CN219972979U - Tunnel structure for reservoir flood discharge, emptying and construction diversion - Google Patents
Tunnel structure for reservoir flood discharge, emptying and construction diversion Download PDFInfo
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- CN219972979U CN219972979U CN202320926913.0U CN202320926913U CN219972979U CN 219972979 U CN219972979 U CN 219972979U CN 202320926913 U CN202320926913 U CN 202320926913U CN 219972979 U CN219972979 U CN 219972979U
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000010813 municipal solid waste Substances 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 description 19
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000037237 body shape Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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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 relates to a hydraulic and hydroelectric engineering, in particular to a tunnel structure for reservoir flood discharge, emptying and construction diversion, which comprises a diversion tunnel (1) and a flood discharge tunnel, wherein a water outlet of the diversion tunnel is communicated with a water withdrawal tunnel section of the flood discharge tunnel, so that the flood discharge tunnel is divided into a non-combination section (10) and a combination section (9) along the water flow direction, a water pipe (8) serving as a blow-down pipe and an ecological flow pipe is buried in a rear-section bottom plate of the diversion tunnel and a combination-section bottom plate of the flood discharge tunnel, after diversion is finished, a first plug (6) is arranged at the front section of the diversion tunnel, and an inlet of the water pipe is buried in the first plug. The utility model enables four holes of diversion tunnel, flood discharge tunnel, blow-down pipe and ecological flow pipe to be integrated on the premise of not affecting the water discharge function of each tunnel, thereby greatly saving engineering investment.
Description
Technical Field
The utility model relates to water conservancy and hydropower engineering, in particular to a tunnel structure for reservoir flood discharge, emptying and construction diversion.
Background
According to the operation characteristics of the pumped storage power station, natural flood in a flood period occupies and adjusts the storage capacity, and the natural flood and the power generation flow are overlapped to possibly cause the downward leakage flow to be larger than the natural flood peak flow, so that artificial flood is generated at the downstream, and therefore, the leakage building needs to have the leakage control capability; meanwhile, the lower reservoir is also required to be provided with a water discharge bottom hole, so that the reservoir has certain pre-discharging capability, when small-flow flood is met, the water discharge bottom hole is opened to pre-discharge flood, the balance of the total volume of the upper reservoir and the lower reservoir is maintained, the surplus water can be timely discharged, the water level of the lower reservoir is reduced, and the power generation guarantee rate of the power station is also improved. At present, in order to meet the unique flood regulation requirement of a pumped storage power station and improve the engineering safety guarantee, a lower reservoir is generally provided with a gate-free control drainage building besides a low water level pre-drainage building.
Because the reservoir dam is built to form a barrier to the natural river, the pumped storage power station generally needs to be provided with an ecological flow discharging facility (such as a diversion tunnel) independently in design so as to meet the requirements of downstream environmental ecological flow and resident production and living water supply, and simultaneously, the pumped storage power station also needs to be provided with a blow-down pipe so as to meet the requirements of reservoir overhaul, scheduling and the like, and the engineering investment is further improved.
The junction layout design of the pumped storage power station is cooperated in multiple professions, the simple combination of the optimal designs of the professions does not necessarily form the optimal design scheme of the whole project, and the building can exert the maximum comprehensive effect on functions from the global consideration. In order to exert the investment effect to the maximum extent, the combination arrangement of temporary assistance and permanent main engineering is considered, namely, the diversion tunnel in the reservoir construction period is combined with flood discharge in the running period, emptying pre-venting and downstream water supply facilities.
Disclosure of Invention
Aiming at the defect that the existing flood discharging tunnel, the emptying pre-discharging facility, the ecological flow facility and the construction diversion tunnel are independently arranged, the utility model provides the tunnel structure for the reservoir flood discharging emptying and construction diversion, which has compact building arrangement and can greatly save engineering investment on the premise of not influencing the water discharging function of each tunnel.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a tunnel structure for reservoir flood discharge is emptied and construction water conservancy diversion, includes diversion tunnel and flood discharge tunnel, the delivery port of diversion tunnel with the drainage tunnel section intercommunication of flood discharge tunnel makes the flood discharge tunnel separates into non-combination section and combination section along the rivers direction, the back end bottom plate of diversion tunnel reaches the combination section bottom plate of flood discharge tunnel is buried and is used as the water pipe of blow-down pipe concurrently ecological flow pipe in, after the water conservancy diversion, the anterior segment of diversion tunnel sets up first end cap, bury in the first end cap the import of water pipe.
