CN219825148U - Pumped storage power station reservoir arrangement structure for silt-rich river channel - Google Patents
Pumped storage power station reservoir arrangement structure for silt-rich river channel Download PDFInfo
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- CN219825148U CN219825148U CN202321094273.8U CN202321094273U CN219825148U CN 219825148 U CN219825148 U CN 219825148U CN 202321094273 U CN202321094273 U CN 202321094273U CN 219825148 U CN219825148 U CN 219825148U
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- water supplementing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 230000001502 supplementing effect Effects 0.000 claims abstract description 39
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 19
- 230000007704 transition Effects 0.000 claims description 9
- 239000004746 geotextile Substances 0.000 claims description 7
- 239000013049 sediment Substances 0.000 abstract description 12
- 239000004576 sand Substances 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
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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 pumped storage power station reservoir arrangement structure for a sediment-rich river channel, and belongs to the technical field of hydroelectric engineering. The utility model comprises a water retaining dam arranged in a river channel, wherein the upstream end and the downstream end of the water retaining dam are respectively abutted against the same side of the river bank of the river channel to form a reservoir in a surrounding way, an overflow dam is arranged at the part, close to the downstream end, of the water retaining dam, a water supplementing channel communicated with the river channel and the reservoir is arranged on the water retaining dam, a one-way valve is arranged in the water supplementing channel through a partition wall, and the opening direction of the one-way valve is from the river channel to the reservoir; one end of the water supplementing channel, which is close to the river, is communicated with the river through a water supplementing channel, and a permeable dike for transversely cutting off the water supplementing channel is arranged in the water supplementing channel. The water supplementing facility can effectively filter sand, effectively solve the problem of high sediment content, and supplement water when the river water level is higher than the reservoir water level, so that the reservoir capacity can be adjusted, and the engineering scale and investment can be reduced.
Description
Technical Field
The utility model relates to a pumped storage power station reservoir arrangement structure for a sediment-rich river channel, and belongs to the technical field of hydroelectric engineering.
Background
With the large-scale development of new energy sources such as wind power, photovoltaic and the like, a novel power system mainly comprising the new energy sources is gradually constructed, and the demand on flexible adjusting power supply is more urgent. The pumped storage power station has the functions of peak regulation, frequency modulation and the like, and can ensure the safety of a power system and promote the large-scale development and the digestion of energy sources.
The pumped storage power station generally comprises an upper reservoir, a lower reservoir, a water delivery tunnel, a power generation plant and the like. The upper and lower reservoirs generally need about millions or tens of millions of cubic meters of storage capacity, can be newly built into dams or excavated and filled into reservoirs, and under the general conditional condition, natural lakes or built reservoirs are preferably selected as the upper and lower reservoirs of the pumped storage power station. However, for a high sediment riverway or an established reservoir, the pumped storage power station has high requirements on the sediment content of the excess machine, so that the water inlet/outlet cannot be directly built in a natural riverway or an established reservoir, and a new challenge is presented to the arrangement of the pumped storage power station. In order to solve the problems, it is common practice to build an independent reservoir, that is, a reservoir dedicated for a pumped storage power station is formed by excavating or building a dam rail on the bank side of a natural river channel or an established reservoir, so that although the problem of high sediment content can be solved, the problem of water replenishment in the engineering operation period is solved by pumping water from the river channel or the established reservoir through a new special facility, and water can be pumped only in a period with low sediment content so as to supply water to the pumped storage power station reservoir, and the water replenishment period is limited.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the water pumping and energy storage power station reservoir arrangement structure for the silt-rich river channel can adapt to the silt-rich river channel and solve the problem of water supplement in the engineering operation period.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the water-pumping energy storage power station reservoir arrangement structure for the silt-rich river channel comprises a water retaining dam arranged in the river channel, wherein the upstream end and the downstream end of the water retaining dam are respectively connected with the same side river bank of the river channel to form a reservoir in a surrounding manner, an overflow dam is arranged at the position, close to the downstream end, of the water retaining dam, the water retaining dam is provided with a water supplementing channel communicated with the river channel and the reservoir, a one-way valve is arranged in the water supplementing channel through a partition wall, and the opening direction of the one-way valve is from the river channel to the reservoir; one end of the water supplementing channel, which is close to the river, is communicated with the river through a water supplementing channel, and a permeable dike for transversely cutting off the water supplementing channel is arranged in the water supplementing channel.
