CN209194485U - A kind of diversion tunnel structure - Google Patents
A kind of diversion tunnel structure Download PDFInfo
- Publication number
- CN209194485U CN209194485U CN201821668272.9U CN201821668272U CN209194485U CN 209194485 U CN209194485 U CN 209194485U CN 201821668272 U CN201821668272 U CN 201821668272U CN 209194485 U CN209194485 U CN 209194485U
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- Prior art keywords
- transition
- pressure hole
- conditioning tank
- diversion tunnel
- hole
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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
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Abstract
The utility model provides a kind of diversion tunnel structure, including without pressure hole, have pressure hole, drain cavern；It is connect by conditioning tank with there is pressure hole without pressure hole, the connection of drain cavern and conditioning tank, the downstream of the conditioning tank is equipped with inclined shaft, and inclined shaft is connect with there is pressure hole；The conditioning tank includes upstream transition, downstream transition, side transition and interlude, and one end of interlude is connect with upstream transition, and the other end is connect with downstream transition, and the side of interlude is connect with side transition；One end of the upstream transition is smoothly connect with the hole end without pressure hole, and one end of downstream transition is smoothly connect with inclined shaft, the first smooth connection in one end of side transition and the hole of drain cavern.The utility model the diversion tunnel in power station is arranged to before without there is pressure diversion tunnel after pressure, can give full play to pressurized tunnel and non-pressure tunnel work arrangement, hydraulic performance, loading characteristic and in terms of respective intrinsic advantage.
Description
Technical field
The utility model relates to a kind of diversion tunnel structures, belong to water power hydraulic engineering technical field, are particularly suitable for drawing
Ability of swimming power station is limited by unfavorable terrain geological conditions or the comprehensive arrangement of hinge, is designed as single non-pressure tunnel or pressurized tunnel
The long distance water transfer tunnel having difficulties.
Background technique
Country's hydroelectric development focuses mostly in southwest at present, and river slope is larger, flow is relatively small, and river valley is in narrow more
Narrow " V " type, complicated geologic conditions, it is economical rationality that building, which has the run-of-river power station of the underground diversion tunnel of long range,
's.
Diversion tunnel is that the water flow that will generate electricity from upstream reservoir area leads to water conveyance structure near power plant building, by hydraulics
Non-pressure tunnel and pressurized tunnel can be divided into.Wherein non-pressure tunnel mostly uses city-gate section, and water flow is in free flow state in hole, and
Pressurized tunnel mostly uses horseshoe or round section, and water flow is in full hole pressure flow state in hole.The length of high moisture head and small flow is drawn
The area of passage requirement in water power station, water diverting structure is low, and the cross dimensions of diversion tunnel is often depending on construction equipment requirement,
The cross-sectional area of non-pressure tunnel or pressurized tunnel is essentially identical, permeates damage to reduce water flow of the diversion tunnel under the effect of high hydraulic pressure
Becoming estranged reduces difficulty of construction, general it is contemplated that being arranged to free-flow tunnel.In Practical Project utilization, by hinge general layout
Or the limitation of topographic and geologic condition, such as along the massif of diversion line has deeper incision cheuch, free-flow tunnel exports side slope
Precipitous to lead to excavate that forebay is very difficult or reservoir level is shallower when being difficult to meet intake depth of immersion, diversion tunnel is difficult to arrange
At single non-pressure tunnel or pressurized tunnel.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of diversion tunnel structure, the diversion tunnel structure cloth
Set flexibly, hydraulic performance is superior, has pressure diversion tunnel structure after easy for construction and adaptable preceding no pressure, project benefit is aobvious
It writes, is suitble to promote and apply.
The utility model is achieved by the following technical programs.
