CN106120677B - A kind of low water head ecology crosses garth remodeling method and structure - Google Patents
A kind of low water head ecology crosses garth remodeling method and structure Download PDFInfo
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Abstract
The invention discloses a kind of low water head ecologies to cross garth remodeling method and structure, this method includes dam body ecological reconstruction, the withered phase crosses the setting of fish channel, flood season cross fish channel setting and etc., the structure includes dam body, dam body bottom end is dam body foundation, several scalloped channels A are offered in dam body, it is provided with that the matched downstream withered phase crosses fish channel and the dam crest withered phase crosses fish channel in scalloped channels A, dam crest in dam body left bank or right bank or two sides opens up scalloped channels B, being provided with dam crest flood season in scalloped channels B crosses fish channel, dam crest flood season, which crosses fish passages downstream and is connected with downstream flood season, crosses fish channel.The present invention both small-sized dam dam structure of partial demolition to a certain extent; give the reparation of ecological environmental protection function to having developed protected tributary, and makes full use of the existing ecological environmental protection function value for having developed the small-sized dam of the built following low water heads of height of dam 20m in protected tributary.
Description
Technical field
The present invention relates to a kind of low water head ecologies to cross garth remodeling method and structure, belongs to hydraulic and hydroelectric engineering environment
Protection technique field.
Background technology
" mainstream exploitation, tributary protection " is a new approaches of ecological environmental protection in China's water conservancy and hydropower exploitation, be by
According to the Heavenly Stems and Earthly Branches stream entirety ecological environmental protection in the order unified planning water conservancy and hydropower exploitation of " avoid, slow down, compensate and rebuild "
Work, the essence of tributary protection are to substitute mainstream habitat, affected water in compensatory protection mainstream exploitation with tributary habitat
Biology, and balanced growth and protection between mainstream and tributary, tributary habitat, which substitutes, is used as compensatory safeguard measure, is protected with it
The advantages such as validity, technical feasibility, economic rationality, environment and society be acceptable are protected, it can be to the ecosystem of river Heavenly Stems and Earthly Branches stream
System diversity is effectively maintained, and realizes the two-win of water resources and hydropower development and environmental protection.
What tributary protection was that the various unfavorable eco-environmental impacts caused by the exploration project of mainstream compensate most effective arranges
It applies, to certain in mainstream is developed for affected rare, peculiar aquatile, tributary protection may be to be carried out just to it
Protect and provided for the fry of artificial enhancement releasing most viable, the most effective approach of suitable habitats in ground.But from proposition tributary
The concept of protection is embodied to it, makes branch due to lacking Administrative support and being not carried out power and the not perfect of compensation mechanism
The reasons such as stream protection power shortage cause " mainstream exploitation, tributary protection " to be difficult to realize environmental benefit, economic benefit, society's effect
The effective unified and balance of benefit, the Eco-environmental Protection Works of " mainstream exploitation, tributary protection " are practical in water conservancy and hydropower exploitation holds
There is also a series of query and problem in row, technology maturation, protecting effect are preferable and easy to operation, the example implemented is even more
Lack.
For having carried out water resources and hydropower development but need to carry out the tributary of aquatic life habitat protection, due to it
The problem of environment for being related to, economy, society etc., is more complicated, is ground about its Reasonable Protection, reparation, reconstruction and compensation etc.
Study carefully, for example remove certain built job facilities on developed protected tributary, or builds some environmental protection installations to change
Be apt to water quality, adjust Eco-hydrological Processes, build suitable habitat, be pulled through fish channel etc., to realize that Heavenly Stems and Earthly Branches stream ecological functions can
The research work of sustainable development etc. is still in blank stage.
Therefore, work is protected according to having developed protected tributary " mainstream exploitation, tributary protect " aquatic life habitat
" remove and have water conservancy and hydropower facility " and " newly-built Function in Environmental facility " composite request, it is comprehensive from environment, economy and society etc.
