CN106120677A - Low-water-head ecological fish-passing dam transformation method and structure - Google Patents
Low-water-head ecological fish-passing dam transformation method and structure Download PDFInfo
- Publication number
- CN106120677A CN106120677A CN201610559644.3A CN201610559644A CN106120677A CN 106120677 A CN106120677 A CN 106120677A CN 201610559644 A CN201610559644 A CN 201610559644A CN 106120677 A CN106120677 A CN 106120677A
- Authority
- CN
- China
- Prior art keywords
- dam
- downstream
- fish passage
- crosses
- channels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000011426 transformation method Methods 0.000 title abstract 2
- 241000251468 Actinopterygii Species 0.000 claims abstract description 92
- 238000000034 method Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 238000007634 remodeling Methods 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000005422 blasting Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 230000011218 segmentation Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000009466 transformation Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 description 19
- 230000008901 benefit Effects 0.000 description 13
- 230000006870 function Effects 0.000 description 13
- 238000011161 development Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 9
- 239000011159 matrix material Substances 0.000 description 7
- 241000252233 Cyprinus carpio Species 0.000 description 4
- 210000001217 buttock Anatomy 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 230000001447 compensatory effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 206010016807 Fluid retention Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000269799 Perca fluviatilis Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000008619 Xingren Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002934 diuretic Substances 0.000 description 1
- 230000001882 diuretic effect Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
- E02B8/085—Devices allowing fish migration, e.g. fish traps
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Revetment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
Abstract
The invention discloses a low-water-head ecological fish passing dam transformation method and a structure, the method comprises the steps of dam body ecological transformation, dry-period fish passing channel arrangement, flood-period fish passing channel arrangement and the like, the structure comprises a dam body, the bottom end of the dam body is a dam body foundation, a plurality of notch channels A are arranged in the dam body, downstream dry-period fish passing channels and dam top dry-period fish passing channels matched with the notch channels A are arranged in the notch channels A, notch channels B are arranged at the dam top of the left bank or the right bank or both banks of the dam body, the dam top fish passing channels are arranged in the notch channels B, and the downstream of the dam top flood-period fish passing channels are connected with the downstream flood-period fish passing channels. The method not only partially removes the dam body structure of the small dam to a certain extent and restores the ecological environment protection function of the developed protected tributaries, but also fully utilizes the existing ecological environment protection function value of the low-head small dam with the built dam height of the developed protected tributaries being less than 20 m.
Description
Technical field
The present invention relates to a kind of low water head ecology and cross garth remodeling method and structure, belong to Hydraulic and Hydro-Power Engineering environment
Resist technology field.
Background technology
" master stream exploitation, tributary protection " is 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 " dodge, slow down, compensate and rebuild "
Work, the essence of tributary protection is with habitat, replacement master stream, habitat, tributary, affected water in the exploitation of compensatory protection master stream
Biology, and balanced growth and protection between master stream and tributary, habitat, tributary substitutes as compensatory protective measure, protects with it
Protect the advantages such as effectiveness, technical feasibility, economic rationality, environment and society can accept, can be to the ecosystem of river Heavenly Stems and Earthly Branches stream
System multiformity effectively maintains, it is achieved water resources and hydropower development and the doulbe-sides' victory of environmental conservation.
What tributary protection was that the various unfavorable eco-environmental impact causing master stream exploration project compensates most effective arranges
Executing, to some in master stream is developed for affected aquatile rare, peculiar, tributary protection is probably and carries out it just
Ground protection and the fry for artificial enhancement releasing provide the approach most viable, maximally effective of suitable habitats.But from proposing tributary
The concept of protection is embodied as to it, and owing to lacking Administrative support and being not carried out power, and the imperfection of compensation mechanism makes to prop up
The reasons such as stream protection power shortage, cause " master stream exploitation, tributary protection " to be difficult to environmental benefit, economic benefit, society's effect
The most unified and the balance of benefit, in water conservancy and hydropower exploitation, the Eco-environmental Protection Works of " master stream exploitation, tributary protection " is actual holds
Row there is also a series of query and a difficult problem, technology maturation, protected effect be preferable and convenient to operate, the example implemented especially
Lack.
