CN201627185U - Water inlet structure of cofferdam-tower integrated diversion tunnel - Google Patents
Water inlet structure of cofferdam-tower integrated diversion tunnel Download PDFInfo
- Publication number
- CN201627185U CN201627185U CN201020118697XU CN201020118697U CN201627185U CN 201627185 U CN201627185 U CN 201627185U CN 201020118697X U CN201020118697X U CN 201020118697XU CN 201020118697 U CN201020118697 U CN 201020118697U CN 201627185 U CN201627185 U CN 201627185U
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- China
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- cofferdam
- water inlet
- inlet structure
- tunnel
- diversion tunnel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model relates to a water inlet structure of a cofferdam-tower integrated diversion tunnel, and aims at solving the technical problem that the water inlet structure with simple structure and convenient construction for the cofferdam-tower integrated diversion tunnel is provided to combine a temporary water-retaining cofferdam with permanent structures such as an inlet open-cut tunnel segment and the like so as to reduce the arrangement difficulty of the cofferdam, omit the cofferdam dismantling procedure, and prevent the permanent structures from being influenced by dismantling blasting at the same time. To solve the problem, the water inlet structure of the cofferdam-tower integrated diversion tunnel adopts the technical scheme as follows: the water inlet structure comprises the inlet open-cut tunnel segment, and is characterized in that the both upriver sides of the inlet open-cut tunnel segment are connected with a transverse water passing cofferdam through a longitudinal connection transition section in a seal manner so as to form a whole body. The water inlet structure is mainly used in the hydraulic and hydro-power engineering, and is especially suitable for the engineering for the same elevation arrangement of two diversion tunnels and the inlet arrangement of one diversion tunnel that does not participate in river closure under the condition adopting the single tunnel river closure.
Description
Technical field
The utility model relates to a kind of water inlet structure of diversion tunnel, particularly a kind of weir tower integral type diversion tunnel water inlet structure.Mainly be applicable to Hydraulic and Hydro-Power Engineering, be specially adapted to arrange with elevation the engineering of two diversion tunnels, adopting single hole to dam under the condition, a diversion tunnel import that does not participate in damming is arranged.
Background technology
The present domestic water electrical engineering duration is all nervous, and for guaranteeing to dam the node target, some arrange that two diversion tunnel engineerings need adopt single hole to dam, the diversion mode of passing the flood period in two holes.And (or two different elevations of tunnel are arranged when two diversion tunnel import elevations are arranged with elevation, the diversion tunnel base plate that elevation is arranged can not satisfy when damming high range request), before damming, need before that diversion tunnel water inlet that do not participate in damming, to be provided with the diversion tunnel normal construction of cofferdam to guarantee not constructed of temporary water dash; After this diversion tunnel completion possessed water condition, need again this water-retaining cofferdam is carried out demolition blasting.And often for guaranteeing that do not influence the diversion tunnel water inlet structure arranges, it is very difficult that the temporary water dash cofferdam is arranged, and the later stage when removing Effects of Subsurface Explosion can not guarantee, water inlet structure is also had a significant impact.So the arrangement that research temporary water dash cofferdam combines with permanent structure is very necessary and urgent.
Summary of the invention
The technical problems to be solved in the utility model is: the weir tower integral type diversion tunnel water inlet structure that a kind of simple in structure, easy construction is provided at the problem of above-mentioned existence, the temporary water dash cofferdam is combined with permanent structures such as import open cut tunnel sections, be intended to reduce the layout difficulty in cofferdam, save the step of removing the cofferdam simultaneously, avoid the influence of demolition blasting permanent structure.
The technical scheme that the utility model adopted is: weir tower integral type diversion tunnel water inlet structure, have import open cut tunnel section, and it is characterized in that: both sides, described import open cut tunnel section upstream fuse by vertical connection transition section and horizontal overflow cofferdam sealing.
Described import open cut tunnel section, vertically connect in transition section and the foundation ditch that laterally overflow cofferdam surrounds absorption basin is set, improve the flow condition under the overcurrent operating mode of cofferdam.
It is tubaeform that described import open cut tunnel section top is elliptic curve, improves current and advance the hole condition.
As if lock under diversion tunnel is before flood, then entrance gate is set in import open cut tunnel section.
The beneficial effects of the utility model are: the utility model is linked to be integral body with horizontal overflow cofferdam (temporary water dash of the prior art cofferdam) by vertical connection transition section and import open cut tunnel section, has reduced single hole and has dammed and arrange the difficulty in cofferdam; Simultaneously, laterally overflow cofferdam need not be removed, the influence that when having avoided removing other permanent structures has been produced, diversion tunnel has the debris retaining function when normally moving, because laterally the overflow cofferdam elevation satisfies the dash requirement under the lock shutoff standard of flood flow under dry season, therefore if shutoff behind the diversion tunnel flood, then saved the setting of gate, reduced construction cost, if shutoff before the flood, though gate need be set, then can be in dry season in doing ground Emergency Gate groove; In addition, the utility model structural configuration is flexible, greatly reduces the cost of parallel works.
Description of drawings
Fig. 1 is the layout schematic diagram of embodiment 1.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is the layout schematic diagram of embodiment 2.
Fig. 4 is that the B-B of Fig. 3 is to sectional view.
