CN108677892A - Diversion tunnel working tunnel is used as reconstruction structure of the ecology for water hole - Google Patents
Diversion tunnel working tunnel is used as reconstruction structure of the ecology for water hole Download PDFInfo
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- CN108677892A CN108677892A CN201810840336.7A CN201810840336A CN108677892A CN 108677892 A CN108677892 A CN 108677892A CN 201810840336 A CN201810840336 A CN 201810840336A CN 108677892 A CN108677892 A CN 108677892A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000010276 construction Methods 0.000 claims abstract description 48
- 230000007704 transition Effects 0.000 claims abstract description 21
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000008400 supply water Substances 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 241000282693 Cercopithecidae Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 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
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Disclosed by the invention is a kind of reconstruction structure that diversion tunnel working tunnel is used as ecology for water hole in hydraulic and hydroelectric engineering field, including diversion tunnel and upper working tunnel and the lower working tunnel in diversion tunnel side are set, the outlet of wherein upper working tunnel and lower working tunnel is connected to diversion tunnel, the outlet end of upper working tunnel is connected by arc-shaped transition with diversion tunnel, the radius of the arc-shaped transition section is more than the hole diameter of 5 times or more working tunnels, and is equipped with backwater gate in the junction of the upper working tunnel and diversion tunnel.The beneficial effects of the invention are as follows：Special ecology is eliminated for water hole, has saved cost and duration；In the construction time of diversion tunnel, access tunnel that working tunnel is constructed as diversion tunnel；The construction time of dam blocks plug and backwater gate by setting, ensure that the normal diversion function of diversion tunnel；The dam water storage phase, solve that the lock water storage phase under high earth and rockfill dam diversion tunnel does not stop and reservoir level rises uppity problem.
Description
Technical field
The present invention relates to hydraulic and hydroelectric engineering fields more particularly to a kind of diversion tunnel working tunnel by high earth and rockfill dam to be transformed
For the reconstruction structure in ecological water supply hole.
Background technology
Currently, the extra-high earth and rockfill dam hydroelectric project of more large sizes is built in Southwestern China region high mountain and steep gorge area, such as double Jiangkou, two
River mouth, long sill may, monkey rock etc., the construction diversion of these engineerings is all in such a way that disconnected+diversion tunnel aerial drainage is once blocked in cofferdam.
High earth-rock works are large-scale, and the construction period is very long, and lower lock water storage difficulty is high, involves numerous factors, have
There is following difficult point：Downstream does not stop, and letdown flow needs the requirement for meeting ecological water supply flow；The water storage phase needs to control on water level
Lifting speed is to ensure the safety of earth and rockfill dam dam body.Expire for water hole currently, high earth and rockfill dam is typically necessary specially one ecology of setting
Sufficient above-mentioned requirements.However, specially one ecology of setting is big for the project scale in water hole, investment is high, and the construction period is long.
Invention content
To overcome existing high earth and rockfill dam to need to be arranged special ecology for water hole, cause of high cost, long construction period etc. is no
Foot, the technical problem to be solved by the present invention is to：There is provided it is a kind of diversion tunnel working tunnel can be transformed, together with diversion tunnel
Reconstruction structure as the hole that ecology supplies water.
The technical solution adopted by the present invention to solve the technical problems is：
Diversion tunnel working tunnel is used as reconstruction structure of the ecology for water hole, including diversion tunnel and is arranged in diversion tunnel side
Working tunnel, the working tunnel are divided into working tunnel and lower working tunnel, wherein the entrance of upper working tunnel connects with river
Logical, outlet is connected to diversion tunnel, and the entrance of lower working tunnel is connected with upper working tunnel, is exported and is connected to diversion tunnel, it is described on
One end that working tunnel is connected with diversion tunnel be equipped with gate, gate upstream side be equipped with arc-shaped door lock chamber, the lower working tunnel with
The junction of diversion tunnel, which is equipped with, blocks plug, and the junction of the upper working tunnel and lower working tunnel is equipped with connection plug.
Further, the outlet end of the upper working tunnel is connected by arc-shaped transition with diversion tunnel.
Further, the radius of the arc-shaped transition section is more than the hole diameter of 5 times or more working tunnels, corner is less than 60 °.