Further is: in the water flow direction from the river course to the reservoir, the permeable dike comprises a first rock-fill material structure layer, a second transition material structure layer, a first cushion material structure layer, a geotextile layer, a second cushion material structure layer, a second transition material structure layer and a second rock-fill material structure layer which are sequentially arranged.
Further is: the water supplementing channel and the overflow dam are arranged side by side, and share a diversion side wall; the water replenishing channel is arranged on one side closer to the upstream of the river than the position of the overflow dam in the river.
The beneficial effects of the utility model are as follows: in the running process of the hydropower station, when the river water level is higher than the reservoir water level, sediment is filtered after the river water flow passes through the permeable dike, and only clear water enters the water supplementing channel, and at the moment, the one-way valve arranged in the water supplementing channel is in an open state, so that water can be normally discharged; when the river water level is lower than the reservoir water level, the one-way valve is in a closed state and cannot normally pass water, so that the reservoir is ensured not to leak outside the reservoir; when the reservoir water level is higher than the normal water storage level, the redundant water overflows to the river channel through the overflow dam. The water supplementing facility can effectively filter sand, effectively solve the problem of high sediment content, and supplement water when the river water level is higher than the reservoir water level, so that the reservoir capacity can be adjusted, and the engineering scale and investment can be reduced.
Drawings
Fig. 1 is a schematic plan view of the present utility model.
FIG. 2 is a schematic view of section A-A of FIG. 1.
FIG. 3 is a schematic view of section B-B of FIG. 1.
Fig. 4 is a schematic view of the installation of the check valve.
The parts in the figure are marked with: 1-river channel, 2-retaining dam, 3-reservoir, 4-overflow dam, 5-partition wall, 6-check valve, 7-water supplementing canal, 8-permeable dam, 81-first rock-fill structure layer, 82-second transition material structure layer, 83-first bedding structure layer, 84-geotextile layer, 85-second bedding structure layer, 86-second transition material structure layer, 87-second rock-fill structure layer.
The arrows shown in the figure are the direction of water flow.
Detailed Description
For the purposes of facilitating understanding and practicing the utility model, preferred embodiments of the utility model are chosen to be further described in conjunction with the accompanying drawings.
As shown in fig. 1 to 4, the utility model comprises a retaining dam 2 arranged in a river channel 1, wherein the upstream end and the downstream end of the retaining dam 2 are respectively connected with the same side river bank of the river channel 1 to form a reservoir 3 in a surrounding way, an overflow dam 4 is arranged at the position, close to the downstream end, of the retaining dam 2, the retaining dam 2 is provided with a water supplementing channel communicated with the river channel 1 and the reservoir 3, a one-way valve 6 is arranged in the water supplementing channel through a partition wall 5, and the opening direction of the one-way valve 6 is from the river channel 1 to the reservoir 3; one end of the water supplementing channel, which is close to the river channel 1, is communicated with the river channel 1 through a water supplementing channel 7, and a permeable dike 8 for cutting off the water supplementing channel transversely (namely, perpendicular to the length direction of the water supplementing channel 7) is arranged in the water supplementing channel 7.
Wherein, the retaining dam 2 can be a concrete structure or a soil-stone structure, and the dam crest elevation is higher than the normal water storage level of the reservoir 3 according to the on-site geological conditions, construction conditions and the like. The overflow dam 4 is of a concrete structure, is of a conventional structure, has a weir top elevation which is the normal water storage level of the reservoir 3, and automatically overflows to the outside of the reservoir when the water level of the reservoir 3 exceeds the normal water storage level.
