Whole-reservoir anti-seepage reservoir of pumped storage power station

Abstract

The invention provides a full-reservoir anti-seepage reservoir of a pumped storage power station, which adopts a closed structure and comprises a full-reservoir anti-seepage reservoir main body, reservoir basin anti-seepage structures, a reservoir water inlet / outlet, a wave wall, upright posts, a top cover and upper equipment facilities, the reservoir basin anti-seepage structure comprises a reservoir bottom anti-seepage structure and a reservoir slope anti-seepage structure; the top opening of the full-reservoir anti-seepage reservoir main body is completely sealed by the top cover; the top cover, the wave wall, the reservoir slope anti-seepage structure and the reservoir bottom anti-seepage structure define a closed structure. The upper equipment facility is arranged on the top cover. Due to the adoption of the closed structure, evaporation and freezing of reservoir water can be avoided, the scale of buildings is reduced, an anti-seepage structure is optimized, equipment and facilities are arranged on the reservoir surface, the reservoir water is used as cleaning and cooling water, land, water resources and engineering investment are saved, and wide guidance and popularization significance is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of hydropower and solar power generation, and in particular relates to a full-storage anti-seepage reservoir for a pumped-storage power station. Background Art

[0002] At present, all the anti-seepage reservoirs of pumped storage power stations are open-air, with a storage area of ​​at least hundreds of thousands of square meters. Due to sunlight exposure, cold invasion, etc., a large amount of reservoir water evaporates and freezes. The amount of water lost due to evaporation must be considered when replenishing the reservoir, and frozen storage capacity must be reserved in the total storage capacity; the anti-seepage structure of the reservoir basin must also adopt corresponding measures to avoid or reduce ultraviolet rays, thermal aging, high-temperature deformation, low-temperature freeze-thaw or freeze-break damage, such as: asphalt concrete panel, at least composed of a three-layer structure of leveling bonding layer, anti-seepage layer and sealing layer. The surface asphalt mastic sealing layer is mainly used to protect the anti-seepage layer from ultraviolet rays, air and the abrasion of sliding ice and snow. The anti-seepage layer in low-temperature areas uses modified asphalt concrete to avoid freeze-break damage of ordinary asphalt concrete. In high-temperature areas, a spray cooling system is set up around the entire reservoir to pass through a water film Cooling should be carried out to avoid high-temperature slope flow of the panel; for reinforced concrete panels, high frost resistance grade concrete must be selected (not less than F100 in mild areas, not less than F200 / F300 when the annual freeze-thaw cycle is less than / greater than 100 times in cold areas, and not less than F300 / F400 when the annual freeze-thaw cycle is less than / greater than 100 times in extremely cold areas) to avoid freeze-thaw damage, and a polymer material sealing layer should be set on the surface to reduce the saturation of concrete to avoid freeze-thaw and frost heave damage of the panel and freezing damage between the ice cover on the reservoir surface and the panel; for geomembranes, powders such as carbon black are added to the polymer to avoid aging and decomposition caused by ultraviolet rays, but usually uneven addition seriously affects the long-term performance of the geomembrane, and a covering layer is laid on the surface to reduce polymer degradation caused by accelerated cold and heat effects. In order to prevent large dirt from entering the unit due to wind, a trash rack must be installed in front of the reservoir inlet / outlet. The application of these measures requires a large amount of engineering investment and operation and maintenance costs, and directly affects the overall quality and operation safety of the anti-seepage system.

[0003] At the same time, solar power stations are newly built and operated and maintained separately. The photovoltaic components of photovoltaic power stations and the mirror layout of solar thermal power stations require a larger area, and a large amount of water is needed for cleaning and cooling. The randomness and intermittent nature of solar energy have a large fluctuation in power generation. Direct grid connection not only greatly affects the safe and stable operation of the power grid, but there is also a common phenomenon that the grid has to shut down when it cannot absorb the power. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a pumped storage power station with a full-storage anti-seepage reservoir, which can effectively solve the above problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The present invention provides a pumped storage power station full-storage anti-seepage reservoir, wherein the pumped storage power station full-storage anti-seepage reservoir adopts a closed structure, comprising a full-storage anti-seepage reservoir body, a reservoir basin anti-seepage structure (1), a reservoir inlet / outlet (2), a wave-breaking wall (3), a column (4), a top cover (5) and upper equipment facilities (6);