Further, the entrance of the lower working tunnel is connected with the arc-shaped transition section of upper working tunnel, the connection
The upstream face of plug is the cambered surface to match with the arc-shaped transition section of upper working tunnel.
Further, being equipped with liner structure section, the gate and arc door lock in the outlet end of the upper working tunnel
Room is arranged in liner structure section, and the described one end of liner structure section far from diversion tunnel is equipped with gradual transition section.
Ecology is used as the construction method of the reconstruction structure in water hole to above-mentioned diversion tunnel working tunnel, is included the following steps：
A, the access tunnel constructed as diversion tunnel in diversion tunnel construction time, the above working tunnel and lower working tunnel；
B, after the completion of diversion tunnel construction, in the outlet end of lower working tunnel, setting blocks plug, in going out for upper working tunnel
Gate is arranged in mouth end；
C, the dam construction phase first blocks upper working tunnel with gate, using diversion tunnel overcurrent river water, then builds dam and encloses
Weir carries out dam construction；
D, after the completion of dam construction, the lock water storage phase under diversion tunnel first removes the gate in upper working tunnel, then passes through tune
Arc-shaped door lock chamber on section in working tunnel carries out overcurrent to make ecology supply water through upper working tunnel to diversion tunnel, while can be to water
Reservoir level rising is controlled；
E, after dam reaches water storage requirement, the arc-shaped door lock chamber in closing in working tunnel stops supplying water, and is then applied upper
Permanent plug is set between the arc-shaped door lock chamber and diversion tunnel in work branch hole, and reconstruction is completed.
Further, in the dry season during carrying out water using diversion tunnel, enclose in the entrance setting of upper working tunnel
Then weir reconstructs upper working tunnel, include the junction of upper working tunnel and lower working tunnel setting connection plug,
Arc-shaped door lock chamber and the construction of the transition of lining cutting section, so that upper working tunnel meets the overcurrent requirement that ecology supplies water.
The beneficial effects of the invention are as follows：
1, it is ecological water supply hole by reconstructing working tunnel, eliminates the engineering for resetting an ecology for water hole,
It is with good economic efficiency, and the duration is greatly shortened；
2, so that working tunnel different times have different functions, the construction time of diversion tunnel, working tunnel is as water conservancy diversion
The access tunnel of hole construction；The construction time of dam blocks plug and backwater gate by setting, ensure that the normal water conservancy diversion of diversion tunnel
Function；Dam water storage phase, the lock water storage phase under high earth and rockfill dam diversion tunnel that preferably resolves do not stop, and meet downstream ecology flow
It is required that while solving the uppity problem of high earth and rockfill dam reservoir level rising；
3, the characteristics of being gradually transformed, making full use of different times high rock fill dam construction water conservancy diversion, subsequent adaptation is in previous transformation
On the basis of carry out, can greatly alleviate the duration pressure of construction in later period in this way, shorten the construction period of critical circuits.
Description of the drawings
Fig. 1 is diversion tunnel construction time structural schematic diagram.
Fig. 2 is dam construction phase structural schematic diagram.
Fig. 3 is lock water storage phase structural schematic diagram under diversion tunnel.
Fig. 4 is the structural schematic diagram after water storage.
Fig. 5 is gates of segmental shape structural sections schematic diagram.
It is 1- diversion tunnels to be marked in figure, the upper working tunnels of 2-, working tunnel under 3-, 21- gates, 22- arc-shaped transition sections,
23- liner structure sections, the permanent plugs of 24-, 25- arc-shaped door lock chambers, 31- block plug, 32- connection plugs.
Specific implementation mode
The following further describes the present invention with reference to the drawings.