A kind of diversion tunnel structure provided by the utility model, including without pressure hole, have pressure hole, drain cavern；Pass through without pressure hole
Conditioning tank connect with there is pressure hole, the connection of drain cavern and conditioning tank, and the downstream of the conditioning tank is equipped with inclined shaft, inclined shaft with have pressure hole
Connection；The conditioning tank includes upstream transition, downstream transition, side transition and interlude, one end of interlude with it is upper
Transition connection is swum, the other end is connect with downstream transition, and the side of interlude is connect with side transition；The upstream gradual change
One end of section is smoothly connect with the hole end without pressure hole, and one end of downstream transition is smoothly connect with inclined shaft, and the one of side transition
It holds and is smoothly connect with the hole of drain cavern head.
Described to be arranged without pressure hole in upstream, section configuration is gateway opening type.
Described to have the setting of pressure hole in downstream, section configuration is horseshoe or round.
The side of conditioning tank is arranged in the drain cavern, and section configuration is gateway opening type.
Overflow side weir is equipped in the interlude, interlude is divided into pond body and drain tank by overflow side weir.
Supporting beam is equipped between the overflow side weir and the lining cutting of drain tank.
The overflow side weir uses sharp-crested weir, and the elevation of weir crest H2 of overflow side weir is concordant with ordinary water level H1 in conditioning tank.
The height of the conditioning tank is greater than the height for without pressure hole, having pressure hole, drain cavern, and the width of conditioning tank is greater than no pressure
Hole, the width for having pressure hole, drain cavern.
The section configuration of the inclined shaft be it is horseshoe or round, the base slope range of grade of inclined shaft is 1:8~1:10.
The side of the drain cavern is equipped with access path.
The utility model has the beneficial effects that:
1. pressurized tunnel and nothing can be given full play to without there is pressure diversion tunnel after pressure before the diversion tunnel in power station is arranged to
Press tunnel work arrangement, hydraulic performance, loading characteristic and in terms of respective intrinsic advantage；
2. form of fracture of the upstream without pressure hole is simple, convenient for construction, receiving internal water pressure is small, can reduce the infiltration of tunnel lining
Permeable amount, while the water inlet without pressure hole is required without depth of immersion, suitable for the engineering that the reservoir area depth of water is shallower or range of stage is big；
3. the hydraulics in the downstream hole You Ya are superior, structure flexible arrangement, unfavorable topographic and geologic condition can be avoided, and full
The requirement of the turbine-generator units pressure flow of sufficient power plant building；
4. without pressure hole and have pressure hole between conditioning tank is set, can effectively correct the reference flow of diversion tunnel, extra stream
Amount is imported the drain tank of conditioning tank by cross flow at the top of the overflow side weir of conditioning tank, is then flowed through drain cavern and is disappeared through exporting efficiency facility
Can after be discharged into river, revised reference flow is after inclined shaft adjusts by being to have pressure flowing full without pressure free flow transition；Meanwhile power plant
The reflection water soot blower in the downstream hole You Ya can effectively be cut down in conditioning tank when the unit in room is closed, avoid reflection water hammer wave action without
Press hole fluidised form, it is ensured that upstream is without pressure flowing full fluidised form without pressure hole.
Detailed description of the invention
Fig. 1 is the planar structure schematic diagram of the utility model；
Fig. 2 is the conditioning tank planar structure schematic diagram of the utility model；
Fig. 3 is the conditioning tank vertical section structure schematic diagram of the utility model；
Fig. 4 is the structural schematic diagram at the utility model conditioning tank and drain cavern junction E-E section；
Fig. 5 is the utility model without the structural schematic diagram at pressure hole cross section A-A；
Fig. 6 is that the utility model has the structural schematic diagram pressed at the B-B of hole cross section；
Fig. 7 is the structural schematic diagram at the utility model drain cavern cross section C-C；
Fig. 8 is the structural schematic diagram at the utility model conditioning tank cross section D-D；
In figure: 1- has pressure hole, 3- drain cavern, 4- conditioning tank, 5- inclined shaft, the upstream 41- transition, the downstream 42- without pressure hole, 2-
Transition, the side 43- transition, the pond 44- body, 45- overflow side weir, 46- drain tank, 47- supporting beam.