[0007] The reservoir basin anti-seepage structure (1) comprises a reservoir bottom anti-seepage structure (1.1) and a reservoir slope anti-seepage structure (1.2); the reservoir bottom anti-seepage structure (1.1) is laid on the reservoir bottom of the full reservoir anti-seepage reservoir body and completely covers the reservoir bottom; the reservoir slope anti-seepage structure (1.2) is laid on the reservoir slope of the full reservoir anti-seepage reservoir body and completely covers the reservoir slope;

[0008] A plurality of the columns (4) are evenly arranged on the reservoir bottom anti-seepage structure (1.1); a circle of wave-breaking walls (3) are continuously arranged on the reservoir top and the reservoir side of the dam top of the full-reservoir anti-seepage reservoir body, and the top surfaces of the wave-breaking walls (3) and the columns (4) are located at the same elevation;

[0009] The top cover (5) is arranged on the wave-breaking wall (3) and the column (4) to completely close the top opening of the whole reservoir anti-seepage reservoir body; the top cover (5), the wave-breaking wall (3), the reservoir slope anti-seepage structure (1.2) and the reservoir bottom anti-seepage structure (1.1) form a closed structure;

[0010] The reservoir inlet / outlet (2) which is in closed communication with the entire reservoir anti-seepage reservoir body is arranged below one side of the reservoir bottom anti-seepage structure (1.1); and the upper equipment facilities (6) are arranged on the top cover (5).

[0011] Preferably, the reservoir bottom anti-seepage structure (1.1) and the reservoir slope anti-seepage structure (1.2) are made of one or more materials selected from asphalt concrete panels, reinforced concrete panels, geomembranes and clay for anti-seepage;

[0012] Among them: the asphalt concrete panel is composed of only a leveling bonding layer and an anti-seepage layer, and there is no asphalt mastic sealing layer on the surface. The anti-seepage layer in low-temperature areas uses ordinary asphalt concrete, and there is no panel spray cooling system in high-temperature areas; the reinforced concrete panel uses concrete with a low antifreeze grade of F50, and there is no polymer material sealing layer on the surface; the geomembrane polymer used in the geomembrane does not contain carbon black powder particles that can resist ultraviolet rays, and there is no concrete block or sand layer covering layer on the surface to protect against sunlight.

[0013] Preferably, no trash rack is provided in front of the reservoir inlet / outlet (2).

[0014] Preferably, the wave-breaking wall (3) is a reinforced concrete structure.

[0015] Preferably, there are no less than 3 columns (4), which are made of reinforced concrete structure or steel structure, and the depth of the column bottom into the stable foundation surface of the reservoir basin is not less than 2m. They are evenly arranged in the reservoir and do not affect the normal operation of the reservoir inlet / outlet (2).

[0016] Preferably, the top cover (5) is a reinforced concrete slab-beam structure, and a movable cover (8) is provided at a corresponding position of the gate well of the reservoir inlet / outlet (2), and the movable cover (8) is only opened when the reservoir is inspected or maintained.

[0017] Preferably, the upper equipment facilities (6) include buildings and structures of a pumped-storage power station, and also include a solar power station (7) that is planned and constructed synchronously with the pumped-storage power station.

[0018] Preferably, the solar power station (7) is a photovoltaic power station or a solar thermal power station, which is operated in conjunction with the pumped-storage power station. Its power generation is used to meet the production and living electricity needs of the pumped-storage power station, including the pumping of water by the units. The excess power is then supplied to the power grid using the delivery system (9) of the pumped-storage power station.