As shown in Figure 1, Figure 2, Figure 3 shows, diversion tunnel working tunnel is used as reconstruction structure of the ecology for water hole, including diversion tunnel 1
With the working tunnel in 1 side of diversion tunnel is set, the working tunnel is divided into working tunnel 2 and lower working tunnel 3, wherein on
The entrance of working tunnel 2 is connected to river, and outlet is connected to diversion tunnel 1, entrance and 2 phase of upper working tunnel of lower working tunnel 3
Even, outlet is connected to diversion tunnel 1, and one end that the upper working tunnel 2 is connected with diversion tunnel 1 is equipped with gate 21,21 upstream of gate
Side is equipped with arc-shaped door lock chamber 25, and the junction of the lower working tunnel 3 and diversion tunnel 1, which is equipped with, blocks plug 31, the upper construction
Branch hole 2 and the junction of lower working tunnel 3 are equipped with connection plug 32.After the completion of structure of modification construction, it's the water phase pasts diversion tunnel, can
Upper working tunnel 2 is blocked using gate 21, lower working tunnel 3 is blocked using plug 31 is blocked；In diversion tunnel 1
Lower lock water storage phase, dismountable gate 21 are controlled using arc-shaped door lock chamber 25, make upstream river water along upper working tunnel 2 into
Enter diversion tunnel 1, then flow to downstream and form ecological water supply, eliminate the engineering for resetting an ecology for water hole, has good
Economic benefit, the duration is greatly shortened.The concrete structure of arc-shaped door lock chamber 25 is convenient for as shown in figure 5, its top is open type
Installation and adjusting arc-shaped door lock chamber 25.
Be arranged connection plug 32 purpose be, if not connecting plug 32, when carrying out ecological water overcurrent, although under apply
The outlet end in work branch hole 3 is sealed by blocking plug 31, flow can not overcurrent, but in river water full of after lower working tunnel 3,
Newly into flow still can form impact turbulent in the junction of upper working tunnel 2 and lower working tunnel 3, downstream life cannot be met
State water supply requirement, and since 3 position of lower working tunnel is relatively low, subsequently also needs to pull water out, be more troublesome, increase without recruitment
Journey.And after provided with connection plug 32, flow directly from 2 overcurrent of upper working tunnel, reduces path, also just reduces and applies
The engineerings such as reconstruction, the reinforcing in work branch hole.
The construction method of the reconstruction structure, includes the following steps：
A, the access tunnel constructed as diversion tunnel 1 in diversion tunnel construction time, the above working tunnel 2 and lower working tunnel 3, it is complete
Structure after is as shown in Figure 1；
B, after the completion of diversion tunnel construction, in the outlet end of lower working tunnel 3, setting blocks plug 31, in upper working tunnel 2
Outlet end setting gate 21 and with arc-shaped door lock chamber 25, structure after the completion is as shown in Figure 2；
C, the dam construction phase first uses gate 21 to block upper working tunnel 2, using 1 overcurrent river water of diversion tunnel, then builds big
Dam cofferdam carries out dam construction；
D, after the completion of dam construction, 1 time lock water storage phase of diversion tunnel first removes the gate 21 in upper working tunnel 2, then leads to
It overregulates in working tunnel 2 arc-shaped door lock chamber 25 and carries out overcurrent through upper working tunnel 2 to diversion tunnel 1 to make ecology supply water,
Reservoir level can be risen simultaneously and be controlled, as shown in Figure 3；
E, after dam reaches water storage requirement, 2 arc-shaped door lock chamber 25 of working tunnel stops supplying water in closing, then in upper construction
Permanent plug 24 is set between the arc-shaped door lock chamber 25 and diversion tunnel 1 in branch hole 2, and reconstruction is completed, structure such as Fig. 4 institutes after the completion
Show.
By being transformed to traditional working tunnel so that working tunnel different times have different functions, water conservancy diversion
The construction time in hole 1, the access tunnel that working tunnel is constructed as diversion tunnel；The construction time of dam blocks 31 He of plug by setting
Gate 21 ensure that the normal diversion function of diversion tunnel 1；The dam water storage phase preferably resolves lock under high earth and rockfill dam diversion tunnel
The water storage phase does not stop, and meets the requirement of downstream ecology flow, while it is uppity to solve high earth and rockfill dam reservoir level rising
Problem.And entire improvement project is gradually to be transformed, the characteristics of making full use of different times high rock fill dam construction water conservancy diversion, is subsequently changed
It makes and is carried out on the basis of previous transformation, can greatly alleviate the duration pressure of construction in later period in this way, shorten critical circuits
Construction period.
Since the trunk roads of working tunnel are generally parallel with diversion tunnel 1, then need to be arranged needing the when of being connected to diversion tunnel 1
Corner is turned to diversion tunnel 1, and right-angled bend is usually used in currently existing scheme, but in order to reduce water when follow-up overcurrent ecology supplies water
The impact to working tunnel is flowed, is connected with diversion tunnel 1 by arc-shaped transition section 22 in the outlet end of the upper working tunnel 2.Into
One step, in order to reach the overcurrent most smoothed out, the radius of the arc-shaped transition section 22 should be greater than the hole diameter of 5 times of upper working tunnels 2,
Corner is less than 60 °.
