CN114541346A - System and method for carrying out water pumping and energy storage by combining subsidence area and underground space of coal mine - Google Patents
System and method for carrying out water pumping and energy storage by combining subsidence area and underground space of coal mine Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 239000003245 coal Substances 0.000 title claims abstract description 42
- 238000005086 pumping Methods 0.000 title claims abstract description 24
- 238000004146 energy storage Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/16—Modification of mine passages or chambers for storage purposes, especially for liquids or gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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Abstract
The invention discloses a system and a method for carrying out water pumping and energy storage by utilizing a collapse area and a coal mine underground space in a combined manner, which comprises an upper reservoir, a lower reservoir arranged below the upper reservoir, a workshop chamber for water pumping and energy storage, a diversion tunnel, a tail water tunnel, a pressure regulating chamber, a trash rack for filtering sundries and a ventilation and transportation system, can be matched with a new energy power system, provides multiple services of peak regulation and valley filling, frequency regulation, phase regulation, emergency accident standby and the like for a power grid, promotes the development of new energy, can effectively utilize the coal mine ground collapse area, the underground space and the natural terrain difference between the coal mine ground collapse area and the underground space, improves the development utilization rate of mine resources, provides a path of transition type escaping and sustainable development for closing a mine, can effectively utilize original facilities of roads, sites, water supply, water drainage, power supply, ventilation, detection and the like of a coal mine shaft engineering and mine area, reducing engineering cost and land charge.
Description
Technical Field
The invention relates to the technical field of coal mine subsidence area treatment, coal mine underground space retreating and new energy application, in particular to a system and a method for pumping water and storing energy by combining a coal mine ground subsidence area and an underground space.
Background
With the proposal of constructing a clean, low-carbon, safe and efficient energy system and constructing an electric power system mainly using clean energy in China, new energy is inevitably and rapidly developed. In order to promote new energy consumption, enhance the system regulation capability and keep the system stably running, a large amount of clean energy storage facilities need to be configured.
The pumped storage power station realizes energy storage and power generation by utilizing potential energy of water formed by the height difference of an upper reservoir and a lower reservoir, is the most mature and economic peak regulation and large-scale energy storage power supply in the current accepted technology, can well adapt to the load change of a power system, improves the operating conditions of a power unit, provides multiple services such as peak regulation and valley filling, frequency modulation, phase modulation, emergency accident standby and the like for a power grid, and improves the power supply quality, the operating reliability and the economic benefit of the power grid.
Under the influence of national energy policy regulation or exhaustion of coal resources, many coal mines are being or will be shut down and quit. After the mine is closed, a large amount of underground space resources are left. The underground space is reasonably developed and utilized, so that the resource waste can be reduced, waste is turned into wealth, the development and utilization rate of mine resources is improved, and a transformation, sleepiness removal and sustainable development way is provided for closing a mine.
Since the seventies of the last century, the idea of constructing pumped-storage power stations with exiting mines has been proposed. Because the metal mine or the salt cavern is positioned in an invaded rock stratum or a metamorphic rock stratum, the surrounding rock has high strength and low permeability, and the water storage performance is superior to that of the surrounding rock of a coal mine roadway mainly comprising sedimentary rock, the metal mine or the salt cavern is mostly used for building pumped storage power stations at home and abroad. Up to now, no engineering example exists for quitting the coal mine construction.
The pumping energy storage is realized by reasonably utilizing the ground subsidence area and the underground space of the coal mine and the fall between the ground subsidence area and the underground space, the new energy power system can be matched, multiple services such as peak load regulation, valley load regulation, frequency modulation, phase modulation and emergency accident standby are provided for a power grid, the development of new energy is promoted, and a new development direction is provided for underground space utilization of a quit mine, mine water treatment and ground subsidence area comprehensive treatment.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a system and a method for pumping water and storing energy by combining a subsidence area and an underground space of a coal mine, which can be matched with a new energy power system, provide multiple services such as peak load regulation, valley load regulation, phase regulation, emergency accident standby and the like for a power grid, promote the development of new energy, and provide a new development direction for underground space utilization of a quit mine, treatment of mine water and comprehensive treatment of a ground subsidence area.