The utility model combines the rear section of the diversion tunnel with the water-withdrawing tunnel section of the flood discharge tunnel, and arranges the water pipe serving as the blow-down pipe and the ecological flow pipe in the bottom plate of the combined section of the rear section of the diversion tunnel and the flood discharge tunnel, thereby solving the problems of the blow-down, pre-discharge and ecological flow of the reservoir on the premise of not influencing the water discharge function of each tunnel, ensuring compact building arrangement and greatly saving engineering investment.
Preferably, a second plug is arranged at the water outlet of the diversion tunnel, so that the discharge of the flood discharge tunnel is not disturbed.
Preferably, the outlet of the flood discharging tunnel is provided with a stilling pool, the outlet of the water pipe is connected with a control valve chamber for controlling the water discharged by the water pipe, and the control valve chamber is arranged on the side wall of the stilling pool.
Preferably, a gate shaft is arranged in the diversion tunnel at the upstream of the first plug, and a gate is arranged in the gate shaft.
Preferably, an opening and closing bent is arranged at the top of the gate shaft, and a winch fixedly installed on the opening and closing bent is directly connected with the gate, so that the gate is lifted and placed simply and conveniently.
Preferably, the inlet of the flood discharging hole adopts a brake-free control annular practical weir, and the height of the weir top is flush with the normal water level of the reservoir.
Preferably, a trash rack is arranged at the inlet of the diversion tunnel so as to prevent dirt from entering the water drain pipe and the ecological flow pipe.
Preferably, the trash rack is a plane vertical movable trash rack.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model utilizes the combination arrangement of the flood discharging hole and the diversion tunnel, and the four holes of the diversion tunnel, the flood discharging hole, the blow-down pipe and the ecological flow pipe are arranged in a combined way by burying the water pipe serving as the blow-down pipe and the ecological flow pipe at the bottom plates of the diversion tunnel and the flood discharging hole, the diversion tunnel is reconstructed into the permanent flood discharging hole and the blow-down pipe and the ecological flow pipe after the diversion is completed in the construction period, and the flood discharging and the blow-down of the reservoir and the drainage of the ecological flow pipe are carried out.
2. The utility model adopts a gate-free overflow shaft type flood discharging tunnel to facilitate flood discharging management, the blow-down pipe and the ecological flow pipe adopt a conical valve control discharging mode, the utility model is very suitable for the characteristics that a pumping energy storage power station needs a valve with a small opening degree to discharge redundant flow and ecological flow which are larger than the adjustment storage capacity, on the premise of not influencing the functions of each tunnel, the number of the tunnel is reduced, so that the flood discharging of the reservoir and the ecological water discharge are orderly discharged to the downstream, the building structure is reasonable and simple in arrangement, flexible in opening and closing, convenient in operation and maintenance, the permanent combination is fully achieved, the length and the engineering quantity of the tunnel are reduced, the land-surface area is reduced, the damage to the earth surface environment is smaller, the utility model is beneficial to saving engineering investment and environmental protection, and the project construction period is shortened.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a plan view of an example of a tunnel structure for reservoir flood discharge and construction diversion according to the present utility model.
FIG. 2 is a longitudinal section view of a tunnel structure for reservoir flood discharge, emptying and construction diversion according to the present utility model.
In the figure:
1-diversion tunnel; 2-a trash rack; 3-gate shaft; 4-gate; 5-opening and closing the bent; 6-a first plug; 7-a second plug; 8-a water pipe; 9-a binding segment; 10-non-binding segment; 11-a stilling pool; 12-a control valve chamber; 13-dam; 14-reservoir.