For that carry out water resources and hydropower development but need to carry out the tributary of aquatic life habitat protection, due to it
The problem of the aspects such as the environment that relates to, economy, society is more complicated, about its Reasonable Protection, repairs, rebuilds and compensation etc. is ground
Study carefully, such as remove some the built job facilities on the protected tributary developed, or build some environmental protection installations to change
Kind water quality, regulate Eco-hydrological Processes, build suitable habitat, be pulled through fish passage etc., with realize Heavenly Stems and Earthly Branches stream ecological functions can
The research work of the aspects such as sustainable development is still in the blank stage.
Therefore, according to developing protected tributary " master stream exploitation, tributary protection " aquatic life habitat protection work
" remove existing water conservancy and hydropower facility " and " newly-built Function in Environmental facility " composite request, combine from environment, economic and social etc.
Conjunction angle is set out, novelty carry out the built engineering measure developing on protected tributary, as drop dam, overflow dam, Yong Shui
The Function in Environmental transformation of the height of dam 20m such as dam, overflow dam and following low water head Hydraulic and Hydro-Power Engineering facility, with to protected
Tributary carries out reparation and the reconstruction of ecological environmental protection function, draws aquatile survival activity space, logical protected tributary, and seeks
Make suitable aquatile and substitute habitat, it is achieved 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.
Summary of the invention
It is an object of the invention to: perch according to developing protected tributary " master stream exploitation, tributary protection " aquatile
" removing built water conservancy and hydropower facility " and " newly-built Function in Environmental facility " composite request of ground protection work, from environment, warp
The comprehensive angle such as Ji and society are set out, it is provided that a kind of low water head ecology crosses garth remodeling method and structure, can be to a certain degree
Upper part is removed and has been developed height of dam 20m such as built drop dam, protected tributary, overflow dam, harmony dam, overflow dam and following, dam
Top can the low water head small-sized dam dam structure of overflow flood discharge, give ecological environmental protection function to developing protected tributary
Repair, the existing ecological ring having developed protected tributary built height of dam 20m and the small-sized dam of following low water head can be made full use of again
Border defencive function is worth, and transforms it from environmental conservation angle, little at the not exclusively former height of dam 20m of destruction and following low water head
Under type dam upstream and downstream longtime running on the basis of established aquatile habitat, the aquatile existence of logical protected tributary is drawn to live
Dynamic space, and build suitable aquatile and substitute habitat, it is to avoid height of dam 20m that protected tributary is built and following low water head water
The both destruction former low water head Hydraulic and Hydro-Power Engineering facility upstream and downstream that the direct global blowup of diuretic electrical engineering facility is removed has formed water
Raw Biotope Landscape, forms again new blast working environmental destruction and pollution, it is achieved that " master stream exploitation, tributary protection " environment
Benefit, economic benefit, the most 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 the method specifically includes following steps:
(A) dam body ecological reconstruction
A1, use miniature presplit blasting and concrete cutting, the method that cuts offer on dam body some spaced apart lack
What mouthful passage A, scalloped channels A were positioned at step downstream face is segmented into incline structure, is positioned at being segmented into horizontal structure and being of dam crest
The 1/3-1/2 of dam body height；
A2, use miniature presplit blasting and concrete cutting, the method that cuts at dam body left bank or right bank or the dam crest of two sides
Offer some scalloped channels B, scalloped channels B and scalloped channels A and be spaced layout one by one；
(B) the withered phase crosses the setting of fish passage
B1, based on the smooth-going structure that the scalloped channels A segmentation of step downstream face is formed, use armored concrete to lacking
Mouth is reinforced formation U-shaped the downstream withered phase cross fish passage, it is deep with the base of dam in dam body downstream that this downstream withered phase crosses fish channel end
Pool is connected；
B2, based on the smooth-going structure of the scalloped channels A segmentation of dam crest, use armored concrete breach is reinforced
The dam crest withered phase forming U-shaped crosses fish passage, and this dam crest withered phase spends the fish passage phase withered with downstream and crosses fish passage and be connected；
(C) cross fish passage flood season to arrange
C1, step downstream face is arranged and some fills out pier, fill out pier height and increase successively and top is incline structure；
C2, the downstream being in tilted layout is set crosses fish passage flood season filling out pier top portion, fill out pier top end and offer and this downstream flood season
Crossing the rest pond that fish passage is connected, downstream is crossed fish passage low side and be connected with underwater bed flood season；
C3, based on the scalloped channels B of dam crest, use armored concrete that scalloped channels B is reinforced formation U-shaped
Dam crest crosses fish passage flood season, and this dam crest is crossed fish passage flood season and crossed fish passage flood season with downstream and be connected.
