting structure arrangement of environmental protection and sand discharge demand is taken into account 1. a kind of, includes the diversion for side arrangement of pulling in shore System, blocking dam, it is characterised in that blocking dam (1) is located in river course, are reserved with by riverbed main flow position scarce on blocking dam (1) Dash and sand prevention bank (4), the dam body energy of blocking dam (1) are set before mouth (2), the intake gate (3) of the diversion system for side arrangement of pulling in shore Free overflow, the two sides crest elevation of blocking dam (1), which meets to generate electricity when flood season power station is completely sent out, quotes water level requirement needed for flow, together When meet in flood season storehouse required water level requirement when flow rate of water flow is more than bed load sediment median particle diameter start velocity.
- 2. the power station generating water diverting structure arrangement of environmental protection and sand discharge demand, its feature are taken into account according to claim 1 It is, the blocking dam (1) is arranged close to intake gate (3).
- 3. the power station generating water diverting structure arrangement of environmental protection and sand discharge demand, its feature are taken into account according to claim 1 It is, the blocking dam (1) is arranged in the gradient in river course and is more than bed load sediment median particle diameter critical grade scope, that is, is chosen at In river course in the maximum scope of the gradient.
- 4. the power station generating water diverting structure arrangement of environmental protection and sand discharge demand, its feature are taken into account according to claim 1 It is, blocking dam (1) dam body is highly 2~5 meters.
- 5. the power station generating water diverting structure arrangement of environmental protection and sand discharge demand, its feature are taken into account according to claim 1 It is, the position of breach (2) is located in the range of channel thread on the blocking dam (1), defeated as fish pass, ecological flow, silt Send passage；The Yokogawa of breach (2) is 1~4m to width, requirement of the fish migration to upstream and downstream head and flow velocity is met, while simultaneous Turning round and look at sand discharge and dry season releases ecological flow demand.
- 6. the power station generating water diverting structure arrangement of environmental protection and sand discharge demand, its feature are taken into account according to claim 1 It is, there is certain slope the upstream and downstream of the blocking dam (1), are 1:0.3~1:0.7, a width of 2~4m of dam crest.
- 7. the power station generating water diverting structure arrangement of environmental protection and sand discharge demand, its feature are taken into account according to claim 1 It is, the dash and the length and bank crest level of sand prevention bank (4) set before the intake gate (3), introducing needed for meeting power station Maximum generation flow and the requirement for crossing bank flow velocity, cross bank flow velocity and do not cause river bed load sediment median particle diameter to start, cross bank stream Speed is 0.6~1.8m/s；Also meet dry season riverbed ecological flow to release demand, elevation is higher than the ecology of dry season riverbed demand The water level of natural river course corresponding to flow, sand prevention bank is highly 1~2m.
- 8. the power station generating water diverting structure arrangement of environmental protection and sand discharge demand, its feature are taken into account according to claim 1 It is, it is middle-size and small-size Hydraulic and Hydro-Power Engineering that the arrangement, which is used for fully-loaded stream, scale,.
- 9. the power station generating water diverting structure arrangement of environmental protection and sand discharge demand, its feature are taken into account according to claim 8 It is, the arrangement is used for the facility cloth of fragile, high to the environmental protection requirement Hydraulic and Hydro-Power Engineering of affiliated area surroundings Put.
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| CN201720062167.XU CN206529749U (en) | 2017-01-18 | 2017-01-18 | A kind of power station generating water diverting structure arrangement for taking into account environmental protection and sand discharge demand |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759168A (en) * | 2017-01-18 | 2017-05-31 | 中国电建集团北京勘测设计研究院有限公司 | A kind of generating water diverting structure arrangement for taking into account environmental protection and sand discharge demand |
| CN108677894A (en) * | 2018-05-29 | 2018-10-19 | 长江勘测规划设计研究有限责任公司 | It is a kind of to utilize pipeline type karstic ground water electricity generation system and design method |
| CN114182701A (en) * | 2020-09-14 | 2022-03-15 | 张茂崑 | Small-hydraulic power generation system of river type |
-
2017
- 2017-01-18 CN CN201720062167.XU patent/CN206529749U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759168A (en) * | 2017-01-18 | 2017-05-31 | 中国电建集团北京勘测设计研究院有限公司 | A kind of generating water diverting structure arrangement for taking into account environmental protection and sand discharge demand |
| CN108677894A (en) * | 2018-05-29 | 2018-10-19 | 长江勘测规划设计研究有限责任公司 | It is a kind of to utilize pipeline type karstic ground water electricity generation system and design method |
| CN108677894B (en) * | 2018-05-29 | 2023-12-15 | 长江勘测规划设计研究有限责任公司 | Power generation system utilizing pipeline type karst groundwater and design method |
| CN114182701A (en) * | 2020-09-14 | 2022-03-15 | 张茂崑 | Small-hydraulic power generation system of river type |
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