Detailed Description
The utility model is further described below in connection with specific preferred embodiments, but it is not intended to limit the scope of the utility model.
For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described according to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.
As shown in fig. 1 to 2, an example of the tunnel structure for reservoir flood discharge emptying and construction diversion of the present utility model includes a diversion tunnel 1, a gate shaft 3, a gate 4, a water pipe 8, and a flood discharge tunnel, wherein the gate shaft 3 is a blow-down pipe and ecological flow pipe gate shaft, the gate 4 is an accident gate and is also a diversion blocking gate, the water pipe 8 is used as a blow-down pipe and ecological flow pipe, and the flood discharge tunnel includes a tunnel opening, a non-combination section 10, a combination section 9, and a relief pool 11 sequentially arranged along the water flow.
The gate shaft 3 is arranged at a proper position of the front section of the diversion tunnel 1 according to the topography, the gate 4 is arranged in the gate shaft 3, the opening and closing bent 5 is arranged at the top of the gate shaft 3, and the platform for opening and closing the bent 5 and the top of the dam 13 are positioned at the same elevation. The hoist fixedly arranged on the opening and closing bent frame 5 is directly connected with the gate 4, so that the gate 4 is simple and convenient to lift and put.
The water outlet of the diversion tunnel 1 is communicated with the water-withdrawal tunnel section of the flood discharge tunnel, so that the flood discharge tunnel is divided into a non-combination section 10 and a combination section 9 along the water flow direction, a water pipe 8 serving as a blow-down pipe and an ecological flow pipe is buried in the rear-section bottom plate of the diversion tunnel 1 and the combination-section bottom plate of the flood discharge tunnel, a first plug 6 is arranged in the diversion tunnel 1 positioned at the downstream of the gate vertical shaft 3 after the diversion is finished, an inlet of the water pipe 8 is buried in the first plug 6, and the water outlet of the diversion tunnel 1 is communicated with the water-withdrawal tunnel section (the non-combination section 10 and the combination section 9 are collectively called as the water-withdrawal tunnel section) of the flood discharge tunnel. The water outlet of the diversion tunnel 1 is provided with a second plug 7 so as to prevent the diversion tunnel 1 from influencing the discharge of the flood discharge tunnel. The outlet of the water pipe 8 is provided with a control valve chamber 12 for controlling the water pipe 8 to discharge water, and a conical valve in the control valve chamber 12 is connected with the outlet of the water pipe. The control valve chamber 12 is arranged at a side wall of the relief tank 11.
And an inlet of the flood discharging hole adopts a brake-free control annular practical weir, and the height of a weir top is flush with the normal water level of the reservoir.
A trash rack is arranged at the inlet of the diversion tunnel 1 so as to prevent dirt from entering the water drain pipe and the ecological flow pipe. The trash rack is preferably a plane vertical movable trash rack.
The utility model utilizes the combination arrangement of the spillway tunnel and the diversion tunnel 1, and solves the problems of emptying, pre-discharging and ecological flow of the reservoir 14 by burying the water pipe 8 serving as the emptying pipe and the ecological flow pipe on the diversion tunnel 1 and the bottom plate of the spillway tunnel.
In the concrete implementation of the utility model, the closure of the dam 13 is carried out after the construction of the tunnel mouth, the combination section 9, the non-combination section 10, the stilling pool 11, the diversion tunnel 1 and the water pipe 8 is completed, the diversion tunnel 1 flows through, then, a first plug 6 is arranged at a proper position selected at the downstream of the gate vertical shaft 3 to seal the water inlet channel of the original diversion tunnel 1, a steel pipe is embedded in the first plug 6 to form a water pipe (a blow-down pipe and an ecological flow pipe) inlet, a second plug 7 is arranged at the intersection section of the diversion tunnel 1 and the flood tunnel to restore the body shape of the flood tunnel, and thus, the discharge of the flood tunnel and the ecological flow pipe are not interfered with each other by arranging the first plug 6 and the second plug 7, and the building is compactly arranged on the premise of not affecting the water discharge function of each tunnel, so that the engineering investment is greatly saved.