The width of described 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 is 25 °-45 °.
It is 25 °-45 ° that the described downstream withered phase crosses the gradient of fish passage, length≤30m, and width is 1.5-3.0m, and the degree of depth is
0.5-1.5m。
The a length of 0.5-1m in described rest pond, width are 1-2m, the degree of depth is 0.3-0.6m.
It is 0.5-1.5m that the described dam crest withered phase crosses the degree of depth of fish passage.
It is 25 °-45 ° that the gradient of fish passage is crossed in described downstream flood season, length≤50m, and width is 1.5-3m, and the degree of depth is 0.5-
1.5m。
A kind of low water head ecology crosses garth reconstruction structure, this structure include dam body, dam body be divided into step downstream face, dam crest and
Slope upstream face, dam body bottom is dam body foundation, and dam body foundation downstream is provided with base of dam pool and underwater bed, offers in dam body
Some scalloped channels A, being provided with the downstream matched with it withered phase in scalloped channels A crosses fish passage and the dam crest withered phase crosses fish and leads to
Road, the dam crest in dam body left bank or right bank or two sides offers scalloped channels B, is provided with dam crest and crosses fish flood season and lead in scalloped channels B
Road, dam crest crosses fish passages downstream flood season and connects and have downstream to cross fish passage flood season, and flood season is crossed fish passage by some settings in this downstream
Pier of filling out at step downstream face is supported.
The invention has the beneficial effects as follows:
Compared with prior art, the low water head ecology that the present invention provides crosses garth remodeling method and structure, according to developing
" removing existing water conservancy and hydropower facility " of protected tributary " master stream exploitation, tributary protection " aquatic life habitat protection work with
" newly-built environment-friendly function facility " composite request, partial demolition has developed the drop that protected tributary is built the most to a certain extent
The following low water head of the height of dam 20m small-sized dam dam structures such as dam, overflow dam, harmony dam, overflow dam, to developing protected tributary
Give the reparation of ecological environmental protection function, make full use of again that to have developed the protected tributary built height of dam following low water head of 20m little
The existing ecological environmental protection function value of type dam, transforms it from environmental conservation angle, is not exclusively destroying former dam
Under high below 20m low water head miniature water above and below the dam longtime running on the basis of established aquatile habitat, draw again logical guarantor
Protect aquatile survival activity space, tributary, and build suitable aquatile replacement habitat, reached Hydraulic and Hydro-Power Engineering and opened
Send out the environmental benefit of " master stream exploitation, tributary protection ", economic benefit, social benefit effectively unification and balance, it is achieved that Heavenly Stems and Earthly Branches stream
Ecological functions coordinate sustainable development.
Accompanying drawing explanation
Fig. 1 is that in the present invention, low water head ecology crosses garth scalloped channels cutting structure chart；
Fig. 2 is the top view that in the present invention, low water head ecology crosses garth；
Fig. 3 is the A-A sectional view of Fig. 2；
Fig. 4 is the B-B sectional view of Fig. 2；
In figure: 1-step downstream face；2-dam crest；3-slope upstream face；4-base of dam pool；5-underwater bed；6-downstream is withered
Phase crosses fish passage；The 7-dam crest withered phase crosses fish passage；Flood season is crossed fish passage in 8-downstream；9-dam crest crosses fish passage flood season；10-has a rest
Pond；11-dam body foundation；12-scalloped channels A；13-scalloped channels B；14-anchor block；The former reservoir level of 15-；Reservoir after 16-transformation
Water level, 17-dam body.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme is described further, but required protection domain
It is not limited to described；
A kind of low water head ecology that the present invention provides crosses garth remodeling method, and the method specifically includes following steps:
(A) dam body ecological reconstruction
A1, use miniature presplit blasting and concrete cutting, the method that cuts offer on dam body some spaced apart lack
What mouthful passage A, scalloped channels A were positioned at step downstream face is segmented into incline structure, is positioned at being segmented into horizontal structure and being of dam crest