Close angle degree sets out, the innovative built engineering measure developed on protected tributary, and such as drop dam, overflow dam, hammed water
The Function in Environmental of the heights of dam such as dam, overflow dam 20m and low water head hydraulic and hydroelectric engineering facility below is transformed, with to protected
Tributary carries out the reparation and reconstruction of ecological environmental protection function, draws and leads to protected tributary aquatile survival activity space, and seeks
It makes suitable aquatile and substitutes habitat, realize Heavenly Stems and Earthly Branches stream ecological functions sustainable development, build environmental type water conservancy and hydropower
Engineering is imperative and meets needs of promoting a conservation culture.
Invention content
It is an object of the invention to：It is inhabited according to protected tributary " mainstream exploitation, tributary protection " aquatile has been developed
" removing built water conservancy and hydropower facility " and " newly-built Function in Environmental facility " composite request of work is protected on ground, from environment, warp
Ji and the comprehensive angles such as society are set out, and are provided a kind of low water head ecology and are crossed garth remodeling method and structure, can be to a certain degree
Upper partial demolition has developed heights of dam 20m and hereinafter, the dams such as the built drop dam in protected tributary, overflow dam, hammed water dam, overflow dam
Top can overflow flood discharge the small-sized dam dam structure of low water head, give ecological environmental protection function to having developed protected tributary
It repairs, and the existing ecological ring for having developed the built height of dam 20m in protected tributary and the small-sized dam of following low water head can be made full use of
Border defencive function value, is transformed it from environmental protection angle, small in not exclusively destruction original height of dam 20m and following low water head
Under type dam upstream and downstream longtime running on the basis of established aquatile habitat, logical protected tributary aquatile existence is drawn to live
Dynamic space, and build suitable aquatile and substitute habitat, avoid the height of dam 20m and following low water head water that protected tributary is built
Both destructions original low water head hydraulic and hydroelectric engineering facility upstream and downstream that the sharp direct global blowup of hydroelectric project facility is removed has formed water
Raw Biotope Landscape, and new blast working ecological environment destruction and pollution are formed, realize " mainstream exploitation, tributary protection " environment
Benefit, economic benefit, the effective unified and balance of social benefit.
The present invention is achieved by following technical solution：
A kind of low water head ecology crosses garth remodeling method, and this method specifically includes following steps：
(A) dam body ecological reconstruction
A1, using miniature presplit blasting and concrete cutting, cut method opened up on dam body it is several it is spaced apart lack
What mouthful channel A, scalloped channels A were located at step downstream face is segmented into incline structure, being segmented into horizontal structure and be positioned at dam crest
The 1/3-1/2 of dam body height；
A2, using miniature presplit blasting and concrete cutting, cut method dam body left bank or right bank or two sides dam crest
Open up several scalloped channels B, scalloped channels B and scalloped channels A arranged for interval one by one；
(B) the withered phase crosses the setting of fish channel
B1, based on the scalloped channels A of step downstream face is segmented the smooth-going structure to be formed, using armored concrete to lack
Mouth, which is reinforced, to be formed downstream withered phase of U-shaped and crosses fish channel, and the downstream withered phase crosses base of dam depth of the fish channel end with dam body downstream
Pool is connected；
B2, based on the smooth-going structure of the scalloped channels A of dam crest segmentations, notch is reinforced using armored concrete
The dam crest withered phase for forming U-shaped crosses fish channel, and the dam crest withered phase, which crosses fish channel and crosses fish channel with the downstream withered phase, to be connected；
(C) flood season crosses the setting of fish channel
C1, be arranged on step downstream face it is several fill out pier, fill out pier height and be sequentially increased and top is incline structure；
C2, fish channel is crossed in the downstream flood season for filling out the setting inclination arrangement of pier top portion, fills out pier top end and opens up and the downstream flood season
The rest pond that fish channel is connected is crossed, downstream flood season crosses fish channel low side and is connected with underwater bed；
C3, based on the scalloped channels B of dam crest, scalloped channels B is reinforced to form U-shaped using armored concrete
Dam crest flood season crosses fish channel, which, which crosses fish channel and cross fish channel with downstream flood season, is connected.