In order to solve the technical problems, the invention provides the following technical scheme: a system and a method for carrying out water pumping and energy storage by combining a subsidence area and an underground space of a coal mine comprise an upper reservoir, a lower reservoir arranged below the upper reservoir, a workshop chamber for water pumping and energy storage, a diversion tunnel, a tail water tunnel, a pressure regulating chamber, a trash rack for filtering sundries and a ventilation and transportation system; the system comprises an upper reservoir, a lower reservoir, a workshop chamber, a diversion tunnel, a pressure regulating chamber, a tail water tunnel, a sewage barrier, a diversion tunnel, a tail water tunnel, a drainage tunnel, a tail water tunnel and a collecting space, wherein the upper reservoir is a reinforced coal mine ground subsidence area, the lower reservoir is a withdrawn underground tunnel, the workshop chamber is arranged between the upper reservoir and the lower reservoir and is formed by expanding the underground mine shaft yard tunnel and the chamber, the workshop chamber is internally provided with a reversible water pumping and energy storage unit for pumping water and storing energy, the pressure regulating chamber is arranged on the diversion tunnel at the upstream of the workshop chamber or the tail water tunnel at the downstream of the workshop chamber, and the sewage barrier is arranged at the connecting port of the diversion tunnel and the upper reservoir and the connecting port of the tail water tunnel and the lower reservoir; one end of the diversion tunnel is communicated with the upper reservoir, the other end of the diversion tunnel is communicated with one end of the workshop chamber, one end of the tail water tunnel is communicated with the other end of the workshop chamber, the other end of the tail water tunnel is communicated with the lower reservoir, the ventilation and transportation system is formed by rebuilding and expanding the withdrawn underground coal mine shaft and the accessory tunnel, one end of the ventilation and transportation system is communicated with the workshop chamber, the other end of the ventilation and transportation system is communicated with the ground and is higher than the ground, and the ventilation and transportation system is used for ventilating the workshop chamber and the ground and transporting pedestrians and equipment.
As a preferable technical scheme of the invention, the dead water level of the upper reservoir is higher than the highest water level of the lower reservoir.
As a preferred technical scheme of the invention, the bottom and the edge of the upper reservoir adopt reinforcement and seepage-proofing protection measures.
As a preferred technical scheme of the invention, the lower reservoir needs to take reinforcement and sealing protection measures.
As a preferred technical scheme of the invention, the workshop chamber is reconstructed from a shaft bottom yard roadway or chamber of a well coal mine.
In a preferred embodiment of the present invention, the upper reservoir is a ground water system as a supplementary water source, and the lower reservoir is an underground water burst as a supplementary water source.
As a preferable technical scheme of the invention, the top of the pressure adjusting chamber is communicated with an exhaust pipe which is directly communicated with the ground and is higher than the ground.
The method for performing pumped storage by combining the coal mine ground subsidence area with the underground space is based on the system for performing pumped storage by combining the coal mine ground subsidence area with the underground space, and comprises the following steps of:
the first step is as follows: the method comprises the following steps of (1) storing redundant water in a lower reservoir from underground water burst as a supplementary water source or through an upper reservoir in rainy season through a water pumping and energy storing unit for later use, and reserving a solution space in the upper reservoir for storing water in the lower reservoir after the water is pumped to the upper reservoir;
the second step is that: when the power supply of a nearby power grid is larger than the demand and the electric power system has excess electric quantity, inputting the valley electric energy or the excess electric energy into the plant chamber, driving a reversible water-pumping energy storage unit in the plant chamber to be electrified, pumping water in a lower reservoir into an upper reservoir, converting the excess valley electric energy into the gravitational potential energy of the water, and finishing the accumulated water energy storage of the upper reservoir;
the third step: when the electric energy supply of a nearby power grid is not in short demand and the electric power system is in a power utilization peak, the diversion tunnel of the upper reservoir is opened, and water flows through the plant chamber along the diversion tunnel under the action of gravity and enters the lower reservoir through the tail water tunnel. When the water flows through the workshop chamber, the upper reservoir water drives a reversible pumped storage unit in the workshop chamber to generate electricity by utilizing the gravitational potential energy, and the gravitational potential energy of the water is converted into electric energy to be sent back to the power grid;
the fourth step: and repeating the second step and the third step to realize pumped storage circulation.