The 1/3-1/2 of dam body height；
A2, use miniature presplit blasting and concrete cutting, the method that cuts at dam body left bank or right bank or the dam crest of two sides
Offer some scalloped channels B, scalloped channels B and scalloped channels A and be spaced layout one by one；
(B) the withered phase crosses the setting of fish passage
B1, based on the smooth-going structure that the scalloped channels A segmentation of step downstream face is formed, use armored concrete to lacking
Mouth is reinforced formation U-shaped the downstream withered phase cross fish passage, it is deep with the base of dam in dam body downstream that this downstream withered phase crosses fish channel end
Pool is connected；
B2, based on the smooth-going structure of the scalloped channels A segmentation of dam crest, use armored concrete breach is reinforced
The dam crest withered phase forming U-shaped crosses fish passage, and this dam crest withered phase spends the fish passage phase withered with downstream and crosses fish passage and be connected；
(C) cross fish passage flood season to arrange
C1, step downstream face is arranged and some fills out pier, fill out pier height and increase successively and top is incline structure；
C2, the downstream being in tilted layout is set crosses fish passage flood season filling out pier top portion, fill out pier top end and offer and this downstream flood season
Crossing the rest pond that fish passage is connected, downstream is crossed fish passage low side and be connected with underwater bed flood season；
C3, based on the scalloped channels B of dam crest, use armored concrete that scalloped channels B is reinforced formation U-shaped
Dam crest crosses fish passage flood season, and this dam crest is crossed fish passage flood season and crossed fish passage flood season with downstream and be connected.
The width of described 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 is 25 °-45 °.
It is 25 °-45 ° that the described downstream withered phase crosses the gradient of fish passage, length≤30m, and width is 1.5-3.0m, and the degree of depth is
0.5-1.5m。
The a length of 0.5-1m in described rest pond, width are 1-2m, the degree of depth is 0.3-0.6m.
It is 0.5-1.5m that the described dam crest withered phase crosses the degree of depth of fish passage.
It is 25 °-45 ° that the gradient of fish passage is crossed in described downstream flood season, length≤50m, and width is 1.5-3m, and the degree of depth is 0.5-
1.5m。
Embodiment:
(1) project profile
Ma Maya one-level power station is big (2) the type engineerings such as II, develops for dam-type, and its dam site is positioned at Guanling fauna and Xingren
The northern dish Jiang Ganliu of county's intersection, dam site above water catching area 16068.0km2, average annual flow 309.0m at dam site3/
s；Engineering development task is taken second place based on generating, shipping, takes into account guarantee downstream ecology environment, landscape water；The normal water-retention of reservoir
Position 585.0m, corresponding storage capacity 1.365 hundred million m3, level of dead water 570.0m, regulate storage capacity 0.732 hundred million m3, there is day regulation performance；Power station
Installed capacity 558MW, it is ensured that exert oneself 97MW, Mean annual energy production 15.92 hundred million kW h；Main structures includes grinding coagulation
Gravity dam, diversion system, left bank underground power house and navigation structure composition.
(2) aquatic life habitat protection object
Ma Maya one-level Hydropower Station Construction relates to section has Fish mesh 9 section 9 subfamily 35 to belong to 48 kinds, wherein has " China
Animals on the brink of extinction Red Data Book Fish " Fish of easily endangering: leaf knot fish, black former Cyprinus carpio and long buttockss etc. 3 kinds, Pearl River system Endemic fish leaf is tied
Fish, black former Cyprinus carpio, long buttocks, Met roller and long-tail etc. 5 kinds.Leaf knot fish, black former Cyprinus carpio, long buttocks, Met roller, long-tail etc. 5 kinds
Fish all have distribution in Ma Maya one-level Dam Site upstream and downstream, and have short distance migration phenomenon, and therefore, engineering emphasis will
Above Fish are as " master stream exploitation, tributary protection " aquatic life habitat protection object.
(3) Xi Mi river, storehouse tail tributary low water head checkdam ecological reconstruction situation (as Figure 1-4)
West is secreted river low water head checkdam and is positioned at more than Xi Mi river, tail right bank tributary, storehouse, Ma Maya one-level power station remittance mouth
100.0m, checkdam height of dam 14.0m, for radial-flow type, dam crest can overflow flood discharge, crest elevation 600.0, elevation 586.0m at the bottom of dam.