As shown in figure 3, the entrance of the lower working tunnel 3 is connected with the arc-shaped transition section 22 of upper working tunnel 2, in order to
22 phase of arc-shaped transition section of upper working tunnel 2 is agreed with, and sets and upper working tunnel 2 upstream face of the connection plug 32 to
The cambered surface that arc-shaped transition section 22 matches.
Punching is formed to the outlet of upper working tunnel 2 when entering diversion tunnel 1 from upper working tunnel 2 in order to avoid ecological flow
Brush, is equipped with liner structure section 23 in the outlet end of the upper working tunnel 2, and the gate 21 and the setting of arc-shaped door lock chamber 25 exist
In liner structure section 23, the described one end of liner structure section 23 far from diversion tunnel 1 is equipped with gradual transition section.The liner structure section 23
Can be that permanent plug 24 is subsequently arranged to provide construction basis simultaneously.
In view of entire duration situation, to reconstructing preferably during carrying out water using diversion tunnel 1 for upper working tunnel 2
Dry season carries out, specifically, cofferdam is arranged in the entrance in upper working tunnel 2, is then reconstructed to upper working tunnel 2, including
In the setting of the junction of upper working tunnel 2 and lower working tunnel 3 connection plug 32, arc-shaped door lock chamber 25 and liner structure section 23
Transition construction so that upper working tunnel meet ecology supply water overcurrent requirement.
The reconstruction structure of the application takes full advantage of the design feature of working tunnel and water conservancy diversion, is made by transformation gradually whole
A engineering not only meets ecological water supply requirement, has saved cost and duration, even more plays different works in the different construction stages
With, or even solve high earth and rockfill dam reservoir level and rise uppity problem, there is good practicability and application prospect, be
Similar engineering provides good reference.
Claims (7)
1. diversion tunnel working tunnel is used as reconstruction structure of the ecology for water hole, including diversion tunnel (1) and setting in diversion tunnel side
(1) working tunnel, it is characterized in that：The working tunnel is divided into working tunnel (2) and lower working tunnel (3), wherein on apply
The entrance in work branch hole (2) is connected to river, and outlet is connected to diversion tunnel (1), entrance and the upper working tunnel of lower working tunnel (3)
(2) it is connected, outlet is connected to diversion tunnel (1), and one end that the upper working tunnel (2) is connected with diversion tunnel (1) is equipped with gate
(21), gate (21) upstream side is equipped with arc-shaped door lock chamber (25), and the lower working tunnel (3) and the junction of diversion tunnel (1) are set
There are closure plug (31), the junction of the upper working tunnel (2) and lower working tunnel (3) to be equipped with connection plug (32).
2. diversion tunnel working tunnel as described in claim 1 is used as reconstruction structure of the ecology for water hole, it is characterized in that：On described
The outlet end of working tunnel (2) is connected by arc-shaped transition (22) with diversion tunnel (1).
3. diversion tunnel working tunnel as claimed in claim 2 is used as reconstruction structure of the ecology for water hole, it is characterized in that：The arc
The radius of shape changeover portion (22) is more than the hole diameter of 5 times of upper working tunnels (2), and corner is less than 60 °.
4. diversion tunnel working tunnel as claimed in claim 2 is used as reconstruction structure of the ecology for water hole, it is characterized in that：Under described
The entrance of working tunnel (3) is connected with the arc-shaped transition section (22) of upper working tunnel (2), the upstream face of the connection plug (32)
For the cambered surface to match with the arc-shaped transition section (22) of upper working tunnel (2).
5. the diversion tunnel working tunnel as described in Claims 1 to 4 any one claim is used as transformation of the ecology for water hole
Structure, it is characterized in that：Liner structure section (23), the gate (21) and arc are equipped in the outlet end of the upper working tunnel (2)
In liner structure section (23), the one end of the liner structure section (23) far from diversion tunnel (1) is equipped with for shape door lock room (25) setting
Gradual transition section.