Compared with the prior art, the invention can achieve the following beneficial effects:
1. the invention can be matched with a new energy power system, provides multiple services of peak load regulation, frequency modulation, phase modulation, emergency accident standby and the like for a power grid, and promotes the development of new energy.
2. The invention can effectively utilize the natural topography difference between the ground subsidence area and the underground space of the coal mine and between the ground subsidence area and the underground space, improve the development and utilization rate of mine resources and provide a transformation, difficulty removal and sustainable development way for closing the mine.
3. The invention can effectively utilize original facilities and equipment of roads, fields, water supply, drainage, power supply, ventilation, detection and the like in the coal mine roadway engineering and mining areas, and reduce the engineering cost and the land acquisition cost.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1. an upper reservoir; 2. a lower reservoir; 3. a plant room; 4. a diversion tunnel; 5. a tailwater tunnel; 6. a pressure regulating chamber; 7. a trash rack; 8. ventilation and transportation systems.
Detailed Description
The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example (b):
as shown in fig. 1, the invention provides a system for performing pumped storage by combining a subsidence area with an underground space of a coal mine, which comprises an upper reservoir 1, a lower reservoir 2 arranged below the upper reservoir 1, a factory building chamber 3 for pumped storage, a diversion tunnel 4, a tailwater tunnel 5, a pressure regulating chamber 6, a trash rack 7 for filtering sundries and a ventilation and transportation system 8; the system comprises an upper reservoir 1, a lower reservoir 2, a workshop chamber 3, a pressure regulating chamber 6, a sewage barrier 7, a diversion tunnel 4, a tail water tunnel 5 and a drainage reservoir 2, wherein the upper reservoir 1 is a reinforced coal mine ground subsidence area, the lower reservoir 2 is a withdrawn underground tunnel, a chamber and a goaf of a underground mine, the workshop chamber 3 is arranged between the upper reservoir 1 and the lower reservoir 2 and is formed by expanding a underground station tunnel and the chamber of the underground coal mine, the workshop chamber 3 is internally provided with a reversible water pumping energy storage unit for pumping water and storing energy, the pressure regulating chamber 6 is arranged on the diversion tunnel 4 at the upstream of the workshop chamber 3 or on the tail water tunnel 5 at the downstream of the workshop chamber 3, and the sewage barrier 7 is arranged at a connecting port of the diversion tunnel 4 and the upper reservoir 1 and a connecting port of the tail water tunnel 5 and the lower reservoir 2; one end of a diversion tunnel 4 is communicated with the upper reservoir 1, the other end of the diversion tunnel is communicated with one end of a factory building chamber 3, one end of a tail water tunnel 5 is communicated with the other end of the factory building chamber 3, the other end of the tail water tunnel is communicated with a lower reservoir 2, a ventilation and transportation system 8 is formed by rebuilding and expanding a withdrawn underground coal mine shaft and an auxiliary roadway, one end of the ventilation and transportation system is communicated with the factory building chamber 3, the other end of the ventilation and transportation system is communicated with the ground and is higher than the ground, and the ventilation and transportation system is used for ventilating the factory building chamber 3 and the ground and transporting pedestrians and equipment.
Preferably, the dead water level of the upper reservoir 1 is higher than the highest water level of the lower reservoir 2, so that the water in the upper reservoir 1 and the lower reservoir 2 are ensured to have a fall, and the water in the upper reservoir 1 at the high position is in an energy storage state.
Preferably, reinforcing and seepage-proofing protection measures are taken at the bottom and the side of the upper reservoir 1, reinforcing and sealing protection measures are taken at the lower reservoir 2, reinforcing and seepage-proofing protection measures are taken at the bottom and the side of the upper reservoir 1, so that the strength of a bank slope during water storage is improved, water in the upper reservoir 1 is prevented from permeating downwards, a sufficient water source in the upper reservoir 1 is ensured, reinforcing and sealing protection measures are taken at the lower reservoir 2, the lower reservoir 2 is sealed, underground water can be prevented from permeating into the lower reservoir 2, the effective volume of the lower reservoir 2 is reduced, and the reduction of the power generation capacity of the pumped storage power station is prevented.