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, and every one-level step is high
2.0m, totally 7 grades of steps, the step entirety gradient is 45 °；Strong point is had to reach 8.0m, bosom below checkdam base of dam bed elevation
Pool is washed away in the drop reaching 1.5m；Checkdam dam length 33.0m, dam crest thickness 3.0m, dam base thickness 18.0m；Checkdam reservoir area backwater
11.0km, reservoir level is throughout the year at 600.0m, and reservoir maximum water depth reaches 13.5m.
According to Environmental Protection Department to Ma Maya one-level power station " master stream exploitation, tributary protection " aquatic life habitat protection
Requirement, Ma Maya one-level power station implements west and secretes river checkdam ecology and cross fish improvement project, and local government also promises to undertake not in west
Secrete river and carry out hydroelectric development construction, to meet 5 kinds of straddling fish stocks guarantors such as leaf knot fish, black former Cyprinus carpio, long buttocks, Met roller, long-tail
Protect requirement.
It is matrix that the scalloped channels pattern of river checkdam dam body ecological reconstruction is secreted in west, takes miniature presplit blasting and coagulation
Soil cuts, cuts construction technology, is removed its stepped ramp type drop bank downstream face and dam crest.Dam body downstream face breach is removed
At 1, being laid at river course 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 the long 12.0m of smooth-going structure of barbed portion, and recess width is 2.7m.
Dam crest 2 breach of dam body 17 is removed at 2, is laid at river course position of center line at first, high by original 600.0
Journey is removed to 591.8m elevation, the dam crest 2 long 7.6m of breach, the groove width 2.7m after dismounting, its 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；Dam body 17 right bank it is laid at second,
Being removed to 599.1m elevation by 600.0 original elevations, the dam crest 2 long 3.5m of breach, the groove width 2.7m after dismounting, after it is removed
The smooth-going structure formed and downstream are crossed fish passage 8 and overlap flood seasons.
West is secreted withered phase of river checkdam and is crossed fish passage and remove, at dam body downstream face and dam crest, the smooth-going knot that barbed portion is formed
Build on the basis of structure, and take armored concrete that matrix is removed breach to give strengthening reconstruction and form, downstream face breach and dam crest
The steel bar concrete reinforcement depth of foundation of breach is respectively 0.3m and 0.2m.The downstream withered phase crosses and smoothes out bottom fish passage 6, channel-style
Formula is matrix, and the gradient is 30 °, a length of 12.0m, and width is 2.5m, and the degree of depth is 0.7m, top elevation 592.7m, bottom elevation
586.0m；The dam crest withered phase crosses and smoothes out bottom fish passage 7, and passage pattern is matrix, a length of 7.6m, and width is 2.5m, and the degree of depth is
0.7m, top elevation 592.7m, bottom elevation 592.0m.
West is secreted and flood season of river checkdam is crossed fish passage and be laid in dam body right bank, dam crest 2 remove that barbed portion formed flat
Cross fish passage 8 flood season along overlapping newly-built downstream on architecture basics, and take 0.2m thickness armored concrete that dam crest 2 matrix is removed
Breach gives strengthening reconstruction and forms.
Downstream is crossed and smooth out bottom fish passage 8 flood season, and passage pattern is matrix, and the gradient is 30 °, a length of 26.6m, and width is
2.5m, the degree of depth is 0.7m, top elevation 600.0m, bottom elevation 586.0m.Downstream is crossed fish passage 8 base foundation and be provided with 5 flood season
Place's anchor block 14, lays respectively at the 2.0m (being laid on riverbed) on bottom to top, 7.5m (being laid on riverbed), 15.0m (laying
On first order step), 19.0m (being laid on third level step), 23.0m (being laid on level V step) place, 5 anchor blocks
14 height are respectively 1.5m, 4.3m, 6.5m, 3.5m, 2.0m, are wherein laid in the anchor block with rest pond 10 on first order step
Being 2.8m along a length of 1.5m in fish direction, width excessively, remaining anchor block length is 1.0m, width is 2.8m；Rectangle is set
At structure rest pond 10 1, it is laid in downstream and crosses fish passage 8 bottom flood season at the 15.0m on top, the deep 0.5m in rest pond 10, hangs down
The straight width crossing fish direction is 1.5m, along crossing a length of 0.8m in fish direction.