The width of the scalloped channels A and scalloped channels B is 1.7-3.3m, the length of the angular sectors of scalloped channels A
≤ 30m, angle of inclination are 25 ° -45 °.
The gradient that the downstream withered phase crosses fish channel is 25 ° -45 °, length≤30m, width 1.5-3.0m, and depth is
0.5-1.5m。
The length in the rest pond is 0.5-1m, width 1-2m, depth 0.3-0.6m.
The depth that the dam crest withered phase crosses fish channel is 0.5-1.5m.
The gradient that the downstream flood season crosses fish channel is 25 ° -45 °, length≤50m, width 1.5-3m, depth 0.5-
1.5m。
A kind of low water head ecology crosses garth reconstruction structure, which includes dam body, dam body be divided into step downstream face, dam crest and
Slope upstream face, dam body bottom end are dam body foundation, and dam body foundation downstream is equipped with base of dam pool and underwater bed, is offered in dam body
It is provided with that the matched downstream withered phase crosses fish channel and to cross fish logical the dam crest withered phase in several scalloped channels A, scalloped channels A
Road, the dam crest in dam body left bank or right bank or two sides open up scalloped channels B, and dam crest flood season is provided in scalloped channels B, and to cross fish logical
Road, dam crest flood season, which crosses fish passages downstream and is connected with downstream flood season, crosses fish channel, which crosses fish channel and pass through several settings
It is supported in the pier of filling out of step downstream face.
The beneficial effects of the invention are as follows：
Compared with prior art, low water head ecology provided by the invention crosses garth remodeling method and structure, according to having developed
" remove and have water conservancy and hydropower facility " of protected tributary " mainstream exploitation, tributary protection " aquatic life habitat protection work with
" newly-built environment-friendly function facility " composite request, both partial demolition had developed the built drop in protected tributary to a certain extent
The small-sized dam dam structure of the following low water heads of the heights of dam 20m such as dam, overflow dam, hammed water dam, overflow dam, to having developed protected tributary
Give the reparation of ecological environmental protection function, and makes full use of that have developed the built following low water heads of height of dam 20m in protected tributary small
The existing ecological environmental protection function value of type dam, is transformed it from environmental protection angle, and former dam is destroyed incomplete
Under high 20m or less low water heads miniature water above and below the dam longtime running on the basis of established aquatile habitat, and draw logical protected
Tributary aquatile survival activity space is protected, and builds suitable aquatile and substitutes habitat, has reached hydraulic and hydroelectric engineering and has opened
The environmental benefit of hair " mainstream exploitation, tributary protection ", economic benefit, social benefit effectively unification and balance, realize Heavenly Stems and Earthly Branches stream
Ecological functions coordinate sustainable development.
Description of the drawings
Fig. 1 is that low water head ecology crosses garth scalloped channels cutting structure chart in the present invention；
Fig. 2 is the vertical view that low water head ecology crosses garth in the present invention；
Fig. 3 is the A-A sectional views of Fig. 2；
Fig. 4 is the B-B sectional views of Fig. 2；
In figure：1- step downstream faces；2- dam crests；The slopes 3- upstream face；4- base of dam pools；5- underwater beds；The downstreams 6- are withered
Phase crosses fish channel；The 7- dam crests withered phase crosses fish channel；The downstreams 8- flood season crosses fish channel；9- dam crest flood seasons cross fish channel；10- rests
Pond；11- dam body foundations；12- scalloped channels A；13- scalloped channels B；14- anchor blocks；15- raw water reservoir levels；Reservoir after 16- transformations
Water level, 17- dam bodys.