Specific embodiment
Be described further below the technical solution of the utility model, but claimed range be not limited to it is described.
As shown in Fig. 1~8, a kind of diversion tunnel structure, including without pressure hole 1, have pressure hole 2, drain cavern 3；Pass through without pressure hole 1
Conditioning tank 4 is connect with there is pressure hole 2, the connection of drain cavern 3 and conditioning tank 4, to meet hydropower station pressure water flow requirements, the adjusting
The downstream in pond 4 is equipped with inclined shaft 5, makes water flow by crossing to there is a pressure without pressing through, and inclined shaft 5 connect with there is pressure hole 2, have the hole end for pressing hole 2 and
Plant area's surge shaft or penstock connect；The conditioning tank 4 includes upstream transition 41, downstream transition 42, side transition
43 and interlude, one end of interlude connect with upstream transition 41, the other end is connect with downstream transition 42, the one of interlude
Side is connect with side transition 43；One end of the upstream transition 41 is smoothly connect with the hole end without pressure hole 1, no pressure hole 1
Hole head connects with reservoir area intake, and one end of downstream transition 42 is smoothly connect with inclined shaft 5, one end of side transition 43 with let out
The first smooth connection in the hole in water hole 3.
Described to be arranged without pressure hole 1 in upstream, section configuration is gateway opening type.
Described to have the setting of pressure hole 2 in downstream, section configuration is horseshoe or round.
Further, drain cavern 3 is preferably combined with working tunnel, and comprehensive coordination arrangement is to reduce construction investment, base area
Shape geological conditions may be arranged at the side of conditioning tank 4, and section configuration is gateway opening type.
Overflow side weir 45 is equipped in the interlude, interlude is divided into pond body 44 and drain tank 46 by overflow side weir 45.
It is equipped with supporting beam 47 between the overflow side weir 45 and the lining cutting of drain tank 46, improve structure stress and maintains structure
Stablize.
The overflow side weir 45 uses sharp-crested weir, reduces the cross section of 4 barrel of conditioning tank, the elevation of weir crest of overflow side weir 45
H 2 is concordant with ordinary water level H 1 in conditioning tank 4, and when water level is more than ordinary water level H1, extra water passes through 45 top of overflow side weir
Cross flow is discharged into drain tank 46, is then discharged into river after energy dissipating via drain cavern 3.
The height of the conditioning tank 4 is greater than the height for without pressure hole 1, having pressure hole 2, drain cavern 3, and the width of conditioning tank 4 is greater than
Without pressure hole 1, there is the width for pressing hole 2, drain cavern 3, conditioning tank 4 is in tunnel form, so that water flow is without pressure free flow fluidised form.
The section configuration of the inclined shaft 5 be it is horseshoe or round, the base slope range of grade of inclined shaft 5 is 1:8~1:10 so that
The water flow of inclined shaft 5 is by being to have pressure flowing full fluidised form without pressure free flow transition.
The side of the drain cavern 3 is equipped with access path, is conveniently periodically into, and carries out repair and maintenance.
It is preferential, sand flushing system can also be set in 4 bottom of conditioning tank, the sand flushing system such as application No. is
A kind of power station automatic sand discharging system disclosed in the Chinese patent of 201120491462X, wherein exhaust pipe and side transition
Then 43 connections arrange that desilting tunnel, side transition 43 are connect with drain cavern 3 by desilting tunnel, contained in this way by 3 one end of drain cavern
After husky water flow is by 2 sand discharges, river is discharged by drain cavern 3 and after energy dissipating.
In conclusion diversion tunnel is difficult to arrange because being limited by unfavorable topographic and geologic condition or hinge general layout
At single non-pressure tunnel or pressurized tunnel, and the utility model the diversion tunnel in power station is arranged to before without thering is pressure to draw after pressure
Water tunnel can give full play to pressurized tunnel and non-pressure tunnel in the side such as work arrangement, hydraulic performance, loading characteristic and service condition
The respective intrinsic advantage in face.