[0019] Preferably, when the solar power station (7) is a photovoltaic power station, photovoltaic modules of the photovoltaic power station are laid on the surface of the solar power station foundation of the top cover (5); when the solar power station (7) is a solar thermal power station, a solar thermal power station mirror is laid on the surface of the solar power station foundation of the top cover (5);

[0020] A water pump (10) is arranged above the reservoir bottom anti-seepage structure (1.1) and near the gate well of the reservoir inlet / outlet (2); the water outlet end of the water pump (10) is connected to one end of a connecting pipe (11); the other end of the connecting pipe (11) passes through the top cover (5) and is connected to a water diversion pipeline with a nozzle arranged above the photovoltaic module of the photovoltaic power station or the mirror of the solar thermal power station;

[0021] The solar power station foundation has a confluence surface, and a centralized sedimentation and filtration pool (12) is arranged on the confluence side of the solar power station foundation and outside the top cover (5); the centralized sedimentation and filtration pool (12) is connected to the reservoir inlet and outlet pipes in front of the reservoir inlet / outlet (2) through pipes;

[0022] When the photovoltaic components of the photovoltaic power station or the mirror surface of the solar thermal power station of the solar power station (7) need to be cleaned and cooled, water is pumped from the reservoir basin of the pumped storage power station through the water pump (10) and the connecting pipe (11), and is directly sprayed onto the photovoltaic components of the photovoltaic power station or the mirror surface of the solar thermal power station through the nozzle of the water diversion pipeline; then, the sprayed water is converged into the centralized sedimentation and filtration pool (12), and after sedimentation and filtration in the centralized sedimentation and filtration pool (12), it flows back to the interior of the whole reservoir anti-seepage reservoir body through the pipeline.

[0023] The pumped storage power station provided by the present invention has the following advantages:

[0024] (1) It avoids evaporation and freezing of reservoir water. The reservoir does not consider the amount of water replenishment due to evaporation loss, and does not reserve freezing storage capacity, which greatly reduces the scale of the reservoir basin and water replenishment buildings. No waste enters the reservoir, and the trash rack in front of the reservoir inlet / outlet is eliminated.

[0025] (2) Measures to avoid or reduce thermal aging, high-temperature deformation, and low-temperature freeze-thaw and freeze-break damage to the reservoir basin anti-seepage structure have been eliminated, greatly optimizing the common anti-seepage structure types and material compositions. For example, the surface of the asphalt concrete panel does not have an asphalt mastic sealing layer, the anti-seepage layer in low-temperature areas uses ordinary asphalt concrete, and there is no panel spray cooling system in high-temperature areas; the reinforced concrete panel uses concrete with a low frost resistance grade of F50, and there is no polymer material sealing layer on the surface; the polymer of the geomembrane does not contain carbon black or other powder particles, and the surface is not covered with concrete blocks or sand layers to protect against sunlight.

[0026] (3) Make full use of the reservoir, arrange equipment and facilities of pumped-storage power stations and co-operated photovoltaic power generation projects or solar thermal power stations on the reservoir surface, and use the reservoir water as the required cleaning and cooling water.

[0027] (4) It has greatly saved land and water resources, improved the overall quality and operational safety of the reservoir anti-seepage system, and reduced the investment in a single project by tens of millions of yuan, which has broad guiding and promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a plan view below the reservoir top of a pumped storage power station of the present invention, showing a schematic diagram of a full-reservoir anti-seepage reservoir;

[0029] Figure 2 It is a plan view above the top cover of a pumped storage power station of the present invention, showing a schematic diagram of a full-storage anti-seepage reservoir;

[0030] Figure 3 It is a schematic A-A cross-sectional view of a pumped storage power station full reservoir anti-seepage reservoir of the present invention;

[0031] in:

[0032] 1- reservoir basin anti-seepage structure; 2- reservoir inlet / outlet; 3- wave-breaking wall; 4- column; 5- top cover; 6- upper equipment and facilities; 7- solar power station; 8- movable cover; 9- delivery system; 10- water pump; 11- connecting pipe; 12- sedimentation and filtration tank;

[0033] 1.1- Anti-seepage structure of reservoir bottom; 1.2- Anti-seepage structure of reservoir slope. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] The purpose of the present invention is to provide a pumped storage power station with a full-storage anti-seepage reservoir. By covering the reservoir roof, the frozen storage capacity and trash racks of the reservoir can be eliminated, while the amount of water replenishment can be reduced, thereby greatly reducing the project investment. At the same time, a joint construction and inter-operation solar power station is arranged on the reservoir surface, and the reservoir water is used as cleaning and cooling water. The power generated is consumed locally first, and the remaining power is bundled and sent out, thus saving land and water resources, improving the utilization rate of power generation and transmission systems, reducing the impact of solar power generation volatility on the safe and stable operation of the power grid, and reducing power system standby and project investment.

[0036] refer to Figure 1 to Figure 3 The present invention provides a pumped storage power station full reservoir anti-seepage reservoir, the pumped storage power station full reservoir anti-seepage reservoir adopts a closed structure, including a full reservoir anti-seepage reservoir body, a reservoir basin anti-seepage structure 1, a reservoir inlet / outlet 2, a wave-breaking wall 3, a column 4, a top cover 5 and upper equipment facilities 6;

[0037] The reservoir basin anti-seepage structure 1 includes a reservoir bottom anti-seepage structure 1.1 and a reservoir slope anti-seepage structure 1.2; the reservoir bottom anti-seepage structure 1.1 is laid on the reservoir bottom of the whole reservoir anti-seepage reservoir body and completely covers the reservoir bottom; the reservoir slope anti-seepage structure 1.2 is laid on the reservoir slope of the whole reservoir anti-seepage reservoir body and completely covers the reservoir slope;

[0038] On the top of the reservoir bottom anti-seepage structure 1.1, a number of columns 4 are evenly arranged; a circle of wave-breaking walls 3 are continuously arranged on the reservoir top and the reservoir side of the dam top of the whole reservoir anti-seepage reservoir body, and the top surfaces of the wave-breaking walls 3 and the columns 4 are at the same elevation;

[0039] A top cover 5 is arranged above the wave-breaking wall 3 and the column 4 to completely close the top opening of the entire reservoir anti-seepage reservoir body; the top cover 5, the wave-breaking wall 3, the reservoir slope anti-seepage structure 1.2 and the reservoir bottom anti-seepage structure 1.1 form a closed structure;

[0040] A reservoir inlet / outlet 2 which is in closed communication with the entire reservoir body is arranged below one side of the reservoir bottom anti-seepage structure 1.1; upper equipment facilities 6 are arranged on the top cover 5.

[0041] It can be seen that the pumped storage power station provided by the present invention has a fully enclosed structure formed by the reservoir basin anti-seepage structure 1, the wave-breaking wall 3 and the top cover 5, rather than the open-air structure in the prior art, and the top cover 5 is a reinforced concrete slab-beam structure, and upper equipment facilities 6 are arranged above the top cover 5, which brings the following advantages:

[0042] (1) Due to the fully enclosed structure, the evaporation of reservoir water can be effectively reduced, and the evaporation of reservoir water does not need to be considered in the reservoir design;

[0043] (2) Due to the fully enclosed structure, the top cover 5 is a reinforced concrete slab-beam structure, combined with the isolation effect of the upper equipment facilities 6 above the top cover 5, it can effectively insulate the interior of the reservoir in low temperature weather. When the pumped storage power station is operating normally, the interior of the reservoir will not freeze. Therefore, the reservoir design does not need to consider the freezing loss of reservoir water.

[0044] Similarly, due to the above structural features of the present invention, it can have a cooling and heat-insulating effect on the interior of the warehouse during hot weather.

[0045] Furthermore, since the inside of the reservoir will not freeze in low temperature weather and has a cooling effect in high temperature weather, and since the closed structure can prevent ultraviolet rays from irradiating the reservoir basin anti-seepage structure 1, the structure adopted by the present invention can significantly reduce the performance requirements for the anti-seepage layer of the reservoir basin anti-seepage structure 1, thereby reducing costs.

[0046] In the present invention, the reservoir bottom anti-seepage structure 1.1 and the reservoir slope anti-seepage structure 1.2 can be made of one or more materials selected from asphalt concrete panels, reinforced concrete panels, geomembranes and clay for anti-seepage; and connected to the reservoir inlet / outlet 2 to form a closed whole-reservoir anti-seepage system.

[0047] Among them: because the anti-seepage layer will not be affected by ultraviolet rays, air and the abrasion of sliding ice and snow, the asphalt concrete panel in the present invention is only composed of a leveling bonding layer and an anti-seepage layer, and the surface layer does not have an asphalt mastic sealing layer, which can fully meet the performance requirements.

[0048] In low-temperature areas, due to the heat preservation effect of the invention in the warehouse, the anti-seepage layer in low-temperature areas can be made of ordinary asphalt concrete, which will not be damaged by freezing, and there is no need to use modified asphalt concrete;

[0049] Since this structure can cool down and insulate the interior of the warehouse in hot weather, the panel spray cooling system is not installed in high temperature areas;

[0050] To sum up, when asphalt concrete panels are used, the asphalt concrete panels are only composed of a leveling bonding layer and an anti-seepage layer, and no asphalt mastic sealing layer is provided on the surface. The anti-seepage layer in low-temperature areas uses ordinary asphalt concrete, and no panel spray cooling system is provided in high-temperature areas.

[0051] When reinforced concrete panels are used, concrete with a low frost resistance grade of F50 is used for the reinforced concrete panels, and no polymer material sealing layer is provided on the surface; when geomembranes are used, the geomembrane polymers used in the geomembrane do not contain powders such as carbon black that can resist ultraviolet rays, and no covering layers such as concrete blocks or sand layers are provided on the surface to protect against sunlight.

[0052] In the present invention, no trash rack is provided in front of the water inlet / outlet 2 of the reservoir.

[0053] In the present invention, the wave-breaking wall 3 is a reinforced concrete structure and is continuously arranged along the reservoir top and the reservoir side of the dam top.

[0054] In the present invention, there are no less than 3 columns 4, which adopt reinforced concrete structure or steel structure, and the depth of the column bottom into the stable foundation surface of the reservoir basin is not less than 2m. They are evenly arranged in the reservoir and do not affect the normal operation of the reservoir inlet / outlet 2.

[0055] The top cover 5 is a reinforced concrete slab-beam structure, and a movable cover plate 8 is provided at a corresponding position of the gate well of the reservoir inlet / outlet 2. The movable cover plate 8 is only opened when the reservoir is inspected or repaired.

[0056] The upper equipment facilities 6 are located on the top cover 5, including the buildings and structures of the pumped-storage power station, such as the duty room, observation room, switch station and other buildings (structures) of the pumped-storage power station; and also include the equipment facilities of the solar power station 7 planned and constructed synchronously with the pumped-storage power station.

[0057] The solar power station 7 is a photovoltaic power station or a solar thermal power station, which is operated in conjunction with a pumped-storage power station. Its power generation is used to meet the production and living electricity needs of the pumped-storage power station, including pumping water, and the excess is then supplied to the power grid using the delivery system 9 of the pumped-storage power station.

[0058] When the solar power station 7 is a photovoltaic power station, photovoltaic modules of the photovoltaic power station are laid on the surface of the solar power station foundation of the top cover 5; when the solar power station 7 is a solar thermal power station, a solar thermal power station mirror is laid on the surface of the solar power station foundation of the top cover 5;

[0059] A water pump 10 is arranged above the reservoir bottom anti-seepage structure 1.1 and near the gate well of the reservoir inlet / outlet 2; the water outlet end of the water pump 10 is connected to one end of a connecting pipe 11; the other end of the connecting pipe 11 passes through the top cover 5 and is connected to a water diversion pipeline with a nozzle arranged above the photovoltaic module of the photovoltaic power station or the mirror surface of the solar thermal power station;

[0060] The foundation of the solar power station has a confluence surface. A centralized sedimentation and filtration pool 12 is arranged on the confluence side of the foundation of the solar power station and outside the top cover 5. The centralized sedimentation and filtration pool 12 is connected to the reservoir inlet and outlet pipes in front of the reservoir inlet / outlet 2 through pipes.

[0061] When the photovoltaic modules of the photovoltaic power station or the mirror of the solar thermal power station of the solar power station 7 need to be cleaned and cooled, water is pumped from the reservoir basin of the pumped storage power station through the water pump 10 and the connecting pipe 11, and is sprayed directly onto the photovoltaic modules of the photovoltaic power station or the mirror of the solar thermal power station through the nozzle of the water diversion pipeline; then, the sprayed water converges into the centralized sedimentation and filtration tank 12, and after sedimentation and filtration in the centralized sedimentation and filtration tank 12, it flows back to the interior of the whole reservoir anti-seepage reservoir through the pipeline.

[0062] Therefore, the cleaning and cooling water required by the solar power station 7, such as the cleaning and cooling water for photovoltaic modules of the photovoltaic power station or the mirrors of the solar thermal power station, is all drawn from the reservoir basin of the pumped-storage power station through the water pump 10 and the connecting pipe 11 arranged at the bottom of the reservoir, and after use, it is converged into the centralized sedimentation and filtration tank 12 for treatment and then flows back to the reservoir.

[0063] Therefore, the pumped-storage power station provided by the present invention has a full-storage anti-seepage reservoir, which makes full use of the reservoir. The equipment and facilities of the pumped-storage power station and the photovoltaic power generation project or the solar thermal power station are arranged on the reservoir surface, so that the pumped-storage power station and the photovoltaic power generation project or the solar thermal power station are jointly built and operated, which has the following advantages: (1) The photovoltaic power generation project or the solar thermal power station is arranged above the full-storage anti-seepage reservoir of the pumped-storage power station, which can save land resources; (2) The photovoltaic power generation project or the solar thermal power station and the pumped-storage power station share the same facilities and buildings, such as the delivery system, etc., thereby reducing Low overall cost; (3) Reservoir water is directly used as cleaning and cooling water for photovoltaic power generation projects or solar thermal power stations. Since the reservoir water is very close to the photovoltaic power generation project or solar thermal power station, it can save water resources and reduce the amount and cost of pipeline laying. (4) Pumped storage power stations and photovoltaic power generation projects or solar thermal power stations generate electricity together. The power generated by the photovoltaic power generation project or solar thermal power station is consumed locally first, and the remaining power is bundled and sent out together, reducing the impact of solar power generation volatility on the safe and stable operation of the power grid and reducing power system backup and project investment.

[0064] The following is a further explanation of the full-storage anti-seepage upper reservoir of a pumped storage power station using the technical solution of the present invention in conjunction with the accompanying drawings as an example:

[0065] like Figure 1 to Figure 3As shown, the upper reservoir of a pumped storage power station is located in an area with severe cold in winter and scorching heat in summer. In the open-air design, the annual loss of reservoir water due to evaporation is 700,000 cubic meters, and the loss of storage capacity due to freezing is 300,000 cubic meters. After adopting the closed structure proposed by the present invention, which is composed of a reservoir basin anti-seepage structure 1, a reservoir inlet / outlet 2, a wave-breaking wall 3, a column 4, a top cover 5 and upper equipment and facilities 6, the evaporation and freezing of reservoir water are avoided, and there is no need to consider the corresponding water replenishment amount and frozen storage capacity, which greatly reduces the scale of the reservoir basin and water replenishment buildings.

[0066] The reservoir basin anti-seepage structure 1 includes the reservoir bottom anti-seepage structure 1.1 and the reservoir slope anti-seepage structure 1.2, which adopts a combination of geomembrane and asphalt concrete panel for anti-seepage, and is sealed and connected with the reservoir inlet / outlet 2 to form a closed whole reservoir anti-seepage system. The polymer of the reservoir bottom geomembrane does not contain carbon black and other powder particles, and there is no covering layer on the surface to prevent sunlight; the reservoir slope asphalt concrete panel is only composed of an 8cm thick leveling cementing layer and a 10cm thick anti-seepage layer. The anti-seepage layer is all made of ordinary asphalt concrete, and its surface is not provided with an asphalt mastic sealing layer and a panel spray cooling system.

[0067] There is no trash rack in front of the reservoir inlet / outlet 2. The wave-breaking wall 3 is a continuous reinforced concrete structure with a thickness of 50 cm, which is continuously arranged along the reservoir top and the reservoir side of the dam top. The columns 4 are reinforced concrete cylinders, a total of 6, and the bottom of the columns is 3m deep under the stable foundation of the reservoir basin. They are evenly arranged in the reservoir and will not affect the normal operation of the reservoir inlet / outlet 2. The top cover 5 is located on the wave-breaking wall 3 and the columns 4, and adopts a reinforced concrete slab-beam structure. A rectangular movable cover 8 is set at the corresponding position of the gate well of the reservoir inlet / outlet 2, which is only opened when the reservoir is inspected or repaired.