Dam crest is crossed and smooth out bottom fish passage 9 flood season, and passage pattern is matrix, a length of 3.5m, and width is 2.5m, and the degree of depth is
0.7m, top elevation 600.0m, bottom elevation 599.3m.
River checkdam is secreted by carrying out dam crest 2 ecological reconstruction and arranging the dam crest withered phase and cross fish passage 7 in west, reduces dam crest 2
Elevation is reduced to 6.0m to 592.0m, height of dam by original 14.0m, increases natural flowing water section, Reservoir region length 9.0km, accounts for
The 81.8% of former backwater of reservoir, builds more many suitable aquatile existence and the natural river course flowing water habitat of breeding, makes west
Secrete river checkdam upstream and downstream present " under dam before natural torrent river course, base of dam deep water torrent river course, dam deep water unhurried current river course, storehouse
Tail and above natural torrent river course " the multiformity aquatile habitat that distributes alternately, reach Ma Maya one-level power station
Environmental benefit, economic benefit, social benefit effectively unification and the balance of engineering development " master stream exploitation, tributary protection ", it is achieved that
Heavenly Stems and Earthly Branches stream ecological functions coordinate sustainable development.
Claims (7)
1. a low water head ecology crosses garth remodeling method, it is characterised in that: the method specifically includes following steps:
(A) dam body ecological reconstruction
A1, use miniature presplit blasting and concrete cutting, the method that cuts offer on dam body some spaced apart breach lead to
What road A, scalloped channels A were positioned at step downstream face is segmented into incline structure, and be positioned at dam crest is segmented into horizontal structure and for dam body
The 1/3-1/2 of height；
A2, use miniature presplit blasting and concrete cutting, cut the method dam crest in dam body left bank or right bank or two sides and offer
Some scalloped channels B, scalloped channels B and scalloped channels A are spaced layout one by one；
(B) the withered phase crosses the setting of fish passage
B1, based on the smooth-going structure that the scalloped channels A segmentation of step downstream face is formed, use armored concrete that breach is given
The downstream withered phase forming U-shaped with reinforcing crosses fish passage, and this downstream withered phase crosses the base of dam pool phase of fish channel end and dam body downstream
Even；
B2, based on the smooth-going structure of the scalloped channels A segmentation of dam crest, use armored concrete breach is reinforced formation
The dam crest withered phase of U-shaped crosses fish passage, and this dam crest withered phase spends the fish passage phase withered with downstream and crosses fish passage and be connected；
(C) cross fish passage flood season to arrange
C1, step downstream face is arranged and some fills out pier, fill out pier height and increase successively and top is incline structure；
C2, the downstream being in tilted layout is set crosses fish passage flood season filling out pier top portion, fill out pier top end and offer and cross fish flood season with this downstream
The rest pond that passage is connected, downstream is crossed fish passage low side and be connected with underwater bed flood season；
C3, based on the scalloped channels B of dam crest, use armored concrete scalloped channels B is reinforced formation U-shaped dam crest
Crossing fish passage flood season, this dam crest is crossed fish passage flood season and is crossed fish passage flood season with downstream and be connected.
Low water head ecology the most according to claim 1 crosses garth remodeling method, it is characterised in that: described scalloped channels A and
The width of scalloped channels B is 1.7-3.3m, the length≤30m of the angular sectors of scalloped channels A, and angle of inclination is 25 °-45 °.
3. cross garth remodeling method according to the low water head ecology described in claim 1-2, it is characterised in that: the described downstream withered phase
The gradient crossing fish passage is 25 °-45 °, length≤30m, and width is 1.5-3.0m, and the degree of depth is 0.5-1.5m.
4. cross garth remodeling method according to the low water head ecology described in claim 1-2, it is characterised in that: the length in described rest pond
Degree is 0.5-1m, width is 1-2m, the degree of depth is 0.3-0.6m.
5. cross garth remodeling method according to the low water head ecology described in claim 1-2, it is characterised in that: mistake of described dam crest withered phase
The degree of depth of fish passage is 0.5-1.5m.