The gate 4 is locked at the top of the gate shaft 3 at ordinary times, and a special gate warehouse is not required. The downstream ecological water is supplemented by adjusting the valve opening of the conical valve of the control valve chamber 12 of the water pipe 8 to release the flow, so that the daily low-water-level pre-release operation of the reservoir and the need of controlling the flood drainage flow in the flood period are met: when the reservoir 14 needs to store water, the gate 4 is lowered; when the ecological flow and the excessive runoff of the pre-draining reservoir are required to be drained, the gate 4 is opened, the water pipe 8 is controlled to drain by controlling the conical valve in the valve chamber 12, and the gate 4 is in a normally open state in a flat time.
Generally, the flow passage from the inlet to the outlet of the water pipe 8 is long, and if the pipe has a manufacturing and installation defect to cause serious water leakage or pipe explosion, the gate 4 can act to close the water inlet of the water pipe 8, prevent the accident from further expanding and protect the outlet of the water pipe 8 from working as a conical valve.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.
Claims (8)
1. The utility model provides a tunnel structure for reservoir flood discharge is emptied and construction water conservancy diversion, includes diversion tunnel (1) and flood discharge tunnel, its characterized in that, the delivery port of diversion tunnel with the drainage tunnel section intercommunication of flood discharge tunnel makes the flood discharge tunnel separates into non-combination section (10) and combination section (9) along the rivers direction, the back end bottom plate of diversion tunnel reaches water pipe (8) that are used as blow-down pipe and ecological flow pipe are buried in the combination section bottom plate of flood discharge tunnel, after the water conservancy diversion, the anterior segment of diversion tunnel sets up first end cap (6), bury in the first end cap the import of water pipe.
2. The tunnel structure for reservoir flood discharge, emptying and construction diversion according to claim 1, wherein the water outlet of the diversion tunnel is provided with a second plug (7).
3. The tunnel structure for reservoir flood discharge, emptying and construction diversion according to claim 1, wherein a relief pool (11) is arranged at the outlet of the flood discharge tunnel, the outlet of the water pipe is connected with a control valve chamber (12) for controlling the water discharged by the water pipe, and the control valve chamber (12) is arranged at the side wall of the relief pool.
4. The tunnel structure for reservoir flood discharge, emptying and construction diversion according to claim 1, wherein a gate shaft (3) is arranged in the diversion tunnel at the upstream of the first plug, and a gate (4) is arranged in the gate shaft.
5. The tunnel structure for reservoir flood discharge, emptying and construction diversion according to claim 4, wherein an opening and closing bent (5) is arranged at the top of the gate shaft, and a winch fixedly installed on the opening and closing bent is directly connected with the gate.
6. The tunnel structure for reservoir flood discharge, emptying and construction diversion of claim 1, wherein the inlet of the flood discharge tunnel adopts a floodgate-free control annular practical weir, and the elevation of the weir top is flush with the normal water level of the reservoir.
7. The tunnel structure for reservoir flood discharge, emptying and construction diversion according to claim 1, wherein a trash rack is arranged at the inlet of the diversion tunnel.
8. The tunnel structure for reservoir flood discharge, emptying and construction diversion of claim 7, wherein the trash rack is a plane vertical movable trash rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320926913.0U CN219972979U (en) | 2023-04-23 | 2023-04-23 | Tunnel structure for reservoir flood discharge, emptying and construction diversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320926913.0U CN219972979U (en) | 2023-04-23 | 2023-04-23 | Tunnel structure for reservoir flood discharge, emptying and construction diversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219972979U true CN219972979U (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320926913.0U Active CN219972979U (en) | 2023-04-23 | 2023-04-23 | Tunnel structure for reservoir flood discharge, emptying and construction diversion |
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| Country | Link |
|---|---|
| CN (1) | CN219972979U (en) |
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2023
- 2023-04-23 CN CN202320926913.0U patent/CN219972979U/en active Active
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