Specific implementation mode
Technical scheme of the present invention is described further with reference to the accompanying drawings and embodiments, but required protection domain
It is not limited to described；
A kind of low water head ecology provided by the invention crosses garth remodeling method, and this method specifically includes following steps：
(A) dam body ecological reconstruction
A1, using miniature presplit blasting and concrete cutting, cut method opened up on dam body it is several it is spaced apart lack
What mouthful channel A, scalloped channels A were located at step downstream face is segmented into incline structure, being segmented into horizontal structure and be positioned at dam crest
The 1/3-1/2 of dam body height；
A2, using miniature presplit blasting and concrete cutting, cut method dam body left bank or right bank or two sides dam crest
Open up several scalloped channels B, scalloped channels B and scalloped channels A arranged for interval one by one；
(B) the withered phase crosses the setting of fish channel
B1, based on the scalloped channels A of step downstream face is segmented the smooth-going structure to be formed, using armored concrete to lack
Mouth, which is reinforced, to be formed downstream withered phase of U-shaped and crosses fish channel, and the downstream withered phase crosses base of dam depth of the fish channel end with dam body downstream
Pool is connected；
B2, based on the smooth-going structure of the scalloped channels A of dam crest segmentations, notch is reinforced using armored concrete
The dam crest withered phase for forming U-shaped crosses fish channel, and the dam crest withered phase, which crosses fish channel and crosses fish channel with the downstream withered phase, to be connected；
(C) flood season crosses the setting of fish channel
C1, be arranged on step downstream face it is several fill out pier, fill out pier height and be sequentially increased and top is incline structure；
C2, fish channel is crossed in the downstream flood season for filling out the setting inclination arrangement of pier top portion, fills out pier top end and opens up and the downstream flood season
The rest pond that fish channel is connected is crossed, downstream flood season crosses fish channel low side and is connected with underwater bed；
C3, based on the scalloped channels B of dam crest, scalloped channels B is reinforced to form U-shaped using armored concrete
Dam crest flood season crosses fish channel, which, which crosses fish channel and cross fish channel with downstream flood season, is connected.
The width of the scalloped channels A and scalloped channels B is 1.7-3.3m, the length of the angular sectors of scalloped channels A
≤ 30m, angle of inclination are 25 ° -45 °.
The gradient that the downstream withered phase crosses fish channel is 25 ° -45 °, length≤30m, width 1.5-3.0m, and depth is
0.5-1.5m。
The length in the rest pond is 0.5-1m, width 1-2m, depth 0.3-0.6m.
The depth that the dam crest withered phase crosses fish channel is 0.5-1.5m.
The gradient that the downstream flood season crosses fish channel is 25 ° -45 °, length≤50m, width 1.5-3m, depth 0.5-
1.5m。
Embodiment：
(1) project profile
Ma Maya level-ones power station is big (2) the type engineering such as II, is developed for dam-type, dam site is located at Guanling fauna and Xingren
The northern disk Jiang Ganliu of county's intersection, the above water catching area 16068.0km of dam site2, average annual flow 309.0m at dam site3/
s；Engineering development task based on generating electricity, take second place by shipping, takes into account and ensures downstream ecology environment, landscape water；The normal water storage of reservoir
Position 585.0m, 1.365 hundred million m of corresponding storage capacity3, level of dead water 570.0m, 0.732 hundred million m of adjusting storage capacity3, there is day regulation performance；Power station
Installed capacity 558MW ensures output 97MW, 15.92 hundred million kWh of Mean annual energy production；Main structures include grinding coagulation
Gravity dam, diversion system, left bank underground power house and navigation structure composition.
(2) aquatic life habitat protected object
Ma Maya level-one Hydropower Station Constructions, which are related to section, has 9 section of fish mesh, 9 subfamily 35 to belong to 48 kinds, wherein having《China
Animals on the brink of extinction Red Data Book fish》Easily danger fish：Former 3 kinds of the carp and Chang Tun Catfish etc. of leaf knot fish, crow, Pearl River system Endemic fish leaf knot
5 kinds of the former carp of fish, crow, Chang Tun Catfish, Met roller and Chang Wei Select-Committee etc..5 kinds of the former carp of leaf knot fish, crow, Chang Tun Catfish, Met roller, Chang Wei Select-Committee etc.
Fish are distributed in Ma Maya level-one Dam Site upstream and downstream, and have short distance migration phenomenon, and therefore, engineering emphasis will
The above fish are as " mainstream exploitation, tributary protection " aquatic life habitat protected object.
(3) the library tail tributary rivers Xi Mi low water head checkdam ecological reconstruction situation (as shown in Figs 1-4)
West secrete river low water head checkdam be located at Ma Maya level-ones power station library tail right bank tributary-west secrete river converge mouth more than
100.0m, checkdam height of dam 14.0m, be radial-flow type, dam crest can overflow flood discharge, crest elevation 600.0, dam bottom elevation 586.0m.
Checkdam dam body outer layer is 60cm thickness C20 armored concrete, and internal layer is enrockment, and two dam abutments go deep into basement rock 2.5m, and basis is 2.0m
Thick plain concrete construction；Checkdam upstream face is 60 ° of straight slopes, and downstream face is stepped ramp type drop bank, high per level-one step
2.0m, totally 7 grades of steps, the step entirety gradient are 45 °；There is most strong point to reach 8.0m, bosom below checkdam base of dam bed elevation
Pool is washed away in drop up to 1.5m；Checkdam dam length 33.0m, dam crest thickness 3.0m, dam base thickness 18.0m；Checkdam reservoir area return water
11.0km reservoir level is throughout the year in 600.0m, reservoir maximum water depth reaches 13.5m.
Ma Maya level-ones power station " mainstream exploitation, tributary are protected " aquatic life habitat is protected according to Environmental Protection Department
It secretes river checkdam ecology it is required that Ma Maya level-ones power station implements west and crosses fish improvement project, local government also promises to undertake not in west
It secretes river and carries out hydroelectric development construction, protected with meeting 5 kinds of straddling fish stocks such as the former carp of leaf knot fish, crow, Chang Tun Catfish, Met roller, Chang Wei Select-Committee
Shield requires.
The scalloped channels pattern that river checkdam dam body ecological reconstruction is secreted in west is concave, takes miniature presplit blasting and coagulation
Soil cutting cuts construction technology, is removed to its stepped ramp type drop bank downstream face and dam crest.Dam body downstream face notch is removed
It at 1, is laid at river position of center line, the gradient after dismounting is 30 °, reduces 15 ° than the former stepped ramp type downstream face gradient, changes
Dam body downstream face after making removes smooth-going the structure long 12.0m, recess width 2.7m of barbed portion.
2 notch of dam crest of dam body 17 is removed at 2, is laid at first at river position of center line, high by original 600.0
Journey is removed to 591.8m elevations, the dam crest long 7.6m of 2 notch, the wide 2.7m of groove after dismounting, the smooth-going structure formed after removing
The smooth-going structure of barbed portion formation is removed without bank, seamless overlap joint with step downstream face 1；17 right bank of dam body is laid at second,
It is removed to 599.1m elevations by 600.0 original elevations, the dam crest long 3.5m of 2 notch, the wide 2.7m of groove after dismounting, after removing
The smooth-going structure of formation crosses the overlap joint of fish channel 8 with downstream flood season.
The withered phase that river checkdam is secreted in west crosses the smooth-going knot that barbed portion formation is removed in fish channel in dam body downstream face and dam crest
It is built on the basis of structure, and takes armored concrete to give strengthening reconstruction to concave dismounting notch and form, downstream face notch and dam crest
The steel bar concrete reinforcement depth of foundation of notch is respectively 0.3m and 0.2m.The downstream withered phase crosses the smooth-going of 6 bottom of fish channel, channel-style
Formula is concave, and the gradient is 30 °, length 12.0m, width 2.5m, depth 0.7m, top elevation 592.7m, bottom end elevation
586.0m；The dam crest withered phase crosses the smooth-going of 7 bottom of fish channel, and channel pattern is concave, and length 7.6m, width 2.5m, depth is
0.7m, top elevation 592.7m, bottom end elevation 592.0m.
The flood season that river checkdam is secreted in west crosses fish channel and is laid in dam body right bank, dam crest 2 remove barbed portion formed it is flat
Fish channel 8 is crossed along newly-built downstream flood season is overlapped on architecture basics, and 0.2m thickness armored concrete is taken to remove 2 concave of dam crest
Notch gives strengthening reconstruction and forms.
Downstream flood season crosses the smooth-going of 8 bottom of fish channel, and channel pattern is concave, and the gradient is 30 °, length 26.6m, and width is
2.5m, depth 0.7m, top elevation 600.0m, bottom end elevation 586.0m.Downstream flood season crosses 8 base foundation of fish channel and is equipped with 5
Locate anchor block 14, the 2.0m (being laid on riverbed), 7.5m (being laid on riverbed), 15.0m for being located at bottom end to top (are laid
On first order step), 19.0m (being laid on third level step), at 23.0m (being laid on level V step), 5 anchor blocks
14 height are respectively 1.5m, 4.3m, 6.5m, 3.5m, 2.0m, wherein being laid in the anchor block for carrying rest pond 10 on first order step
Along cross the length in fish direction be 1.5m, width 2.8m, it is 2.8m that remaining anchor block length, which is 1.0m, width,；Rectangle is set
At structure rest pond 10 1, being laid in downstream flood season crosses at 8 bottom end to the 15.0m on top of fish channel, 10 depth 0.5m of rest pond, hangs down
The straight width for crossing fish direction is 1.5m, is 0.8m along fish direction length is crossed.
Dam crest flood season crosses the smooth-going of 9 bottom of fish channel, and channel pattern is concave, and length 3.5m, width 2.5m, depth is
0.7m, top elevation 600.0m, bottom end elevation 599.3m.
West secretes river checkdam and crosses fish channel 7 with the setting dam crest withered phase by carrying out 2 ecological reconstruction of dam crest, reduces dam crest 2
Elevation to 592.0m, height of dam is reduced to 6.0m by original 14.0m, increases the natural flowing water section length 9.0km in Reservoir region, accounts for
The 81.8% of raw water reservoir backwater builds the natural river course flowing water habitat of more more suitable aquatile existence and breeding, makes west
Secrete river water blocking above and below the dam present " under dam before natural torrent river, base of dam deep water torrent river, dam deep water unhurried current river, library
The diversity aquatile habitat that the natural torrent river of tail or more " distributes alternately, has reached Ma Maya level-ones power station
The environmental benefit of engineering development " mainstream exploitation, tributary protection ", economic benefit, social benefit effectively unification and balance, realize
Heavenly Stems and Earthly Branches stream ecological functions coordinate sustainable development.
Claims (7)
1. a kind of low water head ecology crosses garth remodeling method, it is characterised in that：This method specifically includes following steps：
(A) dam body ecological reconstruction
A1, using miniature presplit blasting and concrete cutting, cutting method, that several spaced apart notches are opened up on dam body is logical
What road A, scalloped channels A were located at step downstream face is segmented into incline structure, being segmented into horizontal structure and be dam body positioned at dam crest
The 1/3-1/2 of height；
A2, using miniature presplit blasting and concrete cutting, cut dam crest of the method in dam body left bank or right bank or two sides and open up
Several scalloped channels B, scalloped channels B and scalloped channels A arranged for interval one by one；
(B) the withered phase crosses the setting of fish channel
B1, based on the scalloped channels A of step downstream face is segmented the smooth-going structure to be formed, notch is given using armored concrete
The downstream withered phase that U-shaped is formed with reinforcing crosses fish channel, and the downstream withered phase crosses base of dam pool phase of the fish channel end with dam body downstream
Even；
B2, based on the smooth-going structure of the scalloped channels A of dam crest segmentations, formation is reinforced to notch using armored concrete
The dam crest withered phase of U-shaped crosses fish channel, and the dam crest withered phase, which crosses fish channel and crosses fish channel with the downstream withered phase, to be connected；
(C) flood season crosses the setting of fish channel
C1, be arranged on step downstream face it is several fill out pier, fill out pier height and be sequentially increased and top is incline structure；
C2, fish channel is crossed filling out the downstream flood season that the setting of pier top portion is in tilted layout, fill out pier top end and open up and cross fish with the downstream flood season
The rest pond that channel is connected, downstream flood season cross fish channel low side and are connected with underwater bed；
C3, based on the scalloped channels B of dam crest, the dam crest to form U-shaped is reinforced to scalloped channels B using armored concrete
Flood season crosses fish channel, which, which crosses fish channel and cross fish channel with downstream flood season, is connected.