6. cross garth remodeling method according to the low water head ecology described in claim 1-2, it is characterised in that: described downstream mistake in flood season
The gradient of fish passage is 25 °-45 °, length≤50m, and width is 1.5-3m, and the degree of depth is 0.5-1.5m.
7. one kind uses the structure that the low water head ecology as described in claim 1-2 crosses garth remodeling method, it is characterised in that: should
Structure includes that dam body, dam body are divided into step downstream face, dam crest and slope upstream face, and dam body bottom is dam body foundation, dam body foundation
Downstream is provided with base of dam pool and underwater bed, offers some scalloped channels A, be provided with and its phase in scalloped channels A in dam body
The downstream withered phase of coupling crosses fish passage and the dam crest withered phase crosses fish passage, and the dam crest in dam body left bank or right bank or two sides offers breach
Passage B, is provided with dam crest and crosses fish passage flood season in scalloped channels B, dam crest is crossed fish passages downstream flood season and connected and have downstream mistake in flood season
Fish passage, this downstream is crossed fish passage and be supported by some piers of filling out being arranged on step downstream face flood season.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610559644.3A CN106120677B (en) | 2016-07-14 | 2016-07-14 | Low-water-head ecological fish-passing dam transformation method and structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610559644.3A CN106120677B (en) | 2016-07-14 | 2016-07-14 | Low-water-head ecological fish-passing dam transformation method and structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106120677A true CN106120677A (en) | 2016-11-16 |
| CN106120677B CN106120677B (en) | 2018-09-07 |
Family
ID=57282799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610559644.3A Active CN106120677B (en) | 2016-07-14 | 2016-07-14 | Low-water-head ecological fish-passing dam transformation method and structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106120677B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396991A (en) * | 2019-07-08 | 2019-11-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Bottom lattice fence type small dam 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7594779B2 (en) * | 2002-03-15 | 2009-09-29 | Farmers Irrigation District | 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 of crossing 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 | Fish passing device suitable for low-water-head overflow dam |
-
2016
- 2016-07-14 CN CN201610559644.3A patent/CN106120677B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396991A (en) * | 2019-07-08 | 2019-11-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Bottom lattice fence type small dam with fish passing function |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106120677B (en) | 2018-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104634325A (en) | Prototype observation method for reservoir water temperature change rule | |
| CN103290805A (en) | Method for regulating river water by utilizing sea power | |
| CN105464058B (en) | Tunnel formula imitates nature fish pass | |
| CN205804300U (en) | Low-water-head ecological fish-crossing dam reconstruction structure | |
| Shin et al. | The four major rivers restoration project in South Korea | |
| CN106120677B (en) | Low-water-head ecological fish-passing dam transformation method and structure | |
| CN203373809U (en) | Vertical well type laminated water taking structure | |
| CN104179624A (en) | Current-driven ultralarge impeller power generation method and river dredging method | |
| CN101831893B (en) | Underground and ground reservoir storage cycle generating system for artificial underground river | |
| CN201649042U (en) | Water storage structure of artificial underground river | |
| CN100383343C (en) | Environment protection type multipurpose flood-discharging and water-discharging riverbed | |
| Bobat | The triple conflicts in hydro projects: Energy, economy and environment | |
| Zhang | Weighing the pros and cons: Transformation of angle of view for Three Gorges Dam | |
| Nakagawa et al. | The Shichika Canal of Japan since the twelfth century | |
| Stacey et al. | Water resources development in the Cauvery river basin, India | |
| Kolandasamy et al. | Water management practiced by 1000 years old Chozha dynasty in Tamil Nadu, India–A review | |
| Hopkins | Dee regulation reservoirs | |
| Wang et al. | Hydrology and Water Resources | |
| Silva et al. | Environmental flow in Sri Lanka: ancient anicuts versus modern dams | |
| Deng et al. | The protection and development of historic Lougang water resource features along Lake Tai | |
| Chen et al. | Regulation, Development, and Utilization of the Yangtze River | |
| Dao | History of Water Conservancy in China | |
| CN201649049U (en) | Water storing and power generating system of artificial underground river | |
| Koenig et al. | Ancient water supply system of the old town of Lijiang, Yunnan Province, China | |
| Kovalchuk | Tereble-Rikske reservoir: an example of magnificent engineering approach with catastrophic ecological consequences |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |