Atmospheric precipitation storage underground reservoir system and construction method

Abstract

An atmospheric precipitation storage underground reservoir system is disclosed and used for mountainous areas or islands covered by complete bedrocks, a reservoir boundary is formed by drilling boundary shafts between planned boundaries of the complete bedrocks and performing directional fracturing between the boundary shafts, and rocks in the reservoir boundary form bedrock fractures through drilling and fracturing. A fracture reservoir is formed in the reservoir boundary, after atmospheric precipitation falls to the fractures in the surfaces of the rocks and permeates into the reservoir to be stored to form underground water, the underground water cannot be lost and wasted from the surfaces of the rocks, and the stored underground water is taken out through a water taking well; in addition, by building an earth surface water gathering and collecting channel, rainfall is guided to a fracturing well to enter the fractured reservoir, and the water storage efficiency is improved; and according to the underground reservoir system, the problem that underground water is difficult to store in related areas is solved, the water using problem of people in the areas is solved, normal production and life of people above the reservoir are not affected, extra building materials are not needed in the construction process, and the underground reservoir system is suitable for being comprehensively popularized in the related areas.

Description

technical field [0001] The invention relates to the technical field of underground water storage, in particular to an underground reservoir system for storing atmospheric precipitation and a construction method. Background technique [0002] In mountainous areas with complete bedrock exposed on the surface and lack of groundwater, especially islands formed by complete bedrock, it is difficult to store rainwater because of the integrity and compactness of the formation lithology, which prevents rainwater from infiltrating. [0003] For islands formed by complete bedrock, not only is the area small, but also the extreme lack of fresh water resources is one of the main constraints on the development of islands. At present, the fresh water sources of such islands are mainly transported by rainfall and ships, or by seawater desalination devices. It is obtained that the transportation of ships is limited by the limitation of transportation capacity and the influence of climate, th...

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Problems solved by technology

[0003] For islands formed by complete bedrock, not only is the area small, but also the extreme lack of fresh water resources is one of the main constraints on the development of islands. At present, the fresh water sources of such islands are mainly transported by rainfall and ships, or by seawater desalination devices. It is obtained that the transportation of ships is limited by the limitation of transportation capacity and the influence of climate, the seawater desalination device consumes a lot of energy, and the rainwater collection is often wasted in the sea because it cannot be stored.

Islands are located in the ocean, and generally have relatively abundant rainfall. Collecting rainwater and storing it is the best choice. Of course, we can build dams on islands to form reservoirs, but such terrain conditions are difficult to find on islands and cannot be commonly used. Moreover, it is difficult to find materials for dam construction on islands far away from the mainland, and the construction cost is also very high

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