[0068] The upper equipment and facilities 6 are arranged on the top cover 5. In addition to the duty room, observation room, switch station and other buildings (structures) of the pumped storage power station, there are photovoltaic equipment and facilities such as the solar power station 7 planned and constructed simultaneously with the pumped storage power station, mainly photovoltaic modules, junction boxes, inverters, etc. The water for cleaning the photovoltaic modules is all drawn from the reservoir of the pumped storage power station through water pumps and pipes, and then flows back to the reservoir after treatment after use. The photovoltaic power station and the pumped storage power station are jointly operated, and their power generation is first used to meet the production and living electricity needs of the pumped storage power station, and the excess is then supplied to the power grid by the delivery system 9 of the pumped storage power station.

[0069] By adopting the above technical solution disclosed in the present invention, the following beneficial effects are obtained:

[0070] (1) It avoids evaporation and freezing of reservoir water. The reservoir does not consider the amount of water replenishment due to evaporation loss, and does not reserve freezing storage capacity, which greatly reduces the scale of the reservoir basin and water replenishment buildings. No waste enters the reservoir, and the trash rack in front of the reservoir inlet / outlet is eliminated.

[0071] (2) Measures to avoid or reduce thermal aging, high-temperature deformation, and low-temperature freeze-thaw and freeze-break damage to the reservoir basin anti-seepage structure have been eliminated, greatly optimizing the common anti-seepage structure types and material compositions. For example, the surface of the asphalt concrete panel does not have an asphalt mastic sealing layer, the anti-seepage layer in low-temperature areas uses ordinary asphalt concrete, and there is no panel spray cooling system in high-temperature areas; the reinforced concrete panel uses concrete with a low frost resistance grade of F50, and there is no polymer material sealing layer on the surface; the polymer of the geomembrane does not contain carbon black or other powder particles, and the surface is not covered with concrete blocks or sand layers to protect against sunlight.

[0072] (3) Make full use of the reservoir, arrange equipment and facilities of pumped-storage power stations and co-operated photovoltaic power generation projects or solar thermal power stations on the reservoir surface, and use the reservoir water as the required cleaning and cooling water.

[0073] (4) It has greatly saved land and water resources, improved the overall quality and operational safety of the reservoir anti-seepage system, and reduced the investment in a single project by tens of millions of yuan, which has broad guiding and promotion significance.

[0074] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. A pumped storage power station full reservoir anti-seepage reservoir, characterized in that: The pumped storage power station full-storage anti-seepage reservoir adopts a closed structure, including a full-storage anti-seepage reservoir body, a reservoir basin anti-seepage structure (1), a reservoir inlet / outlet (2), a wave-breaking wall (3), a column (4), a top cover (5) and upper equipment and facilities (6); The reservoir basin anti-seepage structure (1) comprises a reservoir bottom anti-seepage structure (1.1) and a reservoir slope anti-seepage structure (1.2); the reservoir bottom anti-seepage structure (1.1) is laid on the reservoir bottom of the full reservoir anti-seepage reservoir body and completely covers the reservoir bottom; the reservoir slope anti-seepage structure (1.2) is laid on the reservoir slope of the full reservoir anti-seepage reservoir body and completely covers the reservoir slope; A plurality of the columns (4) are evenly arranged on the reservoir bottom anti-seepage structure (1.1); a circle of wave-breaking walls (3) are continuously arranged on the reservoir top and the reservoir side of the dam top of the full-reservoir anti-seepage reservoir body, and the top surfaces of the wave-breaking walls (3) and the columns (4) are located at the same elevation; The top cover (5) is arranged on the wave-breaking wall (3) and the column (4) to completely close the top opening of the whole reservoir anti-seepage reservoir body; the top cover (5), the wave-breaking wall (3), the reservoir slope anti-seepage structure (1.2) and the reservoir bottom anti-seepage structure (1.1) form a closed structure; The reservoir inlet / outlet (2) which is in closed communication with the entire reservoir anti-seepage reservoir body is arranged below one side of the reservoir bottom anti-seepage structure (1.1); and the upper equipment facilities (6) are arranged on the top cover (5).