The utility model can be applied to both upper reservoir and lower reservoir. However, the upper reservoir is generally smaller in rain area, large rivers cannot be formed, and the serious sediment problem cannot occur, so that the upper reservoir is more suitable for the lower reservoir in practice. In the running process of the hydropower station, when the water level of the river channel 1 is higher than the water level of the reservoir 3, sediment is filtered after the water flow of the river channel 1 passes through the permeable dike 8, and only clear water enters the water supplementing channel, and at the moment, the one-way valve 7 arranged in the water supplementing channel is in an open state and can normally flow water; when the water level of the river channel 1 is lower than the water level of the reservoir 3, the one-way valve 7 is in a closed state and cannot normally pass water, so that the reservoir 3 is ensured not to leak outside the reservoir; when the water level of the reservoir 3 is higher than the normal water level, the excessive water overflows to the river channel 3 through the overflow dam 4.
The permeable dike 8 has the function of filtering sand, preferably a soil-stone structure, specifically, in the water flow direction from the river channel 1 to the reservoir 3, the permeable dike 8 comprises a first rock-fill structural layer 81, a second transition material structural layer 82, a first bedding structural layer 83, a geotextile layer 84 (such as geotextile), a second bedding structural layer 85, a second transition material structural layer 86 and a second rock-fill structural layer 87 which are sequentially arranged. Namely, the geotextile layer 84 is arranged in the middle, and then the cushion material structure layer, the transition material structure layer and the rock-fill material structure layer are sequentially arranged on two sides of the geotextile layer 84 from inside to outside.
The preferable arrangement scheme of the water supplementing channel 7 is as follows: the water supplementing channel 7 is arranged side by side with the overflow dam 4, and the two share a diversion side wall; the water replenishment channel 7 is provided on the side closer to the upstream of the river than the position of the overflow dam 4 in the river 1. On the one hand, the engineering investment can be saved, in addition, because the water supplementing channel 7 is also arranged in the downstream area, the water flow impact force received by the permeable dike 7 is smaller relative to the scheme that the water supplementing channel 7 is arranged in the upstream area, and sediment leading to the direction of the permeable dike 7 is less, so that the structure safety is facilitated.
Claims (3)
1. The utility model provides a pumped storage power station reservoir arrangement structure for many silt river course, is including locating in river course (1) retaining dam (2), upstream end, the downstream end of retaining dam (2) respectively with the same side bank joint of river course (1) in order to enclose and close and form reservoir (3), the position that retaining dam (2) is close to the downstream end is provided with overflow dam (4), its characterized in that: the retaining dam (2) is provided with a water supplementing channel communicated with the river channel (1) and the reservoir (3), a one-way valve (6) is arranged in the water supplementing channel through a partition wall (5), and the opening direction of the one-way valve (6) is from the river channel (1) to the reservoir (3); one end of the water supplementing channel, which is close to the river channel (1), is communicated with the river channel (1) through a water supplementing channel (7), and a water permeable dam (8) for transversely cutting off the water supplementing channel (7) is arranged in the water supplementing channel.
2. A pumped storage power station reservoir arrangement for a sediment-laden river as claimed in claim 1, wherein: in the water flow direction from the river channel (1) to the reservoir (3), the permeable dike (8) comprises a first rockfill material structure layer (81), a second transition material structure layer (82), a first cushion material structure layer (83), a geotextile layer (84), a second cushion material structure layer (85), a second transition material structure layer (86) and a second rockfill material structure layer (87) which are sequentially arranged.
3. A pumped storage power station reservoir arrangement for a silt rich river as claimed in claim 1 or claim 2 wherein: the water supplementing channel (7) and the overflow dam (4) are arranged side by side, and share a diversion side wall; the water supplementing channel (7) is arranged on one side which is closer to the upstream of the river compared with the position of the overflow dam (4) in the river (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321094273.8U CN219825148U (en) | 2023-05-09 | 2023-05-09 | Pumped storage power station reservoir arrangement structure for silt-rich river channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321094273.8U CN219825148U (en) | 2023-05-09 | 2023-05-09 | Pumped storage power station reservoir arrangement structure for silt-rich river channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219825148U true CN219825148U (en) | 2023-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321094273.8U Active CN219825148U (en) | 2023-05-09 | 2023-05-09 | Pumped storage power station reservoir arrangement structure for silt-rich river channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219825148U (en) |
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2023
- 2023-05-09 CN CN202321094273.8U patent/CN219825148U/en active Active
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