Preferably, the workshop chamber 3 is formed by reconstructing a shaft bottom yard roadway or chamber of a well-working coal mine, and the original systems of power supply, drainage, lifting and the like of the coal mine are fully utilized.
Preferably, the upper reservoir 1 is a ground water system (such as rainwater and treated domestic water) as a supplementary water source, the lower reservoir 2 is an underground water burst as a main supplementary water source, and in rainy season, redundant water in the upper reservoir 1 can be stored into the lower reservoir 2 through the pumped storage unit for standby.
Preferably, the top of the pressure regulating chamber 6 is communicated with an exhaust pipe which is directly communicated with the ground and is higher than the ground, and the exhaust pipe is used for ventilating the pressure regulating chamber 6 and the ground.
The invention provides a system for performing pumped storage by combining a coal mine ground subsidence area and an underground space, which comprises the following steps of: the first step is as follows: the lower reservoir 2 takes underground water burst as a supplementary water source or stores redundant water to the lower reservoir through the upper reservoir 1 in rainy season by a water-pumping energy storage unit for standby, and meanwhile, the upper reservoir 1 reserves a solution space for storing water in the lower reservoir 2 after being pumped to the upper reservoir 1;
the second step is that: when the power supply of a nearby power grid is larger than the demand, and the electric power system generates excess electric quantity, the low-valley electric energy or the excess electric energy is input into the plant chamber 3, a reversible water-pumping energy storage unit in the plant chamber 3 is driven to be electrified, then water in the lower reservoir 2 is pumped into the upper reservoir 1, the excess low-valley electric energy is converted into gravitational potential energy of the water, and accumulated water energy storage of the upper reservoir 1 is completed;
the third step: when the power supply of a nearby power grid is short of demand and the power system is in a power utilization peak, the diversion tunnel 4 of the upper reservoir 1 is opened, water flows through the plant chamber 3 along the diversion tunnel 4 under the action of gravity and enters the lower reservoir 2 through the tail water tunnel 5. When the water flows through the plant chamber 3, the water in the upper reservoir 1 drives a reversible pumped storage unit in the plant chamber 3 to generate power by utilizing the gravitational potential energy, and the gravitational potential energy of the water is converted into electric energy to be sent back to the power grid;
the fourth step: and repeating the second step and the third step to realize pumped storage circulation.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an utilize collapse area and colliery underground space to unite system of carrying out pumped storage which characterized in that: comprises an upper reservoir (1), a lower reservoir (2) arranged below the upper reservoir (1), a factory building chamber (3) for pumping water and storing energy, a diversion tunnel (4), a tail water tunnel (5), a pressure regulating chamber (6), a trash rack (7) for filtering sundries and a ventilation and transportation system (8); the system comprises an upper reservoir (1), a lower reservoir (2), a workshop chamber (3), a pressure regulating chamber (6), a trash rack (7), a drainage tunnel (4) and a tail water tunnel (5), wherein the upper reservoir (1) is a reinforced coal mine ground subsidence area, the lower reservoir (2) is a withdrawn underground tunnel, a chamber and a gob area of a well coal mine, the workshop chamber (3) is arranged between the upper reservoir (1) and the lower reservoir (2) and is formed by expanding a station tunnel and a chamber at the bottom of the well coal mine well, a reversible water pumping and energy storage unit for pumping water and storing energy is arranged in the workshop chamber (3), the pressure regulating chamber (6) is arranged on the drainage tunnel (4) at the upstream of the workshop chamber (3) or the tail water tunnel (5) at the downstream of the workshop chamber (3), and the trash rack (7) is arranged at a connecting port of the drainage tunnel (4) and the upper reservoir (1) and a connecting port of the tail water tunnel (5) and the lower reservoir (2); diversion tunnel (4) one end communicates to upper reservoir (1), and the other end communicates with factory building chamber (3) one end, and tailwater tunnel (5) one end communicates with factory building chamber (3) other end, and the other end communicates with lower reservoir (2), and ventilation and transportation system (8) utilize the well work colliery pit shaft and the affiliated tunnel that withdraw from to change the enlargement and form, and one end communicates with factory building chamber (3), and the other end communicates with ground, and is higher than ground.