2. low water head ecology according to claim 1 crosses garth remodeling method, it is characterised in that：The scalloped channels A and
The width of scalloped channels B is 1.7-3.3m, and length≤30m of the angular sectors of scalloped channels A, angle of inclination is 25 ° -45 °.
3. low water head ecology according to claim 1 crosses garth remodeling method, it is characterised in that：The downstream withered phase crosses fish
The gradient in channel is 25 ° -45 °, length≤30m, width 1.5-3.0m, depth 0.5-1.5m.
4. low water head ecology according to claim 1 crosses garth remodeling method, it is characterised in that：The length in the rest pond
For 0.5-1m, width 1-2m, depth 0.3-0.6m.
5. low water head ecology according to claim 1 crosses garth remodeling method, it is characterised in that：The dam crest withered phase crosses fish
The depth in channel is 0.5-1.5m.
6. low water head ecology according to claim 1 crosses garth remodeling method, it is characterised in that：The downstream flood season crosses fish
The gradient in channel is 25 ° -45 °, length≤50m, width 1.5-3m, depth 0.5-1.5m.
7. a kind of structure for being crossed garth remodeling method using claim 1-2 any one of them low water head ecologies, feature are existed
In：The structure includes dam body, and dam body is divided into step downstream face, dam crest and slope upstream face, and dam body bottom end is dam body foundation, dam body
Basic downstream is equipped with base of dam pool and underwater bed, offers several scalloped channels A in dam body, be provided in scalloped channels A with
Its downstream withered phase to match crosses fish channel and the dam crest withered phase crosses fish channel, and the dam crest in dam body left bank or right bank or two sides opens up
Being provided with dam crest flood season in scalloped channels B, scalloped channels B crosses fish channel, and dam crest flood season crosses fish passages downstream and is connected with downstream flood
Phase crosses fish channel, which crosses fish channel and be supported by several piers of filling out being arranged in step downstream face.
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| CN110396991B (en) * | 2019-07-08 | 2024-03-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Small-sized dam with bottom grid barrier with fish passing function |
| CN111651709B (en) * | 2020-06-01 | 2021-03-12 | 云南大学 | Method for replacing and repairing branch dam-splitting habitat in main and branch hydroelectric development basin |
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| US20030219311A1 (en) * | 2002-03-15 | 2003-11-27 | Hildstad Tod A. | Bottom fed screened water diversion apparatus |
| CN205000309U (en) * | 2015-09-30 | 2016-01-27 | 中国电建集团贵阳勘测设计研究院有限公司 | Cross fish device suitable for low water head overfall dam |
| CN205205791U (en) * | 2015-04-17 | 2016-05-04 | 中国电建集团贵阳勘测设计研究院有限公司 | Fish device excessively of water conservancy water and electricity dam |
-
2016
- 2016-07-14 CN CN201610559644.3A patent/CN106120677B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030219311A1 (en) * | 2002-03-15 | 2003-11-27 | Hildstad Tod A. | Bottom fed screened water diversion apparatus |
| CN205205791U (en) * | 2015-04-17 | 2016-05-04 | 中国电建集团贵阳勘测设计研究院有限公司 | Fish device excessively of water conservancy water and electricity dam |
| CN205000309U (en) * | 2015-09-30 | 2016-01-27 | 中国电建集团贵阳勘测设计研究院有限公司 | Cross fish device suitable for low water head overfall dam |
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