6. a pair diversion tunnel working tunnel as claimed in claim 5 is used as construction method of the ecology for the reconstruction structure in water hole,
It is characterized in, includes the following steps：
A, the access tunnel constructed as diversion tunnel in diversion tunnel construction time, the above working tunnel and lower working tunnel；
B, after the completion of diversion tunnel construction, in the outlet end of lower working tunnel, setting blocks plug, in the outlet end of upper working tunnel
Gate and arc-shaped door lock chamber are set；
C, the dam construction phase first blocks upper working tunnel with gate, using diversion tunnel overcurrent river water, then builds dam cofferdam,
Carry out dam construction；
D, after the completion of dam construction, the lock water storage phase under diversion tunnel first removes the gate in upper working tunnel, then by adjusting
Arc-shaped door lock chamber in working tunnel carries out overcurrent to make ecology supply water through upper working tunnel to diversion tunnel, while can be to reservoir water
Position, which rises, to be controlled；
E, after dam reaches water storage requirement, the arc-shaped door lock chamber in closing in working tunnel stops supplying water, then in upper construction branch
Permanent plug is set between the arc-shaped door lock chamber and diversion tunnel in hole, and reconstruction is completed.
7. construction method as claimed in claim 6, it is characterized in that：Dry season during carrying out water using diversion tunnel,
Cofferdam is arranged in the entrance of upper working tunnel, is then reconstructed to upper working tunnel, including in upper working tunnel and lower construction branch
The transition construction of junction setting the connection plug, arc-shaped door lock chamber and lining cutting section in hole, so that upper working tunnel meets life
The overcurrent requirement that state supplies water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810840336.7A CN108677892B (en) | 2018-07-27 | 2018-07-27 | Reconstruction structure for ecological water supply tunnel by diversion tunnel construction branch tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810840336.7A CN108677892B (en) | 2018-07-27 | 2018-07-27 | Reconstruction structure for ecological water supply tunnel by diversion tunnel construction branch tunnel |
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| CN108677892A true CN108677892A (en) | 2018-10-19 |
| CN108677892B CN108677892B (en) | 2024-04-19 |
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| CN201810840336.7A Active CN108677892B (en) | 2018-07-27 | 2018-07-27 | Reconstruction structure for ecological water supply tunnel by diversion tunnel construction branch tunnel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258474A (en) * | 2019-06-04 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | It can be used for the ecological diversion tunnel structure that extra-high rock-fill dams major flood season is passed the flood period |
| CN111828050A (en) * | 2020-07-28 | 2020-10-27 | 中铁二局集团有限公司 | Construction method for small-section traffic hole to enter thin and high special-shaped space structure diversion lock chamber |
| CN114673125A (en) * | 2022-03-15 | 2022-06-28 | 长江岩土工程有限公司 | Plugging construction method for diversion tunnel of hydraulic engineering |
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| CN208965520U (en) * | 2018-07-27 | 2019-06-11 | 中国电建集团成都勘测设计研究院有限公司 | Diversion tunnel working tunnel is used as ecology for the reconstruction structure in water hole |
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2018
- 2018-07-27 CN CN201810840336.7A patent/CN108677892B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007032129A (en) * | 2005-07-28 | 2007-02-08 | Dam Gijutsu Center | Method of construction of dam |
| CN205501957U (en) * | 2016-04-11 | 2016-08-24 | 中国电建集团成都勘测设计研究院有限公司 | Retaining phase downstream water supply system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258474A (en) * | 2019-06-04 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | It can be used for the ecological diversion tunnel structure that extra-high rock-fill dams major flood season is passed the flood period |
| CN111828050A (en) * | 2020-07-28 | 2020-10-27 | 中铁二局集团有限公司 | Construction method for small-section traffic hole to enter thin and high special-shaped space structure diversion lock chamber |
| CN111828050B (en) * | 2020-07-28 | 2022-04-08 | 中铁二局集团有限公司 | Construction method for small-section traffic hole to enter thin and high special-shaped space structure diversion lock chamber |
| CN114673125A (en) * | 2022-03-15 | 2022-06-28 | 长江岩土工程有限公司 | Plugging construction method for diversion tunnel of hydraulic engineering |
| CN114673125B (en) * | 2022-03-15 | 2024-06-04 | 长江岩土工程有限公司 | Hydraulic engineering diversion tunnel plugging construction method |
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| Publication number | Publication date |
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| CN108677892B (en) | 2024-04-19 |
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