2. A pumped storage power station full reservoir anti-seepage reservoir according to claim 1, characterized in that: The reservoir bottom anti-seepage structure (1.1) and the reservoir slope anti-seepage structure (1.2) are anti-seepage using a combination of one or more materials selected from asphalt concrete panels, reinforced concrete panels, geomembranes and clay; Among them: the asphalt concrete panel is composed of only a leveling bonding layer and an anti-seepage layer, and there is no asphalt mastic sealing layer on the surface. The anti-seepage layer in low-temperature areas uses ordinary asphalt concrete, and there is no panel spray cooling system in high-temperature areas; the reinforced concrete panel uses concrete with a low antifreeze grade of F50, and there is no polymer material sealing layer on the surface; the geomembrane polymer used in the geomembrane does not contain carbon black powder particles that can resist ultraviolet rays, and there is no concrete block or sand layer covering layer on the surface to protect against sunlight.

3. A pumped storage power station full reservoir anti-seepage reservoir according to claim 1, characterized in that: No trash rack is provided in front of the reservoir inlet / outlet (2).

4. A pumped storage power station full reservoir anti-seepage reservoir according to claim 1, characterized in that: The wave-breaking wall (3) is a reinforced concrete structure.

5. A pumped storage power station full reservoir anti-seepage reservoir according to claim 1, characterized in that: The number of the columns (4) is no less than 3, and they are made of reinforced concrete or steel structure. The depth of the bottom of the columns is not less than 2m into the stable foundation surface of the reservoir basin. The columns are evenly arranged in the reservoir and do not affect the normal operation of the reservoir inlet / outlet (2).

6. A pumped storage power station full reservoir anti-seepage reservoir according to claim 1, characterized in that: The top cover (5) is a reinforced concrete slab-beam structure, and a movable cover plate (8) is provided at a corresponding position of the gate well of the reservoir inlet / outlet (2), and the movable cover plate (8) is only opened when the reservoir is inspected or repaired.

7. A pumped storage power station full reservoir anti-seepage reservoir according to claim 1, characterized in that: The upper equipment facilities (6) include buildings and structures of the pumped-storage power station, and also include a solar power station (7) that is planned and constructed synchronously with the pumped-storage power station.

8. A pumped storage power station full-storage anti-seepage reservoir according to claim 7, characterized in that: The solar power station (7) is a photovoltaic power station or a solar thermal power station, which is operated in conjunction with the pumped storage power station. Its power generation is used to meet the production and living electricity needs of the pumped storage power station, including the pumping of water by the units. The excess power is then supplied to the power grid using the delivery system (9) of the pumped storage power station.

9. A pumped storage power station full reservoir anti-seepage reservoir according to claim 7, characterized in that: When the solar power station (7) is a photovoltaic power station, photovoltaic modules of the photovoltaic power station are laid on the surface of the solar power station foundation of the top cover (5); when the solar power station (7) is a solar thermal power station, a solar thermal power station mirror is laid on the surface of the solar power station foundation of the top cover (5); A water pump (10) is arranged above the reservoir bottom anti-seepage structure (1.1) and near the gate well of the reservoir inlet / outlet (2); the water outlet end of the water pump (10) is connected to one end of a connecting pipe (11); the other end of the connecting pipe (11) passes through the top cover (5) and is connected to a water diversion pipeline with a nozzle arranged above the photovoltaic module of the photovoltaic power station or the mirror of the solar thermal power station; The solar power station foundation has a confluence surface, and a centralized sedimentation and filtration pool (12) is arranged on the confluence side of the solar power station foundation and outside the top cover (5); the centralized sedimentation and filtration pool (12) is connected to the reservoir inlet and outlet pipes in front of the reservoir inlet / outlet (2) through pipes; When the photovoltaic components of the photovoltaic power station or the mirror surface of the solar thermal power station of the solar power station (7) need to be cleaned and cooled, water is pumped from the reservoir basin of the pumped storage power station through the water pump (10) and the connecting pipe (11), and is directly sprayed onto the photovoltaic components of the photovoltaic power station or the mirror surface of the solar thermal power station through the nozzle of the water diversion pipeline; then, the sprayed water is converged into the centralized sedimentation and filtration pool (12), and after sedimentation and filtration in the centralized sedimentation and filtration pool (12), it flows back to the interior of the whole reservoir anti-seepage reservoir body through the pipeline.

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