Claims (10)
1. a kind of diversion tunnel structure, including without pressure hole (1), have pressure hole (2), drain cavern (3), it is characterised in that: without pressure hole (1)
It is connect by conditioning tank (4) with there is pressure hole (2), the downstream of the connection of drain cavern (3) and conditioning tank (4), the conditioning tank (4) is set
Have inclined shaft (5), inclined shaft (5) is connect with there is pressure hole (2)；The conditioning tank (4) includes upstream transition (41), downstream transition
(42), one end of side transition (43) and interlude, interlude is connect with upstream transition (41), the other end and downstream gradual change
Section (42) connection, the side of interlude is connect with side transition (43)；One end of the upstream transition (41) with without pressure hole
(1) the smooth connection in hole end, one end of downstream transition (42) are smoothly connect with inclined shaft (5), one end of side transition (43)
It is smoothly connect with the hole of drain cavern (3) head.
2. diversion tunnel structure as described in claim 1, it is characterised in that: described to be arranged without pressure hole (1) in upstream.
3. diversion tunnel structure as described in claim 1, it is characterised in that: described to there are pressure hole (2) to be arranged in downstream, section
Shape is horseshoe or round.
4. diversion tunnel structure as described in claim 1, it is characterised in that: the drain cavern (3) is arranged in conditioning tank (4)
Side.
5. diversion tunnel structure as described in claim 1, it is characterised in that: overflow side weir (45) are equipped in the interlude,
Interlude is divided into pond body (44) and drain tank (46) by overflow side weir (45).
6. diversion tunnel structure as claimed in claim 5, it is characterised in that: the overflow side weir (45) and drain tank (46)
Supporting beam (47) are equipped between lining cutting.
7. diversion tunnel structure as claimed in claim 5, it is characterised in that: the overflow side weir (45) uses sharp-crested weir, overflows
The elevation of weir crest H2 for flowing side weir (45) is concordant with the interior ordinary water level H1 of conditioning tank (4).
8. diversion tunnel structure as described in claim 1, it is characterised in that: the height of the conditioning tank (4) is greater than without pressure hole
(1), there is the height in pressure hole (2), drain cavern (3), the width of conditioning tank (4) is greater than without pressure hole (1), has pressure hole (2), drain cavern
(3) width.
9. diversion tunnel structure as described in claim 1, it is characterised in that: the section configuration of the inclined shaft (5) is the shape of a hoof
Or it is round, the base slope range of grade of inclined shaft (5) is 1:8~1:10.
10. diversion tunnel structure as described in claim 1, it is characterised in that: it is logical that the side of the drain cavern (3) is equipped with maintenance
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821668272.9U CN209194485U (en) | 2018-10-15 | 2018-10-15 | A kind of diversion tunnel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821668272.9U CN209194485U (en) | 2018-10-15 | 2018-10-15 | A kind of diversion tunnel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209194485U true CN209194485U (en) | 2019-08-02 |
Family
ID=67408053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821668272.9U Active CN209194485U (en) | 2018-10-15 | 2018-10-15 | A kind of diversion tunnel structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209194485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134865A (en) * | 2021-12-07 | 2022-03-04 | 中国电建集团中南勘测设计研究院有限公司 | Water intaking is shunted with water drainage hole structure |
-
2018
- 2018-10-15 CN CN201821668272.9U patent/CN209194485U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134865A (en) * | 2021-12-07 | 2022-03-04 | 中国电建集团中南勘测设计研究院有限公司 | Water intaking is shunted with water drainage hole structure |
| CN114134865B (en) * | 2021-12-07 | 2023-03-10 | 中国电建集团中南勘测设计研究院有限公司 | Water intaking is shunted with arranging water hole structure |
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