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Photovoltaic-pumped storage-terrestrial heat combined development and utilization system for abandoned coal mine and construction method

A pumped storage and photovoltaic power station technology, applied in the field of photovoltaic-pumped storage-geothermal joint development and utilization system, to achieve the effect of low construction cost

Pending Publication Date: 2022-05-17
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD +1
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Problems solved by technology

[0008] At present, the domestic development and utilization of abandoned mine surface land resources, underground space resources and geothermal resources is just in its infancy, and there is a lack of joint development and comprehensive utilization of multi-energy complementary models based on abandoned mine solar energy, geothermal energy and underground space energy storage. and technical solutions

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  • Photovoltaic-pumped storage-terrestrial heat combined development and utilization system for abandoned coal mine and construction method

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[0132] Take the geological strata and coal mining conditions of an abandoned coal mine as an example to carry out reconstruction. The coal seam of this coal mine is gentle (the maximum slope is about 6°), the burial depth is large (the mining depth is 600-800m), and the faults are not developed. Therefore, the working faces of the mining area are arranged side by side and can be connected into one piece. Because the coal mine is located in the plain urban belt, the "Three Lowers" are serious, so the mining methods are backfill mining and full caving method, and the backfill is ultra-high water material. The coal seam mining area below the area is all caving method.

[0133]A large collapsed basin is formed on the surface of all caving coal mining areas. The coal mine has leveled and compacted the collapsed basin. Under the action of long-term rainfall, a large collapsed lake has been formed in the collapsed basin. There is a huge thick clay layer under the collapsed basin (th...

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Abstract

According to the photovoltaic-pumped storage-terrestrial heat combined development and utilization system for the abandoned coal mine and the construction method, a coal mine underground space reservoir communicates with heat exchange equipment through a water pumping and heat taking well, and cooled terrestrial heat water comes out of the heat exchange equipment and enters a ground subsidence area reservoir through a terrestrial heat water tail water conveying pipe; the ground subsidence area reservoir is communicated with the coal mine underground space reservoir through a recharge power generation channel, a water suction pump is arranged on the water suction heat extraction well, and a hydroelectric generating set is arranged on the recharge power generation channel; a circulating water pipeline is arranged between the heat source utilization end and the heat exchange equipment; a solar panel of the photovoltaic power station is erected above the reservoir in the ground subsidence area; the photovoltaic power station is connected with the water pump through a transmission line; the underground space of the coal mine is an abandoned coal mine goaf or / and a laneway project. Therefore, combined development and comprehensive utilization of multi-energy complementary modes such as solar energy, geothermal energy and underground space energy storage are realized.

Description

technical field [0001] The invention relates to the field of development and utilization of abandoned coal mines, in particular to a photovoltaic-pumped storage-geothermal joint development and utilization system and construction method of abandoned coal mines. This application belongs to the thermal power generation equipment under the sub-direction of 6.32 solar energy production equipment under the key direction of 6.3 solar energy industry in the 6 new energy industries of the strategic emerging industry catalogue and geothermal utilization under the key direction of 6.5 other new energy industries. Background technique [0002] Coal is the main energy source in my country. After a long period of high-intensity mining, a large number of coal mines have been closed due to resource exhaustion. According to incomplete statistics, from the end of the 1990s to the end of 2019, nearly 80,000 coal mines nationwide have been closed. After coal mines are closed, there are still ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24T10/20F24D18/00H02S10/10F03B13/06E21D11/10E21D11/38E21F17/16F24D101/40
CPCF24T10/20F24D3/18F03B13/06E21D11/105E21D11/38E21F17/16H02S10/10F24D2200/11F24D2200/14Y02E10/20Y02E60/16
Inventor 卢邦稳刘长武
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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