The specific embodiment
Embodiment 1: as shown in Figure 1 and Figure 2, present embodiment is applicable to behind the flood diversion tunnel of lock down, mainly comprise import open cut tunnel section 1, vertically connect transition section 2 and horizontal overflow cofferdam 3, wherein both sides, import open cut tunnel section 1 upstream are linked to be integral body by vertical connection transition section 2 and horizontal overflow cofferdam 3 sealings.Described import open cut tunnel section 1 top employing elliptic curve tapered inlet improves current and advances the hole condition.Vertically connect transition section 2 and be used to connect import open cut tunnel section 1 and horizontal overflow cofferdam 3, its roll-off characteristic, can guarantee effectively that area of passage in any one section under going along with sb. to guard him of cofferdam is all greater than the area of passage of open cut tunnel section, thereby guarantee that structure does not influence the diversion tunnel conveyance capacity of flood period, and can improve flow condition preferably.The elevation of described horizontal overflow cofferdam 3 needs to satisfy simultaneously dam normal flow and the dash requirement under the lock shutoff standard of flood flow under dry season, and possessing the water condition previous crops to diversion tunnel after great river Dan Dong dams is water-retaining cofferdam; After the normal operation of diversion tunnel, the diversion tunnel flood that horizontal overflow cofferdam 3 does not influence enters the hole, has the debris retaining function same period; Diversion tunnel is behind flood during shutoff, owing to enter dry season, laterally overflow cofferdam 3 self elevation can guarantee shutoff work dry work in the hole.
Because diversion tunnel is the high-velocity flow tunnel, for guaranteeing structural safety, its import flow rate of water flow is unsuitable excessive, therefore present embodiment is in import open cut tunnel section 1, vertically connect in transition section 2 and the foundation ditch that laterally overflow cofferdam 3 surrounds absorption basin 4 is set, current are in covering the process that horizontal overflow cofferdam lets out for 3 times, through effectively reducing flow rate of water flow after absorption basin 4 energy dissipatings, improve current and advance the hole condition.
Embodiment 2: as shown in Figure 3, Figure 4, present embodiment is applicable to the preceding diversion tunnel of lock down of flood, and the present embodiment structure is substantially the same manner as Example 1, and its difference is, described import open cut tunnel section 1 is provided with entrance gate 5, during the lock shutoff, entrance gate 5 is closed under the diversion tunnel, guarantees shutoff work dry work in the hole, simultaneously, because laterally the elevation of overflow cofferdam 3 need satisfy the dash requirement under the normal flow that dams dry season, during dry season, can be in doing ground Emergency Gate groove.
Above-mentioned two embodiment mainly are applicable to the engineering of arranging two diversion tunnels, are adopting single hole to dam under the condition, and the diversion tunnel import that does not participate in damming is arranged.Before the construction, import earth rock cofferdam 6 need be set, guarantee that present embodiment is to construct doing under the ground condition, possessed water condition after, remove import earth rock cofferdam 6.
Claims (5)
1. a weir tower integral type diversion tunnel water inlet structure has import open cut tunnel section (1), it is characterized in that: described import open cut tunnel section (1) both sides, upstream fuse with horizontal overflow cofferdam (3) sealing by vertically connecting transition section (2).
2. weir according to claim 1 tower integral type diversion tunnel water inlet structure is characterized in that: described import open cut tunnel section (1), vertically connect in transition section (2) and the foundation ditch that laterally overflow cofferdam (3) surrounds absorption basin (4) is set.
3. weir according to claim 1 and 2 tower integral type diversion tunnel water inlet structure, it is characterized in that: it is tubaeform that described import open cut tunnel section (1) top is elliptic curve.
4. weir according to claim 1 and 2 tower integral type diversion tunnel water inlet structure, it is characterized in that: described import open cut tunnel section (1) is provided with entrance gate (5).
5. weir according to claim 3 tower integral type diversion tunnel water inlet structure, it is characterized in that: described import open cut tunnel section (1) is provided with entrance gate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020118697XU CN201627185U (en) | 2010-02-24 | 2010-02-24 | Water inlet structure of cofferdam-tower integrated diversion tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020118697XU CN201627185U (en) | 2010-02-24 | 2010-02-24 | Water inlet structure of cofferdam-tower integrated diversion tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201627185U true CN201627185U (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020118697XU Expired - Fee Related CN201627185U (en) | 2010-02-24 | 2010-02-24 | Water inlet structure of cofferdam-tower integrated diversion tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201627185U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032714A (en) * | 2014-06-25 | 2014-09-10 | 中国电建集团华东勘测设计研究院有限公司 | Once-closure and staging-closure combined dam type power plant construction diversion method |
| CN114645521A (en) * | 2022-03-28 | 2022-06-21 | 中电建十一局工程有限公司 | Construction method for existing reservoir emergency water drainage hole inlet |
-
2010
- 2010-02-24 CN CN201020118697XU patent/CN201627185U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032714A (en) * | 2014-06-25 | 2014-09-10 | 中国电建集团华东勘测设计研究院有限公司 | Once-closure and staging-closure combined dam type power plant construction diversion method |
| CN114645521A (en) * | 2022-03-28 | 2022-06-21 | 中电建十一局工程有限公司 | Construction method for existing reservoir emergency water drainage hole inlet |
| CN114645521B (en) * | 2022-03-28 | 2024-02-13 | 中电建十一局工程有限公司 | Construction method for import of emergency water discharge hole of existing reservoir |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20190224 |