2. The system for performing pumped storage by utilizing the collapse zone and the underground space of the coal mine as claimed in claim 1, wherein: the dead water level of the upper reservoir (1) is higher than the highest water level of the lower reservoir (2).
3. The system for performing pumped storage by utilizing the collapse zone and the underground space of the coal mine as claimed in claim 1, wherein: and reinforcing and anti-seepage protection measures are taken at the bottom and the side of the upper reservoir (1).
4. The system for performing pumped storage by utilizing the collapse zone and the underground space of the coal mine as claimed in claim 1, wherein: and the lower reservoir (2) needs to take reinforcement and sealing protection measures.
5. The system for performing pumped storage by utilizing the collapse zone and the underground space of the coal mine as claimed in claim 1, wherein: the workshop chamber (3) is formed by reconstructing a shaft bottom yard roadway or chamber of a well-working coal mine.
6. The system for performing pumped storage by utilizing the collapse zone and the underground space of the coal mine as claimed in claim 1, wherein: the upper reservoir (1) takes a ground water system as a supplementary water source, and the lower reservoir (2) takes underground water burst as a supplementary water source.
7. The system for performing pumped storage by utilizing the collapse zone and the underground space of the coal mine as claimed in claim 1, wherein: the top of the pressure regulating chamber (6) is communicated with an exhaust pipe which is directly communicated with the ground and is higher than the ground.
8. The method for performing pumped storage by combining the coal mine ground subsidence area and the underground space is characterized in that the method is based on the system for performing pumped storage by combining the coal mine ground subsidence area and the underground space, which comprises the following steps:
the first step is as follows: the lower reservoir (2) takes the water gushed from the underground as a supplementary water source or stores redundant water to the upper reservoir (1) through a water pumping and energy storing unit for standby use in rainy season through the upper reservoir (1), and meanwhile, the upper reservoir (1) reserves a solution space for storing the water in the lower reservoir (2) after being pumped to the upper reservoir (1);
the second step is that: when the power supply of a nearby power grid is larger than the demand and the electric power system has excess electric quantity, inputting the low-valley electric energy or the excess electric energy into the plant chamber (3), driving a reversible water-pumping energy storage unit in the plant chamber (3) to be electrified, pumping the water in the lower reservoir (2) into the upper reservoir (1), converting the excess low-valley electric energy into the gravitational potential energy of the water, and finishing the accumulated water energy storage of the upper reservoir (1);
the third step: when the power supply of a nearby power grid is short of demand and the power system is in a power utilization peak, the diversion tunnel (4) of the upper reservoir (1) is opened, and water flows through the plant chamber (3) along the diversion tunnel (4) under the action of gravity and enters the lower reservoir (2) through the tailwater tunnel (5). When the water flows through the plant chamber (3), the water in the upper reservoir (1) drives a reversible pumped storage unit in the plant chamber (3) to generate electricity by utilizing gravitational potential energy, and the gravitational potential energy of the water is converted into electric energy to be sent back to a power grid;
the fourth step: and repeating the second step and the third step to realize pumped storage circulation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115306624A (en) * | 2022-08-08 | 2022-11-08 | 安徽理工大学 | Combined energy storage system based on closed coal mine roadway space |
| WO2024012562A1 (en) * | 2022-07-15 | 2024-01-18 | 广西川昆新能源科技有限公司 | Pumped storage power station in which underground cave depot matches ship lock |
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|---|---|---|---|---|
| CN108867584A (en) * | 2018-07-10 | 2018-11-23 | 中煤能源研究院有限责任公司 | Combine the system and method for carrying out water-storage with underground roadway using discarded opencut |
| CN108867585A (en) * | 2018-07-10 | 2018-11-23 | 中煤能源研究院有限责任公司 | Combine the system and method for carrying out water-storage with ground space using discarded opencut |
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| WO2024012562A1 (en) * | 2022-07-15 | 2024-01-18 | 广西川昆新能源科技有限公司 | Pumped storage power station in which underground cave depot matches ship lock |
| CN115306624A (en) * | 2022-08-08 | 2022-11-08 | 安徽理工大学 | Combined energy storage system based on closed coal mine roadway space |
| CN115306624B (en) * | 2022-08-08 | 2023-11-17 | 安徽理工大学 | Combined energy storage system based on closing coal mine roadway space |
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